WO2021114043A1 - Procédé de communication de dispositif à dispositif et appareil de communication - Google Patents

Procédé de communication de dispositif à dispositif et appareil de communication Download PDF

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Publication number
WO2021114043A1
WO2021114043A1 PCT/CN2019/124093 CN2019124093W WO2021114043A1 WO 2021114043 A1 WO2021114043 A1 WO 2021114043A1 CN 2019124093 W CN2019124093 W CN 2019124093W WO 2021114043 A1 WO2021114043 A1 WO 2021114043A1
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WIPO (PCT)
Prior art keywords
terminal device
reference signal
reference signals
beams
resource
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PCT/CN2019/124093
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English (en)
Chinese (zh)
Inventor
袁璞
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华为技术有限公司
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Priority to PCT/CN2019/124093 priority Critical patent/WO2021114043A1/fr
Publication of WO2021114043A1 publication Critical patent/WO2021114043A1/fr

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    • 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 communication field, and more specifically, to a device-to-device communication method and communication device in the communication field.
  • NR new radio
  • D2D device to device
  • the present application provides a device-to-device communication method and communication device, which can perform beam pairing in D2D, thereby facilitating communication.
  • a device-to-device communication method including: a first terminal device receives at least part of a first reference signal among N first reference signals sent by a second terminal device, where N is a positive integer; The first terminal device determines the target first reference signal in the at least part of the first reference signal according to the quality of the reference signal; the first terminal device determines the first resource corresponding to the target first reference signal, the first The resource is used by the second terminal device to determine the first beam; the first terminal device sends the confirmation information of the at least part of the first reference signal to the second terminal device on the first resource.
  • the first terminal device can use the corresponding relationship between the resource and the first reference signal to determine the first resource corresponding to the target first reference signal, and send at least part of the first resource to the second terminal device on the determined first resource.
  • the confirmation information of the first reference signal in this way, the second terminal device can use the first resource to determine the first beam, so that the second terminal device can use the determined first beam to communicate with the first device.
  • the resources mentioned in this application may be time domain resources, frequency domain resources or time-frequency resources.
  • the first terminal device stores previous correspondences between multiple resources and the N first reference signals.
  • the second terminal device stores the correspondence between the N beams for transmitting the N first reference signals and the multiple resources.
  • the second terminal device may use the first beam to send data to the first terminal device.
  • the second terminal device may use the first beam to send and receive data with the first terminal device.
  • the channels of the second terminal device are reciprocal.
  • At least part of the first reference signal includes part or all of the N first reference signals.
  • the receiving, by the first terminal device, the N first reference signals sent by the second terminal device includes: the first terminal device receives the second terminal device in M beams through M beams. At least a part of the first reference signals among the N first reference signals transmitted through N beams in each transmission period in a transmission period, where the N beams correspond to the N first reference signals in a one-to-one correspondence, and the The M beams have a one-to-one correspondence with the M cycles, and M is a positive integer;
  • the method further includes: the first terminal device determining the beam receiving the target first reference signal among the M beams as the second beam.
  • the first terminal device may use the second beam to send data to the second terminal device.
  • the first terminal device may use the second beam to send and receive data with the second terminal device.
  • the channels of the first terminal device are reciprocal.
  • the first terminal device receives the second terminal device through the M beams and sends the N first reference signals through the N beams in each transmission period in the M transmission cycles, and the first terminal device can transmit the N first reference signals according to the M beams.
  • the second beam is determined among the M beams, and at least part of the received first reference signal can also be used to determine the first resource for sending the confirmation information.
  • the second terminal device can determine the first beam according to the first resource. In this way, beam pairing can be achieved.
  • the first terminal device and the second terminal device use the paired first beam and the second beam to communicate, thereby facilitating D2D communication.
  • the receiving, by the first terminal device, at least part of the first reference signal among the N first reference signals sent by the second terminal device includes: the first terminal device receiving the second terminal device At least part of the first reference signals among the N first reference signals respectively sent by the device through the N beams in a sending period;
  • the method further includes: the first terminal device sequentially receives, through M beams, a second reference signal corresponding to the first beam that is sent by the second terminal device multiple times through the first beam;
  • the first terminal device determines the second beam among the M beams according to the signal quality of the second reference signal corresponding to the first beam.
  • the first terminal device can determine the second beam among the M beams based on the second reference signal received multiple times, and can also use at least part of the received first reference signal to determine the first terminal device to send the confirmation information.
  • the second terminal device can determine the first beam according to the first resource, so that beam pairing can be realized.
  • the first terminal device and the second terminal device use the paired first beam and the second beam to communicate, thereby facilitating D2D communication.
  • the N first reference signals are side link synchronization signal blocks S-SSB, and the second reference signals are S-SSB; or, the N first reference signals are S-SSB, the second reference signal is a reference signal BTRS for beam training.
  • the first terminal device can determine the second beam, and the second The terminal device can determine the first beam. If the N first reference signals are S-SSB and the second reference signal is the reference signal BTRS for beam training, the first terminal device may determine the second beam after less than two transmission periods. The two terminal devices can determine the first beam so that the time for beam pairing can be reduced.
  • the first terminal device sending the confirmation information of the at least part of the first reference signal to the second terminal device on the first resource includes: the first terminal device passes The second beam sends the confirmation information of the at least part of the first reference signal to the second terminal device on the first resource.
  • the method further includes: the first terminal device receives, through the second beam, the configuration information sent by the second terminal device through the first beam, where the configuration information includes all The identifier assigned by the second terminal device to the first terminal device.
  • the method further includes: the first terminal device receives a temporary identifier sent by the second terminal device; the confirmation information includes the temporary identifier.
  • a device-to-device communication method including:
  • the second terminal device sends N first reference signals to the first terminal device, where N is a positive integer;
  • the second terminal device receives, on the first resource, the confirmation information of at least part of the first reference signal among the N first reference signals sent by the first terminal device; The first beam corresponding to the first resource.
  • the first terminal device can use the corresponding relationship between the resource and the first reference signal to determine the first resource corresponding to the target first reference signal, and send at least part of the first resource to the second terminal device on the determined first resource.
  • the confirmation information of the first reference signal in this way, the second terminal device can use the first resource to determine the first beam, so that the second terminal device can use the determined first beam to communicate with the first device.
  • the second terminal device sending N first reference signals to the first terminal device includes:
  • the second terminal device transmits the N first reference signals to the first terminal device through N beams in each transmission period in the M transmission periods, and the N beams are related to the N first reference signals.
  • the signals have a one-to-one correspondence, the M cycles correspond to the M beams of the first terminal device, and M is a positive integer.
  • the second terminal device sending N first reference signals to the first terminal device includes:
  • the second terminal device sends the N first reference signals to the first terminal device through N beams in one transmission period, and the N beams correspond to the N first reference signals in a one-to-one correspondence;
  • the method also includes:
  • the second terminal device sends the second reference signal corresponding to the first beam multiple times to the first terminal device through the first beam.
  • the N first reference signals are side link synchronization signal blocks S-SSB, and the second reference signals are S-SSB; or, the N first reference signals are S-SSB, the second reference signal is a reference signal BTRS for beam training.
  • the method before the second terminal device sends the second reference signal corresponding to the first beam to the first terminal device multiple times through the first beam, the method further includes:
  • the second terminal device uses a predefined second identifier to generate a second reference signal corresponding to the first beam, and the second identifier is related to an identifier for generating a first reference signal corresponding to the first beam.
  • the method further includes:
  • the second terminal device sends configuration information to the first terminal device through the first beam, where the configuration information includes an identifier assigned by the second terminal device to the first terminal device.
  • the method further includes:
  • the confirmation information includes the temporary identifier.
  • a communication device configured to execute the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the apparatus may include a module for executing the first aspect or the method in any possible implementation manner of the first aspect.
  • a communication device configured to execute the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • the device may include a module for executing the second aspect or the method in any possible implementation manner of the second aspect.
  • a communication device in a fifth aspect, includes a processor coupled with a memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions stored in the memory, so that in the first aspect The method is executed.
  • the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method in the first aspect.
  • the communication device includes one or more processors.
  • the communication device may further include a memory coupled with the processor.
  • the communication device may include one or more memories.
  • the memory can be integrated with the processor or provided separately.
  • the communication device may also include a transceiver.
  • a communication device in a sixth aspect, includes a processor, the processor is coupled with a memory, the memory is used to store a computer program or instruction, and the processor is used to execute the computer program or instruction stored in the memory, so that in the second aspect The method is executed.
  • the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method in the second aspect.
  • the communication device includes one or more processors.
  • the communication device may further include a memory coupled with the processor.
  • the communication device may include one or more memories.
  • the memory can be integrated with the processor or provided separately.
  • the communication device may also include a transceiver.
  • the present application provides a communication system, which includes the device provided in the third aspect and the device provided in the fourth aspect; or
  • the system includes the device provided in the fifth aspect and the device provided in the sixth aspect.
  • a computer-readable storage medium on which a computer program (also referred to as an instruction or code) for implementing the method in the first aspect is stored.
  • the computer when the computer program is executed by a computer, the computer can execute the method in the first aspect.
  • the computer may be a communication device.
  • a computer-readable storage medium on which a computer program (also referred to as an instruction or code) for implementing the method in the first aspect or the second aspect is stored.
  • the computer when the computer program is executed by a computer, the computer can execute the method in the second aspect.
  • the computer may be a communication device.
  • this application provides a chip including a processor.
  • the processor is used to read and execute the computer program stored in the memory to execute the method in the first aspect and any possible implementation manners thereof.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip further includes a communication interface.
  • the present application provides a chip including a processor.
  • the processor is used to read and execute the computer program stored in the memory to execute the method in the second aspect and any possible implementation manners thereof.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip further includes a communication interface.
  • the present application provides a computer program product
  • the computer program product includes a computer program (also referred to as instructions or code), when the computer program is executed by a computer, the computer realizes the method.
  • the computer may be a communication device.
  • the present application provides a computer program product
  • the computer program product includes a computer program (also referred to as instructions or code), when the computer program is executed by a computer, the computer realizes the second aspect method.
  • the computer may be a communication device.
  • Fig. 1 is an architecture diagram of a communication system provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a device-to-device communication method provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of an S-SSB provided by an embodiment of the present application.
  • Fig. 4 is a schematic diagram of another device-to-device communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of sending and receiving reference signals provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of another device-to-device communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another sending and receiving reference signal provided by an embodiment of the present application.
  • FIG. 8 is another schematic diagram of sending and receiving a first reference signal according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a scene of communication between devices.
  • the link through which the terminal device 121 sends data to the network device 110 is called uplink, and the link through which the terminal device 121 receives data from the network device 110 is called downlink. (downlink).
  • the link for transmitting data between the terminal device 121 and the terminal device 122 is called a side link.
  • Sidewalk links are generally used in scenarios where direct communication between devices such as vehicle to everything (V2X) or device to device (D2D) can be performed.
  • V2X communication can be regarded as a special case of D2D communication.
  • New radio (NR) access technology is the current mainstream wireless communication technology. It can support V2X communication with lower latency and higher reliability in response to V2X service characteristics and new service requirements.
  • V2X is the foundation and key technology for the realization of smart cars, autonomous driving, and smart transportation systems.
  • V2X may include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), and so on.
  • V2N communication is currently the most widely used form of Internet of Vehicles. Its main function is to connect vehicles to a cloud server through a mobile network and use the navigation, entertainment, and anti-theft functions provided by the cloud server.
  • V2V communication can be used for information exchange and reminding between vehicles, and the most typical application is for anti-collision safety systems between vehicles.
  • V2I communication vehicles can communicate with roads and even other infrastructure, such as traffic lights, roadblocks, etc., to obtain road management information such as traffic light signal timing.
  • V2P communication can be used to warn pedestrians or non-motorized vehicles on the road.
  • the terminal equipment in the embodiments of the present application may refer to user equipment (UE), access terminal, subscriber unit, subscriber station (subscriber station, SS), mobile station, mobile station, remote station, remote terminal, mobile equipment, User terminal, terminal, wireless communication equipment, customer premise equipment (CPE), user agent, or user device.
  • UE user equipment
  • access terminal subscriber unit
  • subscriber station subscriber station
  • SS subscriber station
  • mobile station mobile station
  • remote station remote terminal
  • mobile equipment User terminal
  • terminal wireless communication equipment
  • CPE customer premise equipment
  • user agent user agent
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (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 the future 5G network, or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., this embodiment of the present application is not limited thereto.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • Network equipment can be used to connect the terminal to a radio access network (RAN). Therefore, a network device may sometimes be referred to as an access network device or an access network node. It is understandable that in systems using different wireless access technologies, the names of devices with base station functions may be different.
  • the network equipment may be, for example, an evolved node B (eNB) in long term evolution (LTE), or it may be a next-generation base station node in the fifth generation (5G) mobile communication system. next generation node base station, gNB).
  • the network equipment can be a macro base station or a micro base station.
  • the network device can also be a roadside device with wireless access function or a certain terminal.
  • devices that can implement the functions involved on the network device side in the embodiments of the present application are collectively referred to as network devices.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.
  • a network device can send data or control signaling to one or more terminals. Multiple network devices can also send data or control signaling to one or more terminal devices at the same time.
  • a random access process can be used to achieve beam pairing, but in the communication process between the terminal device 121 and the terminal device 122, since there is no random access process, how to perform beam pairing is urgently needed. solved problem.
  • the embodiment of the beam in the NR protocol can be a spatial domain filter, or a spatial filter or a spatial parameter.
  • the beam used to transmit a signal can be called a transmission beam (Tx beam), it can be called a spatial domain transmission filter or a spatial transmission parameter; the beam used to receive a signal can be called To receive the beam (reception beam, Rx beam), it can be called a spatial domain receive filter or a spatial receive parameter (spatial RX parameter).
  • the transmitting beam may refer to the distribution of signal strength in different directions in space after a signal is transmitted through the antenna
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
  • the beam may be a wide beam, or a narrow beam, or other types of beams.
  • the beam forming technology may be beamforming technology or other technologies.
  • the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology, etc.
  • multiple beams having the same or similar communication characteristics are regarded as one beam.
  • One or more antenna ports can be included in one beam, which are used to transmit data channels, control channels, and sounding signals.
  • One or more antenna ports forming a beam can also be regarded as an antenna port set.
  • one beam corresponds to one resource, so the resource index can be used to uniquely identify the beam corresponding to the resource.
  • the resource index can be used to uniquely identify the beam corresponding to the resource.
  • the resource can be a signal resource.
  • Signals include but are not limited to sounding reference signal (SRS), demodulation reference signal (DMRS), channel state information reference signal (CSI-RS), cell-specific reference signal ( cell specific reference signal (CS-RS), UE specific reference signal (user equipment specific reference signal, US-RS), demodulation reference signal (demodulation reference signal, DMRS), and synchronization signal/physical broadcast channel block (synchronization system/ physical broadcast channel block, SS/PBCH block).
  • the SS/PBCH block may be referred to as a synchronization signal block (synchronization signal block, SSB) for short.
  • the method 200 includes:
  • the second terminal device sends N first reference signals to the first terminal device, where N is a positive integer.
  • the first terminal device tries to receive the N first reference signals sent by the second terminal device, and the first terminal device may receive at least part of the first reference signals among the N first reference signals.
  • the received first reference signal whose signal quality is greater than the signal threshold is at least part of the first reference signal.
  • At least part of the first reference signals of the N first reference signals are used by the first terminal device to determine the second beam.
  • the first terminal device determines the beam with the best reference signal quality in receiving at least part of the first reference signal as the second beam.
  • the first terminal device may use the second beam to receive the information sent by the second terminal device.
  • the second beam is a beam used by the first terminal device and the second terminal device to transmit (including receiving and sending) data.
  • the channel has reciprocity, and the first terminal device can use the determined second beam to send and receive data with the second terminal device.
  • the first reference signal may be a sidelink-SSB (sidelink-SSB, S-SSB).
  • the format of the S-SSB is shown in FIG. 3.
  • the S-SSB consists of a sidelink physical broadcast channel (side-link). link physical broadcast shared channel, PSBCH), side-link primary synchronization signal (S-PSS), side-link secondary synchronization signal (S-SSS) and interval (GAP) composition.
  • the first terminal device determines a target first reference signal in the at least part of the first reference signals according to the quality of the reference signal.
  • the reference signal quality may be reference signal receiving power (RSRP) S220, which includes: the first terminal device determines the maximum RSRP of the at least part of the first reference signals as the target first reference signal .
  • the reference signal quality may be a signal to interference plus noise ratio (SINR).
  • S220 includes: the first terminal device determines the maximum SINR in the at least part of the first reference signals as the target The first reference signal.
  • S230 The first terminal device determines a first resource corresponding to the target first reference signal.
  • the first terminal device stores the corresponding relationship between each first reference signal and the resource. After the first terminal device determines the target first reference signal, it can determine the first resource corresponding to the target first reference signal according to the corresponding relationship. .
  • the first terminal device sends at least part of the confirmation information of the first reference signal to the second terminal device on the first resource.
  • the second terminal device can receive the confirmation information on the first resource.
  • the method 200 further includes: the second terminal device sends a temporary identity (temp identity) to the first terminal device, for example, the second terminal device sends the temporary identity to the first terminal device in a broadcast or unicast manner.
  • the confirmation information that the first terminal device sends at least part of the first reference signal to the second terminal device on the first resource may include the temporary identifier received from the second terminal device.
  • the second terminal device determines the first beam corresponding to the first resource.
  • S250 includes: the second terminal device determines the target first reference signal corresponding to the first resource, and the second terminal device determines the first beam for transmitting the target first reference signal.
  • the second terminal device may send N first reference signals through N beams, one beam corresponds to one first reference signal, and there is a corresponding relationship between the first reference signal and the resource, and the second terminal device may determine the first reference signal by the first resource.
  • a terminal device receives the target first reference signal, and then determines that the beam for transmitting the target first reference signal is the first beam.
  • the first beam may be a transmission beam for the second terminal device to send data to the first terminal device.
  • the first beam may be a beam for transmitting (including sending and receiving) data between the second terminal device and the first terminal device.
  • the channel has reciprocity, and the second terminal device can use the determined first beam to send and receive data with the first terminal device.
  • the first terminal device can use at least part of the received first reference signal to determine the second beam, and can also use at least part of the received first reference signal to determine the first resource for sending the confirmation information.
  • the second terminal device can determine the first beam according to the first resource, so that beam pairing can be realized.
  • the first terminal device and the second terminal device use the paired first beam and the second beam to communicate, thereby facilitating D2D communication.
  • the method 400 includes:
  • the second terminal device sends a temporary identifier to the first terminal device.
  • the second terminal device may send the temporary identifier to the first terminal device in a broadcast or unicast manner.
  • the first terminal device receives the temporary identifier sent by the second terminal device.
  • the second terminal device transmits N first reference signals to the first terminal device through N beams (that is, beam scanning transmission) in each transmission period in the M transmission periods, the N beams and the N first reference signals
  • N beams that is, beam scanning transmission
  • M One-to-one correspondence, M is a positive integer.
  • the first terminal device receives at least a part of the first reference signals among the N first reference signals sent by the second terminal device through the N beams in each transmission cycle in the M transmission cycles through the M beams, and the first terminal equipment
  • the M beams of the device correspond to M transmission periods one-to-one.
  • the transmission method is shown in Fig. 5, the upper part is that the second terminal device uses N beams to send N first reference signals in each transmission period, and the lower part of the first terminal device uses one beam to receive the second terminal device.
  • M transmission periods There are a total of M transmission periods.
  • the second terminal device transmits N first reference signals corresponding to N beams in each transmission period of M transmission periods, and the first terminal device uses M beams to receive N beams corresponding to N beams in turn.
  • the transmission period and the reception period may be the same.
  • the method further includes: the second terminal device generates N first reference signals.
  • the second terminal device may generate N first reference signals with N predefined IDs.
  • N pre-defined multicast IDs can be used to generate N first reference signals.
  • N first reference signals may be generated by using predefined N unicast IDs.
  • S410 and S420 are not limited, and S410 may be performed before or after S420, or at the same time.
  • the first terminal device may determine, according to the quality of the reference signal, which of the M beams is used to receive the first reference signal with the best signal quality, and the first reference signal is also referred to as a target first reference signal.
  • the first terminal device determines the beam that receives the first reference signal of the target among the M beams as the second beam.
  • the first terminal device can communicate with the second terminal device using the second beam.
  • S450 There is a corresponding resource for each first reference signal, and the first terminal device determines a first resource corresponding to the target first reference signal.
  • S440 and S450 are not limited, and S440 can be performed before or after S450, or at the same time.
  • the first terminal device sends at least part of the confirmation information of the first reference signal to the second terminal device on the first resource.
  • the confirmation information includes the temporary identifier in S410.
  • the second terminal device receives the confirmation information sent by the first terminal device on the first resource.
  • the first terminal device may use the second beam to send the confirmation information to the second terminal device on the first resource.
  • S470 The second terminal device determines the first beam according to the first resource.
  • S470 includes: the second terminal device determines the target first reference signal corresponding to the first resource, and the second terminal device determines the first beam for transmitting the target first reference signal.
  • the second terminal device can send N first reference signals through N beams, one beam corresponds to one first reference signal, and there is a corresponding relationship between the first reference signal and the resource, and the second terminal device can determine the first terminal device by the first resource After receiving the first reference signal of the target, it is determined that the beam for transmitting the first reference signal of the target is the first beam.
  • the second terminal device can use the first beam to communicate with the first terminal device.
  • the second terminal device sends configuration information to the first terminal device through the determined first beam, where the configuration information includes an identity (ID) allocated by the second terminal device to the first terminal device, and the identity It can also be referred to as a fixed identification, and the identification can be the ID of the first terminal device or the link ID.
  • ID an identity allocated by the second terminal device to the first terminal device
  • the identity It can also be referred to as a fixed identification, and the identification can be the ID of the first terminal device or the link ID.
  • the first terminal device may use the second beam to receive the configuration information sent by the second terminal device through the first beam.
  • the second terminal device may send the first reference signal corresponding to the multiple beams to the first terminal device through multiple beams in multiple transmission periods, and the first terminal device determines the first reference signal with the best received signal quality.
  • the reference signal is the target first reference signal
  • the beam receiving the target first reference signal is determined as the second beam of the first terminal device
  • the corresponding relationship between the first reference signal and the resource is determined The first resource, so that confirmation information is sent on the first resource.
  • the second terminal device After receiving the confirmation information on the first resource, the second terminal device determines the target first reference signal received by the first terminal device according to the correspondence between the resource and the reference signal , Thereby determining the beam that sends the target first reference signal as the first beam, so that the first terminal device can use the second beam to communicate with the first beam of the second terminal device, so that beam pairing can be realized, which is beneficial to D2D communication .
  • the method 600 includes:
  • the second terminal device sends a temporary identifier to the first terminal device.
  • the second terminal device may send the temporary identifier to the first terminal device in a broadcast or unicast manner.
  • the first terminal device receives the temporary identifier sent by the second terminal device.
  • the second terminal device sends N first reference signals to the first terminal device through N beams in one sending period, and the N beams correspond to the N first reference signals in a one-to-one correspondence.
  • the first terminal device omnidirectionally receives at least a part of the first reference signals among the N first reference signals transmitted by the second terminal device through the N beams in one transmission period.
  • the transmission period and the reception period may be the same.
  • the method further includes: the second terminal device generates N first reference signals.
  • the second terminal device may generate N first reference signals with N predefined IDs.
  • N pre-defined multicast IDs can be used to generate N first reference signals.
  • N first reference signals may be generated by using predefined N unicast IDs.
  • S610 and S620 are not limited, and S610 can be performed before or after S620, or at the same time.
  • the first terminal device may determine, according to the quality of the reference signal, a first reference signal with the best signal quality among at least part of the received first reference signals as the target first reference signal.
  • S640 There is a corresponding resource for each first reference signal, and the first terminal device determines a first resource corresponding to the target first reference signal.
  • the first terminal device sends at least part of the confirmation information of the first reference signal to the second terminal device on the first resource.
  • the confirmation information includes the temporary identifier in S610.
  • the second terminal device receives the confirmation information sent by the first terminal device on the first resource.
  • the first terminal device omnidirectionally sends at least part of the confirmation information of the first reference signal to the second terminal device on the first resource.
  • S660 The second terminal device determines the first beam according to the first resource.
  • S660 includes: the second terminal device determines the target first reference signal corresponding to the first resource, and the second terminal device determines the first beam for transmitting the target first reference signal.
  • the second terminal device can send N first reference signals through N beams, one beam corresponds to one first reference signal, and there is a corresponding relationship between the first reference signal and the resource, and the second terminal device can determine the first terminal device by the first resource After receiving the first reference signal of the target, it is determined that the beam for transmitting the first reference signal of the target is the first beam.
  • the second terminal device can use the first beam to communicate with the first terminal device.
  • the second terminal device sends configuration information to the first terminal device through the determined first beam, where the configuration information includes an identifier assigned by the second terminal device to the first terminal device.
  • the identifier may also be referred to as a fixed Logo.
  • the first terminal device may receive the configuration information sent by the second terminal device through the first beam through beam scanning.
  • the second terminal device sends the second reference signal corresponding to the first beam multiple times through the first beam.
  • the first terminal device receives the second reference signal sent by the second terminal device through the first beam multiple times through the M beams at a time.
  • the method 600 further includes: generating a second reference signal corresponding to the first beam with a predefined second identifier, and the second identifier is a first reference signal corresponding to the generating of the first beam.
  • the identification of the signal is related. That is to say, the reference signals corresponding to the same beam at different stages can be the same reference signal or different reference signals. If the corresponding reference signals at different stages are different, the identifiers of the different reference signals are generated and associated. This is convenient for the first The terminal device parses the reference signal.
  • the first terminal device determines a second beam among the M beams according to the signal quality of the second reference signal.
  • the first terminal device uses the M beams to receive the second reference signal M times respectively, and selects the primary beam with the best received signal quality to determine it as the second beam.
  • the first terminal device can communicate with the second terminal device using the second beam.
  • the order of S670 and S680-S690 is not limited. If S670 is before S680-S690, in this case, the first terminal device beam scans to receive configuration information; if S670 is after S680-S690, in this case, the first terminal device can use the second beam determined in S690 Receive the configuration information in S670.
  • both the first reference signal and the second reference signal may be S-SSB, as shown in FIG. 7.
  • the sending process of S620 can be the first stage.
  • the upper part is the second terminal device using N beams to send N first reference signals in one sending cycle, and the lower part of the first terminal device receives the second terminal omnidirectionally in one receiving cycle.
  • the sending process of S680 may be the second stage. In this way, after 2 transmission periods, the first terminal device can determine the second beam, and the second terminal device can determine the first beam. Compared with the method 400, the beam pairing time can be saved. In the method 400, M transmission periods are required.
  • the method 600 can greatly save the beam pairing time.
  • the first reference signal may be an S-SSB
  • the second reference signal may be a reference signal for beam training (beam training RS, BTRS), where BTRS is a reference signal dedicated to beam training, and the generation of BTRS and
  • the mapping method is similar to other reference signals, for example, it can be similar to CSI-RS.
  • BTRS beam training RS
  • the transmission duration of BTRS is one or several time slots
  • the transmission of S-SSB M times is usually several tens of milliseconds. Therefore, if the second reference signal is a BTRS, the beam pairing time can be shortened, thereby reducing the time delay.
  • the second reference signal can also be other reference signals different from S-SSB and BTRS.
  • the transmission period of the second reference signal is less than the transmission period of the first reference signal, the beam pairing can be shortened. Time, the embodiment of this application does not limit this.
  • FIG. 9 shows a schematic block diagram of a communication device 900 provided by an embodiment of the present application.
  • the device 900 may correspond to the first terminal device described in the above method, or may correspond to the chip or component of the first terminal device, and the device Each module or unit in 900 may be used to execute each action or processing procedure performed by the first terminal device in the foregoing method.
  • the communication device 900 may include a transceiver unit 910 and a processing unit 920.
  • the transceiving unit 910 is configured to receive at least part of the first reference signal among the N first reference signals sent by the second terminal device, where N is a positive integer;
  • the processing unit 920 is configured to determine a target first reference signal in the at least part of the first reference signal according to the quality of the reference signal;
  • the processing unit 920 is further configured to determine a first resource corresponding to the target first reference signal, where the first resource is used by the second terminal device to determine a first beam;
  • the transceiving unit 910 is further configured to send confirmation information of the at least part of the first reference signal to the second terminal device on the first resource.
  • the transceiving unit 910 is specifically configured to: receive, through M beams, the N first reference signals sent by the second terminal device through N beams in each of the M transmission periods. At least part of the first reference signal in the signal, the N beams correspond to the N first reference signals one-to-one, the M beams correspond to the M cycles one-to-one, and M is a positive integer;
  • the processing unit 920 is further configured to determine the beam receiving the target first reference signal among the M beams as the second beam.
  • the transceiving unit 910 is specifically configured to: receive at least part of the first reference signals among the N first reference signals respectively sent by the second terminal device through N beams in a transmission period ;
  • the transceiving unit 910 is further configured to sequentially receive the second reference signal corresponding to the first beam sent by the second terminal device through the first beam multiple times through M beams;
  • the processing unit 920 is further configured to determine a second beam among the M beams according to the signal quality of the second reference signal corresponding to the first beam.
  • the N first reference signals are side uplink synchronization signal blocks S-SSB, and the second reference signals are S-SSB; or, the N first reference signals are S-SSB.
  • the second reference signal is a reference signal BTRS for beam training.
  • the transceiving unit 910 is specifically configured to: send the confirmation information of the at least part of the first reference signal to the second terminal device on the first resource through the second beam.
  • the transceiver unit 910 is further configured to: receive, through the second beam, the configuration information sent by the second terminal device through the first beam, where the configuration information includes the second terminal The identifier assigned by the device to the device.
  • the transceiving unit 910 is further configured to: receive a temporary identifier sent by the second terminal device; the confirmation information includes the temporary identifier.
  • FIG. 10 shows a schematic block diagram of a communication device 1000 provided by an embodiment of the present application.
  • the device 1000 may correspond to the second terminal device described in the above method, or may correspond to the chip or component of the second terminal device, and the device 1000 Each module or unit in 1000 may be used to execute each action or processing procedure performed by the second terminal device in the foregoing method.
  • the communication device 1000 may include a transceiver unit 1010 and a processing unit 1020.
  • the transceiver unit 1010 is configured to send N first reference signals to the first terminal device, where N is a positive integer;
  • a processing unit 1020 configured to receive, on a first resource, confirmation information of at least part of the first reference signal among the N first reference signals sent by the first terminal device;
  • the processing unit 1020 is further configured to determine a first beam corresponding to the first resource.
  • the transceiving unit 1010 is specifically configured to: transmit the N first reference signals to the first terminal device through N beams in each transmission period in M transmission periods, and the N One beam corresponds to the N first reference signals, the M period corresponds to the M beams of the first terminal device, and M is a positive integer.
  • the transceiving unit 1010 is specifically configured to: send the N first reference signals to the first terminal device through N beams in a transmission period, and the N beams are connected to the The N first reference signals have a one-to-one correspondence; the transceiving unit 1010 is further configured to: send a second reference signal corresponding to the first beam to the first terminal device through the first beam multiple times.
  • the N first reference signals are side uplink synchronization signal blocks S-SSB, and the second reference signals are S-SSB; or, the N first reference signals are S-SSB.
  • the second reference signal is a reference signal BTRS for beam training.
  • the processing unit 1020 is further configured to: before the second reference signal corresponding to the first beam is sent to the first terminal device multiple times through the first beam, use a pre- The defined second identifier generates a second reference signal corresponding to the first beam, and the second identifier is related to an identifier for generating a first reference signal corresponding to the first beam.
  • the transceiving unit 1010 is further configured to send configuration information to the first terminal device through the first beam, and the configuration information includes the information allocated by the apparatus to the first terminal device. logo.
  • the transceiver unit 1010 is further configured to:
  • the confirmation information includes the temporary identifier.
  • the apparatus 900 of each of the foregoing solutions has the function of implementing the corresponding steps performed by the first terminal device in the foregoing method
  • the apparatus 1000 of each of the foregoing solutions has the function of implementing corresponding steps performed by the second terminal device of the foregoing method
  • the functions can be implemented by hardware, It can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the sending unit can be replaced by a transmitter, the receiving unit can be replaced by a receiver, and other units, such as a determining unit, can be replaced by a processor, and each method is executed separately. Transceiving operations and related processing operations in the embodiment.
  • the processor can be used to perform, for example, but not limited to, baseband related processing
  • the transceiver can be used to perform, for example, but not limited to, radio frequency transceiving.
  • the above-mentioned devices may be respectively arranged on independent chips, or at least partly or fully arranged on the same chip.
  • the processor can be further divided into an analog baseband processor and a digital baseband processor.
  • the analog baseband processor and the transceiver can be integrated on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip.
  • a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) Integrated on the same chip.
  • application processors such as but not limited to graphics processors, multimedia processors, etc.
  • Such a chip may be called a system on chip (SOC).
  • SOC system on chip
  • an embodiment of the present application provides a schematic block diagram of a communication device 1100.
  • the communication device 1100 includes a processor 1110, a transceiver 1120, and a memory 1130.
  • the processor 1110, the transceiver 1120, and the memory 1130 communicate with each other through an internal connection path.
  • the memory 1130 is used to store instructions, and the processor 1110 is used to execute instructions stored in the memory 1130 to control the transceiver 1120 to send signals and / Or receive the signal.
  • the transceiver 1120 is configured to receive at least a part of the first reference signal among the N first reference signals sent by the second terminal device, and N is a positive integer
  • the processor 1110 is configured to determine a target first reference signal in the at least part of the first reference signal according to the quality of the reference signal; the processor 1110 is also configured to determine a first resource corresponding to the target first reference signal, The first resource is used for the second terminal device to determine the first beam; the transceiver 1120 is also used for sending confirmation information of the at least part of the first reference signal to the second terminal device on the first resource .
  • the transceiver 1120 is configured to send N first reference signals to the first terminal device, and N is a positive integer; the processor 1110 is configured to The confirmation information of at least part of the first reference signal among the N first reference signals sent by the first terminal device is received on the resource; the processor 1110 is further configured to determine the first reference signal corresponding to the first resource. Beam.
  • apparatus 900 in FIG. 9 and the apparatus 1000 in FIG. 10 in the embodiment of the present application may be implemented by the apparatus 1100 in FIG. 11, and may be used to execute the first terminal device and the second terminal device in the foregoing method embodiment. Corresponding steps and/or processes.
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the method in the above embodiment .
  • the various embodiments in this application can also be combined with each other.
  • the present application also provides a computer-readable medium, the computer-readable interpretation stores a program code, and when the program code runs on a computer, the computer executes the method in the above-mentioned embodiment .
  • the foregoing method embodiments in the embodiments of the present application may be applied to a processor or implemented by a processor.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned 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.
  • the methods, steps, and logical 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 embodiments 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 (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 random access memory (RAM), which is used as an external cache.
  • RAM static RAM
  • dynamic RAM dynamic RAM
  • 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 direct rambus RAM, DR RAM
  • direct memory bus random memory Take memory (direct rambus RAM, DR RAM).
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the computer program product may include one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic disk), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, 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 may 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 the present 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 methods described in the various embodiments 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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Abstract

L'invention concerne un procédé de communication de dispositif à dispositif. Un premier dispositif terminal peut utiliser une corrélation entre des ressources et un premier signal de référence pour déterminer une première ressource correspondant à un premier signal de référence cible, et envoyer, sur la première ressource déterminée, des informations d'accusé de réception d'au moins certains premiers signaux de référence à un second dispositif terminal. De cette manière, le second dispositif terminal peut utiliser la première ressource pour déterminer un premier faisceau, de sorte que le second dispositif terminal puisse communiquer avec le premier dispositif au moyen du premier faisceau déterminé. À titre d'exemple, la présente invention peut être appliquée à l'Internet des véhicules, tels que V2X, LTE-V, V2V, etc.
PCT/CN2019/124093 2019-12-09 2019-12-09 Procédé de communication de dispositif à dispositif et appareil de communication WO2021114043A1 (fr)

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