WO2020125635A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2020125635A1
WO2020125635A1 PCT/CN2019/126029 CN2019126029W WO2020125635A1 WO 2020125635 A1 WO2020125635 A1 WO 2020125635A1 CN 2019126029 W CN2019126029 W CN 2019126029W WO 2020125635 A1 WO2020125635 A1 WO 2020125635A1
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WIPO (PCT)
Prior art keywords
terminal device
beam information
signaling
information
network
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PCT/CN2019/126029
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English (en)
Chinese (zh)
Inventor
张向东
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华为技术有限公司
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Publication of WO2020125635A1 publication Critical patent/WO2020125635A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

Definitions

  • This application relates to the field of communication technology, and in particular, to a communication method and device.
  • the communication of the terminal equipment can be divided into side link (SL) communication and Uu air interface communication.
  • SL communication is used for communication between terminal devices and terminal devices
  • Uu air interface communication is used for communication between terminal devices and base stations.
  • NR new radio
  • the present application provides a communication method and device to solve the problem that two terminal devices use beamforming technology to communicate on an auxiliary link.
  • a communication method including: a first terminal device determining first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link, The process includes: transmitting data information, and/or transmitting control information, the control information may be control signaling, or auxiliary signaling, etc.; the first terminal device sends the first beam information.
  • the first terminal device when the first terminal device and the second terminal device communicate using beamforming technology, the first terminal device may indicate the beam of data transmission to the second terminal device, thereby facilitating the first The two terminal devices select the corresponding second beam and receive data to ensure the communication quality of the two.
  • sending the first beam information by the first terminal device includes: the first terminal device sends first signaling to the second terminal device, and the first signaling carries The first beam information.
  • the first terminal device may directly send the first beam information to the second terminal device, and the rate is relatively fast.
  • sending the first beam information by the first terminal device includes: the first terminal device sends second signaling to a network device, where the second signaling carries the First beam information.
  • the first terminal device may send the first beam information to the network device, and then the network device forwards the first beam information to the second terminal device, which has high reliability.
  • the first terminal device determining the first beam information includes: the first terminal device receiving the monitoring beam information of the second terminal device; the first terminal device according to the monitoring Beam information, to determine the first beam information.
  • the first terminal device determines the first beam according to the monitoring beam information of the second terminal device, thereby ensuring that the first terminal device uses the data sent by the first beam, and the second terminal device It can receive better and ensure the communication quality.
  • the first terminal device receiving the monitoring beam information of the second terminal device includes: the first terminal device receives third signaling sent by the second terminal device, and the third The signaling carries the monitoring beam information of the second terminal device; or, the first terminal device receives the fourth signaling sent by the network device, and the fourth signaling carries the second terminal device's Monitor beam information.
  • the monitoring beam information of the second terminal device includes the beam scanning configuration of the second terminal device, and the method further includes: the first terminal device according to the second terminal device To determine the first time, which is the time when the first terminal device transmits data on the secondary link.
  • the second terminal device side may be divided into a beam scanning period and a data transmission period.
  • the second terminal device may send the beam scanning configuration (including the beam scanning period) to the first terminal device, thereby preventing the first terminal device from sending data to the second terminal device during the beam scanning period of the second terminal device.
  • the method further includes: the first terminal device sends an identifier of the second terminal device.
  • the method further includes: the first terminal device sends a first indication, where the first indication is used to indicate whether the first terminal device uses the beamforming technology on the secondary link For data transmission.
  • the second terminal device may determine whether the first terminal device uses beamforming technology to communicate with itself. For example, if the first terminal device uses beamforming technology to send data, correspondingly, the second terminal device uses beamforming technology to receive data. If the first terminal device does not use beamforming technology to send data, accordingly, the second terminal device does not use beamforming technology to receive data to further ensure communication quality.
  • the method further includes: the first terminal device receives a second indication sent by a network device, where the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology Data transmission is performed on the secondary link.
  • whether the first terminal device currently uses the beamforming technology may be instructed by the network device.
  • the method further includes the first terminal device sending at least one of a radio access network type or a core network type of the first terminal device.
  • the first terminal device may send the access network type or core network type to the second terminal device, thereby facilitating the second terminal device according to the core network type or access of different terminal devices Network type for further processing, for example, selecting relay terminal equipment, etc.
  • a communication method including: a second terminal device receiving first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link; the first The second terminal device determines a second beam according to the first beam information, and the second beam is a beam used by the second terminal device for data transmission on the auxiliary link.
  • receiving the first beam information by the second terminal device includes: receiving, by the second terminal device, first signaling sent by the first terminal device, the first signaling carrying There is the first beam information.
  • the second terminal device receiving the first beam information includes: the second terminal device receives fifth signaling sent by the network device, and the fifth signaling carries the first A beam of information.
  • the method further includes: the second terminal device sends third signaling to the first terminal device, where the third signaling carries monitoring of the second terminal device Beam information; or, the second terminal device sends sixth signaling to the network device, where the sixth signaling carries monitoring beam information of the second terminal device.
  • the method further includes: the second terminal device receives an identifier of the second terminal device.
  • the method further includes: the second terminal device receives a first indication, where the first indication is used to indicate whether the first terminal device uses or does not use beamforming technology on the secondary link For data transmission.
  • the method further includes the second terminal device receiving at least one of a radio access network type or a core network type of the first terminal device.
  • a communication method including: a network device receiving first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link; The second terminal device sends the first beam information.
  • the network device sending the first beam information to the second terminal device includes: the network device sending fifth signaling to the second terminal device, the fifth signaling Carries the first beam information.
  • the network device receiving the first beam information includes: the network device receiving second signaling sent by the first terminal device, where the second signaling carries the first A beam of information.
  • the method further includes: the network device receiving sixth signaling sent by the second terminal device, where the sixth signaling carries a monitoring beam of the second terminal device information.
  • the method further includes: the network device sends fourth signaling to the first terminal device, where the fourth signaling carries monitoring beam information of the second terminal device .
  • the method further includes the network device sending a second indication to the first terminal device, where the second indication is used to indicate whether the first terminal device uses beamforming or not Technology transmits data on the secondary link.
  • a communication apparatus including: a processing unit for determining first beam information indicating the beam used by the first terminal device for data transmission on a secondary link; a transceiver unit For sending the first beam information.
  • the transceiver unit when the transceiver unit sends the first beam information, it is specifically used to: send first signaling to a second terminal device, where the first signaling carries the first beam information .
  • the transceiver unit when the transceiver unit sends the first beam information, it is specifically used for: the first terminal device sends second signaling to the network device, and the second signaling carries the First beam information.
  • the processing unit determines the first beam information when it is specifically configured to: control the transceiver unit to receive the monitoring beam information of the second terminal device; and determine the first beam according to the monitoring beam information information.
  • the transceiver unit when the transceiver unit receives the monitoring beam information of the second terminal device, it is specifically used to: receive the third signaling sent by the second terminal device, and the third signaling carries The monitoring beam information of the second terminal device; or receiving fourth signaling sent by the network device, where the fourth signaling carries the monitoring beam information of the second terminal device.
  • the monitoring beam information of the second terminal device includes the beam scanning configuration of the second terminal device
  • the processing unit is further configured to: according to the beam scanning configuration of the second terminal device To determine a first time, where the first time is the time when the first terminal device transmits data on the secondary link.
  • the transceiver unit is further configured to: send the identifier of the second terminal device.
  • the transceiving unit is further configured to: send a first indication, where the first indication is used to indicate whether the first terminal device uses or does not use beamforming technology to perform data transmission on the secondary link .
  • the transceiver unit is further configured to receive a second indication sent by a network device, where the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology on the secondary link For data transmission.
  • the transceiver unit is further configured to: send at least one of a radio access network type or a core network type of the first terminal device.
  • a communication method including: a transceiver unit configured to receive first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link; and a processing unit , Used to determine a second beam according to the first beam information, where the second beam is a beam used by the second terminal device for data transmission on a secondary link.
  • the transceiver unit when the transceiver unit receives the first beam information, it is specifically used to receive the first signaling sent by the first terminal device, where the first signaling carries the first A beam of information.
  • the transceiver unit when the transceiver unit receives the first beam information, it is specifically used to receive fifth signaling sent by a network device, where the fifth signaling carries the first beam information.
  • the transceiver unit is further configured to: send third signaling to the first terminal device, where the third signaling carries monitoring beam information of the second terminal device; or , Sending a sixth signaling to the network device, where the sixth signaling carries the monitoring beam information of the second terminal device.
  • the transceiver unit is further configured to: receive the identifier of the second terminal device.
  • the transceiving unit is further configured to: receive a first indication, and the first indication is used to indicate whether the first terminal device uses or does not use beamforming technology to perform data transmission on the secondary link .
  • the transceiver unit is further configured to: receive at least one of a radio access network type or a core network type of the first terminal device.
  • a communication method including: a transceiver unit configured to receive first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link; The transceiver unit is also used to send the first beam information to the second terminal device.
  • the transceiving unit when the transceiving unit sends the first beam information to a second terminal device, it is specifically used to: send a fifth signaling to the second terminal device, the fifth signaling Carries the first beam information.
  • the transceiver unit when the transceiver unit receives the first beam information, it is specifically configured to: receive second signaling sent by the first terminal device, where the second signaling carries the first A beam of information.
  • the transceiver unit is further configured to: receive sixth signaling sent by the second terminal device, where the sixth signaling carries monitoring beam information of the second terminal device.
  • the transceiver unit is further configured to send a fourth signaling to the first terminal device, where the fourth signaling carries the monitoring beam information of the second terminal device.
  • the transceiver unit is further configured to send a second indication to the first terminal device, where the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology. Data transmission is performed on the secondary link.
  • a communication apparatus including: a processor for determining first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link; a transceiver For sending the first beam information.
  • the transceiver when the transceiver sends the first beam information, it is specifically used to send first signaling to a second terminal device, where the first signaling carries the first beam information .
  • the transceiver when the transceiver sends the first beam information, it is specifically used for: the first terminal device sends second signaling to the network device, and the second signaling carries the First beam information.
  • the processor determines the first beam information when it determines the first beam information, it is specifically configured to: control the transceiver to receive the monitoring beam information of the second terminal device; and determine the first beam according to the monitoring beam information information.
  • the transceiver when the transceiver receives the monitoring beam information of the second terminal device, it is specifically used to receive the third signaling sent by the second terminal device, and the third signaling carries The monitoring beam information of the second terminal device; or receiving fourth signaling sent by the network device, where the fourth signaling carries the monitoring beam information of the second terminal device.
  • the monitoring beam information of the second terminal device includes the beam scanning configuration of the second terminal device
  • the processor is further configured to: according to the beam scanning configuration of the second terminal device To determine a first time, where the first time is the time when the first terminal device transmits data on the secondary link.
  • the transceiver is further configured to: send the identification of the second terminal device.
  • the transceiver is further configured to: send a first indication, where the first indication is used to indicate whether the first terminal device uses or does not use beamforming technology to perform data transmission on the secondary link .
  • the transceiver is further configured to: receive a second indication sent by a network device, where the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology on the secondary link For data transmission.
  • the transceiver is further configured to: send at least one of a radio access network type or a core network type of the first terminal device.
  • a communication method including: a transceiver for receiving first beam information indicating the beam used by the first terminal device for data transmission on a secondary link; and a processor , Used to determine a second beam according to the first beam information, where the second beam is a beam used by the second terminal device for data transmission on a secondary link.
  • the transceiver when the transceiver receives the first beam information, it is specifically used to receive the first signaling sent by the first terminal device, where the first signaling carries the first A beam of information.
  • the transceiver when the transceiver receives the first beam information, it is specifically used to receive fifth signaling sent by a network device, where the fifth signaling carries the first beam information.
  • the transceiver is further configured to: send third signaling to the first terminal device, where the third signaling carries monitoring beam information of the second terminal device; or , Sending a sixth signaling to the network device, where the sixth signaling carries the monitoring beam information of the second terminal device.
  • the transceiver is further configured to: receive the identification of the second terminal device.
  • the transceiver is further configured to: receive a first indication, and the first indication is used to indicate whether the first terminal device uses or does not use beamforming technology to perform data transmission on the secondary link .
  • the transceiver is further configured to: receive at least one of a radio access network type or a core network type of the first terminal device.
  • a communication method including: a transceiver for receiving first beam information, the first beam information indicating a beam used by the first terminal device for data transmission on a secondary link; The transceiver is also used to send the first beam information to the second terminal device.
  • the transceiver when the transceiver sends the first beam information to the second terminal device, the transceiver is specifically configured to send fifth signaling to the second terminal device, and the fifth signaling Carries the first beam information.
  • the transceiver when the transceiver receives the first beam information, it is specifically used to: receive second signaling sent by the first terminal device, where the second signaling carries the first A beam of information.
  • the transceiver is further configured to: receive sixth signaling sent by the second terminal device, where the sixth signaling carries monitoring beam information of the second terminal device.
  • the transceiver is further configured to send a fourth signaling to the first terminal device, where the fourth signaling carries the monitoring beam information of the second terminal device.
  • the transceiver is further configured to send a second indication to the first terminal device, where the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology. Data transmission is performed on the secondary link.
  • a computer-readable instruction is provided.
  • the method according to any one of the above aspects is implemented.
  • a chip is provided, which is connected to a memory and used to read and execute a software program stored in the memory to implement the method described in any one of the above aspects.
  • a computer storage medium including computer readable instructions, which when executed, causes the computer to perform the method according to any one of the above aspects.
  • a system including the first terminal device described in the fourth or seventh aspect and the second terminal device described in the fifth or eighth aspect.
  • the network device according to the sixth aspect or the eighth aspect may be included.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of this application.
  • 3a, 3b, 4a, and 4b are schematic diagrams of transmitting first beam information provided by an embodiment of the present application.
  • 5a, 5b, 6a, and 6b are schematic diagrams of transmission monitoring beam information provided by embodiments of the present application.
  • FIG. 7 is a schematic diagram of a type of transmission radio access network or core network provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a fleet provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is another schematic diagram of a communication device provided by an embodiment of the present application.
  • the network device may be a device in the network that connects the terminal device to the wireless network.
  • the network device is a node in a wireless access network, and may also be called a base station, and may also be called a radio access network (radio access network, RAN) node (or device).
  • RAN radio access network
  • some examples of network equipment are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), home base station (eg, home evolved Node B, or home Node B, HNB) , Baseband unit (BBU), or WiFi access point (AP), etc.
  • the network device may include a centralized unit (CU) node and a distributed unit (DU) node. This structure splits the protocol layer of the eNB in the long term evolution (LTE) system. Part of the protocol layer functions are centralized in the CU. The remaining part or all of the protocol layer functions are distributed in the DU. Centralized control of DU.
  • LTE long term evolution
  • Terminal equipment also called user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, self-driving wireless terminals, wireless terminals in remote medical surgery, and smart grids Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • MID mobile internet devices
  • VR virtual reality
  • AR augmented reality
  • Wireless terminals wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • SL Sidelink
  • PSSCH physical sidelink shared channel
  • PSCCH physical sidelink control channel
  • SA scheduling allocation
  • V2X Internet of Vehicles
  • V2X applications can include: vehicles and vehicles (V2V), vehicles and roadside infrastructure (V2I), vehicles and pedestrians (vehicle to pedestrians, V2P), and vehicle and application servers (vehicle toto network) , V2N), etc.
  • Beamforming For the transmitting device, the transmitting antenna is no longer omnidirectional, but is designed through the antenna, so that the transmitting antenna is only partially covered in a certain direction within a certain time, and then through beam scanning (that is, adjustment The process of antenna transmission direction) to perform spatial coverage. For the receiving device, within a certain period of time, it only receives in a certain direction, and the receiving device completes the receiving coverage by scanning the receiving beam.
  • the beam of the signal transmitted by the transmitting device may be referred to as a transmit beam
  • the beam of the signal received by the receiving device may be referred to as a receive beam.
  • Beam It can be understood as a spatial resource, and can refer to a transmission or reception precoding vector with energy transmission directivity. And, the sending or receiving precoding vector can be identified by index information.
  • the energy transmission directivity may refer to that the energy of the transmitted signal is collected in a certain spatial position through the precoding process, and the signal received by the precoding vector for precoding process has better received power, such as Satisfying the signal-to-noise ratio of reception and demodulation, etc.; the directivity of energy transmission may also mean that the same signal sent from different spatial positions received by the precoding vector has different received power.
  • the same communication device may have different precoding vectors, and different devices may also have different precoding vectors, that is, corresponding to different beams.
  • one communication device may use one or more of multiple different precoding vectors at the same time, that is, one beam or multiple beams may be formed at the same time.
  • the beam information may be identified by index information.
  • the index information may correspond to the resource identity (ID) of the configured UE, for example, the index information may correspond to the configured channel state information reference signal (channel status information reference) signal, CSI-RS) ID or resource may also be the ID or resource of the corresponding configured sounding reference signal (SRS).
  • ID resource identity
  • the index information may correspond to the configured channel state information reference signal (channel status information reference) signal, CSI-RS) ID or resource may also be the ID or resource of the corresponding configured sounding reference signal (SRS).
  • SRS configured sounding reference signal
  • the index information may also be index information carried by a beam or a signal carried explicitly or implicitly by a channel, for example, the index information includes but is not limited to a synchronization signal sent by a beam or a broadcast channel indication Index information of the beam.
  • the beam pair may include a transmitting beam (Tx beam) at the transmitting end and a receiving beam (Rx beam) at the receiving end, or, also referred to as an uplink beam or a downlink beam.
  • the beam pair may include a gNB Tx beam transmission beam or a UE Rx beam reception beam, or a UE Tx beam transmission beam or a gNB Rx beam reception beam, where the transmission beam may also be understood as a transmission beam.
  • signal may also be referred to as “signal”, “information”, or “message”.
  • Words such as “first” and “second” are only used to distinguish the description, and cannot be understood as indicating or implying relative importance, or as indicating or implying the order.
  • FIG. 1 shows a communication system 100 provided by an embodiment of the present application.
  • the communication system 100 includes a first terminal device 101 and a second terminal device 102.
  • the first terminal device 101 and the second terminal device 102 may use beamforming technology to perform data transmission on the auxiliary link SL.
  • the first terminal device 101 and the second terminal device 102 use the beamforming technology to perform data transmission as follows:
  • the first terminal device 101 determines the first beam, and then sends data on the first beam.
  • the second terminal device determines the second beam according to the first beam, and receives data on the second beam. It can be seen that, for the above scenario, the second terminal device needs to obtain the first beam information of the first terminal device.
  • a flow of a communication method may notify a second terminal device of the first beam information of the first terminal device.
  • the first terminal device in the flow may be the first terminal device in FIG. 1 101.
  • the second terminal device may be the second terminal device 102 in FIG. It can be understood that the functions of the terminal device may also be implemented by a chip applied to the terminal device, or supported by other devices to support the terminal device.
  • the process can include:
  • the first terminal device determines first beam information, which indicates the beam used by the first terminal device for data transmission on the secondary link SL.
  • the data transmission process includes: transmission of data information or transmission control information, etc.
  • the control information may be control signaling, or auxiliary signaling.
  • the first beam information may indicate one or more beams.
  • the first beam information may specifically indicate the beam used by the first terminal device in the secondary link SL data transmission this time, or the first beam information indicates The first terminal device uses the beam used for the secondary link SL data transmission for the Xth time in the future, or the first beam information indicates the beam used by the first terminal device for the secondary link SL data transmission in the future t time range.
  • the first beam information may be represented by a bitmap (bitmap), it is set that the first terminal device side includes N beams, and an N-bit binary bitmap may be adopted to represent the first beam information.
  • bitmap bitmap
  • the value of N is 64, and the numbers of 64 beams are 0 to 63 in sequence. If the first terminal device uses beam 1 for data transmission on the secondary link SL, the first beam information may be expressed as 0100, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000. 0000.
  • the first beam information may be represented by a bitmap. It is set that the first terminal device side includes N beams, and the N beams may be divided into M groups.
  • the first beam information includes the first terminal device The group number of the beam that transmits data on the secondary link and the number of the beam in the group. For example, the value of N is 64, the number of 64 beams is 0 ⁇ 63, and the 64 beams are divided into 8 groups, each group includes 8 beams, and the number of 8 beams is 0-7. The 8 beams included are numbered 0-7. If the first terminal device currently uses beam 1 in the secondary link to perform data transmission on the secondary link SL, the first beam information may be expressed as: 1000 0000 0100 0000.
  • 1000 0000 represents the number of beam group 0 where beam 1 is located, and 01000 0000 represents the number of beam 1 in beam group 0.
  • N-bit binary bitmap to represent N beams
  • air interface overhead can be saved.
  • the same number of beams in each beam group included, or different, for example, a group of available beams 4-bit binary representation, comprising a set of beams 24 beams.
  • Beam set 2 is represented by 8-bit binary, two beam set includes beams 28.
  • Beam group 3 is expressed in 64-bit binary, and beam group 3 includes 2 64 beams.
  • S202 The first terminal device sends the first beam information.
  • S203 The second terminal device receives the first beam information.
  • the second terminal device determines a second beam according to the first beam information, where the second beam is a beam used by the second terminal device for data transmission on the auxiliary link SL.
  • the second terminal device side may include multiple beams, and the second terminal device may select a beam that meets communication quality requirements from the multiple beams according to the first beam information, and use the selected beam in the secondary chain For data transmission on the SL, the beam selected by the second terminal device is the above-mentioned second beam.
  • the second terminal device may determine the beam indicated by the first beam information, determine the direction of the beam, and select the second beam based on the beam direction, and ensure that the receiving direction of the second beam The emission direction of the first beam is relatively accurate.
  • the second terminal device may measure the beam of the first terminal according to the first beam information, and select the beam for data transmission on the secondary link SL according to the measurement result,
  • the beam selected by the second terminal device is the above-mentioned second beam.
  • the first terminal device may directly send the first beam information to the second terminal device, or, as shown in FIG. 4a, the first terminal device may The beam information is sent to the network device, and the network device forwards the first beam information to the second terminal device.
  • the first terminal device may send first signaling to the second terminal device, where the first signaling carries the first beam information.
  • the second terminal device receives the first signaling.
  • the first signaling may be a broadcast signal, and a field may be added to the existing broadcast signal to carry the first beam information. Or, design a new broadcast signal to carry the first beam information.
  • the first terminal device may broadcast the first beam information in a master information block (master information block, MIB), and the broadcast signal may be expressed as:
  • the " ssb-PositionsInBurst-Rx" field in the bold part of the above horizontal line indicates the first beam information.
  • the first beam information can be expressed in any of the following ways:
  • the first terminal device side includes 64 beams, and the 64 beams are divided into 8 groups, and each group includes 8 beams as an example for description.
  • the "inOneGroup” field indicates the number of the beam group to which the first beam belongs
  • the "groupPresence” field indicates the number of the first beam in the beam group.
  • way 2 is an example in which the first beam information is directly represented by an N-bit bitmap.
  • the first terminal device side includes N beams, for example, N is less than or equal to 4, the "shortBitmap” field can be used to represent the first beam information, N is less than or equal to 8, the “mediumBitmap” field can be used to represent the first beam information, N is less than or equal to 64, and the “longBitmap” field can be used to represent the first beam information.
  • the value of N is 4, 8, or 64, which is merely an example and does not constitute a limitation on the embodiments of the present application.
  • the value of N may be arbitrarily set.
  • the value of N may be determined according to the number of beams on the auxiliary link.
  • the first terminal device sends second signaling to the network device, where the second signaling carries first beam information.
  • the network device receives the second signaling, obtains the first beam information in the second signaling, and sends the third signaling to the second terminal device, where the third signaling carries the first beam information.
  • the second signaling may be radio resource control (radio resource control, RRC) signaling
  • the third signaling may be RRC signaling, side link control information (SCI), downlink control Information (down control information, DCI) or broadcast signal, etc.
  • a field may be added to existing RRC signaling, SCI, DCI, or broadcast message, and the added field is used to carry the first beam information.
  • a new format of RRC signaling, SCI, DCI, or broadcast message may be designed to carry the first beam information. If the network device broadcasts the signal, it broadcasts the first beam information. After receiving the broadcast signal, the terminal device may acquire necessary configuration information of the first terminal device according to the first beam information. If a terminal device (for example, a second terminal device) needs to establish unicast communication with the first terminal device, the terminal device may establish unicast communication with the first terminal device based on the obtained necessary configuration information. Further, by Unicast communication, negotiate and determine the beams required for unicast communication.
  • the first terminal device may determine the first beam information based on preset rules in the configured multiple beams. For example, the first terminal device may use information corresponding to a beam whose communication quality meets a preset condition as the first beam information. Alternatively, the first terminal device may receive the monitoring beam information of the second terminal device, and determine the first beam information based on the monitoring beam information.
  • the monitoring beam information may include at least one of a beam received by the second terminal device from the data of the first terminal device, configuration information of beam scanning performed by the second terminal device, or beam information obtained by beam scanning performed by the second terminal device, etc. .
  • the second terminal device may directly send the monitoring beam information to the first terminal device, or, as shown in FIG. 6a, the second terminal device may send the monitoring beam information to the network device, and the network device forwards the monitoring beam information to The first terminal device.
  • the second terminal device may send a fourth signaling to the first terminal device, where the fourth signaling carries monitoring beam information.
  • the first terminal device receives the fourth signaling.
  • the fourth signaling may be a broadcast signal on the secondary link SL.
  • the first terminal device may broadcast a monitoring beam signal in the MIB, and the broadcast signal may be expressed as:
  • the " ssb-PositionsInBurst-Rx" field in the bold part of the horizontal line is used to indicate the monitoring beam information of the second terminal device.
  • the second terminal device sends fifth signaling to the network device, where the fifth signaling carries monitoring beam information.
  • the network device receives the fifth signaling, obtains the monitoring beam information in the fifth signaling, and sends the sixth signaling to the first terminal device, where the sixth signaling carries the monitoring beam information.
  • the first terminal device receives the sixth signaling.
  • the fifth signaling may be RRC signaling
  • the sixth signaling may be RRC signaling, SCI, DCI, or broadcast signal.
  • a new field can be added to the existing RRC signaling, SCI, DCI, or broadcast message. The new field is used to carry the monitoring beam information, or a new format of RRC signaling, SCI, DCI, or broadcast message can be designed. Etc., used to carry monitoring beam information.
  • the second terminal device may monitor the beam of the first terminal device, obtain monitoring beam information, and send the monitoring beam information to the first terminal device.
  • the first terminal device may select a beam satisfying the condition (such as a beam with the best monitoring beam quality) as the first beam according to the monitoring beam information.
  • the second terminal device may monitor the beam of the first terminal device to obtain the monitoring result, and select a beam satisfying the condition (such as the beam with the best monitoring quality) as the first beam according to the monitoring result.
  • the monitoring beam information carries the information of the first beam and is sent to the first terminal device.
  • the first terminal device may use the first beam carried in the monitoring beam information as the beam used for data transmission with the second terminal device on the secondary link.
  • the monitoring beam information of the second terminal device may include the beam scanning configuration of the second terminal device, and the beam scanning configuration may include the beam scanning period of the second terminal device and each beam The duration of the beam scan during the scan period, etc.
  • the process shown in FIG. 2 above further includes: the first terminal device determining the first time according to the beam scanning configuration of the second terminal device, where the first time is sent by the first terminal device on the secondary link Time for business data.
  • the second terminal device when it adopts the beamforming technology, it may include a beam scanning period and a data transmission period.
  • the second terminal device performs beam scanning and does not perform data transmission.
  • the second terminal device performs data transmission without performing beam scanning. If the first terminal device sends data during the beam scanning period of the second terminal device, the second terminal device cannot receive it. Therefore, in order to avoid the situation that the second terminal device cannot receive the transmission data, the first terminal device should avoid the beam scanning period of the second terminal device and communicate with the first terminal device.
  • the second terminal device may send the beam scanning configuration of the second terminal device to the first terminal device, and when receiving the beam scanning configuration, the first terminal device may determine the beam scanning period of the first terminal device Then, the first time is determined according to the beam scanning period of the first terminal device to avoid transmitting service data to the second terminal service within the beam scanning period of the second terminal device.
  • the beam scanning configuration sent by the second terminal device to the first terminal device may include the beam scanning configuration of the second terminal device for the third terminal device. That is, the first terminal device may determine the first time according to the configuration that the second terminal device performs beam scanning for terminal devices other than the second terminal device (such as the third terminal device) to avoid the second terminal device Transmit service data to the second terminal device within the beam scanning period of.
  • the first beam information shown in FIG. 2 may be associated with a certain terminal device, and if associated with a certain terminal device, the first terminal device may also send the first beam information to the associated terminal device ,
  • the identifier of the associated terminal device may be carried in the same signaling as the first beam information, or may be carried in different signaling.
  • the process shown in FIG. 2 may further include: the first terminal The device sends the identifier of the second terminal device.
  • the second terminal device receives the identifier of the second terminal device.
  • the identifier of the second terminal device and the first beam information may be carried in the same signaling or may be carried In different signaling.
  • the first terminal device may use beamforming technology to perform data transmission on the secondary link SL with the second terminal device, or may use an omnidirectional antenna to perform data on the secondary link SL with the second terminal device transmission.
  • the second terminal device may use beamforming technology to receive data, or the second terminal device may use an omnidirectional antenna to receive data; if the first terminal device uses omnidirectional The antenna technology transmits data, and the second terminal device may use an omnidirectional antenna to receive data, or the second terminal device may use beamforming technology to receive data.
  • the first terminal device before transmitting data on the secondary link, the first terminal device needs to inform the second terminal device whether to use beamforming technology.
  • the first terminal device may send a first indication, and correspondingly, the second terminal device receives the first indication, where the first indication is used to indicate whether the first terminal device uses or does not use beamforming technology in the secondary chain Data transmission on the road.
  • the first indication when the first terminal device uses beamforming technology to perform data transmission on the secondary link, the first indication may be expressed as 1, otherwise, the first indication may be expressed as 0.
  • the foregoing first beam information may implicitly indicate that the first terminal device uses or does not use beamforming technology to perform data transmission on the secondary link.
  • the first beam information is represented by a bitmap
  • the N-bit binary bits corresponding to the bitmap are all zero, it may indicate that the first terminal device does not use beamforming technology to perform data transmission on the secondary link
  • the N-bit binary bits corresponding to the bitmap include at least one non-zero bit, it may indicate that the first terminal device uses beamforming technology to perform data transmission on the secondary link.
  • the network device may indicate whether the first terminal device uses beamforming technology to perform data transmission on the secondary link.
  • the network device may send a second indication.
  • the first terminal device receives the second indication.
  • the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology on the secondary link. Perform data transfer. For example, if the network device instructs the first terminal device to use beamforming technology for data transmission on the secondary link, the second indication may represent 1, otherwise it represents 0.
  • the first terminal device may send at least one of the access network type or the core network type of the first terminal device, and correspondingly, the second terminal device may receive at least one of the access network type or the core network type.
  • the access network type may be a long term evolution (LTE) type or a new radio (NR) type, etc.
  • the core network type may be an LTE type or NR type.
  • At least one of the access network type or the core network type may be carried in the same signaling or different signaling with the first beam information.
  • UE2 and UE3 may be of the radio access network (radio access network (RAN) type or core network (CN) type At least one of them is sent to UE1.
  • RAN radio access network
  • CN core network
  • UE1 can select one of UE2 and UE3 as the relay UE according to the type of the core network or the radio access network. If the radio access network type and the core network type of UE3 are both NR, then UE1 may select UE3 as a relay UE.
  • the first terminal device may send a broadcast signal, and the broadcast signal carries the radio access network type and the core network type of the first terminal device.
  • the first terminal device may broadcast the radio access network type and/or core network type in the MIB, and the broadcast signal may be expressed as:
  • the " RAN&CN-Type " field in the bold part of the horizontal line indicates the radio access network type and the core network type of the first terminal device.
  • the communication method can be applied to a fleet scenario.
  • the process may be:
  • the network device sends configuration information, where the configuration information is used to indicate at least one of the number or location of beams sent by the terminal device.
  • the terminal device receives the configuration information.
  • the terminal device determines at least one of the number or position of beams transmitted by itself according to the configuration information.
  • the network device may set different configuration information for different terminal devices, for example, for the front, rear or some special vehicles in the fleet, the number or position of beams for omnidirectional coverage scanning may be set However, for the remaining vehicles in the fleet, it is only necessary to configure the number or position of beams for longitudinal coverage scanning.
  • the terminal device may send report information, and correspondingly, the network device receives the report information.
  • the report information may indicate the terminal device’s own position in the fleet, whether it is the front, The rear or special vehicles, etc.
  • the network device may set different configurations for the terminal device according to the reporting location of the terminal device, and send the configuration to the corresponding terminal device.
  • the present application further provides a communication device 1000, which may include a processing unit 1001 and a transceiver unit 1002, and the communication device 1000 may be applied to the first terminal device and the second terminal device in the above method Or network equipment, etc., not limited here.
  • a communication device 1000 which may include a processing unit 1001 and a transceiver unit 1002, and the communication device 1000 may be applied to the first terminal device and the second terminal device in the above method Or network equipment, etc., not limited here.
  • the communication apparatus 1000 may be applied to a first terminal device, and the processing unit 1001 is configured to determine first beam information that indicates the first terminal device uses data transmission on a secondary link. Beam; transceiver unit 1002, for sending the first beam information.
  • the transceiver unit 1002 when sending and receiving the first beam information, is specifically configured to send first signaling to a second terminal device, where the first signaling carries the first beam information. Or, send second signaling to the network device, where the second signaling carries the first beam information.
  • the processing unit 1001 is specifically configured to: control the transceiver unit 1002 to receive the monitoring beam information of the second terminal device; and determine the first beam information according to the monitoring beam information.
  • the transceiver unit 1002 when the transceiver unit 1002 receives the monitoring beam information of the second terminal device, it is used to: receive third signaling sent by the second terminal device, where the third signaling carries the second terminal Monitoring beam information of the device; or, receiving fourth signaling sent by the network device, where the fourth signaling carries monitoring beam information of the second terminal device.
  • the monitoring beam information of the second terminal device includes the beam scanning configuration of the second terminal device
  • the processing unit 1001 is further configured to: according to the beam scanning configuration of the second terminal device, determine the first Time, the first time is the time when the first terminal device transmits data on the secondary link.
  • the transceiver unit 1002 is further configured to: send an identifier of the second terminal device, send a first instruction, receive a second instruction sent by a network device, and send a wireless access network of the first terminal device At least one of the type or the core network type of the first terminal device.
  • the first indication is used to instruct the first terminal device to perform data transmission on the secondary link with or without beamforming technology.
  • the second indication is used to instruct the first terminal device to perform data transmission on the secondary link with or without beamforming technology.
  • the communication apparatus 1000 may be applied to a second terminal device, and the transceiver unit 1002 is configured to receive first beam information indicating that the first terminal device uses data transmission on a secondary link. Beam.
  • the processing unit 1001 is configured to determine a second beam according to the first beam information, where the second beam is a beam used by the second terminal device for data transmission on a secondary link.
  • the transceiver unit 1002 when the transceiver unit 1002 receives the first beam information, it is specifically configured to: receive the first signaling sent by the first terminal device, where the first signaling carries the first beam information, or , Receiving fifth signaling sent by a network device, where the fifth signaling carries the first beam information.
  • the transceiver unit 1002 is further configured to: send third signaling to the first terminal device, send sixth signaling to the network device, receive the identifier of the second terminal device, and receive the first indication , Receiving at least one of a radio access network type of the first terminal device or a core network type of the first terminal device.
  • the third signaling carries monitoring beam information of the second terminal device
  • the sixth signaling carries monitoring beam information of the second terminal device
  • the first indication is used To instruct the first terminal device to use or not use beamforming technology to perform data transmission on the secondary link.
  • the communication apparatus 1000 may be applied to a network device, and the transceiver unit 1002 is configured to receive first beam information and send the first beam information to a second terminal device, where the first beam information indicates the first terminal The beam used by the device for data transmission on the secondary link.
  • the processing unit 1001 is configured to control the transceiver unit 1002 to receive the first beam information and send the first beam information to the second terminal device.
  • the transceiving unit 1002 when the transceiving unit 1002 sends the first beam information to the second terminal device, it is specifically used to: send a fifth signaling to the second terminal device, where the fifth signaling carries the First beam information.
  • the transceiver unit 1002 when the transceiver unit 1002 receives the first beam information, it is specifically configured to: receive second signaling sent by the first terminal device, where the second signaling carries the first beam information.
  • the transceiver unit 1002 is further configured to: receive sixth signaling sent by the second terminal device, send fourth signaling to the first terminal device, or send a second indication to the first terminal device At least one.
  • the sixth signaling carries monitoring beam information of the second terminal device
  • the fourth signaling carries monitoring beam information of the second terminal device
  • the second indication is used To instruct the first terminal device to use or not use beamforming technology to perform data transmission on the secondary link.
  • an embodiment of the present application further provides a communication device 1100, which can be applied to the first terminal device, the second terminal device, or the network device in the above method, which is not described here. To be limited.
  • the communication device 1100 may include a processor 1110.
  • the communication device 1100 may include a memory 1120.
  • the communication device 1100 may further include a receiver 1140 and a transmitter 1150.
  • the device 1100 may further include a bus system 1130.
  • the processor 1110, the memory 1120, the receiver 1140, and the transmitter 1150 are connected through a bus system 1130, the memory 1120 is used to store instructions, and the processor 1110 is used to execute the instructions stored in the memory 1120 to control the receiver 1140 receives the signal, and controls the transmitter 1150 to send the signal to complete the steps of the first terminal device, the second terminal device, or the network device in the above method.
  • the receiver 1140 and the transmitter 1150 may be the same or different physical entities. If they are the same physical entity, they can be collectively referred to as transceivers.
  • the memory 1120 may be integrated in the processor 1110, or may be provided separately from the processor 1110.
  • the functions of the receiver 1140 and the transmitter 1150 may be implemented through a transceiver circuit or a dedicated chip for transceiver.
  • the processor 1110 may be realized by a dedicated processing chip, a processing circuit, a processor, or a general-purpose chip.
  • a general-purpose computer may be considered to implement the first terminal device, the second terminal device, or the network device provided in the embodiments of the present application.
  • the program codes that will realize the functions of the processor 1110, the receiver 1140, and the transmitter 1150 are stored in the memory, and the general processor implements the functions of the processor 1110, the receiver 1140, and the transmitter 1150 by executing the codes in the memory.
  • the communication device 1100 may be applied to a first terminal device, a processor 1110, used to determine first beam information; and a transmitter 1150, used to send first beam information.
  • the transmitter 1150 may be specifically used to send first signaling to a second terminal device, where the first signaling carries the first beam information, or , Sending second signaling to the network device, where the second signaling carries the first beam information.
  • the processor 1110 determines the first beam information, it may be specifically used to: control the receiver 1140 to receive the monitoring beam information of the second terminal device; and determine the first beam information according to the monitoring beam information .
  • the receiver 1140 when the receiver 1140 receives the monitoring beam information of the second terminal device, it may be specifically used to: receive third signaling sent by the second terminal device, where the third signaling carries the first Two monitoring beam information of the terminal device; or receiving fourth signaling sent by the network device, where the fourth signaling carries monitoring beam information of the second terminal device.
  • the monitoring beam information of the second terminal device includes the beam scanning configuration of the second terminal device
  • the processor 1110 is further configured to: according to the beam scanning configuration of the second terminal device, determine the first time , The first time is the time when the first terminal device transmits data on the secondary link.
  • the transmitter 1150 is further configured to: send an identifier of the second terminal device, or send a first indication, where the first indication is used to indicate whether the first terminal device uses beamforming or not
  • the technology performs data transmission on the secondary link, or sends at least one of the radio access network type or the core network type of the first terminal device.
  • the receiver 1140 is further configured to: receive a second indication sent by the network device, where the second indication is used to indicate whether the first terminal device uses or does not use beamforming technology to perform data transmission on the secondary link.
  • the communication apparatus 1100 may be applied to a second terminal device, a receiver 1140, which is used to receive first beam information; and a processor 1110, which is used to determine a second beam according to the first beam information.
  • the receiver 1140 when receiving the first beam information, may be used to: receive first signaling sent by the first terminal device, where the first signaling carries the first beam information, or, Receiving fifth signaling sent by a network device, where the fifth signaling carries the first beam information.
  • the transmitter 1150 may be used to send third signaling to the first terminal device, where the third signaling carries the monitoring beam information of the second terminal device; or, to the network device Sending a sixth signaling, where the sixth signaling carries the monitoring beam information of the second terminal device.
  • the receiver 1140 is further configured to: receive at least one of an identifier of the second terminal device, a first indication, and a radio access network type or a core network type of the first terminal device.
  • the first indication is used to instruct the first terminal device to perform data transmission on the secondary link with or without beamforming technology.
  • an embodiment of the present invention further provides a communication system, which includes at least one of the foregoing first terminal device, second terminal device, or network device.
  • embodiments of the present application also provide a computer storage medium that stores a software program in the storage medium, which can realize any one or more of the above when read and executed by one or more processors The method provided by the embodiment.
  • the computer storage medium may include various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.
  • an embodiment of the present application further provides a chip including a processor for implementing the functions involved in any one or more of the above embodiments, such as obtaining or processing information involved in the above method or news.
  • the chip further includes a memory, which is used for necessary program instructions and data executed by the processor.
  • the chip may be composed of a chip, or may include a chip and other discrete devices.
  • the processor may be a central processing unit (Central Processing Unit, referred to as "CPU"), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integrated Circuit (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory may include read-only memory and random access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include non-volatile random access memory.
  • the bus system may also include a power bus, a control bus, and a status signal bus.
  • a power bus may also include a power bus, a control bus, and a status signal bus.
  • various buses are marked as bus systems in the figure.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in conjunction with the embodiments of the present invention may be directly implemented and completed by a hardware processor, or may be implemented and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and 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. In order to avoid repetition, they are not described in detail here.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the relationship of the related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related object is a “or” relationship.
  • “At least one of the following” or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items.
  • At least one item (a) in a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be a single or multiple .

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

Abstract

L'invention concerne un procédé et un appareil de communication. Le procédé comprend : la détermination par un premier dispositif terminal de premières informations de faisceau, les premières informations de faisceau indiquant le faisceau utilisé par le premier dispositif terminal pour une transmission de données sur une liaison latérale ; l'envoi par le premier dispositif terminal des premières informations de faisceau. Le procédé et l'appareil de la présente invention peuvent résoudre le problème de l'utilisation d'une technologie de formation de faisceau par deux dispositifs terminaux pour une communication sur une liaison latérale.
PCT/CN2019/126029 2018-12-17 2019-12-17 Procédé et appareil de communication WO2020125635A1 (fr)

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