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WO2017166164A1 - 下行物理信道的发送方法、ue和基站 - Google Patents

下行物理信道的发送方法、ue和基站 Download PDF

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Publication number
WO2017166164A1
WO2017166164A1 PCT/CN2016/077988 CN2016077988W WO2017166164A1 WO 2017166164 A1 WO2017166164 A1 WO 2017166164A1 CN 2016077988 W CN2016077988 W CN 2016077988W WO 2017166164 A1 WO2017166164 A1 WO 2017166164A1
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WO
WIPO (PCT)
Prior art keywords
cell
system bandwidth
base station
indication information
transmission location
Prior art date
Application number
PCT/CN2016/077988
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English (en)
French (fr)
Inventor
黄雯雯
赵悦莹
杨利
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
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/077988 priority Critical patent/WO2017166164A1/zh
Publication of WO2017166164A1 publication Critical patent/WO2017166164A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method for transmitting a downlink physical channel, a UE, and a base station.
  • 5G Fifth-generation mobile communication technology
  • RAT radio access technology
  • the hybrid network may also be called a common network.
  • the first phase of 5G development may be based on Long Term Evolution (LTE) technology as the primary RAT, and 5G technology as the secondary RAT.
  • LTE Long Term Evolution
  • 5G technology is only used to transmit user plane data
  • the 5G technology can be jointly scheduled with the LTE technology.
  • 5G technology has a higher working frequency band, and has different waveforms, multiple access methods and delay requirements than LTE technology, and the signal quality is different during transmission.
  • the coverage of the LTE technology may have multiple cells covered by the 5G technology, which is simply referred to as a 5G cell.
  • 5G technology can be used to improve the reliability of data transmission.
  • the 5G RAT can also be independently networked.
  • the same system bandwidth is transmitted through the 5G RAT for different 5G cell base stations.
  • the same system bandwidth may be transmitted through the 5G RAT for different 5G cell base stations. If the same resources are used for different 5G cell base stations, communication between the cells may cause interference.
  • the embodiments of the present invention provide a method for transmitting a downlink physical channel, a UE, and a base station, which can reduce inter-cell interference.
  • a method for transmitting a downlink physical channel includes:
  • the base station adjusts a system bandwidth of a cell managed by the base station when a preset trigger condition is met;
  • the base station sends a downlink physical channel of the cell within the adjusted system bandwidth of the cell.
  • the base station does not use a fixed system bandwidth to transmit the downlink physical channel of the cell, but dynamically adjusts the system bandwidth of the cell, and is within the adjusted system bandwidth of the cell.
  • the downlink physical channel of the cell is transmitted, so that inter-cell interference can be effectively reduced.
  • the base station adjusts the system bandwidth of the cell managed by the base station, and the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station.
  • the base station adjusts the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell, so that the system bandwidth can meet the service volume and/or service priority of the cell. Therefore, the cell service can be smoothly carried out under the premise of reducing inter-cell interference.
  • the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station, including:
  • the base station adjusts, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the time domain; and/or,
  • the base station adjusts, according to the traffic volume and/or service priority of the cell managed by the base station, the system bandwidth of the cell in the frequency domain; and/or,
  • the base station adjusts the system bandwidth of the cell in the airspace according to the traffic volume and/or service priority of the cell managed by the base station.
  • the method for the base station to adjust the system bandwidth of the cell is various, and the system bandwidth of the cell in at least one of the time domain, the frequency domain, and the air domain can be adjusted, so that the appropriate adjusted cell can be selected according to the needs.
  • the way the system is bandwidth.
  • the base station adjusts the system bandwidth of the cell according to the traffic volume and/or service priority of the cell managed by the base station, including:
  • the base station adjusts the system bandwidth of the cell according to the system-wide bandwidth of the cell managed by the base station, the load of the whole system bandwidth, the traffic volume of the cell, and/or the service priority.
  • the above-mentioned system-wide bandwidth load is the use of the entire system bandwidth.
  • the base station can adjust the unused system bandwidth in the whole system bandwidth to the system bandwidth of the cell according to the usage of the whole system bandwidth, thereby further effectively avoiding inter-cell interference.
  • the method further includes:
  • the base station sends a broadcast message of the cell, where the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell.
  • the base station can indicate the system bandwidth of the cell of the user equipment (User Equipment, UE) by sending the broadcast message, so that the UE can implement fast receiving of the downlink physical channel according to the system bandwidth of the cell.
  • User Equipment User Equipment
  • the base station sends the downlink physical channel of the cell in the system bandwidth of the adjusted cell, including:
  • SCH synchronization channel
  • PBCH Physical Broadcast Channel
  • CRS Cell-specific reference signals
  • the base station sends at least one of the SCH and the PBCH of the cell in the system bandwidth of the adjusted cell, including:
  • the base station sends the PBCH of the cell in a second preset transmission position within the adjusted system bandwidth of the cell.
  • the base station sends the SCH or the PBCH of the cell in the system bandwidth of the adjusted cell, which may be in a preset transmission position of the system bandwidth.
  • the base station sends at least one of the SCH and the PBCH of the cell in the system bandwidth of the adjusted cell, including:
  • the base station determines a second transmission location within the adjusted system bandwidth of the cell, and transmits a PBCH of the cell at the second transmission location.
  • the base station sends the SCH or PBCH of the cell within the adjusted system bandwidth of the cell, and can dynamically determine the transmission location of the system bandwidth.
  • the method further includes:
  • the base station sends a broadcast message of the cell, where the broadcast message carries second indication information, where the second indication information is used to indicate the first transmission location; and/or,
  • the method further includes:
  • the base station sends a broadcast message of the cell, where the broadcast message carries a third indication information, where the third indication information is used to indicate the second transmission location.
  • the base station sends the SCH or PBCH of the cell in the system bandwidth of the adjusted cell, and can dynamically determine the transmission location of the system bandwidth, and indicate the corresponding downlink physical of the UE by using a broadcast message.
  • the transmission location of the channel can be seen that, in the embodiment of the present invention, the base station sends the SCH or PBCH of the cell in the system bandwidth of the adjusted cell, and can dynamically determine the transmission location of the system bandwidth, and indicate the corresponding downlink physical of the UE by using a broadcast message. The transmission location of the channel.
  • a method for receiving a downlink physical channel comprising:
  • the UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell.
  • the acquiring, by the UE, the system bandwidth of the cell to which the UE belongs includes:
  • the UE acquires the system bandwidth of the cell to which the UE belongs in the airspace.
  • the acquiring, by the UE, the system bandwidth of the cell to which the UE belongs includes:
  • the UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell, including:
  • the UE receives at least one of a SCH, a PBCH, and a downlink control channel of the cell, and receives a CRS, within the acquired system bandwidth of the cell.
  • the UE receives at least one of the SCH and the PBCH of the cell in the acquired system bandwidth of the cell, including:
  • the UE receives the PBCH at a second preset transmission location within the acquired system bandwidth of the cell.
  • the UE receives at least one of the SCH and the PBCH of the cell in the acquired system bandwidth of the cell, including:
  • a PBCH is received at a second transmission location of the system bandwidth.
  • the embodiment of the present invention provides a base station, where the base station can implement the functions performed by the base station in the foregoing method, and the functions can be implemented by using hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the base station includes a processor and a transceiver configured to support the base station to perform the corresponding functions of the above methods.
  • the transceiver is configured to support communication between the base station and the UE.
  • the base station can also include a memory for coupling with the processor that holds the necessary program instructions and data for the base station.
  • the embodiment of the present invention provides a UE, where the UE can implement the functions performed by the UE in the foregoing method, where the function can be implemented by using hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the UE includes a processor and a transceiver configured to support the UE to perform corresponding functions in the above methods.
  • the transceiver is for supporting communication between the UE and the base station.
  • the UE may also include a memory for coupling with the processor that stores the necessary program instructions and data for the UE.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the UE, including a program designed to perform the above aspects.
  • the base station dynamically adjusts the system bandwidth of each cell, and adopts a fixed system-wide bandwidth manner for multiple cells, so as to avoid interference when performing downlink channel transmission between cells. .
  • FIG. 1 is a schematic diagram of an application scenario of a multi-RAT joint networking of a 5G technology and not sharing stations according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for transmitting a downlink physical channel according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of system bandwidth allocation according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another system bandwidth allocation according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another system bandwidth allocation according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another system bandwidth allocation according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a method for receiving a downlink physical channel according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of a UE according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of another base station according to an embodiment of the present invention.
  • FIG. 11 is a structural diagram of another UE according to an embodiment of the present invention.
  • the method for transmitting and receiving the downlink physical channel provided by the embodiment of the present invention may be applicable to the sending and receiving of the downlink physical channel of any one of the cells of the multiple neighboring first RATs.
  • the applicable scenario may be, but not limited to, the following.
  • scenario 1 is a scenario in which the first RAT is independent of the network, that is, the base station supports only the first RAT, and the base station covers multiple cells by using the first RAT, where the type of the first RAT is not limited, for example, 5G RAT, 4.5G RAT, or 4G RAT;
  • scenario 2 the scenario in which the first RAT and the second RAT are combined and co-located, that is, the base station supports both the first RAT and the second RAT, and the base station passes the A RAT covers a plurality of cells, and these cells are referred to as a first RAT cell, and the base station simultaneously covers a plurality of first RAT cells by using a second RAT;
  • scenario 3 first RAT and first A scenario in which the two RATs are mixed and not shared, that is, a plurality of base stations are provided, and the plurality of base stations include one macro base station and multiple small base stations, wherein the small base station supports only the first RAT, and the macro base station only supports a second
  • FIG. 1 is a schematic diagram of an application scenario of a multi-RAT common networking of a 5G technology and not sharing a station according to an embodiment of the present invention.
  • a macro base station has multiple small base stations, a macro base station, and a user equipment (User Equipment,
  • the communication of the UE uses LTE technology for transmitting control plane data, and the communication between the small base station and the UE uses 5G technology for transmitting user plane data, and the 5G technology can improve the reliability of data transmission.
  • the networking mode shown in FIG. 1 is only an example of the multi-RAT common networking mode in the embodiment of the present invention, and is not used to limit the embodiment of the present invention.
  • the LTE technology shown in FIG. 1 may be used.
  • the common networking mode in which the 5G technology does not share the station can also adopt the common networking mode in which the LTE technology and the 5G technology are co-located.
  • the embodiment of the present invention can be applied to the scenario of the hybrid network of the 5G RAT and the LTE RAT shown in FIG. 1 , and can also be applied to the scenario of the 5G RAT independent networking, and can also be applied to the 4G (LTE) system and the 4.5G system.
  • a scenario in which a 5G RAT and an LTE RAT hybrid network is used is taken as an example for description.
  • one LTE cell includes multiple 5G cells, and each 5G cell uses the same system bandwidth, which may cause interference of signals transmitted between 5G cells.
  • FIG. 2 is a flowchart of a method for transmitting a downlink physical channel according to an embodiment of the present invention, where the method is performed by a base station, where the base station may be a small base station in a common network and not in a co-site scenario, and correspondingly, by the UE Performing reception of a downlink physical channel, where the method includes:
  • Step 201 When the preset trigger condition is met, the base station adjusts a system of the cell managed by the base station. bandwidth.
  • the trigger condition may be a timing trigger condition. For example, the first adjustment of the cell system bandwidth is performed at 0:0:00 every day, and then the cell system bandwidth is adjusted every 5 minutes.
  • the cell is specifically a 5G cell
  • the 5G cell refers to a cell that uses 5G RAT communication between the base station and the UE, and the base station specifically adjusts the 5G cell in step 201.
  • System bandwidth In an example, in a scenario where the 5G RAT and the LTE RAT are mixed, the cell is specifically a 5G cell, and the 5G cell refers to a cell that uses 5G RAT communication between the base station and the UE, and the base station specifically adjusts the 5G cell in step 201. System bandwidth.
  • the system adjusts the system bandwidth of the cell managed by the base station, that is, the system bandwidth of each 5G cell is not fixed. System bandwidth, but the system bandwidth of each 5G cell can be adjusted by the base station.
  • Step 202 The base station sends the downlink physical channel of the cell in the adjusted system bandwidth of the cell.
  • the manner in which the base station adjusts the system bandwidth of the cell managed by the base station in step 201 may be, but is not limited to, the following three types: the base station adjusts the system bandwidth of the cell according to the traffic volume of the cell managed by the base station, for example, When the traffic of the cell is large, a large system bandwidth is allocated to the cell, and when the traffic of the cell is small, a small system bandwidth is allocated to the cell; or the base station according to the service priority of the cell managed by the base station Adjusting the system bandwidth of the cell, for example, when the service transmitted in the cell has a service with a higher service priority, the system allocates a larger system bandwidth, and when the service priority of the service transmitted in the cell is low, The system allocates a smaller system bandwidth to the cell; or the base station adjusts the system bandwidth of the cell according to the traffic volume of the cell managed by the base station and the service priority of the cell, for example, preset traffic, service priority, and Corresponding relationship between system bandwidths, finding the
  • the base station adjusts the system bandwidth of the cell, including: the base station adjusts the system bandwidth of the cell in the time domain; and/or, the base station adjusts the system bandwidth of the cell in the frequency domain; and/or, the base station adjusts the system bandwidth of the cell in the airspace.
  • the base station may adjust at least one of the system bandwidth of the cell in the frequency domain, the time domain, and the air domain, and isolate at least one of the frequency domain, the time domain, and the air domain.
  • the communication between the cells avoids the use of the same system bandwidth between the cells, thereby generating interference, wherein adjusting the system bandwidth in the time domain refers to adjusting the time used by the base station to transmit signals to the UE through the system bandwidth, and passing different times.
  • adjusting the system bandwidth in the frequency domain refers to adjusting the frequency band used by the base station to transmit signals to the UE through the system bandwidth, and adopting different frequency bands.
  • the frequency band isolates the transmission between the base station and the UE of each 5G cell, thereby avoiding interference between the 5G cells;
  • adjusting the system bandwidth in the airspace refers to adjusting the beam used by the base station to transmit signals to the UE through the system bandwidth, and adopting different beams.
  • the beam isolates the transmission between the base station and the UE of each 5G cell, thereby avoiding interference between the 5G cells, and the different beams can be reflected Different beam coverage.
  • the system bandwidth of the cell may be adjusted according to the system-wide bandwidth of the cell, the load of the whole system bandwidth, the traffic volume of the cell, and/or the service priority.
  • the system-wide bandwidth may be a preset system bandwidth of each of the 5G cells, and the load of the system-wide bandwidth may be a state occupied by resources in the entire system bandwidth.
  • each of the components may be periodically adjusted. System bandwidth of 5G cells.
  • the base station further needs to send to the UE in the cell.
  • the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell.
  • the base station may specifically send a broadcast message through the LTE RAT.
  • the base station transmitting the broadcast message in the whole system bandwidth through the LTE RAT facilitates the UE to quickly receive the broadcast message.
  • the base station can determine the size and location of the system bandwidth allocated for the cell based on the size of the full system bandwidth, the load of the full system bandwidth, and the traffic of the cell.
  • the base station may adjust the system bandwidth allocated to the cell according to the traffic volume of the cell. For example, the system bandwidth may be periodically adjusted, or the system bandwidth may be adjusted according to the traffic volume. When the cell traffic is transmitted more, the system bandwidth is increased; otherwise, the system bandwidth can be reduced, as shown in Figure 3-6.
  • the location of the system bandwidth can take into account the load distribution across the entire system bandwidth.
  • the system bandwidth is adjusted in the frequency domain, and the system bandwidth allocated to the cell may be determined according to the correspondence between the preset number of UEs and the system bandwidth or the relationship between the traffic volume and the system bandwidth. Table 2 shows.
  • the system bandwidth includes system bandwidth 1, system bandwidth 2, and system bandwidth 3, wherein system bandwidth 1 and system bandwidth 2 are allocated.
  • the system bandwidth of the appropriate size can be selected in the system bandwidth 3 to be allocated to the cell.
  • the base station may send a broadcast message to the UE of the cell through the LTE RAT.
  • the broadcast message is used to indicate the size and location of the system bandwidth allocated by the base station to the cell.
  • the UE in the cell learns the size and location of the system bandwidth allocated to the cell by receiving the broadcast message.
  • the transmission location of the relevant downlink physical channel also needs to be adjusted accordingly.
  • the resource location occupied by the downlink physical channel in the system bandwidth may be preset, and after the UE learns the system bandwidth allocated by the cell, the downlink physical channel transmission may be determined according to the preset resource location.
  • the base station may also change the transmission location of the downlink physical channel, notify the UE by using a broadcast message sent by the LTE RAT, or the resource block of the UE may be in the determined system bandwidth (resource) Search in block, RB).
  • SCH synchronization channel
  • PBCH physical broadcast channel
  • the downlink control channel is used for transmitting uplink/downlink control signaling.
  • a cell reference signal pilot
  • a channel estimation for the downlink physical channel and the like.
  • At least one downlink channel transmission and common reference signal (cell-specific reference signals) in the SCH, PBCH, and downlink control channels may be performed in the 5G cell according to the system bandwidth allocated for the 5G cell. , CRS) transmission.
  • CRS common reference signal
  • the SCH or PBCH transmission may be performed in the cell through the 5G RAT according to the system bandwidth allocated for the cell and the preset transmission location of the system bandwidth.
  • the transmission position of the SCH or PBCH may be mapped to a position adjacent to the control channel of each subframe or other fixed position, for example, may be fixed to the 0th to 62th RB of the 3rd symbol of each subframe of the system bandwidth; 5G RAT
  • the transmission location of the SCH or PBCH may also vary, its location may be notified to the UE via an LTE broadcast message; or the UE may blindly check in the RB of the current system bandwidth.
  • the transmission location of the SCH or PBCH in the system bandwidth may be determined according to the system bandwidth allocated for the cell; and the SCH or PBCH transmission is performed in the current cell by using the 5G RAT in the determined transmission location of the system bandwidth.
  • the downlink control channel may still be transmitted in the first few symbols of each subframe in time, but In the frequency domain, only the bandwidth of the allocated system is distributed.
  • the CRS also only needs to be mapped to the resource element (RE) of the currently allocated system bandwidth.
  • the size and location of the system bandwidth of the cell can be adjusted periodically or aperiodically, as shown in FIG.
  • the corresponding resource locations of the above physical channels also have corresponding dynamic changes.
  • the system bandwidth of the cell when the system bandwidth of the cell is dynamically adjusted in the time domain, different time segments of the system bandwidth may be allocated to different 5G cells, as shown in FIG. 5 .
  • each channel In the frequency domain, each channel can still be transmitted in the full frequency band; in the time domain, each downlink physical channel only needs to be transmitted in the time period allocated to the current cell.
  • the system bandwidth is used for transmission of 5G cell 1 in time period 1. Therefore, the downlink physical channel of the 5G RAT of cell 1 and the reference pilot need only be transmitted in the interval of time period 1 when When the subsequent time period of the system bandwidth is allocated to other cells, the downlink physical channel of the cell 1 and the reference pilot stop transmitting.
  • the system bandwidth of the current cell is adjusted in the airspace, since the 5G RAT can adopt a multi-beam transmission mode, the system bandwidth can be allocated to different cells according to different beams, and the transmission of each cell is isolated by the beam. So as to avoid interference between beams between cells.
  • the base station may allocate a beam to the cell according to the traffic volume of the cell, or may allocate a beam to the cell by using a random allocation manner, which is not specifically limited in this embodiment of the present invention.
  • cell 1 may use system bandwidth using beams 1-4
  • cell 2 uses system bandwidth using beams 5-7
  • cell 3 may use system bandwidth using beams 8-10.
  • the corresponding downlink physical channel and reference signal of cell 1 need only be transmitted through beams 1-4, and so on.
  • the UE determines the system bandwidth of the cell in order to perform downlink physical channel and reception of the reference channel.
  • FIG. 7 is a flowchart of a method for receiving a downlink physical channel according to an embodiment of the present invention, where a downlink physical channel is transmitted by a small base station in a base station, and a UE performs downlink physical channel reception, where the method includes:
  • Step 701 The UE acquires a system bandwidth of a cell to which the UE belongs.
  • the UE may obtain the system bandwidth of the cell to which the UE belongs in the time domain; and/or acquire the system bandwidth of the cell to which the UE belongs in the frequency domain; and/or obtain the cell to which the UE belongs in the airspace.
  • System bandwidth the UE may receive the broadcast message sent in the cell to which the UE belongs, and obtain the first indication information carried in the broadcast message, where the first indication information indicates the system bandwidth of the cell.
  • the first indication information indicates the size and location of the system bandwidth of the cell, for example, the frequency domain upper limit and the lower frequency domain limit of the system bandwidth, and preset values for the time domain system bandwidth and the airspace system bandwidth that are not indicated.
  • Step 702 The UE receives the downlink physical channel of the cell within the acquired system bandwidth of the cell.
  • the UE receives at least one of the SCH, the PBCH, and the downlink control channel of the cell, and receives the CRS, within the acquired system bandwidth of the cell.
  • the UE receives the SCH at the first preset transmission location within the acquired system bandwidth of the cell; and/or the UE receives the PBCH at the second preset transmission location within the acquired system bandwidth of the cell. .
  • the UE receives the broadcast message sent in the cell, and obtains the second indication information carried in the broadcast message, where the second indication information indicates that the transmission of the SCH is performed in the first transmission location within the acquired system bandwidth of the cell. And/or, obtaining third indication information carried in the broadcast message, the third indication information indicating that the PBCH transmission is performed in the acquired second transmission location within the system bandwidth of the cell; receiving at the first transmission location of the system bandwidth SCH; and/or, receiving the PBCH at a second transmission location of the system bandwidth.
  • the method for receiving the downlink physical channel on the UE side corresponds to the method for transmitting the downlink physical channel on the base station side.
  • the 5G RAT does not use a fixed full bandwidth (including time, frequency domain, beam) communication, but uses a time domain and a frequency domain for each cell covered by the 5G RAT. Or adjusting the system bandwidth on at least one of the airspaces to avoid interference when performing downlink channel transmission between cells.
  • FIG. 8 is a structural diagram of a base station, where the base station is configured to perform a method for transmitting a downlink physical channel according to an embodiment of the present disclosure, where the base station includes:
  • the adjusting unit 801 is configured to adjust a system bandwidth of a cell managed by the base station when a preset trigger condition is met;
  • the sending unit 802 is configured to send a downlink physical channel of the cell within a system bandwidth of the cell that is adjusted by the adjusting unit 801.
  • the adjusting unit 801 is specifically configured to adjust a system bandwidth of the cell according to a traffic volume and/or a service priority of a cell managed by the base station.
  • the adjusting unit 801 is specifically configured to:
  • the adjusting unit 801 is specifically configured to adjust the cell according to a system-wide bandwidth of the cell managed by the base station, a load of the system-wide bandwidth, a traffic volume of the cell, and/or a service priority. System bandwidth.
  • the sending unit 802 is further configured to:
  • the broadcast message carries the first indication information, where the first indication information is used to indicate the system bandwidth of the adjusted cell by the adjustment unit.
  • the sending unit 802 is configured to: send, in the system bandwidth of the cell that is adjusted by the adjusting unit 801, at least one of a SCH, a PBCH, and a downlink control channel of the cell, and send CRS.
  • the sending unit 802 is specifically configured to:
  • the adjusting unit 801 is further configured to determine a first transmission location within the adjusted system bandwidth of the cell;
  • the sending unit 802 is specifically configured to send the SCH of the cell at a first transmission location determined by the adjusting unit 801; and/or,
  • the adjusting unit 801 is further configured to determine a second transmission location within the adjusted system bandwidth of the cell;
  • the sending unit 802 is specifically configured to send the PBCH of the cell at the second transmission location determined by the adjusting unit 801.
  • the sending unit 802 is further configured to:
  • the broadcast message of the cell is sent, where the broadcast message carries the second indication information, and the second indication information Used to indicate the first transmission location; and/or,
  • the broadcast message of the cell is sent, where the broadcast message carries the third indication information, and the third indication information Used to indicate the second transmission location.
  • FIG. 9 is a structural diagram of a UE according to an embodiment of the present invention, where the UE is used to perform the implementation of the present invention.
  • the obtaining unit 901 is configured to acquire a system bandwidth of a cell to which the UE belongs;
  • the receiving unit 902 is configured to receive a downlink physical channel of the cell within a system bandwidth of the cell acquired by the acquiring unit 901.
  • the obtaining unit 901 is specifically configured to:
  • the receiving unit 902 is further configured to receive a broadcast message sent in a cell to which the UE belongs;
  • the acquiring unit 901 is specifically configured to acquire first indication information carried in the broadcast message received by the receiving unit 902, where the first indication information indicates a system bandwidth of the cell.
  • the receiving unit 902 is configured to receive at least one of a SCH, a PBCH, and a downlink control channel of the cell, and receive a CRS, within a system bandwidth of the cell acquired by the acquiring unit 901. .
  • the receiving unit 902 is specifically configured to:
  • the receiving unit 902 is further configured to receive a broadcast message sent in the cell;
  • the acquiring unit 901 is specifically configured to acquire second indication information carried in the broadcast message received by the receiving unit 902, where the second indication information indicates that the transmission of the SCH is within the acquired system bandwidth of the cell. a first transmission location; and/or acquiring third indication information carried in the broadcast message received by the receiving unit 902, where the third indication information indicates that the PBCH transmission is performed within the acquired system bandwidth of the cell Second transmission position;
  • the receiving unit 902 is specifically configured to receive the SCH at a first transmission location of the system bandwidth acquired by the acquiring unit 901; and/or receive the PBCH at a second transmission location of the system bandwidth acquired by the acquiring unit 901.
  • FIG. 10 is a structural diagram of another base station according to an embodiment of the present invention.
  • the base station is configured to perform a method for transmitting a downlink physical channel according to an embodiment of the present invention, where the base station includes: a memory 1001, a processor 1002, and a communication interface 1003.
  • the memory 1001 is configured to store program instructions
  • the processor 1002 is configured to perform the following operations according to the program instructions stored in the memory 1001:
  • the downlink physical channel of the cell is transmitted through the communication interface 1003 within the adjusted system bandwidth of the cell.
  • the processor 1002 performs, according to the program instruction stored in the memory 1001, an operation of adjusting a system bandwidth of a cell managed by the base station, including:
  • the performing, by the processor 1002, the operation of adjusting the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell managed by the base station, according to the program instruction stored in the memory 1001, includes:
  • the processor 1002 is executed according to the program instructions stored in the memory 1001.
  • the operation of adjusting the system bandwidth of the cell according to the traffic volume and/or the service priority of the cell managed by the base station includes:
  • the processor 1002 performs, according to the program instruction stored in the memory 1001, an operation of adjusting a system bandwidth of the cell according to a traffic and/or a service priority of a cell managed by the base station,
  • the processor 1002 is further configured to perform the following operations according to the program instructions stored in the memory 1001:
  • the broadcast message of the cell is sent by the communication interface 1003, where the broadcast message carries the first indication information, where the first indication information is used to indicate the adjusted system bandwidth of the cell.
  • the processor 1002 performs, according to the program instruction stored in the memory 1001, an operation of transmitting, by using the communication interface 1003, a downlink physical channel of the cell, including :
  • the processor 1002 executes, according to the program instruction stored in the memory 1001, within the adjusted system bandwidth of the cell, and sends at least one of the SCH and the PBCH of the cell by using the communication interface 1003.
  • kinds of operations including:
  • the processor 1002 executes, according to the program instruction stored in the memory 1001, within the adjusted system bandwidth of the cell, and sends at least one of the SCH and the PBCH of the cell by using the communication interface 1003.
  • kinds of operations including:
  • Determining a first transmission location within the adjusted system bandwidth of the cell transmitting, by the communication interface 1003, the SCH of the cell at the first transmission location; and/or,
  • Determining a second transmission location within the adjusted system bandwidth of the cell and transmitting, by the communication interface 1003, the PBCH of the cell at the second transmission location.
  • the processor 1002 performs an operation of determining a first transmission location within the adjusted system bandwidth of the cell according to the program instruction stored in the memory 1001, the processor 1002 is further configured to The program instructions stored in the memory 1001 perform the following operations:
  • the communication interface 1003 Transmitting, by the communication interface 1003, a broadcast message of the cell, where the broadcast message carries second indication information, where the second indication information is used to indicate the first transmission location; and/or,
  • the processor 1002 After the processor 1002 performs an operation of determining a second transmission location within the adjusted system bandwidth of the cell according to the program instructions stored in the memory 1001, the processor 1002 is further configured to use the memory 1001 according to the memory 1001.
  • the program instructions stored in it do the following:
  • FIG 11 is a block diagram of another UE according to an embodiment of the present invention.
  • the UE is configured to perform a method for receiving a downlink physical channel according to an embodiment of the present invention.
  • the UE includes: a memory 1101, a processor 1102, and a communication interface 1103.
  • the memory 1101 is configured to store program instructions
  • the processor 1102 is configured to perform the following operations according to the program instructions stored in the memory 1101:
  • the downlink physical channel of the cell is received through the communication interface 1103.
  • the performing, by the processor 1102, an operation of acquiring a system bandwidth of a cell to which the UE belongs according to the program instruction stored in the memory 1101, including:
  • the performing, by the processor 1102, an operation of acquiring a system bandwidth of a cell to which the UE belongs according to the program instruction stored in the memory 1101, including:
  • the processor 1102 is configured to perform, according to the program instruction stored in the memory 1101, the downlink physical channel of the cell, by using the communication interface 1103, in the system bandwidth of the acquired cell, including:
  • the processor 1102 performs, according to the program instruction stored in the memory 1101, at least one of a SCH and a PBCH of the cell by using the communication interface 1103 within a system bandwidth of the acquired cell.
  • Operations including:
  • the PBCH is received through the communication interface 1103 at the second preset transmission location within the acquired system bandwidth of the cell.
  • the processor 1102 performs, according to the program instruction stored in the memory 1101, at least one of a SCH and a PBCH of the cell by using the communication interface 1103 within a system bandwidth of the acquired cell.
  • Operations including:
  • the third indication information indicates Transmitting a PBCH at a second transmission location within the acquired system bandwidth of the cell;
  • a PBCH is received by the communication interface 1103 at a second transmission location of the system bandwidth.
  • Non-transitory medium such as random access memory, read only memory, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc, and any combination thereof.

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Abstract

本发明实施例涉及下行物理信道的发送方法、UE和基站，下行物理信道的发送方法包括：当满足预设的触发条件时，基站调整所述基站管理的小区的系统带宽；所述基站在调整后的所述小区的系统带宽内，发送所述小区的下行物理信道。由上可见，本发明实施例中，基站对于其管理的小区不是采用固定的系统带宽发送该小区的下行物理信道，而是动态调整小区的系统带宽，并在调整后的该小区的系统带宽内，发送该小区的下行物理信道，从而能够有效减少小区间干扰。

Description

下行物理信道的发送方法、UE和基站 技术领域
本发明涉及无线通信领域，尤其涉及下行物理信道的发送方法、UE和基站。
背景技术
第五代移动通信技术(5thGeneration，5G)发展初期的特点是多种无线接入技术(radio access technology，RAT)的共同组网，共同组网也可称为混合组网。例如，为了实现5G的快速部署，5G发展的第一阶段可能以长期演进(Long Term Evolution，LTE)技术为主RAT，5G技术为辅RAT。控制面数据仅通过LTE技术发送，而5G技术仅用于发送用户面数据，5G技术可以和LTE技术进行联合调度。相对LTE技术而言，5G技术的工作频段较高，并且与LTE技术相比有着不同的波形，多址方式和时延等要求，传输过程中信号质量也有所差别。
未来5G技术的多RAT共同组网方式中，LTE技术的覆盖范围内可以有多个5G技术覆盖的小区，简称为5G小区。5G技术可以用于提高数据传输的可靠性。
除了共同组网的场景，5G RAT还可以进行独立组网。共同组网中，针对不同的5G小区基站采用相同的系统带宽通过5G RAT进行传输，独立组网中，针对不同的5G小区基站也可能采用相同的系统带宽通过5G RAT进行传输。如果对于不同的5G小区基站使用相同的资源，这样小区之间的通信会产生干扰。
发明内容
本发明实施例提供了下行物理信道的发送方法、UE和基站，能够减少小区间干扰。
一方面，提供了一种下行物理信道的发送方法，该方法包括：
当满足预设的触发条件时，基站调整所述基站管理的小区的系统带宽；
所述基站在调整后的所述小区的系统带宽内，发送所述小区的下行物理信道。
由上可见，本发明实施例中，基站对于其管理的小区不是采用固定的系统带宽发送该小区的下行物理信道，而是动态调整小区的系统带宽，并在调整后的该小区的系统带宽内，发送该小区的下行物理信道，从而能够有效减少小区间干扰。
在一种可能的设计中，所述基站调整所述基站管理的小区的系统带宽，包括：基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽。
由上可见，本发明实施例中，基站依据小区的业务量和/或业务优先级，调整该小区的系统带宽，从而使得系统带宽的大小能够满足小区的业务量和/或业务优先级的需求，因此能够在减少小区间干扰的前提下使小区业务顺利进行。
在一种可能的设计中，所述基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽，包括：
基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在时域上的系统带宽；和/或，
基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在频域上的系统带宽；和/或，
基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在空域上的系统带宽。
由上可见，本发明实施例中，基站调整小区的系统带宽的方式多样，可以调整小区在时域、频域和空域中至少一个域上的系统带宽，从而可以根据需要选取合适的调整小区的系统带宽的方式。
在一种可能的设计中，所述基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽，包括：
基站根据所述基站管理的小区的全系统带宽、所述全系统带宽的负载、所述小区的业务量和/或业务优先级，调整所述小区的系统带宽。
其中，上述全系统带宽的负载即全系统带宽的使用情况。
由上可见，本发明实施例中，基站可以根据全系统带宽的使用情况将全系统带宽中未使用的系统带宽调整为该小区的系统带宽，从而进一步有效避免小区间干扰。
在一种可能的设计中，所述基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽之后，所述方法还包括：
所述基站发送所述小区的广播消息，所述广播消息中携带第一指示信息，所述第一指示信息用于指示调整后的所述小区的系统带宽。
由上可见，本发明实施例中，基站通过发送广播消息可以指示用户设备(User Equipment,UE)该小区的系统带宽，从而可以使UE能够根据该小区的系统带宽实现下行物理信道的快速接收。
在一种可能的设计中，所述基站在调整后的所述小区的系统带宽内，发送所述小区的下行物理信道，包括：
所述基站在调整后的所述小区的系统带宽内，发送所述小区的同步信道(synchronization channel，SCH)、广播信道(Physical Broadcast Channel，PBCH)、下行控制信道中的至少一种，以及发送公共参考信号(cell-specific reference signals，CRS)。
在一种可能的设计中，所述基站在调整后的所述小区的系统带宽内，发送所述小区的SCH、PBCH中的至少一种，包括：
所述基站在调整后的所述小区的系统带宽内的第一预设传输位置，发送所述小区的SCH；和/或，
所述基站在调整后的所述小区的系统带宽内的第二预设传输位置，发送所述小区的PBCH。
由上可见，本发明实施例中，基站在调整后的所述小区的系统带宽内发送所述小区的SCH或PBCH，可以在系统带宽的预设传输位置。
在一种可能的设计中，所述基站在调整后的所述小区的系统带宽内，发送所述小区的SCH、PBCH中的至少一种，包括：
所述基站确定在调整后的所述小区的系统带宽内的第一传输位置，在所述第一传输位置发送所述小区的SCH；和/或，
所述基站确定在调整后的所述小区的系统带宽内的第二传输位置，在所述第二传输位置发送所述小区的PBCH。
由上可见，本发明实施例中，基站在调整后的所述小区的系统带宽内发送所述小区的SCH或PBCH，可以动态确定在系统带宽的传输位置。
在一种可能的设计中，所述基站确定在调整后的所述小区的系统带宽内的第一传输位置之后，所述方法还包括：
所述基站发送所述小区的广播消息，所述广播消息中携带第二指示信息，所述第二指示信息用于指示所述第一传输位置；和/或，
所述基站确定在调整后的所述小区的系统带宽内的第二传输位置之后，所述方法还包括：
所述基站发送所述小区的广播消息，所述广播消息中携带第三指示信息，所述第三指示信息用于指示所述第二传输位置。
由上可见，本发明实施例中，基站在调整后的所述小区的系统带宽内发送所述小区的SCH或PBCH，可以动态确定在系统带宽的传输位置，并通过广播消息指示UE相应下行物理信道的传输位置。
另一方面，提供了一种下行物理信道的接收方法，该方法包括：
UE获取所述UE归属的小区的系统带宽；
所述UE在获取的所述小区的系统带宽内，接收所述小区的下行物理信道。
在一种可能的设计中，所述UE获取所述UE归属的小区的系统带宽，包括：
UE获取所述UE归属的小区在时域上的系统带宽；和/或，
UE获取所述UE归属的小区在频域上的系统带宽；和/或，
UE获取所述UE归属的小区在空域上的系统带宽。
在一种可能的设计中，所述UE获取所述UE归属的小区的系统带宽，包括：
UE接收所述UE归属的小区内发送的广播消息；
获取所述广播消息中携带的第一指示信息,所述第一指示信息指示了所述小区的系统带宽。
在一种可能的设计中，所述UE在获取的所述小区的系统带宽内，接收所述小区的下行物理信道，包括：
所述UE在获取的所述小区的系统带宽内，接收所述小区的SCH、PBCH、下行控制信道中的至少一种，以及接收CRS。
在一种可能的设计中，所述UE在获取的所述小区的系统带宽内，接收所述小区的SCH、PBCH中的至少一种，包括：
所述UE在获取的所述小区的系统带宽内的第一预设传输位置，接收SCH；和/或，
所述UE在获取的所述小区的系统带宽内的第二预设传输位置，接收PBCH。
在一种可能的设计中，所述UE在获取的所述小区的系统带宽内，接收所述小区的SCH、PBCH中的至少一种，包括：
所述UE接收在所述小区内发送的广播消息；
获取所述广播消息中携带的第二指示信息，所述第二指示信息指示了进 行SCH的传输在获取的所述小区的系统带宽内的第一传输位置；和/或，
获取所述广播消息中携带的第三指示信息，所述第三指示信息指示了进行PBCH的传输在获取的所述小区的系统带宽内的第二传输位置；
在所述系统带宽的第一传输位置接收SCH；和/或，
在所述系统带宽的第二传输位置接收PBCH。
又一方面，本发明实施例提供了一种基站，该基站可以实现上述方法示例中基站所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该基站的结构中包括处理器和收发器，该处理器被配置为支持该基站执行上述方法中相应的功能。该收发器用于支持该基站与UE之间的通信。该基站还可以包括存储器，该存储器用于与处理器耦合，其保存该基站必要的程序指令和数据。
又一方面，本发明实施例提供了一种UE，该UE可以实现上述方法实施例中UE所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该UE的结构中包括处理器和收发器，该处理器被配置为支持该UE执行上述方法中相应的功能。该收发器用于支持该UE与基站之间的通信。该UE还可以包括存储器，该存储器用于与处理器耦合，其保存该UE必要的程序指令和数据。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述基站所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述UE所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
相较于现有技术，本发明提供的方案中，基站动态调整每个小区的系统带宽，相对于多个小区均采用固定的全系统带宽的方式，能够避免小区间进行下行信道传输时的干扰。
附图说明
图1为本发明实施例提供的一种5G技术的多RAT共同组网且不共站的应用场景示意图；
图2为本发明实施例提供的下行物理信道的发送方法流程图；
图3为本发明实施例提供的一种系统带宽分配示意图；
图4为本发明实施例提供的另一种系统带宽分配示意图；
图5为本发明实施例提供的另一种系统带宽分配示意图；
图6为本发明实施例提供的另一种系统带宽分配示意图；
图7为本发明实施例提供的下行物理信道的接收方法流程图；
图8为本发明实施例提供的一种基站结构图；
图9为本发明实施例提供的一种UE结构图；
图10为本发明实施例提供的另一种基站结构图；
图11为本发明实施例提供的另一种UE结构图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
本发明实施例提供的下行物理信道的发送接收方法可以适用于多个相邻的第一RAT覆盖的小区中任一小区的下行物理信道的发送接收，该方法适用的场景可以但不限于为下面的场景：场景一，第一RAT独立组网的场景，也就是说，基站仅支持第一RAT，基站通过第一RAT覆盖多个小区，其中，第一RAT的类型不做限定，例如，可以为5G RAT、4.5G RAT或者4G RAT；场景二，第一RAT与第二RAT混合组网且共站的场景，也就是说，基站既支持第一RAT，也支持第二RAT，基站通过第一RAT覆盖多个小区，这些小区称为第一RAT小区，基站同时通过第二RAT覆盖多个第一RAT小区；场景三，第一RAT与第 二RAT混合组网且不共站的场景，也就是说，设置多个基站，这多个基站中包括一个宏基站和多个小基站，其中，小基站仅支持第一RAT，宏基站仅支持第二RAT，每个小基站通过第一RAT覆盖一个第一RAT小区，宏基站同时通过第二RAT覆盖多个第一RAT小区，其中，第一RAT和第二RAT的类型不做限定，例如，第一RAT可以为5G RAT、第二RAT可以为4G RAT，或者，第一RAT可以为4G RAT、第二RAT可以为5G RAT。
下面结合附图来说明本发明实施例的一种具体的应用场景。
图1为本发明实施例提供的一种5G技术的多RAT共同组网且不共站的应用场景示意图，一个宏基站的覆盖范围内有多个小基站，宏基站与用户设备(User Equipment，UE)的通信采用LTE技术,用于传输控制面数据，小基站与UE的通信采用5G技术，用于传输用户面数据，5G技术可以提高数据传输的可靠性。
其中，图1所示的组网方式仅为对本发明实施例多RAT共同组网方式的举例说明，而不用于对本发明实施例的限定，实际应用中，可以采用图1所示的LTE技术与5G技术不共站的共同组网方式，也可以采用LTE技术与5G技术共站的共同组网方式。
本发明实施例可以应用于图1所示5G RAT与LTE RAT混合组网的场景，也可以应用于5G RAT独立组网的场景，还可以适用于4G(LTE)系统以及4.5G系统。本发明实施例中以5G RAT与LTE RAT混合组网的场景为例进行描述。
通常地，在5G RAT与LTE RAT混合组网的场景中，一个LTE小区内包含多个5G小区，每个5G小区采用相同的系统带宽，这样会导致5G小区之间传输信号的干扰。
图2为本发明实施例提供的下行物理信道的发送方法流程图，其中，该方法由基站执行，该基站具体可以是上述共同组网且不共站场景中的小基站，相应地，由UE进行下行物理信道的接收，所述方法包括：
步骤201，当满足预设的触发条件时，基站调整该基站管理的小区的系统 带宽。
其中，上述触发条件具体可以为定时触发条件，例如，预先设定在每天的0时0分0秒进行小区系统带宽的第一次调整，之后每隔5分钟进行一次小区系统带宽的调整。
在一个示例中，在5G RAT与LTE RAT混合组网的场景下，上述小区具体为5G小区，5G小区指的是基站和UE之间采用5G RAT通信的小区，步骤201中基站具体调整5G小区的系统带宽。
为了避免不同的5G小区之间传输信号的干扰，本发明实施例中，采用了基站调整该基站管理的小区的系统带宽的方式，也就是说，每个5G小区的系统带宽不是采用固定的全系统带宽，而是可以由基站对每个5G小区的系统带宽进行调整。
步骤202，基站在调整后的该小区的系统带宽内，发送该小区的下行物理信道。
本发明实施例中，步骤201中基站调整该基站管理的小区的系统带宽的方式可以但不限于为如下三种：基站根据该基站管理的小区的业务量，调整该小区的系统带宽，例如，当小区的业务量较多时，为该小区分配较大的系统带宽，当小区的业务量较少时，为该小区分配较小的系统带宽；或者，基站根据该基站管理的小区的业务优先级，调整该小区的系统带宽，例如，当小区中传输的业务存在业务优先级较高的业务时，为该小区分配较大的系统带宽，当小区中传输的业务的业务优先级均较低时，为该小区分配较小的系统带宽；或者，基站根据该基站管理的小区的业务量和该小区的业务优先级，调整该小区的系统带宽，例如，预先设定业务量、业务优先级和系统带宽的对应关系，根据小区的业务量和业务优先级查找相应的系统带宽，将该系统带宽确定为该小区的系统带宽，上述对应关系可以如表一所示。
业务量 业务优先级 系统带宽
[0,100) 高 10M
[0,100) 低 5M
[100,200) 高 15M
[100,200) 低 10M
[200,∞) 高 20M
[200,∞) 低 15M
表一
其中，基站调整小区的系统带宽包括：基站调整小区在时域上的系统带宽；和/或，基站调整小区在频域上的系统带宽；和/或，基站调整小区在空域上的系统带宽。
本发明实施例中，为避免小区间的干扰，可以使基站对小区的系统带宽在频域、时域和空域中的至少一个进行调整，通过频域、时域和空域中的至少一个来隔离各小区间的通信，避免各小区间使用相同的系统带宽，从而产生干扰，其中，在时域上调整系统带宽是指调整基站向UE通过该系统带宽传输信号所使用的时间，通过不同的时间隔离各5G小区的基站与UE之间的传输，从而避免各5G小区之间的干扰；在频域上调整系统带宽是指调整基站向UE通过该系统带宽传输信号所使用的频段，通过不同的频段隔离各5G小区的基站与UE之间的传输，从而避免各5G小区之间的干扰；在空域上调整系统带宽是指调整基站向UE通过该系统带宽传输信号所使用的波束，通过不同的波束隔离各5G小区的基站与UE之间的传输，从而避免各5G小区之间的干扰，上述不同的波束可以体现为波束的覆盖范围不同。
本发明实施例中，可以根据小区的全系统带宽、全系统带宽的负载、小区的业务量和/或业务优先级，调整该小区的系统带宽。其中，上述全系统带宽具体可以为预先设定的每个5G小区的系统带宽，上述全系统带宽的负载具体可以为全系统带宽中资源占用的状态，本发明实施例中，可以周期性调整每个5G小区的系统带宽。
可选地，在调整小区的系统带宽之后，基站还需要向该小区内的UE发送 广播消息，该广播消息中携带第一指示信息，第一指示信息用于指示调整后的该小区的系统带宽。其中，在5G RAT与LTE RAT混合组网的场景下，基站具体可以通过LTE RAT发送广播消息。基站通过LTE RAT在全系统带宽中发送广播消息有利于UE快速接收到该广播消息。
在一个示例中，基站可以根据全系统带宽的大小，全系统带宽的负载和小区的业务量，确定为该小区分配的系统带宽的大小和位置。
其中，为了降低小区间干扰，基站可以根据小区的业务量调整为该小区分配的系统带宽的大小，例如，可以周期性调整系统带宽，或者，根据业务量调整系统带宽。当小区业务量传输较多时，增加系统带宽；反之，可以减小系统带宽，如图3-6所示的系统带宽分配示意图。系统带宽的位置可以考虑整个系统带宽上负载分布情况。
以在频域上调整系统带宽为例，可以根据预设的UE数量与系统带宽大小的对应关系或者业务量与系统带宽大小的对应关系，确定分配给小区的系统带宽，上述对应关系具体可以如表二所示。
业务量 系统带宽
[0,100) 5M
[100,200) 10M
[200,∞) 15M
表二
参照表二，假设全系统带宽为20M，小区中的UE数量较少，或者业务量较少，业务量属于区间[0,100)，则可以分配给该小区一个较小的系统带宽(5M)，并根据全系统带宽的负载情况，确定为该小区分配的系统带宽的位置，参照图3，例如，全系统带宽包括系统带宽1、系统带宽2和系统带宽3，其中系统带宽1、系统带宽2分配给其他的5G小区，因此可以在系统带宽3中选取合适大小的系统带宽分配给该小区。
在一个示例中，基站可以通过LTE RAT向该小区的UE发送广播消息，广 播消息用于指示基站为小区分配的系统带宽的大小和位置。该小区内的UE通过接收上述广播消息获知为该小区分配的系统带宽的大小和位置。
由于系统带宽的调整，相关的下行物理信道的传输位置也需要相应调整。
具体地，本发明实施例中，可以预先设定下行物理信道在系统带宽中占用的资源位置，UE在获知为小区分配的系统带宽后，即可根据预设的资源位置确定下行物理信道的传输位置；此外，在基站已确定小区的系统带宽之后，基站也可以改变下行物理信道的传输位置，通过LTE RAT发送的广播消息通知给UE，或者，UE可以在确定的系统带宽的资源块(resource block，RB)中搜索。
其中，本发明实施例涉及的下行物理信道包括：
同步信道(synchronization channel，SCH)，可以用于获得下行同步等；物理广播信道(Physical Broadcast Channel，PBCH)，用于获得小区的系统消息等；
下行控制信道，用于传输上/下行控制信令。
以及小区参考信号(导频)，用于下行物理信道的信道估计等。
本发明实施例中，可以根据为5G小区分配的系统带宽，通过5G RAT在该5G小区内进行SCH、PBCH、下行控制信道中至少一种下行信道的传输和公共参考信号(cell-specific reference signals，CRS)的传输。
具体地，可以根据为小区分配的系统带宽，在系统带宽的预设传输位置，通过5G RAT在该小区内进行SCH或PBCH的传输。
由于UE知道了系统带宽的大小和位置，就不必像LTE技术中那样将SCH和PBCH总是分布在系统带宽的中心频段处。SCH或PBCH的传输位置可以映射在每个子帧的控制信道相邻的位置或者其他固定的位置，例如可以固定在系统带宽的每个子帧第3个符号的第0至62个RB；5G RAT的SCH或PBCH的传输位置也可以变化，其位置可以通过LTE广播消息通知UE；或者UE可以在当前的系统带宽的RB中盲检。
本发明实施例中，可以根据为小区分配的系统带宽，确定SCH或PBCH在系统带宽的传输位置；通过5G RAT在确定出的系统带宽的传输位置，在当前小区内进行SCH或PBCH的传输。
当在频域上对小区的系统带宽进行动态调整时，由于UE解调数据还需要下行的控制信息，所以下行控制信道在时间上可以仍在每个子帧的前几个符号来发送，但在频域上，只需分布在被分配的系统带宽。
CRS也只需映射到当前被分配的系统带宽的资源元素(resource element，RE)上。
小区的系统带宽的大小和位置是可以周期或者非周期进行调整的，如图4所示的系统带宽变化示意图。相应的上述物理信道的资源位置也要随之相应的动态变化。
本发明实施例中，当在时域上对小区的系统带宽进行动态调整时，可以将系统带宽的不同的时间段分配给不同的5G小区，如图5所示。频域上，各信道可以仍然在全频段发送；时域上，各下行物理信道只需在分配给当前小区的时间段内传输。例如，如图5所示，系统带宽在时间段1内用于5G小区1的传输，因此，小区1的5G RAT的下行物理信道以及参考导频只需要在时间段1的区间内传输，当将系统带宽的后续的时间段分配给其他小区时，小区1的下行物理信道以及参考导频停止发送。
当在空域上对当前小区的系统带宽进行调整时，由于5G RAT可以采用通过多波束的传输方式，因此，系统带宽可以按照不同波束分配给不同的小区，通过波束将各小区的传输隔离开来，从而避免小区间波束的干扰。其中，基站在为小区分配波束时，可以根据小区的业务量为该小区分配波束，也可以采用随机分配的方式为该小区分配波束，本发明实施例对此不做具体限定。如图6所示，小区1可以采用波束1-4使用系统带宽，小区2采用波束5-7使用系统带宽，小区3可以采用波束8-10使用系统带宽。小区1相应的下行物理信道以及参考信号也只需要通过波束1-4来传输，其他小区以此类推。
相应地，当小区的系统带宽调整时，UE要确定小区的系统带宽，以便进行下行物理信道以及参考信道的接收。
图7为本发明实施例提供的下行物理信道的接收方法流程图，其中，可以由基站中的小基站进行下行物理信道的发送，UE进行下行物理信道的接收，所述方法包括：
步骤701，UE获取该UE归属的小区的系统带宽。
其中，UE具体可以获取该UE归属的小区在时域上的系统带宽；和/或，获取该UE归属的小区在频域上的系统带宽；和/或，获取该UE归属的小区在空域上的系统带宽。在一个示例中，UE可以接收该UE归属的小区内发送的广播消息；获取广播消息中携带的第一指示信息,第一指示信息指示了该小区的系统带宽。具体地，第一指示信息指示了该小区的系统带宽的大小和位置，例如，系统带宽的频域上限和频域下限，对于不做指示的时域系统带宽和空域系统带宽取预设值。
步骤702，UE在获取的该小区的系统带宽内，接收该小区的下行物理信道。
在一个示例中，UE在获取的该小区的系统带宽内，接收该小区的SCH、PBCH、下行控制信道中的至少一种，以及接收CRS。
在一个示例中，UE在获取的该小区的系统带宽内的第一预设传输位置，接收SCH；和/或，UE在获取的该小区的系统带宽内的第二预设传输位置，接收PBCH。
在一个示例中，UE接收在小区内发送的广播消息；获取广播消息中携带的第二指示信息，第二指示信息指示了进行SCH的传输在获取的该小区的系统带宽内的第一传输位置；和/或，获取广播消息中携带的第三指示信息，第三指示信息指示了进行PBCH的传输在获取的该小区的系统带宽内的第二传输位置；在系统带宽的第一传输位置接收SCH；和/或，在系统带宽的第二传输位置接收PBCH。
由于UE侧的下行物理信道接收方法与基站侧的下行物理信道发送方法相对应，涉及具体细节可参考基站侧实施例的详细描述，在此不做赘述。
相较于现有技术，本发明提供的方案中，5G RAT不是采用固定的全带宽(包括时间，频域，波束)通信，而是针对5G RAT覆盖的每个小区采用在时域、频域或空域中的至少一项上调整系统带宽的方式，避免小区间进行下行信道传输时的干扰。
图8为本发明实施例提供的一种基站结构图，该基站用于执行本发明实施例提供的下行物理信道的发送方法，所述基站包括：
调整单元801，用于在满足预设的触发条件时，调整所述基站管理的小区的系统带宽；
发送单元802，用于在所述调整单元801调整后的所述小区的系统带宽内，发送所述小区的下行物理信道。
可选地，所述调整单元801，具体用于根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽。
可选地，所述调整单元801，具体用于：
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在时域上的系统带宽；和/或，
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在频域上的系统带宽；和/或，
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在空域上的系统带宽。
可选地，所述调整单元801，具体用于根据所述基站管理的小区的全系统带宽、所述全系统带宽的负载、所述小区的业务量和/或业务优先级，调整所述小区的系统带宽。
可选地，所述发送单元802还用于：
在所述调整单元801调整所述小区的系统带宽之后，发送所述小区的广 播消息，所述广播消息中携带第一指示信息，所述第一指示信息用于指示所述调整单元调整后的所述小区的系统带宽。
可选地，所述发送单元802，具体用于在所述调整单元801调整后的所述小区的系统带宽内，发送所述小区的SCH、PBCH、下行控制信道中的至少一种，以及发送CRS。
可选地，所述发送单元802，具体用于：
在所述调整单元801调整后的所述小区的系统带宽内的第一预设传输位置，发送所述小区的SCH；和/或，
在所述调整单元801调整后的所述小区的系统带宽内的第二预设传输位置，发送所述小区的PBCH。
可选地，所述调整单元801，还用于确定在调整后的所述小区的系统带宽内的第一传输位置；
所述发送单元802，具体用于在所述调整单元801确定的第一传输位置发送所述小区的SCH；和/或，
所述调整单元801，还用于确定在调整后的所述小区的系统带宽内的第二传输位置；
所述发送单元802，具体用于在所述调整单元801确定的第二传输位置发送所述小区的PBCH。
可选地，所述发送单元802还用于：
在所述调整单元801确定在调整后的所述小区的系统带宽内的第一传输位置之后，发送所述小区的广播消息，所述广播消息中携带第二指示信息，所述第二指示信息用于指示所述第一传输位置；和/或，
在所述调整单元801确定在调整后的所述小区的系统带宽内的第二传输位置之后，发送所述小区的广播消息，所述广播消息中携带第三指示信息，所述第三指示信息用于指示所述第二传输位置。
图9为本发明实施例提供的一种UE结构图，该UE用于执行本发明实施 例提供的下行物理信道的接收方法，所述UE包括：
获取单元901，用于获取所述UE归属的小区的系统带宽；
接收单元902，用于在所述获取单元901获取的所述小区的系统带宽内，接收所述小区的下行物理信道。
可选地，所述获取单元901，具体用于：
获取所述UE归属的小区在时域上的系统带宽；和/或，
获取所述UE归属的小区在频域上的系统带宽；和/或，
获取所述UE归属的小区在空域上的系统带宽。
可选地，所述接收单元902，还用于接收所述UE归属的小区内发送的广播消息；
所述获取单元901，具体用于获取所述接收单元902接收的广播消息中携带的第一指示信息,所述第一指示信息指示了所述小区的系统带宽。
可选地，所述接收单元902，具体用于在所述获取单元901获取的所述小区的系统带宽内，接收所述小区的SCH、PBCH、下行控制信道中的至少一种，以及接收CRS。
可选地，所述接收单元902，具体用于：
在所述获取单元901获取的所述小区的系统带宽内的第一预设传输位置，接收SCH；和/或，
在所述获取单元901获取的所述小区的系统带宽内的第二预设传输位置，接收PBCH。
可选地，所述接收单元902，还用于接收在所述小区内发送的广播消息；
所述获取单元901，具体用于获取所述接收单元902接收的广播消息中携带的第二指示信息，所述第二指示信息指示了进行SCH的传输在获取的所述小区的系统带宽内的第一传输位置；和/或，获取所述接收单元902接收的广播消息中携带的第三指示信息，所述第三指示信息指示了进行PBCH的传输在获取的所述小区的系统带宽内的第二传输位置；
所述接收单元902，具体用于在所述获取单元901获取的系统带宽的第一传输位置接收SCH；和/或，在所述获取单元901获取的系统带宽的第二传输位置接收PBCH。
图10为本发明实施例提供的另一种基站结构图，该基站用于执行本发明实施例提供的下行物理信道的发送方法，该基站包括：存储器1001、处理器1002和通信接口1003；
所述存储器1001，用于存储程序指令；
所述处理器1002，用于根据所述存储器1001中存储的程序指令执行以下操作：
当满足预设的触发条件时，调整所述基站管理的小区的系统带宽；
在调整后的所述小区的系统带宽内，通过所述通信接口1003发送所述小区的下行物理信道。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行调整所述基站管理的小区的系统带宽的操作，包括：
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽的操作，包括：
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在时域上的系统带宽；和/或，
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在频域上的系统带宽；和/或，
根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在空域上的系统带宽。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行 根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽的操作，包括：
根据所述基站管理的小区的全系统带宽、所述全系统带宽的负载、所述小区的业务量和/或业务优先级，调整所述小区的系统带宽。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽的操作之后，所述处理器1002还用于根据所述存储器1001中存储的程序指令执行以下操作：
通过通信接口1003发送所述小区的广播消息，所述广播消息中携带第一指示信息，所述第一指示信息用于指示调整后的所述小区的系统带宽。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行在调整后的所述小区的系统带宽内，通过所述通信接口1003发送所述小区的下行物理信道的操作，包括：
在调整后的所述小区的系统带宽内，通过所述通信接口1003发送所述小区的SCH、PBCH、下行控制信道中的至少一种，以及通过所述通信接口1003发送CRS。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行在调整后的所述小区的系统带宽内，通过所述通信接口1003发送所述小区的SCH、PBCH中的至少一种的操作，包括：
在调整后的所述小区的系统带宽内的第一预设传输位置，通过所述通信接口1003发送所述小区的SCH；和/或，
在调整后的所述小区的系统带宽内的第二预设传输位置，通过所述通信接口1003发送所述小区的PBCH。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行在调整后的所述小区的系统带宽内，通过所述通信接口1003发送所述小区的SCH、PBCH中的至少一种的操作，包括：
确定在调整后的所述小区的系统带宽内的第一传输位置，通过所述通信接口1003在所述第一传输位置发送所述小区的SCH；和/或，
确定在调整后的所述小区的系统带宽内的第二传输位置，通过所述通信接口1003在所述第二传输位置发送所述小区的PBCH。
可选地，所述处理器1002根据所述存储器1001中存储的程序指令执行确定在调整后的所述小区的系统带宽内的第一传输位置的操作之后，所述处理器1002还用于根据所述存储器1001中存储的程序指令执行以下操作：
通过所述通信接口1003发送所述小区的广播消息，所述广播消息中携带第二指示信息，所述第二指示信息用于指示所述第一传输位置；和/或，
所述处理器1002根据所述存储器1001中存储的程序指令执行确定在调整后的所述小区的系统带宽内的第二传输位置的操作之后，所述处理器1002还用于根据所述存储器1001中存储的程序指令执行以下操作：
通过所述通信接口1003发送所述小区的广播消息，所述广播消息中携带第三指示信息，所述第三指示信息用于指示所述第二传输位置。
图11为本发明实施例提供的另一种UE结构图，该UE用于执行本发明实施例提供的下行物理信道的接收方法，该UE包括：存储器1101、处理器1102和通信接口1103；
所述存储器1101，用于存储程序指令；
所述处理器1102，用于根据所述存储器1101中存储的程序指令执行以下操作：
获取所述UE归属的小区的系统带宽；
在获取的所述小区的系统带宽内，通过所述通信接口1103接收所述小区的下行物理信道。
可选地，所述处理器1102根据所述存储器1101中存储的程序指令执行获取所述UE归属的小区的系统带宽的操作，包括：
获取所述UE归属的小区在时域上的系统带宽；和/或，
获取所述UE归属的小区在频域上的系统带宽；和/或，
获取所述UE归属的小区在空域上的系统带宽。
可选地，所述处理器1102根据所述存储器1101中存储的程序指令执行获取所述UE归属的小区的系统带宽的操作，包括：
通过所述通信接口1103接收所述UE归属的小区内发送的广播消息；
获取所述广播消息中携带的第一指示信息,所述第一指示信息指示了所述小区的系统带宽。
可选地，所述处理器1102根据所述存储器1101中存储的程序指令执行在获取的所述小区的系统带宽内，通过所述通信接口1103接收所述小区的下行物理信道，包括：
在获取的所述小区的系统带宽内，通过所述通信接口1103接收所述小区的SCH、PBCH、下行控制信道中的至少一种，以及接收CRS。
可选地，所述处理器1102根据所述存储器1101中存储的程序指令执行在获取的所述小区的系统带宽内，通过所述通信接口1103接收所述小区的SCH、PBCH中的至少一种的操作，包括：
在获取的所述小区的系统带宽内的第一预设传输位置，通过所述通信接口1103接收SCH；和/或，
在获取的所述小区的系统带宽内的第二预设传输位置，通过所述通信接口1103接收PBCH。
可选地，所述处理器1102根据所述存储器1101中存储的程序指令执行在获取的所述小区的系统带宽内，通过所述通信接口1103接收所述小区的SCH、PBCH中的至少一种的操作，包括：
通过所述通信接口1103接收在所述小区内发送的广播消息；
获取所述广播消息中携带的第二指示信息，所述第二指示信息指示了进行SCH的传输在获取的所述小区的系统带宽内的第一传输位置；和/或，
获取所述广播消息中携带的第三指示信息，所述第三指示信息指示了进 行PBCH的传输在获取的所述小区的系统带宽内的第二传输位置；
通过所述通信接口1103在所述系统带宽的第一传输位置接收SCH；和/或，
通过所述通信接口1103在所述系统带宽的第二传输位置接收PBCH。
专业人员应该还可以进一步意识到，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。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令处理器完成，所述的程序可以存储于计算机可读存储介质中，所述存储介质是非短暂性(non-transitory)介质，例如随机存取存储器，只读存储器，快闪存储器，硬盘，固态硬盘，磁带(magnetic tape)，软盘(floppy disk)，光盘(optical disc)及其任意组合。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (30)

  1. 一种下行物理信道的发送方法，其特征在于，所述方法包括：
    当满足预设的触发条件时，基站调整所述基站管理的小区的系统带宽；
    所述基站在调整后的所述小区的系统带宽内，发送所述小区的下行物理信道。
  2. 如权利要求1所述的方法，其特征在于，所述基站调整所述基站管理的小区的系统带宽，包括：
    基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽。
  3. 如权利要求2所述的方法，其特征在于，所述基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽，包括：
    基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在时域上的系统带宽；和/或，
    基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在频域上的系统带宽；和/或，
    基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在空域上的系统带宽。
  4. 如权利要求2所述的方法，其特征在于，所述基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽，包括：
    基站根据所述基站管理的小区的全系统带宽、所述全系统带宽的负载、所述小区的业务量和/或业务优先级，调整所述小区的系统带宽。
  5. 如权利要求2所述的方法，其特征在于，所述基站根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽之后，所述方法还包括：
    所述基站发送所述小区的广播消息，所述广播消息中携带第一指示信息，所述第一指示信息用于指示调整后的所述小区的系统带宽。
  6. 如权利要求1至5中任一项所述的方法，其特征在于，所述基站在调整后的所述小区的系统带宽内，发送所述小区的下行物理信道，包括：
    所述基站在调整后的所述小区的系统带宽内，发送所述小区的同步信道SCH、广播信道PBCH、下行控制信道中的至少一种，以及发送公共参考信号CRS。
  7. 如权利要求6所述的方法，其特征在于，所述基站在调整后的所述小区的系统带宽内，发送所述小区的SCH、PBCH中的至少一种，包括：
    所述基站在调整后的所述小区的系统带宽内的第一预设传输位置，发送所述小区的SCH；和/或，
    所述基站在调整后的所述小区的系统带宽内的第二预设传输位置，发送所述小区的PBCH。
  8. 如权利要求6所述的方法，其特征在于，所述基站在调整后的所述小区的系统带宽内，发送所述小区的SCH、PBCH中的至少一种，包括：
    所述基站确定在调整后的所述小区的系统带宽内的第一传输位置，在所述第一传输位置发送所述小区的SCH；和/或，
    所述基站确定在调整后的所述小区的系统带宽内的第二传输位置，在所述第二传输位置发送所述小区的PBCH。
  9. 如权利要求8所述的方法，其特征在于，所述基站确定在调整后的所述小区的系统带宽内的第一传输位置之后，所述方法还包括：
    所述基站发送所述小区的广播消息，所述广播消息中携带第二指示信息，所述第二指示信息用于指示所述第一传输位置；和/或，
    所述基站确定在调整后的所述小区的系统带宽内的第二传输位置之后，所述方法还包括：
    所述基站发送所述小区的广播消息，所述广播消息中携带第三指示信息，所述第三指示信息用于指示所述第二传输位置。
  10. 一种下行物理信道的接收方法，其特征在于，所述方法包括：
    用户设备UE获取所述UE归属的小区的系统带宽；
    所述UE在获取的所述小区的系统带宽内，接收所述小区的下行物理信道。
  11. 如权利要求10所述的方法，其特征在于，所述UE获取所述UE归属的小区的系统带宽，包括：
    UE获取所述UE归属的小区在时域上的系统带宽；和/或，
    UE获取所述UE归属的小区在频域上的系统带宽；和/或，
    UE获取所述UE归属的小区在空域上的系统带宽。
  12. 如权利要求10所述的方法，其特征在于，所述UE获取所述UE归属的小区的系统带宽，包括：
    UE接收所述UE归属的小区内发送的广播消息；
    获取所述广播消息中携带的第一指示信息,所述第一指示信息指示了所述小区的系统带宽。
  13. 如权利要求10至12中任一项所述的方法，其特征在于，所述UE在获取的所述小区的系统带宽内，接收所述小区的下行物理信道，包括：
    所述UE在获取的所述小区的系统带宽内，接收所述小区的同步信道SCH、广播信道PBCH、下行控制信道中的至少一种，以及接收公共参考信号CRS。
  14. 如权利要求13所述的方法，其特征在于，所述UE在获取的所述小区的系统带宽内，接收所述小区的SCH、PBCH中的至少一种，包括：
    所述UE在获取的所述小区的系统带宽内的第一预设传输位置，接收SCH；和/或，
    所述UE在获取的所述小区的系统带宽内的第二预设传输位置，接收PBCH。
  15. 如权利要求13所述的方法，其特征在于，所述UE在获取的所述小区的系统带宽内，接收所述小区的SCH、PBCH中的至少一种，包括：
    所述UE接收在所述小区内发送的广播消息；
    获取所述广播消息中携带的第二指示信息，所述第二指示信息指示了进行SCH的传输在获取的所述小区的系统带宽内的第一传输位置；和/或，
    获取所述广播消息中携带的第三指示信息，所述第三指示信息指示了进行PBCH的传输在获取的所述小区的系统带宽内的第二传输位置；
    在所述系统带宽的第一传输位置接收SCH；和/或，
    在所述系统带宽的第二传输位置接收PBCH。
  16. 一种基站，其特征在于，所述基站包括：
    调整单元，用于在满足预设的触发条件时，调整所述基站管理的小区的系统带宽；
    发送单元，用于在所述调整单元调整后的所述小区的系统带宽内，发送所述小区的下行物理信道。
  17. 如权利要求16所述的基站，其特征在于，所述调整单元，具体用于根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区的系统带宽。
  18. 如权利要求17所述的基站，其特征在于，所述调整单元，具体用于：
    根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在时域上的系统带宽；和/或，
    根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在频域上的系统带宽；和/或，
    根据所述基站管理的小区的业务量和/或业务优先级，调整所述小区在空域上的系统带宽。
  19. 如权利要求17所述的基站，其特征在于，所述调整单元，具体用于根据所述基站管理的小区的全系统带宽、所述全系统带宽的负载、所述小区的业务量和/或业务优先级，调整所述小区的系统带宽。
  20. 如权利要求17所述的基站，其特征在于，所述发送单元还用于：
    在所述调整单元调整所述小区的系统带宽之后，发送所述小区的广播消息，所述广播消息中携带第一指示信息，所述第一指示信息用于指示所述调整单元调整后的所述小区的系统带宽。
  21. 如权利要求16至20中任一项所述的基站，其特征在于，所述发送单元，具体用于在所述调整单元调整后的所述小区的系统带宽内，发送所述小区的同步信道SCH、广播信道PBCH、下行控制信道中的至少一种，以及发送公共参考信号CRS。
  22. 如权利要求21所述的基站，其特征在于，所述发送单元，具体用于：
    在所述调整单元调整后的所述小区的系统带宽内的第一预设传输位置，发送所述小区的SCH；和/或，
    在所述调整单元调整后的所述小区的系统带宽内的第二预设传输位置，发送所述小区的PBCH。
  23. 如权利要求21所述的基站，其特征在于：
    所述调整单元，还用于确定在调整后的所述小区的系统带宽内的第一传输位置；
    所述发送单元，具体用于在所述调整单元确定的第一传输位置发送所述小区的SCH；和/或，
    所述调整单元，还用于确定在调整后的所述小区的系统带宽内的第二传输位置；
    所述发送单元，具体用于在所述调整单元确定的第二传输位置发送所述小区的PBCH。
  24. 如权利要求23所述的基站，其特征在于，所述发送单元还用于：
    在所述调整单元确定在调整后的所述小区的系统带宽内的第一传输位置之后，发送所述小区的广播消息，所述广播消息中携带第二指示信息，所述第二指示信息用于指示所述第一传输位置；和/或，
    在所述调整单元确定在调整后的所述小区的系统带宽内的第二传输位置之后，发送所述小区的广播消息，所述广播消息中携带第三指示信息，所述第三指示信息用于指示所述第二传输位置。
  25. 一种用户设备UE，其特征在于，所述UE包括：
    获取单元，用于获取所述UE归属的小区的系统带宽；
    接收单元，用于在所述获取单元获取的所述小区的系统带宽内，接收所述小区的下行物理信道。
  26. 如权利要求25所述的UE，其特征在于，所述获取单元，具体用于：
    获取所述UE归属的小区在时域上的系统带宽；和/或，
    获取所述UE归属的小区在频域上的系统带宽；和/或，
    获取所述UE归属的小区在空域上的系统带宽。
  27. 如权利要求25所述的UE，其特征在于，所述接收单元，还用于接收所述UE归属的小区内发送的广播消息；
    所述获取单元，具体用于获取所述接收单元接收的广播消息中携带的第一指示信息,所述第一指示信息指示了所述小区的系统带宽。
  28. 如权利要求25至27中任一项所述的UE，其特征在于，所述接收单元，具体用于在所述获取单元获取的所述小区的系统带宽内，接收所述小区的同步信道SCH、广播信道PBCH、下行控制信道中的至少一种，以及接收公共参考信号CRS。
  29. 如权利要求28所述的UE，其特征在于，所述接收单元，具体用于：
    在所述获取单元获取的所述小区的系统带宽内的第一预设传输位置，接收SCH；和/或，
    在所述获取单元获取的所述小区的系统带宽内的第二预设传输位置，接收PBCH。
  30. 如权利要求28所述的UE，其特征在于：
    所述接收单元，还用于接收在所述小区内发送的广播消息；
    所述获取单元，具体用于获取所述接收单元接收的广播消息中携带的第二指示信息，所述第二指示信息指示了进行SCH的传输在获取的所述小区的系统带宽内的第一传输位置；和/或，获取所述接收单元接收的广播消息中携带的第三指示信息，所述第三指示信息指示了进行PBCH的传输在获取的所述 小区的系统带宽内的第二传输位置；
    所述接收单元，具体用于在所述获取单元获取的系统带宽的第一传输位置接收SCH；和/或，在所述获取单元获取的系统带宽的第二传输位置接收PBCH。
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