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WO2019206111A1 - Procédé et appareil de communication sans fil - Google Patents

Procédé et appareil de communication sans fil Download PDF

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Publication number
WO2019206111A1
WO2019206111A1 PCT/CN2019/083802 CN2019083802W WO2019206111A1 WO 2019206111 A1 WO2019206111 A1 WO 2019206111A1 CN 2019083802 W CN2019083802 W CN 2019083802W WO 2019206111 A1 WO2019206111 A1 WO 2019206111A1
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WO
WIPO (PCT)
Prior art keywords
beams
information
terminal device
requirement
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/083802
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English (en)
Chinese (zh)
Inventor
罗俊
向铮铮
苏宏家
卢磊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2019206111A1 publication Critical patent/WO2019206111A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and apparatus for wireless communication.
  • the 60 GHz band in the high frequency may be assigned to the VX service.
  • the transmission loss of the signal is large. Therefore, in high frequency communication, a directional beam is usually used to transmit signals.
  • the application provides a wireless communication method and a communication device for improving the robustness of wireless communication.
  • a first aspect of the present application provides a communication method, the method comprising:
  • the first information is used to indicate that t beams of the service beam set of the first terminal device that do not meet the first requirement, and that the non-serving beam set of the first terminal device meets the first Two required s beams, wherein the beam satisfying the second requirement satisfies the first requirement, the number of beams in the service beam set is greater than t, and t is a positive integer;
  • the q beams of the s beams are used as service beams of the first terminal device and the t beams are used as non-serving beams of the first terminal device.
  • the communication device receiving the first information updates the beam in the service beam set according to the first information, link failure can be avoided, and the robustness of the wireless communication is improved.
  • the q beams of the s beams are used as service beams of the first terminal device, and the t beams are used as non-serving beams of the first terminal device, including:
  • the q beams of the s beams are used as service beams of the first terminal device, and the t beams are used as non-serving beams of the first terminal device, including:
  • a reference signal for a non-serving beam in the set of non-serving beams is transmitted.
  • the reference signal of the non-serving beam in the non-serving beam set is used to determine whether the second requirement is met.
  • the method further includes:
  • the service beam of the first terminal device is updated or used to indicate that the first information is acknowledged.
  • the first terminal device can receive the data sent by the transmitting end in the updated beam direction in time.
  • the receiving the first information comprises receiving the first information from a second terminal device.
  • the receiving the first information comprises: receiving the first information from the first terminal device.
  • the first information is further used to indicate that t 2 beams in the service beam set of the second terminal device that do not meet the first requirement, and in the non-serving beam set indicating the second terminal device s 2 beams satisfying the second requirement. In doing so, the signaling overhead can be reduced due to the detection of the beam of multiple terminals transmitted by one device.
  • a second aspect of the present application provides a communication method, the method comprising:
  • the method further includes:
  • Measure a reference signal of the service beam in the service beam set and determine, according to a measurement result of the reference signal of the service beam in the service beam set, whether the reference signal of the service beam in the service beam set meets the first requirement;
  • Measure a reference signal of the non-serving beam in the non-serving beam set and determine, according to a measurement result of the reference signal of the non-serving beam in the non-serving beam set, whether the reference signal of the non-serving beam in the non-serving beam set satisfies State the second requirement.
  • the method further includes:
  • the second information is used to indicate that the service beam of the first terminal device has been updated, or the second information is used to indicate that the first information is acknowledged.
  • the first information is further used to indicate that t 2 beams in the service beam set of the second terminal device that do not meet the first requirement, and in the non-serving beam set indicating the second terminal device s 2 beams satisfying the second requirement.
  • the first information is sent if condition 1 is satisfied:
  • the measurement result of the reference signal of the t beams in the service beam set of the first terminal device is less than or equal to the first threshold, and the measurement result of the at least one beam in the non-serving beam set of the first terminal device is greater than the Second threshold.
  • a third aspect of the present application provides a communication method, the method comprising:
  • the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the terminal device group, and indicate that the non-serving beam set of the terminal device group meets the second requirement s beams, wherein the beam satisfying the second requirement satisfies the first requirement, the number of beams in the service beam set is greater than t, and t is a positive integer;
  • the q beams of the s beams are used as service beams of the terminal device group and the t beams are used as non-serving beams.
  • a beam in the set of beams is used to transmit multicast data to the group of terminal devices.
  • the method further includes:
  • a fourth aspect of the present application provides a communication method, the method comprising:
  • first information is used to indicate t beams that do not meet the first requirement in the service beam set of the terminal device group, and indicate that the non-serving beam set of the terminal device group meets the second requirement s beams, wherein the beam satisfying the second requirement satisfies the first requirement, the number of beams in the service beam set is greater than t, and t is a positive integer;
  • the method further includes:
  • the second information is used to indicate that the service beam of the terminal device group has been updated or used to indicate that the first information is acknowledged.
  • the method includes:
  • the first terminal device receives the third information from the third information used for indicating the terminal device serving beam set does not satisfy the requirements t 1 of the first beams, and a beam indicative of the non-serving terminal group satisfying s. 1 of the beams of the second requirement, the beams of t t. 1 belonging to the beams, the beams belonging to the s. 1 s beams.
  • a fifth aspect of the present application provides a communication method, the method comprising:
  • the q beams satisfying the second requirement in the non-serving beam set of the first terminal device are used as the service beam of the first terminal device, wherein the beam satisfying the second requirement satisfies the first requirement.
  • the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device.
  • the first information is further used to indicate the first Among the non-serving beam sets of a terminal device, s beams satisfying the second requirement.
  • q of the s beams are used as service beams of the first terminal device and the t beams are used as non-serving beams of the first terminal device.
  • a sixth aspect of the present application provides a communication method, the method comprising:
  • the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device.
  • the first information is further used to indicate the first Among the non-serving beam sets of a terminal device, s beams satisfying the second requirement. A beam that satisfies the second requirement satisfies the first requirement.
  • the beam is characterized by an antenna port.
  • the first requirement is that the measurement result of the reference signal of the beam is greater than the first threshold.
  • the measurement results include:
  • Reference signal received power RSRP Reference signal received quality RSRQ, received signal strength indicator RSSI, or signal to interference plus noise ratio SINR.
  • an embodiment of the present application provides a communication apparatus.
  • the communication device can be used to implement the method of any of the above first to fourth aspects.
  • the communication device can be a terminal, a base station, or a baseband chip, or a data signal processing chip, or a general purpose chip.
  • the communication device includes a processor.
  • the processor is for performing the functions of the various parts of any of the first to fourth aspects.
  • the above communication device may include a transceiver.
  • the embodiment of the present application further provides a computer program product, where the program product includes a program for implementing the methods of the first aspect to the fourth aspect.
  • the embodiment of the present application further provides a computer readable storage medium, where the medium stores the program of the sixth aspect.
  • the present application provides a communication system comprising the terminal device and the access network device according to the above aspect, the terminal device and the access network device communicating with each other to perform the communication method described in the above aspect.
  • the receiving end of the data can improve the robustness of the data receiving by quickly updating the beam of the transmitting data by feeding back the beam that does not meet the first requirement and the beam that meets the second requirement.
  • the technical solution of the present application is not limited to the V2X scenario.
  • the technical solution of the present application can also be applied to a wireless communication scenario such as a machine type communication (MTC) scenario, a communication between a base station and a terminal device in a cell.
  • MTC machine type communication
  • FIG. 1 is a schematic diagram of a wireless communication system provided by the present application.
  • FIG. 2 is a schematic diagram of V2V communication through a beam provided by the present application.
  • FIG. 3 is a schematic diagram of a reference signal transmitted by a beam provided by the present application.
  • FIG. 4 is a schematic diagram of a wireless communication method provided by the present application.
  • FIG. 5 is another schematic diagram of a method for wireless communication provided by the present application.
  • FIG. 6 is still another schematic diagram of a wireless communication method provided by the present application.
  • FIG. 7 is still another schematic diagram of a wireless communication method provided by the present application.
  • FIG. 8a is still another schematic diagram of a wireless communication method provided by the present application.
  • FIG. 8b is still another schematic diagram of a wireless communication method provided by the present application.
  • FIG. 9a is still another schematic diagram of a wireless communication method provided by the present application.
  • FIG. 9b is still another schematic diagram of a wireless communication method provided by the present application.
  • FIG. 10 is a schematic diagram of a possible structure of an access network device provided by the present application.
  • FIG. 11 is a schematic structural diagram of a terminal device provided by the present application.
  • FIG. 12 is a schematic block diagram of a communication device in accordance with an embodiment of the present application.
  • Beam When the transmitting device transmits data, it transmits the data by weighting the antenna at the transmitting end.
  • the weighting can be weighted in the analog domain or weighted in the digital domain.
  • the receiving device measures the received signal strength of the data in different directions. Connecting the signal strengths in different directions together forms a beam that transmits the data. For example, beam 1 in Figure 2, beam 2.
  • the beam is used to describe the signal strength of the transmitted data in different directions.
  • the reference signal is a signal known to both the transmitting end and the receiving end.
  • the reference signal can be used for channel estimation, channel detection, beam management, demodulation of data, and the like.
  • the reference signal can also be a pilot signal.
  • the reference signal is usually mapped to the antenna port of the sender for transmission.
  • a reference signal can correspond to one or more antenna ports. Taking FIG. 3 as an example, the reference signal sequence X is transmitted through the antenna port 1.
  • the time-frequency resource corresponding to the antenna port 1 is the time-frequency resource of the reference signal mapping.
  • Antenna port 1 is also known to terminal device 10b.
  • the terminal device 10b can obtain the time-frequency resources mapped by the reference signal sequence X and the reference signal sequence X through the association relationship between the antenna port 1 and the time-frequency resources mapped by the reference signal sequence X and the reference signal sequence X.
  • One antenna port can correspond to one physical antenna; it can also correspond to multiple physical antennas.
  • the data may be service data, or may be information such as signaling, messages, and the like that the system needs to transmit, for example, uplink and downlink data, uplink and downlink control messages, and the like.
  • the data does not include the reference signal.
  • FIG. 3 shows a schematic diagram of the transmitting end being the access network device 20, the receiving end being the terminal device 10b, and the accessing network device 20 transmitting the reference signal to the terminal device 10b.
  • L is the number of symbols included in the reference signal sequence X
  • x i is a symbol of the reference sequence X, 1 ⁇ i ⁇ L.
  • the reference signal sequence X is known to the terminal device 10b.
  • the access network device 20 maps the reference signal sequence X to the time-frequency resource and transmits it through the transmitting antenna.
  • the time-frequency resource mapped by the reference signal sequence X is also known to the terminal device 10b.
  • the access network device 20 weights the symbol x i on each transmitting antenna and transmits it. Since the access network device 20 weights the symbol x i on each of the transmitting antennas, the beam 3 is formed in the sptial domain.
  • the access network device 20 configures the terminal device 10b with an antenna port (reference signal mapped antenna port) that receives the reference signal sequence X, which may be one or more antenna ports .
  • the antenna port is associated (or bound) with a reference signal sequence X. That is to say, the terminal device 10b determines the antenna port, and determines the reference signal sequence X and its corresponding time-frequency resource. Taking FIG. 3 as an example, the reference signal sequence X is mapped to antenna port 1 for transmission.
  • the time-frequency resource corresponding to the antenna port 1 is the time-frequency resource of the reference signal mapping.
  • Antenna port 1 is also known to terminal device 10b.
  • the terminal device 10b can obtain the time-frequency resources mapped by the reference signal sequence X and the reference signal sequence X through the association relationship between the antenna port 1 and the time-frequency resources mapped by the reference signal sequence X and the reference signal sequence X.
  • One antenna port can correspond to one antenna; it can also correspond to multiple antennas.
  • the terminal device 10b receives the signal transmitted by the access network device 20, denoted as Y. Y is obtained after the reference signal sequence X has passed through the channel and superimposed with interference and noise. The terminal device 10b also generates a reference signal sequence X, from which the channel, channel quality, etc. between the access network device 20 and the terminal device 10b can be obtained.
  • the terminal device 10b Although the terminal device 10b does not know which beam the access network device 20 uses to transmit data, the terminal device 10b measures the reference signal corresponding to the antenna port, and the measurement result of the antenna port can be obtained. This measurement can be used to indicate channel quality. The terminal device 10b feeds back the measurement result to the access network device 20, and the access network device 20 can know the channel quality of the beam associated with the antenna port. The access network device 20 can decide whether to transmit data for another beam when the data is transmitted next time.
  • Service beam A beam used by a transmitting end to transmit data to a terminal device (or a terminal group device) for a terminal device (or a terminal group device).
  • Non-serving beam For a terminal device or a terminal group device, the transmitting end does not use a non-serving beam to transmit data. For example, an access network device does not use a non-serving beam to transmit data to a terminal device. However, the non-serving beam may become a service beam if it meets the requirements. Service beams and non-serving beams can be used for channel measurements.
  • the beam in the service beam set of the terminal device is the service beam.
  • the beam in the service beam set of the terminal device includes multiple service beams.
  • Non-serving beam set For a terminal device (or terminal group device), the beam in the non-serving beam set of the terminal device (or terminal group device) is a non-serving beam.
  • the beam in the non-serving beam set of the terminal device includes multiple service beams.
  • the beam can be characterized by one or more antenna ports. In this application, the beam can also be replaced with one or more antenna ports.
  • Beam reference signal A reference signal transmitted through the beam.
  • the access network device transmits a reference signal of a certain beam to the terminal device. After receiving the reference signal, the terminal device measures the reference signal to obtain a measurement result. Then, the terminal device feeds back indication information to the access network device to indicate whether the measurement result satisfies the requirement.
  • the reference signal transmitted through the serving beam is the reference signal of the serving beam.
  • the reference signal transmitted through the non-serving beam is the reference signal of the non-serving beam.
  • the identifier of the beam used to indicate the identity of the beam.
  • the identifier of the beam may also be an antenna port identifier, a time-frequency resource identifier or a reference signal identifier, because the beam and the corresponding time-frequency resource of the beam and the reference signal of the beam correspond to each other.
  • the reference signal of the service beam and the reference signal of the non-serving beam may be the following reference signals: a synchronization signal block SSB (synchronization signal block), a channel state information reference signal (channel state information reference) Signal, CSI-RS).
  • SSB synchronization signal block
  • channel state information reference signal channel state information reference Signal
  • the reference signal of the service beam and the reference signal of the non-serving beam may be the following reference signals: a side line (SL) synchronization signal, a sounding reference signal (SRS).
  • the SL synchronization signal may be a sidelink primary synchronization signal (SLPSS), a sidelink secondary synchronization signal (SLSSS), a sideline physical broadcast channel demodulation reference signal (sidelink physical broadcast channel demodulation reference signal). , SL-PBCH-DMRS).
  • non-serving beam of "in a non-serving beam” can be understood as a non-serving beam set.
  • a “service beam” in “in the service beam” can be understood as a set of service beams.
  • the information in this application can be carried in one message or can be carried in multiple messages.
  • the message may be physical layer signaling, or a high-level message, and is not limited herein. Multiple fields in multiple messages can be used to represent this information.
  • the first information includes content A and content B, and content A and B may be carried in a radio resource control (RRC) message.
  • the content A may be carried in a radio resource control (RRC) message, and the content B may also be carried in the physical downlink control signaling.
  • the information such as the second information and the third information is similar to the first information, and may be carried in one message or in multiple messages. Not to repeat.
  • A includes B.
  • a common understanding is that A includes B and A can also include other content.
  • An optional understanding is that A is B.
  • FIG. 1 is a schematic diagram of a possible network architecture of the present application.
  • the network includes at least terminal devices 10a and 10b.
  • the terminal devices 10a and 10b communicate with the access network device 20 via a wireless interface.
  • the channel through which the access network device transmits data to the terminal device is a downlink channel.
  • the channel through which the terminal device transmits data to the access network device is an uplink channel.
  • the terminal device 10a and the terminal device 10b can also communicate via a wireless link.
  • the terminal devices 10a and 10b may also be located in the vehicle to form a V2V communication.
  • the terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld or on-board; it can also be deployed on the water surface (such as a ship, etc.); it can also be deployed in the air (for example, an aircraft, Balloons and satellites, etc.).
  • the terminal may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, A wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • An access network device is a device that connects a terminal device to a wireless network, including but not limited to: a gNB in 5G, an evolved node B (eNB), and a radio network controller (radio network controller, RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved node B, or home node B, HNB) Baseband unit (BBU), base station (g nodeB, gNB), transmission and receiving point (TRP), transmitting point (TP), mobile switching center, etc.
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • BTS base transceiver station
  • HNB home base station
  • BBU Baseband unit
  • base station g nodeB, gNB
  • TRP transmission and receiving point
  • TP transmitting point
  • TP mobile switching center
  • Wifi connection can also be included.
  • AP Access point
  • the access network device 20 transmits data to the terminal devices 10a, 10b via beam 1 and beam 2, respectively.
  • the terminal device 10b transmits data to the terminal device 10a through the beam 3.
  • a narrow beamwidth requires that the beam main lobe of the transmitting device transmit the signal as far as possible to the receiving device. Otherwise, if the side lobes of the beam point to the receiving device, it will cause beam failure. Beam failure is the requirement that the beam cannot meet the data transmission requirements. The beam failure may also be that the reference signal measurement corresponding to the beam is below a certain threshold.
  • the data transmission method in the wireless communication aims to solve the above technical problem.
  • the first communication device may be a chip in the access network device or the access network device, or may be a chip in the terminal device or the terminal device.
  • the first communication device is an access network device
  • the second communication device is a first terminal device as an example.
  • Step 401 The access network device sends a reference signal of the service beam to the first terminal device, and a reference signal of the non-serving beam. And the access network device sends data to the first terminal device through the service beam.
  • the four service beams are denoted as beams 1, 2, 3, and 4, respectively.
  • the four service beams are the beams in the service beam set of the first terminal.
  • the four service beams are respectively characterized by four antenna ports 1, 2, 3, and 4;
  • the two non-serving beams are beams in the non-serving beam set of the first terminal, and are respectively recorded as beams 5 and 6, and Characterized by antenna ports 5, 6, respectively.
  • Step 402 The first terminal device separately measures the reference signal of the service beam and the reference signal of the non-serving beam.
  • the first terminal device receives the reference signal of the service beam of the first terminal device, for example, the reference signal of the service beam is a reference signal corresponding to the beams 1, 2, 3, and 4.
  • the first terminal device measures a reference signal of the service beam of the first terminal device, and determines whether the first requirement is met according to the measurement result of the reference signal of the service beam of the first terminal device.
  • the first terminal device receives the reference signal of the non-serving beam of the first terminal device, for example, the reference signal of the non-serving beam is the reference signal corresponding to the beam 5, 6.
  • the first terminal device determines, according to the measurement result of the reference signal of the non-serving beam of the first terminal device, whether the second requirement is met.
  • the first terminal device receives the reference signal of the service beam, and before the reference signal of the non-serving beam, the first terminal device receives the configuration information of the reference signal of the service beam and the reference signal configuration information of the non-serving beam.
  • the terminal device determines the resource of the reference signal of the service beam by using the configuration information of the reference signal of the service beam.
  • the terminal device then performs measurements based on the resources of the reference signal of the serving beam.
  • the configuration information of the reference signal of the service beam indicates the time-frequency resource of the reference signal of the service beam, and the terminal device performs measurement on the time-frequency resource.
  • the configuration information of the reference signal of the non-serving beam is similar to the configuration information of the reference signal of the serving beam, and is not described herein.
  • the first terminal device measures the reference signal corresponding to the antenna port, and obtains the measurement result of the reference signal of the serving beam and the reference signal of the non-serving beam. For example, the first terminal device obtains reference signal measurement results of the beams 1, 2, 3, and 4 by measuring reference signals corresponding to the antenna ports 1, 2, 3, and 4 respectively; the first terminal device measures the antenna ports 5 and 6 respectively. Corresponding reference signals obtain the measurement results of the reference signals of the beams 5, 6.
  • the measurement result of the reference signal of the beam includes: reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal and Signal to Interference plus Noise Ratio (SINR).
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • SINR Signal to Interference plus Noise Ratio
  • the measurement result of the reference signal of the beam is one of RSRP, RSRQ, RSSI, and SINR.
  • the first terminal device determines, according to the foregoing measurement result, a non-serving beam that does not satisfy the first required service beam and satisfies the second requirement.
  • a beam that satisfies the second requirement satisfies the first requirement.
  • the first requirement is that the measurement result of the reference signal of the beam is greater than the first threshold.
  • the first requirement may also be that the measurement result of the reference signal of the beam is greater than or equal to the first threshold.
  • the second requirement is that the measurement of the beam is greater than the second threshold.
  • the second requirement may also be that the measurement result of the beam is greater than or equal to the second threshold. Not satisfying the first requirement can also be understood as satisfying the first condition that the measurement result of the reference signal of the beam is less than or equal to the first threshold or less than the first threshold.
  • Step 403 The first terminal device sends the first information, where the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device, and the non-serving beam set indicating the first terminal device The s beams satisfying the second requirement.
  • the number of beams in the set of service beams is greater than t, and t is a positive integer.
  • the first terminal device sends a message to the access network device to indicate that the link fails, in the manner that the first requirement is not met in the service beam set, and the first terminal device sends a message to the access network device to indicate that the link fails. This manner can avoid link failure or reduce the link from the link.
  • the time to failure to resume normal communication increases the robustness of wireless communication. In turn, improve system performance.
  • the first terminal device determines the t beams by measuring reference signals of the plurality of service beams.
  • the first terminal device determines the s beams by measuring reference signals of the plurality of non-serving beams.
  • step 403 the first terminal device generates first information and then transmits the first information.
  • the first terminal device transmits the first information to the access network device when one of the following conditions is met.
  • Condition 1 There are at least t beams that do not satisfy the first requirement in the service beam set, and there are beams in the non-serving beam set that satisfy the second requirement. That is, the measurement result of the reference signal of the t beams in the service beam set of the first terminal device is less than or equal to the first threshold, and the measurement result of the at least one beam in the non-serving beam set of the first terminal device is greater than the Second threshold.
  • t 1.
  • the first threshold and the second threshold may be the same.
  • the first threshold may be the same as or different from the second threshold, for example, the second threshold is greater than the first threshold. Taking the measurement result as an example of RSRP, the first threshold is 2 dB, and the second threshold is 4 dB.
  • Condition 2 At least R beams in the non-serving beam set satisfy the second requirement, and at least R beams in the service beam set do not satisfy the first requirement. That is, the best R beams in the non-serving beam are better than the R beams in the service beam. And the best R beams in the non-serving beam satisfy the second requirement. The R beams with the worst measurement results in the service beam do not satisfy the first requirement.
  • the measurement result A is better than the other measurement result B, and the measurement result A may be larger than the measurement result B.
  • the first information may be a beam failure recovery request message.
  • a possible format for the first message is as follows:
  • the beam resource identifier in the set of failed beams is the identification (ID) of the t beams in the service beam set that do not satisfy the first requirement.
  • ID the identification of the t beams in the service beam set that do not satisfy the first requirement.
  • ⁇ Beams resource identifier (beam resource ID) ⁇ L1 subscripts L1 represents a beam identifier set of resources in a maximum of L1-ID;
  • ⁇ beams resource identifier (beam resource ID) ⁇ subscript L2 L2 represents beam resource identifier set There are up to L2 identifiers.
  • the first terminal measures the reference signals of the X non-serving beams, and the Y beams of the X non-serving beams satisfy the second requirement.
  • the first terminal selects s beams from the Y beams, and feeds the identifiers of the s beams to the access network device. Then, the beam resource identifier in the candidate beam set is the identifier of the s beams.
  • the beam resource identifier may be a synchronization signal block identifier or a channel state information reference signal identifier.
  • the beam resource identifier may be a side line synchronization signal identifier and a sounding reference signal identifier.
  • the side line synchronization signal identifier may be a side line primary synchronization signal identifier, a side line secondary synchronization signal identifier, and a side line physical broadcast channel demodulation reference signal identifier.
  • Step 404 The access network device uses q beams of the s beams as the service beam of the first terminal device and uses t beams as the non-serving beams of the first terminal device. Since the service beam does not include t beams that do not meet the first requirement, system resources are saved and interference to other terminals is reduced.
  • using q beams of the s beams as service beams of the first terminal device and t beams as non-serving beams of the first terminal device including: the access network device from the service beam set of the first terminal device And deleting the t beams, and adding the q beams to a service beam set of the first terminal device.
  • the q beams in the s beams are used as service beams of the first terminal device, and the data is sent to the first terminal device by using the q beams.
  • Using the t beams as the non-serving beams of the first terminal includes: stopping sending data to the first terminal device by using the t beams.
  • the access network device After receiving the first information, the access network device determines the updated service beam according to the first information. For example, the first information indicates that beam 1 does not meet the first requirement and beam 5 satisfies the second requirement. According to the first information, the access network device removes the beam that does not meet the first requirement in the service beam of the first terminal device from the service beam, and adds the non-serving beam of the first terminal device that meets the requirement to the service beam.
  • the updated service beam is beam 1, 2, 3, 5.
  • the q beams of the s beams are used as the service beam of the first terminal device and the t beams are used as the non-serving beams of the first terminal device, including: sending, by using the service beam of the first terminal device, the first terminal device Data, wherein the service beam of the first terminal device includes the q beams and does not include the t beams.
  • the access network device transmits reference signals and data through beams 1, 2, 3, 5. That is, the reference signal is transmitted through beams 1, 2, 3, 5, and the data is also transmitted through beams 1, 2, 3, 5.
  • the antenna port of the measurement service beam configured by the access network device to the first terminal device may be unchanged. That is to say, the first terminal device also measures the reference signal corresponding to the antenna ports 1, 2, 3, 4, but the beam corresponding to the antenna port 1 changes from the beam 1 to the beam 5.
  • the access network device can also change the antenna port of the measurement service beam that is configured to the first terminal device.
  • the antenna port of the measurement service beam of the first terminal device changes from antenna ports 1, 2, 3, 4 to antenna ports 1, 2, 3, 5.
  • antennas 1 to 5 also correspond to beams 1 to 5, respectively.
  • the access network device may further send the second information to the first terminal device.
  • the second information is used to indicate that the service beam of the first terminal device has been updated or is used to indicate that the first information is acknowledged.
  • the first terminal device can receive the data sent by the transmitting end in the updated beam direction in time, thereby improving the robustness of the communication.
  • the second information may be a beam failure recovery message.
  • the first terminal device detects the second information within a time window. If within the time window, the first terminal device does not detect the second information. The first terminal device transmits the first information again, and then detects the second information within a time window. If the second information is still not received, the first terminal device sends the first information for the third time, and so on.
  • the physical layer of the first terminal device sends a notification to the upper layer to notify the high-level radio link that the failure has occurred.
  • the upper layer may be a radio resource control (RRC) layer.
  • RRC radio resource control
  • Example 1 The wireless communication method provided in FIG. 4 will be further described below by taking Example 1 as an example.
  • the first device is an access network device and the second communication device is a first terminal device. Wherein one beam corresponds to one or more antenna ports.
  • the four service beams are respectively recorded as beams 1, 2, 3, and 4.
  • the two non-serving beams are respectively recorded as beams 5 and 6.
  • Beam 1 corresponds to one antenna port and corresponds to antenna port 1;
  • beam 2 corresponds to one antenna port and corresponds to antenna port 2;
  • beam 3 corresponds to 2 antenna ports, and corresponding antenna ports 3 and 4;
  • beam 4 corresponds to 2 antenna ports,
  • reference beam 5 corresponds to one antenna port, and corresponds to antenna port 7;
  • beam 6 corresponds to one antenna port, and corresponds to antenna port 8.
  • the access network device sends a reference signal corresponding to the antenna port to the first terminal device. It is assumed that the reference signal corresponding to antenna port 1 is recorded as reference signal 1; the reference signal corresponding to antenna port 1 is reference signal 2; the reference signal corresponding to antenna ports 3 and 4 is recorded as reference signal 3; the reference signal corresponding to antenna ports 5 and 6 It is referred to as reference signal 4; the reference signal corresponding to antenna port 7 is recorded as reference signal 5; the reference signal corresponding to antenna port 8 is recorded as reference signal 6.
  • Reference signals 1 to 6 correspond to beams 1 to 6, respectively.
  • the first terminal device measures the reference signals 1 to 6, respectively. Assume that the measurement criterion is RSRP. When the RSRP satisfies the condition 1 described above, the terminal device transmits the first information. And the first threshold of condition 1 is 1 decibel (dB), the second threshold is equal to the first threshold; and at least one of the service beams in condition 1 is less than the first threshold, and at least one of the candidate beams is RSSP When the second threshold is exceeded, the terminal device sends the first information.
  • RSRP decibel
  • the RSRPs of the reference signals 1, 2, 3, and 4 measured by the terminal device are -2 dB, 0 dB, 6 dB, and 10 dB, respectively, and the RSRP of the reference signals 5, 6 are 0.5 dB and 5 dB, respectively. Since the measurement result of the reference signal 1, 2 (ie, the service beam 1, 2) is smaller than the first threshold, the measurement result of the reference signal 6 (non-serving beam 6) is greater than the second threshold. The terminal device expects the beam 6 to become a serving beam.
  • the first terminal device sends first information to the access network device, the first information indicates that the beam 1 (service beam) does not satisfy the first requirement, and the beam 6 (non-serving beam) satisfies the second requirement.
  • the access network device parses out that the terminal device does not include the service beam number 1 in the service beam.
  • the access network device also resolves that the terminal device expects beam 6 to be added to the serving beam.
  • the access network device updates the service beam according to the first information.
  • the access network device transmits the reference information and data to the terminal device on the update service beam transmission.
  • the updated service service beam includes beam 6 and does not include service beam 1.
  • the updated service beam is beams 2, 3, 4, 6.
  • the new service beam includes the original three service beams, ie beams 2, 3, 4, in addition to beam 1.
  • the new service beam also includes the beam 6 indicated by the terminal device.
  • the access network device can also reference the new non-serving beam to the terminal device.
  • the new non-serving beam can be a beam 5 and a new beam 7.
  • the new beam 7 corresponds to antenna port 9.
  • the new non-serving beam can also be beam 5 and beam 1.
  • Example 2 is based on Example 1, and the main differences from Example 1 are as follows:
  • the RSRP of the service beams 1 and 2 is less than 1 dB, which satisfies Condition 1.
  • the updated service beam is beam 3, 4, 6.
  • Example 2 The other parts in Example 2 can be seen in Example 1, and are not described here.
  • Example 3 is based on Example 1, and the following are the differences between Example 3 and Example 1.
  • the second threshold is different from the first threshold.
  • the second threshold is 2 dB.
  • the new service beam expected by the terminal device is also the beam 6, so the difference from the example 1 is only at the second threshold.
  • Example 4 is based on Example 1, and the main difference from Example 1 is that the condition that the terminal device transmits the first information is Condition 2, instead of Condition 1 in the example. And in Example 4, the RSPR of the reference signal 5 is 4 dB. The other difference is the difference due to the difference between Condition 2 and Condition 1. See Example 1 for other conditions.
  • Condition 2 is satisfied. Therefore, as in Example 1, the first information indicates that the service beam 1 does not satisfy the first requirement, and the non-serving beam 6 satisfies the second requirement. The subsequent steps can be seen in Example 1, and are not described here.
  • Case 2 R>1.
  • the RSRP of the non-serving beams 5 and 6 is 4 dB and 5 dB, respectively.
  • the beams 1 and 2 are the two worst RSRP beams, and the RSRP is -2 dB and 0 dB, respectively.
  • Condition 2 is satisfied.
  • the terminal device transmits the first information to the access network device, the first information indicating the service beam 1, 2 that is expected to be replaced, and indicating the service beam 5, 6 that is expected to be newly added.
  • the access network device After receiving the first information, the access network device sends the updated service beam including four beams, which are beams 3, 4, 5, and 6. After receiving the first information, the access network device may also send a reference signal of the updated non-serving beam, for example, the updated non-serving beam reference signal is the beam 7, 8.
  • the updated non-serving beam may also be the original beam 1, 2.
  • Example 5 can be based on Example 1 - Example 4, and Example 1 - Example 4, respectively, but with the following differences.
  • the reference signals are all SRS.
  • Example 5 the first device is a terminal device. In Example 1 - Example 4, the first device is an access network device.
  • Example 1 For other steps, see Example 1 - Example 4, and details are not described again.
  • multiple vehicles may form a fleet of vehicles including a head unit and one or more fleet member equipment.
  • the head device can transmit and receive control information with the access network device.
  • the access network device performs multicast communication with the vehicle formation, it will send a reference signal to the vehicle formation through the service beam and the non-serving beam, and send data to the vehicle formation through the service beam.
  • Figure 3 shows a schematic diagram of vehicle formation communication.
  • the first communication device may be a chip in an access network device or an access network device, or may be a chip in a terminal device or a terminal device device, and the second communication device and the third communication device are terminal devices.
  • FIG. 5 will be described with the first communication device being an access network device, the second communication device being a terminal device located at the front of the vehicle, and the third communication device being a terminal device of a member of the fleet.
  • the first communication device is represented as an access network device
  • the second communication device is represented as a head device
  • the third communication device is represented as a fleet member.
  • Step 501 The access network device sends a reference signal of the service beam of the fleet, and a reference signal of the non-serving beam.
  • the reference signal of the service beam and the reference signal of the non-serving beam described above are reference signals for the fleet.
  • Terminal devices in a terminal group are terminal devices in a fleet. Or the terminal equipment in the fleet constitutes the terminal group.
  • Step 502 The head device and the fleet member device respectively obtain the measurement result according to the reference signal.
  • the head device and the fleet member device can obtain the measurement result of the reference signal of the service beam by detecting the reference signal of the service beam.
  • the head unit and the fleet member device can obtain the measurement result of the reference signal of the non-serving beam by detecting the reference signal of the non-serving beam.
  • Step 503 The team member device sends third information to the head device, where the third information is used to indicate that the beam of the service beam of the team member does not meet the first requirement, and that the non-serving beam of the team member meets the second requirement. Beam. Regarding the first requirement, the second requirement, referring to FIG. 4 and Example 1 to Example 5, details are not described again.
  • the team member equipment determines whether to send the third information to the head unit.
  • the condition that the team member device sends the third information reference may be made to condition 1 and condition 2 in which the first terminal sends the first information in FIG. 4, and details are not described herein again.
  • the third information refer to the first information in FIG. 4, and details are not described herein again.
  • the front device determines the first information sent to the access network device according to the third information of each team member and the measurement result of the front device, and the first information is used to indicate the t beams in the service beam of the fleet that do not meet the first requirement. And indicating s beams in the non-serving beam of the fleet that meet the second requirement.
  • Step 504 The first device sends the first information to the access network device, where the first information is used to indicate t beams that do not meet the first requirement in the service beam set, and s beams that meet the second requirement in the non-serving beam set.
  • Step 505 Use q beams of the s beams as service beams of a fleet (or terminal equipment group) and use the t beams as non-serving beams.
  • the access network device determines the updated service beam based on the first information.
  • the access network device transmits reference signal data through the updated service beam.
  • the access network device may also send second information to the head device for indicating that the service beam of the fleet has been updated.
  • the second information is used to indicate receipt of the first information.
  • the second information may be a beam failure recovery message.
  • the head unit performs the second information detection within a time window. If the head unit does not detect the second message within the time window. The front of the vehicle sends the first message again and then detects the second message within a time window. If the second message has not been received, the head device transmits the first message for the third time, and so on. When the number of times the first device repeatedly transmits the first information reaches a predefined number of times, the physical layer of the head device sends a notification to the upper layer to notify the high-level radio link that the failure has occurred.
  • the upper layer can be a radio resource control (RRC) layer.
  • RRC radio resource control
  • the head unit determines whether the head unit needs to be replaced based on the received third information of the fleet member equipment and the measurement results of the fleet equipment.
  • step 504 For other descriptions of step 504, refer to step 404, and details are not described herein.
  • Example 6, Example 7, and Example 8 are further illustrated in FIG.
  • the entire fleet can be used as a terminal device, and the front device represents the terminal device. That is to say, for the access network device, the individual terminal devices are not distinguished.
  • the head unit feeds back the condition of the service beam and the non-serving beam measurement in the entire fleet to the access network device.
  • the access network device obtains t service beams that do not meet the first requirement for the vehicle team through the feedback of the vehicle head device, and s beams that meet the second requirement.
  • the access network device cannot obtain which of the service devices in the fleet does not satisfy the first requirement, and which non-service beam of the terminal device meets the second requirement.
  • the head device is similar to the first terminal device in FIG. Example 6 gives a description of the fleet equipment as a whole.
  • the access network equipment can also distinguish between different equipment in the fleet. That is to say, the head device not only feeds back the identifier of the terminal device to the access network device, but also feeds back to the access network device the t1 service beams that the terminal device does not meet the first requirement, and the s1 beams satisfying the second requirement.
  • Example 7 illustrates this situation.
  • Example 6 There are front equipment A, fleet member equipment B and fleet member equipment C in the vehicle formation, which are respectively recorded as terminal A, terminal B, and terminal C.
  • the access network device transmits a reference signal of the same serving beam and a reference signal of the non-serving beam to each device of the vehicle formation. That is to say, the reference signal of the service beam of the fleet is the reference signal of the service beam of each device in the fleet.
  • the reference signal for the fleet's non-serving beam is the reference signal for the non-serving beam of each device in the fleet.
  • the service beam set of terminal B is the service beam set of the fleet, and the terminal B non-serving beam set is the non-serving beam set of the fleet.
  • terminals A and C the service beam of the fleet is represented as the service beam of the terminal equipment group.
  • the terminal equipment of the terminal group is the terminal equipment in the fleet.
  • the team is represented as a terminal group.
  • the number of service beams is N, and the number of reference signals for non-serving beams is M.
  • the beam is in one-to-one correspondence with the reference signal.
  • reference signals 1, 2, 3, 4 are reference signals for service beams 1 to 4 (service reference signals of the terminal group), respectively; reference signals 5, 6 are reference signals for non-serving beams 5, 6, respectively (terminal Group of non-service reference signals).
  • reference signals 1, 2, 3, 4, 5, 6, see Example 1. These six reference signals are transmitted by different beams.
  • terminal A, terminal B, and terminal C detect the reference signals of the four service beams and the reference signals of the two non-serving beams.
  • terminal A, terminal B, and terminal C periodically detect the six reference signals.
  • step 503 if condition 1 (or condition 2) is satisfied, terminal B (and/or terminal C) sends third information to terminal A for indicating the identity of the service beam that does not satisfy the first requirement, and The identity of the non-serving beam that satisfies the second requirement.
  • terminal B sends the third information to the terminal A, where the third information is used to indicate that the service beam of the terminal device group does not satisfy the first requirement of the t1 beams, and the non-serving beam of the terminal group is required to satisfy the second Required s1 beams.
  • the terminal A sends the first information to the access network device according to the received third information of the terminal B (and/or the terminal C) and the self measurement result.
  • the first information indicates that the beam that does not meet the first requirement for the terminal group, that is, the terminal A, the terminal B, and the measurement result of the terminal C does not satisfy the first requirement.
  • the first information may also indicate a non-serving beam that satisfies the second requirement for the vehicle fleet, that is, the measurement result of the beam by the terminal A or the terminal B or the terminal C satisfies the second requirement. Since the detection of the beam of the plurality of terminal groups is transmitted through the terminal A, the signaling overhead with the access network device can be reduced.
  • the RSRP values of the four service beams (beams 1 to 4) measured by terminal B are -2 dB, 0 dB, 1.5 dB, 3 dB, and the RSRP values of the two non-serving beams (beams 5, 6) are 0.5 dB, 2 dB.
  • the above RSRP satisfies the condition 1, and the terminal B sends the third information to the terminal A. And the service beam 1, 2 and the non-serving beam 6 are indicated in the third information.
  • the RSRP values of the four service reference signals measured by the terminal C are -2 dB, 2 dB, 0.5 dB, 3 dB, and the RSRP values of the two candidate beams are 1.5 dB and 0.5 dB. Since the above RSPR of the terminal C also satisfies the condition 1, the terminal C sends the third information to the terminal A, and the third information indicates that the beam 1, 3 does not satisfy the first requirement and the beam 5 satisfies the second requirement.
  • the RSRP values of the four service beams measured by terminal A are -2dB, -0.5dB, 1.5dB, 3dB, and the RSRP values of the two non-serving beams are 0.5dB, 2dB.
  • the beam does not satisfy the first requirement, and the beam 6 satisfies the second requirement.
  • the third information transmitted by the terminal A according to the terminal B and the terminal C and the measurement status of the terminal are summarized as follows:
  • the first information sent by the terminal A to the access network device indicates that the beam 1 does not satisfy the first requirement, and the beams 5 and 6 satisfy the second requirement.
  • Example 7 is based on Example 6, and the service beam of Example 6 mainly lies in Terminal A, Terminal B, and Terminal C is not exactly the same.
  • the non-serving beams of terminal A, terminal B, and terminal C are not identical. That is to say, the service beam set of each terminal may be a true subset of the service beam of the fleet.
  • the beams in the service beam set of the fleet are beams 1, 2, 3, 4, 7, 8, 9, 10, 13, 14, 15, 16.
  • the beams in the fleet's non-serving beam set are beams 5, 6, 11, 12, 17, 18.
  • the beams in the service beam set are beams 1, 2, 3, 4, respectively corresponding to reference signals 1, 2, 3, 4; the beams in the non-serving beam set are beams 5, 6, and reference Signals 5 and 6 correspond to each other.
  • the beams in the service beam set are beams 7, 8, 9, 10, respectively corresponding to reference signals 7, 8, 9, 10; the beams in the non-serving beam set are 11, 12, and reference signals 11,12 correspond to each.
  • the beams in the set of service beams are beams 13, 14, 15, 16 corresponding to reference signals 13, 14, 15, 16 respectively; the beams in the non-serving beam set are beams 17, 18, and reference signals 17,18 correspond respectively.
  • Beams 1-18 are characterized by antenna ports 1-18, respectively. That is to say, the beam 1-18, the reference signal 1-18 and the antenna port 1-18 are all in one-to-one correspondence.
  • beam 1 corresponds to reference signal 1, and also corresponds to antenna port 1;
  • beam 2 corresponds to reference signal 2, also corresponds to antenna port 2, and so on.
  • the terminal B (and, or the terminal C) transmits, to the terminal A, the identifier of the service beam that does not satisfy the first requirement, and the identifier of the non-serving beam that satisfies the second requirement, through the third information.
  • the terminal B sends the third information to the terminal A, where the third information is used to indicate the t beams in the service beam set of the terminal B that do not meet the first requirement, and the non-indication of the terminal B.
  • the terminal A sends the first information to the access network device according to the received third information of the terminal B and the terminal C and the self measurement result.
  • the first information indicates a service beam of each device (including itself) that does not satisfy the first requirement and a non-serving beam that satisfies the second requirement.
  • the RSRP values of the four service beams 7-10 measured by the terminal B are -0.5 dB, 0 dB, 2 dB, 2.5 dB, and the measured RSRP values of the two non-serving beams 11, 12 are 2 dB, 0.5 dB. Since the terminal B satisfies the condition 1, the terminal B sends the third information to the terminal A, the third information indicating the service beam that does not satisfy the first requirement (for the terminal B) 7, 8 and the non-serving beam 11 that satisfies the second requirement. .
  • the RSRP values of the four service beams 13-16 measured by the terminal C are -0.5 dB, 2 dB, 0 dB, 3 dB, and the measured RSRP values of the two non-serving beams 11, 12 are 0 dB, 2 dB. Since terminal C satisfies condition 1, terminal C transmits a third information to A indicating that the service beam (for terminal C) 13, 15 that does not satisfy the first requirement, and the non-serving beam 18 that satisfies the second requirement.
  • the RSRP value of the service beam 1-4 measured by the terminal A itself is 0 dB, 0.5 dB, 2 dB, 3 dB, and the RSRP value of the non-serving beam 5, 6 is 2 dB, 1 dB.
  • the terminal A sends the first information to the access network device according to the third information of the terminal B, the terminal C, and the measurement of the terminal, and the service beam that does not meet the first requirement of each terminal in the first information fleet and the second requirement are met.
  • Non-serving beam That is, the first information indicates:
  • a beam 1, 2 (service beam) of the terminal A that does not satisfy the first requirement, and a beam 5 (non-serving beam) that satisfies the second requirement;
  • a beam 7, 8 (service beam) of the terminal B that does not satisfy the first requirement, and a beam 11 (non-serving beam) that satisfies the second requirement;
  • Beam management messages include K ⁇ user beam management fields ⁇
  • the user identifier may be the identifier of the terminal A, the identifier of the terminal B, and the identifier of the terminal C.
  • terminal A the terminal A beam management message is expressed as follows:
  • Failure beam set ⁇ beam resource identification is beam 1 and beam 2 ⁇ L1
  • the access network device updates the service beam and the non-serving beam of each terminal device in the fleet according to the first information.
  • the access network device can update the beams of the terminal A, the terminal B, and the terminal C as follows:
  • the access network device removes the beam 1, 2 from the service beam set of the terminal A, and adds the beam 5 to the service beam set.
  • the beam in the service beam set of terminal A includes beams 3, 4, 5, excluding beams 1, 2.
  • the access network device removes the beams 7, 8 from the set of service beams of the terminal B, and adds the beam 11 to the set of service beams. After the update, the beam in the service beam set of terminal B includes beams 9, 10, 11, excluding 7, 8.
  • the access network device removes the beams 13, 15 from the set of service beams of the terminal C, and adds the beam 18 to the set of service beams.
  • the beam in the set of service beams of terminal B includes beams 14, 16, 18, excluding 7, 8.
  • Example 8 is based on Example 7.
  • the service beam of the terminal A, the terminal B, and the terminal C, the non-serving beam and its corresponding reference signal, and the antenna port are the same as the example 7.
  • the RSRP measured by the terminal B and the terminal C is the same as the example 7
  • the third information transmitted by the terminal B and the terminal C to the terminal A is the same as the example 7 .
  • the RSRP values of the four service beams measured by the terminal A itself are 0 dB, 0.5 dB, 2 dB, and 3 dB
  • the RSRP values of the two non-serving beams are 0 dB and 0.5 dB.
  • the beam 1, 2 of the terminal A does not satisfy the first requirement, and there is no non-serving beam that satisfies the second requirement.
  • the terminal A sends the first information to the access network device according to the notification information of the terminal B, the terminal C, and the measurement of the terminal C.
  • the service reference signal indicating the failure in the first information is 1, 2, 7, 8, 13, 15 and available.
  • the candidate service reference signal is 11,18.
  • the condition for replacing the head unit is that the head unit has a beam that does not meet the first requirement, but does not have a non-serving beam that satisfies the second requirement.
  • the member of the fleet member can be set as the front equipment by the access network device:
  • the access network device determines that the terminal A needs to be set as a fleet member device according to the received first information sent by the terminal A. Since both the terminal B and the terminal C satisfy the condition of becoming the head device, the access network device can set the terminal B or the terminal C as the head device.
  • the access network device transmits a head device replacement message to all of the fleet devices, and the head device replacement message indicates that the terminal B or the terminal C is the head device. Since the head device replacement message indicates that the terminal B or the terminal C is the head device, by default, the terminal A becomes a fleet member device. Optionally, the head device replacement message further indicates that terminal A is a fleet member device (no longer a head device).
  • Example 7 the service beam and the non-serving beam of the terminal A, the terminal B, and the terminal C are different.
  • the service beam and the candidate beam of the terminal A, the terminal B, and the terminal C may also be partially identical and partially different.
  • terminal A has a service beam of 1, 2, 3, 4 and a candidate beam of 5, 6.
  • the service beam is 1, 2, 3, and 7 non-serving beams are 5, 8.
  • the service beam is 1, 2, 4, 9 and the non-serving beam is 6, 10.
  • the processing of the failure of the service reference signal in this case is similar to that of Example 7, Example 8, and will not be described again.
  • Example 7 the number of service beams of the terminal A, the terminal B, and the terminal C is the same; the non-serving beams of the terminal A, the terminal B, and the terminal C are the same.
  • the number of service beams of the terminal A, the terminal B, and the terminal C may also be different; the number of candidate service reference signals of the terminal A, the terminal B, and the terminal C may also be different.
  • the present application further provides a communication method, as shown in FIG. 6.
  • the principle, effect and the like of the method shown in FIG. 6 can be referred to the description in the technical solutions shown in FIG. 4, FIG. 5 and Examples 1 to 8.
  • Step 601 Receive first information.
  • the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device, and s beams that meet the second requirement in the non-serving beam set of the first terminal device.
  • a beam that satisfies the second requirement satisfies the first requirement.
  • the number of beams in the set of service beams is greater than t, and t is a positive integer.
  • the part of step 601 can refer to the content of step 403, and can also refer to the content of step 504.
  • Step 602 Use q beams of the s beams as service beams of the first terminal device and use the t beams as non-serving beams of the first terminal device.
  • the part of step 601 can refer to the content of step 404, and can also refer to the content of step 505.
  • the q beams of the s beams are used as service beams of the first terminal device, and the t beams are used as non-serving beams of the first terminal device, including:
  • a reference signal of a service beam in the set of service beams is transmitted, wherein a reference signal of a service beam in the set of service beams is used to determine whether the first requirement is met;
  • the second information is sent, the second information is used to indicate that the service beam of the first terminal device has been updated or used to indicate that the first information is acknowledged.
  • the receiving the first information comprises receiving the first information from a second terminal device.
  • the receiving the first information includes: receiving the first information from the first terminal device.
  • the first information is further used to indicate that t 2 beams in the service beam set of the second terminal device that do not meet the first requirement, and in the non-serving beam set indicating the second terminal device s 2 beams satisfying the second requirement.
  • the executor performing the method may be a communication device, where the communication device may be an access network device or a terminal device, or may be a chip in the access network device or a chip in the terminal device.
  • the present application further provides a communication method, as shown in FIG. 7.
  • the principles, effects, and the like of the method shown in FIG. 7 can be referred to the descriptions in the technical solutions shown in FIG. 4, FIG. 5 and Examples 1 to 8.
  • Step 701 Generate first information, where the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device, and indicate a non-serving beam set of the first terminal device.
  • the step 601 can refer to the content of step 403, and can also refer to the content of step 504.
  • Step 702 Send the first information.
  • Step 702 can refer to the content of step 403, and can also refer to the content of step 504.
  • receiving a reference signal of a service beam in the set of service beams measuring a reference signal of a service beam in the set of service beams, determining the result according to a measurement result of a reference signal of a service beam in the set of service beams Whether the reference signal of the service beam in the service beam set satisfies the first requirement.
  • receiving a reference signal of a non-serving beam in the non-serving beam set ; measuring a reference signal of a non-serving beam in the non-serving beam set, according to a reference signal of a non-serving beam in the non-serving beam set And measuring, determining whether the reference signal of the non-serving beam in the non-serving beam set satisfies the second requirement.
  • the second information is received, the second information is used to indicate that the service beam of the first terminal device has been updated, or the second information is used to indicate that the first information is acknowledged.
  • the first information is further used to indicate that t 2 beams in the service beam set of the second terminal device that do not meet the first requirement, and in the non-serving beam set indicating the second terminal device s 2 beams satisfying the second requirement.
  • the transmitting the first information includes:
  • the first information is sent:
  • sending the first information includes: the first terminal device sending the first information.
  • the sending the first information includes: sending, by the second terminal device, the first information.
  • the third information is received from the first terminal device, where the third information is used to indicate the t beams in the service beam set of the first terminal device that do not meet the first requirement, And indicating, in the non-serving beam set of the first terminal device, the s beams that meet the second requirement.
  • the executing entity that performs the method may be a communication device, and the communication device may be a terminal device or a chip in the terminal device.
  • the present application also provides a communication method, as shown in FIG. 8a.
  • the principles, effects, and the like of the method shown in FIG. 8a can be referred to the descriptions in the technical solutions shown in FIG. 4, FIG. 5, FIG. 6, and Examples 6 to 8.
  • Step 801a Receive first information, where the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the terminal device group, and that the non-serving beam set indicating the terminal device group meets The second required s beams, wherein the beam satisfying the second requirement satisfies the first requirement, the number of beams in the service beam set is greater than t, and t is a positive integer.
  • Step 801a may refer to the content of step 504.
  • Step 802a Send the first information.
  • the portion of step 802a may refer to the content of step 504.
  • a beam in the set of beams is used to transmit multicast data to the group of terminal devices.
  • the second information is sent, the second information being used to indicate that the service beam of the terminal device group has been updated or used to indicate receipt of the first information.
  • the executor performing the method may be a communication device, where the communication device may be an access network device or a terminal device, or may be a chip in the access network device or a chip in the terminal device.
  • the present application also provides a communication method, as shown in FIG. 8b.
  • the principle, effect and the like of the method shown in FIG. 8b can be referred to the description in the technical solutions shown in FIG. 4, FIG. 5 and Examples 6 to 8.
  • Step 801b Generate first information, where the first information is used to indicate that t beams that do not meet the first requirement in the service beam set of the terminal device group, and that are in the non-serving beam set indicating the terminal device group
  • the second required s beams wherein the beam satisfying the second requirement satisfies the first requirement, the number of beams in the service beam set is greater than t, and t is a positive integer.
  • Step 801b may refer to the content of step 504.
  • Step 802b Send the first information.
  • Step 802b may refer to the content of step 504.
  • the second information is received, the second information being used to indicate that the service beam of the set of terminal devices has been updated or to indicate receipt of the first information.
  • receiving a third information from a first terminal device the third information used for indicating the terminal device serving beam set does not satisfy the requirements t 1 of the first beams, and instructing the terminal group
  • the executing entity that performs the method may be a communication device, and the communication device may be a terminal device or a chip in the terminal device.
  • the present application also provides a communication method, as shown in FIG. 9a.
  • the principle, effect and the like of the method shown in FIG. 9a can be referred to the description in the technical solutions shown in FIG. 4, FIG. 5 and Examples 1 to 8.
  • Step 901a Receive first information, where the first information is used to indicate that part of the service beam in the service beam set of the first terminal device does not meet the first requirement.
  • Step 901a may refer to the content of step 403 and step 504.
  • Step 902a The q beams that meet the second requirement in the non-serving beam set of the first terminal device are used as the service beam of the first terminal device, where the beam that meets the second requirement satisfies the first Claim.
  • Step 902a may refer to the contents of steps 403 and 504.
  • the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device.
  • the first information is further used to indicate the first Among the non-serving beam sets of a terminal device, s beams satisfying the second requirement.
  • q of the s beams are used as service beams of the first terminal device and the t beams are used as non-serving beams of the first terminal device.
  • the executor performing the method may be a communication device, where the communication device may be an access network device or a terminal device, or may be a chip in the access network device or a chip in the terminal device.
  • the present application also provides a communication method, as shown in FIG. 9b.
  • the principle, effect and the like of the method shown in FIG. 9b can be referred to the description in the technical solutions shown in FIG. 4, FIG. 5 and Examples 1 to 8.
  • Step 901b Receive first information, where the first information is used to indicate that part of the service beam in the service beam set of the first terminal device does not meet the first requirement.
  • Step 902b Send the first information.
  • Steps 901b, 902b may refer to the contents of step 403 and step 504.
  • the first information is used to indicate t beams that do not meet the first requirement in the service beam set of the first terminal device.
  • the first information is further used to indicate the first Among the non-serving beam sets of a terminal device, s beams satisfying the second requirement. A beam that satisfies the second requirement satisfies the first requirement.
  • the executing entity that performs the method may be a communication device, and the communication device may be a terminal device or a chip in the terminal device.
  • the beam is characterized by an antenna port.
  • the first requirement is that the measurement result of the reference signal of the beam is greater than the first threshold.
  • the second requirement is that the measurement result of the reference signal of the beam is greater than the second threshold.
  • the measurements include:
  • Reference signal received power RSRP Reference signal received quality RSRQ, received signal strength indicator RSSI, or signal to interference plus noise ratio SINR.
  • the access network device may update the service beam according to the first information, so that the link failure or the reduction may be avoided.
  • the link fails to restore normal communication time, improving the robustness of wireless communication. In turn, improve system performance. .
  • one piece of information can also be divided into multiple pieces of information.
  • the content of the first information is represented by a plurality of information, and the first information may be divided into a first sub-information and a second sub-information.
  • the first sub information is used to indicate t beams that do not satisfy the first requirement among the multiple service beams of the first terminal device.
  • the second sub-information is used to indicate the s beams that meet the second requirement among the plurality of non-serving beams of the first terminal device.
  • the third information is similar to the first information, and may also be represented by multiple information, and is not described herein.
  • the access network device 20 can implement the method for accessing the network device in the embodiment of the present application.
  • the access network device 20 may include a controller or a processor 1001 and a transceiver 1002.
  • the controller/processor 1001 is sometimes also referred to as a modem processor.
  • the modem processor 1001 can include a baseband processor (BBP) (not shown) that processes the digitized received signal to extract information or data bits conveyed in the signal.
  • BBP baseband processor
  • DSPs digital signal processors
  • the BBP can also be implemented by a separate integrated circuit (IC).
  • the transceiver 1002 can be used to support the transmission and reception of information between the access network device 20 and the terminal device, and to support radio communication with the terminal device.
  • an uplink signal from a terminal device is received via an antenna.
  • the signal received from the antenna is adjusted (e.g., filtered, amplified, downconverted, digitized, etc.) by transceiver 1002 and provides input samples. And further processed by the processor 1001 to recover the service data and/or signaling information sent by the terminal device.
  • traffic data and/or signaling messages are processed by the terminal device and modulated by the transceiver 1002 to generate downlink signals for transmission to the terminal device via the antenna.
  • the access network device 20 can also include a memory 1003 that can be used to store program code and/or data for the access network device 20.
  • memory 1003 can be coupled to processor 1001, which stores program code and data.
  • the access network device 20 can implement the method performed by the access network device in the embodiment of the present application.
  • the transceiver 1002 can include separate receiver and transmitter circuits, or the same circuit can implement transceiving functions.
  • the access network device 20 can also include a communication unit 1004 for supporting the access network device 20 to communicate with other network entities. For example, it is used to support the access network device 20 to communicate with a network device or the like of the core network.
  • FIG. 11 is a schematic diagram of a possible structure of a terminal device in the above wireless communication system.
  • the terminal device is capable of performing the method provided by the embodiment of the present invention.
  • the terminal device may be the terminal device 10a or 10b in FIG.
  • the terminal device includes a transceiver 1101, a processor 1100, and a memory 1103.
  • the processor 1100 can include an application processor 1102 and a modem processor 1104.
  • Memory 1103 can be coupled to processor 1100, which stores program code and data. When the processor 1100 runs the code, the terminal device can implement the method performed by the terminal device in the embodiment of the present application.
  • the transceiver 1101 can condition (eg, analog convert, filter, amplify, upconvert, etc.) output samples and generate an uplink signal.
  • the uplink signal is transmitted to the access network device via the antenna.
  • the antenna receives the downlink signal transmitted by the access network device.
  • the transceiver 1101 can condition (eg, filter, amplify, downconvert, digitize, etc.) the signals received from the antenna and provide input samples.
  • Modem processor 1104 also sometimes referred to as a controller or processor, may include a baseband processor (BBP) (not shown) that processes the digitized received signal to extract information conveyed in the signal Or data bits.
  • BBP baseband processor
  • a modem processor 1104 may include an encoder 11041, a modulator 11042, a decoder 11043, and a demodulator 11044.
  • the encoder 11041 is for encoding the signal to be transmitted.
  • encoder 11041 can be configured to receive traffic data and/or signaling messages to be transmitted on the uplink and process (eg, format, encode, or interleave, etc.) the traffic data and signaling messages.
  • Modulator 11042 is used to modulate the output signal of encoder 11041.
  • the modulator can perform symbol mapping and/or modulation processing on the encoder's output signals (data and/or signaling) and provide output samples.
  • a demodulator 11044 is used to demodulate the input signal.
  • demodulator 11044 processes the input samples and provides symbol estimates.
  • a decoder 7043 is configured to decode the demodulated input signal.
  • the decoder 11043 de-interleaves, and/or decodes the demodulated input signal and outputs the decoded signal (data and/or signaling).
  • Encoder 11041, modulator 11042, demodulator 11044, and decoder 11043 may be implemented by a composite modem processor 1104.
  • Modem processor 1104 receives digitized data representative of voice, data or control information from application processor 1102 and processes the digitized data for transmission.
  • the associated modem processor can support one or more of a variety of wireless communication protocols of various communication systems, such as LTE, New Radio (NR), Universal Mobile Telecommunications System (UMTS), high speed. High Speed Packet Access (HSPA) and so on.
  • LTE Long Term Evolution
  • NR New Radio
  • UMTS Universal Mobile Telecommunications System
  • HSPA High Speed Packet Access
  • one or more memories may also be included in the modem processor 1104.
  • modem processor 1104 and the application processor 1102 may be integrated in one processor chip.
  • the memory 1103 is for storing program codes (sometimes referred to as programs, instructions, software, etc.) and/or data for supporting communication of the terminal device.
  • program codes sometimes referred to as programs, instructions, software, etc.
  • the memory 1003 or the memory 1103 may include one or more storage units, for example, may be a processor 1001 for storing program code or a storage unit inside the modem processor 1104 or the application processor 1102, or may Is an external storage unit separate from the processor 1001 or the modem processor 1104 or the application processor 1102, or may also be a storage unit including the processor 1001 or the modem processor 1104 or the application processor 1102 and with the processor 1001 or a modem
  • the processor 1104 or the components of the application processor 1102 are separate external storage units.
  • the processor 1001 and the modem processor 1104 may be the same type of processor or different types of processors. For example, it can be implemented in a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable gate array ( Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, other integrated circuit, or any combination thereof.
  • the processor 1001 and the modem processor 1101 may implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present invention.
  • the processor may also be a combination of computing function devices, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC) or the like.
  • a communication device 1200 is shown.
  • the communication device can be applied to the communication system shown in FIG. 1.
  • the communication device 1200 can implement the communication method of the terminal device in the embodiment of the present application, and can also implement the communication method of the access network device in the embodiment of the present application.
  • the apparatus 1200 includes at least one processing unit 1202, a transceiver unit 1201, and optionally a storage unit 1203.
  • the processing unit 1202, the transceiver unit 1201, and the storage unit 1203 are connected to each other by a circuit.
  • the storage unit 1203 is configured to store the application code that executes the solution of the present application.
  • the processing unit 1202 executes the program code, the wireless communication method of the embodiment of the present application may be implemented.
  • the transceiver unit 1201 may be the transceiver 1002
  • the storage unit 1203 may be the memory 1003
  • the processing unit 1202 may be the controller/processor 1001
  • the transceiver unit when the communication device is the terminal device 1201 may be transceiver 1101
  • storage unit 1203 may be memory 1103
  • processing unit 1202 may be processor 1100.
  • the processing unit 1202 may be a processor, and the transceiver unit 1201 may be an input/output interface, a pin or a circuit. Wait.
  • the processing unit 1202 can execute computer execution instructions stored by the storage unit 1203 to cause the chip to execute the wireless communication method in the embodiment of the present application.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the base station or terminal, such as a ROM or may be stored. Static information and instructions for other types of static storage devices, RAM, etc.
  • the present application also provides a computer storage medium having instructions stored therein that, when run on a computer, cause the computer to perform the method performed by the terminal device in the above method embodiments.
  • the present application also provides a computer storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the method performed by the access network device in the above method embodiments.
  • Embodiments of the present application also provide a computer program product comprising instructions that, when executed by a computer, cause the computer to perform the functions performed by the terminal device in the above method.
  • Embodiments of the present application also provide a computer program product comprising instructions that, when executed by a computer, cause the computer to perform the functions performed by the access network device in the above method.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and the present invention should not be The implementation of the embodiments constitutes any limitation.

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Abstract

Des modes de réalisation de la présente invention concernent un procédé et un appareil de communication sans fil. Le procédé peut être utilisé pour l'Internet des véhicules, par exemple pour la gestion de faisceaux d'ondes dans des systèmes V2X, LTE-V, V2V, et similaire. Le procédé comprend les étapes suivantes : un dispositif de réseau d'accès transmet, à un dispositif terminal au moyen de N faisceaux d'ondes de desserte et M faisceaux d'ondes non de desserte, des signaux de référence correspondant respectivement auxdits faisceaux d'ondes ; le dispositif terminal mesure les signaux de référence correspondant respectivement auxdits faisceaux d'ondes et obtient des résultats de mesurage ; si le résultat de mesurage d'au moins l'un des faisceaux d'ondes de desserte ne satisfait pas une première exigence et que le résultat de mesurage d'au moins un faisceau d'onde candidat satisfait la première exigence, le dispositif de terminal transmet, au dispositif de réseau d'accès, une demande de reprise après défaillance de faisceau d'onde pour indiquer le faisceau d'onde de desserte qui ne satisfait pas la première exigence et un faisceau d'onde non de desserte qui satisfait une seconde exigence ; le dispositif de réseau d'accès met à jour les faisceaux d'ondes de desserte d'après la demande de reprise après défaillance de faisceau d'onde.
PCT/CN2019/083802 2018-04-26 2019-04-23 Procédé et appareil de communication sans fil Ceased WO2019206111A1 (fr)

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