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WO2018028687A1 - Method and device for channel state feedback - Google Patents

Method and device for channel state feedback Download PDF

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Publication number
WO2018028687A1
WO2018028687A1 PCT/CN2017/097146 CN2017097146W WO2018028687A1 WO 2018028687 A1 WO2018028687 A1 WO 2018028687A1 CN 2017097146 W CN2017097146 W CN 2017097146W WO 2018028687 A1 WO2018028687 A1 WO 2018028687A1
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WO
WIPO (PCT)
Prior art keywords
csi
group
configuration information
csis
csi configuration
Prior art date
Application number
PCT/CN2017/097146
Other languages
French (fr)
Chinese (zh)
Inventor
梁津垚
王婷
李元杰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610879250.6A external-priority patent/CN107743042A/en
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17838817.9A priority Critical patent/EP3496288A4/en
Publication of WO2018028687A1 publication Critical patent/WO2018028687A1/en
Priority to US16/267,847 priority patent/US20190173549A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for channel state feedback.
  • MIMO Multiple Input Multiple Output
  • 4G fourth generation
  • 5G fifth generation
  • a plurality of transmit antennas of a conventional centralized MIMO system are concentrated on a base station (BS) side.
  • BS base station
  • multiple transmit antennas of distributed MIMO systems are distributed in different geographical locations, and each pair of transceiver links is more independent, with large capacity, low power consumption, better coverage, and low body.
  • Advantages such as electromagnetic damage are considered to be one of the alternatives for future wireless communication systems.
  • CoMP Coordinated Multipoint Transmission
  • the embodiment of the invention provides a channel state feedback method and device for reducing the overhead of channel state feedback and improving the effectiveness of channel state feedback.
  • an embodiment of the present invention provides a channel state feedback method, including:
  • the user equipment receives M group channel state information (CSI) configuration information from the network device, where M is an integer greater than or equal to 1; the M group CSI configuration information includes a CSI configuration corresponding to the serving cell of the user equipment. Information, or the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M group CSI configuration information;
  • M channel state information
  • the user equipment feeds back N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information according to the CSI configuration information,
  • the M-group CSI configuration information includes the CSI configuration information of the serving cell of the user equipment
  • the N is an integer greater than or equal to 1 and not greater than M
  • the N-group CSI includes at least CSI of the CSI configuration information of the serving cell
  • the N-group CSI does not include the CSI corresponding to the CSI configuration information of the serving cell, and the N is greater than or equal to 0 and an integer not greater than M.
  • each group of CSI configuration information includes at least one of a cell identifier, a CSI process identifier (ID), or an identifier of a set of non-zero power reference signal resources, where the cell is the user equipment.
  • the associated cell the associated cell includes a serving cell of the user equipment, or a cell that cooperates with the serving cell of the user equipment; the CSI process corresponds to an identifier of a set of non-zero power reference resources.
  • the method further includes: the user equipment feedback indication information, where the indication information is used to indicate N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment.
  • the method further includes: the user equipment receiving information from the network device indicating a type of each group of CSIs.
  • the information indicating the type of each group of CSI may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
  • the method further includes: receiving, by the user equipment, information about the number of CSIs included in each group of CSIs from the network device.
  • the information indicating the number of CSIs included in each group of CSIs may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
  • an embodiment of the present invention provides a channel state feedback method, including:
  • the network device sends M group channel state information (CSI) configuration information to the user equipment, where M is an integer greater than or equal to 1;
  • M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment.
  • the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M group CSI configuration information;
  • the network device receives N sets of CSIs in the M sets of CSIs corresponding to the M sets of CSI configuration information from the user equipment,
  • the N is an integer greater than or equal to 1 and not greater than M;
  • the N-group CSI does not include the CSI corresponding to the CSI configuration information of the serving cell, and the N is greater than or equal to 0 and an integer not greater than M.
  • it also includes:
  • the network device further sends, to the network device, information indicating a type of each group of CSIs.
  • the information used to indicate the type of each group of CSI may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
  • the method further includes: sending, by the network device, the CSI included in each group of CSIs to the user equipment Number of information.
  • the number of CSIs that are included in each group of CSIs may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
  • the type of each group of CSIs includes a rank indication (RI) and/or precoding matrix information (PMI), or
  • the types of CSI for each group include channel quality information (CQI), and, rank indication and/or precoding matrix information.
  • the indication information includes M groups of bits, each group of bits includes at least 1 bit, and each group of bits indicates whether a CSI corresponding to a group of CSI configuration information in the M group of CSI configuration information is used by the user.
  • Device feedback indicates whether a CSI corresponding to a group of CSI configuration information in the M group of CSI configuration information is used by the user.
  • the indication information includes M-1 group bits, each group of bits includes at least 1 bit, and each The group bit indicates whether the CSI corresponding to a group of CSI configuration information in the M-1 group CSI configuration information except the CSI configuration information of the serving cell in the M group CSI configuration information is fed back by the user equipment.
  • the N sets of CSIs are fed back in a predetermined order, where the predetermined order is related to the order of the M sets of bits; or the N sets of CSIs are carried in the M sets of resources corresponding to the M sets of CSIs.
  • the N sets of resources in the M group are fed back, wherein the order of the M sets of CSIs of the M sets of CSIs is related to the order of the M sets of bits, and the resources of the M sets of resources for carrying the N sets of CSI are not used.
  • Carry CSI Carry CSI.
  • the N sets of CSIs are fed back in a predetermined order, where the predetermined order is related to the order of the M-1 group bits; or the N sets of CSIs are carried in the C1 group corresponding to the M-1 group.
  • the N-group resources in the M-1 group resources are fed back, wherein the order of the M-1 group resources of the M-1 group CSI is related to the order of the M-1 group bits, and the M-1 group resources are Resources for carrying the N sets of CSIs are not used to carry CSI.
  • the value of each group of bits indicates the number of CSIs in a group of CSIs corresponding to the corresponding CSI configuration information.
  • the number of CSIs is determined according to the number of CSIs that are required to be fed back by each group of CSI configuration information, and the number of CSIs required to be fed back by each group of CSI configuration information is predefined, or Signaling or physical layer signaling configuration.
  • the indication information includes identifier information of each group of CSI configuration information corresponding to each group of CSIs in the N groups of CSIs.
  • the feedback order of the N sets of CSIs is related to the order of the identifier information of the corresponding N sets of CSI configuration information.
  • the user equipment according to the CSI configuration information, the N sets of CSIs in the M group of CSIs corresponding to the M group of CSI configuration information, including:
  • the user equipment obtains the corresponding M group CSI according to the M group CSI configuration information, according to the determined principle. And N pairs of CSIs in the M group CSI are determined and fed back.
  • the determined principle includes a combination of one or more of the following:
  • Method 1 Determine and feed back N sets of CSIs in the M sets of CSI according to comparison of each group of CSIs in the M group CSI with corresponding threshold values;
  • the type of the CSI is the same or different, and the type of the CSI indicates that each group of CSIs includes an RI, a full band or a subband PMI, or a combination of one or more of the CQIs.
  • the information indicating the type of each group of CSI is carried in the CSI configuration information.
  • the network device is a network device to which the serving cell of the user equipment belongs.
  • the M group CSI configuration information is carried in a CSI process, or is carried in the M CSI processes, and each CSI process carries a set of CSI configuration information, or is carried in the T CSI process, T It is greater than 1 and less than or equal to M, and one of the T CSI processes includes at least 2 sets of CSI configuration information.
  • an embodiment of the present invention further provides an apparatus for wireless communication, where the apparatus may be used for channel state feedback, which includes functional modules required for implementing the method provided by the above first aspect.
  • the apparatus may be used for channel state feedback, which includes functional modules required for implementing the method provided by the above first aspect.
  • the division and description of specific functional modules are not described here.
  • an embodiment of the present invention provides an apparatus for wireless communication, where the apparatus may be used for channel state feedback, which includes functional modules required for implementing the method provided by the above second aspect.
  • the apparatus may be used for channel state feedback, which includes functional modules required for implementing the method provided by the above second aspect.
  • the division and description of specific functional modules are not described here.
  • a fifth aspect of the present invention provides a network device, including: a transceiver, a processor, and a memory; the network device is a specific structure that carries the fourth aspect functional module.
  • the memory is configured to store computer program instructions
  • the processor coupled to the memory, for reading computer program instructions stored by the memory and performing the method as provided in the second aspect above.
  • a terminal (user equipment) provided by the embodiment of the present invention includes: a transceiver, a processor, and a memory; the user equipment is a specific structure that carries the functional module of the third aspect.
  • the memory is configured to store computer program instructions
  • the processor is coupled to the memory for reading computer program instructions stored by the memory and performing the method as provided in the first aspect above.
  • the embodiment of the present invention further provides a program storage medium, where the program stored in the program storage medium is executed, the method provided by any one of the foregoing first aspect or the second aspect may be implemented. .
  • An embodiment of the present invention further provides an apparatus for configuring a resource, where the apparatus configured by the resource may be used to perform the method of the first aspect or the second aspect.
  • the embodiment of the present invention provides a computer readable storage medium, including a computer program, when executed on a computer, causes the method of any one of the first aspect or the second aspect to be implemented.
  • the network device provided by the present application has a function of implementing the behavior of the network device in the above method aspect, and includes means for performing the steps or functions described in the above method aspect.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the network device described above includes one or more processors and communication units.
  • the one or more processors are configured to support the network device to perform corresponding functions in the above methods. For example, generate configuration information.
  • the transceiver unit is configured to support the network device to communicate with other devices to implement receiving and/or transmitting functions. For example, transmitting configuration information generated by the processor, and/or receiving CSI or the like.
  • the network device may further include one or more memories, and the memory is configured to be coupled to the processor, which saves program instructions and data necessary for the network device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the network device may be a base station or a TRP, etc.
  • the communication unit may be a transceiver, or a transceiver circuit.
  • the network device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above network device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal for storing a computer program for calling and running the computer program from the memory, such that the network device performs the second aspect, or any one of the second aspects The method of implementing the network device in the implementation mode.
  • the present application also provides an apparatus having the functionality to implement the behavior of a user device in the aspects of the method described above, including means for performing the steps or functions described in connection with the method aspects above.
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the above apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus to perform the respective functions of the methods described above. For example, parsing configuration information.
  • the transceiver unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, receiving configuration information, and/or, transmitting CSI, and the like.
  • the apparatus may further include one or more memories for coupling with the processor, which store program instructions and data necessary for the device.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit.
  • the device can also be a communication chip.
  • the communication unit may be an input/output circuit or interface of a communication chip.
  • the above apparatus includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver to send and receive signals
  • the memory is configured to store a computer program
  • the processor is configured to call and run the memory from the memory
  • a computer program that causes the apparatus to perform the method of the first aspect, or the user equipment in any of the possible implementations of the first aspect.
  • the user equipment may not feed back all or part of the CSI corresponding to all the M sets of CSI configuration information received, so that the overhead of CSI feedback may be reduced.
  • CS/CB refers to the scheduling result of the local area and the neighboring area according to the measured neighboring area interference during the scheduling of the local cell, so as to achieve the purpose of interference avoidance and weakening.
  • Neighbor In coordinated multipoint transmission, multiple cells cooperatively share CSI measurement information or scheduling information, and multiple cells that can be coordinated are referred to as being in the same cooperation set. When a cell performs measurement, other cells in the collaboration set are called neighbor cells.
  • Neighbor interference When a neighboring base station schedules a UE in its range, the beam may cause a large interference to a UE in the area. The interference is caused by the neighboring area and needs to be avoided or weakened in the scheduling coordination of the area and the neighboring area. .
  • Serving cell A cell that has an RRC link with the UE or a cell that transmits data for the UE.
  • Base stations in the same collaboration set can share their own CSI measurement information or scheduling information according to their needs.
  • a typical cooperative behavior is: the serving cell base station acquires measurement information and scheduling information of the neighboring base station.
  • the serving cell adjusts the MCS of the UE or In turn, another UE or neighboring zone is scheduled for beam switching.
  • the CSI configuration information includes:
  • the measurement resources are allocated to the UE by the RRC signaling of the base station.
  • the UE measures the corresponding CSI information on the allocated resources.
  • Measurement resources and corresponding measurement content include:
  • Non-zero power reference signal resource (NZP CSI-RS RE): used to measure channel state information.
  • the channel status information includes: RI, PMI, CQI.
  • Interference measurement resource refers to the quietness of the serving cell, and the neighboring area transmits data, reference signals, etc., and the information measured by the neighboring area is detected on the resource. (optional configuration)
  • Configuration information of the serving cell refers to configuration information used to measure channel state information of the serving cell or a signal on the NZP CSI-RS resource in the configuration information is sent by the serving cell
  • FIG. 1 is a schematic flowchart diagram of a method for providing CSI feedback according to an embodiment of the present application
  • 3a and 3b are schematic structural diagrams of an apparatus for CSI feedback provided by an embodiment of the present application.
  • 4a and 4b are schematic structural diagrams of an apparatus for CSI obtaining according to an embodiment of the present application.
  • Downlink CoMP technologies mainly include Joint Transmission (JT), Coordinated Scheduling and Beamforming (CS/CB), and Dynamic Point Selection/Dynamic Point Blanking (DPS/DPB).
  • JT is divided into coherent JT and non-coherent JT.
  • the serving base station needs to know the downlink channel conditions of each station to the target user (also referred to as channel state.
  • channel state In LTE, the English abbreviation is CSI.
  • the channel state information is abbreviated as CSI. But not limited to this).
  • a reference signal that is, a CSI reference signal (CSI-RS)
  • CSI-RS CSI reference signal
  • the CSI-RS corresponds to 16 different antenna ports, and the port number is 15 to 30.
  • the UE estimates the channel by measuring the specific CSI-RS, and obtains the CSI information and reports it to the serving base station through a physical uplink control channel (PUCCH).
  • the reported CSI information may include a channel quality indicator (CQI), a rank indicator (RI), and one or more combinations of precoding matrix indicator (PMI) information. .
  • CQI channel quality indicator
  • RI rank indicator
  • PMI precoding matrix indicator
  • Some reporting methods also require the user to report a sub-band indicator.
  • RRC Radio Resource Control
  • CS/CB is one of the CoMP technologies. It refers to whether the neighboring cell has interference to the neighboring cell in the scheduling of the cell, and according to the interference situation of the neighboring cell, the cell appropriately adjusts the scheduling result of the cell or adjusts the neighboring cell appropriately.
  • the scheduling result of the cell is used to avoid or reduce the interference of the neighboring cell, thereby more accurately measuring the channel of the cell and more effectively scheduling.
  • the CSI measurement configuration information used by the CS/CB technology is: the serving base station can configure multiple CSI processes (process) for the target user equipment (UE, user equipment) through RRC (radio resource control) signaling.
  • the CSI process the non-zero power (NZP) CSI-RS configuration of the UE is used to measure channel information, and the CSI-IMR (Interference Measurement Resource) is also indicated for measuring interference.
  • the content of the report corresponding to each CSI process may be specified in the configuration.
  • the serving base station may configure a target user equipment (UE, user equipment) through RRC (radio resource control) signaling.
  • the CSI process indicates that multiple sets of UE non-zero power (NZP) CSI-RS configurations are used in each CSI process to measure channel information.
  • the existing RRC signaling configuration is as follows: a cell information of a CSI process, including a process identifier. (csi-ProcessId), NZP identifier (csi-RS-ConfigNZPId) (refer to 3GPP TS 36.331-d00):
  • the specific NZP CSI-RS cells can be described as follows:
  • the content reported by the UE may be determined by configuring a feedback manner (also referred to as CSI feedback configuration information in this application).
  • the content reported by the UE includes a type of CSI fed back by the UE, that is, a combination of one or more of RI, PMI, and CQI included in the CSI.
  • CSI measurement configuration information and CSI feedback configuration information are collectively referred to as CSI configuration information.
  • the CSI configuration information may include CSI measurement configuration information and/or CSI feedback configuration information.
  • CQI and PMI Feedback Types for PUSCH CSI reporting Modes (corresponding to CQI and PMI feedback types of PUSCH (physical uplink shared channel) CSI reporting mode)
  • the base station to which the serving cell of the UE belongs configures multiple CSI processes for the UE, or multiple NZP CSI-RS resources in one CSI process to measure channel information.
  • the UE can measure channel information of other cells to the UE.
  • the UE if the UE does not need to transmit information between other cells and the UE, the UE only needs to know the RI/PMI of other cells to the UE ("/" stands for "and/or”), so the CQI information does not need feedback.
  • no CSI process may not feed back CQI information
  • no NZP CSI-RS resource may not feed back CQI.
  • PUCCH In the feedback configuration of the PUSCH and the PUSCH, there is no configuration that does not feed back CQI information. Therefore, in the CS/CB technology, signaling may be added, such as high-level signaling (such as RRC signaling), so that only RI and PMI are fed back to a CSI process or NZP CSI-RS resources, and CQI is not fed back.
  • the size of the collaboration set depends on the network density, service requirements, etc., so in some cases, the number of cells included in the collaboration set may be large.
  • each cell may have several interference beams, and multiple cells have more interference beams, which results in a large number of UE measurement results.
  • part of the interference is strong interference to the UE
  • part of the interference is weak interference
  • strong interference needs to be fed back to the base station to which the cell belongs, and weak interference does not require feedback.
  • the content reported by the UE is reported according to the configuration of the base station. Generally, all measurement information needs to be fed back.
  • the base station cannot obtain all neighboring interference information at the same time, and the base station obtains the time difference of the information fed back by the UE (especially when multiple CSI processes are configured), which causes the scheduler of the base station to wait for all feedback data to arrive.
  • the scheduling algorithm can be executed.
  • the CQI must be included in the CSI feedback content of the neighboring cell, and the UE does not have a filtering mechanism for whether the CSI of the neighboring cell is reported.
  • the inventor of the present application has proposed a CSI feedback method, which can reduce the waste of signaling resources and improve the effectiveness of collaboration, especially in the CS/CB scenario, which can reduce overhead and implement CSI more efficiently. Measurement and feedback.
  • the embodiments of the present invention are applicable to scenarios of a homogeneous network or a heterogeneous network.
  • the embodiment of the present invention is not limited.
  • it may be various types of transmission points, such as a macro base station and a macro base station, a micro base station and a micro base station, or a macro base station and a micro base station. Cooperative transmission between base stations.
  • the device involved includes a first device and a second device.
  • the second device may configure the first device to perform CSI measurement and feedback for multiple coordinated transmission points, and the first device may perform CSI measurement and feedback for multiple coordinated transmission points according to the configuration information sent by the second device.
  • the first device may be a terminal
  • the second device may be a network device, such as a base station or other type of transmission point device, and is not limited to the above two devices.
  • the second device may also be configured to perform operations on other terminals. Terminal.
  • the base station may be an evolved base station (Evolved Node B, referred to as an eNB or an e-NodeB), a macro base station, a micro base station (also referred to as a "small base station"), a pico base station, and an access in an LTE system or an evolved system thereof.
  • An access point (AP) or a transmission point (TP) may also be a base station in a future network, such as a base station in a 5G network.
  • the terminal may also be referred to as a user equipment (User Equipment, UE for short), or may be called a terminal, a mobile station (Mobile Station, MS for short), a mobile terminal (Mobile Terminal), etc.
  • the terminal may communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, or the like.
  • the terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • the terminal in the embodiment of the present invention may also be a D2D (Device to Device) terminal or an M2M (Machine to Machine) terminal.
  • the embodiments of the present application are applicable to a coordinated multi-point transmission scenario, such as a CS/CB scenario.
  • the user equipment receives M group CSI configuration information from the network device, where M is an integer greater than or equal to 1;
  • the M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment, where M is an integer greater than or equal to 2;
  • the network device sends the M group CSI configuration information to the user equipment.
  • the CSI configuration information includes a cell identifier, a CSI process ID, an identifier of a set of non-zero-power CSI reference signal resources, or at least one of a set of CSI-IM (interference measurement) resource identifiers.
  • the cell is a cell associated with the user equipment, and the associated cell includes a serving cell of the user equipment, or a cell that cooperates with a serving cell of the user equipment; the CSI process corresponds to a set of non-zero power
  • the identifier of the reference signal resource, or the CSI process corresponds to an identifier of a set of CSI-IM resources.
  • the foregoing network device is a network device to which the serving cell of the user equipment belongs.
  • the M group CSI configuration information may correspond to M cells (which may also be represented as beams, and may also be referred to as beams), and the M cells may include the serving cell of the UE and participate in the serving cell CS/ The other M-1 cells of the CB (referred to as neighbors in this application). It can be understood that the M cells may also include M cells (also referred to as neighbor cells) participating in the serving cell CS/CB of the UE, or the M cells may also include performing various types of CoMP transmission.
  • a cell may include a serving cell of the UE, one or more cells (also referred to as neighboring cells) participating in the serving cell CS/CB of the UE, and participate in a serving cell JT with the UE.
  • the network device to which the cell participating in the CoMP transmission belongs may also be referred to as a transmission point (TP).
  • the transmission point may be a base station or a radio unit of a base station, which is not limited herein.
  • the cell corresponding to the M group CSI configuration information includes only the service of the UE.
  • the cell corresponding to the M group CSI configuration information includes other types except the serving cell of the UE, or the cell (neighborhood) participating in the serving cell CS/CB.
  • the community of CoMP For each type of cell, the CSI feedback requirements may be the same or different (for example, for a JT cell, the CQI must be reported, for a CS/CB cell, the CQI may not be reported), corresponding to the CSI configuration information of the cells.
  • the requirements for CSI feedback can be configured through protocol pre-defined or network devices.
  • interference For a cell participating in a CS/CB, its impact on the channel quality of the serving cell or the cell participating in the JT (typically including the cell with the best channel quality) may be referred to as interference.
  • the user equipment feeds back N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information according to the CSI configuration information, where the N is an integer greater than or equal to 0 and not greater than M;
  • N is greater than or equal to 1, and the N sets of CSIs include at least CSI corresponding to CSI configuration information of the serving cell; or, the N sets of CSIs include at least one set of CSIs with the best channel quality.
  • the network device receives N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information from the user equipment.
  • the user equipment feedback indication information where the indication information is used to indicate N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment.
  • the network device receives indication information from the user equipment.
  • the indication information may be in the form of a bitmap, or may be identifier information of CSI configuration information corresponding to each group of CSIs.
  • the indication information is in the form of a bitmap
  • the indication information may include M groups of bits, each group of bits including at least 1 bit, and each group of bits indicates whether a CSI corresponding to a group of CSI configuration information in the M group of CSI configuration information is used by the user Device feedback. For example, if the value of M is 5, the indication information includes 5 groups of bits, and each group of bits corresponds to a CSI corresponding to a group of CSI configuration information. When the CSI corresponding to a certain group of CSI configuration information needs feedback, the CSI corresponds to The bit can be set to a preset value. For example, when the CSI corresponding to a certain group of CSI configuration information does not require feedback, the bit corresponding to the CSI can be set to another preset value, such as 0.
  • the feedback order of the N sets of CSIs may be related to the order of the M sets of CSI configuration information corresponding to the corresponding M sets of bits, for example, consistent.
  • the network device can learn, according to the feedback sequence, which N sets of CSI configuration information corresponding to the fed N sets of CSIs are.
  • the M group bits may be continuously transmitted, or each group of the M groups of bits may be transmitted together with a group of CSIs indicated by the group.
  • the UE may allocate resources only to the N sets of CSIs, where the N sets of CSIs are sequentially carried in the resources allocated by the UE; or the UE may give the M sets of CSIs corresponding to the M sets of CSI configuration information.
  • the resources are reserved, and the N sets of CSIs actually fed back are sequentially carried in the corresponding N groups of resources in the M group CSI reserved resources.
  • the indication information may include M-1 group bits.
  • the CSI corresponding to the CSI configuration information of the serving cell of the UE may be required to be fed back by default, and the feedback of the group of CSI may be determined by the network device to be corresponding to the CSI configuration information of the serving cell by other means, the group of CSI may not need to be in the CSI configuration information.
  • An indication is made in the feedback of the UE.
  • the manner in which the specific M-1 group bits are indicated may be referred to the manner in which the above M group bits are indicated.
  • the M-1 group bits may be continuously transmitted, or each group of the M-1 group bits may be transmitted together with a group of CSIs indicated by the group.
  • the identifier information of the CSI configuration information may be the cell identifier information, the CSI process identifier information, or the identifier information of the NZP CSI-RS resource, or Identification information of CSI-IM resources.
  • the identifier information of the foregoing CSI configuration information may also be an index of each group of CSI configuration information, that is, a number of each group of CSI configuration information in the configured M group CSI configuration information.
  • the number of bits occupied by the index may be log 2 M, and the index of each group of CSI configuration information may be M positive integers of 0 to M-1.
  • the order can be foreseen by both the network device and the UE. It can be understood that the number of bits occupied by the index can be notified to the UE through physical layer signaling or higher layer signaling. Or the number of index bits is predefined by the protocol.
  • the identifier information of the CSI configuration information corresponding to each group of CSIs may be transmitted together with the indicated CSI, and the CSI may include an RI, a PMI, or a CQI. This can make CSI feedback more flexible.
  • the identifier information may be coded and modulated together with the RI, PMI or CQI in the CSI indicated.
  • the identification information may be separately coded and modulated independently of the RI, PMI or CQI in the CSI indicated.
  • how the identification information of the CSI configuration information corresponding to each group of CSIs is sent together with the CSI may be predefined by the system.
  • the identification information of the CSI configuration information corresponding to each group of CSIs may be transmitted together with the RI, and the transmission order of the two may be predefined by the system, for example, the identification information is before the RI, or the identification information is after the RI; or
  • the identification information of the CSI configuration information corresponding to each group of CSIs may be sent together with the sub-band or the full-band PMI and/or CQI.
  • the transmission order of the two may be predefined by the system, such as the identification information placed before the PMI and / or CQI or The identification information is placed after the PMI and/or CQI, or the identification information is placed at the specified coding location; or
  • the identification information of the CSI configuration information corresponding to each group of CSIs may be sent together with the CRI (CSI-RS resource ID).
  • the transmission order of the two may be predefined by the system, such as the identification information is placed before the CRI or the identification information is placed after the CRI, or the identification information is placed at the specified coding location.
  • the type reported for the CSI measurement is class B (type B, which refers to beamformed CSI-RS, beam-formed CSI-RS) and K CSI-RS resources (K>1) are configured for CSI measurement.
  • the UE needs to include the CRI in the feedback CSI.
  • the type of CSI measurement report of the UE may be notified by the eMIMO-Type cell in the high layer signaling.
  • the indication information is sent in a PUSCH, or the indication information is sent in a PUCCH.
  • the reporting type of the PUCCH such as the type 11-16, may be used to indicate the format in which the indication information is sent together with the CSI.
  • Type 11 indicates that CRI and indication information are supported for transmission together
  • Type 12 indicates that the support RI and the indication information are transmitted together
  • Type 13 indicates support for CRI, and RI and indication information are transmitted together;
  • Type 14 indicates support for wideband CQI and indication information to be transmitted together
  • Type 15 indicates support for wideband CQI, and PMI and indication information are transmitted together;
  • Type 16 indicates that the sub-band CQI is supported, and the second PMI is transmitted together with the indication information.
  • the manner in which the UE determines the N sets of CSIs that are required to be fed back may include a combination of one or more of the following manners:
  • Method 1 Obtain a corresponding M group CSI according to the M group CSI configuration information, and determine and feed back N sets of CSI in the M group CSI according to comparison between each group CSI in the M group CSI and a corresponding threshold.
  • the CQI included in the CSI can be compared with the corresponding first threshold.
  • the corresponding CSI feedback is performed.
  • channel quality preferably means that the CQI value is the largest.
  • the feedback principle may be:
  • CSI of the CSI configuration information of the serving cell or M group CSI corresponding to the M group CSI configuration information A set of CSI indicating the best channel quality is used as the reference CSI, and the CSI configuration information corresponding to the reference CSI is referred to as reference CSI configuration information.
  • the CQIs in the CSIs corresponding to the CSI configuration information of the other group are compared with the CQIs in the reference CSI, and when the difference between the two is less than or equal to the second threshold, the CSI corresponding to the CSI configuration information is performed.
  • Feedback when the difference between the two is less than or equal to the second threshold, it may be stated that the channel quality corresponding to the non-reference CSI configuration information is equivalent to the channel quality corresponding to the reference CSI configuration information, if the non-reference CSI configuration information corresponds to The cell of the CS/CB has a large interference to the channel corresponding to the reference CSI configuration information.
  • the cell can be preferentially scheduled to participate in the JT, if not the reference.
  • the CSI configuration information corresponds to the cell of the DPS, and the cell may be preferentially scheduled to transmit data by the UE.
  • the UE When the UE superimposes the other group CSI configuration information on the reference CSI configuration information one by one (that is, the two sets of CSI configuration information are used for the UE to measure the channel at the same time), the channel information is measured one by one to obtain the CQI in the corresponding CSI, and The plurality of CQIs obtained by the measurements are compared with the CQIs in the reference CSI. When the difference between the two is greater than or equal to the third threshold, the CSI corresponding to the corresponding CSI configuration information is fed back.
  • the channel corresponding to the non-reference CSI configuration information has a greater impact on the channel corresponding to the reference CSI configuration information, and if the non-reference CSI configuration information corresponds to the CS/ In the cell of the CB, the cell has a large interference to the channel corresponding to the reference CSI configuration information. If the non-reference CSI configuration information corresponds to the JT cell, the cell may be preferentially scheduled to participate in the JT if the non-reference CSI configuration The information corresponds to the cell of the DPS, and the cell can be preferentially scheduled to transmit data by the UE.
  • first threshold value, second threshold value and third threshold value in the above manner 1 and/or mode 2 may be predetermined by the protocol (ie It can be configured through network devices, such as physical layer signaling or higher layer signaling. This configuration may be performed by using the CSI configuration information in S101, or may be performed in other manners, and is not limited herein.
  • the power value threshold corresponding to the interference beam may be measured at the same time, and the power value threshold is reported.
  • the power threshold is when the power value of the beam is greater than the power threshold, and the beam needs to be considered in various coordinated scenarios, such as CS/CB, JT, or DSP.
  • the method for determining the threshold of the power value may have the following three schemes:
  • the corresponding M group CSI is obtained according to the M group CSI configuration information, and the M group is determined and fed back according to the comparison between each group CSI in the M group CSI and the corresponding first threshold value. N sets of CSI in CSI.
  • the threshold if the CQI value measured for the group of CSI configuration information is CQI1, there is a power value threshold PA, so that when the power corresponding to the CSI configuration information is P1>PA, the CQI1 under the power P1 If the power corresponding to the CSI configuration information is P2 ⁇ PA (which may be less than or equal to), the CQI1 under the power P2 is smaller than the first threshold.
  • the interference of the beam of the neighboring cell to the UE is larger, smaller than (or equal to) the interference of the beam of the neighboring cell to the UE when the power value threshold PA is acceptable.
  • the cell may be preferentially scheduled to participate in the JT, and the power configuration is If the CSI configuration information is greater than the power of the DPS (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PA, the cell may be preferentially scheduled as the UE.
  • the data is transmitted and its power is configured to be greater than the power value threshold PA.
  • the expression of the power value threshold PA may be a specific value or a ratio.
  • the representation of the power P1 or P2 corresponding to the CSI configuration information is the same as the representation of the power value threshold.
  • the above power value threshold PA can satisfy:
  • H is a channel matrix measured by the UE based on the set of CSI configuration information, where W is a precoding matrix selected by the UE based on the set of CSI configuration information, where I is an interference value, N is a noise value, and P1 and P2 are the CSI configuration information of the group.
  • 2 is the square of the modulo.
  • 2 is a value calculated after considering the data of the network device configuration and the power of the pilot.
  • Solution 2 A feedback principle in the foregoing mode 2, that is, the CSI of the CSI configuration information of the serving cell or the CSI of the M group CSI corresponding to the M group CSI configuration information indicating the best channel quality is used as a reference.
  • the CSI configuration information corresponding to the reference CSI is referred to as reference CSI configuration information
  • the CQI in the CSI corresponding to the other group of CSI configuration information (also referred to as non-reference CSI configuration information) is compared with the CQI in the reference CSI one by one, when two When the difference between the two is less than or equal to the second threshold, the CSI corresponding to the CSI configuration information is fed back;
  • the measured CQI value is CQI1
  • a power value threshold PB such that when the power P1>PB corresponding to the non-reference CSI configuration information, the CQI1 under the power P1 and the reference
  • the difference between the two is less than or equal to the second threshold; when the power corresponding to the non-reference CSI configuration information is P2 ⁇ PB (which may be less than or equal to),
  • the power corresponding to the non-reference CSI configuration information is P2 ⁇ PB (which may be less than or equal to)
  • the difference between the two is greater than the second threshold.
  • the interference of the beam of the neighboring cell to the UE is larger.
  • the power value threshold PB is less than (or equal to) the interference of the beam of the neighboring cell to the UE is acceptable.
  • the cell may be prioritized. It is scheduled to transmit data to the UE, and its power is configured to be greater than the power value threshold PB.
  • the expression of the power value threshold PB may be a specific value or a ratio.
  • the representation of the power P1 or P2 corresponding to the non-reference CSI configuration information is the same as the representation of the power value threshold.
  • the above power value threshold PB can satisfy:
  • the reference CQI is a value of a CQI included in the CSI corresponding to the reference CSI configuration information
  • H is a channel matrix measured by the UE based on the set of CSI configuration information
  • W is a precoding matrix selected by the UE based on the set of CSI configuration information
  • W' is a precoding matrix selected by the UE for the reference CSI configuration information
  • I' is the interference value measured for the reference CSI configuration information
  • N' is the noise value measured for the reference CSI configuration information.
  • 2 is a value calculated after considering the data of the network device configuration and the power of the pilot.
  • 2 in the above formula may be replaced by P x
  • Scenario 3 Another feedback principle in the foregoing mode 2, that is, the UE superimposes other group CSI configuration information on the reference CSI configuration information one by one (that is, two sets of CSI configuration information are simultaneously used for UE to measure channel).
  • the channel information is measured one by one to obtain the CQI in the corresponding CSI, and the plurality of CQIs obtained by the measurements are compared with the CQI in the reference CSI, when the difference between the two is greater than or equal to the third threshold, The CSI corresponding to the corresponding CSI configuration information is fed back.
  • the CQI value in the corresponding CSI is obtained for the channel information measurement to be CQI1.
  • a power value threshold PC such that when the power P1>PC corresponding to the non-reference CSI configuration information is compared, the difference between the CQI1 under the power P1 and the CQI in the reference CSI is greater than the third gate.
  • the power P2 ⁇ PC (which may be less than or equal to) corresponding to the non-reference CSI configuration information
  • the difference between the CQI1 under the power P2 and the CQI in the reference CSI is less than or Equal to the third threshold.
  • the non-reference CSI configuration information of the group corresponds to the cell of the CS/CB (the beam of the neighboring cell), indicating that the power of the beam of the neighboring cell is greater than the power threshold PC, the interference of the beam of the neighboring cell to the UE is larger.
  • the power value threshold PC the interference of the beam of the neighboring cell to the UE is acceptable.
  • the cell may be preferentially scheduled to participate in the JT, and its power Configured to be greater than the power threshold PC.
  • the group of non-reference CSI configuration information corresponds to the cell of the DPS (the beam of the neighboring cell)
  • the power of the beam of the neighboring cell is greater than the power threshold PC
  • the cell can take precedence. It is scheduled to transmit data to the UE, and its power is configured to be greater than the power value threshold PC.
  • the power value threshold PC can be expressed in a specific value or a ratio.
  • the representation of the power P1 or P2 corresponding to the non-reference CSI configuration information is the same as the representation of the power value threshold.
  • the above power value threshold PC satisfies:
  • the reference CQI is the value of the CQI included in the CSI corresponding to the reference CSI configuration information
  • P1 and P2 are the power values corresponding to the CSI configuration information
  • the threshold 3 is the third threshold
  • 2 is the modulo
  • H 0 is a matrix of channels measured by the UE based on the reference CSI configuration information
  • W 0 is a precoding matrix selected by the UE based on the reference CSI configuration information
  • H 1 is the UE that is reported based on the to-be-measured a channel for measuring CSI configuration information
  • W 1 is a measurement of a precoding matrix selected by the UE based on the set of CSI configuration information to be measured
  • I 0 is interference of the group of CSI configuration information to be measured and reported.
  • N is noise.
  • 2 are values calculated after considering the data of the network device configuration and the power of the pilot, as another optional example,
  • the UE when it reports the above power threshold, it can report with the CRI, RI, PMI, or CQI.
  • the manner of reporting together may refer to the description in the manner in which the foregoing indication information is reported together with CRI, RI, PMI or CQI, that is, the power value threshold may be sent together with one or more of CRI, RI, PMI or CQI, specific
  • the code modulation may be coded together, or the code modulation may be performed separately.
  • the power value may be thresholded in the order, or the power value threshold may be followed.
  • the specific reporting method can be pre-defined by the system or configured by the reporting type of the PUCCH.
  • the reporting of the power value threshold may be performed by using a relative value or an absolute value.
  • the relative value of the power threshold (such as 1, 1/2, 1/3, 1/4) is divided into two levels, and one bit is required to be reported, and four levels are required. 2 bits are reported. Examples are as follows:
  • the absolute value of the power value threshold (such as an integer from -8 to 15) is quantized, and the quantization interval can be predefined by the system to be 1 or 2 or greater.
  • the quantization interval is different, and the power value threshold accounts for a different number of bits. For example, if the absolute value is an integer from -8 to 15, the power value threshold needs to occupy 5 bits when the quantization interval is 1, and the power value threshold needs to occupy 4 bits when the quantization interval is 2. If the quantization interval is 4, the power value threshold needs to be occupied. 3 bits and so on.
  • whether the UE reports the power information may be predefined by the system, or configured by the transmission point, for example, by using CSI configuration information, or configured by other signaling.
  • the coordinated transmission point obtains the information (such as the CSI) of the cell (the neighboring area beam) to be considered in the coordinated scenario and the corresponding power value threshold, and can perform the cooperative scheduling transmission flexibly.
  • the power smaller than the reported power value threshold may be used (or the cooperative TP may determine the transmission power value according to the fixed algorithm according to the reported power value threshold, for example,
  • System performance can be improved compared to directly circumventing the beam.
  • a group of CSIs fed back by the UE may include multiple CSIs.
  • the UE may perform CSI measurement for all codewords to obtain one or more CSIs.
  • Each CSI can be for one codeword and different CSIs for different codewords.
  • the number of CSIs included in a group of CSIs that are fed back by the UE may be determined by a protocol, or may be configured by using a network device, and determining which CSIs are used for feedback from all the CSIs obtained by the measurement, and the specific principle may be a protocol reservation. It can also be configured through a network device.
  • the specific principle can be: only The feedback indicates that the channel quality is good (also called strong interference), and the ranking is the CSI of the first few bits (for example, the value of the CQI is relatively large), and the specific number is determined by the number of CSIs to be fed back.
  • the number of CSIs corresponding to the feedback required for different sets of CSI configuration information may be the same or different.
  • the configuration parameters of the number of CSIs required for configuring different sets of CSI configuration information may be common.
  • the power threshold may be correspondingly fed back to multiple power value thresholds, or may only be fed back to a power threshold corresponding to a portion of the CSI, such as only feeding back a power threshold corresponding to the first CSI. . This can be predefined by the system as needed.
  • each group of bits in the above bitmap may also be used to indicate that each group of CSIs that are specifically fed back is included.
  • the number of CSIs, and the number of bits per group of bits can be predetermined to be the same or different in the protocol. For example, when the protocol is scheduled or configured to report (feedback) a strongest interference (or the best channel quality) for each group of CSI configuration information, each bit in the bitmap represents the interference (channel) reporting of one cell, and 1 indicates the reporting. The information of the strongest interference (best channel) of the cell, 0 indicates that the cell does not report interference (channel) information.
  • each cell reports a maximum of two strongest interferences
  • each of the two bits in the bitmap represents one cell
  • 00 indicates that the UE does not report interference (or channel) information of the cell
  • 01 indicates that the UE reports the cell.
  • 10 indicates information reporting two interferences (channels) of the cell. It can be understood that the number of CSIs included in each group of CSIs that are specifically fed back can also be indicated by other information. This is not limited here.
  • the manner in which the UE determines the N sets of CSIs that need to be fed back may also be applicable, but when a group of CSIs is fed back, the corresponding CSIs are fed back according to the protocol reservation or the network configuration, in comparison.
  • a plurality of CQIs in a set of CSIs to be determined whether to be fed back and a plurality of CQIs in the reference CSI are considered.
  • one manner is: respectively, multiple CQIs (such as 3 CQIs, corresponding to 3 codewords) in a group of CSIs to be determined whether to feed back, and multiple CQIs in the reference CSI (such as 3 CQIs, Corresponding to the three codewords, respectively, to obtain the difference of the corresponding number (for example, three CQIs are compared with three CQIs in the reference CSI to obtain nine differences), and the function of the obtained difference is obtained (the function) It can be compared with the corresponding threshold value to determine whether the set of CSI is fed back, whether it is the largest, the smallest, or the average, or other mathematical operations.
  • another method is: comparing a maximum value of multiple CQIs in a group of CSIs to be determined whether to be fed back with a maximum value or a minimum value of multiple CQIs in a reference CSI, and obtaining a difference value and corresponding
  • the threshold values are compared, or the minimum values of the plurality of CQIs in a set of CSIs to be determined whether to be fed back are compared with the maximum or minimum values of the plurality of CQIs in the reference CSI, and the obtained difference values are corresponding to The threshold values are compared to determine whether the set of CSIs is fed back.
  • the specific threshold value may be different according to the function of the foregoing difference value or the object to be compared.
  • the determination of the threshold value may be predefined by a protocol or configured by a network device, and is not limited herein. .
  • each CSI in each group of CSIs may be the same or different.
  • the content included in each group of CSIs is RI, a combination of one or more of the full-band or sub-band PMI and CQI, and may also be referred to as a CSI type, such as only including RI and full-band PMI, or Only RI and sub-band PMI are included, or include RI, full-band PMI, and CQI, or include RI, sub-band PMI, and CQI, which are not fully listed here.
  • the type of the CSI may be pre-defined by a protocol or configured by a network device, for example, the UE receives information indicating a type of each group of CSIs from the network device, and the information indicating the type of each group of CSIs may be carried in a high-level letter.
  • the information indicating the type of each group of CSI may be carried in the foregoing CSI configuration information for configuration.
  • the indication information may be added to the CSI process cell information to indicate that the CSI configuration information indicated by the CSI process only needs to feed back the RI and the PMI, and does not need to feed back the CQI.
  • the pmi-ReportProc-r14 cell in the following cell may be added to the CSI process cell information to indicate that the CSI configuration information indicated by the CSI process only needs to feed back the RI and the PMI, and does not need to feed back the CQI.
  • the indication information may be added to the NZP CSI-RS resource information in the CSI process cell information, where the CSI configuration information indicated by the NZP CSI-RS resource information is only required to feed back the RI and the PMI. No need to feedback CQI.
  • csi-RS-ConfigNZPIDList-r11 in the following cell indicates multiple sets of NZP CSI-RS resource information
  • pmi-ReportNZPList-r14 indicates which of the CSI configuration information indicated by multiple sets of NZP CSI-RS resource information only needs feedback RI.
  • PMI no feedback CQI.
  • the UE may not feed back the corresponding CSI for all configured CSI configuration information, so that the number of resources required for CSI feedback in cooperation may be reduced on the one hand, and the network device may be beneficial on the other hand. More efficient execution scheduling. Further, the CSI fed back by the UE is filtered on the UE side, which can improve the effectiveness of the fed back CSI for scheduling the network device.
  • An embodiment of the present application further provides another CSI feedback method, which is different from the previous method, in which the MSI CSI configuration information in S101 does not include CSI configuration information corresponding to the serving cell of the user equipment, M is an integer greater than or equal to 1; correspondingly, in S102, the N sets of CSIs do not include CSI corresponding to CSI configuration information of the serving cell and the N is an integer greater than or equal to 0 and not greater than M. Then, when the indication information in S103 is in the form of a bitmap, the indication information includes M groups of bits, each group of bits includes at least 1 bit, and each group of bits indicates a group of CSI configuration information in the M group of CSI configuration information. Whether the corresponding CSI is fed back by the user equipment.
  • the manner in which the UE determines the N sets of CSIs to be fed back does not include the CSI feedback corresponding to the CSI configuration information of the serving cell of the UE, and does not include the CSI of the serving cell corresponding to the UE.
  • the CSI of the configuration information is used as a scheme of the reference CSI.
  • Other schemes such as reporting a group of CSIs indicating the best channel quality in the M-group CSI corresponding to the M-group CSI configuration information, and/or as the reference CSI and other M-
  • the scheme for comparing the M-1 group CSI corresponding to one group of CSI configuration information is still applicable.
  • the descriptions of other aspects in the present CSI feedback method can be referred to the description in the foregoing CSI feedback method.
  • the indication information for indicating the N sets of CSI configuration information corresponding to the N sets of CSIs and the reporting of the N sets of CSI may be specifically performed in a combination of one or more of the following manners:
  • a PUCCH format may be defined for transmitting the indication information. For example, defining PUCCH format 6: feedback corresponding to indication information under multi-cell (or TP) measurement
  • the UE may first transmit the indication information in the PUCCH format 6, and then transmit the CSI indicated by the indication information in the PUCCH format 2, 2a, or 2b.
  • the CSI may be transmitted in the PUCCH format 2, 2a, or 2b, and the indication information corresponding to the CSI may be transmitted in the PUCCH format 6.
  • the processing of the CSI by the network device depends on the indication information indicating the CSI.
  • the feedback of the indication information may be periodically indicated by the CSI configuration information (which may be consistent with the period of the CSI feedback), or may be indicated by other information that the feedback of the indication information is periodic.
  • the configuration of the indication information period may be performed by adding signaling (such as a bitmap) to the indication signaling of the existing CQI feedback period, such as a bitmap-indicator-ConfigIndex, for indicating a feedback period of the indication information.
  • signaling such as a bitmap
  • the existing CQI feedback period such as a bitmap-indicator-ConfigIndex
  • the time domain resource that feeds back the indication information may be obtained according to N pd and N OFFSET, Inc. , where N pd is a feedback period of the indication information, and N OFFSET, Inc. is a start position and a subframe of the time domain resource.
  • the offset of the starting position For example: the radio frame number is n f and the slot number is n s when the formula is satisfied
  • a resource in the time slot with N OFFSET, Indicator as a starting position is used for transmission of the indication information.
  • the specific N pd and N OFFSET, the indicator can be pre-defined by the protocol, can also be configured through the network device, and can also be configured in an indirect manner. If the network device is configured with N pd and N OFFSET, the indicators related to the indicator, such as I Indicator , the user The device can obtain the values of the corresponding N pd and N OFFSET, Indicator according to the preset relationship among the three (an example is as follows).
  • the I indicator can be configured by the network device according to the actual situation. For example, when the UE moves at a high speed, the value of the corresponding I Indicator can be small, and the moving speed of the UE is small, and the value of the corresponding I Indicator can be large.
  • the feedback period of the indication information may also be obtained according to a CQI feedback period without additional signaling.
  • the feedback period of the indication information may be the same as the CQI feedback period, such as a full-band CQI period or The sub-band has a CQI cycle.
  • the specific CQI feedback period can be obtained by the existing method, or can be obtained by other means, and will not be described here.
  • the PUCCH of the PUCCH format 6 can be sent on both sides of the working bandwidth, for example, occupying one RB position on each side of the working bandwidth.
  • a resource may be allocated on the resource occupied by the PUSCH for the transmission of the indication information. For example, one or more subcarriers or one or more symbols may be allocated, or a certain pattern is corresponding. Time-frequency resources.
  • the indication information may be reported in the same time unit as the CSI information, such as a subframe, or may be reported in a different subframe.
  • the UE Before reporting the CSI, the UE may report the corresponding indication information, or report the corresponding indication information after reporting the CSI.
  • the feedback mode of the N sets of CSIs may be:
  • the UE may report the N sets of CSI information corresponding to the N sets of CSI configuration information in the same subframe.
  • the existing multi-CSI feedback format such as format4-MultiCSI-resourceConfiguration or format5-MultiCSI-resourceConfiguration, can be used for reporting.
  • the reporting period is the reporting period of the CSI that is predefined by the protocol or configured by the network device. or,
  • the N sets of CSIs are transmitted in different subframes.
  • the report is performed in the order of increasing the identifier (ID) of the corresponding N sets of CSI configuration information (such as the NZP CSI-RS ID or the CSI-IM ID).
  • the indication information is reported before the N sets of CSIs are reported. If the indication information indicates that the CSI corresponding to the CSI configuration information is not reported, the ID corresponding to the next set of CSI configuration information indicated by the indication information indicated in the indication information may be reported in the corresponding subframe for reporting the CSI.
  • the CSI, or the UE does not transmit information on the corresponding subframe, and the network device schedules other UEs to perform information transmission (because the network device knows that the UE is not reported by the indication information, other UEs may be scheduled for transmission. ).
  • the UE reports the N sets of CSIs corresponding to the N sets of CSI configuration information according to the CSI period.
  • the N sets of CSIs are reported in the same subframe.
  • the existing format4-MultiCSI-resourceConfiguration or format5-MultiCSI-resourceConfiguration can be used for reporting. or,
  • the UE reports the N sets of CSIs corresponding to the N sets of CSI configuration information according to the foregoing period for indicating the N sets of CSI configuration information corresponding to the N sets of CSIs, and can report the N sets of CSI information in the same Reported in a sub-frame.
  • the existing format4-MultiCSI-resourceConfiguration or format5-MultiCSI-resourceConfiguration can be used for reporting.
  • the resource configuration methods of the format4 and the format5 may refer to the manner in the existing protocol, as follows:
  • the UE may transmit the N sets of CSIs in different subframes.
  • the CSI process ID is reported in the order of increasing.
  • the corresponding indication information may be reported before the CSI is reported. If the indication information indicates that the CSI corresponding to the CSI configuration information is not reported, the CSI corresponding to the ID of the next set of CSI configuration information with the feedback indicated in the indication information may be reported in the corresponding subframe for reporting the CSI. Or, the UE does not transmit information on the corresponding subframe, and the network device schedules other UEs to perform information transmission (because the network device knows that the UE is not reported by the indication information, other UEs may be scheduled for transmission).
  • FIG. 2 is a schematic diagram of a scenario applied to an embodiment of the present application, including a first transmission point TP1 and a second transmission point TP2, a cell 1 managed by TP1, and a cell 2 managed by TP2, and UE1 and UE2.
  • the embodiment of the present application further provides a device for CSI feedback, which may be the user equipment described in the foregoing method, or other device capable of implementing the action of the user equipment in the foregoing method.
  • FIG. 3a and 3b are schematic structural diagrams of an apparatus for channel state feedback (or channel state information feedback) according to an embodiment of the present invention.
  • the apparatus may include: a receiving unit 301, a transmitting unit 302, and a processing unit 303, where:
  • the receiving unit 301 is configured to perform a receiving action performed by the user equipment described in the foregoing method
  • the sending unit 302 is configured to perform a sending action performed by the user equipment described in the foregoing method
  • the processing unit 303 can be configured to perform the corresponding processing described in the foregoing method on the signal received by the receiving unit 301, and/or perform the corresponding processing described in the foregoing method on the signal to be sent by the sending unit 302, and send the corresponding method by using the foregoing method.
  • Unit 302 transmits the signal.
  • the receiving unit 301 and the sending unit 302 can be implemented by using the transceiver 3001 in FIG. 3b, and the processing unit 303 can be implemented by using the processor 3002, or by using the processor 3002 and the memory 3003.
  • the receiving unit 301 can be configured to receive M group CSI configuration information from the network device, where M is an integer greater than or equal to 1;
  • the processing unit 303 is configured to: according to the CSI configuration information, feed back, by the sending unit 302, corresponding to the N sets of CSIs in the M group CSI of the M group CSI configuration information, where N is an integer greater than or equal to 0 and not greater than M.
  • the apparatus may include: a transceiver 3001 and a processor 3002.
  • the processor 3002 is configured to control the operation of the apparatus, including transmitting (including receiving and/or transmitting) data through the transceiver 3001.
  • a memory 3003 may be included.
  • the memory 3003 may include a read only memory and a random access memory for providing instructions and data to the processor 3002.
  • the memory 3003 may be integrated in the processor 3002 or may be independent of the processor 3002.
  • a portion of the memory 3003 may also include non-volatile line random access memory (NVRAM).
  • NVRAM non-volatile line random access memory
  • bus system 3009 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • bus system 3009 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 3009 in the figure.
  • the flow disclosed in the embodiment of the present application may be applied to the processor 3002 or implemented by the processor 3002.
  • each step of the process implemented by the device may be completed by an integrated logic circuit of hardware in the processor 3002 or an instruction in the form of software.
  • the processor 3002 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 3003, and the processor 3002 reads the information in the memory 3003, and completes the steps of the instruction flow of the embodiment of the present invention in combination with the hardware thereof.
  • the device when it is a user equipment, it may further include an input device, such as a keyboard, an output device, such as a display screen, and the like, and details are not described herein.
  • an input device such as a keyboard
  • an output device such as a display screen, and the like, and details are not described herein.
  • the embodiment of the present invention further provides an apparatus for channel state feedback (or channel state information acquisition), which may be the network device described in the above method, and more specifically may be A transmission point, such as a base station, may also be a device capable of implementing the corresponding functions of the network device described in the above method.
  • the apparatus may include: a transmitting unit 401, a receiving unit 402, and a processing unit 403, where:
  • the sending unit 401 is configured to perform a sending action performed by the network device described in the foregoing method
  • the receiving unit 402 is configured to perform a receiving action performed by the network device described in the foregoing method
  • the processing unit 403 can be configured to perform the corresponding processing described in the foregoing method on the signal received by the receiving unit 402, and/or perform the corresponding processing described in the foregoing method on the signal to be sent by the sending unit 401 and pass the The transmitting unit 401 transmits the signal.
  • the receiving unit 402 and the sending unit 401 can be implemented by using the transceiver 4001 in FIG. 4b, and the processing unit 403 can be implemented by using the processor 4002, or by using the processor 4002 and the memory 4003.
  • the sending unit 401 is configured to send M group CSI configuration information to the user equipment, where M is an integer greater than or equal to 1;
  • the receiving unit 402 is configured to receive N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information from the user equipment, where N is an integer greater than or equal to 0 and not greater than M.
  • the network device can include a transceiver 4001, a processor 4002, and a memory 4003.
  • the processor 4002 is configured to control the operation of the apparatus, including transmitting (including receiving and/or transmitting) data through the transceiver 4001;
  • the memory 4003 may include a read only memory and a random access memory for providing instructions to the processor 4002. And data.
  • a portion of the memory 4003 may also include non-volatile line random access memory (NVRAM).
  • NVRAM non-volatile line random access memory
  • the various components of the apparatus are coupled together by a bus system, wherein the bus system 4009 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 4009 in the figure.
  • the flow disclosed in the embodiment of the present application may be applied to the processor 4002 or implemented by the processor 4002.
  • the steps of the process implemented by the device may be completed by the integrated logic circuit of the hardware in the processor 4002 or the instruction in the form of software.
  • the processor 4002 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 4003, and the processor 4002 reads the information in the memory 4003, and completes the steps of the instruction flow of the embodiment of the present invention in combination with the hardware thereof.
  • the network device When the network device is a base station, the network device may further include a communication interface module for communicating with other base stations or other network elements, such as a core network element.
  • the embodiment of the present application further provides a system, including the foregoing apparatus for CSI feedback and the apparatus for CSI obtaining, and the system may be a communication system or other systems.
  • the content reported by the UE meets the threshold requirement.
  • the UE reports the neighboring cell interference (or the neighboring cell channel state)
  • only the threshold is met, so the UE can determine the strength of the neighbor cell interference (or the neighbor cell channel quality) through the threshold value (or good or bad).
  • the base station in this area excludes weak interference that does not help the scheduling of the serving base station (or provides better cooperation point information for cooperative transmission).
  • the feedback overhead is reduced, and on the other hand, the serving base station (the base station to which the serving cell belongs) is more efficient to execute the scheduling algorithm.
  • the number of strongest interferences that can be reported in one neighboring cell (the number of channels with the best channel quality) is predefined or pre-configured, which regulates UE behavior, avoids the occurrence of malicious UEs, and can reduce the feedback amount of the UE.
  • the reported neighbor interference includes the channel RI and PMI measured by the UE to the neighboring base station, and does not include the CQI information. Compared with all the measurement information in the prior art, the feedback overhead of the CQI is reduced.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • at least one of A, B, or C means that at least one of the sets (A, B, C), such as A, B, C, A, and B, A and C, is selected. B and C, or, A and B and C, etc.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some transceivers, devices or units, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processor, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • connection may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital STA line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media.
  • a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • the computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or a processor of other programmable data processing device such that instructions executed by a processor of the computer or other programmable data processing device can be implemented in a flowchart
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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Abstract

Embodiments of the present application provide a method and a device for channel state information (CSI) feedback. The method comprises: A user equipment receiving M groups of CSI configuration information from a network device, M being an integer greater than or equal to one, and the M groups of the CSI configuration information comprising CSI configuration information corresponding to a serving cell of the user equipment; and the user equipment feeding back, according to the CSI configuration information, N groups of M groups of CSI corresponding to the M groups of the CSI configuration information, N being an integer greater than or equal to zero and not greater than M. The method can reduce CSI feedback overhead and improve effectiveness of CSI feedback.

Description

一种信道状态反馈的方法及装置Method and device for channel state feedback 技术领域Technical field
本发明涉及通信领域,尤其涉及一种信道状态反馈的方法及装置。The present invention relates to the field of communications, and in particular, to a method and apparatus for channel state feedback.
背景技术Background technique
下一代移动通信系统要求大容量和高质量的数据传输。多输入多输出(MIMO)技术被认为是可实现未来高速数据传输的关键技术之一,在第四代(4G)及第五代(5G)的移动通信系统中有着广阔的应用前景。传统的集中式MIMO系统的多根发射天线均集中于基站(BS)端。与集中式MIMO不同,分布式MIMO系统的多根发射天线分布于不同的地理位置,其各对收发链路之间更加独立,具有大容量、低功耗、更好的覆盖、对人体的低电磁损害等优势,被认为是未来无线通信系统的备选方案之一。在分布式MIMO的情况下,现有技术协同多点传输(CoMP,Coordinated Multipoint Transmission)被认为是一种解决小区间干扰问题并提升边缘用户吞吐量的有效方法。CoMP技术中多个相邻小区可以联合处理或协调边缘用户来避免干扰并提升边缘用户吞吐量。Next generation mobile communication systems require large capacity and high quality data transmission. Multiple Input Multiple Output (MIMO) technology is considered to be one of the key technologies for realizing high-speed data transmission in the future. It has broad application prospects in the fourth generation (4G) and fifth generation (5G) mobile communication systems. A plurality of transmit antennas of a conventional centralized MIMO system are concentrated on a base station (BS) side. Different from centralized MIMO, multiple transmit antennas of distributed MIMO systems are distributed in different geographical locations, and each pair of transceiver links is more independent, with large capacity, low power consumption, better coverage, and low body. Advantages such as electromagnetic damage are considered to be one of the alternatives for future wireless communication systems. In the case of distributed MIMO, the prior art Coordinated Multipoint Transmission (CoMP) is considered to be an effective method for solving inter-cell interference problems and improving edge user throughput. Multiple neighbor cells in CoMP technology can jointly process or coordinate edge users to avoid interference and improve edge user throughput.
在CoMP技术中,协调会带来信令的交互,如何在协调的时候提升资源的利用率,减少信令资源的浪费,是当前研究中亟需解决的一个问题。In CoMP technology, coordination brings about signaling interactions. How to improve resource utilization and reduce signaling resource waste during coordination is an urgent problem to be solved in current research.
发明内容Summary of the invention
本发明实施例提供了一种信道状态反馈方法及装置,用于减少信道状态反馈的开销,提高信道状态反馈的有效性。The embodiment of the invention provides a channel state feedback method and device for reducing the overhead of channel state feedback and improving the effectiveness of channel state feedback.
第一方面,本发明实施例提供一种信道状态反馈方法,包括:In a first aspect, an embodiment of the present invention provides a channel state feedback method, including:
用户设备接收来自网络设备的M组信道状态信息(CSI)配置信息,其中,M为大于或等于1的整数;所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息,或者,所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息;The user equipment receives M group channel state information (CSI) configuration information from the network device, where M is an integer greater than or equal to 1; the M group CSI configuration information includes a CSI configuration corresponding to the serving cell of the user equipment. Information, or the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M group CSI configuration information;
所述用户设备根据所述CSI配置信息反馈对应于所述M组CSI配置信息的M组CSI中的N组CSI,The user equipment feeds back N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information according to the CSI configuration information,
其中,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息时,所述N为大于或等于1且不大于M的整数,所述N组CSI至少包括对应于所述服务小区的CSI配置信息的CSI;或者,When the M-group CSI configuration information includes the CSI configuration information of the serving cell of the user equipment, the N is an integer greater than or equal to 1 and not greater than M, and the N-group CSI includes at least CSI of the CSI configuration information of the serving cell; or
所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息时,N组CSI不包括对应于所述服务小区的CSI配置信息的CSI且所述N为大于或等于0且不大于M的整数。 When the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M-group CSI configuration information, the N-group CSI does not include the CSI corresponding to the CSI configuration information of the serving cell, and the N is greater than or equal to 0 and an integer not greater than M.
可选的,每组CSI配置信息包括一个小区标识,一个CSI进程标识(ID),或一个一套非零功率参考信号资源的标识中的至少一个,其中,所述小区为与所述用户设备相关联的小区,相关联的小区包括用户设备的服务小区,或,与用户设备的服务小区协作的小区;所述CSI进程对应于一套非零功率参考资源的标识。Optionally, each group of CSI configuration information includes at least one of a cell identifier, a CSI process identifier (ID), or an identifier of a set of non-zero power reference signal resources, where the cell is the user equipment. The associated cell, the associated cell includes a serving cell of the user equipment, or a cell that cooperates with the serving cell of the user equipment; the CSI process corresponds to an identifier of a set of non-zero power reference resources.
可选地,还包括:所述用户设备反馈指示信息,所述指示信息用于指示所述用户设备所反馈的N组CSI所对应的N组CSI配置信息。Optionally, the method further includes: the user equipment feedback indication information, where the indication information is used to indicate N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment.
可选地,还包括:所述用户设备接收来自所述网络设备的指示每组CSI的类型的信息。可选的,指示每组CSI的类型的信息可以为预定义的,或者,携带在所述CSI配置信息中,或者,携带在其他RRC信令或物理层信令中。Optionally, the method further includes: the user equipment receiving information from the network device indicating a type of each group of CSIs. Optionally, the information indicating the type of each group of CSI may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
可选地,还包括,所述用户设备接收来自所述网络设备的指示每组CSI所包括的CSI的个数信息。可选的,指示每组CSI所包括的CSI的个数的信息可以为预定义的,或者,携带在所述CSI配置信息中,或者,携带在其他RRC信令或物理层信令中。Optionally, the method further includes: receiving, by the user equipment, information about the number of CSIs included in each group of CSIs from the network device. Optionally, the information indicating the number of CSIs included in each group of CSIs may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
第二方面,本发明实施例提供一种信道状态反馈方法,包括:In a second aspect, an embodiment of the present invention provides a channel state feedback method, including:
网络设备向用户设备发送M组信道状态信息(CSI)配置信息,其中,M为大于或等于1的整数;所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息,或者,所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息;The network device sends M group channel state information (CSI) configuration information to the user equipment, where M is an integer greater than or equal to 1; the M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment. Or, the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M group CSI configuration information;
所述网络设备接收来自所述用户设备的对应于所述M组CSI配置信息的M组CSI中的N组CSI,The network device receives N sets of CSIs in the M sets of CSIs corresponding to the M sets of CSI configuration information from the user equipment,
其中,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息时,所述N为大于或等于1且不大于M的整数;或者,Wherein, when the M group CSI configuration information includes the CSI configuration information of the serving cell of the user equipment, the N is an integer greater than or equal to 1 and not greater than M; or
所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息时,N组CSI不包括对应于所述服务小区的CSI配置信息的CSI且所述N为大于或等于0且不大于M的整数。When the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M-group CSI configuration information, the N-group CSI does not include the CSI corresponding to the CSI configuration information of the serving cell, and the N is greater than or equal to 0 and an integer not greater than M.
可选的,还包括:Optionally, it also includes:
接收来自用户设备的指示信息,所述指示信息用于指示所述用户设备所反馈的N组CSI所对应的N组CSI配置信息。可选的,还包括,所述网络设备向所述网络设备发送用于指示每组CSI的类型的信息。可选的,所述用于指示每组CSI的类型的信息可以为预定义的,或者,携带在所述CSI配置信息中,或者,携带在其他RRC信令或物理层信令中。Receiving indication information from the user equipment, where the indication information is used to indicate N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment. Optionally, the network device further sends, to the network device, information indicating a type of each group of CSIs. Optionally, the information used to indicate the type of each group of CSI may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
可选的,还包括,所述网络设备向所述用户设备发送用于指示每组CSI所包括的CSI 的个数信息。可选的,每组CSI所包括的CSI的个数信息可以为预定义的,或者,携带在所述CSI配置信息中,或者,携带在其他RRC信令或物理层信令中。Optionally, the method further includes: sending, by the network device, the CSI included in each group of CSIs to the user equipment Number of information. Optionally, the number of CSIs that are included in each group of CSIs may be predefined, or carried in the CSI configuration information, or carried in other RRC signaling or physical layer signaling.
基于第一方面或第二方面的方法,其中,A method based on the first aspect or the second aspect, wherein
可选的,所述每组CSI的类型包括秩指示(RI)和/或预编码矩阵信息(PMI),或者,Optionally, the type of each group of CSIs includes a rank indication (RI) and/or precoding matrix information (PMI), or
每组CSI的类型包括信道质量信息(CQI),和,秩指示和/或预编码矩阵信息。The types of CSI for each group include channel quality information (CQI), and, rank indication and/or precoding matrix information.
可选的,所述指示信息包括M组比特,每组比特包括至少1个比特,且每组比特指示所述M组CSI配置信息中的一组CSI配置信息所对应的CSI是否被所述用户设备反馈。Optionally, the indication information includes M groups of bits, each group of bits includes at least 1 bit, and each group of bits indicates whether a CSI corresponding to a group of CSI configuration information in the M group of CSI configuration information is used by the user. Device feedback.
可选的,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息时,所述指示信息包括M-1组比特,每组比特包括至少1个比特,且每组比特指示所述M组CSI配置信息中除所述服务小区的CSI配置信息外的M-1组CSI配置信息中的一组CSI配置信息所对应的CSI是否被所述用户设备反馈。Optionally, when the MSI CSI configuration information includes the CSI configuration information of the serving cell of the user equipment, the indication information includes M-1 group bits, each group of bits includes at least 1 bit, and each The group bit indicates whether the CSI corresponding to a group of CSI configuration information in the M-1 group CSI configuration information except the CSI configuration information of the serving cell in the M group CSI configuration information is fed back by the user equipment.
可选的,所述N组CSI按照预定的顺序进行反馈,所述预定的顺序与所述M组比特的顺序相关;或者,所述N组CSI被携带在对应于M组CSI的M组资源中的N组资源中进行反馈,其中,M组CSI的M组资源的顺序与所述M组比特的顺序相关,所述M组资源中用于携带所述N组CSI之外的资源不用于携带CSI。Optionally, the N sets of CSIs are fed back in a predetermined order, where the predetermined order is related to the order of the M sets of bits; or the N sets of CSIs are carried in the M sets of resources corresponding to the M sets of CSIs. The N sets of resources in the M group are fed back, wherein the order of the M sets of CSIs of the M sets of CSIs is related to the order of the M sets of bits, and the resources of the M sets of resources for carrying the N sets of CSI are not used. Carry CSI.
可选的,所述N组CSI按照预定的顺序进行反馈,所述预定的顺序与所述M-1组比特的顺序相关;或者,所述N组CSI被携带在对应于M-1组CSI的M-1组资源中的N组资源中进行反馈,其中,M-1组CSI的M-1组资源的顺序与所述M-1组比特的顺序相关,所述M-1组资源中用于携带所述N组CSI之外的资源不用于携带CSI。Optionally, the N sets of CSIs are fed back in a predetermined order, where the predetermined order is related to the order of the M-1 group bits; or the N sets of CSIs are carried in the C1 group corresponding to the M-1 group. The N-group resources in the M-1 group resources are fed back, wherein the order of the M-1 group resources of the M-1 group CSI is related to the order of the M-1 group bits, and the M-1 group resources are Resources for carrying the N sets of CSIs are not used to carry CSI.
可选的,每组比特的值指示对应的CSI配置信息所对应的一组CSI中CSI的个数。Optionally, the value of each group of bits indicates the number of CSIs in a group of CSIs corresponding to the corresponding CSI configuration information.
可选的,所述CSI的个数根据每组CSI配置信息所需反馈的CSI的个数确定,所述每组CSI配置信息所需反馈的CSI的个数为预定义的,或,通过高层信令或者物理层信令配置的。Optionally, the number of CSIs is determined according to the number of CSIs that are required to be fed back by each group of CSI configuration information, and the number of CSIs required to be fed back by each group of CSI configuration information is predefined, or Signaling or physical layer signaling configuration.
可选的,所述指示信息包括与所述N组CSI中的每一组CSI所对应的每组CSI配置信息的标识信息。Optionally, the indication information includes identifier information of each group of CSI configuration information corresponding to each group of CSIs in the N groups of CSIs.
可选的,所述N组CSI的反馈顺序与所对应的N组CSI配置信息的标识信息的顺序相关。Optionally, the feedback order of the N sets of CSIs is related to the order of the identifier information of the corresponding N sets of CSI configuration information.
可选的,所述用户设备根据所述CSI配置信息反馈对应于所述M组CSI配置信息的M组CSI中的N组CSI,包括:Optionally, the user equipment, according to the CSI configuration information, the N sets of CSIs in the M group of CSIs corresponding to the M group of CSI configuration information, including:
所述用户设备根据所述M组CSI配置信息获得对应的M组CSI,根据确定的原则确 定并反馈所述M组CSI中的N组CSI。The user equipment obtains the corresponding M group CSI according to the M group CSI configuration information, according to the determined principle. And N pairs of CSIs in the M group CSI are determined and fed back.
可选的,所述确定的原则包括以下方式中的一种或多种的组合:Optionally, the determined principle includes a combination of one or more of the following:
方式1.根据M组CSI中每组CSI与相应的门限值的比较,确定并反馈所述M组CSI中的N组CSI; Method 1. Determine and feed back N sets of CSIs in the M sets of CSI according to comparison of each group of CSIs in the M group CSI with corresponding threshold values;
可选的,所述每组CSI的类型相同或不同,所述CSI的类型指示所述每组CSI包括RI,全带或子带PMI,或CQI中的一个或多个的组合。Optionally, the type of the CSI is the same or different, and the type of the CSI indicates that each group of CSIs includes an RI, a full band or a subband PMI, or a combination of one or more of the CQIs.
可选的,所述指示每组CSI的类型的信息承载在所述CSI配置信息中。Optionally, the information indicating the type of each group of CSI is carried in the CSI configuration information.
可选的,所述网络设备为所述用户设备的服务小区所属的网络设备。Optionally, the network device is a network device to which the serving cell of the user equipment belongs.
可选的,所述M组CSI配置信息携带在一条CSI进程中,或者,携带在M条CSI进程中,每条CSI进程携带一组CSI配置信息,或者,携带在T条CSI进程中,T大于1且小于或等于M,且T条CSI进程中的一条至少包括2组CSI配置信息。Optionally, the M group CSI configuration information is carried in a CSI process, or is carried in the M CSI processes, and each CSI process carries a set of CSI configuration information, or is carried in the T CSI process, T It is greater than 1 and less than or equal to M, and one of the T CSI processes includes at least 2 sets of CSI configuration information.
第三方面,本发明实施例还提供一种用于无线通信的装置,具体的该装置可以用于信道状态反馈,其包括用于实现以上第一方面所提供方法所需要的功能模块。具体功能模块的划分及描述在此不予赘述。In a third aspect, an embodiment of the present invention further provides an apparatus for wireless communication, where the apparatus may be used for channel state feedback, which includes functional modules required for implementing the method provided by the above first aspect. The division and description of specific functional modules are not described here.
第四方面,本发明实施例提供一种用于无线通信的装置,具体的该装置可以用于信道状态反馈,其包括用于实现以上第二方面所提供方法所需要的功能模块。具体功能模块的划分及描述在此不予赘述。In a fourth aspect, an embodiment of the present invention provides an apparatus for wireless communication, where the apparatus may be used for channel state feedback, which includes functional modules required for implementing the method provided by the above second aspect. The division and description of specific functional modules are not described here.
第五方面,本发明实施例提供的一种网络设备,包括:收发器、处理器和存储器;该网络设备为承载第四方面功能模块的具体结构。A fifth aspect of the present invention provides a network device, including: a transceiver, a processor, and a memory; the network device is a specific structure that carries the fourth aspect functional module.
所述存储器,用于存储计算机程序指令;The memory is configured to store computer program instructions;
所述处理器,耦合到所述存储器,用于读取所述存储器存储的计算机程序指令,并执行如上第二方面所提供的方法。The processor, coupled to the memory, for reading computer program instructions stored by the memory and performing the method as provided in the second aspect above.
上述处理器所执行的流程可参见上述信道状态反馈流程,在此不再详述。For the process performed by the foregoing processor, refer to the channel state feedback process described above, which is not described in detail herein.
第六方面,本发明实施例提供的一种终端(用户设备),包括:收发器、处理器和存储器;该用户设备为承载第三方面功能模块的具体结构。In a sixth aspect, a terminal (user equipment) provided by the embodiment of the present invention includes: a transceiver, a processor, and a memory; the user equipment is a specific structure that carries the functional module of the third aspect.
所述存储器,用于存储计算机程序指令;The memory is configured to store computer program instructions;
所述处理器,耦合到所述存储器,用于读取所述存储器存储的计算机程序指令,并执行如上第一方面所提供的方法。The processor is coupled to the memory for reading computer program instructions stored by the memory and performing the method as provided in the first aspect above.
第七方面,本发明实施例还提供一种程序存储介质,该程序存储介质所存储的程序被执行时,可以实现上述第一方面或第二方面中任意一种可能的实现方式所提供的方法。 In a seventh aspect, the embodiment of the present invention further provides a program storage medium, where the program stored in the program storage medium is executed, the method provided by any one of the foregoing first aspect or the second aspect may be implemented. .
上述处理器所执行的流程可参见上述信道状态信息反馈流程,在此不再详述。For the process performed by the foregoing processor, refer to the foregoing channel state information feedback process, which is not described in detail herein.
本发明实施例还提供一种资源配置的装置,该资源配置的装置可以用于执行第一方面或者第二方面的方法。An embodiment of the present invention further provides an apparatus for configuring a resource, where the apparatus configured by the resource may be used to perform the method of the first aspect or the second aspect.
本发明实施例提供一种计算机可读存储介质,包括计算机程序,当其在计算机上运行时,使得所述第一方面或者第二方面中任意一种可能的实现方式的方法被执行。The embodiment of the present invention provides a computer readable storage medium, including a computer program, when executed on a computer, causes the method of any one of the first aspect or the second aspect to be implemented.
本申请提供的网络设备具有实现上述方法方面中网络设备行为的功能,其包括用于执行上述方法方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现,或硬件实现,或者通过硬件和软件结合来实现。The network device provided by the present application has a function of implementing the behavior of the network device in the above method aspect, and includes means for performing the steps or functions described in the above method aspect. The steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
在一种可能的设计中,上述网络设备包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述网络设备执行上述方法中相应的功能。例如,生成配置信息。所述收发单元用于支持所述网络设备与其他设备通信,实现接收和/或发送功能。例如,发送所述处理器生成的配置信息,和/或,接收CSI等。In one possible design, the network device described above includes one or more processors and communication units. The one or more processors are configured to support the network device to perform corresponding functions in the above methods. For example, generate configuration information. The transceiver unit is configured to support the network device to communicate with other devices to implement receiving and/or transmitting functions. For example, transmitting configuration information generated by the processor, and/or receiving CSI or the like.
可选的,所述网络设备还可以包括一个或多个存储器,所述存储器用于与处理器耦合,其保存网络设备必要的程序指令和数据。所述一个或多个存储器可以和处理器集成在一起,也可以与处理器分离设置。本申请并不限定。Optionally, the network device may further include one or more memories, and the memory is configured to be coupled to the processor, which saves program instructions and data necessary for the network device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
所述网络设备可以为基站或TRP等,所述通信单元可以是收发器,或收发电路。The network device may be a base station or a TRP, etc., and the communication unit may be a transceiver, or a transceiver circuit.
所述网络设备还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。The network device can also be a communication chip. The communication unit may be an input/output circuit or interface of a communication chip.
另一个可能的设计中,上述网络设备,包括收发器、处理器和存储器。该处理器用于控制收发器收发信号,该存储器用于存储计算机程序,该处理器用于从存储器中调用并运行该计算机程序,使得该网络设备执行第二方面、或第二方面中任一种可能实现方式中网络设备完成的方法。In another possible design, the above network device includes a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal for storing a computer program for calling and running the computer program from the memory, such that the network device performs the second aspect, or any one of the second aspects The method of implementing the network device in the implementation mode.
本申请还提供一种装置,该装置具有实现上述方法方面中用户设备行为的功能,其包括用于执行上述方法方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现,或硬件实现,或者通过硬件和软件结合来实现。The present application also provides an apparatus having the functionality to implement the behavior of a user device in the aspects of the method described above, including means for performing the steps or functions described in connection with the method aspects above. The steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
在一种可能的设计中,上述装置包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述装置执行上述方法中相应的功能。例如,解析配置信息。所述收发单元用于支持所述装置与其他设备通信,实现接收和/或发送功能。例如,接收配置信息,和/或,发送CSI等。In one possible design, the above apparatus includes one or more processors and communication units. The one or more processors are configured to support the apparatus to perform the respective functions of the methods described above. For example, parsing configuration information. The transceiver unit is configured to support the device to communicate with other devices to implement receiving and/or transmitting functions. For example, receiving configuration information, and/or, transmitting CSI, and the like.
可选的,所述装置还可以包括一个或多个存储器,所述存储器用于与处理器耦合,其保存装置必要的程序指令和数据。所述一个或多个存储器可以和处理器集成在一起,也可以与处理器分离设置。本申请并不限定。Optionally, the apparatus may further include one or more memories for coupling with the processor, which store program instructions and data necessary for the device. The one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
所述装置可以为智能终端或者可穿戴设备等,所述通信单元可以是收发器,或收发电路。The device may be a smart terminal or a wearable device or the like, and the communication unit may be a transceiver or a transceiver circuit.
所述装置还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。The device can also be a communication chip. The communication unit may be an input/output circuit or interface of a communication chip.
另一个可能的设计中,上述装置,包括收发器、处理器和存储器。该处理器用于控制收发器收发信号,该存储器用于存储计算机程序,该处理器用于从存储器中调用并运行该 计算机程序,使得该装置执行第一方面、或第一方面中任一种可能实现方式中用户设备完成的方法。In another possible design, the above apparatus includes a transceiver, a processor, and a memory. The processor is configured to control a transceiver to send and receive signals, the memory is configured to store a computer program, the processor is configured to call and run the memory from the memory A computer program that causes the apparatus to perform the method of the first aspect, or the user equipment in any of the possible implementations of the first aspect.
本发明的上述实施例中,用户设备可以不反馈对应于所接收的所有M组CSI配置信息的全部或部分CSI,从而可以减少CSI反馈的开销。In the foregoing embodiment of the present invention, the user equipment may not feed back all or part of the CSI corresponding to all the M sets of CSI configuration information received, so that the overhead of CSI feedback may be reduced.
以下对本申请涉及的一些概念进行解释,可以理解的是,这些概念的解释还可以参考现有技术中的解释,在此并不予以限制:The following is a description of some of the concepts involved in the present application. It can be understood that the explanation of these concepts can also refer to the explanation in the prior art, which is not limited herein:
CS/CB:指本小区调度时根据测量的邻区干扰,协调本区和邻区调度结果,以达到干扰规避、减弱的目的。CS/CB: refers to the scheduling result of the local area and the neighboring area according to the measured neighboring area interference during the scheduling of the local cell, so as to achieve the purpose of interference avoidance and weakening.
邻区:在协同多点传输中,多个小区协同共享CSI测量信息或者调度信息,可以协同的多个小区称为在同一协作集中。在某小区进行测量时,协作集中的其他小区称为邻区。Neighbor: In coordinated multipoint transmission, multiple cells cooperatively share CSI measurement information or scheduling information, and multiple cells that can be coordinated are referred to as being in the same cooperation set. When a cell performs measurement, other cells in the collaboration set are called neighbor cells.
邻区干扰:邻区基站调度其范围内某UE时,波束可能对本区某UE造成较大干扰,该干扰为邻区造成的干扰,需要在本区和邻区的调度协调中尽量规避或减弱。Neighbor interference: When a neighboring base station schedules a UE in its range, the beam may cause a large interference to a UE in the area. The interference is caused by the neighboring area and needs to be avoided or weakened in the scheduling coordination of the area and the neighboring area. .
服务小区:与UE有RRC链接的小区或者为该UE传输数据的小区。Serving cell: A cell that has an RRC link with the UE or a cell that transmits data for the UE.
协作:在同一协作集中的基站,可以根据需求而共享各自的CSI测量信息或调度信息。在CS/CB中,典型的协作行为是:服务小区基站获取了邻区基站的测量信息和调度信息,当服务小区所调用的UE受到邻区某波束影响时,服务小区调整该UE的MCS或者转而调度另一个UE或者邻区换波束调度。Collaboration: Base stations in the same collaboration set can share their own CSI measurement information or scheduling information according to their needs. In CS/CB, a typical cooperative behavior is: the serving cell base station acquires measurement information and scheduling information of the neighboring base station. When the UE called by the serving cell is affected by a certain beam in the neighboring cell, the serving cell adjusts the MCS of the UE or In turn, another UE or neighboring zone is scheduled for beam switching.
CSI配置信息包括:The CSI configuration information includes:
1)配置:由基站的RRC信令为UE分配测量资源。UE在分配的资源上测量相应的CSI信息。1) Configuration: The measurement resources are allocated to the UE by the RRC signaling of the base station. The UE measures the corresponding CSI information on the allocated resources.
2)测量资源和相应的测量内容包括:2) Measurement resources and corresponding measurement content include:
a)非零功率参考信号资源(NZP CSI-RS RE):用于测量信道状态信息。信道状态信息包含:RI、PMI、CQI。a) Non-zero power reference signal resource (NZP CSI-RS RE): used to measure channel state information. The channel status information includes: RI, PMI, CQI.
b)干扰测量资源(CSI-IM RE):指服务小区静默,而邻区发送数据、参考信号等,该资源上测得的是邻区干扰的信息。(可选的配置)b) Interference measurement resource (CSI-IM RE): refers to the quietness of the serving cell, and the neighboring area transmits data, reference signals, etc., and the information measured by the neighboring area is detected on the resource. (optional configuration)
服务小区的配置信息:是指用于测量服务小区的信道状态信息的配置信息或者配置信息中的NZP CSI-RS资源上的信号是服务小区发送的Configuration information of the serving cell: refers to configuration information used to measure channel state information of the serving cell or a signal on the NZP CSI-RS resource in the configuration information is sent by the serving cell
附图说明DRAWINGS
图1为本申请实施例提供CSI反馈的方法的流程示意图;FIG. 1 is a schematic flowchart diagram of a method for providing CSI feedback according to an embodiment of the present application;
图2为本申请实施例所应用的CoMP传输的示意图; 2 is a schematic diagram of CoMP transmission applied in an embodiment of the present application;
图3a和图3b为本申请实施例提供的用于CSI反馈的装置的结构示意图;3a and 3b are schematic structural diagrams of an apparatus for CSI feedback provided by an embodiment of the present application;
图4a和图4b为本申请实施例提供的用于CSI获得的装置的结构示意图。4a and 4b are schematic structural diagrams of an apparatus for CSI obtaining according to an embodiment of the present application.
具体实施方式detailed description
下行CoMP技术主要包括联合传输(JT,Joint Transmission)、协同调度和波束成型(CS/CB,Coordinated Scheduling and Beamforming)和动态点选择/关闭(DPS/DPB,Dynamic Point Selection/Dynamic Point Blanking),其中JT分为相干JT和非相干JT。为了实现这些CoMP调度,服务基站需要知道各站点到目标用户的下行信道条件(也称为信道状态,在LTE中,可英文缩写为CSI,在本申请中,信道状态信息均以CSI为缩写,但并不限于此)。在LTE规范中,提供了一种参考信号,即CSI参考信号(Channel State Information Reference Signal,CSI-RS),是终端用来在传输模式9和10的情况下获取CSI的,最多可支持16个CSI-RS,对应16个不同的天线端口,端口号为15~30。UE通过对特定的CSI-RS的测量来估计信道,得到CSI信息并通过物理上行控制信道(Physical uplink control channel,PUCCH)上报给服务基站。所上报的CSI信息可能包含一个信道质量指示(channel quality indicator,CQI),一个秩指示(rank indicator,RI),一个预编码矩阵指示(precoding matrix indicator,PMI)信息中的一种或多种组合。有些上报方式还要求用户上报子带指示(sub-band indicator)。为了配置UE接收和处理指定的CSI-RS,并提供所需的反馈信息,基站需要通过配置高层(Radio resource control,RRC)信令来指示UE。Downlink CoMP technologies mainly include Joint Transmission (JT), Coordinated Scheduling and Beamforming (CS/CB), and Dynamic Point Selection/Dynamic Point Blanking (DPS/DPB). JT is divided into coherent JT and non-coherent JT. In order to implement these CoMP scheduling, the serving base station needs to know the downlink channel conditions of each station to the target user (also referred to as channel state. In LTE, the English abbreviation is CSI. In the present application, the channel state information is abbreviated as CSI. But not limited to this). In the LTE specification, a reference signal, that is, a CSI reference signal (CSI-RS) is provided, which is used by a terminal to acquire CSI in the case of transmission modes 9 and 10, and can support up to 16 channels. The CSI-RS corresponds to 16 different antenna ports, and the port number is 15 to 30. The UE estimates the channel by measuring the specific CSI-RS, and obtains the CSI information and reports it to the serving base station through a physical uplink control channel (PUCCH). The reported CSI information may include a channel quality indicator (CQI), a rank indicator (RI), and one or more combinations of precoding matrix indicator (PMI) information. . Some reporting methods also require the user to report a sub-band indicator. In order to configure the UE to receive and process the specified CSI-RS and provide the required feedback information, the base station needs to indicate the UE by using Radio Resource Control (RRC) signaling.
CS/CB是CoMP技术中一种,指的是本小区调度时考虑邻区是否有对本小区的干扰,并根据邻区的干扰情况,本小区适当调整本小区的调度结果或邻小区适当调整邻小区的调度结果,以达到避开或降低邻区干扰,进而更准确测量本小区信道并更有效调度的目的。CS/CB is one of the CoMP technologies. It refers to whether the neighboring cell has interference to the neighboring cell in the scheduling of the cell, and according to the interference situation of the neighboring cell, the cell appropriately adjusts the scheduling result of the cell or adjusts the neighboring cell appropriately. The scheduling result of the cell is used to avoid or reduce the interference of the neighboring cell, thereby more accurately measuring the channel of the cell and more effectively scheduling.
CS/CB技术采用的CSI测量配置信息为:服务基站可以通过RRC(无线资源控制,radio resource control)信令为目标用户设备(UE,user equipment)配置多条CSI进程(process),在每个CSI进程中会指示UE非零功率(Non-zero power,NZP)CSI-RS配置用于测量信道信息,同时还会指示CSI-IMR(干扰测量资源,Interference measurement resource),用于测量干扰。此外,对于每个CSI进程对应的上报内容也可以相应的在配置中指定;或者,服务基站可以通过RRC(无线资源控制,radio resource control)信令为目标用户设备(UE,user equipment)配置一条CSI进程(process),在每条CSI进程中会指示多套UE非零功率(Non-zero power,NZP)CSI-RS配置用于测量信道信息。The CSI measurement configuration information used by the CS/CB technology is: the serving base station can configure multiple CSI processes (process) for the target user equipment (UE, user equipment) through RRC (radio resource control) signaling. In the CSI process, the non-zero power (NZP) CSI-RS configuration of the UE is used to measure channel information, and the CSI-IMR (Interference Measurement Resource) is also indicated for measuring interference. In addition, the content of the report corresponding to each CSI process may be specified in the configuration. Alternatively, the serving base station may configure a target user equipment (UE, user equipment) through RRC (radio resource control) signaling. The CSI process indicates that multiple sets of UE non-zero power (NZP) CSI-RS configurations are used in each CSI process to measure channel information.
比如现有的RRC信令配置如下,为一条CSI进程的信元信息,其中包括进程标识 (csi-ProcessId),NZP标识(csi-RS-ConfigNZPId)(参考3GPP TS 36.331-d00):For example, the existing RRC signaling configuration is as follows: a cell information of a CSI process, including a process identifier. (csi-ProcessId), NZP identifier (csi-RS-ConfigNZPId) (refer to 3GPP TS 36.331-d00):
Figure PCTCN2017097146-appb-000001
Figure PCTCN2017097146-appb-000001
Figure PCTCN2017097146-appb-000002
Figure PCTCN2017097146-appb-000002
Figure PCTCN2017097146-appb-000003
Figure PCTCN2017097146-appb-000003
具体的CSI进程中的域的描述可以参考: For a description of the fields in a specific CSI process, refer to:
Figure PCTCN2017097146-appb-000004
Figure PCTCN2017097146-appb-000004
Figure PCTCN2017097146-appb-000005
Figure PCTCN2017097146-appb-000005
Figure PCTCN2017097146-appb-000006
Figure PCTCN2017097146-appb-000006
具体的NZP CSI-RS的信元可以参考如下描述:The specific NZP CSI-RS cells can be described as follows:
Figure PCTCN2017097146-appb-000007
Figure PCTCN2017097146-appb-000007
Figure PCTCN2017097146-appb-000008
Figure PCTCN2017097146-appb-000008
关于CSI测量内容的反馈,可以通过配置反馈方式(本申请中也称为CSI反馈配置信息),决定UE上报的内容。其中,UE上报的内容包括UE反馈的CSI的类型,即CSI包括的RI,PMI和CQI中的一种或多种的组合的情况。Regarding the feedback of the CSI measurement content, the content reported by the UE may be determined by configuring a feedback manner (also referred to as CSI feedback configuration information in this application). The content reported by the UE includes a type of CSI fed back by the UE, that is, a combination of one or more of RI, PMI, and CQI included in the CSI.
在本申请中,CSI测量配置信息和CSI反馈配置信息统称为CSI配置信息。CSI配置信息可以包括CSI测量配置信息和/或CSI反馈配置信息。 In the present application, CSI measurement configuration information and CSI feedback configuration information are collectively referred to as CSI configuration information. The CSI configuration information may include CSI measurement configuration information and/or CSI feedback configuration information.
比如3GPP 36.213-d01中给出了如下方式:For example, the following is given in 3GPP 36.213-d01:
CQI and PMI Feedback Types for PUSCH CSI reporting Modes(对应于PUSCH(物理上行共享信道,physical uplink shared channel)CSI上报模式的CQI和PMI反馈类型)CQI and PMI Feedback Types for PUSCH CSI reporting Modes (corresponding to CQI and PMI feedback types of PUSCH (physical uplink shared channel) CSI reporting mode)
Figure PCTCN2017097146-appb-000009
Figure PCTCN2017097146-appb-000009
CQI and PMI Feedback Types for PUCCH CSI reporting Modes(对应于PUCCH(物理上行控制信道,physical uplink control channel)CSI上报模式的CQI和PMI反馈类型)CQI and PMI Feedback Types for PUCCH CSI reporting Modes (corresponding to CQI and PMI feedback types of PUCCH (physical uplink control channel) CSI reporting mode)
Figure PCTCN2017097146-appb-000010
Figure PCTCN2017097146-appb-000010
以上描述中基于CSI配置信息,UE的服务小区所属的基站为UE配置多个CSI进程,或者一个CSI进程中的多个NZP CSI-RS资源,以测量信道信息。在对应的资源上,参与CoMP的其他小区发送CSI-RS信息,因此UE可以测得其他小区到该UE的信道信息。然而,如果UE不需要在其他小区和本UE之间发送信息,UE只需要获知其他小区到本UE的RI/PMI(“/”代表“和/或”),因此CQI信息不需反馈。按照以上描述,并没有某一种CSI进程可以不反馈CQI信息,也没有某一种NZP CSI-RS资源可以不反馈CQI,同时,PUCCH 和PUSCH的反馈配置中,也没有某一种配置可以不反馈CQI信息。因此,CS/CB技术中,可以增加信令,如高层信令(如RRC信令),使针对某CSI进程或NZP CSI-RS资源只反馈RI和PMI,不反馈CQI。In the above description, based on the CSI configuration information, the base station to which the serving cell of the UE belongs configures multiple CSI processes for the UE, or multiple NZP CSI-RS resources in one CSI process to measure channel information. On the corresponding resource, other cells participating in the CoMP send CSI-RS information, so the UE can measure channel information of other cells to the UE. However, if the UE does not need to transmit information between other cells and the UE, the UE only needs to know the RI/PMI of other cells to the UE ("/" stands for "and/or"), so the CQI information does not need feedback. According to the above description, no CSI process may not feed back CQI information, and no NZP CSI-RS resource may not feed back CQI. At the same time, PUCCH In the feedback configuration of the PUSCH and the PUSCH, there is no configuration that does not feed back CQI information. Therefore, in the CS/CB technology, signaling may be added, such as high-level signaling (such as RRC signaling), so that only RI and PMI are fed back to a CSI process or NZP CSI-RS resources, and CQI is not fed back.
在CS/CB中,协作集的大小取决于网络密集度、业务需求等,因此在某些情况下,协作集内所包含的小区个数可能较大。多小区协作时,每个小区可能都有若干干扰波束,多个小区有更多干扰波束,这造成UE测量得到的结果众多。在UE所测量的众多干扰中,部分干扰对于该UE是强干扰,部分干扰则是弱干扰,强干扰需要反馈给本小区所属的基站,弱干扰则不需要反馈。在目前的协议中,UE所上报的内容完全按照基站的配置来上报,一般来讲,所有测量信息均需要被反馈。若所有邻区的所有干扰信息都被上报,则极大增加了反馈量,也增加了调度器处理的复杂度。除此之外,基站并不能同一时间获得所有邻区干扰信息,基站获取UE反馈的信息存在时间差(特别是配置多个CSI进程时),这导致基站的调度器等待所有反馈数据都到达后,才能执行调度算法。UE针对邻区的CSI反馈内容中必须包括CQI,而且UE对于邻区的CSI是否上报也没有过滤机制。In CS/CB, the size of the collaboration set depends on the network density, service requirements, etc., so in some cases, the number of cells included in the collaboration set may be large. When multi-cell cooperation, each cell may have several interference beams, and multiple cells have more interference beams, which results in a large number of UE measurement results. Among the many interferences measured by the UE, part of the interference is strong interference to the UE, part of the interference is weak interference, strong interference needs to be fed back to the base station to which the cell belongs, and weak interference does not require feedback. In the current protocol, the content reported by the UE is reported according to the configuration of the base station. Generally, all measurement information needs to be fed back. If all the interference information of all neighboring areas is reported, the feedback amount is greatly increased, and the complexity of the scheduler processing is also increased. In addition, the base station cannot obtain all neighboring interference information at the same time, and the base station obtains the time difference of the information fed back by the UE (especially when multiple CSI processes are configured), which causes the scheduler of the base station to wait for all feedback data to arrive. The scheduling algorithm can be executed. The CQI must be included in the CSI feedback content of the neighboring cell, and the UE does not have a filtering mechanism for whether the CSI of the neighboring cell is reported.
基于以上发现,本申请的发明人提出了一种CSI反馈的方法,可以减少信令资源的浪费,提高协作的有效性,尤其在CS/CB的场景下,可以降低开销,更高效地实现CSI测量和反馈。Based on the above findings, the inventor of the present application has proposed a CSI feedback method, which can reduce the waste of signaling resources and improve the effectiveness of collaboration, especially in the CS/CB scenario, which can reduce overhead and implement CSI more efficiently. Measurement and feedback.
本发明实施例对于同构网络或者异构网络的场景均适用。对于采用协作传输技术的传输点的类型,本发明实施例并不限定,比如,可以是各种类型的传输点,比如可以是宏基站与宏基站,微基站与微基站,或宏基站与微基站间的协作传输。The embodiments of the present invention are applicable to scenarios of a homogeneous network or a heterogeneous network. For the type of the transmission point that uses the coordinated transmission technology, the embodiment of the present invention is not limited. For example, it may be various types of transmission points, such as a macro base station and a macro base station, a micro base station and a micro base station, or a macro base station and a micro base station. Cooperative transmission between base stations.
在本发明实施例中,所涉及到的设备包括第一设备和第二设备。第二设备可以配置第一设备针对多个协作传输点进行CSI测量和反馈,第一设备可以根据第二设备发送的配置信息针对多个协作传输点进行CSI测量和反馈。其中,第一设备可以是终端,第二设备可以是网络设备,比如基站或其他类型传输点设备,当然不也限于上述两种设备,比如第二设备也可以是能够实现对其他终端进行配置操作的终端。In the embodiment of the present invention, the device involved includes a first device and a second device. The second device may configure the first device to perform CSI measurement and feedback for multiple coordinated transmission points, and the first device may perform CSI measurement and feedback for multiple coordinated transmission points according to the configuration information sent by the second device. The first device may be a terminal, and the second device may be a network device, such as a base station or other type of transmission point device, and is not limited to the above two devices. For example, the second device may also be configured to perform operations on other terminals. Terminal.
其中,基站可以是LTE系统或其演进系统中的演进型基站(Evolutional Node B,简称为eNB或e-NodeB)、宏基站、微基站(也称为“小基站”)、微微基站、接入站点(Access Point,简称为AP)或传输站点(Transmission Point,简称为TP)等,也可以是未来网络中的基站,如5G网络中的基站。The base station may be an evolved base station (Evolved Node B, referred to as an eNB or an e-NodeB), a macro base station, a micro base station (also referred to as a "small base station"), a pico base station, and an access in an LTE system or an evolved system thereof. An access point (AP) or a transmission point (TP) may also be a base station in a future network, such as a base station in a 5G network.
在本发明实施例中,终端也可称为用户设备(User Equipment,简称为UE),或者可称之为Terminal、移动台(Mobile Station,简称为MS)、移动终端(Mobile Terminal)等,该 终端可以经无线接入网(Radio Access Network,简称为RAN)与一个或多个核心网进行通信,例如,终端可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等,例如,终端还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语音和/或数据。本发明实施例中的终端还可以是D2D(Device to Device,设备与设备)终端或者M2M(Machine to Machine,机器与机器)终端。In the embodiment of the present invention, the terminal may also be referred to as a user equipment (User Equipment, UE for short), or may be called a terminal, a mobile station (Mobile Station, MS for short), a mobile terminal (Mobile Terminal), etc. The terminal may communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, or the like. For example, the terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network. The terminal in the embodiment of the present invention may also be a D2D (Device to Device) terminal or an M2M (Machine to Machine) terminal.
为描述方便,下述实施例将以用户设备作为第一设备,以网络设备作为第二设备为例进行说明。For convenience of description, the following embodiments will be described by taking a user equipment as a first device and a network device as a second device as an example.
本申请实施例适用于协同多点传输场景,比如可适用于CS/CB场景。The embodiments of the present application are applicable to a coordinated multi-point transmission scenario, such as a CS/CB scenario.
在本申请实施例提出的CSI反馈方法,包括:The CSI feedback method proposed in the embodiment of the present application includes:
S101.用户设备接收来自网络设备的M组CSI配置信息,其中,M为大于或等于1的整数;S101. The user equipment receives M group CSI configuration information from the network device, where M is an integer greater than or equal to 1;
可选的,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息,M为大于或等于2的整数;Optionally, the M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment, where M is an integer greater than or equal to 2;
相应的,网络设备向所述用户设备发送M组CSI配置信息。Correspondingly, the network device sends the M group CSI configuration information to the user equipment.
其中,每组CSI配置信息包括一个小区标识,一个CSI进程ID,一个一套非零功率CSI参考信号资源的标识,或,一个一套CSI-IM(干扰测量)资源的标识中的至少一个,其中,所述小区为与所述用户设备相关联的小区,相关联的小区包括用户设备的服务小区,或,与用户设备的服务小区协作的小区;所述CSI进程对应于一套非零功率参考信号资源的标识,或者,所述CSI进程对应于一套CSI-IM资源的标识。The CSI configuration information includes a cell identifier, a CSI process ID, an identifier of a set of non-zero-power CSI reference signal resources, or at least one of a set of CSI-IM (interference measurement) resource identifiers. The cell is a cell associated with the user equipment, and the associated cell includes a serving cell of the user equipment, or a cell that cooperates with a serving cell of the user equipment; the CSI process corresponds to a set of non-zero power The identifier of the reference signal resource, or the CSI process corresponds to an identifier of a set of CSI-IM resources.
可选的,以上网络设备为所述用户设备的服务小区所属的网络设备。Optionally, the foregoing network device is a network device to which the serving cell of the user equipment belongs.
可选的,M组CSI配置信息可以对应于M个小区(也可以表现为波束,故也可称为波束),该M个小区可以包括所述UE的服务小区和参与与该服务小区CS/CB的其他M-1个小区(在本申请中称为邻区)。可以理解的,该M个小区也可以包括参与与该UE的服务小区CS/CB的M个小区(也称为邻区),或者,该M个小区也可以包括进行各种类型的CoMP传输的小区(也称为邻区),比如可以包括该UE的服务小区,参与与该UE的服务小区CS/CB的一个或多个小区(也称为邻区),参与与该UE的服务小区JT的一个或多个小区,或,参与动态点选择/关闭的一个或多个小区中的一种或多种的组合。在本申请中,参与CoMP传输的小区所属的网络设备也可以称为传输点(TP,transmission point)。该传输点可以是一个基站,也可以是一个基站的一个射频单元,在此不予限定。Optionally, the M group CSI configuration information may correspond to M cells (which may also be represented as beams, and may also be referred to as beams), and the M cells may include the serving cell of the UE and participate in the serving cell CS/ The other M-1 cells of the CB (referred to as neighbors in this application). It can be understood that the M cells may also include M cells (also referred to as neighbor cells) participating in the serving cell CS/CB of the UE, or the M cells may also include performing various types of CoMP transmission. A cell (also referred to as a neighboring cell), for example, may include a serving cell of the UE, one or more cells (also referred to as neighboring cells) participating in the serving cell CS/CB of the UE, and participate in a serving cell JT with the UE. One or more cells, or a combination of one or more of one or more cells participating in dynamic point selection/shutdown. In the present application, the network device to which the cell participating in the CoMP transmission belongs may also be referred to as a transmission point (TP). The transmission point may be a base station or a radio unit of a base station, which is not limited herein.
在本申请的一个可选的场景中,M组CSI配置信息对应的小区仅包括所述UE的服务 小区和参与与该服务小区CS/CB的小区(邻区),或是,仅包括参与与该UE的服务小区CS/CB的小区(邻区)。In an optional scenario of the present application, the cell corresponding to the M group CSI configuration information includes only the service of the UE. The cell and the cell (neighbor) participating in the CS/CB of the serving cell, or only the cell (neighbor) participating in the serving cell CS/CB with the UE.
在本申请的另一个可选的场景中,M组CSI配置信息对应的小区除了包括UE的服务小区,或,参与与该服务小区CS/CB的小区(邻区)之外,还包括其他类型的CoMP的小区。对于每种类型的小区,CSI反馈的要求可以相同也可以不同(比如,对于JT的小区,CQI必须上报,对于CS/CB的小区,CQI可以不上报),对应这些小区的CSI配置信息所对应的CSI反馈的要求都可以通过协议预定义或网络设备进行配置。In another optional scenario of the present application, the cell corresponding to the M group CSI configuration information includes other types except the serving cell of the UE, or the cell (neighborhood) participating in the serving cell CS/CB. The community of CoMP. For each type of cell, the CSI feedback requirements may be the same or different (for example, for a JT cell, the CQI must be reported, for a CS/CB cell, the CQI may not be reported), corresponding to the CSI configuration information of the cells. The requirements for CSI feedback can be configured through protocol pre-defined or network devices.
对于参与CS/CB的小区,其对服务小区或参与JT的小区(通常包括信道质量最好的小区)的信道质量的影响可以称为干扰。For a cell participating in a CS/CB, its impact on the channel quality of the serving cell or the cell participating in the JT (typically including the cell with the best channel quality) may be referred to as interference.
S102.所述用户设备根据所述CSI配置信息反馈对应于所述M组CSI配置信息的M组CSI中的N组CSI,其中,所述N为大于或等于0且不大于M的整数;S102. The user equipment feeds back N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information according to the CSI configuration information, where the N is an integer greater than or equal to 0 and not greater than M;
进一步的,N大于或等于1,所述N组CSI至少包括对应于所述服务小区的CSI配置信息的CSI;或者,所述N组CSI至少包括信道质量最好的一组CSI。Further, N is greater than or equal to 1, and the N sets of CSIs include at least CSI corresponding to CSI configuration information of the serving cell; or, the N sets of CSIs include at least one set of CSIs with the best channel quality.
相应的,所述网络设备接收来自所述用户设备对应于所述M组CSI配置信息的M组CSI中的N组CSI。Correspondingly, the network device receives N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information from the user equipment.
进一步的,还可以包括:Further, it may further include:
S103.所述用户设备反馈指示信息,所述指示信息用于指示所述用户设备所反馈的N组CSI所对应的N组CSI配置信息。S103. The user equipment feedback indication information, where the indication information is used to indicate N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment.
相应的,所述网络设备接收来自所述用户设备的指示信息。Correspondingly, the network device receives indication information from the user equipment.
可选的,指示信息可以为bitmap的形式,也可以为每组CSI所对应的CSI配置信息的标识信息。Optionally, the indication information may be in the form of a bitmap, or may be identifier information of CSI configuration information corresponding to each group of CSIs.
具体的,指示信息为bitmap的形式时,Specifically, when the indication information is in the form of a bitmap,
所述指示信息可以包括M组比特,每组比特包括至少1个比特(bit),且每组比特指示所述M组CSI配置信息中的一组CSI配置信息所对应的CSI是否被所述用户设备反馈。举例而言,如果M的值为5,则指示信息包括5组比特,每组比特对应一组CSI配置信息所对应的CSI,当某组CSI配置信息对应的CSI需要反馈时,该CSI对应的bit可以被设为一个预设值,如1,当某组CSI配置信息对应的CSI不需要反馈时,该CSI对应的bit可以被设为另一个预设值,如0。可以理解的是,N组CSI的反馈顺序可以跟对应的M组比特所对应的M组CSI配置信息的顺序相关,比如,一致。这样,网络设备就可以根据反馈顺序,获知所反馈的N组CSI所对应的N组CSI配置信息是哪些了。 The indication information may include M groups of bits, each group of bits including at least 1 bit, and each group of bits indicates whether a CSI corresponding to a group of CSI configuration information in the M group of CSI configuration information is used by the user Device feedback. For example, if the value of M is 5, the indication information includes 5 groups of bits, and each group of bits corresponds to a CSI corresponding to a group of CSI configuration information. When the CSI corresponding to a certain group of CSI configuration information needs feedback, the CSI corresponds to The bit can be set to a preset value. For example, when the CSI corresponding to a certain group of CSI configuration information does not require feedback, the bit corresponding to the CSI can be set to another preset value, such as 0. It can be understood that the feedback order of the N sets of CSIs may be related to the order of the M sets of CSI configuration information corresponding to the corresponding M sets of bits, for example, consistent. In this way, the network device can learn, according to the feedback sequence, which N sets of CSI configuration information corresponding to the fed N sets of CSIs are.
可选的,M组比特可以为连续传输的,也可以为M组比特中的每组比特分别与其所指示的一组CSI一起传输。Optionally, the M group bits may be continuously transmitted, or each group of the M groups of bits may be transmitted together with a group of CSIs indicated by the group.
可选的,N组CSI在反馈时,UE可以仅给该N组CSI分配资源,该N组CSI按照顺序承载在UE分配的资源;或者,UE可以给M组CSI配置信息对应的M组CSI预留资源,实际反馈的N组CSI按照顺序承载在M组CSI预留资源中相应的N组资源中。Optionally, when the N sets of CSIs are fed back, the UE may allocate resources only to the N sets of CSIs, where the N sets of CSIs are sequentially carried in the resources allocated by the UE; or the UE may give the M sets of CSIs corresponding to the M sets of CSI configuration information. The resources are reserved, and the N sets of CSIs actually fed back are sequentially carried in the corresponding N groups of resources in the M group CSI reserved resources.
可以理解的是,所述指示信息可以包括M-1组比特。对应于UE的服务小区的CSI配置信息的CSI可以默认为需要反馈的,且该组CSI的反馈可以通过其他方式由网络设备确定为对应于服务小区的CSI配置信息,则该组CSI可以无需在UE的反馈中进行指示。具体的M-1组比特进行指示的方式可以参考上述M组比特进行指示的方式。可选的,M-1组比特可以为连续传输的,也可以为M-1组比特中的每组比特分别与其所指示的一组CSI一起传输。It can be understood that the indication information may include M-1 group bits. The CSI corresponding to the CSI configuration information of the serving cell of the UE may be required to be fed back by default, and the feedback of the group of CSI may be determined by the network device to be corresponding to the CSI configuration information of the serving cell by other means, the group of CSI may not need to be in the CSI configuration information. An indication is made in the feedback of the UE. The manner in which the specific M-1 group bits are indicated may be referred to the manner in which the above M group bits are indicated. Optionally, the M-1 group bits may be continuously transmitted, or each group of the M-1 group bits may be transmitted together with a group of CSIs indicated by the group.
具体的,前述指示信息为每组CSI所对应的CSI配置信息的标识信息时,该CSI配置信息的标识信息可以为小区标识信息,CSI进程标识信息或是NZP CSI-RS资源的标识信息,或者CSI-IM资源的标识信息。具体可参考前述每组CSI配置信息所包括的内容,在此不予赘述。可选的,前述CSI配置信息的标识信息还可以为每组CSI配置信息的索引,即每组CSI配置信息在所配置的M组CSI配置信息中的编号。举例而言,网络设备为UE配置了M个配置信息,则该索引所占的bit数可以为log2M,每组CSI配置信息的索引可以依次为0至M-1的M个正整数中的一个,该顺序可以为网络设备和UE双方所预知的。可以理解的是,该索引所占的bit数的数量可以通过物理层信令或者高层信令通知UE。或者索引bit数为协议预定义的。Specifically, when the foregoing indication information is the identifier information of the CSI configuration information corresponding to each group of the CSI, the identifier information of the CSI configuration information may be the cell identifier information, the CSI process identifier information, or the identifier information of the NZP CSI-RS resource, or Identification information of CSI-IM resources. For details, refer to the content included in each group of CSI configuration information, and details are not described herein. Optionally, the identifier information of the foregoing CSI configuration information may also be an index of each group of CSI configuration information, that is, a number of each group of CSI configuration information in the configured M group CSI configuration information. For example, if the network device configures M configuration information for the UE, the number of bits occupied by the index may be log 2 M, and the index of each group of CSI configuration information may be M positive integers of 0 to M-1. One, the order can be foreseen by both the network device and the UE. It can be understood that the number of bits occupied by the index can be notified to the UE through physical layer signaling or higher layer signaling. Or the number of index bits is predefined by the protocol.
在一种可选的实施方式中,每组CSI所对应的CSI配置信息的标识信息可以与其指示的CSI一起传输,该CSI可以包括RI,PMI或者CQI。这样可以使得CSI的反馈更灵活。In an optional implementation manner, the identifier information of the CSI configuration information corresponding to each group of CSIs may be transmitted together with the indicated CSI, and the CSI may include an RI, a PMI, or a CQI. This can make CSI feedback more flexible.
可选的,所述标识信息可以与其所指示的CSI中的RI,PMI或者CQI一起进行编码调制。或者,所述标识信息可以独立于其所指示的CSI中的RI,PMI或者CQI进行单独的编码调制。具体的,每组CSI所对应的CSI配置信息的标识信息如何与CSI一起发送(即指示信息与CSI一起发送的格式)可以为系统预定义的。Optionally, the identifier information may be coded and modulated together with the RI, PMI or CQI in the CSI indicated. Alternatively, the identification information may be separately coded and modulated independently of the RI, PMI or CQI in the CSI indicated. Specifically, how the identification information of the CSI configuration information corresponding to each group of CSIs is sent together with the CSI (that is, the format in which the indication information is sent together with the CSI) may be predefined by the system.
比如,每组CSI所对应的CSI配置信息的标识信息可以与RI一起传输,二者的传输顺序可以是系统预定义的,比如标识信息在RI前,或者,标识信息在RI后;或者,For example, the identification information of the CSI configuration information corresponding to each group of CSIs may be transmitted together with the RI, and the transmission order of the two may be predefined by the system, for example, the identification information is before the RI, or the identification information is after the RI; or
比如,每组CSI所对应的CSI配置信息的标识信息可以与子带或者全带PMI和/或CQI一起发送。二者的传输顺序可以是系统预定义的,比如标识信息放在PMI和/或CQI前或 者标识信息放在PMI和/或CQI后,或者,标识信息放在指定的编码位置;或者For example, the identification information of the CSI configuration information corresponding to each group of CSIs may be sent together with the sub-band or the full-band PMI and/or CQI. The transmission order of the two may be predefined by the system, such as the identification information placed before the PMI and / or CQI or The identification information is placed after the PMI and/or CQI, or the identification information is placed at the specified coding location; or
比如,每组CSI所对应的CSI配置信息的标识信息可以与CRI(CSI-RS resource ID,CSI-RS资源标识)一起发送。二者的传输顺序可以是系统预定义的,比如标识信息放在CRI前或者标识信息放在CRI后,或者标识信息放在指定编码位置。其中,在针对CSI测量上报的类型为class B(类型B,指beamformed CSI-RS,波束赋型的CSI-RS)且配置了K个CSI-RS资源(K>1)用于CSI测量的情况下,UE需要在反馈的CSI中包括CRI。示例的,可以通过高层信令中的eMIMO-Type信元通知UE其CSI测量上报的类型。For example, the identification information of the CSI configuration information corresponding to each group of CSIs may be sent together with the CRI (CSI-RS resource ID). The transmission order of the two may be predefined by the system, such as the identification information is placed before the CRI or the identification information is placed after the CRI, or the identification information is placed at the specified coding location. Wherein, the type reported for the CSI measurement is class B (type B, which refers to beamformed CSI-RS, beam-formed CSI-RS) and K CSI-RS resources (K>1) are configured for CSI measurement. Next, the UE needs to include the CRI in the feedback CSI. For example, the type of CSI measurement report of the UE may be notified by the eMIMO-Type cell in the high layer signaling.
可选的,该指示信息在PUSCH中发送,或者,该指示信息在PUCCH中发送。Optionally, the indication information is sent in a PUSCH, or the indication information is sent in a PUCCH.
指示信息在PUCCH发送的情况,可以通过PUCCH的上报类型,比如类型11-16,指示该指示信息与CSI一起发送的格式。In the case that the indication information is sent in the PUCCH, the reporting type of the PUCCH, such as the type 11-16, may be used to indicate the format in which the indication information is sent together with the CSI.
其中,among them,
类型11指示支持CRI和指示信息一起传输;Type 11 indicates that CRI and indication information are supported for transmission together;
类型12指示支持RI和指示信息一起传输;Type 12 indicates that the support RI and the indication information are transmitted together;
类型13指示支持CRI,RI和指示信息一起传输;Type 13 indicates support for CRI, and RI and indication information are transmitted together;
类型14指示支持宽带CQI和指示信息一起传输;Type 14 indicates support for wideband CQI and indication information to be transmitted together;
类型15指示支持宽带CQI,PMI和指示信息一起传输;Type 15 indicates support for wideband CQI, and PMI and indication information are transmitted together;
类型16指示支持子带CQI,第二PMI和指示信息一起传输。Type 16 indicates that the sub-band CQI is supported, and the second PMI is transmitted together with the indication information.
具体的,UE确定所需反馈的N组CSI的方式可以包括以下方式中的一种或多种的结合:Specifically, the manner in which the UE determines the N sets of CSIs that are required to be fed back may include a combination of one or more of the following manners:
方式1.根据所述M组CSI配置信息获得对应的M组CSI,根据M组CSI中每组CSI与相应的门限值的比较,确定并反馈所述M组CSI中的N组CSI。 Method 1. Obtain a corresponding M group CSI according to the M group CSI configuration information, and determine and feed back N sets of CSI in the M group CSI according to comparison between each group CSI in the M group CSI and a corresponding threshold.
具体的,可以通过将CSI中所包括的CQI与相应的第一门限值进行比较。Specifically, the CQI included in the CSI can be compared with the corresponding first threshold.
可选的,CQI大于第一门限值的,进行相应的CSI的反馈。Optionally, if the CQI is greater than the first threshold, the corresponding CSI feedback is performed.
方式2.Mode 2.
(1)对应于UE的服务小区的CSI配置信息的CSI必须进行反馈;或者,对应于M组CSI配置信息的M组CSI中指示信道质量最好的一组CSI必须进行反馈。通常,信道质量最好是指CQI值最大。(1) The CSI corresponding to the CSI configuration information of the serving cell of the UE must be fed back; or, a group of CSIs indicating the best channel quality among the M sets of CSI corresponding to the M group of CSI configuration information must be fed back. In general, channel quality preferably means that the CQI value is the largest.
(2)对应于非服务小区的CSI配置信息的CSI,或是,对应于指示的信道质量不是最好的其他组CSI,反馈原则可以为:(2) The CSI corresponding to the CSI configuration information of the non-serving cell, or the other group CSI corresponding to the indicated channel quality is not the best, the feedback principle may be:
将服务小区的CSI配置信息的CSI或是对应于M组CSI配置信息的M组CSI中 指示信道质量最好的一组CSI作为基准CSI,该基准CSI对应的CSI配置信息称为基准CSI配置信息,CSI of the CSI configuration information of the serving cell or M group CSI corresponding to the M group CSI configuration information A set of CSI indicating the best channel quality is used as the reference CSI, and the CSI configuration information corresponding to the reference CSI is referred to as reference CSI configuration information.
将其他组CSI配置信息对应的CSI中的CQI逐一与所述基准CSI中的CQI进行比较,当两者的差值小于或等于第二门限值时,将该组CSI配置信息对应的CSI进行反馈;当两者的差值小于或等于第二门限值时,可以说明说明非基准CSI配置信息对应的信道质量与基准CSI配置信息对应的信道质量相当,如果非基准CSI配置信息对应的是CS/CB的小区,则该小区对基准CSI配置信息所对应的信道的干扰较大,如果非基准CSI配置信息对应的是JT的小区,则该小区可以优先被调度去参与JT,如果非基准CSI配置信息对应的是DPS的小区,则该小区可以优先被调度为UE传输数据。The CQIs in the CSIs corresponding to the CSI configuration information of the other group are compared with the CQIs in the reference CSI, and when the difference between the two is less than or equal to the second threshold, the CSI corresponding to the CSI configuration information is performed. Feedback; when the difference between the two is less than or equal to the second threshold, it may be stated that the channel quality corresponding to the non-reference CSI configuration information is equivalent to the channel quality corresponding to the reference CSI configuration information, if the non-reference CSI configuration information corresponds to The cell of the CS/CB has a large interference to the channel corresponding to the reference CSI configuration information. If the non-reference CSI configuration information corresponds to the JT cell, the cell can be preferentially scheduled to participate in the JT, if not the reference. The CSI configuration information corresponds to the cell of the DPS, and the cell may be preferentially scheduled to transmit data by the UE.
或者,or,
UE在将其他组CSI配置信息逐一叠加在所述基准CSI配置信息上(即两组CSI配置信息同时用于UE对信道的测量)时对信道信息进行逐一测量获得相应的CSI中的CQI,将这些测量所获得的多个CQI与基准CSI中的CQI进行比较,当两者的差值大于或等于第三门限值时,将相应的CSI配置信息对应的CSI进行反馈。当两者的差值大于或等于第三门限值时,可以说明非基准CSI配置信息对应的信道对基准CSI配置信息对应的信道的影响较大,如果非基准CSI配置信息对应的是CS/CB的小区,则该小区对基准CSI配置信息所对应的信道的干扰较大,如果非基准CSI配置信息对应的是JT的小区,则该小区可以优先被调度去参与JT,如果非基准CSI配置信息对应的是DPS的小区,则该小区可以优先被调度为UE传输数据。When the UE superimposes the other group CSI configuration information on the reference CSI configuration information one by one (that is, the two sets of CSI configuration information are used for the UE to measure the channel at the same time), the channel information is measured one by one to obtain the CQI in the corresponding CSI, and The plurality of CQIs obtained by the measurements are compared with the CQIs in the reference CSI. When the difference between the two is greater than or equal to the third threshold, the CSI corresponding to the corresponding CSI configuration information is fed back. When the difference between the two is greater than or equal to the third threshold, it may be stated that the channel corresponding to the non-reference CSI configuration information has a greater impact on the channel corresponding to the reference CSI configuration information, and if the non-reference CSI configuration information corresponds to the CS/ In the cell of the CB, the cell has a large interference to the channel corresponding to the reference CSI configuration information. If the non-reference CSI configuration information corresponds to the JT cell, the cell may be preferentially scheduled to participate in the JT if the non-reference CSI configuration The information corresponds to the cell of the DPS, and the cell can be preferentially scheduled to transmit data by the UE.
可以理解的是,以上方式1和/或方式2中的所提到的第一门限值、第二门限值和第三门限值中的一个或多个,可以为协议预定的(即无需另行配置的),也可以通过网络设备进行配置,比如通过物理层信令或高层信令进行配置。这种配置可以通过S101中的CSI配置信息进行,也可以通过其他方式进行,在此不予限定。It can be understood that one or more of the mentioned first threshold value, second threshold value and third threshold value in the above manner 1 and/or mode 2 may be predetermined by the protocol (ie It can be configured through network devices, such as physical layer signaling or higher layer signaling. This configuration may be performed by using the CSI configuration information in S101, or may be performed in other manners, and is not limited herein.
可选的,当UE在测量邻区的波束对于本小区的干扰影响的时候,可以同时测量出干扰波束对应的功率值门限,并且上报该功率值门限。其中,功率值门限是指当波束的功率值大于该功率值门限时,该波束在各种协同场景中,如CS/CB,JT或DSP时,该波束需被考虑。Optionally, when the UE measures the interference of the neighboring area beam to the local cell, the power value threshold corresponding to the interference beam may be measured at the same time, and the power value threshold is reported. The power threshold is when the power value of the beam is greater than the power threshold, and the beam needs to be considered in various coordinated scenarios, such as CS/CB, JT, or DSP.
其中,该功率值门限的确定方法可以有以下三种方案: The method for determining the threshold of the power value may have the following three schemes:
方案1:针对上述方式一,即根据所述M组CSI配置信息获得对应的M组CSI,根据M组CSI中每组CSI与相应的第一门限值的比较,确定并反馈所述M组CSI中的N组CSI。For the first mode, the corresponding M group CSI is obtained according to the M group CSI configuration information, and the M group is determined and fed back according to the comparison between each group CSI in the M group CSI and the corresponding first threshold value. N sets of CSI in CSI.
根据所述门限值,假设针对该组CSI配置信息测量的CQI值为CQI1,则会存在一功率值门限PA,使得该组CSI配置信息对应的功率P1>PA时,在功率P1下的CQI1大于第一门限值;该组CSI配置信息对应的功率P2<PA(也可以为小于或等于)时,在功率P2下的CQI1小于第一门限值。如果该组CSI配置信息对应的是CS/CB的小区(邻区的波束),表明该邻区的波束的功率大于该功率值门限PA时该邻区的波束对该UE的干扰较大,小于(或等于)该功率值门限PA时邻区的波束对该UE的干扰可接受。如果该组CSI配置信息对应的是JT的小区(邻区的波束),则该邻区的波束的功率大于该功率值门限PA时,该小区可以优先被调度去参与JT,且其功率配置为大于功率值门限PA,如果该组CSI配置信息对应的是DPS的小区(邻区的波束),则该邻区的波束的功率大于该功率值门限PA时,则该小区可以优先被调度为UE传输数据,且其功率配置为大于功率值门限PA。According to the threshold, if the CQI value measured for the group of CSI configuration information is CQI1, there is a power value threshold PA, so that when the power corresponding to the CSI configuration information is P1>PA, the CQI1 under the power P1 If the power corresponding to the CSI configuration information is P2 < PA (which may be less than or equal to), the CQI1 under the power P2 is smaller than the first threshold. If the CSI configuration information of the group corresponds to the cell of the CS/CB (the beam of the neighboring cell), indicating that the power of the beam of the neighboring cell is greater than the power threshold PA, the interference of the beam of the neighboring cell to the UE is larger, smaller than (or equal to) the interference of the beam of the neighboring cell to the UE when the power value threshold PA is acceptable. If the group of CSI configuration information corresponds to the cell of the JT (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PA, the cell may be preferentially scheduled to participate in the JT, and the power configuration is If the CSI configuration information is greater than the power of the DPS (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PA, the cell may be preferentially scheduled as the UE. The data is transmitted and its power is configured to be greater than the power value threshold PA.
其中,功率值门限PA的表现形式可以为具体数值,也可以为一比值。相应的,在比较时,该组CSI配置信息对应的功率P1或P2的表现形式与功率值门限的表现形式相同。The expression of the power value threshold PA may be a specific value or a ratio. Correspondingly, when comparing, the representation of the power P1 or P2 corresponding to the CSI configuration information is the same as the representation of the power value threshold.
举例而言,上述功率值门限PA可以满足:For example, the above power value threshold PA can satisfy:
Figure PCTCN2017097146-appb-000011
Figure PCTCN2017097146-appb-000011
Figure PCTCN2017097146-appb-000012
Figure PCTCN2017097146-appb-000012
其中,H为UE基于该组CSI配置信息测量的信道矩阵,W为UE基于该组CSI配置信息选择的预编码矩阵,I为干扰值,N为噪声值,P1和P2为该组CSI配置信息所对应的功率值,threshold1为上述第一门限值,| |2为取模的平方。其中,|HW|2为考虑网络设备配置的数据与导频的功率之后计算得到的值,作为另一个可选的示例,上述公式中的|HW|2可替换为Px|HW|2其中Px为网络设备配置的数据与导频的功率值。H is a channel matrix measured by the UE based on the set of CSI configuration information, where W is a precoding matrix selected by the UE based on the set of CSI configuration information, where I is an interference value, N is a noise value, and P1 and P2 are the CSI configuration information of the group. The corresponding power value, threshold1 is the first threshold value, and | | 2 is the square of the modulo. Where |HW| 2 is a value calculated after considering the data of the network device configuration and the power of the pilot. As another optional example, |HW| 2 in the above formula may be replaced by P x |HW| 2 P x is the power value of the data and pilot configured for the network device.
方案2:针对上述方式二中的一种反馈原则,即:将服务小区的CSI配置信息的CSI或是对应于M组CSI配置信息的M组CSI中指示信道质量最好的一组CSI作为基准CSI, 该基准CSI对应的CSI配置信息称为基准CSI配置信息,将其他组CSI配置信息(也称非基准CSI配置信息)对应的CSI中的CQI逐一与所述基准CSI中的CQI进行比较,当两者的差值小于或等于第二门限值时,将该组CSI配置信息对应的CSI进行反馈;Solution 2: A feedback principle in the foregoing mode 2, that is, the CSI of the CSI configuration information of the serving cell or the CSI of the M group CSI corresponding to the M group CSI configuration information indicating the best channel quality is used as a reference. CSI, The CSI configuration information corresponding to the reference CSI is referred to as reference CSI configuration information, and the CQI in the CSI corresponding to the other group of CSI configuration information (also referred to as non-reference CSI configuration information) is compared with the CQI in the reference CSI one by one, when two When the difference between the two is less than or equal to the second threshold, the CSI corresponding to the CSI configuration information is fed back;
针对一组非基准CSI配置信息,测量的CQI值为CQI1,会存在一功率值门限PB,使得该组非基准CSI配置信息对应的功率P1>PB时,在功率P1下的CQI1与所述基准CSI配置信息对应的CSI所包括的CQI进行比较时两者的差值小于或等于第二门限值;该组非基准CSI配置信息对应的功率P2<PB(也可以为小于或等于)时,在功率P2下的CQI1与所述基准CSI配置信息对应的CSI所包括的CQI进行比较时两者的差值大于第二门限值。如果该组非基准CSI配置信息对应的是CS/CB的小区(邻区的波束),表明该邻区的波束的功率大于该功率值门限PB时该邻区的波束对该UE的干扰较大,小于(或等于)该功率值门限PB时邻区的波束对该UE的干扰可接受。如果该组非基准CSI配置信息对应的是JT的小区(邻区的波束),则该邻区的波束的功率大于该功率值门限PB时,该小区可以优先被调度去参与JT,且其功率配置为大于功率值门限PB,如果该组非基准CSI配置信息对应的是DPS的小区(邻区的波束),则该邻区的波束的功率大于该功率值门限PB时,则该小区可以优先被调度为UE传输数据,且其功率配置为大于功率值门限PB。For a set of non-reference CSI configuration information, the measured CQI value is CQI1, and there is a power value threshold PB, such that when the power P1>PB corresponding to the non-reference CSI configuration information, the CQI1 under the power P1 and the reference When the CQI included in the CSI corresponding to the CSI configuration information is compared, the difference between the two is less than or equal to the second threshold; when the power corresponding to the non-reference CSI configuration information is P2 < PB (which may be less than or equal to), When the CQI1 at the power P2 is compared with the CQI included in the CSI corresponding to the reference CSI configuration information, the difference between the two is greater than the second threshold. If the non-reference CSI configuration information of the group corresponds to the cell of the CS/CB (the beam of the neighboring cell), indicating that the power of the beam of the neighboring cell is greater than the power threshold PB, the interference of the beam of the neighboring cell to the UE is larger. When the power value threshold PB is less than (or equal to) the interference of the beam of the neighboring cell to the UE is acceptable. If the non-reference CSI configuration information of the group corresponds to the cell of the JT (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PB, the cell may be preferentially scheduled to participate in the JT, and its power Configured to be greater than the power threshold PB. If the group of non-reference CSI configuration information corresponds to the cell of the DPS (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PB, the cell may be prioritized. It is scheduled to transmit data to the UE, and its power is configured to be greater than the power value threshold PB.
其中,功率值门限PB的表现形式可以为具体数值,也可以为一比值。相应的,在比较时,该组非基准CSI配置信息对应的功率P1或P2的表现形式与功率值门限的表现形式相同。The expression of the power value threshold PB may be a specific value or a ratio. Correspondingly, when comparing, the representation of the power P1 or P2 corresponding to the non-reference CSI configuration information is the same as the representation of the power value threshold.
举例而言,上述功率值门限PB可以满足:For example, the above power value threshold PB can satisfy:
Figure PCTCN2017097146-appb-000013
Figure PCTCN2017097146-appb-000013
Figure PCTCN2017097146-appb-000014
Figure PCTCN2017097146-appb-000014
Figure PCTCN2017097146-appb-000015
Figure PCTCN2017097146-appb-000015
其中,基准CQI值为基准CSI配置信息对应的CSI所包括的CQI的值,H为UE基于该组CSI配置信息测量的信道矩阵,W为UE基于该组CSI配置信息选择的预编码矩阵,I为干扰值,N为噪声值,P1和P2为该组CSI配置信息所对应的功率值,threshold2为上述第二门限值,| |2为取模的平方,H’为UE针对基准CSI 配置信息测量的信道矩阵,W’为UE针对基准CSI配置信息选择的预编码矩阵,I’为针对基准CSI配置信息测量的干扰值,N’为针对基准CSI配置信息测量的噪声值。|HW|2为考虑网络设备配置的数据与导频的功率之后计算得到的值,作为另一个可选的示例,上述公式中的|HW|2可替换为Px|HW|2其中Px为网络设备配置的数据与导频的功率值。The reference CQI is a value of a CQI included in the CSI corresponding to the reference CSI configuration information, H is a channel matrix measured by the UE based on the set of CSI configuration information, and W is a precoding matrix selected by the UE based on the set of CSI configuration information, where For the interference value, N is the noise value, P1 and P2 are the power values corresponding to the CSI configuration information, threshold2 is the second threshold, || 2 is the square of the modulo, and H' is the UE configured for the reference CSI. The channel matrix of the information measurement, W' is a precoding matrix selected by the UE for the reference CSI configuration information, I' is the interference value measured for the reference CSI configuration information, and N' is the noise value measured for the reference CSI configuration information. |HW| 2 is a value calculated after considering the data of the network device configuration and the power of the pilot. As another optional example, |HW| 2 in the above formula may be replaced by P x |HW| 2 where P x The data and pilot power values configured for the network device.
方案3:针对上述方式二中的另外一种反馈原则,即:UE在将其他组CSI配置信息逐一叠加在所述基准CSI配置信息上(即两组CSI配置信息同时用于UE对信道的测量)时对信道信息进行逐一测量获得相应的CSI中的CQI,将这些测量所获得的多个CQI与基准CSI中的CQI进行比较,当两者的差值大于或等于第三门限值时,将相应的CSI配置信息对应的CSI进行反馈。Scenario 3: Another feedback principle in the foregoing mode 2, that is, the UE superimposes other group CSI configuration information on the reference CSI configuration information one by one (that is, two sets of CSI configuration information are simultaneously used for UE to measure channel). The channel information is measured one by one to obtain the CQI in the corresponding CSI, and the plurality of CQIs obtained by the measurements are compared with the CQI in the reference CSI, when the difference between the two is greater than or equal to the third threshold, The CSI corresponding to the corresponding CSI configuration information is fed back.
针对一组非基准CSI配置信息叠加在所述基准CSI配置信息上(即两组CSI配置信息同时用于UE对信道的测量)时对信道信息测量获得相应的CSI中的CQI值为CQI1。会存在一功率值门限PC,使得该组非基准CSI配置信息对应的功率P1>PC时,在功率P1下的CQI1与所述基准CSI中的CQI进行比较时两者的差值大于第三门限值;该组非基准CSI配置信息对应的功率P2<PC(也可以为小于或等于)时,在功率P2下的CQI1与所述基准CSI中的CQI进行比较时两者的差值小于或者等于第三门限值。如果该组非基准CSI配置信息对应的是CS/CB的小区(邻区的波束),表明该邻区的波束的功率大于该功率值门限PC时该邻区的波束对该UE的干扰较大,小于(或等于)该功率值门限PC时邻区的波束对该UE的干扰可接受。如果该组非基准CSI配置信息对应的是JT的小区(邻区的波束),则该邻区的波束的功率大于该功率值门限PC时,该小区可以优先被调度去参与JT,且其功率配置为大于功率值门限PC,如果该组非基准CSI配置信息对应的是DPS的小区(邻区的波束),则该邻区的波束的功率大于该功率值门限PC时,则该小区可以优先被调度为UE传输数据,且其功率配置为大于功率值门限PC。When a set of non-reference CSI configuration information is superimposed on the reference CSI configuration information (that is, two sets of CSI configuration information are simultaneously used for measurement of a channel by the UE), the CQI value in the corresponding CSI is obtained for the channel information measurement to be CQI1. There is a power value threshold PC, such that when the power P1>PC corresponding to the non-reference CSI configuration information is compared, the difference between the CQI1 under the power P1 and the CQI in the reference CSI is greater than the third gate. Limit value; when the power P2<PC (which may be less than or equal to) corresponding to the non-reference CSI configuration information, the difference between the CQI1 under the power P2 and the CQI in the reference CSI is less than or Equal to the third threshold. If the non-reference CSI configuration information of the group corresponds to the cell of the CS/CB (the beam of the neighboring cell), indicating that the power of the beam of the neighboring cell is greater than the power threshold PC, the interference of the beam of the neighboring cell to the UE is larger. When less than (or equal to) the power value threshold PC, the interference of the beam of the neighboring cell to the UE is acceptable. If the non-reference CSI configuration information corresponds to the JT cell (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PC, the cell may be preferentially scheduled to participate in the JT, and its power Configured to be greater than the power threshold PC. If the group of non-reference CSI configuration information corresponds to the cell of the DPS (the beam of the neighboring cell), if the power of the beam of the neighboring cell is greater than the power threshold PC, the cell can take precedence. It is scheduled to transmit data to the UE, and its power is configured to be greater than the power value threshold PC.
其中,功率值门限PC的表现形式可以为具体数值,也可以为一比值。相应的,在比较时,该组非基准CSI配置信息对应的功率P1或P2的表现形式与功率值门限的表现形式相同。The power value threshold PC can be expressed in a specific value or a ratio. Correspondingly, when comparing, the representation of the power P1 or P2 corresponding to the non-reference CSI configuration information is the same as the representation of the power value threshold.
举例而言,上述功率值门限PC满足: For example, the above power value threshold PC satisfies:
Figure PCTCN2017097146-appb-000016
Figure PCTCN2017097146-appb-000016
Figure PCTCN2017097146-appb-000017
Figure PCTCN2017097146-appb-000017
Figure PCTCN2017097146-appb-000018
Figure PCTCN2017097146-appb-000018
其中,基准CQI值为基准CSI配置信息对应的CSI所包括的CQI的值,P1和P2为该组CSI配置信息所对应的功率值,threshold3为上述第三门限值,| |2为取模的平方,H0为UE基于所述基准CSI配置信息测量的信道的矩阵,W0为UE基于所述基准CSI配置信息测量选择的预编码矩阵,H1为UE基于所述待测量上报的该组CSI配置信息测量的信道,W1为UE基于所述待测量上报的该组CSI配置信息测量选择的预编码矩阵,I0为所述待测量上报的该组CSI配置信息之外的干扰,N为噪声。|H0W0|2和|H1W1|2为考虑网络设备配置的数据与导频的功率之后计算得到的值,作为另一个可选的示例,上述公式中的|H0W0|2和|H1W1|2可替换为Px|H0W0|2和Py|H1W1|2其中Px,Py为网络设备配置的数据与导频的功率值。The reference CQI is the value of the CQI included in the CSI corresponding to the reference CSI configuration information, P1 and P2 are the power values corresponding to the CSI configuration information, and the threshold 3 is the third threshold, and | 2 is the modulo The squared, H 0 is a matrix of channels measured by the UE based on the reference CSI configuration information, and W 0 is a precoding matrix selected by the UE based on the reference CSI configuration information, where H 1 is the UE that is reported based on the to-be-measured a channel for measuring CSI configuration information, where W 1 is a measurement of a precoding matrix selected by the UE based on the set of CSI configuration information to be measured, and I 0 is interference of the group of CSI configuration information to be measured and reported. N is noise. |H 0 W 0 | 2 and |H 1 W 1 | 2 are values calculated after considering the data of the network device configuration and the power of the pilot, as another optional example, |H 0 W 0 in the above formula 2 and |H 1 W 1 | 2 can be replaced by P x |H 0 W 0 | 2 and P y |H 1 W 1 | 2 where P x , P y are the power values of the data and pilots configured by the network device .
可选的,UE上报以上功率值门限时,可以与CRI,RI,PMI或者CQI一起上报。一起上报的方式可以参考前述指示信息与CRI,RI,PMI或者CQI一起上报的方式中的描述,即该功率值门限可以与CRI,RI,PMI或者CQI中的一个或多个一起发送,具体的,可以一起编码调制,或单独进行编码调制,顺序可以该功率值门限在前,也可以该功率值门限在后。具体的一起上报方式可以由系统预定义,也可以通过PUCCH的上报类型进行配置。Optionally, when the UE reports the above power threshold, it can report with the CRI, RI, PMI, or CQI. The manner of reporting together may refer to the description in the manner in which the foregoing indication information is reported together with CRI, RI, PMI or CQI, that is, the power value threshold may be sent together with one or more of CRI, RI, PMI or CQI, specific The code modulation may be coded together, or the code modulation may be performed separately. The power value may be thresholded in the order, or the power value threshold may be followed. The specific reporting method can be pre-defined by the system or configured by the reporting type of the PUCCH.
该功率值门限的上报可以采用相对值也可以采用绝对值进行上报。The reporting of the power value threshold may be performed by using a relative value or an absolute value.
比如采用相对值时,功率值门限的相对值(如1,1/2,1/3,1/4)划分为2个等级,则需要占用1个bit进行上报,划分为4个等级则需要2个bit进行上报。举例如下:For example, when a relative value is used, the relative value of the power threshold (such as 1, 1/2, 1/3, 1/4) is divided into two levels, and one bit is required to be reported, and four levels are required. 2 bits are reported. Examples are as follows:
功率信息bit值Power information bit value 功率相对值Relative value of power
0000 11
0101 1/21/2
1010 1/31/3
1111 1/41/4
或者采用绝对值时,功率值门限的绝对值(比如-8到15的整数)进行数值的量化,量化间隔可以由系统预定义,为1或者2或者更大的值。量化间隔不同,功率值门限所占的bit数不同。比如绝对值为-8到15的整数时,量化间隔为1的话功率值门限需要占用5个bit,量化间隔为2的话功率值门限需要占用4个bit,量化间隔为4的话功率值门限需要占用3个bit等等。Or, in absolute value, the absolute value of the power value threshold (such as an integer from -8 to 15) is quantized, and the quantization interval can be predefined by the system to be 1 or 2 or greater. The quantization interval is different, and the power value threshold accounts for a different number of bits. For example, if the absolute value is an integer from -8 to 15, the power value threshold needs to occupy 5 bits when the quantization interval is 1, and the power value threshold needs to occupy 4 bits when the quantization interval is 2. If the quantization interval is 4, the power value threshold needs to be occupied. 3 bits and so on.
功率信息bit值Power information bit value 功率绝对值Absolute power
000000 (-∞,-8)(-∞,-8)
001001 [-8,-4][-8,-4]
010010 (-4,0](-4,0]
011011 (0,4](0,4)
100100 (4,8](4,8)
101101 (8,12](8,12)
110110 (12,16](12,16)
111111 (16,+∞)(16, +∞)
可选的,UE是否上报该功率信息,可以由系统预定义,或者,由传输点进行配置,比如通过CSI配置信息进行配置,也可以通过其他信令进行配置。Optionally, whether the UE reports the power information may be predefined by the system, or configured by the transmission point, for example, by using CSI configuration information, or configured by other signaling.
协作传输点获取在协同场景中需被考虑的小区(邻区的波束)的信息(如CSI)以及对应的功率值门限后,可以灵活的进行协作调度传输。比如针对干扰波束(CS/CB中需被考虑的小区(波束))可以采用小于所上报的功率值门限的功率(或者协作TP可以根据该上报功率值门限根据固定的算法确定传输功率值,比如同时考虑上报的功率值门限与路损值,具体的可以是上报功率值门限+路损值=传输功率值)进行传输,即起到干扰协作的目的,又不影响对本小区UE的波束的调度。与直接规避该波束相比,可以提升系统性能。The coordinated transmission point obtains the information (such as the CSI) of the cell (the neighboring area beam) to be considered in the coordinated scenario and the corresponding power value threshold, and can perform the cooperative scheduling transmission flexibly. For example, for the interference beam (the cell (beam) to be considered in the CS/CB), the power smaller than the reported power value threshold may be used (or the cooperative TP may determine the transmission power value according to the fixed algorithm according to the reported power value threshold, for example, At the same time, the reported power value threshold and the path loss value, specifically the reported power value threshold + path loss value = transmission power value, are transmitted, that is, the purpose of interference coordination is not affected, and the beam scheduling of the UE of the local cell is not affected. . System performance can be improved compared to directly circumventing the beam.
进一步的,对应于一组CSI配置信息,UE反馈的一组CSI可以包括多个CSI。UE可以针对所有的码字进行CSI的测量,从而获得一个或多个CSI。每个CSI可以针对一个码字,不同CSI针对不同的码字。具体的,UE反馈的一组CSI包括的CSI的个数可以由协议预定,也可以通过网络设备进行配置,从测量获得的所有CSI中确定哪几个CSI进行反馈,具体原则可以为协议预定的,也可以通过网络设备进行配置。具体的原则可以为:仅 反馈指示信道质量好(也可称为干扰强)的排名为前若干位的CSI(比如,CQI的值为比较大的几个),具体个数由需反馈的CSI的个数确定。对应于不同组CSI配置信息所需反馈的CSI的个数可以相同也可以不同。当不同组CSI配置信息所需反馈的CSI的个数相同时,用于配置不同组CSI配置信息所需反馈的CSI个数的配置参数可以为公共的。当一组CSI包括多个CSI时,上述功率值门限也可以相应的反馈多个功率值门限,也可以仅反馈部分CSI对应的功率值门限,如仅反馈与第一个CSI对应的功率值门限。这个可以根据需要由系统预定义。Further, corresponding to a set of CSI configuration information, a group of CSIs fed back by the UE may include multiple CSIs. The UE may perform CSI measurement for all codewords to obtain one or more CSIs. Each CSI can be for one codeword and different CSIs for different codewords. Specifically, the number of CSIs included in a group of CSIs that are fed back by the UE may be determined by a protocol, or may be configured by using a network device, and determining which CSIs are used for feedback from all the CSIs obtained by the measurement, and the specific principle may be a protocol reservation. It can also be configured through a network device. The specific principle can be: only The feedback indicates that the channel quality is good (also called strong interference), and the ranking is the CSI of the first few bits (for example, the value of the CQI is relatively large), and the specific number is determined by the number of CSIs to be fed back. The number of CSIs corresponding to the feedback required for different sets of CSI configuration information may be the same or different. When the number of CSIs required for feedback of different sets of CSI configuration information is the same, the configuration parameters of the number of CSIs required for configuring different sets of CSI configuration information may be common. When a group of CSIs includes multiple CSIs, the power threshold may be correspondingly fed back to multiple power value thresholds, or may only be fed back to a power threshold corresponding to a portion of the CSI, such as only feeding back a power threshold corresponding to the first CSI. . This can be predefined by the system as needed.
指示每组CSI中所包括的CSI的个数的方式可以有多种,比如指示信息为bitmap的形式时,上述bitmap中的每组比特还可以用于指示具体所反馈的每组CSI中所包括的CSI的个数,且每组比特的比特数可以在协议中预定为相同的,或是不同的。比如,当协议预定或配置对应每组CSI配置信息均上报(反馈)一个最强干扰(或最佳信道质量)时,bitmap中每个bit表示一个小区的干扰(信道)上报情况,1表示上报了该小区的最强干扰(最佳信道)的信息,0表示该小区没有上报干扰(信道)的信息。或者,如每个小区上报最多两个最强干扰时,则bitmap中每两个bit表示一个小区,00表示UE没有上报该小区的干扰(或信道)的信息,01表示UE上报了该小区的一个干扰(信道)的信息,10表示上报了该小区的两个干扰(信道)的信息。可以理解的是,也可以通过其他信息来指示具体所反馈的每组CSI中所包括的CSI的个数。在此不予限定。There may be multiple ways of indicating the number of CSIs included in each group of CSIs. For example, when the indication information is in the form of a bitmap, each group of bits in the above bitmap may also be used to indicate that each group of CSIs that are specifically fed back is included. The number of CSIs, and the number of bits per group of bits can be predetermined to be the same or different in the protocol. For example, when the protocol is scheduled or configured to report (feedback) a strongest interference (or the best channel quality) for each group of CSI configuration information, each bit in the bitmap represents the interference (channel) reporting of one cell, and 1 indicates the reporting. The information of the strongest interference (best channel) of the cell, 0 indicates that the cell does not report interference (channel) information. Or, if each cell reports a maximum of two strongest interferences, each of the two bits in the bitmap represents one cell, 00 indicates that the UE does not report interference (or channel) information of the cell, and 01 indicates that the UE reports the cell. One interference (channel) information, 10 indicates information reporting two interferences (channels) of the cell. It can be understood that the number of CSIs included in each group of CSIs that are specifically fed back can also be indicated by other information. This is not limited here.
当UE反馈的一组CSI包括多个CSI时,上述UE确定所需反馈的N组CSI的方式也可以适用,只是在反馈一组CSI时,根据协议预定或网络配置反馈相应个CSI,在比较时,考虑待确定是否反馈的一组CSI中的多个CQI和基准CSI中的多个CQI。可选的,一种方式是:将待确定是否反馈的一组CSI中的多个CQI(比如3个CQI,对应3个码字)分别与基准CSI中的多个CQI(比如3个CQI,对应3个码字)分别比较,得到相应个数的差值(比如3个CQI与基准CSI中的3个CQI进行比较,得到9个差值),取所得到的差值的函数(该函数可以为取最大,取最小,或者,取平均值,或者,其他数学运算)与相应的门限值进行比较,进而决定该组CSI是否被反馈。可选的,另一种方式是:将待确定是否反馈的一组CSI中的多个CQI的最大值与基准CSI中的多个CQI的最大值或最小值进行比较,得到的差值与相应的门限值进行比较,或者,将待确定是否反馈的一组CSI中的多个CQI的最小值与基准CSI中的多个CQI的最大值或最小值进行比较,得到的差值与相应的门限值进行比较,进而决定该组CSI是否被反馈。若确定该组CSI被反馈,再依据该组CSI中所需反馈的个数以及相应的反馈原则(比如,前面提到的反馈原则,如依据干扰强 度)进行反馈。可以理解的是,具体的门限值可以根据前述差值的函数或比较的对象的不同而有所不同,门限值的确定可以通过协议预定义或通过网络设备进行配置,在此不予限定。When a group of CSIs that are fed back by the UE includes multiple CSIs, the manner in which the UE determines the N sets of CSIs that need to be fed back may also be applicable, but when a group of CSIs is fed back, the corresponding CSIs are fed back according to the protocol reservation or the network configuration, in comparison. At the time, a plurality of CQIs in a set of CSIs to be determined whether to be fed back and a plurality of CQIs in the reference CSI are considered. Optionally, one manner is: respectively, multiple CQIs (such as 3 CQIs, corresponding to 3 codewords) in a group of CSIs to be determined whether to feed back, and multiple CQIs in the reference CSI (such as 3 CQIs, Corresponding to the three codewords, respectively, to obtain the difference of the corresponding number (for example, three CQIs are compared with three CQIs in the reference CSI to obtain nine differences), and the function of the obtained difference is obtained (the function) It can be compared with the corresponding threshold value to determine whether the set of CSI is fed back, whether it is the largest, the smallest, or the average, or other mathematical operations. Optionally, another method is: comparing a maximum value of multiple CQIs in a group of CSIs to be determined whether to be fed back with a maximum value or a minimum value of multiple CQIs in a reference CSI, and obtaining a difference value and corresponding The threshold values are compared, or the minimum values of the plurality of CQIs in a set of CSIs to be determined whether to be fed back are compared with the maximum or minimum values of the plurality of CQIs in the reference CSI, and the obtained difference values are corresponding to The threshold values are compared to determine whether the set of CSIs is fed back. If it is determined that the CSI is fed back, according to the number of feedbacks required in the CSI and the corresponding feedback principle (for example, the feedback principle mentioned above, such as strong interference) Degree) for feedback. It can be understood that the specific threshold value may be different according to the function of the foregoing difference value or the object to be compared. The determination of the threshold value may be predefined by a protocol or configured by a network device, and is not limited herein. .
可以理解的是,前述所反馈的N组CSI中的每组CSI(也称为,每组CSI中的每个CSI)所包括的内容可以相同也可以不同。具体的,每组CSI所包括的内容是RI,全带或子带PMI和CQI中的一个或多个的组合,也可以称为CSI的类型,比如仅包括RI和全带PMI,或是,仅包括RI和子带PMI,或是,包括RI、全带PMI和CQI,或是,包括RI、子带PMI和CQI,在此不予完全罗列。所述每组CSI的类型可以通过协议预定义或者,通过网络设备进行配置,比如UE接收来自网络设备的指示每组CSI的类型的信息,该指示每组CSI的类型的信息可以承载在高层信令如RRC信令中,可选的,该指示每组CSI的类型的信息可以携带在前述CSI配置信息中进行配置。It can be understood that the content included in each of the aforementioned N sets of CSIs fed back (also referred to as each CSI in each group of CSIs) may be the same or different. Specifically, the content included in each group of CSIs is RI, a combination of one or more of the full-band or sub-band PMI and CQI, and may also be referred to as a CSI type, such as only including RI and full-band PMI, or Only RI and sub-band PMI are included, or include RI, full-band PMI, and CQI, or include RI, sub-band PMI, and CQI, which are not fully listed here. The type of the CSI may be pre-defined by a protocol or configured by a network device, for example, the UE receives information indicating a type of each group of CSIs from the network device, and the information indicating the type of each group of CSIs may be carried in a high-level letter. For example, in the RRC signaling, the information indicating the type of each group of CSI may be carried in the foregoing CSI configuration information for configuration.
举例而言,可以在一条CSI进程信元信息中增加指示信息,用于指示对应于该CSI进程所指示的CSI配置信息仅需反馈RI和PMI,无需反馈CQI。比如如下信元中的pmi-ReportProc-r14信元。For example, the indication information may be added to the CSI process cell information to indicate that the CSI configuration information indicated by the CSI process only needs to feed back the RI and the PMI, and does not need to feed back the CQI. For example, the pmi-ReportProc-r14 cell in the following cell.
Figure PCTCN2017097146-appb-000019
Figure PCTCN2017097146-appb-000019
Figure PCTCN2017097146-appb-000020
Figure PCTCN2017097146-appb-000020
Figure PCTCN2017097146-appb-000021
Figure PCTCN2017097146-appb-000021
或是,可以在一条CSI进程信元信息中的多套NZP CSI-RS资源信息中增加指示信息,用于指示对应于该NZP CSI-RS资源信息所指示的CSI配置信息仅需反馈RI和PMI,无需反馈CQI。比如如下信元中的csi-RS-ConfigNZPIDList-r11指示多套NZP CSI-RS资源信息,pmi-ReportNZPList-r14指示多套NZP CSI-RS资源信息所指示的CSI配置信息中的哪些只需要反馈RI和PMI,无需反馈CQI。Or, the indication information may be added to the NZP CSI-RS resource information in the CSI process cell information, where the CSI configuration information indicated by the NZP CSI-RS resource information is only required to feed back the RI and the PMI. No need to feedback CQI. For example, csi-RS-ConfigNZPIDList-r11 in the following cell indicates multiple sets of NZP CSI-RS resource information, and pmi-ReportNZPList-r14 indicates which of the CSI configuration information indicated by multiple sets of NZP CSI-RS resource information only needs feedback RI. And PMI, no feedback CQI.
Figure PCTCN2017097146-appb-000022
Figure PCTCN2017097146-appb-000022
Figure PCTCN2017097146-appb-000023
Figure PCTCN2017097146-appb-000023
Figure PCTCN2017097146-appb-000024
Figure PCTCN2017097146-appb-000024
Figure PCTCN2017097146-appb-000025
Figure PCTCN2017097146-appb-000025
通过本申请实施例提供的CSI反馈方法,UE可以不针对所配置的所有CSI配置信息反馈对应的CSI,这样可以一方面降低协作中CSI反馈所需的资源数量,另一方面可以有利于网络设备更高效的执行调度。进一步的,UE所反馈的CSI是在UE侧进行了筛选的,这可以提高所反馈的CSI对网络设备的调度的有效性。With the CSI feedback method provided by the embodiment of the present application, the UE may not feed back the corresponding CSI for all configured CSI configuration information, so that the number of resources required for CSI feedback in cooperation may be reduced on the one hand, and the network device may be beneficial on the other hand. More efficient execution scheduling. Further, the CSI fed back by the UE is filtered on the UE side, which can improve the effectiveness of the fed back CSI for scheduling the network device.
在本申请实施例还提出了另一种CSI反馈方法,与前一方法的不同在于,S101中的所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息,M为大于或等于1的整数;相应的,S102中,N组CSI不包括对应于所述服务小区的CSI配置信息的CSI且所述N为大于或等于0且不大于M的整数。则S103中的所述指示信息采用bitmap的形式时,指示信息包括M组比特,每组比特包括至少1个比特,且每组比特指示所述M组CSI配置信息中的一组CSI配置信息所对应的CSI是否被所述用户设备反馈。相应的,UE确定所需反馈的N组CSI的方式中不包括对应于所述UE的服务小区的CSI配置信息的CSI的反馈,也不包括将所述对应于所述UE的服务小区的CSI配置信息的CSI作为基准CSI的方案,其他方案,如将对应于M组CSI配置信息的M组CSI中指示信道质量最好的一组CSI进行上报,和/或,作为基准CSI与其他M-1组CSI配置信息对应的M-1组CSI进行比较的方案仍旧适用。本CSI反馈方法中的其他方面的描述均可参考前述CSI反馈方法中的描述。An embodiment of the present application further provides another CSI feedback method, which is different from the previous method, in which the MSI CSI configuration information in S101 does not include CSI configuration information corresponding to the serving cell of the user equipment, M is an integer greater than or equal to 1; correspondingly, in S102, the N sets of CSIs do not include CSI corresponding to CSI configuration information of the serving cell and the N is an integer greater than or equal to 0 and not greater than M. Then, when the indication information in S103 is in the form of a bitmap, the indication information includes M groups of bits, each group of bits includes at least 1 bit, and each group of bits indicates a group of CSI configuration information in the M group of CSI configuration information. Whether the corresponding CSI is fed back by the user equipment. Correspondingly, the manner in which the UE determines the N sets of CSIs to be fed back does not include the CSI feedback corresponding to the CSI configuration information of the serving cell of the UE, and does not include the CSI of the serving cell corresponding to the UE. The CSI of the configuration information is used as a scheme of the reference CSI. Other schemes, such as reporting a group of CSIs indicating the best channel quality in the M-group CSI corresponding to the M-group CSI configuration information, and/or as the reference CSI and other M- The scheme for comparing the M-1 group CSI corresponding to one group of CSI configuration information is still applicable. The descriptions of other aspects in the present CSI feedback method can be referred to the description in the foregoing CSI feedback method.
在以上CSI反馈方法中,所述用于指示N组CSI所对应的N组CSI配置信息的指示信息和N组CSI的上报具体可以以以下方式中的一种或多种的结合进行: In the above CSI feedback method, the indication information for indicating the N sets of CSI configuration information corresponding to the N sets of CSIs and the reporting of the N sets of CSI may be specifically performed in a combination of one or more of the following manners:
方式1)通过PUCCH(物理上行控制信道)传输Mode 1) Transmission through PUCCH (Physical Uplink Control Channel)
可以定义一种PUCCH格式,用于传输所述指示信息。比如定义PUCCH格式6:对应于多小区(或TP)测量下的指示信息的反馈A PUCCH format may be defined for transmitting the indication information. For example, defining PUCCH format 6: feedback corresponding to indication information under multi-cell (or TP) measurement
时域上,UE可以先采用PUCCH格式6传输指示信息,再用PUCCH格式2,2a,或,2b传输所述指示信息所指示的CSI。或者,也可以用PUCCH格式2,2a,或,2b传输CSI,再采用PUCCH格式6传输该CSI所对应的指示信息。而在网络设备侧,网络设备对CSI的处理,依赖于指示该CSI的指示信息。In the time domain, the UE may first transmit the indication information in the PUCCH format 6, and then transmit the CSI indicated by the indication information in the PUCCH format 2, 2a, or 2b. Alternatively, the CSI may be transmitted in the PUCCH format 2, 2a, or 2b, and the indication information corresponding to the CSI may be transmitted in the PUCCH format 6. On the network device side, the processing of the CSI by the network device depends on the indication information indicating the CSI.
可以通过CSI配置信息指示所述指示信息的反馈是周期性的(可以和CSI反馈的周期一致),也可以通过其他信息指示所述指示信息的反馈是周期性的。The feedback of the indication information may be periodically indicated by the CSI configuration information (which may be consistent with the period of the CSI feedback), or may be indicated by other information that the feedback of the indication information is periodic.
可选的,所述指示信息的周期的配置可以通过在现有的CQI反馈周期的指示信令中增加信令(如下),比如bitmap-indicator-ConfigIndex,用于指示所述指示信息的反馈周期。Optionally, the configuration of the indication information period may be performed by adding signaling (such as a bitmap) to the indication signaling of the existing CQI feedback period, such as a bitmap-indicator-ConfigIndex, for indicating a feedback period of the indication information. .
Figure PCTCN2017097146-appb-000026
Figure PCTCN2017097146-appb-000026
反馈所述指示信息的时域资源可以根据Npd和NOFFSET,Indicator得到,其中,Npd为所述指示信息的反馈周期,NOFFSET,Indicator为所述时域资源的起始位置与子帧起始位置的偏置。比如: 无线帧号为nf,时隙号为ns,当满足公式
Figure PCTCN2017097146-appb-000027
时该时隙中的以NOFFSET,Indicator为起始位置的一块资源用于所述指示信息的传输。
The time domain resource that feeds back the indication information may be obtained according to N pd and N OFFSET, Inc. , where N pd is a feedback period of the indication information, and N OFFSET, Inc. is a start position and a subframe of the time domain resource. The offset of the starting position. For example: the radio frame number is n f and the slot number is n s when the formula is satisfied
Figure PCTCN2017097146-appb-000027
A resource in the time slot with N OFFSET, Indicator as a starting position is used for transmission of the indication information.
具体的Npd和NOFFSET,Indicator可以通过协议预定义,也可以通过网络设备配置,还可以通过间接的方式配置,如果网络设备配置Npd和NOFFSET,Indicator相关的参数,如IIndicator,用户设备可以根据预设的三者间的关系(一种示例如下表),获得相应的Npd和NOFFSET,Indicator的值。其中,IIndicator可以由网络设备根据实际情况进行配置,比如UE移动速度大时,相应的IIndicator的值可以较小,UE移动速度小时,相应的IIndicator的值可以较大。The specific N pd and N OFFSET, the indicator can be pre-defined by the protocol, can also be configured through the network device, and can also be configured in an indirect manner. If the network device is configured with N pd and N OFFSET, the indicators related to the indicator, such as I Indicator , the user The device can obtain the values of the corresponding N pd and N OFFSET, Indicator according to the preset relationship among the three (an example is as follows). The I indicator can be configured by the network device according to the actual situation. For example, when the UE moves at a high speed, the value of the corresponding I Indicator can be small, and the moving speed of the UE is small, and the value of the corresponding I Indicator can be large.
Figure PCTCN2017097146-appb-000028
Figure PCTCN2017097146-appb-000028
可选的,所述指示信息的反馈周期也可以采用根据CQI反馈周期来得到,而不额外增加信令。比如,所述指示信息的反馈周期可以与CQI反馈周期相同,比如全带CQI周期或 者子带CQI周期。而具体的CQI反馈周期的获得可以通过现有的方式得到,也可以通过其他方式得到,在此不予赘述。Optionally, the feedback period of the indication information may also be obtained according to a CQI feedback period without additional signaling. For example, the feedback period of the indication information may be the same as the CQI feedback period, such as a full-band CQI period or The sub-band has a CQI cycle. The specific CQI feedback period can be obtained by the existing method, or can be obtained by other means, and will not be described here.
可选的,在频域上,PUCCH格式6的PUCCH可以在工作带宽的两侧进行发送,比如,在工作带宽的两侧各占用1个RB位置。Optionally, in the frequency domain, the PUCCH of the PUCCH format 6 can be sent on both sides of the working bandwidth, for example, occupying one RB position on each side of the working bandwidth.
方式2)通过PUSCH(物理上行共享信道)传输Mode 2) Transmission over PUSCH (Physical Uplink Shared Channel)
可以在PUSCH所占的资源上分配一块资源用于所述指示信息的传输,比如,可以分配某1个或多个子载波或某1个或多个符号,或者,某个图样(pattern)对应的时频资源。A resource may be allocated on the resource occupied by the PUSCH for the transmission of the indication information. For example, one or more subcarriers or one or more symbols may be allocated, or a certain pattern is corresponding. Time-frequency resources.
基于以上方式1)或2),在时域上,所述指示信息可以与CSI信息在同一个时间单元,如子帧,中上报,也可以在不同的子帧中上报。UE上报CSI前可以先上报对应的指示信息,也可以上报CSI后上报对应的指示信息。Based on the above manners 1) or 2), in the time domain, the indication information may be reported in the same time unit as the CSI information, such as a subframe, or may be reported in a different subframe. Before reporting the CSI, the UE may report the corresponding indication information, or report the corresponding indication information after reporting the CSI.
其中,N组CSI的反馈方式可以为:The feedback mode of the N sets of CSIs may be:
(1)如果在1条CSI process信息中配置了M组CSI配置信息,UE可以将对应于N组CSI配置信息的N组CSI信息在同一个子帧中上报。比如可以采用现有的多CSI反馈的格式,如format4-MultiCSI-resourceConfiguration或者format5-MultiCSI-resourceConfiguration,进行上报。上报的周期为协议预定义或网络设备配置的CSI的上报周期。或者,(1) If the M-group CSI configuration information is configured in one CSI process information, the UE may report the N sets of CSI information corresponding to the N sets of CSI configuration information in the same subframe. For example, the existing multi-CSI feedback format, such as format4-MultiCSI-resourceConfiguration or format5-MultiCSI-resourceConfiguration, can be used for reporting. The reporting period is the reporting period of the CSI that is predefined by the protocol or configured by the network device. or,
N组CSI在不同的子帧中传输。比如按照对应的N组CSI配置信息的标识(ID)(如NZP CSI-RS ID或者CSI-IM ID)递增的顺序进行上报。可选的,在上报N组CSI之前先上报指示信息。如果指示信息中指示对应于一组CSI配置信息的CSI不上报,可以在相应的用于上报该组CSI的子帧上上报指示信息中所指示的有反馈的下一组CSI配置信息的ID对应的CSI,或者,在该相应的子帧上该UE不传输信息,网络设备调度其他的UE进行信息的传输(因为网络设备通过指示信息知道该UE不上报了,所以可以调度其他的UE进行传输)。The N sets of CSIs are transmitted in different subframes. For example, the report is performed in the order of increasing the identifier (ID) of the corresponding N sets of CSI configuration information (such as the NZP CSI-RS ID or the CSI-IM ID). Optionally, the indication information is reported before the N sets of CSIs are reported. If the indication information indicates that the CSI corresponding to the CSI configuration information is not reported, the ID corresponding to the next set of CSI configuration information indicated by the indication information indicated in the indication information may be reported in the corresponding subframe for reporting the CSI. The CSI, or the UE does not transmit information on the corresponding subframe, and the network device schedules other UEs to perform information transmission (because the network device knows that the UE is not reported by the indication information, other UEs may be scheduled for transmission. ).
(2)如果M组CSI配置信息通过多条CSI process配置,则可以有两种方式:(2) If the M-group CSI configuration information is configured through multiple CSI processes, there are two ways:
(2.1)UE将对应于N组CSI配置信息的N组CSI按照CSI的周期进行上报。(2.1) The UE reports the N sets of CSIs corresponding to the N sets of CSI configuration information according to the CSI period.
上报时将N组CSI在同一个子帧中上报。比如可以采用现有的format4-MultiCSI-resourceConfiguration或者format5-MultiCSI-resourceConfiguration的方式进行上报。或者,When reporting, the N sets of CSIs are reported in the same subframe. For example, the existing format4-MultiCSI-resourceConfiguration or format5-MultiCSI-resourceConfiguration can be used for reporting. or,
(2.2)UE将对应于N组CSI配置信息的N组CSI按照前述用于指示N组CSI对应的N组CSI配置信息的指示信息的周期进行上报,上报时可以将N组CSI信息在同一个 子帧中上报。比如可以采用现有的format4-MultiCSI-resourceConfiguration或者format5-MultiCSI-resourceConfiguration的方式进行上报。(2.2) The UE reports the N sets of CSIs corresponding to the N sets of CSI configuration information according to the foregoing period for indicating the N sets of CSI configuration information corresponding to the N sets of CSIs, and can report the N sets of CSI information in the same Reported in a sub-frame. For example, the existing format4-MultiCSI-resourceConfiguration or format5-MultiCSI-resourceConfiguration can be used for reporting.
具体的,所述format4和format5的资源配置方法可以参考现有协议中的方式,如下:Specifically, the resource configuration methods of the format4 and the format5 may refer to the manner in the existing protocol, as follows:
Figure PCTCN2017097146-appb-000029
Figure PCTCN2017097146-appb-000029
Figure PCTCN2017097146-appb-000030
Figure PCTCN2017097146-appb-000030
在方式2.1或2.2中,替代于UE将N组CSI放在同一个子帧中传输,UE可以将N组CSI采用不同的子帧进行传输。比如按照CSI process ID递增的顺序进行上报。可选的,可以在上报CSI之前先上报相应的指示信息。如果指示信息指示一组CSI配置信息对应的CSI不上报,可以在相应的用于上报该组CSI的子帧上上报指示信息中所指示的有反馈的下一组CSI配置信息的ID对应的CSI,或者,在该相应的子帧上该UE不传输信息,网络设备调度其他的UE进行信息的传输(因为网络设备通过指示信息知道该UE不上报了,所以可以调度其他的UE进行传输)。In mode 2.1 or 2.2, instead of the UE transmitting the N sets of CSIs in the same subframe, the UE may transmit the N sets of CSIs in different subframes. For example, the CSI process ID is reported in the order of increasing. Optionally, the corresponding indication information may be reported before the CSI is reported. If the indication information indicates that the CSI corresponding to the CSI configuration information is not reported, the CSI corresponding to the ID of the next set of CSI configuration information with the feedback indicated in the indication information may be reported in the corresponding subframe for reporting the CSI. Or, the UE does not transmit information on the corresponding subframe, and the network device schedules other UEs to perform information transmission (because the network device knows that the UE is not reported by the indication information, other UEs may be scheduled for transmission).
图2所示为本申请实施例所应用的一种场景的示意图,包括第一传输点TP1和第二传输点TP2,TP1管理的小区1和TP2管理的小区2,以及UE1和UE2。FIG. 2 is a schematic diagram of a scenario applied to an embodiment of the present application, including a first transmission point TP1 and a second transmission point TP2, a cell 1 managed by TP1, and a cell 2 managed by TP2, and UE1 and UE2.
基于相同的技术构思,本申请实施例还提供了一种用于CSI反馈的装置,该装置可以为上述方法中描述的用户设备,也可以为能够实现上述方法中用户设备的动作的其他设备。Based on the same technical concept, the embodiment of the present application further provides a device for CSI feedback, which may be the user equipment described in the foregoing method, or other device capable of implementing the action of the user equipment in the foregoing method.
参见图3a和图3b,为本发明实施例提供的用于信道状态反馈(或称为信道状态信息反馈)的装置的结构示意图。如图3a所示,该装置可包括:接收单元301,发送单元302和处理单元303,其中:3a and 3b are schematic structural diagrams of an apparatus for channel state feedback (or channel state information feedback) according to an embodiment of the present invention. As shown in FIG. 3a, the apparatus may include: a receiving unit 301, a transmitting unit 302, and a processing unit 303, where:
接收单元301,可用于执行以上方法中所描述的用户设备所执行的接收动作;The receiving unit 301 is configured to perform a receiving action performed by the user equipment described in the foregoing method;
发送单元302,可用于执行以上方法中所描述的用户设备所执行的发送动作;The sending unit 302 is configured to perform a sending action performed by the user equipment described in the foregoing method;
处理单元303,可用于对接收单元301所接收的信号进行以上方法所描述的相应的处理,和/或,对发送单元302所要发送的信号进行以上方法所描述的相应的处理并通过所述发送单元302发送所述信号。The processing unit 303 can be configured to perform the corresponding processing described in the foregoing method on the signal received by the receiving unit 301, and/or perform the corresponding processing described in the foregoing method on the signal to be sent by the sending unit 302, and send the corresponding method by using the foregoing method. Unit 302 transmits the signal.
其中,接收单元301和发送单元302可以采用图3b中的收发器3001实现,处理单元303可以采用处理器3002实现,或者,采用处理器3002和存储器3003实现。The receiving unit 301 and the sending unit 302 can be implemented by using the transceiver 3001 in FIG. 3b, and the processing unit 303 can be implemented by using the processor 3002, or by using the processor 3002 and the memory 3003.
具体细节,可以参考以上方法中的描述,在此不予赘述。For specific details, reference may be made to the description in the above method, and details are not described herein.
比如,接收单元301,可用于接收来自网络设备的M组CSI配置信息,其中,M为大于或等于1的整数;For example, the receiving unit 301 can be configured to receive M group CSI configuration information from the network device, where M is an integer greater than or equal to 1;
处理单元303,可用于根据所述CSI配置信息通过所述发送单元302反馈对应于所述 M组CSI配置信息的M组CSI中的N组CSI,其中N为大于或等于0且不大于M的整数。The processing unit 303 is configured to: according to the CSI configuration information, feed back, by the sending unit 302, corresponding to the N sets of CSIs in the M group CSI of the M group CSI configuration information, where N is an integer greater than or equal to 0 and not greater than M.
对应的,如图3b所示,该装置可包括:收发器3001和处理器3002。处理器3002用于控制该装置的操作,包括通过收发器3001进行数据的传输(包括接收和/或发送)。进一步的,还可以包括存储器3003,存储器3003可以包括只读存储器和随机存取存储器,用于向处理器3002提供指令和数据。存储器3003可以集成于处理器3002中,也可以独立于处理器3002。存储器3003的一部分还可以包括非易失行随机存取存储器(NVRAM)。该装置的各个组件通过总线系统耦合在一起,其中总线系统3009除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图中将各种总线都标为总线系统3009。Correspondingly, as shown in FIG. 3b, the apparatus may include: a transceiver 3001 and a processor 3002. The processor 3002 is configured to control the operation of the apparatus, including transmitting (including receiving and/or transmitting) data through the transceiver 3001. Further, a memory 3003 may be included. The memory 3003 may include a read only memory and a random access memory for providing instructions and data to the processor 3002. The memory 3003 may be integrated in the processor 3002 or may be independent of the processor 3002. A portion of the memory 3003 may also include non-volatile line random access memory (NVRAM). The various components of the apparatus are coupled together by a bus system, wherein the bus system 3009 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 3009 in the figure.
本申请实施例揭示的流程可以应用于处理器3002中,或者由处理器3002实现。在实现过程中,该装置实现的流程的各步骤可以通过处理器3002中的硬件的集成逻辑电路或者软件形式的指令完成。处理器3002可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器3003,处理器3002读取存储器3003中的信息,结合其硬件完成本发明实施例指示流程的步骤。The flow disclosed in the embodiment of the present application may be applied to the processor 3002 or implemented by the processor 3002. In the implementation process, each step of the process implemented by the device may be completed by an integrated logic circuit of hardware in the processor 3002 or an instruction in the form of software. The processor 3002 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application. Various methods, steps, and logic blocks of the disclosure. A general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 3003, and the processor 3002 reads the information in the memory 3003, and completes the steps of the instruction flow of the embodiment of the present invention in combination with the hardware thereof.
进一步的,当所述装置为用户设备时,还可以进一步包括输入设备,如键盘,输出设备,如显示屏等结构,在此不予赘述。Further, when the device is a user equipment, it may further include an input device, such as a keyboard, an output device, such as a display screen, and the like, and details are not described herein.
基于相同的技术构思,本发明实施例还提供了一种用于信道状态反馈(或称为信道状态信息获得)的装置,该装置可以为以上方法中所描述的网络设备,更具体地可以是传输点,比如基站,也可以为能够实现上述方法中所描述的网络设备相应功能的设备。Based on the same technical concept, the embodiment of the present invention further provides an apparatus for channel state feedback (or channel state information acquisition), which may be the network device described in the above method, and more specifically may be A transmission point, such as a base station, may also be a device capable of implementing the corresponding functions of the network device described in the above method.
参见图4a和图4b,为本发明实施例提供的用于信道状态反馈的装置的结构示意图。如图4a所示,该装置可包括:发送单元401,接收单元402和处理单元403,其中:4a and 4b are schematic structural diagrams of an apparatus for channel state feedback according to an embodiment of the present invention. As shown in FIG. 4a, the apparatus may include: a transmitting unit 401, a receiving unit 402, and a processing unit 403, where:
发送单元401,可用于执行以上方法中所描述的网络设备所执行的发送动作;The sending unit 401 is configured to perform a sending action performed by the network device described in the foregoing method;
接收单元402,可用于执行以上方法中所描述的网络设备所执行的接收动作;The receiving unit 402 is configured to perform a receiving action performed by the network device described in the foregoing method;
处理单元403,可用于对接收单元402所接收的信号进行以上方法所描述的相应的处理,和/或,对发送单元401所要发送的信号进行以上方法所描述的相应的处理并通过所述 发送单元401发送所述信号。The processing unit 403 can be configured to perform the corresponding processing described in the foregoing method on the signal received by the receiving unit 402, and/or perform the corresponding processing described in the foregoing method on the signal to be sent by the sending unit 401 and pass the The transmitting unit 401 transmits the signal.
其中,接收单元402和发送单元401可以采用图4b中的收发器4001实现,处理单元403可以采用处理器4002实现,或者,采用处理器4002和存储器4003实现。The receiving unit 402 and the sending unit 401 can be implemented by using the transceiver 4001 in FIG. 4b, and the processing unit 403 can be implemented by using the processor 4002, or by using the processor 4002 and the memory 4003.
具体细节,可以参考以上方法中的描述,在此不予赘述。For specific details, reference may be made to the description in the above method, and details are not described herein.
比如,发送单元401,可用于发送M组CSI配置信息给用户设备,其中,M为大于或等于1的整数;For example, the sending unit 401 is configured to send M group CSI configuration information to the user equipment, where M is an integer greater than or equal to 1;
接收单元402,可用于接收来自所述用户设备的对应于所述M组CSI配置信息的M组CSI中的N组CSI,其中N为大于或等于0且不大于M的整数。The receiving unit 402 is configured to receive N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information from the user equipment, where N is an integer greater than or equal to 0 and not greater than M.
如图4b所示,该网络设备可包括:收发器4001、处理器4002和存储器4003。As shown in FIG. 4b, the network device can include a transceiver 4001, a processor 4002, and a memory 4003.
处理器4002用于控制该装置的操作,包括通过收发器4001进行数据的传输(包括接收和/或发送);存储器4003可以包括只读存储器和随机存取存储器,用于向处理器4002提供指令和数据。存储器4003的一部分还可以包括非易失行随机存取存储器(NVRAM)。该装置的各个组件通过总线系统耦合在一起,其中总线系统4009除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图中将各种总线都标为总线系统4009。The processor 4002 is configured to control the operation of the apparatus, including transmitting (including receiving and/or transmitting) data through the transceiver 4001; the memory 4003 may include a read only memory and a random access memory for providing instructions to the processor 4002. And data. A portion of the memory 4003 may also include non-volatile line random access memory (NVRAM). The various components of the apparatus are coupled together by a bus system, wherein the bus system 4009 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 4009 in the figure.
本申请实施例揭示的流程可以应用于处理器4002中,或者由处理器4002实现。在实现过程中,该装置实现的流程的各步骤可以通过处理器4002中的硬件的集成逻辑电路或者软件形式的指令完成。处理器4002可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器4003,处理器4002读取存储器4003中的信息,结合其硬件完成本发明实施例指示流程的步骤。The flow disclosed in the embodiment of the present application may be applied to the processor 4002 or implemented by the processor 4002. In the implementation process, the steps of the process implemented by the device may be completed by the integrated logic circuit of the hardware in the processor 4002 or the instruction in the form of software. The processor 4002 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application. Various methods, steps, and logic blocks of the disclosure. A general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 4003, and the processor 4002 reads the information in the memory 4003, and completes the steps of the instruction flow of the embodiment of the present invention in combination with the hardware thereof.
当所述网络设备为基站时,所述网络设备还可以包括通信接口模块,用于与其他基站或其他网元,如核心网网元的通信。When the network device is a base station, the network device may further include a communication interface module for communicating with other base stations or other network elements, such as a core network element.
本申请实施例还提供一种系统,包括上述的用于CSI反馈的装置和用于CSI获得的装置,该系统可以为一种通信系统,也可以为其他系统。 The embodiment of the present application further provides a system, including the foregoing apparatus for CSI feedback and the apparatus for CSI obtaining, and the system may be a communication system or other systems.
采用本申请实施例中的方法,UE所上报的内容满足门限值要求。UE上报邻区干扰(或邻区信道状态)时,只有满足门限要求的才会被上报,因此UE通过门限值辅助判断了邻区干扰(或邻区信道质量)的强弱(或好坏),为本区基站排除了对本服务基站调度无帮助的弱干扰(或为协作传输提供了较佳的协作点的信息)。这一方面降低了反馈开销,另一方面也有利于本服务基站(服务小区所属的基站)更高效执行调度算法。With the method in the embodiment of the present application, the content reported by the UE meets the threshold requirement. When the UE reports the neighboring cell interference (or the neighboring cell channel state), only the threshold is met, so the UE can determine the strength of the neighbor cell interference (or the neighbor cell channel quality) through the threshold value (or good or bad). ), the base station in this area excludes weak interference that does not help the scheduling of the serving base station (or provides better cooperation point information for cooperative transmission). In this aspect, the feedback overhead is reduced, and on the other hand, the serving base station (the base station to which the serving cell belongs) is more efficient to execute the scheduling algorithm.
同时,一个邻区可以上报的最强干扰个数(最佳信道质量的信道个数)是预定义或者预配置的,这规范了UE行为,避免恶意UE出现,并且可以减少UE的反馈量。At the same time, the number of strongest interferences that can be reported in one neighboring cell (the number of channels with the best channel quality) is predefined or pre-configured, which regulates UE behavior, avoids the occurrence of malicious UEs, and can reduce the feedback amount of the UE.
上报的邻区干扰包括UE所测得的至邻区基站的信道RI和PMI,并不包括CQI信息。相比于现有技术中所有测量信息均上报,减少了CQI的反馈开销。The reported neighbor interference includes the channel RI and PMI measured by the UE to the neighboring base station, and does not include the CQI information. Compared with all the measurement information in the prior art, the feedback overhead of the CQI is reduced.
应理解,说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。在本发明的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the embodiment of the present invention. Form any limit.
另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.
应理解,在本申请实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。在本申请实施例中,“A,B,或C中的至少一个”表示从集合(A,B,C)中选出至少一个,如A,B,C,A和B,A和C,B和C,或者,A和B和C等。本申请实施例中的“第一A”“第二A”等描述,仅用于区分多个A,并不用于表达其他含义。It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information. In the embodiment of the present application, "at least one of A, B, or C" means that at least one of the sets (A, B, C), such as A, B, C, A, and B, A and C, is selected. B and C, or, A and B and C, etc. The descriptions of “First A”, “Second A” and the like in the embodiments of the present application are only used to distinguish a plurality of As, and are not used to express other meanings.
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。 Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些收发器、装置或单元的间接耦合或通信连接,也可以是电的,机械的或其它的形式连接。In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some transceivers, devices or units, or an electrical, mechanical or other form of connection.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
另外,在本发明各个实施例中的各功能单元可以集成在一个处理器中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present invention may be integrated into one processor, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本发明可以用硬件实现,或固件实现,或它们的组合方式来实现。当使用软件实现时,可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于:计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如,如果软件是使用同轴电缆、光纤光缆、双绞线、数字STA线(DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的,那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本发明所使用的,盘(Disk)和碟(disc)包括压缩光碟(CD)、激光碟、光碟、数字通用光碟(DVD)、软盘和蓝光光碟,其中盘通常磁性的复制数据,而碟则用激光来光学的复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. By way of example and not limitation, computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital STA line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media. As used in the present invention, a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.
总之,以上所述仅为本发明技术方案的较佳实施例而已,并非用于限定本发明的保护 范围。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the protection of the present invention. range. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器,使得通过该计算机或其他可编程数据处理设备的处理器执行的指令可实现流程图中的一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. The computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or a processor of other programmable data processing device such that instructions executed by a processor of the computer or other programmable data processing device can be implemented in a flowchart The function specified in one or more processes and/or block diagrams in one or more blocks.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图的一个流程或多个流程和/或方框图的一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
尽管已描述了本发明的可选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括可选实施例以及落入本发明范围的所有变更和修改。 Although alternative embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they become aware of the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all alternatives and modifications of the invention.

Claims (23)

  1. 一种信道状态反馈方法,其特征在于,包括:A channel state feedback method, comprising:
    接收来自网络设备的M组信道状态信息(CSI)配置信息,其中,M为大于或等于1的整数;所述M组CSI配置信息中包括对应于用户设备的服务小区的CSI配置信息,或者,所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息;Receiving M group channel state information (CSI) configuration information from the network device, where M is an integer greater than or equal to 1; the M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment, or The CSI configuration information corresponding to the serving cell of the user equipment is not included in the M group CSI configuration information;
    根据所述CSI配置信息反馈对应于所述M组CSI配置信息的M组CSI中的N组CSI,And feeding back N sets of CSIs in the M group CSI corresponding to the M group CSI configuration information according to the CSI configuration information,
    其中,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息时,所述N为大于或等于0且不大于M的整数;或者,When the MSI CSI configuration information includes the CSI configuration information of the serving cell of the user equipment, the N is an integer greater than or equal to 0 and not greater than M; or
    所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息时,N组CSI不包括对应于所述服务小区的CSI配置信息的CSI且所述N为大于或等于0且不大于M的整数。When the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M-group CSI configuration information, the N-group CSI does not include the CSI corresponding to the CSI configuration information of the serving cell, and the N is greater than or equal to 0 and an integer not greater than M.
  2. 根据权利要求1所述的方法,其特征在于,还包括:The method of claim 1 further comprising:
    反馈指示信息,所述指示信息用于指示所述用户设备所反馈的N组CSI所对应的N组CSI配置信息。And the indication information is used to indicate the N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment.
  3. 根据权利要求1或2所述的方法,其特征在于,还包括,接收来自所述网络设备的指示每组CSI的类型的信息。The method of claim 1 or 2, further comprising receiving information from the network device indicating a type of CSI for each group.
  4. 根据权利要求1-3所述的方法,其特征在于,还包括,接收来自所述网络设备的指示每组CSI所包括的CSI的个数信息。The method of any of claims 1-3, further comprising receiving, from the network device, information indicating the number of CSIs included in each group of CSIs.
  5. 一种信道状态反馈的方法,其特征在于,包括A method for channel state feedback, characterized in that
    向用户设备发送M组信道状态信息(CSI)配置信息,其中,M为大于或等于1的整数;所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息,或者,所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息;Sending M group channel state information (CSI) configuration information to the user equipment, where M is an integer greater than or equal to 1; the M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment, or The CSI configuration information corresponding to the serving cell of the user equipment is not included in the M group CSI configuration information;
    接收来自所述用户设备的对应于所述M组CSI配置信息的M组CSI中的N组CSI,Receiving N sets of CSIs in the M sets of CSIs corresponding to the M sets of CSI configuration information from the user equipment,
    其中,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息时,所述N为大于或等于1且不大于M的整数;或者,Wherein, when the M group CSI configuration information includes the CSI configuration information of the serving cell of the user equipment, the N is an integer greater than or equal to 1 and not greater than M; or
    所述M组CSI配置信息中不包括对应于所述用户设备的服务小区的CSI配置信息时,N组CSI不包括对应于所述服务小区的CSI配置信息的CSI且所述N为大于或等于0且不大于M的整数。When the CSI configuration information corresponding to the serving cell of the user equipment is not included in the M-group CSI configuration information, the N-group CSI does not include the CSI corresponding to the CSI configuration information of the serving cell, and the N is greater than or equal to 0 and an integer not greater than M.
  6. 根据权利要求5所述的方法,其特征在于,还包括:The method of claim 5, further comprising:
    接收来自用户设备的指示信息,所述指示信息用于指示所述用户设备所反馈的N组CSI所对应的N组CSI配置信息。Receiving indication information from the user equipment, where the indication information is used to indicate N sets of CSI configuration information corresponding to the N sets of CSIs fed back by the user equipment.
  7. 根据权利要求5或6所述的方法,其特征在于,还包括,向所述用户设备发送指示每组CSI的类型的信息。The method according to claim 5 or 6, further comprising transmitting information indicating the type of each group of CSIs to the user equipment.
  8. 根据权利要求5-7所述的方法,其特征在于,还包括,向所述用户设备发送指示每组CSI所包括的CSI的个数信息。The method according to any of claims 5-7, further comprising transmitting, to the user equipment, information indicating the number of CSIs included in each group of CSIs.
  9. 根据权利要求3或4,或,7或8所述的方法,其特征在于,所述每组CSI的类型包括秩指示(RI)和/或预编码矩阵信息(PMI),或者, The method according to claim 3 or 4, or 7, or 8, wherein the type of each group of CSIs includes a rank indication (RI) and/or precoding matrix information (PMI), or
    每组CSI的类型包括信道质量信息(CQI),和,秩指示和/或预编码矩阵信息。The types of CSI for each group include channel quality information (CQI), and, rank indication and/or precoding matrix information.
  10. 根据权利要求2-4或6-9所述的方法,其特征在于,所述指示信息包括M组比特,每组比特包括至少1个比特,且每组比特指示所述M组CSI配置信息中的一组CSI配置信息所对应的CSI是否被所述用户设备反馈。The method according to claim 2-4 or 6-9, wherein the indication information comprises M sets of bits, each set of bits comprises at least 1 bit, and each set of bits indicates the M sets of CSI configuration information. Whether the CSI corresponding to a set of CSI configuration information is fed back by the user equipment.
  11. 根据权利要求2-4或6-9所述的方法,其特征在于,所述M组CSI配置信息中包括对应于所述用户设备的服务小区的CSI配置信息时,所述指示信息包括M-1组比特,每组比特包括至少1个比特,且每组比特指示所述M组CSI配置信息中除所述服务小区的CSI配置信息外的M-1组CSI配置信息中的一组CSI配置信息所对应的CSI是否被所述用户设备反馈。The method according to claim 2-4 or 6-9, wherein when the M group CSI configuration information includes CSI configuration information corresponding to the serving cell of the user equipment, the indication information includes M- a group of bits, each group of bits including at least 1 bit, and each group of bits indicating a set of CSI configurations in the M-1 group CSI configuration information of the M group of CSI configuration information except the CSI configuration information of the serving cell Whether the CSI corresponding to the information is fed back by the user equipment.
  12. 根据权利要求10所述的方法,其特征在于,所述N组CSI按照预定的顺序进行反馈,所述预定的顺序与所述M组比特的顺序相关;或者,所述N组CSI被携带在对应于M组CSI的M组资源中的N组资源中进行反馈,其中,M组CSI的M组资源的顺序与所述M组比特的顺序相关,所述M组资源中用于携带所述N组CSI之外的资源不用于携带CSI。The method according to claim 10, wherein said N sets of CSIs are fed back in a predetermined order, said predetermined order being related to an order of said M sets of bits; or said N sets of CSIs being carried in Feedback is performed in the N groups of resources in the M group of resources corresponding to the M group of CSIs, wherein the order of the M group resources of the M group of CSIs is related to the order of the M groups of bits, and the M group resources are used to carry the Resources outside the N-group CSI are not used to carry CSI.
  13. 根据权利要求11所述的方法,其特征在于,所述N组CSI按照预定的顺序进行反馈,所述预定的顺序与所述M-1组比特的顺序相关;或者,所述N组CSI被携带在对应于M-1组CSI的M-1组资源中的N组资源中进行反馈,其中,M-1组CSI的M-1组资源的顺序与所述M-1组比特的顺序相关,所述M-1组资源中用于携带所述N组CSI之外的资源不用于携带CSI。The method according to claim 11, wherein the N sets of CSIs are fed back in a predetermined order, the predetermined order being related to the order of the M-1 group bits; or the N sets of CSIs being Feedback is carried out in N groups of resources in the M-1 group resource corresponding to the M-1 group CSI, wherein the order of the M-1 group resources of the M-1 group CSI is related to the order of the M-1 group bits The resources for carrying the N sets of CSIs in the M-1 group resources are not used for carrying CSI.
  14. 根据权利要求10-13任意一项所述的方法,其特征在于,每组比特的值指示对应的CSI配置信息所对应的一组CSI中CSI的个数。The method according to any one of claims 10-13, wherein the value of each group of bits indicates the number of CSIs in a group of CSIs corresponding to the corresponding CSI configuration information.
  15. 根据权利要求14所述的方法,其特征在于,所述CSI的个数根据每组CSI配置信息所需反馈的CSI的个数确定,所述每组CSI配置信息所需反馈的CSI的个数为预定义的,或,通过高层信令或者物理层信令配置的。The method according to claim 14, wherein the number of CSIs is determined according to the number of CSIs that are required to be fed back by each group of CSI configuration information, and the number of CSIs that are required to be fed back by each group of CSI configuration information It is pre-defined, or configured by higher layer signaling or physical layer signaling.
  16. 根据权利要求2-4或6-9所述的方法,其特征在于,所述指示信息包括与所述N组CSI中的每一组CSI所对应的每组CSI配置信息的标识信息。The method according to claim 2-4 or 6-9, wherein the indication information includes identification information of each group of CSI configuration information corresponding to each group of CSIs in the N sets of CSIs.
  17. 根据权利要求16所述的方法,其特征在于,所述N组CSI的反馈顺序与所对应的N组CSI配置信息的标识信息的顺序相关。The method according to claim 16, wherein the feedback order of the N sets of CSIs is related to the order of the identification information of the corresponding N sets of CSI configuration information.
  18. 根据权利要求1-4,或,9-17所述的方法,其特征在于,根据所述CSI配置信息反馈对应于所述M组CSI配置信息的M组CSI中的N组CSI,包括:The method according to any one of claims 1-4, or 9-17, wherein: the N sets of CSIs in the M sets of CSIs corresponding to the M sets of CSI configuration information are fed back according to the CSI configuration information, including:
    根据所述M组CSI配置信息获得对应的M组CSI,根据确定的原则确定并反馈所述M组CSI中的N组CSI。Obtaining corresponding M group CSIs according to the M group CSI configuration information, and determining and feeding back N sets of CSIs in the M group CSI according to the determined principle.
  19. 根据权利要求1-18所述的方法,其特征在于,所述每组CSI的类型相同或不同,所述CSI的类型指示所述每组CSI包括RI,全带或子带PMI,或CQI中的一个或多个的组合。The method according to any one of claims 1 to 18, wherein the types of the CSIs are the same or different, and the type of the CSI indicates that each group of CSIs includes an RI, a full-band or a sub-band PMI, or a CQI. One or more combinations.
  20. 根据权利要求19所述的方法,其特征在于,所述指示每组CSI的类型的信息承载在所述CSI配置信息中。The method according to claim 19, wherein the information indicating the type of each group of CSIs is carried in the CSI configuration information.
  21. 一种信道状态反馈的装置,其特征在于,包括收发器、处理器和存储器, A device for channel state feedback, comprising: a transceiver, a processor and a memory,
    所述存储器用于存储指令,所述处理器用于执行所述存储器存储的指令,以控制收发器进行信号的接收和发送,当处理器执行所述存储器存储的指令时,所述装置用于完成如权利要求1至20任意一项所述的方法。The memory is configured to store instructions, the processor is configured to execute the memory stored instructions to control transceivers to receive and transmit signals, and when the processor executes the memory stored instructions, the apparatus is configured to complete A method as claimed in any one of claims 1 to 20.
  22. 一种通信装置,其特征在于,用于执行如权利要求1-20任意一项所述的方法。A communication device for performing the method of any of claims 1-20.
  23. 一种计算机可读存储介质,包括计算机程序,当其在计算机上运行时,使得如权利要求1至20任意一项所述的方法被执行。 A computer readable storage medium comprising a computer program, when executed on a computer, causes the method of any one of claims 1 to 20 to be performed.
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