WO2020168575A1 - Procédé de communication sans fil, dispositif terminal et dispositif réseau - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif réseau Download PDF

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Publication number
WO2020168575A1
WO2020168575A1 PCT/CN2019/075959 CN2019075959W WO2020168575A1 WO 2020168575 A1 WO2020168575 A1 WO 2020168575A1 CN 2019075959 W CN2019075959 W CN 2019075959W WO 2020168575 A1 WO2020168575 A1 WO 2020168575A1
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WIPO (PCT)
Prior art keywords
ssb
terminal device
network device
indication information
sent
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PCT/CN2019/075959
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English (en)
Chinese (zh)
Inventor
贺传峰
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2019/075959 priority Critical patent/WO2020168575A1/fr
Priority to CN201980073840.1A priority patent/CN113039842B/zh
Publication of WO2020168575A1 publication Critical patent/WO2020168575A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and specifically relate to a wireless communication method, terminal device, and network device.
  • the network device can send (Synchronization Signal Block, SSB) to the terminal device.
  • the SSB can include a physical broadcast channel (Physical Broadcasting Channel, PBCH), a primary synchronization signal (Primary Synchronization Signal, PSS) and secondary synchronization signal (Secondary Synchronization Signal, SSS).
  • PBCH Physical Broadcasting Channel
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • the network device can periodically send the SSB, and the maximum number of SSBs that can be sent in each cycle can be called an SSB cluster.
  • SSBs When SSBs are sent periodically, SSBs of different periods may have a (Quasi Co-Loacted, QCL) relationship. For example, the same beam may be used to send SSBs in different periods.
  • the embodiments of the present application provide a wireless communication method, terminal equipment and network equipment, which can realize the determination of the QCL relationship of the SSB, and can further save channel resources and signaling overhead.
  • a wireless communication method including: a terminal device receives instruction information sent by a network device, where the instruction information indicates an SSB actually transmitted in a synchronization signal block SSB cluster; according to the actual transmitted SSB, the The terminal device determines the number of SSBs actually transmitted; according to the number, the terminal device determines the quasi co-located QCL relationship of the received SSB.
  • a wireless communication method including: a network device sends instruction information to a terminal device, where the instruction information indicates the SSB actually transmitted in the synchronization signal block SSB cluster; and according to the actual transmission indicated in the instruction information The number of SSBs, the network device determines the quasi co-located QCL relationship of the SSBs to be sent.
  • a terminal device for executing the method in the first aspect.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect.
  • a network device for executing the method in the second aspect.
  • the network device includes a functional module for executing the method in the above second aspect.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above second aspect.
  • a chip is provided for implementing the method in the first aspect.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method in the above-mentioned first aspect.
  • a chip is provided for implementing the method in the second aspect.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method in the above second aspect.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the above-mentioned first aspect.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the second aspect.
  • a computer program product including computer program instructions that cause a computer to execute the method in the first aspect.
  • a computer program product including computer program instructions that cause a computer to execute the method in the second aspect.
  • a computer program which when running on a computer, causes the computer to execute the method in the first aspect.
  • a computer program which, when run on a computer, causes the computer to execute the method in the second aspect.
  • the terminal device obtains the number of actually transmitted SSBs through the actually transmitted SSBs in the SSB cluster indicated in the indication information, and determines the QCL relationship based on the actual number of transmitted SSBs, which can avoid the SSB in the SSB cluster
  • the number of SSBs (the maximum number of SSBs that can be transmitted) determines the problem of channel waste caused by the QCL relationship, and borrows the indication information indicating the actual transmitted SSB to determine the QCL relationship of the SSB, which can avoid the need to send an additional indication information for Indicates the number used to determine the QCL relationship of the SSB, so that the signaling overhead can be reduced.
  • Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of an SSB provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a candidate transmission position of an SSB in a period under different subcarrier intervals according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an SSB transmission manner provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another SSB sending manner provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a QCL relationship of an SSB provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an SSB sending manner provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an SSB sending manner provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of an SSB sending manner provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 15 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LTE-A Advanced long term evolution
  • NR New Radio
  • NR NR system evolution system
  • LTE on unlicensed frequency bands LTE-based access to unlicensed spectrum, LTE-U
  • NR NR-based access to unlicensed spectrum, NR-U
  • UMTS Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • WiMAX Wireless Local Area Networks
  • WLAN Wireless Fidelity
  • WiFi next-generation communication systems or other communication systems, etc.
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 with a communication function and a terminal device 120.
  • the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
  • the method in the embodiments of the present application can be applied to communication in unlicensed spectrum, and can also be used in communication in licensed spectrum.
  • Unlicensed spectrum is the spectrum that can be used for radio equipment communication divided by the country and region. This spectrum can be considered as a shared spectrum, that is, the communication equipment in different communication systems can meet the regulatory requirements set by the country or region on the spectrum. Using this spectrum, it is not necessary to apply for a proprietary spectrum authorization from the government.
  • LBT Listen Before Talk
  • communication devices can follow the principle of Listen Before Talk (LBT) when communicating on unlicensed spectrum, that is, Before the communication device transmits signals on the channels of the unlicensed spectrum, it needs to perform channel listening (or called channel detection) first.
  • LBT Listen Before Talk
  • MCOT Maximum Channel Occupancy Time
  • MCOT can refer to the maximum length of time allowed to use unlicensed spectrum channels for signal transmission after successful LBT. Different channel access schemes have different MCOTs. The maximum value of MCOT may be 10 ms, for example. It should be understood that the MCOT is the time occupied by signal transmission.
  • Channel Occupancy Time may refer to the length of time that a channel of an unlicensed spectrum is used for signal transmission after a successful LBT, and the signal occupation of the channel may be discontinuous within this time length.
  • one COT may optionally not exceed 20 ms at the longest, and the length of time occupied by signal transmission in the COT does not exceed MCOT.
  • Common channels and signals in the NR system can cover the entire cell by means of multi-beam scanning, which is convenient for UEs in the cell to receive.
  • the multi-beam transmission of synchronization signal (SS, synchronization signal) and physical broadcast channel (Physical Broadcasting Channel, PBCH) can be done by defining SS/PBCH (SSB) burst set (the cluster set in the embodiment of this application can also be It is called cluster, that is, SS/PBCH cluster can be called SSB cluster).
  • SSB SS/PBCH
  • an SS/PBCH burst set may include one or more synchronization signal blocks (SS/PBCH block, SSB).
  • SS/PBCH block SSB
  • One SSB is used to carry the synchronization signal and broadcast channel of one beam. Therefore, the number of SSBs that can be included in an SS burst set can be equal to the SSB beams sent by the cell.
  • the maximum number L of SSB included in an SS burst set may be related to the frequency band of the system.
  • L is equal to 4; for a frequency band between 3 GHz and 6 GHz, L is equal to 8; for a frequency band between 6 GHz and 52.6, L is equal to 64.
  • one SSB may contain one symbol of primary synchronization signal (Primary synchronization signal, PSS), one symbol (Secondary synchronization signal, SSS), and two symbol NR-PBCH (New Radio Access Technology-Physical broadcast channel) , Physical broadcast channel), for example, as shown in Figure 2.
  • PSS Primary synchronization signal
  • SSS Secondary synchronization signal
  • NR-PBCH New Radio Access Technology-Physical broadcast channel
  • the time-frequency resources occupied by the PBCH may optionally include a demodulation reference signal (Demodulation Reference Signal, DMRS), which is used for demodulation of the PBCH.
  • DMRS Demodulation Reference Signal
  • all SSBs in the SS/PBCH burst set can be sent within a certain time window (for example, 5ms), and sent repeatedly in a certain period, which can be performed by the high-level parameter SSB-timing (SSB-timing) Configuration, for example, the period may include 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.
  • a certain time window for example, 5ms
  • SSB-timing SSB-timing
  • SCS subcarrier space
  • L is the largest number of SSBs, and the actual number of SSBs sent can be less than L.
  • the position of the actually sent SSB is notified to the terminal device through system information in the form of bit mapping.
  • the number and location of the actually sent SSB are determined by the base station. For example, in the frequency band below 6 GHz of the licensed spectrum, there are at most 8 SSBs included in the SSB burst, and the value of the SSB index is 0-7.
  • the base station informs the UE of the specific SSB sending position through 8-bit bit mapping.
  • the indexes of the actually sent SSB are 0, 2, 4, 6, and the 8-bit bit mapping carried in the system information is "101010".
  • the SSB index can optionally be used for frame synchronization, and can also be used for the terminal device to obtain the QCL relationship of the SSB.
  • the indexes of the SSBs received at different times are the same, and it can be considered that there is a QCL relationship between them.
  • the UE can filter the SSB with the QCL relationship as the measurement result of the beam level.
  • a network device can send a Discovery Reference Signal (DRS) signal for access, measurement, etc.
  • the DRS can include at least SSB.
  • the DRS may include SSB, PDCCH corresponding to SIB1, a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) carrying SIB1, and may also include a paging cell.
  • the DRS signal can also be sent according to a block, and the signals in the block have a (Quasi Co-Loacted, QCL) relationship.
  • the DRS may also include other types of information, which is not specifically limited in the embodiments of the present application.
  • the SSB may not be successfully transmitted at a predetermined time.
  • the SSB transmission opportunity can be increased.
  • the number Y of candidate positions of the DRS configured by the network device is greater than the number X of the DRS actually sent by the network device. That is to say, for each DRS transmission window, the network device may determine to use X available candidate positions among the Y candidate positions to transmit the DRS according to the detection result of the LBT in the DRS transmission window.
  • QCL information can also be obtained through the SSB index.
  • one method of obtaining the QCL information of the SSB may be to mod L the extended SSB index, and the SSB corresponding to the extended SSB index with the same result has a QCL relationship. As shown in Figure 6, SSBs with extended SSB indexes of 0, 8, 16, 24 have a QCL relationship.
  • LBT can be started before the candidate sending position with an SSB index of 12 is expanded. If the LBT is successful, the SSB can be sent after the expanded SSB index is 12, for example, as shown in FIG. 8.
  • the disadvantage of this method is that it limits the time for the network device to perform LBT and reduces the chance that the network device can perform LBT attempts within the DRS window.
  • the embodiments of the present application provide the following solutions, which can avoid the waste of channels and increase the chances of network equipment to try LBT in the scenario of unlicensed spectrum.
  • FIG. 9 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application.
  • the method 200 includes at least part of the following content.
  • the method in the embodiments of the present application can be used in licensed spectrum and can also be used in unlicensed spectrum.
  • the network device sends instruction information to the terminal device, where the instruction information indicates the SSB actually transmitted in the SSB cluster.
  • the SSB cluster mentioned in the embodiment of the present application may refer to the SSB that can be transmitted at most in a single SSB transmission period (which may be referred to as an SSB transmission window or a time window).
  • the maximum number of SSBs included in an SSB cluster can be L mentioned above.
  • the indication information in the embodiment of the present application may be carried in system information.
  • the indication information may be carried in a system information block (System Information Block, SIB) 1 or a master information block (Master Information Block, MIB).
  • SIB System Information Block
  • MIB Master Information Block
  • the system information carrying the indication information in the embodiment of the present application may belong to the DRS to which the SSB belongs, or may not belong to the DRS at the time.
  • the terminal device When the indication information is carried in the system information, the terminal device can be in a connected state or in an idle state.
  • the content of the indication information carried in the system information for a period of time may be unchanged.
  • the system information is a system information block 1SIB1 or a master information block MIB.
  • the indication information when carried by SIB1, it can be as follows:
  • the above method indicates that a maximum of 64 SSBs are divided into 8 groups at most.
  • the groupPresence indicates which groups have actually transmitted SSBs.
  • 1 represents that there are actually transmitted SSBs in the group, and 0 represents not.
  • inOneGroup indicates the location of the actually transmitted SSB in each group.
  • 1 represents the SSB transmission at that location, and 0 represents no transmission.
  • the indication information is carried in the SIB1.
  • the indication information may be carried in RRC signaling.
  • the SSB actually transmitted in the SSB cluster may be semi-statically configured, and may be carried in a message for semi-static configuration, for example, may be carried in RRC signaling.
  • the terminal device When the indication information is carried in RRC signaling, the terminal device may be in a connected state.
  • the specific implementation can be as follows:
  • the maximum number of SSBs L can be 4, 8, 64, and the corresponding short bitmap, medium bitmap, and long bitmap are used to indicate which The location of the actually transmitted SSB, 1 represents the SSB transmission at that location, and 0 represents no transmission.
  • the indication information is SSB position (ssb-PositionsInBurst) information in the SSB cluster.
  • the indication information can be carried in SIB1 or RRC signaling.
  • the indication information indicates the actually transmitted SSB in the SSB cluster by means of bit mapping.
  • the number of SSBs in the SSB cluster is 8, and the bits included in the indication information are 11001100, which means that the SSBs with indexes 0, 1, 4, and 5 in the 8 SSBs are actually transmitted.
  • the indication information indicates the actually transmitted SSB in the SSB cluster by carrying the index of the actually transmitted SSB.
  • the network device may send the indication information in a variety of ways, for example, sending the indication information through SIB1 and also through RRC.
  • the indication information sent in different ways may have different purposes.
  • the indication information (indicating the actual transmitted SSB) sent by the SIB1 can be used for the measurement of the idle state terminal device.
  • the network device can send the indication information (indicating the actual transmission) through RRC signaling.
  • the transmitted SSB is used for the terminal equipment to perform rate matching.
  • the ssb-PositionsInBurst obtained by the UE through SIB1 is mainly used for idle UE measurement.
  • the base station can configure another ssb-PositionsInBurst through RRC signaling, which is mainly used for rate matching of the UE.
  • the network device may also use the indication information indicated in this way to determine the QCL relationship, so that the network device and the terminal The equipment has the same understanding of the QCL relationship of the SSB.
  • the specific method used to determine the QCL relationship may be preset on the terminal device or configured by the network device, where the configuration information may be carried in the MIB or SIB.
  • the network device can instruct the terminal device to obtain information about the number of SSBs actually transmitted according to the indication information in SIB1 or RRC signaling, so as to determine the QC relationship of the SSBs.
  • the network device determines the QCL relationship of the SSB to be sent according to the number of actually transmitted SSBs indicated in the indication information.
  • the network device may modulo the number of the extended SSB index carried in the SSB to be sent to determine the QCL relationship of the SSB to be sent.
  • the SSB corresponding to the extended SSB index with the same value obtained by modulating the number has a QCL relationship.
  • the extended SSB index carried by the SSB in the embodiment of this application represents the candidate transmission position occupied by the SSB, and the terminal device can perform frame synchronization according to the extended SSB index.
  • the extended SSB index may also be referred to as a candidate transmission position index.
  • the network device sends the SSB to the terminal device.
  • the LBT operation may be performed, and in the case of the success of the LBT, the SSB may be sent.
  • the sending position of the SSB to be sent is determined according to the QCL relationship of the SSB to be sent.
  • the network device when it performs the LBT operation, it can determine the start time of the LBT operation according to the extended SSB index corresponding to the SSB quasi-co-located with the SSB to be sent.
  • the extended SSB index ranges from 0 to 15, the number of SSBs included in the SSB cluster is 8, and the number of actual transmitted SSBs N is 4, then the extended SSB index 0 and extended SSB index 4 have a QCL relationship, that is, QCL.
  • the network device if it successfully performs LBT at time t0 (the starting point of the SSB transmission cycle), it can send the SSB at the position where the extended SSB index is 0, Then, in the subsequent SSB transmission cycle, the SSB can be sent at the candidate sending positions corresponding to the extended SSB index of 0, 4, 8, 12, so as to achieve quasi co-location with the SSB sent at t0.
  • the terminal device receives the instruction information sent by the network device, the instruction information indicates the SSB actually transmitted in the synchronization signal block SSB cluster.
  • the terminal device when the indication information is sent in multiple ways, if the actual transmitted SSB and/or the number indicated by the indication information sent in the multiple ways are different, the terminal device can The instruction information sent in one way determines the actual transmitted SSB and/or its quantity.
  • the network device sends the indication information through both RRC and SIB1 if the number of actually transmitted SSB indicated by the indication information in RRC is different from the number of actually transmitted SSB indicated by the indication information in SIB1, then The actual number of transmitted SSBs indicated by the indication information in SIB1 shall prevail.
  • the terminal device determines the number of actually transmitted SSB.
  • the number N of the actually transmitted SSB can be obtained.
  • the terminal device receives the SSB sent by the network device.
  • the terminal device may detect the SSB in a blind detection manner.
  • the terminal device may perform SSB detection according to the QCL relationship of the SSB to be detected.
  • the terminal device may perform SSB detection according to the actual transmitted SSB and/or the number thereof.
  • the indication information mentioned in the embodiment of this application indicates the SSB actually transmitted in the SSB cluster, which can be used by the terminal device to determine (may roughly judge) which candidates are among the candidate transmission positions of the SSB SSB is sent at the sending location.
  • the terminal device determines the QCL relationship of the received SSB according to the actual number of SSBs transmitted.
  • the terminal device may modulate the extended SSB index carried in the received SSB to the number to determine the quasi co-located QCL relationship of the received SSB.
  • the SSB corresponding to the same modulus result has a QCL relationship.
  • using the extended SSB index to modulate the actual transmitted SSB can be understood as grouping the candidate transmission positions of one SSB transmission period according to the number of actually transmitted SSBs, and each group of candidate transmission positions includes The number of candidate sending locations is equal to the number of SSBs actually transmitted.
  • Each group of candidate sending positions can be used to transmit SSB. If a network device detects that a channel is idle at a certain group of candidate sending positions, it can use the group of candidate sending positions to send SSB.
  • a set of candidate transmission positions can be used to transmit the SSB, wherein at least one SSB transmitted in one SSB transmission period and at least one SSB transmitted in another SSB transmission period have a QCL relationship.
  • the extended SSB index is from 0 to 15, the number of SSBs included in the SSB cluster is 8, and the number of actual transmitted SSBs N is 4, it can be understood as
  • the 16 candidate sending positions can be divided into 4 groups, the extended SSB index of group 1 is 0-3, the extended SSB index of group 2 is 4-7, the SSB index of group 3 is 8-11, and the SSB index of group 4 For 12-15.
  • Each SSB transmission cycle can use a set of candidate transmission positions to send the SSB.
  • the SSBs transmitted at the same position in the candidate transmission position group have a QCL relationship.
  • the embodiment of the present application is not limited to the above description.
  • the SSB may be sent in a manner similar to that shown in FIG.
  • the SSBs sent at the candidate sending positions with the extended SSB index of 0, 4, 8, 12...60 have a QCL relationship
  • SSBs sent at candidate sending positions with extended SSB indexes of 1, 5, 9, 13...61 have QCL relations
  • SSBs sent at candidate sending positions with extended SSB indexes of 2, 6, 10, 14...62 have QCL relations
  • the SSB sent at the candidate sending positions with the extended SSB index of 3, 7, 11, 15...63 has a QCL relationship. If the network device detects that the channel is idle before the extended SSB index is 21, the extended SSB index can be 21, SSB is sent at positions 22, 23, and 24.
  • the actual transmitted SSBs may be continuous.
  • the indication information may not actually indicate the actual SSB transmitted in the SSB cluster. This is because it is assumed that there are 64 SSB candidate transmission positions in an SSB transmission cycle and the number of actual transmitted SSBs is 4.
  • the 64 candidate sending positions are divided into 16 groups, and each group can send the 4 SSBs.
  • the network device detects the SSB before each group of candidate sending positions, it can use the group of candidate sending positions to send the 4 SSBs.
  • SSB In the next SSB transmission period, if the SSB is detected before any group of candidate sending positions, 4 SSBs can be sent in this group, and the 4 SSBs have a QCL relationship with the SSB of the previous period.
  • bit mapping to indicate the actually transmitted SSB
  • a fixed position bit may be used to indicate the actual transmitted SSB.
  • the first 4 bits of the 8 bits can be used to indicate the actual transmitted SSBs. If the number of actually transmitted SSBs is 5, then The first 5 bits of the 8 bits can be used to indicate the actual transmitted SSB.
  • the terminal device performs filtering processing on the received SSB according to the QCL relationship of the received SSB.
  • the terminal device can filter the SSB with the QCL relationship.
  • the terminal device in the idle state can select the random access channel bound to the SSB of a certain beam according to the measurement result ( Random Access Channel, RACH) resource transmission access. Therefore, the acquisition of the QCL relationship is more important for the results of idle state terminal devices.
  • the QCL relationship between the sent SSBs can be guaranteed according to the ssb-PositionsInBurst information indicated in the SIB1, so as to be consistent with the result of the QCL relationship determined by the terminal device.
  • the QCL relationship of the SSB is determined according to the number of actually transmitted SSBs. As shown in FIG. 7, if the number of SSBs included in the SSB cluster (L mentioned in the embodiment of this application) is used to determine the QCL relationship, It may cause the network equipment to wait a long time to send the SSB that has a QCL relationship with the sent SSB when detecting that the channel is idle, and the number of SSBs actually transmitted to determine the QCL relationship of the SSB will avoid the need for the network equipment
  • the SSB can be sent after waiting for a long time. For example, in the case shown in FIG.
  • the SSB can be sent at the candidate sending position index of 0. While ensuring that the terminal equipment accurately obtains the QCL relationship between the SSBs, it avoids the problem that channel resources between the starting position of the channel occupation and the starting position of the SSB can not be effectively used, thereby improving the utilization of system resources in the unlicensed frequency band effectiveness.
  • the terminal device obtains the number of actually transmitted SSBs through the actually transmitted SSBs in the SSB cluster indicated in the indication information, and determines the QCL relationship based on the actual number of transmitted SSBs, which can avoid the SSB cluster
  • the number of SSBs in the middle determines the channel waste caused by the QCL relationship, and the use of indication information indicating the actual transmitted SSB to determine the QCL relationship of the SSB can avoid the need to send an additional indication information (for example, carried in MIB, SIB or In the RRC signaling,) is used to indicate the number used to determine the QCL relationship of the SSB, so that the signaling overhead can be reduced.
  • 210 and 230 may be executed simultaneously.
  • 240 and 260 can be executed simultaneously.
  • 270 can be executed before 260.
  • FIG. 11 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 includes a communication unit 310 and a processing unit 320; among them,
  • the communication unit 310 is configured to receive instruction information sent by a network device, where the instruction information indicates the SSB actually transmitted in the synchronization signal block SSB cluster;
  • the processing unit 320 is configured to: determine the number of actually transmitted SSBs according to the actual transmitted SSB; and determine the quasi co-located QCL relationship of the received SSBs according to the number.
  • the indication information is carried in system information or radio resource control RRC signaling.
  • the system information is a system information block 1SIB1 or a master information block MIB.
  • the indication information is carried in the SIB1.
  • the indication information is the SSB position ssb-PositionsInBurst information in the SSB cluster.
  • the indication information indicates the actually transmitted SSB in the SSB cluster by means of bit mapping.
  • the processing unit 320 is further configured to:
  • the extended SSB index carried in the received SSB is modulo the number to determine the quasi co-located QCL relationship of the received SSB.
  • the processing unit 320 is further configured to:
  • filtering processing for the received SSB is performed.
  • the terminal device is used in an unlicensed spectrum.
  • terminal device 300 may be used to implement the corresponding operations implemented by the terminal device in the method embodiments, and for the sake of brevity, details are not described herein again.
  • FIG. 12 is a schematic block diagram of a network device 400 according to an embodiment of the present application.
  • the network device 400 includes a communication unit 410 and a processing unit 420. among them,
  • the communication unit 410 is configured to send instruction information to the terminal device, the instruction information indicating the SSB actually transmitted in the synchronization signal block SSB cluster;
  • the processing unit 420 is configured to determine the quasi co-located QCL relationship of the SSB to be sent according to the number of actually transmitted SSBs indicated in the indication information.
  • the indication information is carried in system information or radio resource control RRC signaling.
  • the system information is a system information block SIB1 or a main information block MIB.
  • the indication information is carried in the SIB1.
  • the indication information is the SSB position ssb-PositionsInBurst information in the SSB cluster.
  • the indication information indicates the actually transmitted SSB by means of bit mapping.
  • the processing unit 420 is further configured to:
  • the extended SSB index carried in the SSB to be sent is modulo the number to determine the QCL relationship with the SSB to be sent.
  • the processing unit 420 is further configured to:
  • the network device is used in an unlicensed spectrum.
  • network device 400 may be used to implement the corresponding operations implemented by the network device in the method embodiments, and for the sake of brevity, details are not repeated here.
  • FIG. 13 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 shown in FIG. 13 includes a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 500 may further include a memory 520.
  • the processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.
  • the memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.
  • the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 500 may specifically be a network device in an embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 500 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For simplicity , I won’t repeat it here.
  • FIG. 14 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 600 shown in FIG. 14 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the chip 600 may further include an input interface 630.
  • the processor 610 can control the input interface 630 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 600 may further include an output interface 640.
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 14 is a schematic block diagram of a communication system 700 according to an embodiment of the present application. As shown in FIG. 14, the communication system 700 includes a terminal device 710 and a network device 720.
  • the terminal device 710 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 720 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • I will not repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un procédé de communication sans fil, un dispositif terminal et un dispositif réseau, qui peuvent déterminer des relations QCL de SSB et peuvent également conserver des ressources de canal et un temps système de signalisation. Le procédé comprend les étapes suivantes: le dispositif terminal reçoit des informations d'indication envoyées par un dispositif réseau, les informations d'indication indiquant des blocs de signal de synchronisation réellement transmis (SSB) parmi une grappe SSB; sur la base des SSB réellement transmises, le dispositif terminal détermine la quantité des SSB; sur la base de ladite quantité, le dispositif terminal détermine des relations de quasi colocalisation (QCL) des SSB reçus.
PCT/CN2019/075959 2019-02-22 2019-02-22 Procédé de communication sans fil, dispositif terminal et dispositif réseau WO2020168575A1 (fr)

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CN201980073840.1A CN113039842B (zh) 2019-02-22 2019-02-22 无线通信方法、终端设备和网络设备

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