WO2023160461A1 - 侧行链路管理方法、装置和系统 - Google Patents

侧行链路管理方法、装置和系统 Download PDF

Info

Publication number
WO2023160461A1
WO2023160461A1 PCT/CN2023/076626 CN2023076626W WO2023160461A1 WO 2023160461 A1 WO2023160461 A1 WO 2023160461A1 CN 2023076626 W CN2023076626 W CN 2023076626W WO 2023160461 A1 WO2023160461 A1 WO 2023160461A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
beams
resource
information
request information
Prior art date
Application number
PCT/CN2023/076626
Other languages
English (en)
French (fr)
Inventor
吴昊
徐海博
彭文杰
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023160461A1 publication Critical patent/WO2023160461A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the embodiments of the present application relate to the communication field, and in particular, to a sidelink management method, device, and system.
  • Some wireless communication systems can support inter-communication between communication devices, for example, communication between multiple terminal devices, and this communication method is called sidelink communication.
  • Sidelink communication includes but not limited to device to device (D2D), proximity service (ProSe) communication, vehicle to everything (V2X) communication, cellular V2X (C-V2X) communication system, etc.
  • D2D device to device
  • ProSe proximity service
  • V2X vehicle to everything
  • C-V2X cellular V2X
  • the embodiments of the present application provide a sidelink management method, device, and system, which can reduce the limitation on the distance of the terminal equipment during the establishment of the sidelink and improve the success rate of the establishment of the sidelink.
  • a sidelink management method is provided, and the method is executed by a first terminal device.
  • the first terminal device repeatedly sends first request information to the second terminal device using multiple first beams to be selected, and the first request information is used to trigger a connection with the second terminal device;
  • the first terminal device uses The multiple first beams to be selected receive first feedback information from the second terminal device, where the first feedback information is used to feed back the first request information;
  • the first terminal device receives, according to the first feedback information, Feedback information, determining a first beam, where the first beam is one of the plurality of first candidate beams.
  • the first terminal device forms a beam scan by repeatedly sending the first request information in multiple directions, so that the second terminal device can use a beam with better reception quality to send the first feedback information according to the reception quality of the first request information, and the first The terminal device determines the first beam according to the reception of the first feedback information, so that during the sidelink establishment process, the first terminal device and the second terminal device can use beam scanning to establish a connection, improving the efficiency of sidelink establishment. success rate and application scenarios.
  • the first terminal device uses multiple first candidate beams to repeatedly send the first request information to the second terminal device, including one of the following operations: first The terminal device repeatedly sends the first request information to the second terminal device using a plurality of first candidate beams through a hybrid automatic repeat request (HARQ); the first terminal device uses a packet data convergence protocol (packet data convergence protocol, PDCP) uses multiple first candidate beams to repeatedly send the first request information to the second terminal device; the first terminal device repeatedly sends the first request information to the second terminal device through the PC5-S layer using multiple first candidate beams A request for information.
  • HARQ hybrid automatic repeat request
  • PDCP packet data convergence protocol
  • the first terminal device repeatedly sends the first request information to the second terminal device through the PC5-S layer using multiple first candidate beams A request for information.
  • the first terminal device uses HARQ retransmission, PDCP repetition, and PC5-S retransmission in different beam sending directions to send the first request information to form beam scanning, so that the second terminal device can send the first request according to the scanning method information, and select a beam whose receiving quality satisfies a preset condition as a beam used for connecting with the first terminal device.
  • the method further includes: sending, by the first terminal device, the numbers of the plurality of first candidate beams to the second terminal device.
  • the first terminal device sends the number of the first beams to be selected to the second terminal device, so that the second terminal device can receive the first request information according to the number of the second beams to be selected, quickly traverse all sending-receiving beam combinations, and select to receive
  • the beam whose quality meets the preset condition is used as the beam used for communication with the first terminal device, so as to improve the communication quality after the sidelink is established.
  • the first request information further includes indication information of the first candidate beam carrying the first request information
  • the first feedback information also includes Including indication information indicating the first beam.
  • the first terminal device uses multiple first candidate beams to send the first request information, it uses the first request information to indicate the first candidate beam carrying the first request information at the same time, so that the second terminal device determines that the reception quality meets the When receiving beams with preset conditions, at the same time, it can determine the first candidate beam corresponding to the receiving beam, and use the first feedback information to indicate the first candidate beam. After the first terminal device successfully decodes the first feedback information, it does not need to pass By comparing and selecting the first beam, the first candidate beam indicated by the first feedback information may be used as the first beam. The overhead of the first terminal equipment is reduced, and the speed of sidelink establishment is improved.
  • the reception quality of the first feedback information corresponding to the first beam is greater than a first threshold.
  • the first terminal device measures the first feedback information, and when using the first candidate beam to receive the first feedback information, it may stop measuring the Receiving and measuring the first feedback information carried on the remaining first candidate beams can quickly complete the coarse-grained beam pairing and reduce the scanning and measurement overhead of the first terminal device.
  • the first terminal device measures the first feedback information, and when using the first candidate beam to receive the first feedback information, it may select any of the first candidate beams whose reception quality is greater than the first threshold Selecting one of them as the first beam can complete coarse-grained beam pairing.
  • the reception quality of the first feedback information corresponding to the first beam is one of the reception qualities of the first feedback information corresponding to the plurality of first candidate beams Highest.
  • the first terminal device measures the first feedback information, and may use all the first candidate beams to measure the first feedback information carried by the second beam of the second terminal device, and select the first candidate with the highest receiving quality by comparison
  • the beam is used as the first beam, and the receiving quality of the first beam is also greater than the first threshold.
  • the beam with the best communication quality is selected as the first beam, which can improve the communication quality between the first terminal device and the second terminal device after the link is established.
  • the method further includes: the first terminal device sending resource indication information to the second terminal device, where the resource indication information is used to indicate dedicated resources .
  • the application instead of using the method of simultaneous transmission of reference signals and data, uses dedicated resources to send the first reference signal, thereby making beam pairing more convenient without being affected by data transmission, increasing the speed of beam pairing, and improving side travel
  • the dedicated resources can be periodic resources or aperiodic resources.
  • the method further includes: the first terminal device uses multiple third candidate beams based on the dedicated resource to send information to the first beam according to the first beam.
  • the second terminal device sends a first reference signal; the first terminal device receives a measurement report from the second terminal device; wherein the measurement report is used to indicate the reception quality of the first reference signal and the corresponding The third candidate beam.
  • the first terminal device uses multiple third candidate beams to send the first reference signal to the second terminal device, so that according to the measurement report received by the second terminal device on the first reference signal, from the third candidate Determine the third beam among the beams to obtain a third beam with a finer granularity compared to the first beam, so that after the sidelink link between the first terminal device and the second terminal device is established, better communication quality can be obtained .
  • the method further includes: the first terminal device determines a third beam according to the measurement report; the third beam is the plurality of first beams One of three candidate beams.
  • the first terminal device selects an appropriate third beam to be selected as the third beam according to certain preset conditions, thereby determining its own fine-grained beam as the third beam with the second terminal device.
  • the beam used for communication is not limited to Bluetooth, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, etc.
  • the first terminal device selects the third candidate beam with the highest reception quality as the third beam according to the measurement report, so as to obtain better communication quality
  • the first terminal device arbitrarily determines one of the multiple third candidate beams whose reception quality satisfies the threshold value as the third beam according to the measurement report.
  • the resource of the first reference signal is a periodic resource.
  • the first terminal device may send resource indication information to the second terminal device.
  • the resource is a dedicated resource and is periodically configured, so that the second terminal device can receive the resource indication information and the corresponding reference information more conveniently. signal to quickly perform beam pairing on the sidelink.
  • the method before the first terminal device repeatedly sends the first request information to the second terminal device using multiple first candidate beams, the method further includes: the The first terminal device acquires the multiple first candidate beams.
  • the plurality of first candidate beams used by the first terminal device to send the first request information may be all beams of the first terminal device, or may be some beams of the first terminal device.
  • a terminal device may also determine the multiple first candidate beams from more beams, thereby speeding up the efficiency of the unicast connection.
  • the first terminal device may send a third reference signal (which may be an SSB signal) and determine the plurality of first candidate beams according to feedback information from other terminal devices receiving the third reference signal (details will be described later) ;
  • the first terminal device may periodically scan the reference signals (which may be SSB signals) sent by other terminal devices and determine the multiple first candidate beams according to the reception quality; or, the first terminal device may also use other methods, such as The positions of the surrounding terminal devices known in advance determine the multiple first candidate beams, etc., which will not be described in detail here.
  • the acquiring the multiple first candidate beams by the first terminal device includes: acquiring the nth resource configuration parameter by the first terminal device, the The nth resource configuration parameter includes an nth number threshold H n , where n is a positive integer; the first terminal device uses the nth resource configuration parameter according to the nth resource configuration parameter B n beams send a third reference signal; the first terminal device receives second feedback information from multiple terminal devices, the second feedback information is used to indicate A n beams, and the A n beams belong to all The B n beams, the reception quality of the A n beams is greater than or equal to the reception quality threshold; the first terminal device determines the plurality of first candidate beams according to the quantitative relationship between A n and H n .
  • the first terminal device will determine a plurality of first candidate beams, specifically, the third reference signal may be sent according to the nth configuration parameter, and A n beams may be determined according to information fed back by multiple terminal devices, Multiple first candidate beams are determined according to the quantitative relationship between A n and H n .
  • the first terminal device may determine multiple first candidate beams according to the quantitative relationship between A1 and H1 . If n is greater than or equal to 2, the first terminal device can determine multiple first candidate beams according to the quantitative relationship between A n and H n , and determine multiple first candidate beams according to the quantitative relationship between A n and H n . Before the beam to be selected, the first terminal device may respectively send reference signals according to the first resource configuration parameter to the n-1th resource configuration parameter, and the number of A 1 and H 1 is related to the number of A n-1 and H n-1 Quantitative relationships satisfy certain conditions.
  • the second feedback information may indicate the A n beams in an explicit or implicit manner, the indication is through directly indicating the beam index, ID, resource, etc. in the second feedback information, and the implicit manner is through the feedback of the second feedback information
  • the resource location indicates the beam.
  • the first terminal device determines the plurality of first candidate beams according to the quantitative relationship between An and Hn , including: When A n ⁇ H n , determine the A n beams as the multiple first candidate beams.
  • the first terminal device may use the A n beams as multiple first candidate beams to send DCR information to perform unicast connections with other terminal devices (for example, the second terminal device), since beams with no direction to the terminal device may be eliminated, It can improve the efficiency of unicast connection.
  • the number of selected beams exceeds H n , it can avoid the selection of fewer beams so that no suitable beams can be selected for subsequent unicast connections (some beams may be due to short-term obstacles or short-term acceptance due to the movement of terminal equipment lower quality).
  • the first terminal device determines the plurality of first candidate beams according to the quantitative relationship between An and Hn , including: When A n ⁇ H n , the B n beams are determined as the plurality of first candidate beams.
  • the first terminal device may use the B n beams sending the third reference signal as multiple first candidate beams Send DCR information.
  • the number of beams with high reception quality is lower than the threshold, which may be caused by the movement of the terminal equipment.
  • the mismatch between the reference signal transmission period and the reception period causes the reception quality of some beams to be very low, or the reception quality of the beams may be caused by the movement of the terminal equipment.
  • B n beams are used instead of A n beams with a lower number to send DCR information, which is conducive to selecting better beams during unicast connections and improving the quality of subsequent communications.
  • the first terminal device determines the plurality of first candidate beams according to the quantitative relationship between An and Hn , including: When A n ⁇ H n , the first terminal device obtains the n+1th resource configuration parameter, determines the plurality of first candidate beams according to the n+1th resource configuration parameter, and the nth resource configuration parameter Including the nth period, the nth interval and the nth resource, the n+1th resource configuration parameters include the n+1th period, the n+1th interval and the n+1th resource, the nth period, the nth n interval, the nth resource is divided are the sending cycle of the third reference signal configured in the nth resource configuration parameter, the sending interval of the third reference signal within one sending cycle, and the sending resource of the third reference signal, the nth +1 period, the n+1th interval, and the n+1th resource are respectively the transmission period of the third reference signal configured in the n+1th resource configuration parameter
  • the transmission interval of the three reference signals, the transmission resource of the third reference signal, and the n+1th resource configuration parameter satisfy at least one of the following: the n+1th period is less than the nth period; the nth +1 resource is less than said nth resource.
  • the first terminal device can obtain the n+1th resource configuration parameter, so that it can use the n+1th resource configuration parameter to continue sending reference signals, and determine the A n+1th resource configuration parameter.
  • the number of beams with better reception quality obtained by the first terminal device using the nth resource configuration parameters is lower than the preset threshold, which may be due to the fact that the sending period of the third reference signal does not match the receiving period or the information carried by different sending beams in the same sending period
  • the sending interval of the third reference signal does not match the receiving interval.
  • the sending cycle of the reference signal is reduced or within the same cycle
  • the sending interval of the signal it may be possible to obtain more beams whose reception quality is greater than the preset threshold, which is convenient for use in subsequent unicast connections.
  • the first network device When the n+1th resource is smaller than the nth resource, the first network device reduces the resources configured for the first terminal device to send reference signals, so that the first terminal device may form a smaller number of beams through beamforming, and a single The coverage area of the beam is increased. In this way, even if the number of beams whose reception quality is greater than the preset threshold is obtained through the n+1th resource configuration parameter remains unchanged or decreases, it is easy to find a beam with better quality during a unicast connection.
  • obtaining the n+1th resource configuration parameter by the first terminal device includes: when the A n ⁇ H n , the first terminal device sending request information to the first network device, where the request information is used to obtain the n+1th resource configuration parameter; the first terminal device receives the n+1th resource configuration parameter from the first network device; Alternatively, the first terminal device acquires the n+1th resource configuration parameter according to the resource configuration list received from the first network device, where the resource configuration list includes the nth resource configuration parameter and the n+1 resource configuration parameters.
  • multiple resource configuration parameters used by the first terminal device including the nth resource configuration parameter and the n+1th resource configuration parameter can be set in the resource configuration list, and the resource configuration list can be the first terminal device's first resource configuration parameter.
  • the plurality of resource configuration parameters can be arranged according to a certain rule in the resource configuration list, so that when the number of beams with better reception quality obtained by the first terminal device through a certain resource configuration parameter is lower than a threshold value, it can be conveniently selected from the list.
  • the next resource configuration parameter is obtained in the process, which reduces the signaling interaction between the first terminal device and the first network device, and improves convenience.
  • the first terminal device may send request information to the first network device each time it needs to obtain resource configuration parameters, so that resource configuration parameters can be obtained on demand and resource waste caused by pre-configuration can be reduced.
  • the multiple terminal devices include the second terminal device.
  • a sidelink management method including: a first terminal device acquires an nth resource configuration parameter, where the nth resource configuration parameter includes an nth number threshold H n ; the first terminal The device sends a third reference signal using B n beams according to the nth resource configuration parameter; the first terminal device receives second feedback information from multiple terminal devices, and the second feedback information is used to indicate A n beams, the A n beams belong to the B n beams, and the receiving quality of the A n beams is greater than or equal to the receiving quality threshold; when the A n ⁇ H n , the first A terminal device sends first request information to a second terminal device by using an omnidirectional beam, where the first request information is used to trigger a connection with the second terminal device.
  • the first terminal device may send a third reference signal, and determine A n beams according to feedback information received by multiple terminal devices after receiving the third reference signal, and the reception quality of the A n beams is greater than that of receiving quality threshold.
  • the first terminal device can use the omnidirectional beam to perform subsequent unicast connections when A 1 ⁇ H 1 obtained by sending the reference signal for the first time; if n ⁇ 2, the first terminal device can The omnidirectional beam is used for unicast connection when A n ⁇ H n obtained by sending reference signals for n times, and when the beams whose reception quality is higher than the preset threshold obtained by sending reference signals for the first to n-1 times before are low, Get the next resource configuration parameter to try again.
  • a sidelink management method is provided, and the method is executed by a second terminal device.
  • the method includes: the second terminal device receives first request information from the first terminal device by using a plurality of second candidate beams, and the first request information is used for the first terminal device to trigger a connection with the second terminal device; The second terminal device determines a second beam according to the first request information, and the second beam is one of the plurality of second candidate beams; the second terminal device uses the second beam to The first terminal device sends first feedback information, where the first feedback information is used to feed back the first request information.
  • the second terminal device uses multiple second candidate beams to receive the first request information sent by the first terminal device in multiple directions, and measures the request information, and determines the second beam from the second candidate beams according to the measurement results . and multiplexing the second beam to send the first feedback information to the first terminal device, so that the first terminal device can determine the first beam according to the first feedback information, so that the first terminal device and the second terminal device can determine that their reception quality satisfies
  • the beam with certain conditions is used as the communication beam of the sidelink to improve the communication quality of the sidelink.
  • the first request information is sent by the first terminal device through multiple first candidate beams
  • the method further includes: the second The terminal device receives the number of the plurality of first candidate beams from the first terminal device; wherein the second terminal device receives the first request information from the first terminal device using the plurality of second candidate beams, including : The second terminal device uses the multiple second candidate beams to receive, from the first terminal device, the first request information based on the multiple first candidate beams according to the number of the multiple first candidate beams.
  • the first request information further includes indication information of the first candidate beam carrying the first request information
  • the first feedback information also includes Including indication information of a first beam, where the first beam is one of the plurality of first candidate beams.
  • the reception quality of the first request information corresponding to the second beam is greater than a second threshold.
  • the reception quality of the first request information corresponding to the second beam is one of the reception qualities of the first request information corresponding to the plurality of second candidate beams Highest.
  • the method further includes: the second terminal device receiving resource indication information from the first terminal device, where the resource indication information is used to indicate dedicated resources .
  • the method further includes: the second terminal device Using the second beam, receive from the first terminal device based on the dedicated resource a first reference signal sent based on a plurality of third candidate beams; the second terminal device sends a measurement to the first terminal device report; wherein, the measurement report is used to indicate the reception quality of the first reference signal and the corresponding third candidate beam.
  • the method before the second terminal device receives the first request information from the first terminal device using a plurality of second candidate beams, the method further includes: the The second terminal device receives third reference signals carried by Bn beams of the first terminal device, where the Bn beams are determined by the first terminal device according to nth resource configuration parameters; the first The second terminal device sends feedback information to the first terminal device, where the feedback information is used to indicate a beam whose reception quality is greater than or equal to a reception quality threshold among the B n beams, and the multiple first candidate beams include the Beams whose reception quality is greater than or equal to the reception quality threshold.
  • a sidelink management method including: a second terminal device receiving third reference signals carried by B n beams of the first terminal device, where the B n beams are the Determined by the first terminal device according to the nth resource configuration parameter; the second terminal device sends feedback information to the first terminal device, and the feedback information is used to indicate that the reception quality in the B n beams is greater than or equal to the reception quality A beam with a quality threshold; receiving first request information of a plurality of first candidate beams carried by the first terminal device, where the first request information is used to trigger a connection with the second terminal device, and the plurality of first candidate beams A candidate beam includes a beam whose reception quality is greater than or equal to a reception quality threshold.
  • a sidelink management apparatus including: a transceiver unit configured to repeatedly send first request information to a second terminal device using a plurality of first candidate beams, the first request information being used for Triggering a connection with the second terminal device; the transceiver unit is further configured to receive first feedback information from the second terminal device by using a plurality of first candidate beams, and the first feedback information is used for the performing feedback on the first request information; a processing unit, configured to determine a first beam according to the first feedback information, where the first beam is one of the plurality of first candidate beams.
  • the transceiver unit of the apparatus uses multiple first candidate beams to repeatedly send the first request information to the second terminal device, thereby triggering the connection with the second terminal device, and using the first request information to make the second terminal device
  • the second terminal device determines a beam with better reception quality, receives the first feedback information sent by the second terminal device, and the processing unit determines the first beam from the first candidate beams according to the first feedback information, so that the first terminal device and the second
  • the terminal equipment can obtain the transmitting and receiving beams with good communication quality, and improve the communication quality of the sidelink.
  • the processing unit is specifically configured to perform one of the following operations: repeatedly sending the first request information to the second terminal device by using multiple first candidate beams through HARQ Repeatedly sending the first request information to the second terminal device through PDCP using multiple first candidate beams; repeatedly sending the first request information to the second terminal device using multiple first candidate beams through the PC5-S layer.
  • the transceiving unit is further configured to: send the number of the plurality of first candidate beams to the second terminal device.
  • the first request information further includes indication information of the first candidate beam carrying the first request information
  • the first feedback information also includes Including indication information of the first beam.
  • the reception quality of the first feedback information corresponding to the first beam is greater than a first threshold.
  • the reception quality of the first feedback information corresponding to the first beam is one of the reception qualities of the first feedback information corresponding to the plurality of first candidate beams Highest.
  • the transceiving unit is further configured to: send resource indication information to the second terminal device, where the resource indication information is used to indicate dedicated resources.
  • the transceiving unit is further configured to: according to the first beam, use a plurality of third candidate beams based on the dedicated resource to send messages to the second terminal
  • the device sends a first reference signal; receives a measurement report from the second terminal device; the processing unit is further configured to determine a third beam according to the measurement report; wherein the measurement report is used to indicate the first The reception quality of a reference signal and the corresponding third candidate beam.
  • the processing unit is further configured to determine a third beam according to the measurement report, where the third beam is the plurality of third candidate beams one.
  • the processing unit is further configured to: acquire the plurality of first candidate beams.
  • the processing unit is specifically configured to: acquire an nth resource configuration parameter, where the nth resource configuration parameter includes an nth number threshold value H n , n is a positive integer; according to the nth resource configuration parameter, using B n beams to send a third reference signal; receiving second feedback information from multiple terminal devices, where the second feedback information is used to indicate A n beams, The A n beams belong to the B n beams, and the reception quality of the A n beams is greater than or equal to the reception quality threshold; according to the quantitative relationship between the A n and H n , determine the plurality of first waiting Choose a beam.
  • the processing unit is specifically configured to: when the A n ⁇ H n , determine the A n beams as the plurality of first Candidate beam.
  • the processing unit is specifically configured to: when the A n ⁇ H n , determine the B n beams as the plurality of first beams Candidate beam.
  • the processing unit is specifically configured to: when the A n ⁇ H n , the first terminal device obtains the n+1th resource configuration parameter, Determine the plurality of first candidate beams according to the n+1th resource configuration parameter, the nth resource configuration parameter includes the nth period, the nth interval and the nth resource, the n+1th resource configuration parameter Including the n+1th cycle, the n+1th interval, and the n+1th resource, the nth cycle, the nth interval, and the nth resource are respectively the The sending cycle of the third reference signal, the sending interval of the third reference signal in one sending cycle, the sending resource of the third reference signal, the n+1th cycle, the n+1th interval, the The n+1th resource is respectively the sending cycle of the third reference signal configured in the n+1th resource configuration parameter, the sending interval of the third reference signal within one sending cycle, and the sending interval of the third reference signal.
  • the n+1th resource configuration parameter satisfies at least one of the following: the n+1th cycle is smaller than the nth cycle; the n+1th interval is smaller than the nth interval; the nth +1 resource is less than said nth resource.
  • the processing unit is specifically configured to: when the A n ⁇ H n , the first terminal device sends request information to the first network device, The request information is used to acquire the n+1th resource configuration parameter; receive the n+1th resource configuration parameter from the first network device; or, according to the resource configuration list received from the first network device , to obtain the n+1th resource configuration parameter, the resource configuration list is received from the first network device when the first terminal device obtains the first resource configuration parameter, and the resource configuration list includes the The n resource configuration parameter and the n+1th resource configuration parameter.
  • the multiple terminal devices include the second terminal equipment.
  • a sidelink management device including: a processing unit configured to obtain an nth resource configuration parameter, the nth resource configuration parameter including an nth number threshold H1; a transceiver unit configured to According to the nth resource configuration parameter, use B n beams to send a third reference signal; the transceiver unit is further configured to receive second feedback information from the plurality of terminal devices, and the second feedback information is used for Indicate A n beams, the A n beams belong to the B n beams, and the reception quality of the A n beams is greater than or equal to the reception quality threshold; the transceiver unit is also used for when the A 1 ⁇ When H 1 , the first terminal device sends first request information to the second terminal device using an omnidirectional beam, the first request information is used to trigger a connection with the second terminal device, and the second terminal device belong to the plurality of terminal devices.
  • a sidelink management apparatus including: a transceiver unit configured to receive first request information from a first terminal device using a plurality of second candidate beams, the first request information being used for all The first terminal device triggers a connection with the device; a processing unit is configured to determine a second beam according to the first request information, and the second beam is one of the plurality of second candidate beams; The transceiving unit is further configured to use the second beam to send first feedback information to the first terminal device, where the first feedback information is used to feed back the first request information.
  • the transceiver unit receives the first request information from the first terminal device using multiple second candidate beams, and the processing unit determines the second beam according to the first request information.
  • the transceiver unit sends the first feedback information to the first terminal device, so that the first terminal device can also determine a beam with better reception quality according to the first feedback information, and improve the communication quality of the sidelink.
  • the first request information is sent by the first terminal device through a plurality of first candidate beams
  • the transceiver unit is further configured to: from the The first terminal device receives the number of the plurality of first candidate beams; wherein the receiving the first request information from the first terminal device by using the plurality of second candidate beams includes: according to the plurality of first For the number of beams to be selected, the first request information based on the multiple first beams to be selected is received from the first terminal device using multiple second beams to be selected.
  • the first request information further includes indication information of the first candidate beam carrying the first request information
  • the first feedback information also includes Including indication information of a first beam, where the first beam is one of the plurality of first candidate beams.
  • the reception quality of the first request information corresponding to the second beam is greater than a second threshold.
  • the reception quality of the first request information corresponding to the second beam is one of the reception qualities of the first request information corresponding to the plurality of second candidate beams Highest.
  • the transceiving unit is further configured to: receive resource indication information from the first terminal device, where the resource indication information is used to indicate dedicated resources.
  • the transceiver unit of the apparatus is further configured to: according to the dedicated resource, use the second beam to receive from the first terminal device based on multiple first The first reference signal sent by the three candidate beams; sending a measurement report to the first terminal device; wherein the measurement report is used to indicate the reception quality of the first reference signal and the corresponding third candidate beam.
  • the transceiving unit is further configured to: receive third reference signals carried by B n beams of the first terminal device, and the B n beams The beam is determined by the first terminal device according to the nth resource configuration parameter; sending feedback information to the first terminal device, where the feedback information is used to indicate the Among the B n beams, the beams whose reception quality is greater than or equal to the reception quality threshold, the plurality of first candidate beams include the beams whose reception quality is greater than or equal to the reception quality threshold.
  • a sidelink management apparatus including: a transceiver unit configured to receive third reference signals carried by B n beams of the first terminal device, where the B n beams are all determined by the first terminal device according to the nth resource configuration parameter; sending feedback information to the first terminal device, where the feedback information is used to indicate a beam whose reception quality is greater than or equal to a reception quality threshold among the B n beams; receiving first request information of multiple first candidate beams carried by the first terminal device, where the first request information is used to trigger a connection with the second terminal device, and the multiple first candidate beams include The beams whose reception quality is greater than or equal to a reception quality threshold.
  • a communication device including: a processor and a communication interface, the communication interface is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the communication device to the processor.
  • the signal of the processor is sent to other communication devices other than the communication device, and the processor is used to implement the first aspect or any implementation method of the first aspect, the second aspect, or the second aspect through a logic circuit or executing code instructions.
  • a tenth aspect provides a communication system, including: the fifth aspect or any one of the implementation manners of the fifth aspect, the sixth aspect, the seventh aspect, or any one of the implementation manners of the seventh aspect, and the apparatus of the eighth aspect.
  • a chip including: a processor, configured to call and run a computer program from a memory, so that a terminal device installed with the chip executes the first aspect or any one of the implementations of the first aspect.
  • a terminal device installed with the chip executes the first aspect or any one of the implementations of the first aspect.
  • method, and/or causing the terminal device installed with the chip to execute the method of the second aspect, and/or causing the terminal device installed with the chip to execute the method of the third aspect or any implementation manner of the third aspect, and /or make the terminal device installed with the chip execute the method of the fourth aspect including: a processor, configured to call and run a computer program from a memory, so that a terminal device installed with the chip executes the first aspect or any one of the implementations of the first aspect.
  • a computer-readable storage medium is provided.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program runs, the computer executes any one of the first aspect or the first aspect. or make the computer execute the method of the second aspect; or make the computer execute the method of the third aspect or any one of the third aspect; or make the computer execute the method of the second or fourth aspect method.
  • a thirteenth aspect provides a computer program product, the computer program product including: computer program code, when the computer program code is executed, implement the first aspect or the method of any one of the first aspect, Or the method for realizing the second aspect, or the method for realizing the second aspect or any implementation manner of the second aspect, or the method for realizing the second aspect.
  • Fig. 1 is a schematic architecture diagram of a communication system applicable to an embodiment of the present application.
  • Figure 2 is a schematic diagram of the protocol stack of the sidelink control plane based on the NR PC5 interface.
  • Fig. 3 is a schematic flowchart of a sidelink management method provided by an embodiment of the present application.
  • Fig. 4 is a schematic flowchart of a sidelink management method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a dedicated resource configuration provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another dedicated resource configuration provided by the embodiment of the present application.
  • Fig. 6 is a schematic flowchart of a measurement link management method provided by an embodiment of the present application.
  • Fig. 7 is a schematic flowchart of a sidelink management method provided by an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a sidelink management device provided by an embodiment of the present application.
  • Fig. 9 is a schematic block diagram of another sidelink management device provided by an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, for example: global system of mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE Time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new radio (new radio, NR), etc., vehicle to other equipment (vehicle to X, V2X), where V2X can include vehicle to Internet (vehicle to network, V2N), vehicle to vehicle (vehicle to Vehicle, V2V
  • the broadcast and multicast of the sidelink refer to the broadcast or multicast data sent by one terminal device, which can be received by one or more terminal devices.
  • the Destination Layer-2 ID (Destination Layer-2 ID) used when business data is transmitted on the PC5 interface is predefined.
  • the sending device When the sending device has the broadcast service data to send, it can send it directly through the user plane protocol stack, and fill the broadcast service at the media access control (media access control protocol, MAC) layer and/or physical layer (physical, PHY) layer The corresponding Destination Layer-2 ID.
  • the terminal equipment interested in the broadcast service can monitor whether there is service data of the Destination Layer-2 ID corresponding to the broadcast service at the PHY layer, and receive and analyze it, but the application is not limited thereto.
  • Unicast is a one-to-one communication method for terminal devices.
  • the sending device indicates the receiving device of the unicast data it sends through the destination address, and the receiving device determines whether the unicast data is sent to itself according to the destination address of the unicast data. data, and determine which device sends the unicast data according to the source address of the unicast data.
  • two terminal devices may establish a unicast connection between the two devices through signaling interaction, and unicast communication may be performed after the unicast connection is established.
  • the sidelink mode1 refers to that the terminal device determines resources for sending sidelink data according to a sidelink scheduling grant (sidelink grant) sent by the network device.
  • the sidelink scheduling grant is used to authorize resources dedicated to the terminal device for sending sidelink data. For example, the terminal device reports the cache status report to the network device before sending the sidelink buffer status reports (BSR) to notify the network device of the amount of data to be sent, and the network device authorizes corresponding resources for it according to the amount of data reported by the terminal device.
  • BSR sidelink buffer status reports
  • Sidelink mode2 means that network devices pre-allocate sidelink resources for competition. Multiple terminal devices can compete for resources in the sidelink resources for competition. The device can send data of the sidelink on the obtained resources. For example, the terminal device selects unoccupied resources for transmission according to measuring whether each time-frequency resource in the resources used for the sidelink is occupied, but the present application is not limited thereto.
  • Fig. 1 is a schematic architecture diagram of a communication system applicable to an embodiment of the present application.
  • the communication system includes terminal equipment and network equipment.
  • the terminal device communicates with the network device through an uplink or a downlink, and there may be a sidelink between the terminal devices.
  • the communication system may include a first terminal device 110 , a second terminal device 120 , a first network device 130 and a second network device 140 .
  • the first terminal device 110 communicates with the first network device 130 through the second link
  • the second terminal device 120 communicates with the second network device 140 through the third link
  • the first terminal device 110 communicates with the second terminal device 120 communicate through the first link
  • the first link is a side link.
  • the terminal equipment in the embodiment of the present application may refer to user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or future evolutions of public land mobile networks (public land mobile network, PLMN)
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • Functional handheld devices computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or future evolutions of public land mobile networks (public land mobile network, PLMN)
  • PLMN public land mobile network
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system of mobile communication (GSM) system or a code division multiple access (CDMA)
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • the base transceiver station (BTS) in the system can also be the base station (nodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evolutionary base station) in the LTE system.
  • NB base station
  • WCDMA wideband code division multiple access
  • evolutionary base station evolved base station
  • nodeB eNB or eNodeB
  • it can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario
  • the network device can be a relay station, access point, vehicle-mounted device, wearable device, and future
  • the embodiment of the present application does not limit the network equipment in the 5G network or the network equipment in the future evolved PLMN network.
  • FIG. 1 This application only uses FIG. 1 as an example to describe the technical solution of this application. It can be understood that the first terminal device 110 and the second terminal device 120 can also be connected to a network device, so that the first terminal device and the second terminal device The device can obtain the corresponding resource configuration through the network device.
  • the connection mode of the communication system shown in FIG. 1 of the present application does not constitute a limitation to the protection scope of the present application.
  • the communication system includes the first terminal device 110, the first network device 130, the second terminal device Device 120 and second network device 140 are used as examples to illustrate the technical solution of this application.
  • the communication system may only include the first terminal device 110 and the second terminal device 120, or include more terminal devices and network devices.
  • the number of communication devices in the embodiments should not be understood as limiting the scope of application of this application.
  • the communication system shown in Fig. 1 includes two kinds of interfaces, namely Uu interface and PC5 interface.
  • the Uu interface is an interface between a terminal device and a network device, for example, the interfaces between the first terminal device 110 and the first network device 130 , and the second terminal device 120 and the second network device 140 are Uu interfaces.
  • the PC5 interface is a direct connection interface between terminal devices, for example, the communication interface between the first terminal device 110 and the second terminal device 120 is the PC5 interface.
  • FIG. 2 shows the control plane protocol stack of the sidelink communication architecture based on the NR PC5 interface.
  • the control plane protocol stack is mainly used to transmit PC5 signaling protocol layer (PC5-signal, PC5-S) signaling and SL RRC signaling.
  • PC5-signal PC5-signal
  • SL RRC signaling
  • the control plane protocol stack used to transmit PC5-S signaling is shown in (a) of Figure 2: including PHY layer, MAC layer, radio link control layer (radiolinkcontrol, RLC), PDCP layer and PC5-S layer, wherein The PHY layer is at the L1 layer, the MAC layer, RLC layer, and PDCP layer are at the L2 layer, and the PC5-S layer is at the L3 layer.
  • PHY layer is at the L1 layer
  • the MAC layer, RLC layer, and PDCP layer are at the L2 layer
  • PC5-S layer is at the L3 layer.
  • establishing a unicast connection between terminal devices includes the following steps:
  • Step 1 The first terminal device (UE1) sends DCR information to the second terminal device (UE2).
  • the DCR information carries the application layer identifier of UE1, the application layer identifier of UE2, the V2X service type that requires the establishment of an L2 link, and the establishment of the link. Road safety information, etc.
  • Step 2 UE2 sends a direct security mode command (directsecurity mode command) feedback to UE1.
  • Step 3 UE1 sends a direct security mode complete message (direct security mode complete) to UE2 to notify UE2 that the secure connection is completed.
  • Step 4 UE2 sends direct communication accept (DCA) information to UE1, the DCA information includes UE2's application layer identifier, service quality information (quality of service, QoS), IP address configuration, etc.
  • DCA direct communication accept
  • UE1 After the unicast connection is established, UE1 will send some RRC configuration signaling to establish an RRC connection with UE2 on the opposite side.
  • the control plane protocol stack used to transmit SL RRC signaling is shown in (b) of Figure 2: including the PHY layer, MAC layer, RLC layer, PDCP layer and radio resource control layer (radioresourcecontrol, RRC), where the PHY layer is in L1
  • the MAC layer, the RLC layer, and the PDCP layer are at the L2 layer, and the RRC layer is at the L3 layer.
  • the V2X application layer of UE1 will send the PC5 link identifier assigned to the unicast connection and related information to the access layer, including the L2 identifier (including the L2 identifier of UE1 and UE2) and corresponding QoS parameters to assist
  • the access layer maintains the PC5 link identifier and information related to the PC5 unicast connection.
  • the omnidirectional beam is used to send the DCR information or DCA information in step 1
  • this way of establishing the sidelink has a relatively large limitation on the distance between the two terminal devices.
  • the scope of application of the way of establishing sidelinks between terminal devices is further reduced.
  • FIG. 3 shows a schematic flowchart of a sidelink management method 300 provided by an embodiment of the present application.
  • the first terminal device repeatedly sends first request information to the second terminal device by using multiple first candidate beams, where the first request information is used to trigger a connection with the second terminal device.
  • the second terminal device receives first request information from the first terminal device by using the multiple second candidate beams, and the first request information is used for the first terminal device to trigger a connection with the second terminal device.
  • the first candidate beam may be a channel state information reference signal (channel state information reference signal, CSI-RS) beam, a synchronization signal and a physical broadcast channel block (synchronization signal and physical broadcast channel, SSB) beam, etc.
  • CSI-RS channel state information reference signal
  • SSB physical broadcast channel block
  • the beam is formed based on space division multiplexing, and the energy of the signal is concentrated in a certain direction to form a beam.
  • the beam enables the communication system to further increase space resources on the basis of time-domain resources and frequency-domain resources to support more users, and can also make the signal transmission distance longer by concentrating signals in one direction.
  • devices communicate with each other they can use their respective beams for transmission or reception.
  • a beam does not distinguish between a sending beam or a receiving beam.
  • a beam is used for sending, it can be called a sending beam, and when a beam is used for receiving, it can be called a receiving beam.
  • the first candidate beam is a beam formed by the first terminal device through beamforming, and the width of the first candidate beam may be the first width; the second candidate beam is a beam formed by the second terminal device through beamforming, for example
  • the width of the second candidate beam may be a second width.
  • the first width and the second width may be the same or different.
  • the first request information is used for the first terminal device to request to establish a sidelink connection with the second terminal device.
  • the first request information includes DCR information, the DCR information carries the identification information of the first terminal device and the identification information of the second terminal device, the identification information may be an application layer identification, and the DCR information may also carry the V2X service type required to be established And the security information for establishing a link, etc. Therefore, according to the identifier of the second terminal device carried in the DCR information, the second terminal device can confirm that the target terminal device for establishing the sidelink by the first terminal device is itself, so as to perform other subsequent operations.
  • the first terminal device may be the sending terminal device among the first terminal device and the second terminal device.
  • the first terminal device may transmit data or signaling to the second terminal device according to the existence of the data or signaling that needs to be transmitted to the second terminal device, thereby sending the second terminal device Sending the first request information triggers establishing a connection with the second terminal device.
  • repetition means that different first candidate beams are used to send the first request information including the same DCR information, that is, different space resources are used to send the first request information, and for each first candidate beam , the sending of the first request information may be periodic or aperiodic.
  • the first terminal device uses multiple first candidate beams to repeatedly send the first request information to the second terminal device, including one of the following operations:
  • the first terminal device repeatedly sends the first request information to the second terminal device using a plurality of first candidate beams through a hybrid automatic repeat request (HARQ);
  • HARQ hybrid automatic repeat request
  • the first terminal device repeatedly sends the first request information to the second terminal device using a plurality of first candidate beams through a packet data convergence protocol (PDCP);
  • PDCP packet data convergence protocol
  • the first terminal device repeatedly sends the first request information to the second terminal device by using the multiple first candidate beams through the PC5-S layer.
  • the first terminal device may use multiple first candidate beams in different directions to send the first request information in a HARQ manner, which includes the same DCR information.
  • the first request information may be sent multiple times in the manner of HARQ retransmission, and the first candidate beam in a different direction is used each time, that is, beam scanning may be implemented.
  • the first terminal device may repeatedly transmit the DCR information at the PDCP layer. That is, the DCR information is copied at the PDCP layer, and then the copied DCR information is delivered to different RLC entities for transmission, and then transmitted to the MAC layer through different logical channels.
  • the MAC layer transmits these logical channels carrying the same DCR information, it will These logical channels are mapped to the resources of different first candidate beams for transmission, so as to realize the beam scanning process of DCR information in different directions, and send the first request information including the same DCR information with the first candidate beams in different directions .
  • the first terminal device may send the first request information including the same DCR information with the first candidate beams in different directions by using the PC5-S repeatedly.
  • the PC5-S layer is generally used to provide sidelink connection management functions, such as sidelink establishment and release, security parameter control, IP address allocation, etc.
  • the DCR information is sent by the PC5-S layer, which contains the basic information of the first terminal device, and establishes a connection with the second terminal device through the access layer.
  • the PC5-S layer needs additional instructions to let the physical layer know that multiple data from the PC5-S layer The new packet has the same content, so that the physical layer can use a different first candidate beam to send the retransmission information to the second terminal device.
  • the three repeated transmission methods can all realize beam scanning.
  • the HARQ retransmission method does not need to copy the same DCR information, but only needs to repeatedly send the DCR information, which has less overhead and is easier to implement.
  • the second terminal device determines a second beam according to the first request information, where the second beam is one of multiple second candidate beams.
  • the second terminal device when the second terminal device receives the first request information by beam scanning with multiple second candidate beams, it will measure the signal used for measurement in the first request information, so as to perform the step in S320 Process for determining the second beam.
  • the first terminal device has two beams, and the beam identifiers are beam1 and beam2 respectively; the second terminal device has two beams, and the beam identifiers are beam3 and beam4 respectively, and when the second terminal device receives the first request information, It is possible to receive the first request information carried by the sending beam-the receiving beam is beam1-beam3, beam1-beam4, beam2-beam3, beam2-beam4, after measuring the receiving quality, for example, it is determined that the beam with the beam ID of beam4 is the second beam.
  • the receiving quality of the first request information corresponding to the second beam is greater than a first threshold.
  • the current beam when the second terminal device performs beam scanning to receive the first request information, when the reception quality of the currently used second candidate beam is greater than the first threshold value, the current beam may be used as the second beam.
  • the reception quality of the current beam does not meet the preset conditions, continue to receive the first request information carried by the next second candidate beam until the second candidate beam with reception quality greater than the first threshold value is obtained, and the beam is determined for the second beam.
  • the parameters used to characterize the reception quality can be L1 or L3 reference signal received power (reference signal received power, RSRP), reference signal received quality (reference signal received quality, RSRQ) of the current beam or the ratio of signal to interference plus noise (signal to interference plus noise ratio, SINR) and other parameters.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal to interference plus noise ratio
  • the second terminal device when the second terminal device performs beam scanning to receive the first request information, it may receive the first request information based on different sending and receiving beam combinations, when the first request information carried by multiple second candidate beams among them The receiving quality of the request information all satisfies the first threshold value, and one of the candidate beams may be arbitrarily selected as the second beam from the plurality of candidate beams.
  • the reception quality of the first request information corresponding to the second beam is the highest among the reception qualities of the first request information corresponding to the plurality of second candidate beams.
  • the first terminal device may send the number of the plurality of first beams to be selected to the second terminal device; correspondingly, the second terminal device receives the number of first beams to be selected from the first terminal device ;
  • the second terminal device uses a plurality of second candidate beams to receive the first request information from the first terminal device, including: the second terminal device according to the number of the plurality of first candidate beams, using The multiple second candidate beams receive first request information based on the multiple first candidate beams from the first terminal device.
  • the first request information may include sidelink control information (sidelink control information, SCI) information, and the SCI information may indicate the number of transmission beams.
  • the terminal device may traverse all sending and receiving beam combinations in less time, and select the second candidate beam with the best receiving quality or the second candidate beam whose receiving quality meets the threshold value as the second beam from all the beams.
  • the second beam may be the beam with the highest RSRP, RSRQ, and SINR of L1 or L3.
  • the second terminal device learns that there are two first candidate beams used by the first terminal device, it may use all its second candidate beams to sequentially receive the first request information carried by the two first candidate beams , after traversing all combinations of sending and receiving beams, select the second candidate beam with the best reception quality as the second beam.
  • the second terminal device can directly obtain the number of the first candidate beams according to the nature of the HARQ retransmission, thereby traversing all transmit-receive beam combinations faster, and select the receiving quality to meet the threshold value or compare the receiving quality when the receiving quality is satisfied.
  • the beam with the best reception quality is selected from the second candidate beams with the threshold value as the second beam.
  • the measurement of the receiving quality of the first request information by the second terminal device requires that the second terminal device successfully receives the first request information.
  • the second terminal device judges that the first request information has been successfully received by the following three criteria:
  • the reception quality of the first request information received by the second terminal device exceeds a preset threshold
  • the first request information received by the second terminal device is decoded successfully
  • the reception quality of the second request information received by the second terminal device does not exceed the preset threshold value, and a single decoding fails, but the second terminal device succeeds in decoding the first request information next time, and the HARQ
  • the soft merge may also judge that the first request information is successfully received, and proceed to the next step.
  • the second terminal device sends first feedback information to the first terminal device by using the second beam, where the first feedback information is used to feed back the first request information.
  • the first terminal device receives first feedback information from the second terminal device by using the multiple first candidate beams.
  • the first feedback information may include DCA information
  • the DCA information includes identification information of the second terminal device
  • the identification information may be application layer identification information
  • the DCA information may also include QoS information and IP address configuration.
  • the second terminal device multiplexes the second beam determined in S320 to send the first feedback information, where the DCA information in the first feedback information is feedback to the DCR information.
  • the second terminal device after receiving the first request information sent by the first terminal device based on all the first candidate beams, the second terminal device determines the second beam, and then uses the second beam to send the request information to the first terminal device.
  • the first feedback information after receiving the first request information sent by the first terminal device based on all the first candidate beams, the second terminal device determines the second beam, and then uses the second beam to send the request information to the first terminal device.
  • the first feedback information after receiving the first request information sent by the first terminal device based on all the first candidate beams, the second terminal device determines the second beam, and then uses the second beam to send the request information to the first terminal device.
  • the first feedback information after receiving the first request information sent by the first terminal device based on all the first candidate beams, the second terminal device determines the second beam, and then uses the second beam to send the request information to the first terminal device.
  • the first terminal device determines a first beam according to the first feedback information, where the first beam is one of multiple first candidate beams.
  • the first terminal device uses a plurality of first candidate beams to receive the first feedback information in a beam scanning manner, measures the information used for measurement in the first feedback information, and determines the first feedback information according to the reception quality.
  • a beam where the first beam is one of multiple first candidate beams.
  • the first terminal device uses beam1 and beam2 to receive the first feedback information of the second beam beam4 carried by the second terminal device, so that the first beam can be determined according to the reception quality.
  • the manner in which the first terminal device determines the first beam is similar to the manner in which the second terminal device determines the second beam in step S320. That is, in some embodiments, the reception quality of the first feedback information corresponding to the first beam is greater than the first threshold; or in other embodiments, the reception quality of the first feedback information corresponding to the first beam is a plurality of first thresholds. The receiving quality of the first feedback information corresponding to a candidate beam is the highest. For details, please refer to the determination process of the second beam, here is Concise, no more details.
  • the first request information in S310 may include indication information of the first beam to be selected that carries the first request information, and the first feedback information includes indication information of the first beam. Therefore, the first terminal device directly determines the first beam according to the indication information of the first beam in the first feedback information.
  • the SCI information in the first request information may indicate the first candidate beam used by the first terminal device to send the first request information
  • the second terminal device may select the first candidate beam corresponding to the determined second beam
  • the indication information of beam selection is included in the first feedback information and sent to the first terminal device. Therefore, the first terminal device can stop beam scanning and measurement after receiving the first feedback information in step S340, directly obtain its own optimal transmission beam direction through the first feedback information, and determine the first candidate beam as the first One beam, so as to reduce the additional scanning process and the measurement process of RSRP, RSRQ or SINR of L1 or L3 when determining the first beam, and reduce the scanning and measurement overhead of the first terminal device.
  • the second terminal device when the second terminal device receives the first request information, it may receive the first request information carried in beam1-beam3, beam1-beam4, beam2-beam3, beam2-beam4, the second terminal device While determining that the receiving beam is beam4, according to the first candidate beam indicated by the SCI information, for example, it is known that the transmitting beam corresponding to beam4 is beam1, and when the first feedback information is sent to the first terminal device, the beam1 beam can be indicated
  • the information is sent to the first terminal device, so that when the first terminal device receives the first feedback information through blind scan, it does not need to perform measurement again, that is, the beam corresponding to beam1 can be used as the first beam for subsequent operations, reducing the number of first terminal devices.
  • the measurement overhead of the device when the first terminal device receives the first feedback information through blind scan, it does not need to perform measurement again, that is, the beam corresponding to beam1 can be used as the first beam for subsequent operations, reducing the number of first terminal devices.
  • the aforementioned indication information of the first candidate beam may indicate or implicitly indicate the first candidate beam, that is, indicate the first candidate beam through the beam serial number/number/index or implicitly indicate through the resource of the first candidate beam
  • the first candidate beam may be at least one of the following: beam number, beam management resource number, side signal resource number, absolute index of the beam, relative index of the beam, logical index of the beam, corresponding
  • the first candidate beam and the second candidate beam may be channel state information reference signal CSI-RS beams, SSB beams or other beams.
  • the first terminal device and the second terminal device determine their respective first beams and second beams.
  • the first beam and the second beam may be wider beams.
  • a fine-grained beam pairing process can also be performed.
  • FIG. 4 shows a schematic flowchart of a sidelink management method provided by an embodiment of the present application.
  • the first terminal device and the second terminal device further set the coarse-grained The first beam and the second beam are beamformed into fine-grained beams, and fine-grained beam pairing is performed.
  • the first terminal device sends a first reference signal to the second terminal device by using multiple third candidate beams according to the first beam.
  • the second terminal device uses the second beam to receive, from the first terminal device, the first reference signal sent based on the plurality of third candidate beams.
  • the third candidate beam may be a beam formed by further beamforming of the first beam, for example, the width of the third candidate beam may be smaller than the width of the first beam.
  • the first reference signal may be a CSI-RS signal or an SSB signal, so the third candidate beam may be a CSI-RS or SSB beam.
  • the first terminal device sends the first reference signal to the second terminal device by using the plurality of third candidate beams.
  • the first beam is beam1, and the second beam is beam4.
  • the first terminal device uses beam1.1 and beam1.2 obtained by continuing beamforming of beam1 to send the first reference to the second terminal device.
  • the second terminal device uses the previous beam4 to receive the first reference signal carried by beam1.1 and beam1.2.
  • Step S410 is to obtain the fine-grained beam of the first terminal device, so that the second terminal device can use the previously determined second beam to receive the first reference signal
  • the first terminal device may send resource indication information to the second terminal device, and the resource indication information is used to indicate dedicated resources; correspondingly, the second terminal device receives the resource indication information from the first terminal device.
  • the resource indication information may be sent to the second terminal device through SCI information.
  • the resources may be time-frequency resources or space resources, etc., and the first terminal device may send resource indication information to the second terminal device through SCI signaling, so that the second terminal device may receive the first reference signal according to the resource indication information.
  • the dedicated resource may be a periodic resource or an aperiodic resource, which is a resource configured for sending the first reference signal.
  • the first reference signal is designed A dedicated resource is specified, that is, the resource of the first reference signal indicated by the resource indication information is a dedicated resource. That is, the reference signal is sent separately at the original sidelink resource position, that is, it is not sent together with the data of the physical sidelink shared channel (PSSCH).
  • PSSCH physical sidelink shared channel
  • the first terminal device may also acquire dedicated resources.
  • the resource allocation on the sidelink is Mode1.
  • the first terminal device sends dedicated resource request information to the first network device; the first terminal device receives information from the first Dedicated resource indication information of the network device, where the dedicated resource indication information is used to indicate the dedicated resource.
  • the first network device receives dedicated resource request information from the first terminal device, and the first network device sends dedicated resource indication information to the first terminal device.
  • the first terminal device may send dedicated resource request information to the first network device through a scheduling request (scheduling request, SR), RRC or sidelink user information (sidelink user information, SUI), and apply for a dedicated resource for the first reference signal. resource. Therefore, after receiving the request information from the first terminal device, the first network device may indicate to the first terminal device the dedicated resources of the first reference signal through downlink control information (downlink control information, DCI).
  • SR scheduling request
  • RRC radio resource control information
  • SUI sidelink user information
  • DCI downlink control information
  • the resource allocation on the side link is Mode2, and multiple links including the side link between the first terminal device and the second terminal device compete to use the preconfigured resource set.
  • the first terminal device acquires resource occupation information of other sidelinks; the first terminal device determines the dedicated resource according to the resource occupation information. Therefore, the first terminal device can demodulate the broadcast SCI information of the sidelink where other terminal devices are located to know the resources that have been occupied, so as to select the resources that have not been occupied from the pre-configured resource set as the dedicated resources for the first reference signal .
  • FIG. 5 shows two ways of configuring dedicated CSI-RS resources provided by the embodiment of the present application.
  • FIG. 5 shows a schematic diagram of a dedicated resource configuration provided by the embodiment of the present application.
  • the shaded part is for the side It can be seen that the CSI-RS signal is not sent together with the data, so as to realize convenient beam pairing.
  • a dedicated CSI-RS transmission mechanism may be designed. Multiple sidelinks share the CSI-RS channel, and the transmitting terminal device of the sidelink notifies the resource configuration of the CSI-RS signal to the opposite terminal device through the PC5-RRC signal, so that the terminal devices at both ends of the sidelink can The CSI-RS is sent and received on resources.
  • FIG. 5 is a schematic diagram of another dedicated resource configuration provided by the embodiment of the present application. It can be seen that a special CSI-RS channel is designed for the transmission of CSI-RS signals, and sidelink 1, sidelink 2 and sidelink 3 share the CSI-RS channel based on time division multiplexing, which improves the The resource utilization rate is high, and the CSI-RS signal is not sent together with the data, which realizes convenient fine-grained sidelink beam pairing.
  • the first terminal device may also send relative resource indication information to the second terminal device before sending the resource indication information
  • the relative resource indication information may include a sending time domain position and a feedback time domain position, and the sending time The domain position is used to indicate the relative sending time domain of the first reference signal, and the feedback time domain position is used to indicate the relative feedback time domain for feedback of the first reference signal.
  • the relative resource indication information may be sent by the first terminal device to the second terminal device through PC5-RRC signaling or SCI signaling.
  • the second terminal device After the second terminal device receives the sending time domain position and the feedback time domain position, it can determine the relative sending time domain of the first reference signal relative to the aforementioned resource indication information and the relative feedback time domain used to feed back the first reference signal .
  • the relative sending time domain and the relative feedback time domain of the relative resource indication information are 3 time slots and 5 time slots respectively, then the second terminal device can know that the first reference signal is
  • the resource indication information is sent in 3 time slots, so that the first reference signal is received in the corresponding time slot, and the received first reference signal is fed back in 5 time slots after the resource indication information is sent.
  • the relative resource indication information may also be sent to the second terminal device together with the foregoing resource indication information.
  • the second terminal device measures the first reference signal, and sends a measurement report to the first terminal device.
  • the first terminal device receives the measurement report from the second terminal device.
  • the measurement report is used to indicate the reception quality of the first reference signal and the corresponding third candidate beam.
  • the reception quality includes parameters such as RSRP, RSRQ, and SINR of the first reference signal L1 or L3.
  • the channel state information reference signal resource indicator (CSI-RS resource indicator, CRI) can be used to implicitly indicate the corresponding transmission beam.
  • the CRI is The resource indicated by the aforementioned resource indication information corresponds to the plurality of third candidate beams one by one.
  • the measurement report may also use a beam identifier to indicate the corresponding transmission beam.
  • the aforementioned resource indication information sent by the first terminal device to the second terminal device may also include the corresponding beam indicating the transmission beam.
  • the identifier for example, the beam identifier may be a beam index or the like.
  • the second terminal device After receiving the resource indication information, the second terminal device uses the previously determined second beam on the corresponding dedicated resource to receive the first reference signal and measure its receiving quality. Since the first terminal device has indicated the resource for sending the first reference signal in the resource indication information, the second terminal device can associate the measurement result with the corresponding sending beam.
  • the measurement results include L1 or L3 RSRP, RSRQ, SINR and other parameters reflecting the reception quality.
  • the second terminal device When the above-mentioned second terminal device sends a measurement report to the first terminal device, if there is no available resource, it can request the second network device for the transmission resource of the measurement report or demodulate the SCI information of other sidelinks to obtain the transmission resource, relevant details Reference may be made to the manners of obtaining the dedicated resources of the first reference signal in Mode1 and Mode2 above, which will not be repeated here.
  • the first terminal device determines a third beam according to the measurement report.
  • the third beam is one of the plurality of third candidate beams, and the first terminal device may use the third candidate beam corresponding to the first reference signal whose reception quality meets a preset condition as the third beam according to the measurement report, for example,
  • the beam whose receiving quality meets the threshold value may be used as the third beam, or the sending beam with the best receiving quality may be used as the third beam.
  • the manner of determining the first beam or the second beam refer to the manner of determining the first beam or the second beam.
  • the first terminal device sends the second reference signal to the second terminal device by using the third beam.
  • the second terminal device uses multiple fourth candidate beams to receive the second reference signal.
  • the first terminal device sends the second reference signal using a third beam, the third beam being the preferred fine-grained transmission beam determined by the first terminal device, after the first terminal device determines its own preferred fine-grained transmission beam , may use the third beam to send the second reference signal to the second terminal device, so that the second terminal device uses a plurality of fourth candidate beams to receive the second reference signal from the first terminal device.
  • the fourth candidate beam is a fine-grained beam formed by further beamforming of the second beam, and the width of the fourth candidate beam may be smaller than that of the second beam.
  • the first terminal device may also send resource indication information to the second terminal device, indicating the resources used to send the second reference signal
  • the first type of terminal device may also send the relative resource indication information to the second terminal device before sending the resource indication information.
  • the indication information is used to indicate the sending time domain position of the second reference signal relative to the resource indication information and the feedback time domain position used for feedback.
  • details about resources of the second reference signal reference may be made to details about resources of the first reference signal, which are here for brevity and will not be repeated here.
  • the second terminal device measures the second reference signal, and determines a fourth beam.
  • the fourth beam is one of the fourth candidate beams
  • the process of determining the fourth beam by the second terminal device may be based on whether the receiving quality of the current fourth candidate beam is greater than a preset threshold value or by traversing all the third beams -
  • the fourth candidate beam combination selects the beam with the highest reception quality as the fourth beam, which is determined according to parameters such as RSRP, RSRQ, and SINR of L1 or L3.
  • the present application introduces a process in which the first terminal device first determines the third beam, and then the second terminal device determines the fourth beam.
  • the second terminal device may also first determine the fourth beam, and then the first terminal device determines the third beam.
  • Step 1 The first terminal device sends a first reference signal to the second terminal device by using a first beam.
  • the second terminal device receives the first reference signal from the first terminal device by using the plurality of fourth candidate beams.
  • the fourth candidate beam is a beam obtained by further beamforming of the second beam, and the width of the fourth candidate beam may be smaller than the width of the second beam.
  • Step 2 the second terminal device measures the first reference signal, and determines the fourth beam.
  • the fourth beam is one of the fourth candidate beams.
  • Step 3 The first terminal device sends a second reference signal to the second terminal device by using multiple third candidate beams.
  • the second terminal device uses the fourth beam to receive the second reference signal.
  • the third candidate beam is a beam obtained by further beamforming of the first beam, and the width of the third candidate beam may be smaller than that of the first beam.
  • Step 4 The second terminal device measures the second reference signal, and sends a measurement report to the first terminal device, where the measurement report indicates the reception quality of the third candidate beam and the corresponding second reference signal.
  • the first terminal device receives the measurement report from the second terminal device.
  • Step 5 the first terminal device determines the third beam according to the measurement report.
  • the third beam is one of the third candidate beams.
  • the first terminal device and the second terminal device establish a unicast connection.
  • the communication quality of the third beam and the fourth beam used for communication by the first terminal device and the second terminal device is lower than a preset threshold, that is, a beam failure occurs.
  • the first terminal device determines that a beam failure has occurred according to the feedback information from the second terminal device, and the feedback information may include: feedback of a nonacknowledgment (NACK) for communication between the third beam and the fourth beam, feedback for the third beam and the fourth beam At least one of the feedback of the number of discontinuous transmissions of the fourth beam communication, the feedback of the measurement information for the third beam and the fourth beam communication, the measurement information can be L1 or L3 RSRP, RSRQ, SINR and other parameters reflecting communication quality .
  • NACK nonacknowledgment
  • the first terminal device may activate the resources of the candidate beams used for beam restoration, so as to perform the process of beam restoration.
  • the first terminal device may activate the resource of the candidate beam for beam recovery by sending configuration information indicating the resource of the candidate beam to the second terminal device, and the resource of the candidate beam is activated, so that the first The terminal device and the second terminal device can use the resource to perform beam restoration.
  • the first terminal device sends to the second terminal device configuration information indicating the resource of the candidate beam to activate the resource of the candidate beam used for beam recovery before determining that the beam fails, and the resource of the candidate beam is deactivated Yes, after determining that the beam fails, activate the resource of the candidate beam, and send the candidate beam activation indication information to the second terminal device to indicate that the resource of the candidate beam has been activated, so that the second terminal device can receive the activation of the candidate beam by the first terminal device
  • the reference information sent when the resource is used, and the beam used for recovery is determined according to the measurement result of the reception quality.
  • the beam failure is determined by the second terminal device.
  • the second terminal device may directly determine that the beam failure occurs according to the receiving status of the reference signal or data. For specific indicators, refer to the scenario where the beam failure is determined by the first terminal device.
  • the second terminal device may send beam recovery request information to the first terminal device, and before the second terminal device determines that the beam fails, it may have received the resource configuration indicating the candidate beam sent by the first terminal device
  • the information activates the resource of the candidate beam for beam recovery, and the resource of the candidate beam is deactivated. Therefore, after the second terminal device determines that a beam failure has occurred, it can notify the first terminal device of the beam failure through the beam recovery request information, and the first terminal device can activate the preconfigured resource of the candidate beam, and notify the first terminal device through the candidate beam activation indication information
  • the resources of the candidate beams of the two terminal devices have been activated.
  • the second terminal device may receive the reference information sent when the first terminal device activates the resource of the candidate beam, and determine the beam used for recovery according to the measurement result of the reception quality.
  • Fig. 6 shows a schematic flowchart of another beam management method provided by the embodiment of the present application. As shown in Fig. 6, the method includes:
  • the first terminal device sends a third reference signal by using multiple beams.
  • multiple terminal devices use multiple beams to receive the third reference signal.
  • the first network device Before S510, the first network device will send resource configuration information to the first terminal device, the resource configuration information includes a first resource configuration parameter, the first resource configuration parameter may include a first quantity threshold, and may also include a first period, first resource, or first interval.
  • the first period is used to indicate the sending period of the third reference signal
  • the first interval is used to indicate the sending interval of the third reference signal in the same sending period.
  • the first resource is used to indicate the sending resource of the third reference signal
  • the first number threshold H 1 is used to indicate the number threshold of available beams.
  • the third reference signal sent The sending cycle refers to the sending cycle of the third reference signal
  • the sending interval of the third reference signal refers to the sending interval between the third reference signals in one sending cycle
  • each third reference signal passes through the third reference signal in one sending cycle.
  • One transmit beam of one terminal device is carried.
  • the resource configuration information may also include an identifier of the first terminal device.
  • the resource configuration parameter may be RRC configuration, system information block (SIB) configuration or pre-configuration information.
  • the multiple beams in S510 may be all the beams of the first terminal device, or may be some of the beams in all the beams.
  • the part of beams may be beams within a certain angle range among all beams obtained through beamforming; another example, the part of beams may be beams with better reception quality among all beams formed by beamforming determined through measurement.
  • the number of the plurality of beams may be B1 , and B1 may be determined according to factors such as the first resource configured by the network device. For example, when the first resource is large, the first terminal device may use beamforming More beams are formed; when the first resource is less, the number of beams formed by the beamforming of the first terminal device is also less.
  • the third reference signal may be an SSB signal, and the first terminal device may send the third reference signal periodically, and may send the third reference signal according to the first cycle in the first resource configuration parameter, and use the first resource to send the third reference signal
  • the third reference signal that is, the third reference signal may be sent periodically.
  • the multiple terminal devices may include the second terminal device, or may not include the second terminal device.
  • Other terminal devices around the first terminal device may perform periodic scanning, so as to receive the third reference signal.
  • Multiple terminal devices send second feedback information to the first terminal device.
  • Any one of the multiple terminal devices may receive the third reference signal in a beam scanning manner by using multiple beams obtained by beamforming.
  • the first terminal device uses multiple beams to send the third reference signal, it can also send the beam indication information of the beam carrying the third reference signal, and any one of the multiple terminal devices can obtain the information corresponding to the third reference signal according to a certain mapping rule.
  • the mapping rule may be pre-agreed or pre-configured with the network device.
  • Multiple terminal devices may measure the third reference signal to determine reception quality of the third reference signal carried by different beams of the first terminal device, and the reception quality may include L1 or L3 RSRP, RSRQ, SINR, etc.
  • each of the multiple terminal devices may feed back beams with reception quality higher than a preset threshold (reception quality threshold) to the first terminal device. In other embodiments, each of the multiple terminal devices may feed back the beam with the highest reception quality to the first terminal device.
  • the first terminal device obtains beam 1 (beam1), beam 2 (beam2), and beam 3 (beam3) through beamforming, and one of the multiple terminal devices obtains beam 4 (beam4) through beamforming , beam 5 (beam5).
  • the terminal device may measure the receiving quality of the third reference signal based on beam1-beam4, beam1-beam5, beam2-beam4, beam2-beam5, beam3-beam4, and beam3-beam5 respectively.
  • the terminal device may feed back beam 1 and beam 3 to the first terminal device; or the terminal device may only feed back beam 1 to the first terminal device.
  • the terminal device When the terminal device feeds back to the first terminal device, it may feed back the corresponding beam to the first terminal device in an explicit manner, or feed back the corresponding beam to the first terminal device in an implicit manner.
  • Feedback through display means directly feeding back beam ID, beam index, beam receiving resource, etc. in the feedback information; feeding back the corresponding beam in an implicit way means implicitly indicating the corresponding transmission beam through the feedback resource position, exemplary , the transmission time slots of the third reference signal carried by beam 1, beam 2, and beam 3 are respectively time slot 1, time slot 2, and time slot 3, and the corresponding default feedback time slots are time slot 4, time slot 5, and time slot 3.
  • time slot 6 if the terminal device needs to feed back beam 1 and beam 2, it can send feedback information in time slot 4 and time slot 5 respectively.
  • any terminal device among the plurality of terminal devices will send the first terminal device
  • the terminal device feeds back at least one beam, and these feedbacks indicate the A 1 beams of the first terminal device, which means that each of the A 1 beams determined by the first terminal device according to the feedback information corresponds to at least one terminal device (multiple terminal devices a terminal device in the ).
  • the second feedback information can be understood as a collection of feedback information sent by multiple terminal devices, that is, each of the multiple terminal devices will send feedback information to the first terminal device, so that the first terminal device The terminal device performs subsequent operations to determine multiple first candidate beams according to the second feedback information formed by these feedback information sets.
  • the first terminal device determines a first candidate beam according to the quantitative relationship between A 1 and H 1 .
  • the first terminal device may determine A1 available beams according to feedback information sent by multiple terminal devices. There may be situations where two or more terminal devices feed back the same beam.
  • the first terminal device may compare A 1 with the first quantity threshold H 1 , and determine a beam for subsequent sending of DCR information according to the comparison result. Specifically, the physical layer or the MAC layer of the first terminal device performs corresponding operations according to the quantitative relationship between A 1 and H 1 .
  • the H 1 may be a value smaller than B 1 determined by the first network device based on at least one of the first resource (the number B 1 of multiple beams affecting the first terminal device), the first cycle and other factors.
  • the first terminal device may use A 1 available beams as the multiple first candidate beams mentioned above.
  • the judging process may be implemented by the physical layer or the MAC layer of the first terminal device. If implemented by the physical layer, the physical layer will report the indication information of the number A 1 or A 1 beams to the MAC layer after determining A 1 ⁇ H 1 , so that the MAC layer can determine the number of retransmissions of the first request information (HARQ retransmission), or the MAC layer indicates the number of first candidate beams to the high layer, and the high layer can repeat or retransmit the first request information (DCR information) for a corresponding number of times (PDCP repetition or PC5- S retransmission). Perform the following operations to complete the unicast connection between the first terminal device and the second terminal device, and further perform fine-grained beam pairing:
  • the first terminal device repeatedly sends the first request information to the second terminal device by using the first beam to be selected.
  • the second terminal device uses multiple second candidate beams to receive the first request information from the first terminal device.
  • the first request information includes DCR information
  • the first terminal device triggers a connection with the second terminal device through the DCR information.
  • the first request information is sent by the first terminal device based on the first candidate beams in different directions by using HARQ retransmission, PDCP repetition or PC5-S retransmission to form a beam scan.
  • the second terminal device measures the first request information to determine a second beam.
  • the second beam may be a beam with the highest receiving quality or a beam whose receiving quality satisfies the first threshold among the second candidate beams.
  • the second terminal device sends the first feedback information to the first terminal device by using the second beam.
  • the first terminal device uses the first beam to be selected to receive the first feedback information from the first terminal device.
  • the first feedback information includes DCA information, which is feedback to DCR information.
  • the first terminal device measures the first feedback information to determine the first beam.
  • the first request information in S1 includes beam indication information of the first candidate beam
  • the first feedback information in S4 includes indication information of the first candidate beam corresponding to the second beam carrying the first request information
  • the first terminal device and the second terminal device can complete the unicast connection, and the first terminal device can also perform fine-grained beam pairing through the following steps S4-S9.
  • the first terminal device uses multiple third candidate beams to send the first parameter to the second terminal device according to the first beam. test signal.
  • the second terminal device uses the second beam to receive, from the first terminal device, the first reference signal sent based on the plurality of third candidate beams.
  • the first terminal device may send PC5-RRC information to the second terminal device, and correspondingly, the second terminal device receives the PC5-RRC information.
  • the PC5-RRC information includes the sending resource, sending period, sending interval, feedback threshold, feedback resource, etc. of the first reference signal, and may also include the ID of the second terminal device.
  • the configuration information included in the PC5-RRC information may be from RRC information or SIB information sent by the first network device, or may be pre-configuration information.
  • the first reference signal may be sent separately, that is, not sent along with the PSSCH.
  • the PC5-RRC information may include the resource location and sending period of the first reference signal.
  • the first reference signal may also be sent along with the periodic PSSCH, for example, along with the periodic padding packet, and the first terminal device may indicate the sending resource location and the feedback resource location of the first reference signal through SCI information.
  • the resource of the first reference signal may be a specially configured resource, or may be a resource selected by the first terminal device from a preconfigured resource set.
  • the second terminal device may send PC5-RRC completion information to the first terminal device, indicating that the second terminal device has successfully received the PC5-RRC information.
  • the second terminal device measures the first reference signal, and sends a measurement report to the first terminal device.
  • the first terminal device receives the measurement report from the second terminal device.
  • the first terminal device determines the third beam according to the measurement report.
  • the third beam is one of the plurality of third candidate beams, and the first terminal device may use the third candidate beam corresponding to the first reference signal whose reception quality meets a preset condition as the third beam according to the measurement report, for example,
  • the beam whose receiving quality meets the threshold value may be used as the third beam, or the sending beam with the best receiving quality may be used as the third beam.
  • the first terminal device sends the second reference signal to the second terminal device by using the third beam.
  • the second terminal device uses multiple fourth candidate beams to receive the second reference signal.
  • the second terminal device measures the second reference signal, and determines a fourth beam.
  • the second terminal device can use multiple fourth candidate beams to receive the first reference signal at S5, so that the fourth beam can be directly determined as the optimal beam according to the receiving quality, and the second terminal device can send the first reference signal to the first terminal device A measurement report, and feeds back the transmission beam ID or transmission resource and the corresponding reception quality of the first terminal device when receiving the first reference signal, and the first terminal device can determine the optimal beam according to the measurement report.
  • the first terminal device and the second terminal device may establish a beam pairing relationship based on their optimal beams.
  • the first terminal device and the second terminal device can perform any one of the following operations:
  • a second resource configuration parameter is acquired, where the second resource configuration parameter may include a second quantity threshold H 2 , and may also include a second period, a second interval, and a second resource.
  • the second cycle is smaller than the first cycle and/or the second interval is smaller than the first interval and/or the second resource is less than the first resource.
  • the second period is less than the first period or the second interval is less than the first interval
  • the first terminal device obtains available beams according to steps S510-S530, it may be possible to obtain more available beams A 2 so that A 2 ⁇ H2 .
  • the size of the first resource may be the same as that of the second resource, and the first quantity threshold and the second quantity threshold may also be the same.
  • the first resource and the second resource may be different and/or the first quantity threshold and the second quantity threshold may be different.
  • the second resource is less than the first resource
  • the first terminal device uses the second resource configuration parameter to perform beamforming, the number of beams obtained is less, so that the width of a single beam is wider and the coverage area is also larger.
  • the second number threshold may be smaller than the first number threshold, so that A 2 ⁇ H 2 may be realized.
  • the first terminal device After the first terminal device obtains the nth resource configuration parameters, it can determine A n available beams after performing operations similar to S510-S530. The size of A n and H n , if A n ⁇ H n , can follow the steps of S1-S4 above, use A n available beams as the first candidate beams to perform unicast connection with the second terminal device, optional, The fine-grained pairing can also be further performed according to steps S5-S9.
  • a n ⁇ H n can finally be realized, so that no beams at positions of other terminal devices are eliminated through the feedback information of the terminal devices around the first terminal device. This prevents the first terminal device from directly using all the beams obtained by beamforming to send DCR information, prolonging the unicast connection process, and reserving a certain number of beams to facilitate acquisition of appropriate beams during unicast connection.
  • the first terminal device may obtain the next resource configuration parameter in two ways.
  • the first terminal device may send request information to the first network device each time the resource configuration parameter is obtained, so that the first network device may send the resource configuration to the first terminal device when receiving the request information parameters, and the resource configuration parameters sent by the network device this time need to meet certain conditions.
  • the m-th cycle when obtaining the m-th resource configuration parameter is less than the m-1th cycle, and/or the m-th interval is smaller than the m-1-th interval, and/or the m-th resource is less than the m-1-th resource (the m-th
  • the 1st period, the m-1th interval, and the m-1th interval are respectively the transmission period of the third reference signal indicated in the m-1th resource configuration parameter, the interval of the third reference signal in the same transmission period, and the third reference signal
  • the transmission resource of the mth period, the mth interval, and the mth interval are respectively the transmission period of the third reference signal indicated in the mth resource configuration parameter, the transmission interval of the third reference signal in the same transmission period, and the third reference signal sending resources), so that configuration at any time and use at any time reduces the waste caused by pre-configured resources.
  • the first terminal device needs to be in the RRC connection state when sending the request to the first network device, and the first terminal device may request
  • the first network device when the first network device sends the resource configuration information to the first terminal device, the first resource configuration parameter, the second resource configuration parameter...the nth resource configuration parameter are all sent through the resource configuration list, the The resource configuration list is sent to the first terminal device before the first terminal device sends the third reference signal for the first time.
  • the first resource configuration parameter, the second resource configuration parameter...the nth resource configuration parameter are arranged according to a certain rule in the resource configuration list, for example, arranged in sequence or reverse order.
  • the first terminal device directly obtains the m-th resource configuration parameter from the resource configuration list , thereby reducing signaling interaction between the first terminal device and the first network device.
  • the first network device since the first network device sends all pre-configured resource configuration parameters to the first terminal device in the form of a resource configuration list at one time through the resource configuration information, the first terminal device does not need to be in the RRC connection state, and can also be in the RRC connection state. Unconnected or located in an area not covered by the wireless access network. If the first terminal device is in the RRC disconnected state, the resource configuration information The information can be configured through a system information block (SIB). If the first terminal device is in an area without wireless network connection, the resource configuration list may be pre-configured.
  • SIB system information block
  • the first terminal device uses the omnidirectional beam as the first candidate beam.
  • the omnidirectional beam is not a beam obtained by beamforming, but has no directionality, or a beam pointing to all directions in space.
  • the first terminal device can follow The following steps S11-S12 perform a unicast connection with the second terminal device. Optionally, follow S13-S16 to perform fine-grained beam pairing.
  • the first terminal device sends the first request information to the second terminal device by using an omnidirectional beam.
  • the second terminal device uses the omnidirectional beam to receive the first request information from the first terminal device.
  • the first request information includes DCR information
  • the first terminal device triggers a connection with the second terminal device through the DCR information.
  • the second terminal device sends the first feedback information to the first terminal device by using the omnidirectional beam.
  • the first terminal device uses the omnidirectional beam to receive the first feedback information from the first terminal device.
  • the first feedback information includes DCA information, which is feedback to DCR information.
  • the first terminal device and the second terminal device can omnidirectionally send or receive DCR information and DCA information on FR1 (frequency rang) or FR2, thereby establishing a unicast connection.
  • FR1 frequency rang
  • FR2 frequency range of FR1
  • FR1 frequency rang
  • FR2 frequency range of FR2
  • the first terminal device and the second terminal device can complete the unicast connection.
  • the first terminal device may also perform fine-grained beam pairing through the following steps S13-S16.
  • the first terminal device sends the first reference signal to the second terminal device by using multiple third candidate beams.
  • the second terminal device uses the multiple fourth candidate beams to receive from the first terminal device the first reference signal sent based on the multiple third candidate beams.
  • the first reference signal may be an SSB signal or a CSI-RS signal.
  • the first terminal device will send configuration information to the second terminal device, which can be sent through PC5-RRC information, and the configuration information can include the transmission resource of the first reference signal, the transmission cycle, the feedback resource, the second terminal device’s logo, etc.
  • the PC5-RRC information includes the sending resource, sending period, sending interval, feedback threshold (used to indicate the feedback threshold), feedback resource, etc. of the first reference signal, and may also include the ID of the second terminal device.
  • the configuration information included in the PC5-RRC information may be from RRC information or SIB information sent by the first network device, or may be pre-configuration information.
  • the first reference signal can be sent separately, that is, not sent with the PSSCH.
  • the PC5-RRC information can include CSI-RS set, resource location, transmission period, etc.
  • the first reference signal may also be sent along with the periodic PSSCH, for example, along with the periodic padding packet, and the first terminal device may indicate the sending resource location and the feedback resource location of the first reference signal through SCI information.
  • the resource of the first reference signal may be a specially configured resource, or may be a resource selected by the first terminal device from a preconfigured resource set.
  • the second terminal device may send PC5-RRC completion information to the first terminal device, indicating that the second terminal device has successfully received the PC5-RRC information.
  • the configuration resource can be sent alone or along with the PSSCH, that is, sent together with the data.
  • the second terminal device measures the first reference signal to determine a fourth beam.
  • the second terminal device may measure the first reference signal, and determine an optimal beam (fourth beam) according to the measurement result.
  • the second terminal device sends a measurement report of the first reference signal to the first terminal device.
  • the first terminal device receives the measurement report from the second terminal device.
  • the first terminal device determines the third beam according to the measurement report.
  • the third beam is one of the plurality of third candidate beams, and the first terminal device may use the third candidate beam corresponding to the first reference signal whose reception quality meets a preset condition as the third beam according to the measurement report, for example,
  • the beam whose receiving quality meets the threshold value may be used as the third beam, or the sending beam with the best receiving quality may be used as the third beam.
  • the first terminal device uses the omnidirectional beam to send DCR information to perform a unicast connection with the second terminal device. Since the omnidirectional beam covers all directions or spaces, the success rate of the unicast connection can be improved. Avoid unicast connections failing when too few beams are determined to be available.
  • the DCR information can cover all surrounding spaces.
  • Operation 3 The first terminal device uses multiple beams in S510 as the first candidate beams, and performs unicast connection with the second terminal device according to steps S1-S4. Optionally, continue to follow steps S5 -S9 for fine-grained beam pairing.
  • the first terminal device uses all the beams for sending the third reference signal to send DCR information to perform unicast connection with the second terminal device, so as to avoid failure of the unicast connection due to fewer determined available beams.
  • the process of judging A 1 ⁇ H 1 or A n ⁇ H n can be completed by the physical layer or the MAC layer, and then it is determined to use B 1 or B n beams or omnidirectional beams to send the first request information (DCR information).
  • the B1 or Bn can be reported to the MAC layer by the physical layer of the first terminal device, or the beams that send the first request information (DCR information) can be reported as B1 or Bn beams, so that
  • the MAC layer determines the number of retransmissions of the first request information (HARQ retransmission), or the MAC layer indicates the number of first beams to be selected to the upper layer, and the first request information (DCR information) can be repeated or repeated by the upper layer during subsequent unicast links.
  • the corresponding number of retransmissions (PDCP repetition or PC5-S retransmission).
  • the physical layer may report to the MAC layer that the omni-directional beam is used to send the first request information, and further, the MAC layer may also report to the upper layer to use the omni-directional beam to send the first request information.
  • operations 2 and 3 do not need to be implemented when A 1 ⁇ H 1 , for example, after the first terminal device obtains resource configuration parameters exceeding the preset threshold, it can use omnidirectional beams or multiple beams in S510 to send
  • the DCR information is unicast connected with the second terminal device.
  • the first network device and the first terminal device may agree that after the first terminal device acquires the resource configuration parameters three times, if A 3 ⁇ H 3 , then the omnidirectional beam or multiple beams in S510 may be used to send the second
  • the terminal device sends DCR information to implement a unicast link.
  • the first terminal device uses up all the resource configuration parameters in the resource configuration parameter list sent by the first network device to the first terminal device, it may directly perform operation 2 or operation 3.
  • the first terminal device determines the first candidate beam according to the first resource configuration parameter (or determines the first candidate beam according to the nth resource configuration parameter).
  • the first terminal device does not necessarily have definite steps, but directly uses A n beams or B n beams or uses omnidirectional beams to send to the second terminal device that needs to establish a link according to the judgment result.
  • the first request information establishes a unicast connection.
  • the first terminal device sends the third reference signal to obtain available beams, and compares the number of available beams with the number threshold value (the Nth number threshold value) in the resource configuration parameters to further determine the number of available beams. outside the beam used by the second terminal device for the unicast connection.
  • the first terminal device can also determine the available With beam:
  • the first terminal device uses multiple beams formed by beamforming to receive SSB signals sent by multiple terminal devices.
  • the first terminal device determines an available beam according to the receiving quality of the SSB signal.
  • the first terminal device can agree with the network device that when the number of available beams is greater than or equal to the preset threshold, the beam can be used.
  • Available beams can be used to send DCR information to perform unicast connections with the first terminal device; or the first terminal device can agree with the network device when the ratio of the number of available beams A 1 to the number of beams B 1 used to receive SSB signals is greater than or equal to a preset threshold , the available beam may be used to send DCR information to perform a unicast connection with the first terminal device.
  • the first terminal device may directly use the omnidirectional beam or all beams receiving SSB signals to send DCR information to the second terminal device for unicast connection.
  • FIG. 7 shows a schematic flowchart of a beam management method provided by an embodiment of the present application, which is used to implement the technical solutions in FIG. 3 and FIG. 4 .
  • the first terminal device repeatedly sends the first request information to the second terminal device by using multiple first candidate beams.
  • the second terminal device uses multiple second candidate beams to receive the first request information from the first terminal device.
  • the first request information includes DCR information
  • the first terminal device triggers a connection with the second terminal device through the DCR information.
  • the first request information is sent by the first terminal device based on the first candidate beams in different directions by using HARQ retransmission, PDCP repetition or PC5-S retransmission to form a beam scan.
  • the first terminal device may obtain the multiple beams to be selected through S510-S530 in FIG. 6 .
  • S510-S530 the multiple beams to be selected through S510-S530 in FIG. 6 .
  • the omnidirectional beam is used as the beam used for the subsequent unicast connection
  • S602 becomes: the first terminal device sends the first request information to the second terminal device using the omnidirectional beam .
  • steps S603 and S608 are correspondingly removed.
  • steps S610-S624 the first terminal device performs fine-grained beam pairing not on the basis of the first beam but on the basis of the omnidirectional beam, which will not be repeated here.
  • the first terminal device sends the number of first beams to be selected to the second terminal device.
  • the second terminal device receives the number of the first beam to be selected from the first terminal device.
  • the second terminal device measures the first request information to determine a second beam.
  • the second beam may be a beam with the highest receiving quality or a beam whose receiving quality satisfies the first threshold among the second candidate beams.
  • the second terminal device sends the first feedback information to the first terminal device by using the second beam.
  • the first terminal device uses the multiple first candidate beams to receive the first feedback information from the first terminal device.
  • the first feedback information includes DCA information, which is feedback to the DCR information.
  • the first terminal device measures the first feedback information to determine the first beam.
  • the first request information in S602 includes beam indication information of the first candidate beam
  • the first feedback information in S606 includes indication information of the first candidate beam corresponding to the second beam carrying the first request information
  • the first network device sends the resource configuration parameter to the first terminal device.
  • the resource configuration parameters may include relative transmission time domain positions and feedback time domain positions of multiple CSI-RS reference signals relative to resource indication information.
  • the resource configuration parameter may be sent based on a request from the first terminal device.
  • the first terminal device acquires time-frequency or space resources for multiple CSI-RS reference signals from the first network device or by demodulating SCI information of other sidelinks.
  • the first terminal device sends relative resource indication information to the second terminal device, including sending time domain positions and feedback time domain positions of multiple CSI-RS reference signals.
  • the first terminal device sends resource indication information to the second terminal device, indicating time-frequency or space resources for receiving multiple CSI-RS reference signals.
  • the first terminal device sends multiple CSI-RS reference signals to the second terminal device by using multiple third candidate beams.
  • the second terminal device receives multiple CSI-RS reference signals at the sending time domain position after the resource indication information according to the relative resource indication information.
  • the second terminal device sends a CSI-RS measurement report to the first terminal device.
  • the first terminal device receives the CSI-RS measurement report.
  • the measurement includes beam indication information for indicating the third candidate beam and corresponding reception quality.
  • the first terminal device determines a third beam from the third candidate beams according to the CSI-RS measurement report.
  • the first terminal device sends the CSI-RS signal to the second terminal device by using the third beam.
  • the second terminal device uses multiple fourth candidate beams to receive the CSI-RS signal.
  • the second terminal device determines a fourth beam from multiple fourth candidate beams according to the reception quality.
  • Fig. 8 shows a schematic block diagram of a sidelink management device provided by an embodiment of the present application.
  • the apparatus includes: a transceiver unit 710, configured to repeatedly send first request information to a second terminal device using a plurality of first candidate beams, and the first request information is used to trigger communication with the second Connection of a terminal device; the transceiving unit 710 is further configured to use a plurality of first candidate beams to receive first feedback information from the second terminal device, and the first feedback information is used to respond to the first request information performing feedback; a processing unit 720, configured to determine a first beam according to the first feedback information, where the first beam is one of the plurality of first candidate beams.
  • the transceiver unit 710 of the device uses multiple first candidate beams in different directions to repeatedly send the first request information to the second terminal device, thereby triggering the connection with the second terminal device, and through the first The request information enables the second terminal device to determine a beam with better reception quality, receives the first feedback information sent by the second terminal device, and the processing unit 720 determines the first beam from the first candidate beams according to the first feedback information, so that the first The terminal device and the second terminal device can obtain transceiving beams with good communication quality, and improve the communication quality of the sidelink.
  • the processing unit 720 is specifically configured to perform one of the following operations: using multiple first candidate beams through HARQ to repeatedly send the first request information to the second terminal device; using multiple first candidate beams through PDCP Repeatedly sending the first request information to the second terminal device; repeatedly sending the first request information to the second terminal device by using multiple first candidate beams through the PC5-S layer.
  • the transceiving unit 710 is further configured to: send the numbers of the multiple first candidate beams to the second terminal device.
  • the first request information further includes indication information of the first beam to be selected that carries the first request information
  • the first feedback information further includes indication information of the first beam.
  • the receiving quality of the first feedback information corresponding to the first beam is greater than a first threshold.
  • the receiving quality of the first feedback information corresponding to the first beam is the same as that corresponding to the plurality of first candidate beams
  • the reception quality of the first feedback information is the highest.
  • the transceiving unit 710 is further configured to: send resource indication information to the second terminal device, where the resource indication information is used to indicate a dedicated resource of the first reference signal.
  • the transceiving unit 710 is further configured to: according to the first beam, use multiple third candidate beams based on the dedicated resource to send a first reference signal to the second terminal device; A measurement report of the second terminal device; wherein, the measurement report is used to indicate the reception quality of the first reference signal and the corresponding third candidate beam.
  • the processing unit 720 is further configured to determine a third beam according to the measurement report, where the third beam is one of the plurality of third candidate beams.
  • the transceiving unit 720 is further configured to: acquire the multiple first candidate beams.
  • the transceiver unit 720 is specifically configured to: acquire an nth resource configuration parameter, the nth resource configuration parameter includes an nth number threshold H n , where n is a positive integer; according to the nth resource configuration parameter, using B n beams to send a third reference signal; receiving second feedback information from a plurality of terminal devices, the second feedback information being used to indicate A n beams, the A n beams belonging to the B n beams, the reception quality of the A n beams is greater than or equal to the reception quality threshold; according to the quantitative relationship between the A n and H n , determine the plurality of first candidate beams.
  • the transceiving unit 720 is specifically configured to: when the A n ⁇ H n , determine the A n beams as the plurality of first candidate beams.
  • the transceiving unit 720 is specifically configured to: when the A n ⁇ H n , determine the B n beams as the plurality of first candidate beams.
  • the transceiving unit 720 is specifically configured to: when the A n ⁇ H n , the first terminal device acquires the n+1th resource configuration parameter, and determines according to the n+1th resource configuration parameter For the plurality of first candidate beams, the nth resource configuration parameter includes the nth cycle and/or the nth resource, and the n+1th resource configuration parameter includes the n+1th cycle and/or the n+1th cycle resource, the configuration parameter of the n+1th resource satisfies at least one of the following: the n+1th period is smaller than the nth period; the n+1th resource is less than the nth resource.
  • the acquiring the n+1th resource configuration parameter by the first terminal device includes: when the A n ⁇ H n , the first terminal device sends request information to the first network device, and the request The information is used to obtain the n+1th resource configuration parameter; or, the first terminal device obtains the n+1th resource configuration parameter according to a resource configuration list, and the resource configuration list is the resource configuration list of the first terminal device Received from the first network device when acquiring the first resource configuration parameter, the resource configuration list includes the nth resource configuration parameter and the n+1th resource configuration parameter.
  • the multiple terminal devices include the second terminal device.
  • the apparatus includes: a transceiving unit 710, configured to receive first request information from a first terminal device using a plurality of second candidate beams, and the first request information is used to communicate with the first terminal The device is connected; the processing unit 720 is configured to determine a second beam according to the first request information, and the second beam is one of the plurality of second candidate beams; the transceiver unit 710 is also configured to Sending first feedback information to the first terminal device by using the second beam, where the first feedback information is used to feed back the first request information.
  • the transceiver unit 710 receives the first request information from the first terminal device by using multiple second candidate beams, and the processing unit 720 measures the first request information according to the first request information, so as to determine the second beam.
  • the transceiver unit 710 sends the first feedback information to the first terminal device, so that the first terminal device can also determine a beam with better reception quality according to the first feedback information, and improve the communication quality of the sidelink.
  • the first request information is sent by the first terminal device through multiple first candidate beams
  • the The transceiver unit 710 is further configured to: receive the number of the plurality of first candidate beams from the first terminal device; wherein, the receiving the first request information from the first terminal device by using the plurality of second candidate beams,
  • the method includes: according to the number of the multiple first beams to be selected, using multiple second beams to be selected from the first terminal device to receive first request information based on the multiple first beams to be selected.
  • the first request information further includes indication information of the first beam to be selected that carries the first request information
  • the first feedback information further includes indication information of the first beam
  • the first The beam is one of the plurality of first candidate beams.
  • the receiving quality of the first request information corresponding to the second beam is greater than a second threshold.
  • the reception quality of the first request information corresponding to the second beam is the highest among the reception qualities of the first request information corresponding to the plurality of second candidate beams.
  • the transceiving unit 710 is further configured to: receive resource indication information from the first terminal device, where the resource indication information is used to indicate dedicated resources.
  • the device transceiving unit 710 is further configured to: according to the dedicated resource, use the second beam to receive, from the first terminal device, a first reference signal sent based on multiple third candidate beams; sending a measurement report to the first terminal device; wherein the measurement report is used to indicate the reception quality of the first reference signal and the corresponding third beam to be selected.
  • the transceiving unit 710 is further configured to: receive the third reference signal carried by the B n beams of the first terminal device, the B n beams are the first terminal device according to the nth Determined by resource configuration parameters; sending feedback information to the first terminal device, where the feedback information is used to indicate a beam whose reception quality is greater than or equal to a reception quality threshold among the B n beams, and the plurality of first candidate
  • the beams include beams whose reception quality is greater than or equal to a reception quality threshold.
  • Fig. 9 shows a schematic block diagram of an apparatus provided by an embodiment of the present application.
  • the apparatus 800 shown in FIG. 9 may correspond to the apparatus described above. Specifically, the apparatus 800 may be a specific example of the first terminal device or the second terminal device in FIG. 1 .
  • the device 800 includes: a processor 820 .
  • the processor 820 is used to implement corresponding control and management operations, for example, the processor 820 is used to support the device to execute the methods shown in FIG. 3 , FIG. 4 , FIG. 5 , and FIG. 6 in the foregoing embodiments. or operation or function.
  • the apparatus 800 may further include: a memory 810 and a communication interface 830 ; the processor 820 , the communication interface 830 , and the memory 810 may be connected to each other or through a bus 840 .
  • the communication interface 830 is used to support the device to communicate, and the memory 810 is used to store program codes and data of the device.
  • the processor 820 invokes codes or data stored in the memory 810 to implement corresponding operations.
  • the memory 810 may or may not be coupled with the processor.
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 820 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • Communication interface 830 may be a transceiver, circuit, bus, module, or other type of communication interface.
  • the bus 840 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus or the like.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 9 , but it does not mean that there is only one bus or one type of bus.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

Landscapes

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

Abstract

本申请实施例提供了一种侧行链路管理方法、装置和系统，包括：第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，第一请求信息用于触发与第二终端设备的连接；第一终端设备使用多个第一待选波束从第二终端设备接收第一反馈信息，第一反馈信息用于对第一请求信息进行反馈；第一终端设备根据第一反馈信息，确定第一波束，第一波束是多个第一待选波束之一。该侧行链路管理方法、装置和系统能够减小对终端设备之间链路建立距离的限制，提高侧行链路建立的成功率。

Description

侧行链路管理方法、装置和系统
本申请要求于2022年02月28日提交中国专利局、申请号为202210188443.2、申请名称为“侧行链路管理方法、装置和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，尤其涉及一种侧行链路管理方法、装置及系统。
背景技术
一些无线通信系统可以支持通信设备之间的之间通信，例如多个终端设备之间的通信，这种通信方式称为侧行链路通信。侧行链路通信包括但不限于设备到设备(device to device，D2D)、接近度服务(ProSe)通信、车到万物(V2X)的通信、蜂窝V2X(C-V2X)通信系统等。
两个终端设备进行单播通信之前，需要进行波束扫描并建立波束配对。现有的侧行链路系统中在进行细颗粒度波束配对之前仅使用全向波束进行单播连接，对于终端设备之间的距离有较大的限制，侧行链路建立的成功率不高。
发明内容
本申请实施例提供一种侧行链路管理方法、装置和系统,能够减小侧行链路建立过程对终端设备距离的限制，提高侧行链路建立的成功率。
第一方面，提供了一种侧行链路管理方法，该方法由第一终端设备执行。第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接；所述第一终端设备使用所述多个第一待选波束从所述第二终端设备接收第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈；所述第一终端设备根据所述第一反馈信息，确定第一波束，所述第一波束是所述多个第一待选波束之一。
第一终端设备通过向多个方向重复发送第一请求信息的方式形成波束扫描，从而第二终端设备可以根据第一请求信息的接收质量使用接收质量较好的波束发送第一反馈信息，第一终端设备根据第一反馈信息的接收情况确定第一波束，从而使得在侧行链路建立过程中，第一终端设备与第二终端设备能够使用波束扫描的方式建立连接，提高侧行链路建立的成功率和应用场景。
结合第一方面，在第一方面的某些实现方式中，所述第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，包括以下操作之一：第一终端设备通过混合自动重传请求(hybrid automatic repeat request，HARQ)使用多个第一待选波束向第二终端设备重复发送第一请求信息；第一终端设备通过分组数据汇聚协议(packet data  convergence protocol，PDCP)使用多个第一待选波束向第二终端设备重复发送第一请求信息；第一终端设备通过PC5-S层使用多个第一待选波束向第二终端设备重复发送第一请求信息。
第一终端设备在不同的波束发送方向上使用HARQ重传、PDCP重复、PC5-S重传的方式发送第一请求信息，形成波束扫描，从而第二终端设备可以根据扫描方式发送的第一请求信息，选择接收质量满足预设条件的波束作为其与第一终端设备连接使用的波束。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：所述第一终端设备向所述第二终端设备发送所述多个第一待选波束的数目。
第一终端设备向第二终端设备发送第一待选波束的数目，从而第二终端设备可以根据第二待选波束的数目接收第一请求信息，快速遍历所有的发送-接收波束组合，选择接收质量满足预设条件的波束作为与第一终端设备通信使用的波束，提高侧行链路建立后的通信质量。
结合第一方面，在第一方面的某些实现方式中，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括指示所述第一波束的指示信息。
第一终端设备在使用多个第一待选波束发送第一请求信息时，同时用第一请求信息指示承载该第一请求信息的第一待选波束，从而第二终端设备在确定接收质量满足预设条件的接收波束时，同时能够确定该接收波束对应的第一待选波束，并用第一反馈信息指示该第一待选波束，第一终端设备成功对该第一反馈信息解码后无需通过对比选择第一波束即可以将第一反馈信息指示的该第一待选波束作为第一波束。减少了第一终端设备的开销，提高了侧行链路建立的速度。
结合第一方面，在第一方面的某些实现方式中，所述第一波束对应的第一反馈信息的接收质量大于第一门限值。
第一终端设备对第一反馈信息进行测量，在用第一待选波束对第一反馈信息进行接收时，可以在获得接收质量大于第一门限值的第一待选波束后，即停止对承载于剩余第一待选波束的第一反馈信息进行接收及测量，能够较快的完成粗颗粒度波束配对，减少第一终端设备的扫描及测量开销。
或者，第一终端设备对第一反馈信息进行测量，在用第一待选波束对第一反馈信息进行接收时，可以从多个接收质量大于第一门限值的第一待选波束中任意选择其一作为第一波束，能够完成粗颗粒度波束配对。
结合第一方面，在第一方面的某些实现方式中，所述第一波束对应的第一反馈信息的接收质量是所述多个第一待选波束对应的第一反馈信息的接收质量中最高的。
第一终端设备对第一反馈信息进行测量，可以使用所有的第一待选波束对承载于第二终端设备第二波束的第一反馈信息进行测量，通过对比选择接收质量最高的第一待选波束作为第一波束，该第一波束的接收质量同样大于第一门限值。通过该技术方案选择通信质量的最好的波束作为第一波束，能够提高链路建立后第一终端设备与第二终端设备的通信质量。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：所述第一终端设备向所述第二终端设备发送资源指示信息，所述资源指示信息用于指示专用资源。
在申请实施例中，不采用参考信号与数据同传的方式，本申请使用专用资源发送第一参考信号，从而使得波束配对更加便捷，无需受数据传输的影响，增加波束配对速度，提高侧行链路的通信效率，该专用资源可以是周期性资源或非周期性资源。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：所述第一终端设备根据所述第一波束，基于所述专用资源使用多个第三待选波束向所述第二终端设备发送第一参考信号；所述第一终端设备接收来自所述第二终端设备的测量报告；其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
第一终端设备根据第一波束，使用多个第三待选波束向第二终端设备发送第一参考信号，从而根据第二终端设备对第一参考信号接收得到的测量报告，从第三待选波束中确定第三波束，获得相对于第一波束而言细颗粒度的第三波束，从而使得第一终端设备与第二终端设备之间的侧行链路建立后，获得更好的通信质量。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：所述第一终端设备根据所述测量报告，确定第三波束；所述第三波束是所述多个第三待选波束之一。
第一终端设备根据从第二终端设备接收到的测量报告，依据一定的预设条件，选择合适的第三待选波束作为第三波束，从而确定自己的细颗粒度波束作为与第二终端设备通信时使用的波束。
在一些实施例中，第一终端设备根据测量报告，选择接收质量最高的第三待选波束作为第三波束，从而获得较好的通信质量；
在另一些实施例中，第一终端设备根据测量报告，在接收质量满足门限值的多个第三待选波束中任意确定一个作为第三波束。
结合第一方面，在第一方面的某些实现方式中，所述第一参考信号的资源是周期性资源。
在本申请实施例中，第一终端设备可以向第二终端设备发送资源指示信息，该资源是专用资源且周期性配置，从而第二终端设备能够更便捷地接收到资源指示信息和对应的参考信号，快速进行侧行链路上的波束配对。
结合第一方面，在第一方面的某些实现方式中，在第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息之前，所述方法还包括：所述第一终端设备获取所述多个第一待选波束。
在该实施例中，第一终端设备发送第一请求信息使用的多个第一待选波束可以为第一终端设备的全部波束，也可以为第一终端设备的部分波束，在此之前，第一终端设备还可以从更多的波束中确定该多个第一待选波束，从而加快单播连接的效率。
例如，第一终端设备可以通过发送第三参考信号(可以为SSB信号)并根据其他多个接收该第三参考信号的终端设备的反馈信息确定该多个第一待选波束(后面具体介绍)；或者第一终端设备可以通过周期性扫描其他终端设备发送的参考信号(可以SSB信号)并根据接收质量确定该多个第一待选波束；或者，第一终端设备还可以通过其他方式，例如预先知道的周围终端设备的位置确定该多个第一待选波束等，此处不再赘述。
结合第一方面，在第一方面的某些实现方式中，所述第一终端设备获取所述多个第一待选波束，包括：所述第一终端设备获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值Hn，n为正整数；所述第一终端设备根据所述第n资源配置参数，使用 Bn个波束发送第三参考信号；所述第一终端设备接收来自多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束。
在该实施例中，第一终端设备会确定多个第一待选波束，具体的，可以根据第n配置参数发送第三参考信号，并根据多个终端设备反馈的信息确定An个波束，根据An和Hn的数量关系，确定多个第一待选波束。
如果n为1，则第一终端设备可以根据A1和H1的数量关系确定多个第一待选波束。如果n大于或等于2，第一终端设备可以根据An和Hn的数量关系确定多个第一待选波束，并且在第一终端设备根据An和Hn的数量关系确定多个第一待选波束之前，第一终端设备可以根据第一资源配置参数至第n-1资源配置参数分别发送了参考信号，并且A1和H1的数量关系至An-1和Hn-1的数量关系均满足一定条件。
另外，第二反馈信息可以通过显示或隐式方式指示该An个波束，显示是通过在第二反馈信息中直接指示波束索引、ID、资源等，隐式方式是通过第二反馈信息的反馈资源位置指示波束。
结合第一方面，在第一方面的某些实现方式中，所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束，包括：在所述An≥Hn时，将所述An个波束确定为所述多个第一待选波束。
在该实施例中，当An≥Hn时，意味着An个波束的通信质量较好且An的数量满足条件，这可能是由于该An个波束的方向上有其他终端设备，第一终端设备可以将该An个波束作为多个第一待选波束发送DCR信息与其他终端设备(例如，第二终端设备)进行单播连接，由于可能剔除了没有终端设备方向的波束，能够提高单播连接的效率。另外，选择的波束数量超过Hn时，可以避免选择的波束较少使得后续单播连接时选择不到合适的波束(部分波束可能是由于短时间的障碍或者由于终端设备移动导致短时间内接受质量较低)。
结合第一方面，在第一方面的某些实现方式中，所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束，包括：在所述An＜Hn时，将所述Bn个波束确定为所述多个第一待选波束。
在该实施例中，如果An＜Hn时，接收质量较高的波束的数目低于阈值，第一终端设备可以将发送第三参考信号的Bn个波束作为多个第一待选波束发送DCR信息。接收质量较高的波束的数目低于阈值可能是由于终端设备的移动导致的例如参考信号发送周期和接收周期不匹配导致部分波束接收质量很低，或者也可以由于终端设备移动导致波束的接收质量处于动态变化中，这时候使用Bn个波束而非数量较低的An个波束发送DCR信息，有利于单播连接时选择更好的波束，提高后续通信的质量。
结合第一方面，在第一方面的某些实现方式中，所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束，包括：在所述An＜Hn时，所述第一终端设备获取第n+1资源配置参数，根据所述第n+1资源配置参数确定所述多个第一待选波束，所述第n资源配置参数包括第n周期、第n间隔和第n资源，所述第n+1资源配置参数包括第n+1周期、第n+1间隔和第n+1资源，所述第n周期、所述第n间隔、所述第n资源分 别为所述第n资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1周期、所述第n+1间隔、所述第n+1资源分别为所述第n+1资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1资源配置参数满足以下至少一项：所述第n+1周期小于所述第n周期；所述第n+1资源少于所述第n资源。
在该实施例中，在An＜Hn时，第一终端设备可以获取第n+1资源配置参数，从而可以使用该第n+1资源配置参数继续发送参考信号，确定An+1个接收质量大于阈值的波束。第一终端设备使用第n资源配置参数获得的接收质量较好的波束数目低于预设阈值可能是由于第三参考信号的发送周期与接收周期不匹配或同一发送周期内承载于不同发送波束的第三参考信号的发送间隔和接收间隔不匹配导致的，当第n+1周期小于第n周期或第n+1间隔小于第n间隔时，也就是减小参考信号的发送周期或同一周期内参考信号的发送间隔时，可能能够获得更多的接收质量大于预设阈值的波束，便于后续进行单播连接时使用。
当第n+1资源小于第n资源时，第一网络设备减少了为第一终端设备发送参考信号配置的资源，这样，第一终端设备可能会通过波束赋形形成更少数量的波束，单个波束的覆盖面积增加。这样，通过该第n+1资源配置参数即使获取的接收质量大于预设阈值的波束数量不变或降低，在单播连接时也容易找到质量较好的波束。
结合第一方面，在第一方面的某些实现方式中，所述第一终端设备获取所述第n+1资源配置参数包括：在所述An＜Hn时，所述第一终端设备向第一网络设备发送请求信息，所述请求信息用于获取所述第n+1资源配置参数；所述第一终端设备从所述第一网络设备接收所述第n+1资源配置参数；或者，所述第一终端设备根据从所述第一网络设备接收的资源配置列表，获取所述第n+1资源配置参数，所述资源配置列表包括所述第n资源配置参数和所述第n+1资源配置参数。
在该实施例中，第一终端设备使用的包括第n资源配置参数、第n+1资源配置参数的多个资源配置参数可以设置在资源配置列表中，资源配置列表可以是第一终端设备第一次发送第三参考信号之前从第一网络设备处接收的。该多个资源配置参数可以在资源配置列表中按照一定的规律排列，从而在第一终端设备通过某一资源配置参数获取的接收质量较好的波束的数量低于阈值时，可以方便地从列表中获取下一资源配置参数，减少了第一终端设备和第一网络设备的信令交互，提高了便捷性。
或者，第一终端设备可以在每次需要获取资源配置参数时向第一网络设备发送请求信息，这样实现按需获取资源配置参数，减小了预配置导致的资源浪费。
结合第一方面，在第一方面的某些实现方式中，所述多个终端设备包括所述第二终端设备。
第二方面，提供了一种侧行链路管理方法，包括：第一终端设备获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值Hn；所述第一终端设备根据所述第n资源配置参数，使用Bn个波束发送第三参考信号；所述第一终端设备接收来自多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；在所述An＜Hn时，所述第 一终端设备使用全向波束向第二终端设备发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接。
在该实施例中，第一终端设备可以发送第三参考信号，并根据多个终端设备接收到该第三参考信号后的反馈信息确定An个波束，该An个波束的接收质量大于接收质量阈值。该An个波束的方向可能有其他终端设备，从而这些终端设备反馈的对应方向上的波束的接收质量较高。如果接收质量大于阈值的波束数量An过少，使用这些波束进行单播连接时(发送第一请求信息)可能导致单播连接失败。这时，使用全向波束进行单播连接可以提高后续单播连接的成功率。
n＝1时，第一终端设备可以在第一次发送参考信号获得的A1＜H1时，即使用全向波束进行后续的单播连接；如果n≥2，第一终端设备可以在第n次发送参考信号获得的An＜Hn时才使用全向波束进行单播连接，而前面第1至n-1次发送参考信号获得的接收质量高于预设阈值的波束较低时，获得下一资源配置参数进行再次尝试。
第三方面，提供了一种侧行链路管理方法，该方法由第二终端设备执行。包括：第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息，所述第一请求信息用于所述第一终端设备触发与所述第二终端设备的连接；所述第二终端设备根据所述第一请求信息，确定第二波束，所述第二波束是所述多个第二待选波束之一；所述第二终端设备使用所述第二波束向所述第一终端设备发送第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈。
第二终端设备使用多个第二待选波束接收第一终端设备向多个方向发送的第一请求信息并对该请求信息进行测量，根据测量结果确定从第二待选波束中确定第二波束。并复用该第二波束向第一终端设备发送第一反馈信息，便于第一终端设备根据第一反馈信息确定第一波束，从而第一终端设备和第二终端设备可以确定各自的接收质量满足一定条件的波束作为侧行链路的通信波束，提高侧行链路的通信质量。
结合第三方面，在第三方面的某些实现方式中，所述第一请求信息是所述第一终端设备通过多个第一待选波束发送的，所述方法还包括：所述第二终端设备从所述第一终端设备接收所述多个第一待选波束的数目；其中，所述第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息，包括：所述第二终端设备根据所述多个第一待选波束的数目，使用多个第二待选波束从第一终端设备接收基于所述多个第一待选波束的第一请求信息。
结合第三方面，在第三方面的某些实现方式中，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括第一波束的指示信息，所述第一波束是所述多个第一待选波束之一。
结合第三方面，在第三方面的某些实现方式中，所述第二波束对应的第一请求信息的接收质量大于第二门限值。
结合第三方面，在第三方面的某些实现方式中，所述第二波束对应的第一请求信息的接收质量是所述多个第二待选波束对应的第一请求信息的接收质量中最高的。
结合第三方面，在第三方面的某些实现方式中，所述方法还包括：所述第二终端设备从所述第一终端设备接收资源指示信息，所述资源指示信息用于指示专用资源。
结合第三方面，在第三方面的某些实现方式中，所述方法还包括：所述第二终端设备 使用所述第二波束，基于所述专用资源从所述第一终端设备接收基于多个第三待选波束发送的第一参考信号；所述第二终端设备向所述第一终端设备发送测量报告；其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
结合第三方面，在第三方面的某些实现方式中，在所述第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息之前，所述方法还包括：所述第二终端设备接收承载于所述第一终端设备的Bn个波束的第三参考信号，所述Bn个波束是所述第一终端设备根据第n资源配置参数确定的；所述第二终端设备向所述第一终端设备发送反馈信息，所述反馈信息用于指示所述Bn个波束中接收质量大于或等于接收质量阈值的波束，所述多个第一待选波束包括所述接收质量大于或等于接收质量阈值的波束。
第四方面，提供了一种侧行链路管理方法，包括：第二终端设备接收承载于所述第一终端设备的Bn个波束的第三参考信号，所述Bn个波束是所述第一终端设备根据第n资源配置参数确定的；所述第二终端设备向所述第一终端设备发送反馈信息，所述反馈信息用于指示所述Bn个波束中接收质量大于或等于接收质量阈值的波束；接收承载于第一终端设备的多个第一待选波束的第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接，所述多个第一待选波束包括所述接收质量大于或等于接收质量阈值的波束。
第五方面，提供了一种侧行链路管理装置，包括：收发单元，用于使用多个第一待选波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接；所述收发单元，还用于使用多个第一待选波束从所述第二终端设备接收第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈；处理单元，所述处理单元用于根据所述第一反馈信息，确定第一波束，所述第一波束是所述多个第一待选波束之一。
在本申请实施例中，该装置的收发单元使用多个第一待选波束向第二终端设备重复发送第一请求信息，从而触发与第二终端设备的连接，并通过第一请求信息使得第二终端设备确定接收质量较好的波束，接收第二终端设备发送的第一反馈信息，处理单元根据第一反馈信息从第一待选波束中确定第一波束，使得第一终端设备和第二终端设备可以获得通信质量良好的收发波束，提高侧行链路的通信质量。
结合第五方面，在第五方面的某些实现方式中，所述处理单元具体用于执行以下操作之一：通过HARQ使用多个第一待选波束向第二终端设备重复发送第一请求信息；通过PDCP使用多个第一待选波束向第二终端设备重复发送第一请求信息；通过PC5-S层使用多个第一待选波束向第二终端设备重复发送第一请求信息。
结合第五方面，在第五方面的某些实现方式中，所述收发单元还用于：向所述第二终端设备发送所述多个第一待选波束的数目。
结合第五方面，在第五方面的某些实现方式中，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括所述第一波束的指示信息。
结合第五方面，在第五方面的某些实现方式中，所述第一波束对应的第一反馈信息的接收质量大于第一门限值。
结合第五方面，在第五方面的某些实现方式中，所述第一波束对应的第一反馈信息的接收质量是所述多个第一待选波束对应的第一反馈信息的接收质量中最高的。
结合第五方面，在第五方面的某些实现方式中，所述收发单元还用于：向所述第二终端设备发送资源指示信息，所述资源指示信息用于指示专用资源。
结合第五方面，在第五方面的某些实现方式中，所述收发单元还用于：根据所述第一波束，基于所述专用资源使用多个第三待选波束向所述第二终端设备发送第一参考信号；接收来自所述第二终端设备的测量报告；所述处理单元，还用于根据所述测量报告，确定第三波束；其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
结合第五方面，在第五方面的某些实现方式中，所述处理单元，还用于根据所述测量报告，确定第三波束，所述第三波束是所述多个第三待选波束之一。
结合第五方面，在第五方面的某些实现方式中，所述处理单元还用于：获取所述多个第一待选波束。
结合第五方面，在第五方面的某些实现方式中，所述处理单元，具体用于：获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值Hn，n为正整数；根据所述第n资源配置参数，使用Bn个波束发送第三参考信号；接收来自多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；根据所述An和Hn的数量关系，确定所述多个第一待选波束。
结合第五方面，在第五方面的某些实现方式中，所述处理单元，具体用于：在所述An≥Hn时，将所述An个波束确定为所述多个第一待选波束。
结合第五方面，在第五方面的某些实现方式中，所述处理单元，具体用于：在所述An＜Hn时，将所述Bn个波束确定为所述多个第一待选波束。
结合第五方面，在第五方面的某些实现方式中，所述处理单元，具体用于：在所述An＜Hn时，所述第一终端设备获取第n+1资源配置参数，根据所述第n+1资源配置参数确定所述多个第一待选波束，所述第n资源配置参数包括第n周期、第n间隔和第n资源，所述第n+1资源配置参数包括第n+1周期、第n+1间隔和第n+1资源，所述第n周期、所述第n间隔、所述第n资源分别为所述第n资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1周期、所述第n+1间隔、所述第n+1资源分别为所述第n+1资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1资源配置参数满足以下至少一项：所述第n+1周期小于所述第n周期；所述第n+1间隔小于所述第n间隔；所述第n+1资源少于所述第n资源。
结合第五方面，在第五方面的某些实现方式中，所述处理单元，具体用于：在所述An＜Hn时，所述第一终端设备向第一网络设备发送请求信息，所述请求信息用于获取所述第n+1资源配置参数；从所述第一网络设备接收所述第n+1资源配置参数；或者，根据从所述第一网络设备接收的资源配置列表，获取所述第n+1资源配置参数，所述资源配置列表是所述第一终端设备获取第一资源配置参数时从所述第一网络设备接收的，所述资源配置列表包括所述第n资源配置参数和所述第n+1资源配置参数。
结合第五方面，在第五方面的某些实现方式中，所述多个终端设备包括所述第二终端 设备。
第六方面，提供了一种侧行链路管理装置，包括：处理单元，用于获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值H1；收发单元，用于根据所述第n资源配置参数，使用Bn个波束发送第三参考信号；所述收发单元，还用于接收来自所述多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；所述收发单元，还用于在所述A1＜H1时，所述第一终端设备使用全向波束向第二终端设备发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接，所述第二终端设备属于所述多个终端设备。
第七方面，提供了一种侧行链路管理装置，包括：收发单元，用于使用多个第二待选波束从第一终端设备接收第一请求信息，所述第一请求信息用于所述第一终端设备触发与所述装置的连接；处理单元，用于根据所述第一请求信息，确定第二波束，所述第二波束是所述多个第二待选波束之一；所述收发单元，还用于使用所述第二波束向所述第一终端设备发送第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈。
在本申请实施例中，收发单元使用多个第二待选波束从第一终端设备接收第一请求信息，处理单元根据第一请求信息，确定第二波束。收发单元向第一终端设备发送第一反馈信息，从而第一终端设备可以同样依据该第一反馈信息，确定接收质量较好的波束，提高侧行链路的通信质量。
结合第七方面，在第七方面的某些实现方式中，所述第一请求信息是所述第一终端设备通过多个第一待选波束发送的，所述收发单元还用于：从所述第一终端设备接收所述多个第一待选波束的数目；其中，所述使用多个第二待选波束从第一终端设备接收第一请求信息，包括：根据所述多个第一待选波束的数目，使用多个第二待选波束从第一终端设备接收基于所述多个第一待选波束的第一请求信息。
结合第七方面，在第七方面的某些实现方式中，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括第一波束的指示信息，所述第一波束是所述多个第一待选波束之一。
结合第七方面，在第七方面的某些实现方式中，所述第二波束对应的第一请求信息的接收质量大于第二门限值。
结合第七方面，在第七方面的某些实现方式中，所述第二波束对应的第一请求信息的接收质量是所述多个第二待选波束对应的第一请求信息的接收质量中最高的。
结合第七方面，在第七方面的某些实现方式中，所述收发单元还用于：从所述第一终端设备接收资源指示信息，所述资源指示信息用于指示专用资源。
结合第七方面，在第七方面的某些实现方式中，所述装置收发单元，还用于：根据所述专用资源，使用所述第二波束从所述第一终端设备接收基于多个第三待选波束发送的第一参考信号；向所述第一终端设备发送测量报告；其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
结合第七方面，在第七方面的某些实现方式中，所述收发单元，还用于：接收承载于所述第一终端设备的Bn个波束的第三参考信号，所述Bn个波束是所述第一终端设备根据第n资源配置参数确定的；向所述第一终端设备发送反馈信息，所述反馈信息用于指示所 述Bn个波束中接收质量大于或等于接收质量阈值的波束，所述多个第一待选波束包括所述接收质量大于或等于接收质量阈值的波束。
第八方面，提供了一种侧行链路管理装置，包括：收发单元，用于接收承载于所述第一终端设备的Bn个波束的第三参考信号，所述Bn个波束是所述第一终端设备根据第n资源配置参数确定的；向所述第一终端设备发送反馈信息，所述反馈信息用于指示所述Bn个波束中接收质量大于或等于接收质量阈值的波束；接收承载于第一终端设备的多个第一待选波束的第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接，所述多个第一待选波束包括所述接收质量大于或等于接收质量阈值的波束。
第九方面，提供了一种通信装置，包括：处理器和通信接口，所述通信接口用于接收来自所述通信装置之外的其他通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其他通信装置，所述处理器通过逻辑电路或执行代码指令用于实现第一方面或第一方面任一种实现方式、第二方面、第三方面或第三方面任一种实现方式、第四方面的方法。
第十方面，提供了一种通信系统，包括：第五方面或第五方面任意一种实现方式、第六方面、第七方面或第七方面任意一种实现方式、第八方面的装置。
第十一方面，提供了一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的终端设备执行第一方面或第一方面任意一种实现方式的方法，和/或使得安装有所述芯片的终端设备执行第二方面的方法，和/或使得安装有所述芯片的终端设备执行第三方面或第三方面任意一种实现方式的方法，和/或使得安装有所述芯片的终端设备执行第四方面的方法。
第十二方面，提供了一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序运行时，使得所述计算机执行第一方面或第一方面任意一种实现方式的方法；或者使得所述计算机执行第二方面的方法；或者使得所述计算机执行第三方面或第三方面任意一种实现方式的方法；或者使得所述计算机执行第二四方面的方法。
第十三方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，实现第一方面或第一方面任意一种实现方式的方法，或实现第二方面的方法，或实现第二方面或第二方面任意一种实现方式的方法，或实现第二方面的方法。
附图说明
图1是适用于本申请实施例的通信系统的示意性架构图。
图2是基于NR PC5接口侧行链路控制面协议栈示意图。
图3是本申请实施例提供的一种侧行链路管理方法示意性流程图。
图4是本申请实施例提供的一种侧行链路管理方法示意性流程图。
图5的(a)是本申请实施例提供的一种专用资源配置示意图。
图5的(b)是本申请实施例提供的另一种专用资源配置示意图。
图6是本申请实施例提供的一种测量链路管理方法的示意性流程图。
图7是本申请实施例提供的一种侧行链路管理方法示意性流程图。
图8是本申请实施例提供的一种侧行链路管理装置示意性框图。
图9是本申请实施例提供的另一种侧行链路管理装置示意性框图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等，车到其它设备(vehicle to X，V2X)，其中V2X可以包括车到互联网(vehicle to network，V2N)、车到车(vehicle to Vehicle，V2V)、车到基础设施(vehicle to infrastructure，V2I)、车到行人(vehicle to pedestrian，V2P)等，基于增强型邻近服务(proximityservices，ProSe)的V2X系统，车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车联网、机器类通信(machine type communication，MTC)、物联网(internet of things，IoT)、机器间通信长期演进技术(long term evolution-machine，LTE-M)，机器到机器(machine to machine，M2M)，非地面通信(non-terrestrial network，NTN)系统或者未来演进的其它通信系统等。
为便于理解本申请的实施例，首先对本申请中涉及到的术语做简单说明。
1、侧行链路中的广播、组播通信方式
侧行链路的广播、组播是指一个终端设备发送的广播或组播数据，能够被一个或多个终端设备接收到。例如，预先定义业务数据在PC5接口上传输时所使用的目的层2标识(Destination Layer-2 ID)。当发送设备有该广播业务数据发送时，可以直接通过用户面协议栈进行发送，在媒体接入控制(media access control protocol，MAC)层和/或物理层(physical，PHY)层填充该广播业务对应的Destination Layer-2 ID。对该广播业务感兴趣的终端设备可以在PHY层监听是否有该广播业务对应的Destination Layer-2 ID的业务数据，并进行接收、解析，但本申请不限于此。
2、侧行链路中的单播通信方式
单播是终端设备一对一的通信方式，发送设备通过目的地址指示其发送的单播数据的接收设备，接收设备根据单播数据的目的地址确定该单播数据是否是发送给自己的单播数据，以及根据单播数据的源地址确定该单播数据是由哪个设备发送的。可选地，两个终端设备可以通过信令交互建立该两个设备之间的单播连接，单播连接建立完成后可以进行单播通信。
3、侧行链路传输模式1(mode1)
侧行链路mode1是指终端设备根据网络设备发送的侧行链路调度授权(sidelink grant)确定用于发送侧行链路数据的资源。该侧行链路调度授权用于授权该终端设备专用的发送侧行链路数据的资源。例如，终端设备在发送侧行链路前，向网络设备上报缓存状态报告 buffer status reports，BSR)以通知网络设备待发送的数据量，网络设备根据终端设备上报的数据量为其授权相应资源。
4、侧行链路传输模式2(mode2)
侧行链路mode2是指网络设备预先分配用于竞争的侧行链路资源，多个终端设备可以在该用于竞争的侧行链路资源中竞争资源，在竞争到资源的情况下，终端设备可以在该竞争到的资源上发送侧行链路的数据。例如，终端设备根据测量该用于侧行链路的资源中的每个时频资源是否被占用、来选择未被占用的资源进行传输，但本申请不限于此。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1是适用于本申请实施例的通信系统的示意性架构图。
如图1所示，通信系统包括终端设备和网络设备。其中终端设备与网络设备之间通过上行链路或下行链路通信，终端设备之间可以存在侧行链路。示例性的，该通信系统可以包括第一终端设备110、第二终端设备120、第一网络设备130和第二网络设备140。其中，第一终端设备110与第一网络设备130通过第二链路进行通信，第二终端设备120与第二网络设备140通过第三链路进行通信，第一终端设备110与第二终端设备120之间通过第一链路进行通信，第一链路是侧行链路。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通讯(global system of mobile communication，GSM)系统或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(nodeB，NB)，还可以是LTE系统中的演进型基站(evolutional nodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
本申请仅以图1为例对本申请的技术方案进行叙述，可以理解的是，第一终端设备110和第二终端设备120也可以共同连接到一个网络设备，从而第一终端设备和第二终端设备可以通过该网络设备获取相应的资源配置。本申请图1所示的通信系统的连接方式不构成对本申请保护范围的限定。
应理解，图1仅以通信系统包括第一终端设备110、第一网络设备130、第二终端设 备120、第二网络设备140为例对本申请的技术方案进行说明，该通信系统可以仅包括第一终端设备110和第二终端设备120，或者包括更多的终端设备和网络设备，本申请各个实施例中的通信设备个数也不应理解成对本申请应用范围的限定。
图1所示的通信系统中包括两种接口，即Uu接口和PC5接口。Uu接口是终端设备与网络设备的接口，例如第一终端设备110与第一网络设备130、第二终端设备120与第二网络设备140之间的接口即为Uu接口。PC5接口是终端设备之间的直连接口，例如第一终端设备110和第二终端设备120之间的通信接口即为PC5接口。
图2示出了基于NR PC5接口的侧行链路通信架构的控制面协议栈。控制面协议栈主要用于传输PC5信令协议层(PC5-signal，PC5-S)信令以及SL RRC信令。两个终端设备建立单播连接，需要发起连接的终端设备(UE1)的PC5-S层发送直接通信请求(directcommunicationrequest，DCR)信息请求建立单播连接，并告知对侧终端设备(UE2)一些基本用户信息等。用于传输PC5-S信令的控制面协议栈如图2的(a)所示：包括PHY层、MAC层、无线链路控制层(radiolinkcontrol，RLC)、PDCP层和PC5-S层，其中PHY层处于L1层，MAC层、RLC层、PDCP层处于L2层，PC5-S层处于L3层。
具体来说，终端设备之间建立单播连接包括以下步骤：
步骤1，第一终端设备(UE1)向第二终端设备(UE2)发送DCR信息，该DCR信息携带UE1的应用层标识、UE2的应用层标识、要求建立L2链路的V2X服务类型和建立链路的安全信息等。
步骤2，UE2向UE1发送直接安全模式命令(directsecurity modecommand)反馈。
步骤3，UE1向UE2发送直接安全模式完成信息(direct security modecomplete)通知UE2安全链接完成。
步骤4，UE2向UE1发送直接通信回应(directcommunicationaccept，DCA)信息，该DCA信息包括UE2的应用层标识、服务质量信息(quality of service，QoS)、IP地址配置等。
在单播连接建立后，UE1会发送一些RRC配置信令与对侧UE2建立RRC连接。用于传输SL RRC信令的控制面协议栈如图2的(b)所示：包括PHY层、MAC层、RLC层、PDCP层和无线资源控制层(radioresourcecontrol，RRC)，其中PHY层处于L1层，MAC层、RLC层、PDCP层处于L2层，RRC层处于L3层。
具体来说，UE1的V2X应用层会把分配给单播连接的PC5链路标识以及相关信息发送给接入层，包括L2标识(包括UE1和UE2的L2标识)和相应的QoS参数，以协助接入层维护PC5链路标识和PC5单播连接相关信息。
但是，由于在步骤1中是利用全向波束发送DCR信息或DCA信息，这种建立侧行链路的方式对两个终端设备之间的距离有较大限制。此外，随着通信系统中更高频率电磁波的应用，终端设备之间建立侧行链路的方式适用范围进一步减小。
图3示出了本申请实施例提供的一种侧行链路管理方法300示意性流程图。
S310，第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接。
对应，第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息，所述第一请求信息用于所述第一终端设备触发与所述第二终端设备的连接。
在S310中，第一待选波束可以是信道状态信息参考信号(channel state information reference signal，CSI-RS)波束、同步信号和物理广播信道块(synchronization signal and physical broadcast channel，SSB)波束等。不同于时分复用和频分复用，波束是基于空分复用而形成的，将信号的能量集中于某一方向即形成了波束。波束使得通信系统在时域资源、频域资源的基础上进一步增加空间资源从而支持更多的用户，还能够通过将信号集中于一个方向使得信号传输的距离更远。当设备之间进行通信时，可以使用各自的波束进行发送或接收。波束并没有发送波束或接收波束的区分，当波束用于发送时即可以称为发送波束，当波束用于接收时即可以称为接收波束。
第一待选波束是第一终端设备通过波束赋形形成的波束，第一待选波束的宽度可以为第一宽度；第二待选波束是第二终端设备通过波束赋形形成的波束，例如第二待选波束的宽度可以为第二宽度。第一宽度和第二宽度可以相同，也可以不同。
第一请求信息用于第一终端设备请求与第二终端设备建立侧行链路连接。第一请求信息包括DCR信息，该DCR信息携带有第一终端设备的标识信息和第二终端设备的标识信息，该标识信息可以是应用层标识，该DCR信息还可以携带要求建立的V2X服务类型和建立链路的安全信息等。因此第二终端设备能够根据DCR信息中携带的第二终端设备的标识确认第一终端设备建立侧行链路的目标终端设备是自己，从而执行后续其他操作。
第一终端设备可以是第一终端设备和第二终端设备之中的发送终端设备，例如，第一终端设备可以根据存在需要向第二终端设备传输的数据或信令，从而向第二终端设备发送第一请求信息，触发与第二终端设备建立连接。
在本申请实施例中，重复代表的是使用不同的第一待选波束发送包括同样DCR信息的第一请求信息，即使用不同的空间资源发送第一请求信息，对于每一个第一待选波束，第一请求信息的发送可以是周期性或者非周期性的。
在本申请实施例中，所述第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，包括以下操作之一：
第一终端设备通过混合自动重传请求(hybrid automatic repeat request，HARQ)使用多个第一待选波束向第二终端设备重复发送第一请求信息；
第一终端设备通过分组数据汇聚协议(packet data convergence protocol，PDCP)使用多个第一待选波束向第二终端设备重复发送第一请求信息；
第一终端设备通过PC5-S层使用多个第一待选波束向第二终端设备重复发送第一请求信息。
在一些实施例中，第一终端设备可以利用HARQ方式使用不同方向的多个第一待选波束发送第一请求信息，其包括相同的DCR信息。可以利用HARQ重传的方式多次发送第一请求信息，并且每次使用不同方向的第一待选波束，即可以实现波束扫描。
在另一些实施例中，第一终端设备可以将DCR信息在PDCP层重复传输。即将DCR信息在PDCP层复制，然后将复制的DCR信息分别递交给不同的RLC实体进行传输，进而通过不同的逻辑信道传输到MAC层，MAC层在传输这些携带相同DCR信息的逻辑信道时，将这些逻辑信道映射到不同的第一待选波束的资源上发送，从而实现DCR信息在不同方向上的波束扫描过程，以不同方向的第一待选波束发送包括相同的DCR信息的第一请求信息。
在另一些实施例中，第一终端设备可以利用PC5-S重复方式以不同方向的第一待选波束发送包含相同的DCR信息的第一请求信息。PC5-S层一般用于提供侧行链路连接管理功能，如侧行链路的建立、释放、安全参数控制、IP地址分配等。DCR信息由PC5-S层发送，包含第一终端设备的基本信息，并且通过接入层与第二终端设备建立连接，PC5-S层需要额外的指示让物理层知道多个来自PC5-S层的新包是同样的内容，从而物理层可以用不同的第一待选波束将重传信息发送到第二终端设备。
三种重复发送的方式都能实现波束扫描，HARQ重传的方式由于不需要复制同样的DCR信息，仅需要对DCR信息进行重复发送，开销较少，更容易实现。
S320，第二终端设备根据第一请求信息，确定第二波束，第二波束是多个第二待选波束之一。
在S310中，第二终端设备用多个第二待选波束利用波束扫描的方式接收该第一请求信息时，会对第一请求信息中的用于测量的信号进行测量，从而进行S320中的确定第二波束的过程。例如第一终端设备的波束有两个，波束标识分别为beam1，beam2；第二终端设备的波束有两个，波束标识分别为beam3，beam4，第二终端设备进行第一请求信息的接收时，可能接收到承载于发送波束-接收波束为beam1-beam3，beam1-beam4，beam2-beam3，beam2-beam4的第一请求信息，对接收质量进行测量后，例如确定波束标识为beam4的波束为第二波束。
在一些实施例中，所述第二波束对应的第一请求信息的接收质量大于第一门限值。
例如，第二终端设备在进行波束扫描以接收该第一请求信息时，可以在当前使用的第二待选波束的接收质量大于第一门限值时，即将当前波束作为第二波束。当前波束的接收质量不满足预设条件时，继续进行下一个第二待选波束承载的第一请求信息接收，直至获得接收质量大于第一门限值第二待选波束，该波束即被确定为第二波束。其中，用于表征接收质量的参数可以为当前波束的L1或L3参考信号接收功率(reference signal received power，RSRP)、参考信号接收质量(reference signal received quality，RSRQ)或者信号与干扰加噪声的比值(signal to interference plus noise ratio，SINR)等参数。例如，第二终端设备当前用于接收第一请求信息的第二待选波束标识为beam4，且其接收质量大于第一门限值，则可以将beam4作为第二波束。
再如，第二终端设备在进行波束扫描以接收该第一请求信息时，可以在接收到基于不同发送接收波束组合的第一请求信息，当其中的多个第二待选波束承载的第一请求信息的接收质量都满足第一门限值，可以从该多个待选波束中任意选择其中一个待选波束作为第二波束。
在另一些实施例中，所述第二波束对应的第一请求信息的接收质量是所述多个第二待选波束对应的第一请求信息的接收质量中最高的。
具体地，所述第一终端设备可以向所述第二终端设备发送所述多个第一待选波束的数目；对应，第二终端设备接收来自第一终端设备的第一待选波束的数目；其中，所述第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息，包括：所述第二终端设备根据所述多个第一待选波束的数目，使用多个第二待选波束从第一终端设备接收基于所述多个第一待选波束的第一请求信息。第一请求信息中可以包括侧行链路控制信息(sidelink control information，SCI)信息，SCI信息可以指示发送波束的数目。从而第二 终端设备可以根据发送波束的数目，用更少的时间遍历所有发送接收波束组合，从所有波束中选择接收质量最好的或者接收质量满足门限值的第二待选波束作为第二波束。
其中第二波束可以是L1或L3的RSRP、RSRQ、SINR最高的波束。例如，第二终端设备获知第一终端设备的使用的第一待选波束为2个，则可以使用自己的所有第二待选波束依次接收承载于两个第一待选波束的第一请求信息，遍历所有发送接收波束组合后，选择接收质量最好的第二待选波束作为第二波束。
当第一终端设备通过HARQ使用多个第一待选波束向第二终端设备重复发送第一请求信息时，第一待选波束的数目可以无需通过额外的信息例如SCI信令发送给第二终端设备，第二终端设备可以直接根据HARQ重传的性质获取第一待选波束的数目，从而更快地遍历所有发送-接收波束组合，选择接收质量满足门限值或进行接收质量的对比在满足门限值的第二待选波束中选择接收质量最好的波束作为第二波束。
在本申请实施例中，上述第二终端设备对第一请求信息的接收质量进行测量需要第二终端设备成功接收第一请求信息。第二终端设备判断成功接收第一请求信息的有以下三个标准：
例如，第二终端设备接收的第一请求信息的接收质量超过预设门限值；
再如，第二终端设备接收的第一请求信息解码成功；
又如，第二终端设备接收到的第二请求信息的接收质量未超过预设门限值，且单次解码失败，但是第二终端设备对该第一请求信息的下一次解码成功，通过HARQ软合并也可以判断成功接收第一请求信息，并进行下一步的操作。
S330，第二终端设备使用第二波束向第一终端设备发送第一反馈信息，第一反馈信息用于对第一请求信息进行反馈。
对应的，第一终端设备使用多个第一待选波束从第二终端设备接收第一反馈信息。
在S330中，第一反馈信息可以包括DCA信息，该DCA信息包括第二终端设备的标识信息，该标识信息可以是应用层标识信息，该DCA信息还可以包括QoS信息以及IP地址配置等。第二终端设备复用在S320中确定的第二波束发送第一反馈信息，其中第一反馈信息中的DCA信息是对DCR信息的反馈。
在本申请实施例中，第二终端设备在接收到第一终端设备基于所有第一待选波束发送的第一请求信息之后，确定第二波束，之后使用该第二波束向第一终端设备发送第一反馈信息。
S340，第一终端设备根据第一反馈信息，确定第一波束，第一波束是多个第一待选波束之一。
在一些实施例中，第一终端设备用波束扫描的方式使用多个第一待选波束接收该第一反馈信息并对第一反馈信息中的用于测量的信息进行测量，根据接收质量确定第一波束，第一波束是多个第一待选波束之一。例如，第一终端设备使用beam1、beam2接收承载于第二终端设备的第二波束beam4的第一反馈信息，从而可以根据接收质量确定第一波束。
第一终端设备确定第一波束的方式和步骤S320中第二终端设备确定第二波束时的方式类似。即在一些实施例中，第一波束对应的第一反馈信息的接收质量大于第一门限值；或者在另一些实施例中，第一波束对应的第一反馈信息的接收质量是多个第一待选波束对应的第一反馈信息的接收质量中最高的。具体细节可以参考第二波束的确定过程，此处为 简洁，不再赘述。
在另一些实施例中，S310中的第一请求信息可以包括承载第一请求信息的第一待选波束的指示信息，第一反馈信息包括第一波束的指示信息。从而第一终端设备直接根据第一反馈信息中的第一波束的指示信息，确定第一波束。
具体地，第一请求信息中的SCI信息可以指示第一终端设备用于发送第一请求信息的第一待选波束，步骤S330中第二终端设备可以将确定的第二波束对应的第一待选波束的指示信息包含在第一反馈信息中发送给第一终端设备。从而第一终端设备可以在步骤S340中接收到第一反馈信息后即可以停止波束扫描及测量，直接通过第一反馈信息获知自身最优发送波束方向，并将该第一待选波束确定为第一波束，从而减少在确定第一波束时额外的扫描过程及对L1或L3的RSRP、RSRQ或SINR的测量过程，减少第一终端设备的扫描及测量开销。例如，如前所述，第二终端设备进行第一请求信息的接收时，可能接收到承载于beam1-beam3，beam1-beam4，beam2-beam3，beam2-beam4的第一请求信息，第二终端设备在确定接收波束为beam4的同时，可以根据SCI信息指示的第一待选波束，例如获知beam4对应的发送波束为beam1，可以在向第一终端设备发送第一反馈信息时，将指示beam1波束的信息发送给第一终端设备，从而第一终端设备通过盲扫接收到该第一反馈信息时，无需再次进行测量，即可以将beam1对应的波束作为第一波束进行后续操作，减少了第一终端设备的测量开销。
前述的第一待选波束的指示信息可以显示或隐式指示第一待选波束，即通过波束序号/编号/索引等显示指示第一待选波束或者通过第一待选波束的资源隐式指示该第一待选波束。具体的，第一待选波束的指示信息可以为以下至少一项：波束编号、波束管理资源编号，侧行信号资源号、波束的绝对索引、波束的相对索引、波束的逻辑索引、波束对应的天线端口的索引、波束对应的天线端口组索引、波束对连接(beam pair 1ink，BPL)信息、波束对应的发送参数(Tx parameter)、波束对应的接收参数(Rx parameter)、波束对应的发送权重、波束对应的权重矩阵、波束对应的权重向量、波束对应的接收权重、波束对应的发送权重的索引、波束对应的权重矩阵的索引、波束对应的权重向量的索引、波束对应的接收权重的索引、波束对应的接收码本、波束对应的发送码本、波束对应的接收码本的索引、波束对应的发送码本的索引中。
在本申请实施例中，上述第一待选波束、第二待选波束可以为信道状态信息参考信号CSI-RS波束、SSB波束或其他波束。
经过上述方法300的技术方案，第一终端设备和第二终端设备确定了各自的第一波束和第二波束，第一波束和第二波束可能为较宽的波束，为了进一步提高第一终端设备和第二终端设备的通信质量，还可以进行细颗粒度波束配对过程。
图4示出了本申请实施例提供的一种侧行链路管理方法示意性流程图，在方法400中，第一终端设备和第二终端设备在方法300的基础上，进一步将粗颗粒度的第一波束和第二波束波束成形为细颗粒度的波束，并进行细颗粒度波束配对。
S410，第一终端设备根据第一波束，使用多个第三待选波束向第二终端设备发送第一参考信号。
对应，第二终端设备使用第二波束从第一终端设备接收基于多个第三待选波束发送的第一参考信号。
在S410中，第三待选波束可以是第一波束经过进一步波束成形而形成的波束，例如第三待选波束的宽度可以小于第一波束的宽度。第一参考信号可以是CSI-RS信号或SSB信号，从而第三待选波束可以为CSI-RS或SSB波束。第一终端设备使用该多个第三待选波束向第二终端设备发送第一参考信号。例如，在方法300中第一波束是beam1，第二波束是beam4，在S410中，第一终端设备使用由beam1继续波束成形得到的beam1.1，beam1.2向第二终端设备发送第一参考信号，第二终端设备使用之前的beam4接收承载于beam1.1、beam1.2的第一参考信号。步骤S410是为了获得第一终端设备的细颗粒度波束，因此第二终端设备可以用之前确定的第二波束接收第一参考信号
在本申请实施例中，第一终端设备可以向第二终端设备发送资源指示信息，资源指示信息用于指示专用资源；对应，第二终端设备从第一终端设备接收资源指示信息。
该资源指示信息可以通过SCI信息发送给第二终端设备。该资源可以是时频资源或空间资源等，第一终端设备可以通过SCI信令向第二终端设备发送资源指示信息，从而第二终端设备可以根据资源指示信息，接收第一参考信号。
在一些实施例中，该专用资源可以是周期性的资源或者非周期性的资源，是为了第一参考信号的发送配置的资源。
不同于现有技术中将数据和参考信号共同传输，为了能够在没有数据需要发送时也能进行第一参考信号的发送，从而完成波束配对，在本申请实施例中，为第一参考信号设计了专用资源，即上述资源指示信息指示的第一参考信号的资源是专用资源。即在原有的侧行链路资源位置上单独发送参考信号，即不与物理侧行链路共享信道(physical sidelink share channel，PSSCH)的数据一起发送。
在本申请实施例中，第一终端设备还可以获取专用资源。
在一些实施例中，侧行链路上的资源分配为Mode1，当没有配置好的资源时，第一终端设备向第一网络设备发送专用资源请求信息；第一终端设备接收来自所述第一网络设备的专用资源指示信息，所述专用资源指示信息用于指示所述专用资源。
对应，第一网络设备接收来自第一终端设备的专用资源请求信息，第一网络设备向第一终端设备发送专用资源指示信息。
第一终端设备可以通过调度请求(scheduling request，SR)、RRC或者侧行链路用户信息(sidelink user information，SUI)向第一网络设备发送专用资源请求信息，申请用于第一参考信号的专用资源。从而第一网络设备可以在接收到第一终端设备的请求信息后，通过下行链路控制信息(downlink control information，DCI)向第一终端设备指示第一参考信号的专用资源。
在另一些实施例中，侧行链路上的资源分配为Mode2，包括第一终端设备和第二终端设备之间的侧行链路在内的多个链路竞争使用预配置的资源集合。第一终端设备获取其他侧行链路的资源占用信息；第一终端设备根据所述资源占用信息，确定所述专用资源。从而第一终端设备可以解调其他终端设备所在的侧行链路的广播SCI信息获知已经被占用的资源，从而从预配置的资源集合中选择尚未被占用的资源作为第一参考信号的专用资源。
以第一参考信号为CSI-RS信号为例，图5示出了本申请实施例提供的两种专用CSI-RS资源配置方式。
图5的(a)示出了本申请实施例提供的一种专用资源配置示意图。阴影部分是为侧 行链路配置的专用资源，可以看出，CSI-RS信号并没有随数据一并发送，从而实现便捷的波束配对。
在另一些实施例中，为了实现CSI-RS信号的独立发送，可以设计专用的CSI-RS发送机制。多个侧行链路共享CSI-RS信道，侧行链路的发送终端设备通过PC5-RRC信号通知对侧终端设备CSI-RS信号的资源配置，从而侧行链路两端的终端设备可以在相应的资源上进行CSI-RS的发送与接收。
图5的(b)出了本申请实施例提供的另一种专用资源配置示意图。可以看出，为CSI-RS信号的传输设计了专门的CSI-RS信道，且侧行链路1、侧行链路2和侧行链路3基于时分复用共享CSI-RS信道，提高了资源利用率，并且CSI-RS信号不与数据一同发送，实现了便捷的细颗粒度侧行链路波束配对。
在本申请实施例中，第一终端设备还可以在发送资源指示信息之前向第二终端设备发送相对资源指示信息，相对资源指示信息可以包括发送时域位置和反馈时域位置，所述发送时域位置用于指示第一参考信号的相对发送时域，所述反馈时域位置用于指示针对所述第一参考信号的进行反馈的相对反馈时域。
该相对资源指示信息可以是第一终端设备通过PC5-RRC信令或者SCI信令发送给第二终端设备的。第二终端设备接收到发送时域位置与反馈时域位置后，可以确定第一参考信号相对于前述的资源指示信息的相对发送时域和用于对第一参考信号进行反馈的相对反馈时域。例如该相对资源指示信息的相对发送时域和相对反馈时域分别为3个时隙和5个时隙，则第二终端设备在接收到前述的资源指示信息后，能够获知第一参考信号是在资源指示信息后3个时隙发送，从而在相应的时隙对第一参考信号进行接收，并在资源指示信息发送后5个时隙对接收的第一参考信号进行反馈。该相对资源指示信息也可以和前述的资源指示信息一起发送给第二终端设备。
S420，第二终端设备对第一参考信号进行测量，并向第一终端设备发送测量报告。
对应，第一终端设备接收来自第二终端设备的测量报告。
在S420中，测量报告用于指示第一参考信号的接收质量和对应的第三待选波束。接收质量包括第一参考信号L1或L3的RSRP、RSRQ、SINR等参数，测量报告中可以利用信道状态信息参考信号资源指示(CSI-RS resourceindicator，CRI)隐式指示对应的发送波束，该CRI即前述资源指示信息指示的资源，其与该多个第三待选波束一一对应。测量报告中也可以使用波束标识等显示指示对应的发送波束，在这种情况下，前述的第一终端设备向第二终端设备发送的资源指示信息中还可以包括相应的显示指示发送波束的波束标识，例如波束标识可以为波束索引等。
第二终端设备在接收到资源指示信息后就在相应的专用资源上使用之前确定的第二波束接收第一参考信号并对其接收质量进行测量。由于第一终端设备已经在资源指示信息指示了发送第一参考信号的资源，因此，第二终端设备能够将测量结果与相应的发送波束对应。测量结果包括L1或L3的RSRP、RSRQ、SINR等反映接收质量的参数。
上述第二终端设备向第一终端设备发送测量报告时，如果没有可用的资源，可以向第二网络设备请求测量报告的发送资源或解调其他侧行链路的SCI信息获取发送资源，相关细节可以参考前述第一参考信号的专用资源在Mode1和Mode2下的获取方式，此处不再赘述。
S430，第一终端设备根据测量报告，确定第三波束。
第三波束是该多个第三待选波束之一，第一终端设备可以根据测量报告，将接收质量满足预设条件的第一参考信号对应的第三待选波束作为第三波束，例如，可以将接收质量满足门限值的波束作为第三波束，或者，可以将接收质量最好的发送波束作为第三波束。具体细节可以参考第一波束或第二波束的确定方式。
S440，第一终端设备使用第三波束向第二终端设备发送第二参考信号。
对应，第二终端设备使用多个第四待选波束接收第二参考信号。
在S440中，第一终端设备使用第三波束发送第二参考信号，第三波束是第一终端设备确定的优选细颗粒度发送波束，在第一终端设备确定自己的优选细颗粒度发送波束之后，可以使用该第三波束向第二终端设备发送第二参考信号，从而第二终端设备使用多个第四待选波束接收来自第一终端设备的第二参考信号。
第四待选波束是第二波束进一步波束成形形成的细颗粒度波束，第四待选波束的宽度可以小于第二波束。
同样，第一终端设备还可以向第二终端设备发送资源指示信息，指示用于发送第二参考信号的资源，第一种终端设备还可以在发送资源指示信息之前向第二终端设备发送相对资源指示信息用于指示第二参考信号相对于资源指示信息的发送时域位置和用于反馈的反馈时域位置。第二参考信号的资源的相关细节可以参考第一参考信号的资源的相关细节，此处为简洁，不再赘述。
S450，第二终端设备对第二参考信号进行测量，并确定第四波束。
在S450中，第四波束是第四待选波束之一，第二终端设备确定第四波束的过程可以是根据当前第四待选波束的接收质量大于预设门限值或者遍历所有第三波束-第四待选波束组合选择接收质量最高的波束作为第四波束，根据L1或L3的RSRP、RSRQ、SINR等参数确定。
在方法400中，本申请介绍了第一终端设备先确定第三波束再由第二终端设备确定第四波束的过程。在具体情境下，也可以由第二终端设备先确定第四波束，再由第一终端设备确定第三波束。具体步骤如下：
步骤1，第一终端设备使用第一波束向第二终端设备发送第一参考信号。
对应，第二终端设备使用多个第四待选波束从第一终端设备接收第一参考信号。
第四待选波束是第二波束进一步波束成形得到的波束，第四待选波束的宽度可以小于第二波束的宽度。
步骤2，第二终端设备对第一参考信号进行测量，并确定第四波束。
第四波束是第四待选波束之一。
步骤3，第一终端设备使用多个第三待选波束向第二终端设备发送第二参考信号。
对应，第二终端设备使用第四波束接收第二参考信号。
第三待选波束是第一波束进一步波束成形得到的波束，第三待选波束的宽度可以小于第一波束。
步骤4，第二终端设备对第二参考信号进行测量，并向第一终端设备发送测量报告，测量报告指示第三待选波束和对应的第二参考信号的接收质量。
对应，第一终端设备接收来自第二终端设备的测量报告。
步骤5，第一终端设备根据测量报告，确定第三波束。
第三波束是第三待选波束之一。
具体细节可以参考前述的方法400中的描述，此处为简洁，不再赘述。
经过图3和图4的技术方案的步骤，第一终端设备和第二终端设备建立了单播连接。在一些实施例中，第一终端设备和第二终端设备用于通信的第三波束和第四波束的通信质量低于预设阈值，即发生了波束失败。
例如由第一终端设备根据来自第二终端设备的反馈信息确定发生波束失败，该反馈信息可以包括：针对第三波束和第四波束通信的否认(nonacknowledgement，NACK)的反馈、针对第三波束和第四波束通信的非连续传输次数反馈、针对第三波束和第四波束通信的测量信息的反馈中的至少一项，测量信息可以为L1或L3的RSRP、RSRQ、SINR等反映通信质量的参数。
则第一终端设备可以激活用于波束恢复的候选波束的资源，从而进行波束恢复的过程。在一些实施例中，第一终端设备可以通过向第二终端设备发送指示候选波束的资源的配置信息激活用于波束恢复的候选波束的资源，且该候选波束的资源是激活的，从而第一终端设备和第二终端设备可以使用该资源进行波束恢复。在另一些实施例中，第一终端设备在确定波束失败之前向第二终端设备发送指示候选波束的资源的配置信息激活用于波束恢复的候选波束的资源，且该候选波束的资源是去激活的，在确定波束失败之后，激活该候选波束的资源，向第二终端设备发送候选波束激活指示信息指示候选波束的资源已经被激活，从而第二终端设备可以接收第一终端设备激活该候选波束的资源时发送的参考信息，根据对接收质量的测量结果确定用于恢复的波束。
再如由第二终端设备确定波束失败，第二终端设备可以直接根据对参考信号或者数据的接收状况判断发生波束失败，具体指标可以参考第一终端设备确定波束失败的场景。
则第二终端设备在确定波束失败之后，可以向第一终端设备发送波束恢复请求信息，在第二终端设备确定波束失败之前，可以已经接收到第一终端设备发送的指示候选波束的资源的配置信息激活用于波束恢复的候选波束的资源，且该候选波束的资源是去激活的。从而第二终端设备确定发生波束失败之后，可以通过波束恢复请求信息向第一终端设备告知发生波束失败，第一终端设备可以激活预配置的候选波束的资源，并通过候选波束激活指示信息告知第二终端设备候选波束的资源已经被激活。之后第二终端设备可以接收第一终端设备激活该候选波束的资源时发送的参考信息，根据对接收质量的测量结果确定用于恢复的波束。
图6示出了本申请实施例提供的另一种波束管理方法的示意性流程图，如图6所示，该方法包括：
S510，第一终端设备使用多个波束发送第三参考信号。
对应地，多个终端设备使用多个波束接收该第三参考信号。
在S510之前，第一网络设备会向第一终端设备发送资源配置信息，该资源配置信息包括第一资源配置参数，第一资源配置参数中可以包括第一数量门限值，还可以包括第一周期、第一资源、或第一间隔。其中第一周期用于指示第三参考信号的发送周期，第一间隔用于指示同一发送周期内第三参考信号的发送间隔。第一资源用于指示第三参考信号的发送资源，第一数量门限值H1用于指示可用波束的数量门限值。其中，第三参考信号发 送周期指的是第三参考信号的发送周期，第三参考信号的发送间隔指的是在一个发送周期内第三参考信号之间的发送间隔，一个发送周期内每个第三参考信号通过第一终端设备的一个发送波束承载。该资源配置信息中还可以包括第一终端设备的标识。该资源配置参数可以是RRC配置、系统信息(system information block，SIB)配置或预配置信息。
S510中的多个波束可以为第一终端设备的全部波束，也可以是该全部波束中的部分波束。例如该部分波束可以为通过波束赋形获得的所有波束中处于一定角度范围内的波束；再如该部分波束可以为通过测量确定的波束赋形形成的所有波束中接收质量较好的波束。示意性的，该多个波束的数量可以为B1个，B1可以是根据网络设备配置的第一资源等因素确定的，例如当第一资源较多时，第一终端设备可以通过波束赋形形成更多的波束；当第一资源较少时，第一终端设备波束赋形形成的波束数量也较少。第三参考信号可以为SSB信号，第一终端设备发送第三参考信号时可以是周期性发送的，可以按照第一资源配置参数中的第一周期发送第三参考信号，并且使用第一资源发送该第三参考信号，也就是第三参考信号可以是周期性发送的。
该多个终端设备可以包括第二终端设备，也可以不包括第二终端设备。第一终端设备周围的其他终端设备可以进行周期性扫描，从而接收该第三参考信号。
S520，多个终端设备向第一终端设备发送第二反馈信息。
多个终端设备中的任意一个终端设备都可以使用波束赋形获得的多个波束通过波束扫描的方式接收该第三参考信号。第一终端设备使用多个波束发送第三参考信号时，还可以发送承载第三参考信号的波束的波束指示信息，多个终端设备中的任意一个终端设备可以按照一定的映射规则获得与该第三参考信号对应的反馈位置，该映射规则可以是和网络设备预先约定的或预配置的。多个终端设备可以对该第三参考信号进行测量，确定承载于第一终端设备的不同波束的第三参考信号的接收质量，接收质量可以包括L1或L3的RSRP、RSRQ、SINR等。在一些实施例中，该多个终端设备中的每一个终端设备可以向第一终端设备反馈接收质量高于预设阈值的波束(接收质量阈值)。在另一些实施例中，该多个终端设备中的每一个终端设备可以向第一终端设备反馈接收质量最高的波束。示例性的，第一终端设备通过波束赋形获得波束1(beam1)、波束2(beam2)和波束3(beam3)，多个终端设备中其中一个终端设备通过波束赋形获得波束4(beam4)、波束5(beam5)。在该终端设备接收第三参考信号时，可以对基于beam1-beam4、beam1-beam5、beam2-beam4、beam2-beam5、beam3-beam4、beam3-beam5的第三参考信号分别测量接收质量。假设承载于beam1-beam4、beam1-beam5和beam3-beam4的第三参考信号的接收质量大于预设阈值，且承载于beam1-beam5的第三参考信号接收质量最高。则该终端设备可以向第一终端设备反馈波束1和波束3；或者该终端设备可以仅向第一终端设备反馈波束1。
终端设备向第一终端设备反馈时可以通过显示的方式向第一终端设备反馈相应的波束，或者通过隐式的方式向第一终端设备反馈相应的波束。通过显示的方式反馈也就是通过直接在反馈信息中反馈波束ID、波束索引、波束接收资源等；通过隐式的方式反馈相应的波束是通过反馈的资源位置隐式指示对应的发送波束，示例性的，承载于波束1、波束2、波束3的第三参考信号的发送时隙分别为时隙1、时隙2和时隙3，对应的默认反馈时隙为时隙4、时隙5和时隙6，如果终端设备需要反馈波束1和波束2，则可以分别在时隙4和时隙5发送反馈信息。这样多个终端设备之中的任意一个终端设备会向第一终 端设备反馈至少一个波束，这些反馈指示第一终端设备的A1个波束，这意味着第一终端设备根据反馈信息确定的A1个波束中每一个波束至少对应一个终端设备(多个终端设备中的一个终端设备)。
在本申请实施例中，第二反馈信息可以理解为多个终端设备发送的反馈信息的集合，也就是多个终端设备中的每个终端设备都会向第一终端设备发送反馈信息，从而第一终端设备会根据这些反馈信息集合构成的第二反馈信息进行后续操作确定多个第一待选波束。
S530，第一终端设备根据A1和H1的数量关系，确定第一待选波束。
在S530中，第一终端设备可以根据多个终端设备发送的反馈信息确定A1个可用波束。可能存在两个或以上终端设备反馈相同的波束的情况。
第一终端设备可以将A1与第一数量门限值H1进行对比，并根据比较的结果确定后续发送DCR信息的波束。具体地，第一终端设备的物理层或MAC层根据A1和H1的数量关系，进行相应的操作。该H1可以是第一网络设备基于第一资源(影响第一终端设备的多个波束的数量B1)、第一周期等因素中的至少一项确定的小于B1的值。
当A1≥H1时，第一终端设备可以将A1个可用波束作为前文提及的多个第一待选波束。该判断过程可以由第一终端设备的物理层或MAC层实现。如果由物理层实现，则物理层会在确定A1≥H1后，将该数量A1或者A1个波束的指示信息上报给MAC层，以便于MAC层确定第一请求信息的重传次数(HARQ重传)，或者MAC层向高层指示第一待选波束数量，后续进行单播链接时可以由高层将第一请求信息(DCR信息)重复或重传相应的次数(PDCP重复或PC5-S重传)。进行如下操作从而完成第一终端设备和第二终端设备的单播连接，进一步的还可以进行细颗粒度波束配对：
S1，第一终端设备使用第一待选波束向第二终端设备重复发送第一请求信息。
对应，第二终端设备使用多个第二待选波束接收来自第一终端设备的第一请求信息。
在S1中，第一请求信息包括DCR信息，第一终端设备通过DCR信息触发与第二终端设备的连接。第一请求信息是第一终端设备使用HARQ重传、PDCP重复或者PC5-S重传基于不同方向的第一待选波束发送的，形成波束扫描。
S2，第二终端设备对第一请求信息进行测量，确定第二波束。
第二波束可以是第二待选波束中接收质量最高的波束或者接收质量满足第一门限值的波束。
S3，第二终端设备使用第二波束向第一终端设备发送第一反馈信息。
对应，第一终端设备使用第一待选波束接收来自第一终端设备的第一反馈信息。
在S3中，第一反馈信息中包括DCA信息，是对DCR信息的反馈。
S4，第一终端设备对第一反馈信息进行测量，确定第一波束。
可选的，S1中第一请求信息中包括第一待选波束的波束指示信息，S4中第一反馈信息中包括第二波束对应的承载第一请求信息的第一待选波束的指示信息，第一终端设备只要通过盲扫成功接收该第一反馈信息，即可以直接根据第一待选波束的指示信息，确定第一波束。
通过S1-S4，第一终端设备和第二终端设备可以完成单播连接，第一终端设备还可以通过下述步骤S4-S9进行细颗粒度波束配对。
S5，第一终端设备根据第一波束，使用多个第三待选波束向第二终端设备发送第一参 考信号。
对应，第二终端设备使用第二波束从第一终端设备接收基于多个第三待选波束发送的第一参考信号。
在S5之前，第一终端设备可以向第二终端设备发送PC5-RRC信息，对应，第二终端设备接收该PC5-RRC信息。
该PC5-RRC信息包括第一参考信号的发送资源、发送周期、发送间隔、反馈阈值、反馈资源等，还可以包括第二终端设备的ID。该PC5-RRC信息中包括的配置信息可以是来源于第一网络设备发送的RRC信息或SIB信息，也可以为预配置信息。
第一参考信号可以单独发送，也就是不随PSSCH发送，以第一参考信号为CSI-RS为例，PC5-RRC信息中可以包括第一参考信号的资源位置、发送周期等。
第一参考信号也可以随着周期性的PSSCH发送，例如随着周期性的padding包发送，第一终端设备可以通过SCI信息指示第一参考信号的发送资源位置以及反馈资源位置。
第一参考信号的资源可以是专门配置的资源，也可以是第一终端设备在预配置的资源集合选择的资源。
第二终端设备接收该PC5-RRC信息后可以向第一终端设备发送PC5-RRC完成信息，指示第二终端设备成功接收该PC5-RRC信息。
S6，第二终端设备对第一参考信号进行测量，并向第一终端设备发送测量报告。
对应，第一终端设备接收来自第二终端设备的测量报告。
S7，第一终端设备根据测量报告，确定第三波束。
第三波束是该多个第三待选波束之一，第一终端设备可以根据测量报告，将接收质量满足预设条件的第一参考信号对应的第三待选波束作为第三波束，例如，可以将接收质量满足门限值的波束作为第三波束，或者，可以将接收质量最好的发送波束作为第三波束。
S8，第一终端设备使用第三波束向第二终端设备发送第二参考信号。
对应，第二终端设备使用多个第四待选波束接收第二参考信号。
S9，第二终端设备对第二参考信号进行测量，并确定第四波束。
或者，第二终端设备在S5可以使用多个第四待选波束接收该第一参考信号，从而可以根据接收质量直接确定第四波束为最优波束，第二终端设备可以向第一终端设备发送测量报告，并反馈接收第一参考信号时第一终端设备的发送波束ID或发送资源以及对应的接收质量，第一终端设备可以根据该测量报告确定最优波束。第一终端设备和第二终端设备可以基于双方的最优波束建立波束配对关系。
上述S1-S9步骤的细节可以参考图3和图4的相关实施例的描述，此处不再赘述。
当A1＜H1时，第一终端设备和第二终端设备可以执行以下任意一项操作：
操作1：
获取第二资源配置参数，第二资源配置参数中可以包括第二数量门限值H2，还可以包括第二周期、第二间隔和第二资源。其中，第二周期小于第一周期和/或第二间隔小于第一间隔和/或第二资源少于第一资源。当第二周期小于第一周期或第二间隔小于第一间隔时，第一终端设备在按照S510-S530步骤获取可用波束时，可能可以获取到更多的可用波束数量A2从而使得A2≥H2。第一资源可以与第二资源大小相同，第一数量门限值和第二数量门限值也可以相同。可选的，第一资源和第二资源可以不同和/或第一数量门限值 和第二数量门限值可以不同。
当第二资源少于第一资源时，第一终端设备在使用第二资源配置参数进行波束赋形时，获得的波束数量更少，从而单个波束的宽度更宽，覆盖范围也更大，这时，第二数量门限值可以小于第一数量门限值，从而使得A2≥H2可能实现。
按照与S510-S530类似的步骤进行操作后，可以确定A2个可用波束后，比较A2和H2的大小，并根据A2和H2的大小确定是否需要获取第三资源配置参数，如果A2＜H2，第一终端设备会继续下一资源配置参数，直至获取第n资源配置参数后确认的An≥Hn。也就是说，第一终端设备在获取第一资源配置参数、第二资源配置参数……第n-1资源配置参数后确定的A1＜H1，A2＜H2……An-1＜Hn-1后，会继续获取第n资源配置参数，当第一终端设备获取第n资源配置参数后，按照与S510-S530类似的步骤进行操作后，可以确定An个可用波束，比较An和Hn的大小，若An≥Hn，可以按照上述S1-S4的步骤，将An个可用波束作为第一待选波束与第二终端设备进行单播连接，可选的，还可以继续按照S5-S9的步骤进一步进行细颗粒度配对。
通过上述方式，最终可以实现An≥Hn，这样通过第一终端设备的周围的终端设备的反馈信息使得没有其他终端设备位置的波束被剔除。避免了第一终端设备直接使用波束赋形获得的所有波束发送DCR信息使得单播连接过程延长，并且保留一定数量的波束便于单播连接时获取合适的波束。
第一终端设备可以通过两种方式获取下一资源配置参数。在一些实施例中，可以由第一终端设备在每次获取资源配置参数时向第一网络设备发送请求信息，从而第一网络设备在接收到该请求信息时可以向第一终端设备发送资源配置参数，并且网络设备该次发送的资源配置参数中需要满足一定的条件。也就是获取第m资源配置参数时的第m周期小于第m-1周期，和/或第m间隔小于第m-1间隔，和/或第m资源少于第m-1资源(第m-1周期、第m-1间隔、第m-1间隔分别为第m-1资源配置参数中指示的第三参考信号的发送周期，同一发送周期内的第三参考信号的间隔、第三参考信号的发送资源；第m周期、第m间隔、第m间隔分别为第m资源配置参数中指示的第三参考信号的发送周期，同一发送周期内的第三参考信号的发送间隔、第三参考信号的发送资源)，这样随时配置随时使用减小了预配置资源导致的浪费。第一终端设备向第一网络设备发送请求时需要处于RRC连接态，并且第一终端设备可以通过上报可用波束的数量从而请求第一网络设备下发下一资源配置参数。
在另一些实施例中，第一网络设备在向第一终端设备发送资源配置信息时，第一资源配置参数、第二资源配置参数…第n资源配置参数均是通过资源配置列表发送的，该资源配置列表是第一终端设备第一次发送第三参考信号之前发送给第一终端设备的。第一资源配置参数、第二资源配置参数…第n资源配置参数在资源配置列表中按一定规律排列，例如通过顺序或倒序等方式排列。从而第一终端设备在基于第m-1资源配置参数获得的可用波束数量Am-1小于第m-1数量门限值Hm-1时，直接从资源配置列表中获取第m资源配置参数，从而减小了第一终端设备和第一网络设备之间的信令交互。另外，由于第一网络设备通过资源配置信息将预配置的所有资源配置参数通过资源配置列表的形式一次性发送给第一终端设备，第一终端设备无需一定要处于RRC连接态，也可以处于RRC非连接态或位于无线接入网没有覆盖的区域。如果第一终端设备处于RRC非连接态该资源配置信 息可以通过系统信息(system information block，SIB)配置。如果第一终端设备处于没有无线网连接的区域，该资源配置列表可以是预配置的。
操作2：第一终端设备将全向波束作为第一待选波束，全向波束并非通过波束赋形而获得的波束，是没有方向性，或者指向空间所有方向的波束，第一终端设备可以按照以下步骤S11-S12与第二终端设备进行单播连接，可选的，还可以继续按照S13-S16进行细颗粒度波束配对。
S11，第一终端设备使用全向波束向第二终端设备发送第一请求信息。
对应，第二终端设备使用全向波束接收来自第一终端设备的第一请求信息。
在S11中，第一请求信息包括DCR信息，第一终端设备通过DCR信息触发与第二终端设备的连接。
S12，第二终端设备使用全向波束向第一终端设备发送第一反馈信息。
对应，第一终端设备使用全向波束接收来自第一终端设备的第一反馈信息。
在S12中，第一反馈信息中包括DCA信息，是对DCR信息的反馈。
在S11和S12中，第一终端设备和第二终端设备可以在FR1(frequency rang)或FR2上全向发送或接收DCR信息、DCA信息，从而建立单播连接，FR1对应的频率范围为450MHz-6000MHz，FR2对应的频率范围为24250MHz-52600MHz。
通过S11-S12，第一终端设备和第二终端设备可以完成单播连接。可选的，第一终端设备还可以通过下述步骤S13-S16进行细颗粒度波束配对。
S13，第一终端设备使用多个第三待选波束向第二终端设备发送第一参考信号。
对应，第二终端设备使用多个第四待选波束从第一终端设备接收基于多个第三待选波束发送的第一参考信号。
第一参考信号可以为SSB信号或者CSI-RS信号。
在S13之前，第一终端设备会向第二终端设备发送配置信息，可以通过PC5-RRC信息发送，该配置信息可以包括第一参考信号的发送资源、发送周期、反馈资源、第二终端设备的标识等。
该PC5-RRC信息包括第一参考信号的发送资源、发送周期、发送间隔、反馈阈值(用于指示反馈门限)、反馈资源等，还可以包括第二终端设备的ID。该PC5-RRC信息中包括的配置信息可以是来源于第一网络设备发送的RRC信息或SIB信息，也可以为预配置信息。
第一参考信号可以单独发送，也就是不随PSSCH发送，以第一参考信号为CSI-RS为例，PC5-RRC信息中可以包括CSI-RS set、资源位置、发送周期等。
第一参考信号也可以随着周期性的PSSCH发送，例如随着周期性的padding包发送，第一终端设备可以通过SCI信息指示第一参考信号的发送资源位置以及反馈资源位置。
第一参考信号的资源可以是专门配置的资源，也可以是第一终端设备在预配置的资源集合选择的资源。
第二终端设备接收该PC5-RRC信息后可以向第一终端设备发送PC5-RRC完成信息，指示第二终端设备成功接收该PC5-RRC信息。
该配置资源可以单独发送或者随着PSSCH发送，也就是与数据一起发送。
S14，第二终端设备对第一参考信号进行测量，确定第四波束。
第二终端设备在接收该参考信号时，可以对该第一参考信号进行测量，并根据测量结果确定最优波束(第四波束)。
S15，第二终端设备向第一终端设备发送第一参考信号的测量报告。
对应，第一终端设备接收来自第二终端设备的测量报告。
S16，第一终端设备根据测量报告，确定第三波束。
第三波束是该多个第三待选波束之一，第一终端设备可以根据测量报告，将接收质量满足预设条件的第一参考信号对应的第三待选波束作为第三波束，例如，可以将接收质量满足门限值的波束作为第三波束，或者，可以将接收质量最好的发送波束作为第三波束。
这样，当A1＜H1时，第一终端设备使用全向波束发送DCR信息与第二终端设备进行单播连接，由于全向波束覆盖所有方向或空间，能够提高单播连接的成功率，避免确定的可用波束过少使得单播连接失败。
使用全向波束可发送DCR信息时，该DCR信息可以覆盖周围所有空间。
操作3：第一终端设备将S510中的多个波束作为第一待选波束，与第二终端设备按照步骤S1-S4与第二终端设备进行单播连接，可选的，还可以继续按照S5-S9进行细颗粒度波束配对。
这样，当A1＜H1时，第一终端设备使用发送第三参考信号的所有波束发送DCR信息与第二终端设备进行单播连接，避免确定的可用波束较少使得单播连接失败。
该判断A1＜H1或An＜Hn的过程可以由物理层或MAC层完成，之后确定使用B1或Bn个波束或者全向波束发送第一请求信息(DCR信息)。如果由物理层完成，可以由第一终端设备物理层将该B1或Bn上报给MAC层，或者上报发送第一请求信息(DCR信息)的波束为B1或Bn个波束，以便于MAC层确定第一请求信息的重传次数(HARQ重传)，或者MAC层向高层指示第一待选波束数量，后续进行单播链接时可以由高层将第一请求信息(DCR信息)重复或重传相应的次数(PDCP重复或PC5-S重传)。如果物理层确定使用全向波束发送第一请求信息，可以向MAC层上报使用全向波束发送该第一请求信息，进一步，还可以由MAC层向高层上报使用全向波束发送第一请求信息。
应理解，操作2和操作3无需一定在A1＜H1时才能实施，例如可以在第一终端设备获取超过预设阈值的资源配置参数后即使用全向波束或者S510中的多个波束发送DCR信息与第二终端设备进行单播连接。示例性的，第一网络设备和第一终端设备可以约定第一终端设备在获取三次资源配置参数之后，如果A3＜H3，则可以之后使用全向波束或者S510的多个波束向第二终端设备发送DCR信息进行单播链接。或者，如果第一终端设备用完第一网络设备给第一终端设备发送的资源配置参数列表中所有资源配置参数之后，可以直接进行操作2或操作3。
还应理解，上文虽然描述了第一终端设备根据第一资源配置参数，确定第一待选波束(或根据第n资源配置参数，确定第一待选波束)。但是在实际情况中，第一终端设备不一定有确定的步骤，而是直接根据判断的结果使用An个波束或使用Bn个波束或使用全向波束向需要建立链接的第二终端设备发送第一请求信息建立单播连接。
另外，上文介绍的通过第一终端设备发送第三参考信号从而获取可用波束，并通过比较可用波束的数量与资源配置参数中的数量门限值(第N数量门限值)大小进一步确定与第二终端设备进行单播连接所使用的波束之外。第一终端设备还可以通过以下方式确定可 用波束：
S21，第一终端设备使用波束赋形形成的多个波束接收多个终端设备发送的SSB信号。
S22，第一终端设备根据SSB信号的接收质量确定可用波束。
假设第一终端设备接收SSB信号使用的波束数量为B1，确定的可用波束数量为A1，则第一终端设备可以和网络设备约定当可用波束数量大于或等于预设阈值时，可以使用该可用波束发送DCR信息与第一终端设备进行单播连接；或者第一终端设备可以和网络设备约定当可用波束数量A1与接收SSB信号使用的波束数量B1的比值大于或等于预设阈值时，可以使用该可用波束发送DCR信息与第一终端设备进行单播连接。
A1小于预设阈值或A1/B1小于预设阈值时，第一终端设备可以直接使用全向波束或者接收SSB信号的所有波束向第二终端设备发送DCR信息进行单播连接。
图7示出了本申请实施例提供的一种波束管理方法示意性流程图，用于实现图3和图4的技术方案。
S602，第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息。
对应，第二终端设备使用多个第二待选波束接收来自第一终端设备的第一请求信息。
在S602中，第一请求信息包括DCR信息，第一终端设备通过DCR信息触发与第二终端设备的连接。第一请求信息是第一终端设备使用HARQ重传、PDCP重复或者PC5-S重传基于不同方向的第一待选波束发送的，形成波束扫描。
在S602之前，第一终端设备可以通过图6的S510-S530获取该多个待选波束，具体细节可以参考图6的相应描述，此处不再赘述。
可选的，如果按照图6的S510-S530步骤，将全向波束作为后续单播连接使用的波束，则S602变成：第一终端设备使用全向波束向第二终端设备发送第一请求信息。后续S603、S608步骤对应去除，S610-S624的步骤中第一终端设备不是在第一波束的基础上而是在全向波束的基础上进行细颗粒度波束配对，此处不再赘述。
S603，第一终端设备向第二终端设备发送第一待选波束的数目。
对应，第二终端设备接收来自第一终端设备的第一待选波束的数目。
S604，第二终端设备对第一请求信息进行测量，确定第二波束。
第二波束可以是第二待选波束中接收质量最高的波束或者接收质量满足第一门限值的波束。
S606，第二终端设备使用第二波束向第一终端设备发送第一反馈信息。
对应，第一终端设备使用多个第一待选波束接收来自第一终端设备的第一反馈信息。
在S606中，第一反馈信息中包括DCA信息，是对DCR信息的反馈。
S608，第一终端设备对第一反馈信息进行测量，确定第一波束。
可选的，S602中第一请求信息中包括第一待选波束的波束指示信息，S606中第一反馈信息中包括第二波束对应的承载第一请求信息的第一待选波束的指示信息，第一终端设备只要通过盲扫成功接收该第一反馈信息，即可以直接根据第一待选波束的指示信息，确定第一波束。
S610，第一网络设备向第一终端设备发送资源配置参数。
资源配置参数可以包括多个CSI-RS参考信号相对于资源指示信息的相对发送时域位置和反馈时域位置。
资源配置参数可以是基于第一终端设备的请求而发送。
S611，如果没有发送资源，第一终端设备从第一网络设备或解调其他侧行链路的SCI信息获取用于多个CSI-RS参考信号的时频或空间资源。
S612，第一终端设备向第二终端设备发送相对资源指示信息，包括多个CSI-RS参考信号的发送时域位置和反馈时域位置。
S614，第一终端设备向第二终端设备发送资源指示信息，指示多个CSI-RS参考信号的接收时频或空间资源。
S616，第一终端设备使用多个第三待选波束向第二终端设备发送多个CSI-RS参考信号。
对应，第二终端设备根据相对资源指示信息，在资源指示信息后的发送时域位置接收多个CSI-RS参考信号.
S618，第二终端设备向第一终端设备发送CSI-RS测量报告。
对应，第一终端设备接收CSI-RS测量报告。
该测量包括用于指示第三待选波束的波束指示信息和对应的接收质量。
S620第一终端设备根据CSI-RS测量报告，从第三待选波束中确定第三波束。
S622，第一终端设备使用第三波束向第二终端设备发送CSI-RS信号。
对应，第二终端设备使用多个第四待选波束接收CSI-RS信号。
S624，第二终端设备根据接收质量，从多个第四待选波束确定第四波束。
图8示出了本申请实施例提供的一种侧行链路管理装置的示意性框图。
在一些实施例中，该装置包括：收发单元710，用于使用多个第一待选波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接；所述收发单元710，还用于使用多个第一待选波束从所述第二终端设备接收第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈；处理单元720，所述处理单元720用于根据所述第一反馈信息，确定第一波束，所述第一波束是所述多个第一待选波束之一。
在本申请实施例中，该装置的收发单元710使用多个不同方向的第一待选波束向第二终端设备重复发送第一请求信息，从而触发与第二终端设备的连接，并通过第一请求信息使得第二终端设备确定接收质量较好的波束，接收第二终端设备发送的第一反馈信息，处理单元720根据第一反馈信息从第一待选波束中确定第一波束，使得第一终端设备和第二终端设备可以获得通信质量良好的收发波束，提高侧行链路的通信质量。
可选的，所述处理单元720具体用于执行以下操作之一：通过HARQ使用多个第一待选波束向第二终端设备重复发送第一请求信息；通过PDCP使用多个第一待选波束向第二终端设备重复发送第一请求信息；通过PC5-S层使用多个第一待选波束向第二终端设备重复发送第一请求信息。
可选的，所述收发单元710还用于：向所述第二终端设备发送所述多个第一待选波束的数目。
可选的，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括所述第一波束的指示信息。
可选的，所述第一波束对应的第一反馈信息的接收质量大于第一门限值。
可选的，所述第一波束对应的第一反馈信息的接收质量是所述多个第一待选波束对应 的第一反馈信息的接收质量中最高的。
可选的，所述收发单元710还用于：向所述第二终端设备发送资源指示信息，所述资源指示信息用于指示所述第一参考信号的专用资源。
可选的，所述收发单元710还用于：根据所述第一波束，基于所述专用资源使用多个第三待选波束向所述第二终端设备发送第一参考信号；接收来自所述第二终端设备的测量报告；其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
可选的，所述处理单元720，还用于根据所述测量报告，确定第三波束，所述第三波束是所述多个第三待选波束之一。
可选的，所述收发单元720还用于：获取所述多个第一待选波束。
可选的，所述收发单元720，具体用于：获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值Hn，n为正整数；根据所述第n资源配置参数，使用Bn个波束发送第三参考信号；接收来自多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；根据所述An和Hn的数量关系，确定所述多个第一待选波束。
可选的，所述收发单元720，具体用于：在所述An≥Hn时，将所述An个波束确定为所述多个第一待选波束。
可选的，所述收发单元720，具体用于：在所述An＜Hn时，将所述Bn个波束确定为所述多个第一待选波束。
可选的，所述收发单元720，具体用于：在所述An＜Hn时，所述第一终端设备获取第n+1资源配置参数，根据所述第n+1资源配置参数确定所述多个第一待选波束，所述第n资源配置参数包括第n周期和/或第n资源，所述第n+1资源配置参数包括第n+1周期和/或第n+1资源，所述第n+1资源配置参数满足以下至少一项：所述第n+1周期小于所述第n周期；所述第n+1资源少于所述第n资源。
可选的，所述第一终端设备获取所述第n+1资源配置参数包括：在所述An＜Hn时，所述第一终端设备向第一网络设备发送请求信息，所述请求信息用于获取所述第n+1资源配置参数；或者，所述第一终端设备根据资源配置列表，获取所述第n+1资源配置参数，所述资源配置列表是所述第一终端设备获取第一资源配置参数时从所述第一网络设备接收的，所述资源配置列表包括所述第n资源配置参数和所述第n+1资源配置参数。
可选的，所述多个终端设备包括所述第二终端设备。
在另一些实施例中，该装置包括：收发单元710，用于使用多个第二待选波束从第一终端设备接收第一请求信息，所述第一请求信息用于与所述第一终端设备进行连接；处理单元720，用于根据所述第一请求信息，确定第二波束，所述第二波束是所述多个第二待选波束之一；所述收发单元710，还用于使用所述第二波束向所述第一终端设备发送第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈。
收发单元710使用多个第二待选波束从第一终端设备接收第一请求信息，处理单元720根据第一请求信息，对第一请求信息进行测量，从而确定第二波束。收发单元710向第一终端设备发送第一反馈信息，从而第一终端设备可以同样依据该第一反馈信息，确定接收质量较好的波束，提高侧行链路的通信质量。
可选的，所述第一请求信息是所述第一终端设备通过多个第一待选波束发送的，所述 收发单元710还用于：从所述第一终端设备接收所述多个第一待选波束的数目；其中，所述使用多个第二待选波束从第一终端设备接收第一请求信息，包括：根据所述多个第一待选波束的数目，使用多个第二待选波束从第一终端设备接收基于所述多个第一待选波束的第一请求信息。
可选的，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括第一波束的指示信息，所述第一波束是所述多个第一待选波束之一。
可选的，所述第二波束对应的第一请求信息的接收质量大于第二门限值。
可选的，所述第二波束对应的第一请求信息的接收质量是所述多个第二待选波束对应的第一请求信息的接收质量中最高的。
可选的，所述收发单元710还用于：从所述第一终端设备接收资源指示信息，所述资源指示信息用于指示专用资源。
可选的，所述装置收发单元710，还用于：根据所述专用资源，使用所述第二波束从所述第一终端设备接收基于多个第三待选波束发送的第一参考信号；向所述第一终端设备发送测量报告；其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
可选的，所述收发单元710，还用于：接收承载于所述第一终端设备的Bn个波束的第三参考信号，所述Bn个波束是所述第一终端设备根据第n资源配置参数确定的；向所述第一终端设备发送反馈信息，所述反馈信息用于指示所述Bn个波束中接收质量大于或等于接收质量阈值的波束，所述多个第一待选波束包括所述接收质量大于或等于接收质量阈值的波束。
图9示出了本申请实施例提供的一种装置的示意性框图。
图9所示的装置800可对应于前文描述的装置，具体地，装置800可以是图1中的第一终端设备或第二终端设备具体的例子。装置800包括：处理器820。在本申请的实施例中，处理器820用于实现相应的控制管理操作，例如，处理器820用于支持装置执行前述实施例中如图3、图4、图5、图6所示的方法或操作或功能。可选的，装置800还可以包括：存储器810和通信接口830；处理器820、通信接口830以及存储器810可以相互连接或者通过总线840相互连接。其中，通信接口830用于支持该装置进行通信，存储器810用于存储装置的程序代码和数据。处理器820调用存储器810中存储的代码或者数据实现相应的操作。该存储器810可以跟处理器耦合在一起，也可以不耦合在一起。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。
其中，处理器820可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。通信接口830可以是收发器、电路、总线、模块或其它类型的通信接口。总线840可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。 所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图9中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (40)

  1. 一种侧行链路管理方法，其特征在于，包括：
    第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接；
    所述第一终端设备使用所述多个第一待选波束从所述第二终端设备接收第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈；
    所述第一终端设备根据所述第一反馈信息，确定第一波束，所述第一波束是所述多个第一待选波束之一。
  2. 根据权利要求1所述的方法，其特征在于，所述第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息，包括以下操作之一：
    第一终端设备通过混合自动重传请求(hybrid automatic repeat request，HARQ)使用多个第一待选波束向第二终端设备重复发送第一请求信息；
    第一终端设备通过分组数据汇聚协议(packet data convergence protocol，PDCP)使用多个第一待选波束向第二终端设备重复发送第一请求信息；
    第一终端设备通过PC5信令协议层(PC5-signal，PC5-S)使用多个第一待选波束向第二终端设备重复发送第一请求信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备向所述第二终端设备发送所述多个第一待选波束的数目。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括所述第一波束的指示信息。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述第一波束对应的第一反馈信息的接收质量大于第一门限值。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第一波束对应的第一反馈信息的接收质量是所述多个第一待选波束对应的第一反馈信息的接收质量中最高的。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备向所述第二终端设备发送资源指示信息，所述资源指示信息用于指示专用资源。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备根据所述第一波束，基于所述专用资源使用多个第三待选波束向所述第二终端设备发送第一参考信号；
    所述第一终端设备接收来自所述第二终端设备的测量报告；
    其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，在第一终端设备使用多个第一待选波束向第二终端设备重复发送第一请求信息之前，所述方法还包括：
    所述第一终端设备获取所述多个第一待选波束。
  10. 根据权利要求9所述的方法，其特征在于，所述第一终端设备获取所述多个第一待选波束包括：
    所述第一终端设备获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值Hn，n为正整数；
    所述第一终端设备根据所述第n资源配置参数，使用Bn个波束发送第三参考信号；
    所述第一终端设备接收来自多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；
    所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束。
  11. 根据权利要求10所述的方法，其特征在于，所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束，包括：
    在所述An≥Hn时，将所述An个波束确定为所述多个第一待选波束。
  12. 根据权利要求10所述的方法，其特征在于，所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束，包括：
    在所述An＜Hn时，将所述Bn个波束确定为所述多个第一待选波束。
  13. 根据权利要求10所述的方法，其特征在于，所述第一终端设备根据所述An和Hn的数量关系，确定所述多个第一待选波束，包括：
    在所述An＜Hn时，所述第一终端设备获取第n+1资源配置参数，根据所述第n+1资源配置参数确定所述多个第一待选波束，所述第n资源配置参数包括第n周期、第n间隔和第n资源，所述第n+1资源配置参数包括第n+1周期、第n+1间隔和第n+1资源，所述第n周期、所述第n间隔、所述第n资源分别为所述第n资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1周期、所述第n+1间隔、所述第n+1资源分别为所述第n+1资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1资源配置参数满足以下至少一项：
    所述第n+1周期小于所述第n周期；
    所述第n+1间隔小于所述第n间隔
    所述第n+1资源少于所述第n资源。
  14. 根据权利要求13所述的方法，其特征在于，所述第一终端设备获取所述第n+1资源配置参数包括：
    在所述An＜Hn时，所述第一终端设备向第一网络设备发送请求信息，所述请求信息用于获取所述第n+1资源配置参数；所述第一终端设备从所述第一网络设备接收所述第n+1资源配置参数；或者，
    所述第一终端设备根据从所述第一网络设备接收的资源配置列表，获取所述第n+1资源配置参数，所述资源配置列表包括所述第n资源配置参数和所述第n+1资源配置参数。
  15. 根据权利要求10至14中任一项所述的方法，其特征在于，所述多个终端设备包括所述第二终端设备。
  16. 一种侧行链路管理方法，其特征在于，包括：
    第一终端设备获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值 Hn；
    所述第一终端设备根据所述第n资源配置参数，使用Bn个波束向多个终端设备发送第三参考信号；
    所述第一终端设备接收来自所述多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；
    所述第一终端设备根据所述第二反馈信息确定An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；
    在所述An＜Hn时，所述第一终端设备使用全向波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接。
  17. 一种侧行链路管理方法，其特征在于，包括：
    第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息，所述第一请求信息用于所述第一终端设备触发与所述第二终端设备的连接；
    所述第二终端设备根据所述第一请求信息，确定第二波束，所述第二波束是所述多个第二待选波束之一；
    所述第二终端设备使用所述第二波束向所述第一终端设备发送第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈。
  18. 根据权利要求17所述的方法，其特征在于，所述第一请求信息是所述第一终端设备通过多个第一待选波束发送的，所述方法还包括：
    所述第二终端设备从所述第一终端设备接收所述多个第一待选波束的数目；
    其中，所述第二终端设备使用多个第二待选波束从第一终端设备接收第一请求信息，包括：
    所述第二终端设备根据所述多个第一待选波束的数目，使用多个第二待选波束从第一终端设备接收基于所述多个第一待选波束的第一请求信息。
  19. 根据权利要求17或18所述的方法，其特征在于，所述第一请求信息还包括承载所述第一请求信息的所述第一待选波束的指示信息，所述第一反馈信息还包括所述第一波束的指示信息，所述第一波束是所述多个第一待选波束之一。
  20. 根据权利要求17至19中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备从所述第一终端设备接收资源指示信息，所述资源指示信息用于指示专用资源。
  21. 根据权利要求20所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备根据所述专用资源，使用所述第二波束从所述第一终端设备接收基于多个第三待选波束发送的第一参考信号；
    所述第二终端设备向所述第一终端设备发送测量报告；
    其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
  22. 一种侧行链路管理装置，其特征在于，包括：
    收发单元，用于使用多个第一待选波束向第二终端设备重复发送第一请求信息，所述第一请求信息用于触发与所述第二终端设备的连接；
    所述收发单元，还用于使用多个第一待选波束从所述第二终端设备接收第一反馈信息， 所述第一反馈信息用于对所述第一请求信息进行反馈；
    处理单元，所述处理单元用于根据所述第一反馈信息，确定第一波束，所述第一波束是所述多个第一待选波束之一。
  23. 根据权利要求22所述的装置，其特征在于，所述处理单元具体用于执行以下操作之一：
    通过混合自动重传请求(hybrid automatic repeat request，HARQ)使用多个第一待选波束向第二终端设备重复发送第一请求信息；
    通过分组数据汇聚协议(packet data convergence protocol，PDCP)使用多个第一待选波束向第二终端设备重复发送第一请求信息；
    通过PC5信令协议层(PC5-signal，PC5-S)使用多个第一待选波束向第二终端设备重复发送第一请求信息。
  24. 根据权利要求22或23所述的装置，其特征在于，所述收发单元还用于：
    向所述第二终端设备发送资源指示信息，所述资源指示信息用于指示专用资源。
  25. 根据权利要求24的装置，其特征在于，所述收发单元还用于：
    根据所述第一波束，基于所述专用资源使用多个第三待选波束向所述第二终端设备发送第一参考信号；
    接收来自所述第二终端设备的测量报告；
    其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
  26. 根据权利要求22至25中任一项所述的装置，其特征在于，所述处理单元还用于：
    获取所述多个第一待选波束。
  27. 根据权利要求26所述的装置，其特征在于，所述处理单元，具体用于：
    获取第n资源配置参数，所述第n资源配置参数包括第n数量门限值Hn，n为正整数；
    根据所述第n资源配置参数，使用Bn个波束发送第三参考信号；
    接收来自多个终端设备的第二反馈信息，所述第二反馈信息用于指示An个波束，所述An个波束属于所述Bn个波束，所述An个波束的接收质量大于或等于接收质量阈值；
    根据所述An和Hn的数量关系，确定所述多个第一待选波束。
  28. 根据权利要求27所述的装置，其特征在于，所述处理单元，具体用于：
    在所述An≥Hn时，将所述An个波束确定为所述多个第一待选波束。
  29. 根据权利要求27所述的装置，其特征在于，所述处理单元，具体用于：
    在所述An＜Hn时，将所述Bn个波束确定为所述多个第一待选波束。
  30. 根据权利要求27所述的装置，其特征在于，所述处理单元，具体用于：
    在所述An＜Hn时，所述第一终端设备获取第n+1资源配置参数，根据所述第n+1资源配置参数确定所述多个第一待选波束，所述第n资源配置参数包括第n周期、第n间隔、第n资源中的至少一项，所述第n+1资源配置参数包括第n+1周期、第n+1间隔、第n+1资源中的至少一项，所述第n周期、所述第n间隔、所述第n资源分别为所述第n资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1周期、所述第n+1间隔、所述第n+1资源分别为所述第n+1资源配置参数中配置的所述第三参考信号的发送周期、一个发送周期内所述第三参考信号的发送间隔、所述第三参考信号的发送资源，所述第n+1资源配置 参数满足以下至少一项：
    所述第n+1周期小于所述第n周期；
    所述第n+1间隔小于所述第n间隔；
    所述第n+1资源少于所述第n资源。
  31. 根据权利要求30所述的装置，其特征在于，所述处理单元，具体用于：
    在所述An＜Hn时，向第一网络设备发送请求信息，所述请求信息用于获取所述第n+1资源配置参数；从所述第一网络设备接收所述第n+1资源配置参数；或者，
    根据从所述第一网络设备接收的资源配置列表，获取所述第n+1资源配置参数，所述资源配置列表是所述第一终端设备获取第一资源配置参数时从所述第一网络设备接收的，所述资源配置列表包括所述第n资源配置参数和所述第n+1资源配置参数。
  32. 根据权利要求27至31中任一项所述的装置，其特征在于，所述多个终端设备包括所述第二终端设备。
  33. 一种侧行链路管理装置，其特征在于，包括：
    收发单元，用于使用多个第二待选波束从第一终端设备接收第一请求信息，所述第一请求信息用于所述第一终端设备触发与所述装置的连接；
    处理单元，用于根据所述第一请求信息，确定第二波束，所述第二波束是所述多个第二待选波束之一；
    所述收发单元，还用于使用所述第二波束向所述第一终端设备发送第一反馈信息，所述第一反馈信息用于对所述第一请求信息进行反馈。
  34. 根据权利要求33所述的装置，其特征在于，所述收发单元还用于：
    从所述第一终端设备接收资源指示信息，所述资源指示信息用于指示专用资源。
  35. 根据权利要求34的装置，其特征在于，所述装置收发单元，还用于：
    根据所述专用资源，使用所述第二波束从所述第一终端设备接收基于多个第三待选波束发送的第一参考信号；
    向所述第一终端设备发送测量报告；
    其中，所述测量报告用于指示所述第一参考信号的接收质量和对应的第三待选波束。
  36. 一种通信装置，其特征在于，包括：
    处理器和通信接口，所述通信接口用于接收来自所述通信装置之外的其他通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其他通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至15中任一项或16或17至21中任一项所述的方法。
  37. 一种通信系统，其特征在于，包括：
    如权利要求22至32中任一项所述的装置；和/或，
    如权利要求33至35中任一项所述的装置。
  38. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的终端设备执行如权利要求1至15中任意一项所述的方法，和/或使得安装有所述芯片的终端设备执行如权利要求16所述的方法，和/或使得安装有所述芯片的终端设备执行如权利要求17至21中任意一项所述的方法。
  39. 一种计算机可读存储介质，其特征在于，
    所述计算机可读存储介质上存储有计算机程序，当所述计算机程序运行时，使得所述计算机执行如权利要求1至15中任一项所述的方法；或者使得所述计算机执行如权利要求16所述的方法；或者使得所述计算机执行如权利要求17至21中任一项所述的方法。
  40. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，实现如权利要求1至15中任一项所述的方法，或实现如权利要求16所述的方法，或实现如权利要求17至21中任一项所述的方法。
PCT/CN2023/076626 2022-02-28 2023-02-16 侧行链路管理方法、装置和系统 WO2023160461A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210188443.2 2022-02-28
CN202210188443.2A CN116709268A (zh) 2022-02-28 2022-02-28 侧行链路管理方法、装置和系统

Publications (1)

Publication Number Publication Date
WO2023160461A1 true WO2023160461A1 (zh) 2023-08-31

Family

ID=87764690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/076626 WO2023160461A1 (zh) 2022-02-28 2023-02-16 侧行链路管理方法、装置和系统

Country Status (2)

Country Link
CN (1) CN116709268A (zh)
WO (1) WO2023160461A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117730605A (zh) * 2023-10-30 2024-03-19 上海移远通信技术股份有限公司 用于侧行通信的方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200045664A1 (en) * 2018-08-06 2020-02-06 Hyundai Motor Company Method for sidelink communication based on beamforming in communication system
CN110971281A (zh) * 2018-09-28 2020-04-07 电信科学技术研究院有限公司 一种波束扫描方法、波束配置方法、终端及网络设备
WO2021086004A1 (ko) * 2019-10-30 2021-05-06 엘지전자 주식회사 사이드링크를 지원하는 무선통신시스템에서 단말이 빔 관리 동작을 수행하는 방법 및 이를 위한 장치
WO2022018688A1 (en) * 2020-07-22 2022-01-27 Lenovo (Singapore) Pte. Ltd. Multiple sidelink reference signals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200045664A1 (en) * 2018-08-06 2020-02-06 Hyundai Motor Company Method for sidelink communication based on beamforming in communication system
CN110971281A (zh) * 2018-09-28 2020-04-07 电信科学技术研究院有限公司 一种波束扫描方法、波束配置方法、终端及网络设备
WO2021086004A1 (ko) * 2019-10-30 2021-05-06 엘지전자 주식회사 사이드링크를 지원하는 무선통신시스템에서 단말이 빔 관리 동작을 수행하는 방법 및 이를 위한 장치
WO2022018688A1 (en) * 2020-07-22 2022-01-27 Lenovo (Singapore) Pte. Ltd. Multiple sidelink reference signals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TOYOTA INFOTECHNOLOGY CENTER: "Discussion on beam management for NR-V2X sidelink in millimeter- wave bands", 3GPP DRAFT; R1-1809039 BEAM MANAGEMENT FOR NR-V2X SIDELINK, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Gothenburg, Sweden; 20180820 - 20180824, 11 August 2018 (2018-08-11), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051516411 *

Also Published As

Publication number Publication date
CN116709268A (zh) 2023-09-05

Similar Documents

Publication Publication Date Title
CN110891314B (zh) 一种通信方法、资源分配方法及装置
WO2021008056A1 (zh) 用于传输侧行数据的方法、终端设备和网络设备
US8358606B2 (en) Method and apparatus for processing multicast frame
US11082965B2 (en) Resource allocation method and relevant device
WO2021134796A1 (zh) 无线通信的方法和终端设备
WO2020177218A1 (zh) 传输侧行链路数据的方法和终端设备
WO2019214301A1 (zh) 通信方法和设备
WO2020056696A1 (zh) 一种资源分配方法及装置、终端
WO2020221225A1 (zh) 通信方法和装置
CN113596782B (zh) 一种数据传输方法及通信装置
US20230209518A1 (en) Communication method and apparatus
WO2023160461A1 (zh) 侧行链路管理方法、装置和系统
WO2021203392A1 (zh) 边链路传输方法以及装置
WO2021062855A1 (zh) 一种通信方法及装置
WO2021082004A1 (zh) 无线通信的方法和装置
WO2023042621A1 (ja) アクセスポイント装置、通信方法、通信システム、及び、プログラム
US20210258961A1 (en) Data transmission method and device
WO2022077473A1 (zh) 无线通信方法、终端设备和网络设备
WO2021056366A1 (zh) 信息传输方法及装置
WO2019127155A1 (zh) 一种信息反馈方法及装置、计算机存储介质
WO2023160352A1 (zh) 波束失败恢复方法、装置和系统
WO2022027426A1 (zh) 资源上报和资源选择方法以及装置
WO2024169584A1 (zh) 一种通信方法及相关设备
WO2023151391A1 (zh) 波束训练方法及通信装置
WO2024207956A1 (zh) 通信方法和通信装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23759086

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023759086

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2023759086

Country of ref document: EP

Effective date: 20240902