CN114762449B - Method, device, terminal and storage medium for reporting channel state information - Google Patents
Method, device, terminal and storage medium for reporting channel state information Download PDFInfo
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Abstract
The application discloses a method, a device, a terminal and a storage medium for reporting channel state information, and relates to the field of wireless communication. The method comprises the following steps: determining whether to report the CSI according to whether the measured CSI reference signal is positioned in the activation period of the first DRX group; reporting the CSI on the time domain position of the second DRX group under the condition that the CSI is determined to be reported; wherein the first DRX group is one of the at least two DRX groups and the second DRX group is the other of the at least two DRX groups. When the terminal equipment is configured with at least two DRX groups, the terminal equipment can determine whether to report the CSI according to whether the measured CSI reference signal is positioned at ACTIVE TIME, so that the accuracy of transmission is ensured.
Description
Technical Field
The present application relates to the field of wireless communications, and in particular, to a method, an apparatus, a terminal, and a storage medium for reporting channel state information.
Background
In a New air interface (NR) of 5G, the network device may configure a discontinuous reception (Discontinuous Reception, DRX) function for the terminal device. And the terminal equipment can report channel state Information (CHANNEL STATE Information, CSI) in the DRX active time (ACTIVE TIME) so that the network equipment can acquire the channel condition and the interference condition of downlink transmission.
Before reporting the CSI, the terminal device needs to measure the downlink transmission channel through a CSI reference signal (CSI-RS). To enhance DRX, NR Rel-16 discusses by: for one media access Control (MEDIA ACCESS Control, MAC) entity, the configuration of one DRX group (group) is changed to the configuration of two DRX groups. Each DRX group has its corresponding active period (ACTIVE TIME), and each DRX group may correspond to one or more carriers (carriers).
For the configuration of the two DRX groups, the carrier on which the CSI is reported and the measured carrier may be located in different DRX groups, and whether the two carriers are in the active period is also different. For the problem that whether the terminal equipment needs to report the CSI, the related art has not provided a better solution.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal and a storage medium for reporting channel state information, wherein when terminal equipment is configured with at least two DRX groups, the terminal equipment can determine whether to report CSI according to whether a measured CSI reference signal is positioned in an activation period or not. The technical scheme is as follows.
According to an aspect of the present application, there is provided a method for reporting channel state information, applied to a terminal device, where the terminal device is configured with at least two DRX groups, the method including:
Determining whether to report the CSI according to whether the measured CSI reference signal is positioned in the activation period of the first DRX group;
reporting the CSI on the time domain position of the second DRX group under the condition that the CSI is determined to be reported;
Wherein the first DRX group is one of the at least two DRX groups and the second DRX group is the other of the at least two DRX groups.
According to an aspect of the present application, there is provided a reporting apparatus of channel state information, applied to a terminal device, where the terminal device is configured with at least two DRX groups, the apparatus includes: a determining module and a reporting module;
The determining module is configured to determine whether to report the CSI according to whether the measured CSI reference signal is located in the activation period of the first DRX group;
The reporting module is configured to report the CSI at a time domain position of a second DRX group under the condition that the CSI is determined to be reported;
Wherein the first DRX group is one of the at least two DRX groups and the second DRX group is the other of the at least two DRX groups.
According to an aspect of the present application, there is provided a terminal including: a processor; a transceiver coupled to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for reporting channel state information as described in the above aspect.
According to an aspect of the present application, there is provided a computer readable storage medium having stored therein executable instructions loaded and executed by a processor to implement a method of reporting channel state information as described in the above aspect.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
When the terminal equipment is configured with at least two DRX groups, the terminal equipment can determine whether to report the CSI according to whether the measured CSI reference signal is at ACTIVE TIME, so that the terminal equipment can report the CSI effectively according to the method, the situation that the terminal equipment cannot judge whether to report the CSI because the measured CSI and the reported CSI are in different DRX groups is avoided, and the transmission accuracy is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a DRX cycle;
fig. 2 is a schematic diagram of a DRX cycle;
FIG. 3 is a block diagram of a communication system provided by an exemplary embodiment of the present application;
fig. 4 is a flowchart of a method for reporting channel state information according to an exemplary embodiment of the present application;
fig. 5 is a flowchart of a method for reporting channel state information according to an exemplary embodiment of the present application;
FIG. 6 is a diagram of reporting channel state information provided by an exemplary embodiment of the present application;
fig. 7 is a flowchart of a method for reporting channel state information according to an exemplary embodiment of the present application;
FIG. 8 is a diagram of reporting channel state information provided by an exemplary embodiment of the present application;
fig. 9 is a block diagram of a reporting apparatus for channel state information according to an exemplary embodiment of the present application;
Fig. 10 is a schematic structural view of a terminal according to an exemplary embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
First, the terms involved in the embodiments of the present application will be briefly described:
Channel state Information (CHANNEL STATE Information, CSI): is a channel attribute of a communication link. It describes the attenuation factor of the signal on each transmission path, i.e. the value of each element in the channel gain matrix H, such as signal Scattering (Scattering), environmental attenuation (coding, multipath fading or shadowing fading), distance attenuation (power decay of distance), etc. The CSI may adapt the communication system to the current channel conditions, providing a guarantee for high reliability and high rate communication in a multi-antenna system.
Discontinuous reception (Discontinuous Reception, DRX): the DRX may allow the terminal to periodically enter a sleep period at some time without listening to the physical downlink control channel (Physical Downlink Control Channel, PDCCH) scheduling information (or PDCCH subframe). When the terminal needs to monitor the PDCCH scheduling information, the terminal wakes up (wake up) from the sleep period, so that the terminal can achieve the purpose of saving electricity.
The basic mechanism of DRX is to configure a DRX cycle (DRX cycle) for a terminal in a radio resource control CONNECTED state (Radio Resource Control _connected). The DRX cycle consists of an "On Duration" and a "sleep state (Opportunity for DRX)": in the time of the 'activation state', the terminal monitors and receives PDCCH scheduling information; in the "sleep state" time, the terminal does not receive the data of the downlink channel to save power consumption. As can be seen from fig. 1, in the time domain, time is divided into successive DRX cycles (cycles). When the terminal receives a scheduling message during the "active state", the terminal starts a DRX inactivity timer (DRX-INACTIVITY TIMER) and listens for PDCCH scheduling information every subframe during the period; if DRX-INACTIVITY TIMER is running, the terminal still needs to continue listening to the downlink PDCCH subframes until the timeout of DRX-INACTIVITY TIMER even though the originally configured On Duration has ended.
The DRX cycle is equal to the sum of the wake-up time and the sleep time of the terminal, where the wake-up time is the duration of the active state in one cycle, and the sleep time is the duration of the sleep period in one cycle. In a communication system, the system may configure a terminal with a short cycle (short cycle) or a long cycle (long cycle) according to different service scenarios, as shown in fig. 2. The sleep period of the long period is longer than that of the short period, or the sleep period of the long period is larger than that of the short period. After the DRX inactivity timer times out, if the terminal is configured with a short period, the terminal enters the short period, otherwise, the terminal enters a long period. For the scenario where a short period is configured, after the DRX inactivity timer times out, the terminal enters the short period usually because the network sends a large packet and then sends a series of small packets, such as non-real-time traffic like web browsing, and downloads a main page followed by downloading a series of small objects. And thus can be considered a high activity state for short periods.
Fig. 3 shows a block diagram of a communication system provided by an exemplary embodiment of the present application, which may include: access network 12 and terminal equipment 14.
Access network 12 includes a number of network devices 120 therein. The network device 120 may be a base station, which is a means deployed in an access network to provide wireless communication functionality for terminals. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of base station capable devices may vary, for example in LTE systems, called enodebs or enbs; in the 5G NR-U system, it is called gNodeB or gNB. As communication technology evolves, the description of "base station" may change. For convenience, the above-described devices for providing the terminal device 14 with the wireless communication function are collectively referred to as network devices.
The terminal device 14 may include various handheld devices, vehicle mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile Stations (MSs), terminals (TERMINAL DEVICE), and the like, having wireless communication capabilities. For convenience of description, the above-mentioned devices are collectively referred to as a terminal. The network device 120 and the terminal device 14 communicate with each other via some air interface technology, e.g. Uu interface.
The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile Communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general Packet Radio Service (GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, long term evolution advanced (Advanced long Term Evolution, LTE-a) system, new Radio (NR) system, NR system evolution system, LTE on unlicensed band (LTE-based access to Unlicensed spectrum, LTE-U) system, NR-U system, universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), global interconnect microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication system, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (WIRELESS FIDELITY, WIFI), next generation communication system or other communication system, and the like.
Generally, the number of connections supported by the conventional Communication system is limited and easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-machine (Machine to Machine, M2M) Communication, machine type Communication (MACHINE TYPE Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) Communication, and internet of vehicles (Vehicle to Everything, V2X) systems. The embodiments of the present application may also be applied to these communication systems.
Fig. 4 is a flowchart illustrating a method for reporting channel state information according to an exemplary embodiment of the present application, which may be applied to the terminal device shown in fig. 3. The method comprises the following steps:
Step 410, determining whether to report CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group;
The network device can configure the DRX function for the terminal device, so that the terminal device discontinuously monitors the PDCCH, and the purpose of saving the electric quantity of the terminal device is achieved.
In the DRX mode, the network device configures a DRX period for the terminal device, wherein the DRX period comprises an active period (ACTIVE TIME) and an inactive period, the terminal device monitors and receives the PDCCH in the active period, and the terminal device enters a dormant state in the inactive period and does not monitor the PDCCH to reduce the power consumption of the terminal device.
In a carrier aggregation (Carrier Aggregation, CA) scenario, a terminal device may be configured with at least two DRX groups, i.e., for one MAC entity, at least two DRX groups. The first DRX group is one of at least two DRX groups.
Optionally, in the CA scenario, there is one primary Cell (PRIMARY CELL, PCELL) and at least one Secondary Cell (SCell), and the DRX group a is configured by default to all serving cells. The network device may configure SCell2, SCell3, SCell4 DRX group b in SCell, in which case DRX parameters of SCell2, SCell3, SCell4 employ parameters of DRX group b, and DRX parameters of other serving cells such as PCell and SCelll employ parameters of DRX group a. For example, when the terminal device measures CSI on one serving cell of SCell2, SCell3, and SCell4, that is, when the CSI reference signal is configured on one serving cell of SCell2, SCell3, and SCell4, the terminal device will use the DRX parameter corresponding to DRX group b to perform CSI measurement, that is, the first DRX group is DRX group b. For example, when the terminal device measures CSI on the PCell or SCell1, i.e., when the CSI reference signal is configured on the PCell or SCell1, the terminal device will use the DRX parameters corresponding to the DRX group a to perform CSI measurement, i.e., the first DRX group is the DRX group a. The PCell and SCell1-SCell4 are serving cells configured by the terminal device.
In the above example, the physical resource of the terminal device reporting CSI may use the serving cell (SERVING CELL) associated with the DRX group a, or may use the secondary cell (SCell) associated with the DRX group b. The present embodiment is directed to the case that: and the terminal equipment reports the SCell associated with the second DRX group adopted by the CSI, and the first DRX group corresponding to the serving cell for measuring the CSI is a different DRX group. That is, the present embodiment is directed to the case that: the first DRX group is a DRX group b, and the second DRX is a DRX group a; or, the first DRX group is DRX group a and the second DRX is DRX group b.
And the terminal equipment uses the DRX parameters corresponding to the first DRX group to perform CSI measurement on the time domain position of the first DRX group. Illustratively, the CSI reference signal is configured in a serving cell that employs DRX parameters corresponding to the first DRX group.
Optionally, the terminal device can receive CSI reference signals for estimating the channel from the network device, calculate CSI, and report CSI to the network device. The terminal device measuring CSI may include: the terminal device receives the CSI reference signal, and the terminal device calculates CSI based on the received CSI reference signal.
It should be noted that, the terminal device may perform CSI measurement during the active period of the first DRX group, or may perform CSI measurement during the inactive period of the first DRX group. The terminal device may determine whether to report CSI according to whether the time domain position for CSI measurement is located in the active period or the inactive period of the first DRX group.
Optionally, the active period of the terminal device in the DRX mode includes the following cases:
1. The duration timer DRX-onduration timer for discontinuous reception, the inactivity timer DRX-inactivity timer for discontinuous reception, the downlink retransmission timer for discontinuous reception DRX-RetransmissionTimerDL, the uplink retransmission timer for discontinuous reception DRX-RetransmissionTimerUL, and any one of the 5 timers of random access-contention resolution timer RA-ContentionResolutionTimer are running.
2. The terminal device sends a scheduling request (Scheduling Request, SR) on a physical uplink control channel (Physical Uplink Control Channel, PUCCH), and the SR is currently in a pending (pending) state.
3. In the contention-based random access procedure, the terminal device has not received one initial transmission of a Cell radio network temporary identity (Cell-Radio Network Temporary Identifier, C-RNTI) scrambled PDCCH indication after successful reception of the random access response.
Optionally, with respect to the start of the DRX-onDuration Timer, the terminal device decides the time to start the Timer according to whether it is currently in a short DRX cycle (short DRX cycle) or a long DRX cycle (long DRX cycle).
Case one: currently in a short DRX cycle.
The current subframe satisfies [ (sfn×10) +subframe number ] module (DRX-ShortCycle) = (DRX-StartOffset) module (DRX-ShortCycle), then the terminal device starts DRX-onduration timer at a time after DRX-SlotOffset slots (slots) of the current subframe start.
Wherein, SFN is a system frame Number (SYSTEM FRAME Number), subframe Number is a subframe Number of the current subframe; DRX-ShortCycle is a short DRX cycle; DRX-StartOffset is the subframe offset at the beginning of the DRX cycle.
And a second case: currently in a long DRX cycle.
The current subframe satisfies [ (sfn×10) +subframe number ] module (DRX-LongCycle) =drx-StartOffset), and the terminal device starts the DRX-onDuration Timer at a time after the DRX-SlotOffset slots (slots) at which the current subframe starts.
Wherein, SFN is a system frame Number (SYSTEM FRAME Number), subframe Number is a subframe Number of the current subframe; DRX-Long Cycle is a Long DRX Cycle; DRX-StartOffset is the subframe offset at the beginning of the DRX cycle.
CSI refers to the channel properties of a communication link in the field of wireless communication. The network device may transmit the data signal based on CSI fed back from the terminal device. The CSI may include one or several pieces of information, such as Rank Indicator (RI), precoding matrix Indicator (Pre-coding Matrix Indicator, PMI), channel quality information (Channel Quality Indicator, CQI), CSI reference signal resource Indicator (CSI-RS Resource Indicator, CRI), etc., and the present application does not limit the information included in the CSI.
The CSI may include CQI. The CQI is provided to the network device to provide guidance information about which modulation and coding scheme (Modulation and Coding Scheme, MCS) will be applied when the network device transmits data, in order to facilitate link adaptation. In case there is a high wireless quality communication between the network device and the terminal device, the terminal device may feed back a high CQI value and the network device may transmit data by applying a relatively high modulation order and a low channel coding rate. In the opposite case, the terminal device may feed back a low CQI value and the network device may transmit data by applying a relatively low modulation order and a high channel coding rate.
Illustratively, the CSI includes a PMI. The PMI is provided to the network device to provide guidance regarding which Multiple-Input Multiple-Output (MIMO) precoding scheme to apply when the network device has installed Multiple antennas.
Step 420, reporting CSI at the time domain position of the second DRX group in case that the reporting CSI is determined.
Wherein the second DRX group is another of the at least two DRX groups. The terminal equipment is configured with at least two DRX groups, a carrier wave for measuring the CSI is positioned in a first DRX group, and a carrier wave for reporting the CSI is positioned in a second DRX group.
Optionally, in the CA scenario, DRX group a is configured by default to all serving cells. The network device may configure SCell2, SCell3, SCell4 DRX group b in SCell, in which case DRX parameters of SCell2, SCell3, SCell4 employ parameters of DRX group b, and DRX parameters of other serving cells, such as PCell and SCell1, employ parameters of DRX group a. For example, when the terminal device reports CSI in one serving cell of SCell2, SCell3, and SCell4, the terminal device reports the CSI by using the DRX parameter corresponding to DRX group b, i.e. the second DRX group is DRX group b. For example, when the terminal device reports CSI on PCell or SCell1, the terminal device reports the DRX parameter corresponding to DRX group a, i.e. the second DRX group is DRX group a. The PCell and SCell1-SCell4 are serving cells configured by the terminal device.
In the above example, the physical resource of the terminal device reporting CSI may use the serving cell (SERVING CELL) associated with the DRX group a, or may use the secondary cell (SCell) associated with the DRX group b. The present embodiment is directed to the case that: and the terminal equipment reports the SCell associated with the second DRX group adopted by the CSI, and the first DRX group corresponding to the serving cell for measuring the CSI is a different DRX group. That is, the present embodiment is directed to the case that: the first DRX group is a DRX group b, and the second DRX is a DRX group a; or, the first DRX group is DRX group a and the second DRX is DRX group b.
After the terminal equipment completes the CSI measurement, the measured CSI can be reported on the time domain position of the second DRX group after the fact that the CSI can be reported is confirmed. Optionally, the terminal device reports the CSI at a time domain position of the active period of the second DRX group.
In summary, according to the method provided by the embodiment, when the terminal device is configured with at least two DRX groups, the terminal device can determine whether to report CSI according to whether the measured CSI reference signal is in the active period, so that the terminal device can effectively report CSI according to the method, the situation that the terminal device cannot determine whether to report CSI due to different DRX groups between the measured CSI and the reported CSI is avoided, and the accuracy of transmission is ensured.
Fig. 5 shows a flowchart of a method for reporting channel state information according to an exemplary embodiment of the present application, which may be implemented alone or in combination with the embodiment of fig. 4. In this embodiment, the method includes the following steps:
in step 510, reporting CSI is determined if the CSI reference signal is located within the active period of the first DRX group.
And if the carrier wave for measuring the CSI by the terminal equipment is positioned in the activation period of the first DRX group, the terminal equipment determines to report the CSI to the network equipment.
Step 520, reporting CSI.
Wherein the second DRX group is another of the at least two DRX groups. The terminal equipment is configured with at least two DRX groups, a carrier wave for measuring the CSI is positioned in a first DRX group, and a carrier wave for reporting the CSI is positioned in a second DRX group.
After the terminal equipment completes the CSI measurement, the measured CSI can be reported on the time domain position of the second DRX group or the time domain position of the first DRX group after the terminal equipment determines that the CSI can be reported.
Optionally, two cases exist where the resource reporting CSI is located at the time domain position of the second DRX group:
1. the resource for reporting the CSI is positioned at the time domain position of the activation period of the second DRX group;
and the terminal equipment reports the CSI at the time domain position of the activation period of the second DRX group.
2. The resource for reporting the CSI is positioned at the time domain position of the non-activation period of the second DRX group;
And the terminal equipment can replace the time domain position for reporting the CSI, and report the CSI on the time domain position of the activation period of the first DRX group.
Illustratively, with reference to fig. 6, the terminal device configures two DRX groups: DRX group #1 and DRX group #2. Since different carriers correspond to different DRX groups, it is assumed that DRX group #1 has only one carrier, and DRX group #2 has only one carrier.
For measurement and reporting of CSI, as shown in fig. 6, DRX group #1 is a first DRX group, and DRX group #2 is a second DRX group. And at the reporting time of the periodical/semi-persistent scheduling (CSI), the first carrier for measuring the CSI is in the active period of the DRX group # 1. And reporting the second carrier position of the CSI in the inactive period of the DRX group # 2. Since the CSI reference signal is located in the active period of the first DRX group, the terminal device will report the CSI.
In summary, according to the method provided by the embodiment, when the terminal device is configured with at least two DRX groups, the terminal device can determine whether to report CSI according to whether the measured CSI reference signal is in the active period, so that the terminal device can effectively report CSI according to the method, the situation that the terminal device cannot determine whether to report CSI due to different DRX groups between the measured CSI and the reported CSI is avoided, and the accuracy of transmission is ensured.
According to the method provided by the embodiment, under the condition that the CSI reference signal is located in the activation period, the terminal equipment determines to report the CSI, so that the network equipment can schedule the data of the first carrier wave located in the activation period, and the effectiveness of transmission is improved.
Fig. 7 shows a flowchart of a method for reporting channel state information according to an exemplary embodiment of the present application, which may be implemented alone or in combination with the embodiment of fig. 4 or fig. 5. In this embodiment, the method includes the following steps:
In step 710, in case the CSI reference signal is not located in the active period of the first DRX group, it is determined that CSI is not reported.
And if the carrier wave for measuring the CSI by the terminal equipment is not positioned in the activation period of the first DRX group, the terminal equipment determines that the CSI is not reported to the network equipment.
Optionally, two cases exist where the resource reporting CSI is located at the time domain position of the second DRX group:
1. the resource for reporting the CSI is positioned at the time domain position of the activation period of the second DRX group;
2. The resource for reporting the CSI is positioned at the time domain position of the non-activation period of the second DRX group;
for both cases, the terminal device will not report CSI to the network device.
For example, referring to fig. 8 in combination, the terminal device is configured with two DRX groups: DRX group #1 and DRX group #2. Different carriers correspond to different DRX groups, and it is assumed that DRX group #1 has only one carrier, and DRX group #2 also has only one carrier.
For measurement and reporting of CSI, as shown, DRX group #1 is the second DRX group, and DRX group #2 is the first DRX group. And at the reporting time of the periodical/semi-persistent scheduling CSI, the first carrier for measuring the CSI is in the non-active period of the DRX group#2, and the second carrier for reporting the CSI is in the active period of the DRX group#1. The terminal device will not report the CSI.
In summary, according to the method provided by the embodiment, when the terminal device is configured with at least two DRX groups, the terminal device can determine whether to report CSI according to whether the measured CSI reference signal is in the active period, so that the terminal device can effectively report CSI according to the method, the situation that the terminal device cannot determine whether to report CSI due to different DRX groups between the measured CSI and the reported CSI is avoided, and the accuracy of transmission is ensured.
According to the method provided by the embodiment, under the condition that the CSI reference signal is located in the inactive period, the network equipment cannot schedule data for the first carrier wave which is not located in the active period, the CSI is not reported, and redundant transmission overhead is avoided.
In an alternative embodiment based on the above embodiment, the CSI is aperiodic CSI (Aperiodic CSI); or, CSI is period CSI (Periodic CSI); or, the CSI is Semi-continuous CSI (Semi-PERSISTENT CSI).
Illustratively, the CSI is aperiodic CSI, and the terminal device reports the CSI through a Physical Uplink SHARED CHANNEL, PUSCH (Physical Uplink) resource.
For example, the CSI is periodic CSI, and the terminal device reports the CSI through a physical uplink control channel (Physical Uplink Control Channel, PUCCH) resource.
For example, the CSI is semi-persistent CSI, and the terminal device reports the CSI through PUSCH resources, or PUCCH resources.
In an alternative embodiment based on the above embodiment, the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter; the first DRX parameters include: a first discontinuous reception duration timer DRX-onduration timer and a first discontinuous reception inactivity timer DRX-Inactivitytimer; the second DRX parameters include: a second DRX-ondurationTimer, a second DRX-InactivityTimer;
Wherein the first DRX-ondurationTimer is different from the second DRX-ondurationTimer, and the first DRX-InactyTimer is different from the second DRX-InactyTimer.
Optionally, each DRX group has a set of DRX parameters in a one-to-one correspondence, where the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter.
The DRX parameters are semi-statically configured according to higher layer signaling, and are parameters of each MAC entity. The network device may control the DRX cycle of the terminal by configuring the DRX parameters. Wherein, the DRX parameter may include:
1) The duration timer of discontinuous reception, namely DRX-onduration timer. And the terminal starts the DRX-ondurationTimer in a fixed DRX period, and the terminal equipment monitors the PDCCH in the duration of the timer.
2) Discontinuous reception inactivity timer, namely DRX-inactivity timer. The timer is started or restarted when the terminal successfully decodes a PDCCH, and the PDCCH is scheduled to be transmitted initially, and the terminal equipment monitors the PDCCH within the duration of the timer.
3) The method comprises the steps that a discontinuous reception downlink retransmission timer, namely DRX-RetransmissionTimerDL, is independently maintained by terminal equipment aiming at each downlink HARQ, the terminal determines that the corresponding HARQ process data demodulation fails, the timer is started after the time-out of the DRX-HARQ-RTT-TimerDL, and the terminal monitors PDCCH in the running duration of the timer. The behavior of DRX-HARQ-RTT-TimerDL is described as follows.
4) The uplink retransmission timer of discontinuous reception, namely DRX-RetransmissionTimerUL, is maintained by the terminal device for each uplink HARQ process separately, and is started after the DRX-HARQ-RTT-TimerUL times out, and the terminal device monitors the PDCCH within the running duration of the timer.
5) The long period of discontinuous reception, namely DRX-LongCycle, the timer parameter is used to indicate a long period of discontinuous reception.
6) The timer parameter is used to indicate a short period of discontinuous reception, i.e. DRX-ShortCycle.
7) The discontinuous reception downlink HARQ round trip delay timer, i.e. DRX-HARQ-RTT-TimerDL, is maintained separately for each downlink HARQ process, and is started on the first symbol after the transmission of the HARQ feedback resource, and the terminal device may not need to monitor the PDCCH during the running time of the timer.
8) The discontinuous received uplink HARQ round trip delay timer, i.e. DRX-HARQ-RTT-TimerUL, is maintained separately for each uplink HARQ process, and is started at the first symbol after the terminal device data transmission resource, and the terminal device may not need to monitor the PDCCH during the running duration of the timer.
Optionally, for the first DRX group and the second DRX group, the network device configures a DRX-incavitytimer and a DRX-onduration timer for the 2 DRX groups, respectively, and the remaining DRX parameters are common configuration parameters of the 2 DRX groups.
Fig. 9 is a block diagram of a reporting apparatus for channel state information according to an exemplary embodiment of the present application; the method is applied to the terminal equipment, the terminal equipment is configured with at least two DRX groups, and the device comprises: a determining module 901 and a reporting module 902;
A determining module 901, configured to determine whether to report CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group;
A reporting module 902, configured to report CSI at a time domain position of the second DRX group in case that the reporting of CSI is determined;
Wherein the first DRX group is one of at least two DRX groups and the second DRX group is the other of the at least two DRX groups.
In an optional example, the determining module 901 is configured to determine to report CSI if the CSI reference signal is located within the active period of the first DRX group.
In an alternative example, reporting module 902 is configured to report CSI at a time domain position of an active period of the second DRX group.
In an alternative example, the reporting module 902 is configured to report the CSI at a time domain position of the active period of the first DRX group in case that the resource for reporting the CSI is located in the inactive period of the second DRX group.
In an optional example, the determining module 901 is configured to determine not to report CSI if the CSI reference signal is not located within the active period of the first DRX group.
In an alternative example, the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter; the first DRX parameters include: a first discontinuous reception duration timer DRX-onduration timer and a first discontinuous reception inactivity timer DRX-Inactivitytimer; the second DRX parameters include: a second DRX-ondurationTimer, a second DRX-InactivityTimer; wherein the first DRX-ondurationTimer is different from the second DRX-ondurationTimer, and the first DRX-InactyTimer is different from the second DRX-InactyTimer.
In an alternative example, the CSI is aperiodic CSI; or, the CSI is periodic CSI; or, the CSI is semi-persistent CSI.
Fig. 10 is a schematic structural diagram of a terminal device according to an exemplary embodiment of the present application, where the terminal device includes: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.
The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
The receiver 102 and the transmitter 103 may be implemented as one communication component, which may be a communication chip.
The memory 104 is connected to the processor 101 via a bus 105.
The memory 104 may be used to store at least one instruction that the processor 101 is configured to execute to implement the various steps of the method embodiments described above.
Optionally, the processor 101 is configured to determine whether to report CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group.
Optionally, the transmitter 103 is configured to report CSI at a time domain position of the second DRX group if the CSI is determined to be reported; wherein the first DRX group is one of at least two DRX groups and the second DRX group is the other of the at least two DRX groups.
Optionally, the processor 101 is configured to determine to report CSI if the CSI reference signal is located within an active period of the first DRX group.
Optionally, the transmitter 103 is configured to report CSI at a time domain position of an active period of the second DRX group.
Optionally, the transmitter 103 is configured to report the CSI at a time domain position of the active period of the first DRX group if the resource for reporting the CSI is located in the inactive period of the second DRX group.
Optionally, the processor 101 is configured to determine not to report CSI if the CSI reference signal is not located within the active period of the first DRX group.
Further, the memory 104 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), static ready-access Memory (Static Random Access Memory, SRAM), read-Only Memory (ROM), magnetic Memory, flash Memory, programmable Read-Only Memory (Programmable Read-Only Memory, PROM).
In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction, at least one program, a code set, or an instruction set, where the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by a processor to implement the method for reporting channel state information performed by a terminal device provided in the above respective method embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.
Claims (16)
1. A method for reporting channel state information, which is applied to a terminal device, wherein the terminal device is configured with at least two discontinuous reception DRX groups, the method comprising:
Determining whether to report the CSI according to whether the measured CSI reference signal is positioned in the activation period of the first DRX group;
reporting the CSI on the time domain position of the second DRX group under the condition that the CSI is determined to be reported;
Wherein the first DRX group is one of the at least two DRX groups and the second DRX group is the other of the at least two DRX groups.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
Determining whether to report the CSI according to whether the measured CSI reference signal is located in the activation period of the first DRX group, including:
and determining to report the CSI under the condition that the CSI reference signal is positioned in the activation period of the first DRX group.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises,
Reporting the CSI at the time domain position of the second DRX group includes:
and reporting the CSI at the time domain position of the activation period of the second DRX group.
4. The method according to claim 2, wherein the method further comprises:
and reporting the CSI on the time domain position of the activation period of the first DRX group under the condition that the resource for reporting the CSI is located in the non-activation period of the second DRX group.
5. The method of claim 1, wherein the step of determining the position of the substrate comprises,
Determining whether to report the CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group includes:
And if the CSI reference signal is not located in the activation period of the first DRX group, determining that the CSI is not reported.
6. The method according to any one of claims 1 to 5, wherein the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter;
The first DRX parameter includes: a first discontinuous reception duration timer DRX-onduration timer and a first discontinuous reception inactivity timer DRX-Inactivitytimer;
the second DRX parameters include: a second DRX-ondurationTimer, a second DRX-InactivityTimer;
Wherein the first DRX-onduration timer is different from the second DRX-onduration timer, and the first DRX-Inactivitytimer is different from the second DRX-Inactivitytimer.
7. The method according to any one of claims 1 to 5, wherein,
The CSI is aperiodic CSI;
or, the CSI is periodic CSI;
or, the CSI is semi-persistent CSI.
8. A reporting device of channel state information, which is applied to a terminal device, wherein the terminal device is configured with at least two discontinuous reception DRX groups, and the device comprises: a determining module and a reporting module;
The determining module is configured to determine whether to report the CSI according to whether the measured CSI reference signal is located in an active period of the first DRX group;
The reporting module is configured to report the CSI at a time domain position of a second DRX group under the condition that the CSI is determined to be reported;
Wherein the first DRX group is one of the at least two DRX groups and the second DRX group is the other of the at least two DRX groups.
9. The apparatus of claim 8, wherein the device comprises a plurality of sensors,
The determining module is configured to determine to report the CSI if the CSI reference signal is located within an active time active period of the first DRX group.
10. The apparatus of claim 9, wherein the device comprises a plurality of sensors,
The reporting module is configured to report the CSI at a time domain position of an active period of the second DRX group.
11. The apparatus of claim 9, wherein the apparatus further comprises:
The reporting module is configured to report the CSI at a time domain position of an active period of the first DRX group when a resource for reporting the CSI is located in the inactive period of the second DRX group.
12. The apparatus of claim 8, wherein the device comprises a plurality of sensors,
The determining module is configured to determine not to report the CSI if the CSI reference signal is not located within an active period of the first DRX group.
13. The apparatus according to any of claims 8 to 12, wherein the parameter of the first DRX group is a first DRX parameter and the parameter of the second DRX group is a second DRX parameter;
The first DRX parameter includes: a first discontinuous reception duration timer DRX-onduration timer and a first discontinuous reception inactivity timer DRX-Inactivitytimer;
the second DRX parameters include: a second DRX-ondurationTimer, a second DRX-InactivityTimer;
Wherein the first DRX-onduration timer is different from the second DRX-onduration timer, and the first DRX-Inactivitytimer is different from the second DRX-Inactivitytimer.
14. The device according to any one of claims 8 to 12, wherein,
The CSI is aperiodic CSI;
or, the CSI is periodic CSI;
or, the CSI is semi-persistent CSI.
15. A terminal, the terminal comprising:
A processor;
a transceiver coupled to the processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the method for reporting channel state information according to any of the preceding claims 1 to 7.
16. A computer readable storage medium having stored therein at least one instruction, at least one program, code set, or instruction set, the at least one instruction, the at least one program, the code set, or instruction set being loaded and executed by a processor to implement the method of reporting channel state information as claimed in any one of claims 1 to 7.
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| WO2021208022A1 (en) * | 2020-04-16 | 2021-10-21 | Oppo广东移动通信有限公司 | Beam management methods, electronic devices, and storage media |
| CN116471551A (en) * | 2022-01-11 | 2023-07-21 | 华为技术有限公司 | Communication method and communication device |
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| WO2024060027A1 (en) * | 2022-09-20 | 2024-03-28 | 北京小米移动软件有限公司 | Information processing methods and apparatus, communication device, and storage medium |
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| EP2826316B1 (en) * | 2012-03-16 | 2017-07-19 | Nokia Technologies Oy | Update of timing advance without starting discontinuous reception activity timer |
| US9198071B2 (en) * | 2012-03-19 | 2015-11-24 | Qualcomm Incorporated | Channel state information reference signal configuring and reporting for a coordinated multi-point transmission scheme |
| WO2013162439A2 (en) * | 2012-04-24 | 2013-10-31 | Telefonaktiebolaget L M Ericsson (Publ) | Reducing periodic reporting in discontinuous receive (drx) mode |
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| WO2016121786A1 (en) * | 2015-01-30 | 2016-08-04 | 京セラ株式会社 | Base station, processor and user terminal |
| CN109769309B (en) * | 2017-11-09 | 2021-06-22 | 中国移动通信有限公司研究院 | Discontinuous monitoring method, device and computer readable storage medium |
| US10834777B2 (en) * | 2018-01-11 | 2020-11-10 | Ofinnon, LLC | Discontinuous reception and CSI |
| KR102450978B1 (en) * | 2018-03-28 | 2022-10-05 | 삼성전자 주식회사 | The method of CSI reporting in DRX mode in the next generation wireless communication systems |
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| CN112020891B (en) * | 2018-06-26 | 2022-03-01 | Oppo广东移动通信有限公司 | Method and device for detecting downlink control channel and terminal equipment |
| CN110690947B (en) * | 2018-07-04 | 2022-11-25 | 维沃移动通信有限公司 | Signal processing method and apparatus |
| US11523457B2 (en) * | 2018-07-31 | 2022-12-06 | Qualcomm Incorporated | DRX groups for carrier aggregation |
| WO2020155062A1 (en) * | 2019-01-31 | 2020-08-06 | 北京小米移动软件有限公司 | Method and apparatus for receiving target downlink signal, and device and system |
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