WO2021036889A1 - 小区专属参考信号配置方法及装置、存储介质、基站、用户设备 - Google Patents

小区专属参考信号配置方法及装置、存储介质、基站、用户设备 Download PDF

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WO2021036889A1
WO2021036889A1 PCT/CN2020/110127 CN2020110127W WO2021036889A1 WO 2021036889 A1 WO2021036889 A1 WO 2021036889A1 CN 2020110127 W CN2020110127 W CN 2020110127W WO 2021036889 A1 WO2021036889 A1 WO 2021036889A1
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Prior art keywords
reference signal
specific reference
modulation mode
cell
time slot
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PCT/CN2020/110127
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English (en)
French (fr)
Inventor
苗润泉
王化磊
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展讯半导体(南京)有限公司
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Priority to EP20856823.8A priority Critical patent/EP4020868A4/en
Priority to JP2022512397A priority patent/JP7345635B2/ja
Priority to US17/636,748 priority patent/US20220295427A1/en
Priority to KR1020227009368A priority patent/KR20220106737A/ko
Publication of WO2021036889A1 publication Critical patent/WO2021036889A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0076—Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying

Definitions

  • the present invention relates to the field of communication technology, and in particular to a cell-specific reference signal configuration method and device, storage medium, base station, and user equipment.
  • the modulation methods that can be used for the Physical Downlink Shared Channel include: -Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), 8-Phase Shift Keying (PSK) and 16 Amplitude Phase Shift Keying ( AmplitudePhaseShiftKeying, APSK), and for a single carrier waveform, it can be mapped to the frequency domain through Transform Precoding (that is, Discrete Fourier Transform (DFT)).
  • DFT Discrete Fourier Transform
  • CRS Cell Specific Reference Signal
  • auxiliary CRS auxiliary CRS
  • the regular CRS and the auxiliary CRS have the same position in the frequency domain, and each occupies a specific symbol in the time domain.
  • CRS adopts pseudo noise code (Pseudo-Noise Code, PN) sequence generation, adopts QPSK modulation, generates modulation symbol sequence as follows:
  • the relative position of the primary synchronization signal (Primary Synchronization Signal, PSS) and the secondary synchronization signal (Secondary Synchronization Signal, SSS) can be used to determine whether the cell is working in Frequency Division Duplex (Frequency Division). Duplexing (FDD) mode or Time Division Duplex (TDD) mode, and the exact location of the SSS can be used to determine the configuration of the cyclic prefix (CP) of the cell.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • CP cyclic prefix
  • PSS, SSS and physical broadcast channel Physical Broadcast Channel, PBCH
  • PBCH Physical Broadcast Channel
  • the master information block (Master Information Block, MIB) is carried by the PBCH.
  • CRS is used for demodulation of PDSCH, PDCCH and PBCH.
  • the MIB contains Additional CRS Indication to indicate whether to configure auxiliary CRS.
  • the current CRS always uses the QPSK modulation method, and uses the demodulated CRS to demodulate the PDSCH.
  • some configurations such as the PDSCH adopts a single carrier waveform and adopts the Modulation
  • the technical problem solved by the present invention is how to improve the performance of demodulating data of the cell-specific reference signal.
  • the cell-specific reference signal configuration method includes: determining to configure a conventional cell-specific reference signal in a current time slot; if there is synchronization in the current time slot Signal block, determine the synchronization signal block in the current time slot, otherwise determine the synchronization signal block in the previous synchronization signal block time slot before the current time slot; use the modulation mode in the synchronization signal block to indicate
  • the information indicates the modulation mode of the conventional cell-specific reference signal in the current time slot, or it is determined that the modulation mode of the conventional cell-specific reference signal is a preset modulation mode, and the peak-to-average ratio of the modulation mode of the conventional cell-specific reference signal is less than It is equal to the peak-to-average ratio of the modulation mode of the data to be demodulated using the conventional cell-specific reference signal.
  • the using the modulation mode indication information in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot includes: using the modulation mode indication in the master information block in the synchronization signal block The information indicates the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • the using the modulation mode indication information in the main information block in the synchronization signal block to indicate the modulation mode of the regular cell-specific reference signal in the current time slot includes: adding a field to the main information block, And carry the modulation mode indication information in the newly added domain to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • the modulation mode indication information is the relative time domain positional relationship between the primary synchronization signal and the secondary synchronization signal in the synchronization signal block, and the modulation mode indication information in the synchronization signal block is used to indicate the current time.
  • the modulation mode of the conventional cell-specific reference signal in the slot includes: using the relative time domain position relationship between the primary synchronization signal and the secondary synchronization signal in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • the method before using the modulation mode indication information in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot, the method further includes: determining a current channel condition; and determining whether or not according to the current channel condition Configure the dedicated reference signal for the secondary cell.
  • the using the modulation mode indication information in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot includes: when configuring the secondary cell-specific reference signal, using the synchronization
  • the modulation mode indication information in the signal block also indicates the modulation mode of the conventional cell-specific reference signal and the modulation mode of the secondary cell-specific reference signal in the current time slot; or, when configuring the secondary cell-specific reference signal, It is determined that the modulation mode of the conventional cell-specific reference signal is a preset modulation mode, and the modulation mode indication information in the secondary cell-specific reference signal indication field in the synchronization signal block is used to indicate the modulation mode of the secondary cell-specific reference signal.
  • the modulation mode of the conventional cell-specific reference signal is selected from And QPSK.
  • the embodiment of the present invention also discloses a method for determining a cell-specific reference signal.
  • the method for determining a cell-specific reference signal includes: if there is a synchronization signal block in the current time slot, receiving synchronization in the current time slot Signal block, otherwise determine the synchronization signal block in the previous synchronization signal block time slot before the current time slot; determine the regular cell-specific reference signal in the current time slot according to the modulation mode indication information in the synchronization signal block Or determine that the modulation method of the conventional cell-specific reference signal is a preset modulation method, and the peak-to-average ratio of the modulation method of the conventional cell-specific reference signal is less than or equal to that to be demodulated using the conventional cell-specific reference signal The peak-to-average ratio of the data modulation method.
  • the embodiment of the present invention also discloses a cell-specific reference signal configuration device.
  • the cell-specific reference signal configuration device includes: a reference signal determining module for determining to configure a conventional cell-specific reference signal in a current time slot;
  • the synchronization signal block determination module is used to determine the synchronization signal block in the current time slot when there is a synchronization signal block in the current time slot, otherwise determine the previous synchronization signal block time slot before the current time slot
  • the modulation mode indication module in the synchronization signal block is used to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot by using the modulation mode indication information in the synchronization signal block, or to determine the conventional cell-specific reference signal
  • the modulation mode is a preset modulation mode, and the peak-to-average ratio of the modulation mode of the conventional cell-specific reference signal is less than or equal to the peak-to-average ratio of the modulation mode of the data to be demodulated using the conventional cell-specific reference signal.
  • the embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and the steps of the cell-specific reference signal configuration method are executed when the computer instructions are run.
  • the embodiment of the present invention also discloses a base station, including a memory and a processor.
  • the memory stores computer instructions that can run on the processor.
  • the processor executes the cell-specific instructions when the computer instructions are executed. Refer to the steps of the signal configuration method.
  • the mode indication information indicates the modulation mode of the conventional cell-specific reference signal in the current time slot, or determines that the modulation mode of the conventional cell-specific reference signal is a preset modulation mode.
  • the modulation method of the conventional cell-specific reference signal is configured, and the peak-to-average ratio of the modulation method of the conventional cell-specific reference signal is less than or equal to the peak of the modulation method of the data to be demodulated using the conventional cell-specific reference signal.
  • the flexibility of the modulation method configuration of the conventional cell-specific reference signal can be realized, and the peak-to-average ratio of the cell-specific reference signal can be reduced to ensure the reception of the conventional cell-specific reference signal
  • the power is greater than the received power of the data to be demodulated, for example, greater than the received power of the PDSCH, thereby improving the performance of demodulating data with the cell-specific reference signal.
  • the modulation mode indication information in the master information block in the synchronization signal block is used to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • the relative time-domain position relationship between the primary synchronization signal and the secondary synchronization signal in the synchronization signal block is used to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • the main information block can be broadcast to all user equipments, and modulation mode indication information can be added to the main information block to directly indicate the modulation mode of the conventional cell-specific reference signal; or, through the main synchronization signal and The relative time-domain position relationship of the secondary synchronization signal indirectly indicates the modulation mode of the conventional cell-specific reference signal, which can realize the indication of the modulation mode without affecting the demodulation performance and function of the synchronization signal block.
  • FIG. 1 is a flowchart of a method for configuring a cell-specific reference signal according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of a synchronization signal block according to an embodiment of the present invention.
  • FIG. 3 is a partial flowchart of a method for configuring a cell-specific reference signal according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a cell-specific reference signal configuration device according to an embodiment of the present invention.
  • the current CRS fixedly adopts the QPSK modulation method, and the demodulated CRS is used for PDSCH demodulation.
  • the modulation method of the conventional cell-specific reference signal is configured, and the peak-to-average ratio of the modulation method of the conventional cell-specific reference signal is less than or equal to the peak of the modulation method of the data to be demodulated using the conventional cell-specific reference signal.
  • the flexibility of the modulation method configuration of the conventional cell-specific reference signal can be realized, and the peak-to-average ratio of the cell-specific reference signal can be reduced to ensure the reception of the conventional cell-specific reference signal
  • the power is greater than the received power of the data to be demodulated, for example, greater than the received power of the PDSCH, thereby improving the performance of demodulating data with the cell-specific reference signal.
  • FIG. 1 is a flowchart of a method for configuring a cell-specific reference signal according to an embodiment of the present invention.
  • the cell-specific reference signal configuration method can be used on the base station side, that is, the base station can specifically execute each step of the method shown in FIG. 1.
  • the cell-specific reference signal configuration method may include the following steps:
  • Step S101 Determine to configure a conventional cell-specific reference signal in the current time slot
  • Step S102 If there is a synchronization signal block in the current time slot, determine the synchronization signal block in the current time slot, otherwise determine the synchronization signal block in the previous synchronization signal block time slot before the current time slot ;
  • Step S103 Use the modulation mode indication information in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot, or determine that the modulation mode of the conventional cell-specific reference signal is a preset modulation mode, so The peak-to-average ratio of the modulation mode of the conventional cell-specific reference signal is less than or equal to the peak-to-average ratio of the modulation mode of the data to be demodulated using the conventional cell-specific reference signal.
  • sequence number of each step in this embodiment does not represent a limitation on the execution order of each step.
  • a conventional CRS can be configured in each time slot.
  • the current time slot can be a synchronization signal block time slot (SSB slot), that is, a time slot that includes the SSB; it can also be a non-synchronization signal block time slot (non-SSB slot), that is, a time slot that does not include the SSB.
  • SSB slot synchronization signal block time slot
  • non-SSB slot non-synchronization signal block time slot
  • the conventional CRS can be used to demodulate subsequent data, for example, can be used to demodulate PDSCH, or can be used to demodulate PBCH.
  • step S102 if there is a synchronization signal block in the current time slot, that is, the current time slot is a synchronization signal block time slot, the synchronization signal block in the current time slot can be determined; if the current time slot If there is no synchronization signal block, that is, the current time slot is a non-synchronization signal block time slot, then the synchronization signal block in the previous synchronization signal block time slot before the current time slot can be determined.
  • the SSB may include a primary synchronization signal (Primary Synchronization Signal, PSS), a secondary synchronization signal (Secondary Synchronization Signal, SSS), and a physical broadcast channel (Physical Broadcast Channel, PBCH).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the PBCH carries a master information block (Master Information Block, MIB).
  • the base station may carry modulation mode indication information in the SSB, and the modulation mode indication information may indicate the modulation mode of the conventional CRS.
  • the base station may also determine that the modulation mode of the conventional CRS is the preset modulation mode.
  • the modulation mode of the conventional cell-specific reference signal is selected from And QPSK.
  • the preset modulation method can be selected from And QPSK.
  • a single carrier waveform is used for the PDSCH and the base station can configure the conventional CRS modulation mode as The situation where the received power of the CRS is less than or equal to the received power of the PDSCH is avoided, and the demodulation performance of the PDSCH is improved.
  • the modulation mode can be used to modulate the conventional CRS, and the modulated conventional CRS can be sent out.
  • the UE After the UE receives the modulation mode indication information sent by the base station, it can determine the modulation mode of the conventional CRS; after the UE receives the modulated conventional CRS sent by the base station, it uses the determined modulation mode of the conventional CRS to perform the modulation on the modulated conventional CRS. Demodulate to obtain conventional CRS.
  • the UE can demodulate the PBCH and/or PDSCH using the conventional CRS.
  • the modulation method of the conventional cell-specific reference signal is configured, and the peak-to-average ratio of the modulation method of the conventional cell-specific reference signal is less than or equal to the peak of the modulation method of the data to be demodulated using the conventional cell-specific reference signal.
  • the flexibility of the modulation method configuration of the conventional cell-specific reference signal can be realized, and the peak-to-average ratio of the cell-specific reference signal can be reduced to ensure the reception of the conventional cell-specific reference signal
  • the power is greater than the received power of the data to be demodulated, for example, greater than the received power of the PDSCH, thereby improving the performance of demodulating data with the cell-specific reference signal.
  • step S103 shown in FIG. 1 may include the following steps: use the modulation mode indication information in the master information block in the synchronization signal block to indicate the regular cell-specific reference in the current time slot The modulation method of the signal.
  • the modulation mode indication information is carried in the MIB to indicate the modulation mode of the conventional CRS in the current time slot.
  • the MIB can be broadcast to all user equipments, and modulation mode indication information can be added to the MIB to directly indicate the modulation mode of the conventional cell-specific reference signal.
  • the UE After receiving the MIB, the UE can directly determine the content of the modulation mode indication information from the MIB, thereby determining the modulation mode of the conventional CRS.
  • a new domain may be added to the main information block, and the modulation mode indication information may be carried in the newly added domain to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • a new field can be added in order to indicate the related information of the conventional CRS.
  • the value of this field can indicate the modulation mode of conventional CRS. For example, when the newly added field is 0, the modulation method of conventional CRS is When the newly added field is 1, the modulation mode of the conventional CRS is QPSK.
  • the current time slot in this embodiment may be a non-synchronization signal block time slot (non-SSB slot) instead of a synchronization signal block time slot (SSB slot).
  • non-SSB slot non-synchronization signal block time slot
  • SSB slot synchronization signal block time slot
  • the modulation mode indication information is the relative time-domain positional relationship between the primary synchronization signal and the secondary synchronization signal in the synchronization signal block.
  • Step S103 shown in FIG. 1 may include the following steps: The relative time domain position relationship between the primary synchronization signal and the secondary synchronization signal in the synchronization signal block is used to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot.
  • FIG. 2 is a schematic diagram of the structure of a synchronization signal block, including two cases a and b.
  • the two situations a and b can indicate that the positions of the primary synchronization signal and the secondary synchronization signal in the synchronization signal block are different in the time domain.
  • the time domain position of the PSS is ahead of the time domain position of the SSS; as shown in case b in Figure 2, the time domain position of the SSS is ahead of the time domain position of the PSS.
  • the time-domain positional relationship between PSS and SSS has the above two situations.
  • the time-domain positional relationship between PSS and SSS can indicate the modulation mode of the conventional CRS in the current time slot.
  • the time-domain positional relationship between PSS and SSS in case a can indicate
  • the time-domain positional relationship between PSS and SSS in case b may indicate QPSK.
  • step S103 shown in FIG. 1 the following steps may be included:
  • Step S301 Determine the current channel condition
  • Step S302 Determine whether to configure a secondary cell dedicated reference signal according to the current channel condition.
  • the base station can determine whether to configure a secondary CRS for the UE according to the current channel conditions. Specifically, when the channel condition is poor, for example, when the channel quality is less than or equal to a preset value, the base station may configure the auxiliary CRS for the UE.
  • Step S103 shown in FIG. 1 may include the following steps:
  • Step S303 When configuring the secondary cell-specific reference signal, use the modulation mode indication information in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal and the secondary cell-specific reference signal in the current time slot.
  • Signal modulation method
  • Step S304 When configuring the secondary cell-specific reference signal, determine that the modulation mode of the conventional cell-specific reference signal is a preset modulation mode, and use the modulation mode in the secondary cell-specific reference signal indication field in the synchronization signal block
  • the indication information indicates the modulation mode of the dedicated reference signal of the secondary cell.
  • step S303 and step S304 can be selectively performed.
  • the modulation mode of the conventional CRS is different from the modulation mode of the auxiliary CRS, which further improves the CRS modulation mode. Configuration flexibility.
  • the modulation mode indication information in the SSB may be used to indicate the modulation mode of the regular CRS and the modulation mode of the auxiliary CRS in the current time slot.
  • the specific implementation manner may be to use the newly added domain in the MIB or the relative time domain position relationship between the PSS and the SSS to indicate. For detailed description, please refer to the foregoing embodiment, which will not be repeated here.
  • step S304 it can be determined that the modulation mode of the conventional CRS is a fixed adjustment mode, and the modulation mode indication information in the auxiliary cell specific reference signal indication domain (Additional CRS indication domain) in the SSB is used to indicate the modulation of the auxiliary CRS the way.
  • the value of the secondary cell-specific reference signal indication field in the MIB may be used to indicate the modulation mode of the secondary CRS.
  • auxiliary CRS indication field when the auxiliary CRS indication field is 00, it means that the base station is not configured with auxiliary CRS; when the auxiliary CRS indication field is 10, it means that the base station is configured with auxiliary CRS, and the modulation mode of the auxiliary CRS is When the auxiliary CRS indication field is 11, it means that the base station configures the auxiliary CRS, and the modulation mode of the auxiliary CRS is QPSK.
  • the embodiment of the present invention also discloses a method for determining a cell-specific reference signal.
  • the method for determining a cell-specific reference signal may be used on the user equipment side, that is, each step of the method may be executed by the UE.
  • the method for determining the cell-specific reference signal specifically includes the following steps: if there is a synchronization signal block in the current time slot, receiving the synchronization signal block in the current time slot, otherwise determining the previous synchronization signal before the current time slot A synchronization signal block in a block time slot; the modulation mode of the conventional cell-specific reference signal in the current time slot is determined according to the modulation mode indication information in the synchronization signal block, or the modulation mode of the conventional cell-specific reference signal is determined to be
  • the preset modulation mode, the peak-to-average ratio of the modulation mode of the conventional cell-specific reference signal is less than or equal to the peak-to-average ratio of the modulation mode of the data to be demodulated using the conventional cell-specific reference signal.
  • the UE can use the synchronization signal block in the time slot to determine the modulation mode of the conventional CRS; for the current time slot where there is no synchronization signal block, it is also That is, the non-SSB slot, the UE can use the synchronization signal block in the previous SSB slot to determine the modulation mode of the conventional CRS.
  • the specific implementation manner of determining the conventional CRS system can be indicated by using the newly added field in the MIB or the relative time-domain position relationship between the PSS and the SSS.
  • the foregoing embodiment please refer to the foregoing embodiment, which will not be repeated here.
  • an embodiment of the present invention also discloses a cell-specific reference signal configuration device, and the cell-specific reference signal configuration device 40 may include:
  • the reference signal determining module 401 is used to determine to configure a conventional cell-specific reference signal in the current time slot;
  • the synchronization signal block determining module 402 is used to determine the synchronization signal block in the current time slot when there is a synchronization signal block in the current time slot, otherwise it is determined when the previous synchronization signal block is before the current time slot Synchronization signal block in the slot;
  • the modulation mode indication module 403 is configured to use the modulation mode indication information in the synchronization signal block to indicate the modulation mode of the conventional cell-specific reference signal in the current time slot, or determine that the modulation mode of the conventional cell-specific reference signal is a pre- Assuming a modulation method, the peak-to-average ratio of the modulation method of the conventional cell-specific reference signal is less than or equal to the peak-to-average ratio of the modulation method of the data to be demodulated using the conventional cell-specific reference signal.
  • the modulation method of the conventional cell-specific reference signal is configured, and the peak-to-average ratio of the modulation method of the conventional cell-specific reference signal is less than or equal to the peak of the modulation method of the data to be demodulated using the conventional cell-specific reference signal.
  • the flexibility of the modulation method configuration of the conventional cell-specific reference signal can be realized, and the peak-to-average ratio of the cell-specific reference signal can be reduced to ensure the reception of the conventional cell-specific reference signal
  • the power is greater than the received power of the data to be demodulated, for example, greater than the received power of the PDSCH, thereby improving the performance of demodulating data with the cell-specific reference signal.
  • the embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and the computer instructions can execute the steps of the method shown in FIG. 1, FIG. 2 or FIG. 3 when the computer instruction is running.
  • the storage medium may include ROM, RAM, magnetic disk or optical disk, etc.
  • the storage medium may also include non-volatile memory (non-volatile) or non-transitory memory, etc.
  • the embodiment of the present invention also discloses a base station.
  • the base station may include a memory and a processor, and the memory stores computer instructions that can run on the processor.
  • the processor may execute the steps of the method shown in FIG. 1, FIG. 2 or FIG. 3 when running the computer instruction.

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Abstract

一种小区专属参考信号配置方法及装置、存储介质、基站、用户设备，小区专属参考信号配置方法，包括：确定在当前时隙内配置常规小区专属参考信号；如果所述当前时隙内存在同步信号块，则确定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。本发明技术方案能够提升小区专属参考信号解调数据的性能。

Description

小区专属参考信号配置方法及装置、存储介质、基站、用户设备
本申请要求2019年8月23日提交中国专利局、申请号为2019107885206、发明名称为“小区专属参考信号配置方法及装置、存储介质、基站、用户设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种小区专属参考信号配置方法及装置、存储介质、基站、用户设备。
背景技术
物理下行共享信道(Physical Downlink Shared Channel,PDSCH)可以采用的调制方式包括：
Figure PCTCN2020110127-appb-000001
-二进制相移键控(Binary Phase Shift Keying,BPSK)、正交相移键控(Quadrature Phase Shift Keying，QPSK)、8相移键控(Phase Shift Keying,PSK)和16振幅移相键控(AmplitudePhaseShiftKeying,APSK)，且对于单载波波形，可通过转换编码(Transform Precoding)(即离散傅里叶变换(Discrete Fourier Transform,DFT))后映射到频域。其中采用
Figure PCTCN2020110127-appb-000002
比其他调制方式可以具有较低的峰均比(Peak to Average Power Ratio,PAPR)，且调制符号经过DFT映射到频域相比于直接映射到频域具有较低PAPR。
小区专属参考信号(Cell Specific Reference Signal,CRS)包含常规CRS和辅助CRS(Additional CRS)，其中常规CRS是必定会有的，辅助CRS可以有，也可以没有(基站通过广播告知终端是否配置有辅助CRS)。常规CRS和辅助CRS在频域位置相同，时域上各自占据特定的符号。CRS采用伪噪声码 (Pseudo-Noise Code,PN)序列生成，采用QPSK调制，生成调制符号序列如下：
Figure PCTCN2020110127-appb-000003
CRS符号的映射直接在频域映射，不需要做DFT变换
在长期演进(Long Term Evolution，LTE)系统中，可以根据主同步信号(Primary Synchronization Signal,PSS)和辅同步信号(Secondary Synchronization Signal,SSS)的相对位置判断小区工作在频分双工(Frequency Division Duplexing,FDD)模式还是时分双工(Time Division Duplex,TDD)模式，并可进一步通过SSS的确切位置，判断小区的循环前缀(Cyclic Prefix,CP)的配置。在新无线(New Radio,NR)中，PSS、SSS和物理广播信道(Physical BroadcastChannel,PBCH)要绑定发送，称为为一个同步信号块(Synchronzation Signal,SSB)。且SSB仅在部分时隙(slot)出现，包含SSB的时隙称为SSB slot，不包含SSB的时隙称为non-SSB slot。主信息块(Master Information Block,MIB)通过PBCH承载。
在国内卫星通信系统中，CRS用于PDSCH、PDCCH和PBCH的解调，对于CRS，MIB中包含Additional CRS Indication来指示是否配置辅助CRS。
但是，目前的CRS固定采用QPSK的调制方式，使用解调出的CRS进行PDSCH解调，在某些配置下(如PDSCH采用单载波波形且采用
Figure PCTCN2020110127-appb-000004
调制)，会造成PDSCH的PAPR会比CRS小，CRS的接收功率小于等于PDSCH的接收功率，降低PDSCH的解调性能。
发明内容
本发明解决的技术问题是如何提升小区专属参考信号解调数据的性能。
为解决上述技术问题，本发明实施例提供一种小区专属参考信号配置方法，小区专属参考信号配置方法包括：确定在当前时隙内配置常规小区专属参 考信号；如果所述当前时隙内存在同步信号块，则确定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
可选的，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：利用所述同步信号块中主信息块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式。
可选的，所述利用所述同步信号块中主信息块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：在所述主信息块中新增域，并在新增的域中承载所述调制方式指示信息，以指示所述当前时隙内常规小区专属参考信号的调制方式。
可选的，所述调制方式指示信息为所述同步信号块中主同步信号与辅同步信号的相对时域位置关系，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：利用所述同步信号块中主同步信号与辅同步信号的相对时域位置关系指示所述当前时隙内常规小区专属参考信号的调制方式。
可选的，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式之前还包括：确定当前信道状况；根据所述当前信道状况确定是否配置辅助小区专属参考信号。
可选的，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：在配置所述辅助小区专属参考信号时，利用所述同步信号块中的调制方式指示信息一并指示所述当前时隙内常规小区专属参考信号的调制方式以及所述辅助小区专属参考信号的调制方式；或者，在配置所述辅助小区专属参考信号时，确定所述常规小区专属参考信号的调制方式为预设调制方式，并利用所述同步信号块中辅助小区专属参考信号 指示域中的调制方式指示信息指示所述辅助小区专属参考信号的调制方式。
可选的，所述常规小区专属参考信号的调制方式选自
Figure PCTCN2020110127-appb-000005
和QPSK。
为解决上述技术问题，本发明实施例还公开了一种小区专属参考信号确定方法，小区专属参考信号确定方法包括：如果当前时隙内存在同步信号块，则接收所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；根据所述同步信号块中的调制方式指示信息确定所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
为解决上述技术问题，本发明实施例还公开了一种小区专属参考信号配置装置，小区专属参考信号配置装置包括：参考信号确定模块，用以确定在当前时隙内配置常规小区专属参考信号；同步信号块确定模块，用以在所述当前时隙内存在同步信号块时，确定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；调制方式指示模块，用以利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
本发明实施例还公开了一种存储介质，其上存储有计算机指令，所述计算机指令运行时执行所述小区专属参考信号配置方法的步骤。
本发明实施例还公开了一种基站，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行所述小区专属参考信号配置方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
本发明技术方案中，确定在当前时隙内配置常规小区专属参考信号；确定 在所述当前时隙之前的上一同步信号块时隙中的同步信号块；利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式。本发明技术方案中，通过配置常规小区专属参考信号的调制方式，并且常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比，相对于现有技术中采用固定的调制方式，可以实现常规小区专属参考信号的调制方式配置的灵活性，还能够降低小区专属参考信号的峰均比，保证常规小区专属参考信号的接收功率大于其要解调的数据的接收功率，例如大于PDSCH的接收功率，从而提升小区专属参考信号解调数据的性能。
进一步地，利用所述同步信号块中主信息块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式。或者，利用所述同步信号块中主同步信号与辅同步信号的相对时域位置关系指示所述当前时隙内常规小区专属参考信号的调制方式。本发明技术方案中，主信息块能够广播给所有的用户设备，可以在主信息块新增调制方式指示信息，以用来直接指示常规小区专属参考信号的调制方式；或者，通过主同步信号与辅同步信号的相对时域位置关系间接地指示常规小区专属参考信号的调制方式，能够在不影响同步信号块的解调性能及其功能的前提下实现调制方式的指示。
附图说明
图1是本发明实施例一种小区专属参考信号配置方法的流程图；
图2是本发明实施例一种同步信号块的结构示意图；
图3是本发明实施例一种小区专属参考信号配置方法的部分流程图；
图4是本发明实施例一种小区专属参考信号配置装置的结构示意图。
具体实施方式
如背景技术中所述，目前的CRS固定采用QPSK的调制方式，使用解调出的CRS进行PDSCH解调，在某些配置下(如PDSCH采用单载波波形且采 用
Figure PCTCN2020110127-appb-000006
调制)，会造成PDSCH的PAPR会比CRS小，CRS的接收功率小于等于PDSCH的接收功率，降低PDSCH的解调性能。
本发明技术方案中，通过配置常规小区专属参考信号的调制方式，并且常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比，相对于现有技术中采用固定的调制方式，可以实现常规小区专属参考信号的调制方式配置的灵活性，还能够降低小区专属参考信号的峰均比，保证常规小区专属参考信号的接收功率大于其要解调的数据的接收功率，例如大于PDSCH的接收功率，从而提升小区专属参考信号解调数据的性能。
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
图1是本发明实施例一种小区专属参考信号配置方法的流程图。
所述小区专属参考信号配置方法可以用于基站侧，也就是说，具体可以由基站执行图1所示方法的各个步骤。
所述小区专属参考信号配置方法可以包括以下步骤：
步骤S101：确定在当前时隙内配置常规小区专属参考信号；
步骤S102：如果所述当前时隙内存在同步信号块，则确定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；
步骤S103：利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
需要指出的是，本实施例中各个步骤的序号并不代表对各个步骤的执行顺序的限定。
在步骤S101的具体实施中，可以在每一时隙内配置常规CRS。当前时隙可以是同步信号块时隙(SSB slot)，也即包含SSB的时隙；也可以是非同步信号块时隙(non-SSB slot)，也即不包含SSB的时隙。
具体地，常规CRS可以用于解调后续的数据，例如可以用于解调PDSCH，或者可以用于解调PBCH。
在步骤S102的具体实施中，如果所述当前时隙内存在同步信号块，也即当前时隙是同步信号块时隙，则可以确定当前时隙内的同步信号块；如果所述当前时隙内不存在同步信号块，也即当前时隙是非同步信号块时隙，则可以确定在当前时隙之前的上一同步信号块时隙中的同步信号块。
关于SSB的具体结构，可以参照图2。SSB中可以包括主同步信号(Primary Synchronization Signal,PSS)、辅同步信号(Secondary Synchronization Signal,SSS)以及物理广播信道(Physical BroadcastChannel,PBCH)。PBCH中携带有主信息块(Master Information Block,MIB)。
在步骤S103的具体实施中，基站可以在SSB中携带调制方式指示信息，调制方式指示信息可以指示常规CRS的调制方式。基站也可以确定常规CRS的调制方式为预设调制方式。
在一个具体实施例中，所述常规小区专属参考信号的调制方式选自
Figure PCTCN2020110127-appb-000007
和QPSK。也就是说，预设调制方式可以选自
Figure PCTCN2020110127-appb-000008
和QPSK。
本实施例中，对于PDSCH采用单载波波形且采用
Figure PCTCN2020110127-appb-000009
调制方式的情况下，基站可以配置常规CRS的调制方式为
Figure PCTCN2020110127-appb-000010
避免了CRS的接收功 率小于等于PDSCH的接收功率的情形，提升PDSCH的解调性能。
可以理解的是，基站在向用户设备(User Equipment,UE)指示常规CRS的调制方式后，可以利用该调制方式对常规CRS进行调制，并将调制后的常规CRS发送出去。UE在接收到基站发送的调制方式指示信息后，可以确定常规CRS的调制方式；UE在接收到基站发送的调制后的常规CRS后，利用确定的常规CRS的调制方式对调制后的常规CRS进行解调，以获得常规CRS。UE可以利用常规CRS解调PBCH和/或PDSCH。
本发明实施例中，通过配置常规小区专属参考信号的调制方式，并且常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比，相对于现有技术中采用固定的调制方式，可以实现常规小区专属参考信号的调制方式配置的灵活性，还能够降低小区专属参考信号的峰均比，保证常规小区专属参考信号的接收功率大于其要解调的数据的接收功率，例如大于PDSCH的接收功率，从而提升小区专属参考信号解调数据的性能。
在本发明一个非限制性的实施例中，图1所示步骤S103可以包括以下步骤：利用所述同步信号块中主信息块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式。
本实施例中，在MIB中携带调制方式指示信息，以指示当前时隙内常规CRS的调制方式。MIB能够广播给所有的用户设备，可以在MIB新增调制方式指示信息，以用来直接指示常规小区专属参考信号的调制方式。
UE在接收到MIB后，可以直接从MIB中确定调制方式指示信息的内容，从而确定常规CRS的调制方式。
进一步而言，可以在所述主信息块中新增域，并在新增的域中承载所述调制方式指示信息，以指示所述当前时隙内常规小区专属参考信号的调制方式。
由于MIB中的原有域是用来指示是否配置辅助CRS的，因此为了指示常 规CRS的相关信息，可以新增一个域。该域的数值可以表示常规CRS的调制方式。例如，新增的域为0时，常规CRS的调制方式为
Figure PCTCN2020110127-appb-000011
新增的域为1时，常规CRS的调制方式为QPSK。
需要说明的是，本实施例中的当前时隙可以是非同步信号块时隙(non-SSB slot)，而不是同步信号块时隙(SSB slot)。因为对于初始接入时的第一个时隙，该第一个时隙为SSB slot，并且在接收第一个SSB slot上的SSB时，没有前面可用的MIB信息，因而不能采用MIB来指示常规CRS的调制方式。
在本发明一个非限制性的实施例中，所述调制方式指示信息为所述同步信号块中主同步信号与辅同步信号的相对时域位置关系，图1所示步骤S103可以包括以下步骤：利用所述同步信号块中主同步信号与辅同步信号的相对时域位置关系指示所述当前时隙内常规小区专属参考信号的调制方式。
请参照图2，图2为一种同步信号块的结构示意图，包含a,b两种情形。a,b两种情形可以表示同步信号块中主同步信号与辅同步信号在时域上的位置不同。如图2中情形a所示，PSS的时域位置比SSS的时域位置靠前；如图2中情形b所示，SSS的时域位置比PSS的时域位置靠前。换言之，PSS与SSS的时域位置关系有上述两种情形。
由此，PSS与SSS的时域位置关系能够指示当前时隙内常规CRS的调制方式。例如，情形a中PSS与SSS的时域位置关系可以指示
Figure PCTCN2020110127-appb-000012
情形b中PSS与SSS的时域位置关系可以指示QPSK。
在本发明一个非限制性的实施例中，请参照图3，图1所示步骤S103之前可以包括以下步骤：
步骤S301：确定当前信道状况；
步骤S302：根据所述当前信道状况确定是否配置辅助小区专属参考信号。
本实施例中，基站可以根据当前的信道状况确定是否为UE配置辅助CRS。具体可以在信道状况较差时，例如信道质量小于等于预设值时，基站为UE配置辅助CRS。
本领域技术人员应当理解的是，关于配置辅助CRS的具体实现方式属于基站厂商自己的实现方案，可以参照现有技术，此处不再赘述。
图1所示步骤S103可以包括以下步骤：
步骤S303：在配置所述辅助小区专属参考信号时，利用所述同步信号块中的调制方式指示信息一并指示所述当前时隙内常规小区专属参考信号的调制方式以及所述辅助小区专属参考信号的调制方式；
步骤S304：在配置所述辅助小区专属参考信号时，确定所述常规小区专属参考信号的调制方式为预设调制方式，并利用所述同步信号块中辅助小区专属参考信号指示域中的调制方式指示信息指示所述辅助小区专属参考信号的调制方式。
在具体实施中，可以选择性地执行步骤S303和步骤S304其中一个步骤。
相较于前述实施例中常规CRS的调制方式与所述辅助CRS的调制方式相同，本实施例中，可以实现常规CRS的调制方式与所述辅助CRS的调制方式不同，进一步提升了CRS调制方式配置的灵活性。
在步骤S303的具体实施中，可以利用SSB中的调制方式指示信息一并指示所述当前时隙内常规CRS的调制方式以及所述辅助CRS的调制方式。具体实施方式可以是利用MIB中新增域或者PSS与SSS的相对时域位置关系来指示，详细描述请参照前述实施例，此处不再赘述。
在步骤S304的具体实施中，可以确定常规CRS的调制方式为固定调整方式，并利用SSB中辅助小区专属参考信号指示域(Additional CRS indication domain)中的调制方式指示信息指示所述辅助CRS的调制方式。具体可以是利用MIB中辅助小区专属参考信号指示域的值来指示辅助CRS的调制方式。
例如，辅助CRS指示域为00时，表示基站未配置辅助CRS；辅助CRS指示域为10时，表示基站配置辅助CRS，且辅助CRS的调制方式为
Figure PCTCN2020110127-appb-000013
辅助CRS指示域为11时，表示基站配置辅助CRS，且辅助CRS的调制方式为QPSK。
本发明实施例还公开了一种小区专属参考信号确定方法，所述小区专属参考信号确定方法可以用于用户设备侧，也即可以由UE执行该方法的各个步骤。
所述小区专属参考信号确定方法具体包括以下步骤：如果当前时隙内存在同步信号块，则接收所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；根据所述同步信号块中的调制方式指示信息确定所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
本实施例中，对于存在同步信号块的当前时隙，也即SSB slot，UE可以利用该时隙内的同步信号块确定常规CRS的调制方式；对于不存在同步信号块的当前时隙，也即non-SSB slot，UE可以利用上一SSB slot内的同步信号块确定常规CRS的调制方式。
确定常规CRS的制方式的具体实施方式可以是利用MIB中新增域或者PSS与SSS的相对时域位置关系来指示，详细描述请参照前述实施例，此处不再赘述。
请参照图4，本发明实施例还公开了一种小区专属参考信号配置装置，小区专属参考信号配置装置40可以包括：
参考信号确定模块401，用以确定在当前时隙内配置常规小区专属参考信号；
同步信号块确定模块402，用以在所述当前时隙内存在同步信号块时，确 定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；
调制方式指示模块403，用以利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
本发明实施例中，通过配置常规小区专属参考信号的调制方式，并且常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比，相对于现有技术中采用固定的调制方式，可以实现常规小区专属参考信号的调制方式配置的灵活性，还能够降低小区专属参考信号的峰均比，保证常规小区专属参考信号的接收功率大于其要解调的数据的接收功率，例如大于PDSCH的接收功率，从而提升小区专属参考信号解调数据的性能。
关于所述小区专属参考信号配置装置40的工作原理、工作方式的更多内容，可以参照图1至图3中的相关描述，这里不再赘述。
本发明实施例还公开了一种存储介质，其上存储有计算机指令，所述计算机指令运行时可以执行图1、图2或图3所示方法的步骤。所述存储介质可以包括ROM、RAM、磁盘或光盘等。所述存储介质还可以包括非挥发性存储器(non-volatile)或者非瞬态(non-transitory)存储器等。
本发明实施例还公开了一种基站，所述基站可以包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机指令。所述处理器运行所述计算机指令时可以执行图1、图2或图3所示方法的步骤。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范 围应当以权利要求所限定的范围为准。

Claims (12)

  1. 一种小区专属参考信号配置方法，其特征在于，包括：
    确定在当前时隙内配置常规小区专属参考信号；
    如果所述当前时隙内存在同步信号块，则确定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；
    利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
  2. 根据权利要求1所述的小区专属参考信号配置方法，其特征在于，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：
    利用所述同步信号块中主信息块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式。
  3. 根据权利要求2所述的小区专属参考信号配置方法，其特征在于，所述利用所述同步信号块中主信息块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：
    在所述主信息块中新增域，并在新增的域中承载所述调制方式指示信息，以指示所述当前时隙内常规小区专属参考信号的调制方式。
  4. 根据权利要求1所述的小区专属参考信号配置方法，其特征在于，所述调制方式指示信息为所述同步信号块中主同步信号与辅同步信号的相对时域位置关系，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：
    利用所述同步信号块中主同步信号与辅同步信号的相对时域位置关系指示所述当前时隙内常规小区专属参考信号的调制方式。
  5. 根据权利要求1所述的小区专属参考信号配置方法，其特征在于，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式之前还包括：
    确定当前信道状况；
    根据所述当前信道状况确定是否配置辅助小区专属参考信号。
  6. 根据权利要求5所述的小区专属参考信号配置方法，其特征在于，所述利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式包括：
    在配置所述辅助小区专属参考信号时，利用所述同步信号块中的调制方式指示信息一并指示所述当前时隙内常规小区专属参考信号的调制方式以及所述辅助小区专属参考信号的调制方式；
    或者，在配置所述辅助小区专属参考信号时，确定所述常规小区专属参考信号的调制方式为预设调制方式，并利用所述同步信号块中辅助小区专属参考信号指示域中的调制方式指示信息指示所述辅助小区专属参考信号的调制方式。
  7. 根据权利要求1至6任一项所述的小区专属参考信号配置方法，其特征在于，所述常规小区专属参考信号的调制方式选自
    Figure PCTCN2020110127-appb-100001
    -BPSK和QPSK。
  8. 一种小区专属参考信号确定方法，其特征在于，包括：
    如果当前时隙内存在同步信号块，则接收所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；
    根据所述同步信号块中的调制方式指示信息确定所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
  9. 一种小区专属参考信号配置装置，其特征在于，包括：
    参考信号确定模块，用以确定在当前时隙内配置常规小区专属参考信号；
    同步信号块确定模块，用以在所述当前时隙内存在同步信号块时，确定所述当前时隙内的同步信号块，否则确定在所述当前时隙之前的上一同步信号块时隙中的同步信号块；
    调制方式指示模块，用以利用所述同步信号块中的调制方式指示信息指示所述当前时隙内常规小区专属参考信号的调制方式，或者确定所述常规小区专属参考信号的调制方式为预设调制方式，所述常规小区专属参考信号的调制方式的峰均比小于等于利用所述常规小区专属参考信号要解调的数据的调制方式的峰均比。
  10. 一种存储介质，其上存储有计算机指令，其特征在于，所述计算机指令运行时执行权利要求1至7中任一项所述小区专属参考信号配置方法的步骤。
  11. 一种基站，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机指令，其特征在于，所述处理器运行所述计算机指令时执行权利要求1至7中任一项所述小区专属参考信号配置方法的步骤。
  12. 一种用户设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机指令，其特征在于，所述处理器运行所述计算机指令时执行权利要求8所述小区专属参考信号确定方法的步骤。
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QUALCOMM INCORPORATED: "Lower PAPR reference signals", 3GPP DRAFT; R1-1903468 LOWER PAPR REFERENCE SIGNALS, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20190225 - 20190301, 27 February 2019 (2019-02-27), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051601133 *
SAMSUNG: "View on Low PAPR RS", 3GPP DRAFT; R1-1904452 RS PAPR, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Xi’an, China; 20190408 - 20190412, 7 April 2019 (2019-04-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051699706 *

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CN110519033A (zh) 2019-11-29
JP2022546349A (ja) 2022-11-04
EP4020868A4 (en) 2022-11-16
KR20220106737A (ko) 2022-07-29

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