WO2024032514A1 - Procédé d'acheminement de signaux et appareil associé - Google Patents

Procédé d'acheminement de signaux et appareil associé Download PDF

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Publication number
WO2024032514A1
WO2024032514A1 PCT/CN2023/111329 CN2023111329W WO2024032514A1 WO 2024032514 A1 WO2024032514 A1 WO 2024032514A1 CN 2023111329 W CN2023111329 W CN 2023111329W WO 2024032514 A1 WO2024032514 A1 WO 2024032514A1
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Prior art keywords
signal
signals
relay
network device
relay device
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PCT/CN2023/111329
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English (en)
Chinese (zh)
Inventor
颜矛
宋兴华
刘凤威
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华为技术有限公司
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Publication of WO2024032514A1 publication Critical patent/WO2024032514A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

Definitions

  • the present application relates to the field of wireless communications, and in particular, to methods and related devices for signal forwarding.
  • Beam forming technology is used to limit the energy of the transmitted signal within a certain beam direction, thereby increasing signal reception efficiency, expanding the transmission range of wireless signals, and reducing signal interference, thereby achieving higher communication efficiency and obtaining higher network capacity.
  • one of the network equipment and the terminal equipment can send a reference signal for the other party to measure, thereby obtaining a better quality beam.
  • the distance between network equipment and terminal equipment is relatively long, and the corresponding path loss is high, resulting in a decrease in communication quality, and even causing the terminal equipment to be unable to communicate directly with the network equipment.
  • One known approach is to use relay devices to assist communication between network devices and end devices. For example, in downlink transmission, the relay device can amplify the signal received from the network device and forward it to the terminal device; in uplink transmission, the relay device can amplify the signal received from the terminal device and forward it to the network device.
  • the relay equipment In a communication system that introduces relay equipment, the relay equipment needs to determine a beam with better quality from the transmitted beam, and then amplify and forward it. This requires receiving a sufficient number of reference signals from the transmitter for beam measurements. In order to meet the coverage requirements of the relay device, the transmitter may need to send additional reference signals for use by the relay device, which causes the overhead of the reference signal to increase as the number of relay devices increases.
  • This application provides a method and related devices for signal forwarding, in order to reduce the overhead of network equipment.
  • the first aspect provides a method for signal forwarding.
  • the method can be applied to a relay device, for example, it can be performed by the relay device, or it can also be performed by a component (such as a chip, a chip) configured in the relay device. system, etc.), or it can also be implemented by a logic module or software that can realize all or part of the functions of the relay device, which is not limited in this application.
  • the method includes: receiving first indication information from a network device, the first indication information being used to indicate a threshold value of signal reception quality, and the threshold value being used to determine a signal for which measurement results need to be reported; Measurement is performed based on the received signal to generate a measurement result of at least one signal.
  • the at least one signal is a signal among the received signals whose reception quality reaches the threshold value.
  • the at least one signal has a
  • the measurement results include one or more of the following: the identity of the first signal, the identity of the network device side beam used to send the first signal, and the relay backhaul side of the beam used to receive the first signal.
  • the first signal is any one of the at least one signal; sending the The measurement result of the at least one signal is used to determine the beam of the backhaul link, and the beam of the backhaul link includes: the relay backhaul side beam and/or the network device side beam.
  • the threshold value is a threshold value of signal quality
  • the signal is a signal that can be forwarded by the relay device, or a signal recommended by the relay device for forwarding, which can be called a forwarded signal.
  • the signal quality may refer to the quality of the forwarded signal.
  • the quality of the forwarded signal can be the quality of the signal received by the relay device when the relay device receives, amplifies and/or performs other signal processing and forwarding on the forwarding link.
  • the relay device can determine the signal for which the measurement result needs to be reported.
  • the measurement result of at least one signal reported by the relay device may be the measurement result of all signals whose reception quality reaches the threshold value among the signals received by the relay device.
  • the measurement result may also be the measurement result of a part of the signal received by the relay device whose reception quality reaches the threshold value, which is not limited in this application.
  • the measurement of the at least one signal may be used to determine the beam of the backhaul link.
  • the backhaul link is the link between the network device and the relay device.
  • the beams of the backhaul link include beams on the relay backhaul side and network equipment side beams.
  • the network device can send signals through the beam of the backhaul link, and the relay device can receive the signal through the beam of the backhaul link.
  • the beam on the network equipment side is the transmitting beam
  • the beam on the relay return side is the receiving beam.
  • the network device can determine the network device side beam and/or the relay backhaul side beam used for the next signal transmission based on the measurement result of at least one signal reported by the relay device, therefore, at least one of the beams determined by the threshold value
  • the measurement results of the signal may have an impact on the next signal or beam sent by the network device. For example, if the at least one signal includes the first signal, the next time the network device sends a signal, it can continue to send the first signal, or send the signal based on the beam direction of the first signal, or use the same beam direction as the first signal. The beam direction is closer to the beam to send the signal, and so on.
  • the relay device can report the measurement results of the received signals whose signal quality reaches the threshold value, and the network device can adjust the next time based on the received measurement results.
  • the beam direction of the transmitted signal enables the signal sent by the network device to have more signals to meet the forwarding needs of the relay device. In this way, the number of additional signals configured by the network device for the relay device can be reduced, and the additional overhead caused by the introduction of the relay device can be reduced, thereby helping to improve network efficiency.
  • more beams in the signal sent by the network device can be used to communicate with terminals under the relay device or with terminals directly connected to the network device, this improves the spatial freedom during network device scheduling. Spend.
  • the threshold value of the signal quality can specifically be the threshold value of reference signal reception power (RSRP).
  • reaching the threshold value may mean that the RSRP is greater than or equal to the threshold value.
  • the reference signal may include but is not limited to, synchronization signal block (SSB), channel state information reference signal (channel state information reference signal, CSI-RS), sounding reference signal (sounding reference signal, SRS) wait.
  • SSB synchronization signal block
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • the measurement result of the first signal also includes: a transmission configuration indicator (TCI) (or TCI status (TCI)) used to configure a quasi-co-location (QCL) relationship of the first signal. state)) and/or QCL information of the first signal.
  • TCI transmission configuration indicator
  • TCI status TCI status
  • QCL quasi-co-location
  • the identity of the beam at the network device used to transmit the first signal can also be replaced with the identity of the first signal, for configuration At least one of the TCI (or TCI state) of the QCL relationship of the first signal and the QCL information of the first signal.
  • the at least one signal includes all signals among the received signals whose reception quality reaches the threshold value.
  • the relay device can report the measurement results of all signals whose reception quality reaches the threshold among the received signals to the network device, so that the network device can obtain comprehensive beam information and determine the beam of the backhaul link more reasonably.
  • the first indication information is also used to indicate the number of signals for which measurement results need to be reported and/or the maximum value of the number of signals for which measurement results need to be reported.
  • the relay device can report the reception status of part of the signals to the network device, which facilitates the network device to adjust the beam direction of the next signal sent based on the reception status of the signal by the relay device.
  • the relay device Among the signals received by the relay device, there may be some signals whose reception quality is not very good.
  • the measurement reports of these signals have little reference value for the beam direction of the next signal sent by the network device, so there is no need to report them.
  • unnecessary transmission volume that may be caused by the relay device reporting all measurement reports of all received signals can be avoided, allowing resources to be rationally utilized.
  • the transmission resource of the received signal corresponds to multiple component carriers (CC).
  • CC component carriers
  • multiple signals received by the relay device can be transmitted on different frequency domain resources.
  • the transmission resources of the signal sent by the network device also correspond to multiple different CCs. That is, signals sent by network devices can be carried in different frequency domain resources.
  • the method further includes: receiving resource configuration information from the network device, the resource configuration information indicating CCs respectively corresponding to the transmission resources of the multiple signals sent by the network device; the measurement report of the first signal also includes the The identifier of the CC corresponding to the transmission resource of the first signal.
  • the first signal is any one of at least one signal whose signal quality reaches the threshold value. Therefore, the measurement report of each signal in the at least one signal may include the identification of the CC corresponding to its transmission resource.
  • the network device can instruct the relay device through the resource configuration information the CCs corresponding to the transmission resources used to carry each signal, so that when the relay device reports the measurement results, it also reports the CCs corresponding to the transmission resources of each signal. This can facilitate network equipment to reasonably configure subsequent signals sent.
  • the received signals come from multiple transmission reception point (TRP) resource sets.
  • TRP transmission reception point
  • multiple signals received by the relay device can be transmitted on different airspace resources. Since different TRPs can be associated with different resource sets (such as reference signal resource sets), a possible implementation manner in which the received signal comes from multiple TRPs is that the transmission resource of the received signal comes from Multiple resource sets.
  • the transmission resources of the signal sent by the network device also come from multiple different resource sets, or in other words, the network device can control multiple different TRP sends a signal. That is, signals sent by network devices can be carried in different airspace resources.
  • the method further includes: receiving resource configuration information from the network device, the resource configuration information being used to indicate the TRP (or resource set) corresponding to the transmission resources of multiple signals sent by the network device;
  • the measurement report of the first signal also includes the identification of the TRP (or resource set) corresponding to the transmission resource of the first signal.
  • the first signal is any one of at least one signal whose signal quality reaches the threshold value. Therefore, the measurement report of each signal in the at least one signal may include the identification of the TRP (or resource set) corresponding to its transmission resource.
  • the network device can indicate the TRP (or resource set) corresponding to the transmission resources used to carry each signal to the relay device through the resource configuration information, so that when the relay device reports the measurement results, it also assigns the transmission resources of each signal respectively.
  • the corresponding TRP (or resource set) will be reported. This can facilitate network equipment to reasonably configure subsequent signals sent.
  • the method further includes: receiving second indication information from the network device, the second The indication information is used to indicate the beam of the backhaul link; based on the beam of the backhaul link, receive M signals from the network device; and forward the M signals to the terminal device.
  • the M signals are configured based on measurements of the at least one signal.
  • the network device may determine the beam of the backhaul link, and notify the relay device of the determined beam of the backhaul link through the second indication information.
  • the network device can also configure the signal to be sent next based on the determined beam of the backhaul link.
  • the network device can send M signals for forwarding by the relay device based on the measurement results reported one or more times by the relay device.
  • the M signals may also be received by a directly connected terminal of the network device, which is not limited in this application. It should also be understood that the network device can also send other signals in addition to the M signals mentioned above, and this application does not limit the number of signals sent by the network device.
  • the M signals include a second signal and a third signal
  • the resources used to transmit the second signal correspond to the first CC and the first time
  • the resource for transmitting the third signal corresponds to the second CC and the second time
  • the relay access side beam used to forward the second signal on the first CC is the same as the relay access side beam used to forward the second signal on the second CC.
  • the relay access side beam of the third signal is different.
  • the resources used to transmit the M signals include resources corresponding to the first CC and resources corresponding to the second CC, and the relay access side beam used to forward the signal on the first CC is the same as the one used to forward the signal on the first CC.
  • the relay access side beam that forwards the signal on the second CC is different, and the time used to forward the signal on the first CC is different from the time used to forward the signal on the second CC.
  • the transmission resources of the M signals received by the relay device may correspond to different CCs and different times. That is, the M signals received by the relay device may occupy different frequency domain resources and time domain resources.
  • the relay device can forward signals in different beam directions based on different frequency domain resources and signals received on the frequency domain resources.
  • the number of terminal devices connected to the relay device may not be very large, there is no need to The device allocates too many resources. If the signal forwarded by the relay device each time is all frequency domain or air domain resources, it will cause relatively large overhead when traversing its coverage range. Therefore, in order to further reduce the overhead of the network device, the M signals configured for forwarding by the relay device may be carried on different time domain resources and different frequency domain resources and sent.
  • the second signal and the third signal among the M signals may be transmitted on different time-frequency resources, that is, the second signal and the third signal may be sent staggered in the time domain and the frequency domain.
  • the relay device can report the measurement results of signals whose reception quality reaches the threshold to the network device.
  • network equipment can transmit signals carried by different time domain resources and different frequency domain resources using beams corresponding to signals that have been measured and have better reception quality. In other words, these beams may be reused for transmitting the above M signals.
  • relay backhaul side beams used to receive the second signal and the third signal are the same, or the relay backhaul side beams used to receive the second signal and the third signal are different. .
  • the relay device can use the same backhaul side beam to receive signals at different CCs and different times, or it can use different backhaul side beams to receive them.
  • the relay device may use the same backhaul side beam to receive the second signal and the third signal, or may use different backhaul side beams to receive the second signal and the third signal.
  • the return side beam used by the relay device to receive the second signal and the third signal may be configured by the network device through the second indication information.
  • the M signals include a second signal and a third signal
  • the resources used to transmit the second signal correspond to the first TRP and the first time
  • the resources used to transmit the third signal correspond to the second TRP and the second time
  • the relay access side beam used to forward the second signal and the relay access side used to forward the third signal The side beams are different, and the relay return side beam used to receive the second signal is different from the relay return side beam used to receive the third signal.
  • the transmission resources of the second signal and the third signal correspond to different TRPs, that is, the second signal and the third signal may also occupy different airspace resources. Since the resource set can be associated with the TRP, a possible implementation is that the transmission resources of the second signal and the transmission resources of the third signal come from different resource sets. By corresponding the transmission resources of M signals to different CCs or different TRPs, the signals of different CCs or TRPs are forwarded by different relay access side beams, thereby providing coverage for different coverage areas.
  • the second indication information is also used to indicate at least one of the following: the CC corresponding to the transmission resource of each of the M signals, the The time corresponding to the transmission resources of each of the M signals, the TRP (or resource set) corresponding to the transmission resources of each of the M signals, and the time used to forward each of the M signals access side beam.
  • the network device may indicate the beam of the backhaul link through the second indication information, that is, the network device side beam used to send each of the M signals and/or used to receive the M signals.
  • the network device may also additionally indicate one or more of the CC, time, TRP (or resource set) and access side beam corresponding to the transmission resources of the M signals through the second indication information. Since each of the above items can be determined by the network device based on the measurement results reported by the relay device, sending the second indication information before sending the M signals can facilitate the relay device to obtain better reception performance.
  • CC can correspond to frequency domain resources
  • time can correspond to time domain resources
  • TRP (or resource set) can correspond to air domain resources.
  • the network device can also indicate the access side beam, so that the relay device can use the appropriate beam to receive the signal and obtain better reception quality.
  • the network device can also instruct the backhaul side beam, so that the relay device can select the appropriate backhaul side beam to forward the signal, and the signal forwarding efficiency is higher.
  • the beam alignment of the relay device is more accurate and the performance is better when receiving and forwarding signals.
  • the second aspect provides a method for signal forwarding.
  • the method can be applied to network equipment, for example, it can be executed by the network equipment, or it can also be performed by components configured in the network equipment (such as chips, chip systems, etc.) Execution, or it can also be implemented by a logic module or software that can realize all or part of the network device functions, which is not limited in this application.
  • the method includes: sending first indication information to the relay device, the first indication information being used to indicate a threshold value of signal quality, and the threshold value being used to determine the signal for forwarding by the relay device. signal or beam; received from the relay device to The measurement result of one less signal, the at least one signal is the signal whose reception quality reaches the threshold value among the signals received by the relay device, and the measurement result of the first signal in the at least one signal includes one of the following or more: the identifier of the first signal, the identifier of the network device side beam used to send the first signal, the identifier of the relay backhaul side beam used to receive the first signal, the first Information about the reception quality of the signal, and the identity of the relay access side beam used to forward the first signal; wherein the first signal is any one of the at least one signal.
  • the relay device can report the measurement results of the received signal whose signal quality reaches the threshold value.
  • the network device can adjust the beam direction of the next transmitted signal based on the received measurement results.
  • the signals sent by the network device can have more signals to meet the forwarding requirements of the relay device.
  • the number of additional signals configured by the network device for the relay device can be reduced, and the additional overhead caused by the introduction of the relay device can be reduced, thereby helping to improve network efficiency.
  • more beams in the signal sent by the network device can be used to communicate with terminals under the relay device or with terminals directly connected to the network device, this improves the spatial freedom during network device scheduling.
  • the method further includes: determining a beam of the backhaul link based on the measurement result of the at least one signal, where the beam of the backhaul link includes: a relay backhaul side beam and/or a network device side beam. .
  • the backhaul link is the link between the network device and the relay device.
  • the beams of the backhaul link include beams on the relay backhaul side and network equipment side beams.
  • the network device can send signals through the beam of the backhaul link, and the relay device can receive the signal through the beam of the backhaul link.
  • the beam on the network equipment side is the transmitting beam
  • the beam on the relay return side is the receiving beam.
  • the network device can measure the result of at least one signal reported by the relay device. Determine the network device side beam and/or the relay return side beam used for the next signal transmission. Therefore, the measurement result of at least one signal determined through the threshold value may be the signal or beam sent by the network device next time. Make an impact.
  • the threshold value is the threshold value of RSRP. Reaching the threshold value may mean that the RSRP is greater than or equal to the threshold value.
  • the measurement result of the first signal also includes: TCI (or TCI state) used to configure the QCL relationship of the first signal and/or QCL information of the first signal.
  • TCI or TCI state
  • the identity of the beam at the network device used to transmit the first signal can also be replaced with the identity of the first signal, for configuration At least one of the TCI (or TCI state) of the QCL relationship of the first signal and the QCL information of the first signal.
  • the at least one signal includes all signals among the received signals whose reception quality reaches the threshold value.
  • the relay device can report the measurement results of all signals whose reception quality reaches the threshold among the received signals to the network device, so that the network device can obtain comprehensive beam information and determine the beam of the backhaul link more reasonably.
  • the first indication information is also used to indicate the number of signals for which measurement results need to be reported and/or the maximum value of the number of signals for which measurement results need to be reported.
  • the relay device can report the reception status of part of the signals to the network device, which facilitates the network device to adjust the beam direction of the next signal sent based on the reception status of the signal by the relay device.
  • the relay device Among the signals received by the relay device, there may be some signals whose reception quality is not very good.
  • the measurement reports of these signals have little reference value for the beam direction of the next signal sent by the network device, so there is no need to report them.
  • unnecessary transmission volume that may be caused by the relay device reporting all measurement reports of all received signals can be avoided, allowing resources to be rationally utilized.
  • the method before receiving the measurement result of at least one signal from the relay device, the method further includes: sending P signals, the at least A signal is a signal whose signal quality reaches the threshold value among the P signals, and P is a positive integer.
  • the P signals may include some signals with good reception quality and some signals with poor reception quality. Therefore, the number of signals corresponding to the measurement results reported by the relay device may be less than or equal to P.
  • the transmission resources of the P signals correspond to multiple CCs.
  • the P signals sent by the network device can be carried in different frequency domain resources.
  • the method further includes: sending resource configuration information to the relay device, the resource configuration information indicating CCs respectively corresponding to the transmission resources of the multiple signals sent by the network device; the measurement report of the first signal also includes the The identifier of the CC corresponding to the transmission resource of the first signal.
  • the first signal is any one of at least one signal whose signal quality reaches the threshold value. Therefore, the measurement report of each signal in the at least one signal may include the identification of the CC corresponding to its transmission resource.
  • the network device can instruct the relay device through the resource configuration information the CCs corresponding to the transmission resources used to carry each signal, so that when the relay device reports the measurement results, it also reports the CCs corresponding to the transmission resources of each signal. This can facilitate network equipment to reasonably configure subsequent signals sent.
  • P signals are sent through multiple TRPs.
  • the transport resources come from multiple resource sets.
  • the P signals sent by the network device can be carried in different airspace resources. Since different TRPs can be associated with different resource sets (such as reference signal resource sets), a possible implementation manner of sending the P signals through multiple TRPs is that the transmission resources of the P signals come from multiple Different resource sets.
  • the method further includes: sending resource configuration information to the relay device, where the resource configuration information is used to indicate the TRP (or resource set) corresponding to the transmission resources of the multiple signals sent by the network device; the third The measurement report of a signal also includes the identification of the TRP (or resource set) corresponding to the transmission resource of the first signal.
  • the first signal is any one of at least one signal whose signal quality reaches the threshold value. Therefore, the measurement report of each signal in the at least one signal may include the identification of the TRP (or resource set) corresponding to its transmission resource.
  • the network device can indicate the TRP (or resource set) corresponding to the transmission resources used to carry each signal to the relay device through the resource configuration information, so that when the relay device reports the measurement results, it also assigns the transmission resources of each signal respectively.
  • the corresponding TRP (or resource set) will be reported. This can facilitate network equipment to reasonably configure subsequent signals sent.
  • the method further includes: sending a second indication to the relay device Information, the second indication information is used to indicate the beam of the backhaul link; based on the beam of the backhaul link, M signals are sent, and the M signals are signals for forwarding by the relay device.
  • the M signals are configured based on the measurement result of the at least one signal.
  • the network device After receiving the measurement result of at least one signal from the relay device, the network device can configure the signal to be sent next time.
  • the network device can send M signals for forwarding by the relay device based on the measurement results reported one or more times by the relay device.
  • the M signals may also be received by the directly connected terminal, which is not limited in this application.
  • the network device can also send other signals, and this application does not limit the number of signals sent by the network device.
  • the M signals include a second signal and a third signal, and the resources used to transmit the second signal correspond to the first CC and the first time, using The resources for transmitting the third signal correspond to the second CC and the second time; the resources corresponding to the second CC and the first time, and the resources corresponding to the first CC and the second time also carry the information sent by the network device
  • the fourth signal does not belong to the above-mentioned M signals.
  • the transmission resources of the M signals can correspond to different CCs and different times. That is, the M signals received by the relay device can occupy different frequency domain resources and time domain resources.
  • the number of terminal devices connected to the relay device may not be very large, there is no need to allocate too many resources to the relay device. If the signal forwarded by the relay device each time is all frequency domain or air domain resources, it will cause relatively large overhead when traversing its coverage range. Therefore, in order to further reduce the overhead of the network device, the M signals configured for forwarding by the relay device may be carried on different time domain resources and different frequency domain resources and sent.
  • the second signal and the third signal among the M signals may be transmitted on different time-frequency resources, that is, the second signal and the third signal may be sent staggered in the time domain and the frequency domain.
  • the relay device can report the measurement results of signals whose reception quality reaches the threshold to the network device.
  • network equipment can transmit signals carried by different time domain resources and different frequency domain resources using beams corresponding to signals that have been measured and have better reception quality. In other words, these beams may be reused for transmitting the above M signals.
  • a signal such as the above-mentioned fourth signal, may be sent to the directly connected terminal.
  • the transmission resources of the fourth signal may be sent in a time-domain or frequency-domain staggered manner from the second signal or the third signal.
  • other beams may be used to transmit the fourth signal at the first CC corresponding to the second signal and the second time corresponding to the third signal, and at the second CC corresponding to the third signal and the second time corresponding to the second signal, Other beams may also be used to transmit the fourth signal at a time.
  • the M signals include a second signal and a third signal
  • the resources used to transmit the second signal correspond to the first transmission reception point TRP and At the first time, the resources used to transmit the third signal correspond to the second TRP and the second time; at the first time, the resources corresponding to the second TRP and the first time, and the resources corresponding to the first TRP and the first time
  • the resource at the second time also carries a fourth signal sent by the network device, and the fourth signal does not belong to the M signals.
  • the second signal and the third signal may also occupy different airspace resources. Since the resource set can be associated with the TRP, a possible implementation is that the transmission resources of the second signal and the transmission resources of the third signal come from different resource sets.
  • different transmitting beams correspond to different spatial angles, so that signals sent by different transmitting beams can correspond to different coverage areas.
  • the signals of different CCs or TRPs are forwarded by different relay access side beams, thereby providing coverage for different coverage areas.
  • the beams used to transmit the second signal and the fourth signal are different, and/or the beams used to transmit the third signal and the fourth signal are different.
  • the beams used to transmit the second signal and the third signal are the same, or the beams used to transmit the second signal and the third signal are different.
  • the network device may use the same transmit beam (or antenna panel) to transmit the second signal and the third signal, or may use different transmit beams (or antenna panels) to transmit the second signal and the third signal.
  • the transmission beams from the same antenna panel can be considered as the same transmission beam, or the transmission beams with quasi-co-location relationship, or the transmission beams with the same quasi-co-location information, or the transmission beams with the same TCI state beam.
  • Transmit beams from different antenna panels can be considered different transmit beams.
  • the second indication information is also used to indicate at least one of the following: the CC corresponding to the transmission resource of each of the M signals, the The time corresponding to the transmission resources of each of the M signals, the TRP (or resource set) corresponding to the transmission resources of each of the M signals, and the time used to forward each of the M signals access side beam.
  • the network device may indicate the beam of the backhaul link through the second indication information, that is, the network device side beam used to send each of the M signals and/or used to receive the M signals.
  • the network device may also additionally indicate one or more of the CC, time, TRP (or resource set) and access side beam corresponding to the transmission resources of the M signals through the second indication information. Since each of the above items can be determined by the network device based on the measurement results reported by the relay device, sending the second indication information before sending the M signals can facilitate the relay device to obtain better reception performance.
  • CC can correspond to frequency domain resources
  • time can correspond to time domain resources
  • TRP (or resource set) can correspond to air domain resources.
  • the network device can also indicate the access side beam, so that the relay device can use the appropriate beam to receive the signal and obtain better reception quality.
  • the network device can also instruct the backhaul side beam, so that the relay device can select the appropriate backhaul side beam to forward the signal, and the signal forwarding efficiency is higher.
  • the beam alignment of the relay device is more accurate and the performance is better when receiving and forwarding signals.
  • the relay device uses one or more beams to receive each signal in the at least one signal.
  • the relay device may have one or more return side beams for receiving each signal in the at least one signal.
  • the relay device may report one or more backhaul side beams used to receive each signal in the at least one signal to the network device, so that the network device can more comprehensively obtain the beam information of the relay device, thereby enabling the network device to schedule The effect of relay equipment when forwarding signals rate is higher.
  • the relay device is configured to receive one or more access-side beams corresponding to the return-side beams of each signal in the at least one signal.
  • the relay device uses one or more access-side beams for forwarding.
  • the relay device can choose one of them to forward the signal.
  • the network device can obtain more comprehensive beam information of the relay device, thereby making the network device more efficient in scheduling the relay device to forward signals.
  • the network device can flexibly allocate and send the isolation information (or maximum amplification factor/gain/power, actual configurable amplification factor/gain/power, etc.) to different backhaul and access sides of the relay device.
  • the beams of the relay equipment, the return side beams and the access side beams of the relay equipment enable the signals of the network equipment to be multiplexed to a greater extent, and even support more efficient frequency division and space division scheduling, which is conducive to improving Network efficiency.
  • the maximum number of signals that need to be reported with measurement reports does not exceed one of the following: the number of access-side beams of the relay device, or the number of access-side beams and the The minimum number of signals sent by a network device for measurement.
  • the maximum number of signals that need to report measurement reports is less than or equal to the number of access-side beams of the relay device; or, the maximum number of signals that need to report measurement reports is less than or equal to the minimum of the following two items: : The number of access-side beams of the relay device and the number of signals sent by the network device for measurement.
  • the maximum value of the number of signals that need to be reported in a measurement report is configured by the network device, and the maximum value configured by the network device will not exceed the number of signals sent by the network device for measurement.
  • a third aspect provides a communication device, including a unit for implementing the method in the foregoing first aspect or any possible implementation of the first aspect.
  • a fourth aspect provides a communication device, including a unit for implementing the method in the foregoing second aspect or any possible implementation of the second aspect.
  • a communication device including a processor and an interface circuit.
  • the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor.
  • the processor is used to implement the method in the foregoing first aspect or any possible implementation of the first aspect through logic circuits or executing code instructions.
  • a communication device including a processor and an interface circuit.
  • the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to convert signals from the processor.
  • the processor implements the method in the foregoing second aspect or any possible implementation of the second aspect through logic circuits or execution code instructions.
  • a communication system including the aforementioned relay device and network device.
  • a computer-readable storage medium is provided.
  • Computer programs or instructions are stored in the computer-readable storage medium.
  • the above-mentioned first aspect or any possibility of the first aspect is realized. method in the implementation.
  • a computer-readable storage medium is provided.
  • Computer programs or instructions are stored in the computer-readable storage medium.
  • the above-mentioned second aspect or any possibility of the second aspect is realized. method in the implementation.
  • a tenth aspect provides a computer program product containing instructions that, when executed, implement the method of the first aspect or any possible implementation of the first aspect.
  • An eleventh aspect provides a computer program product containing instructions that, when executed, implement the method of the second aspect or any possible implementation of the second aspect.
  • Figure 1 is a schematic diagram of the system architecture suitable for the method provided by the embodiment of the present application.
  • Figure 2A is a schematic structural diagram of network equipment
  • Figure 2B is a schematic structural diagram of a relay device
  • Figure 3 is a schematic diagram of a relay device forwarding signals from network devices
  • Figure 4 is a schematic flow chart of a method for signal forwarding provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of the network device adjusting the beam direction provided by the embodiment of the present application.
  • Figure 6 is a schematic diagram of the backhaul side beam and the access side beam of the relay device provided by the embodiment of the present application;
  • FIGS 7 to 10 are schematic diagrams of network equipment sending signals and relay equipment receiving and forwarding signals provided by embodiments of the present application;
  • Figures 11 and 12 are schematic block diagrams of a communication device provided by embodiments of the present application.
  • Figure 13 is a schematic block diagram of a base station provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • SL sidelink
  • UMTS universal mobile telecommunication system
  • WiMAX global interoperability for microwave access
  • 5G mobile communication system may include non-standalone networking (non-standalone, NSA) and/or independent networking (standalone, SA).
  • the network device in this application may be a device used to communicate with a terminal, or may be a device that connects the terminal to a wireless network.
  • the network device may be a node in a wireless access network.
  • the network device may be a base station, an evolved base station (evolved NodeB, eNodeB), a transmission reception point (TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), Wi-Fi Fi access point (AP), mobile switching center, next generation base station (next generation NodeB, gNB) in 5G mobile communication system, next generation base station in sixth generation (6th generation, 6G) mobile communication system, Or base stations in future mobile communication systems, etc.
  • eNodeB evolved NodeB
  • TRP transmission reception point
  • HNB home base station
  • AP Wi-Fi Fi access point
  • mobile switching center next generation base station (next generation NodeB, gNB) in 5G mobile communication system, next generation base station in sixth
  • the network device can also be a module or unit that completes some functions of the base station.
  • it can be a centralized unit (central unit, CU), distributed unit (distributed unit, DU), RRU or baseband unit (baseband unit, BBU), etc.
  • Network equipment can also be equipment that performs base station functions in D2D communication systems, V2X communication systems, M2M communication systems, and IoT communication systems.
  • Network equipment can also be network equipment in a non-terrestrial network (non terrestrial network, NTN), that is, network equipment can be deployed on high-altitude platforms or satellites.
  • the network equipment can be a macro base station, a micro base station or an indoor station, or a relay node or a donor node, etc.
  • the network device can also be a node in the core network.
  • the network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment.
  • the cell may belong to a macro base station (for example, macro eNB or macro gNB, etc.) , or it can belong to the base station corresponding to a small cell.
  • the small cell here can include: metro cell, micro cell, pico cell, femto cell, etc. , these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
  • the terminal equipment in this application may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device.
  • UE user equipment
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless Communication equipment
  • user agent user device
  • the terminal device may be a device that provides voice/data connectivity to the user, such as a handheld device, a vehicle-mounted device, etc. with wireless connectivity capabilities.
  • some examples of terminal devices can be: mobile phones, tablets, computers with wireless transceiver functions (such as laptops, handheld computers, etc.), mobile internet devices (MID), virtual Reality (VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (selfdriving), drones, remote medical ), wireless terminals in smart grid, transportation security Wireless terminals in safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop Wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G network or terminal equipment in the future evolved public land mobile communication network (public land mobile network, PLMN), etc.
  • MID
  • wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.
  • the terminal device can also be a terminal device in an Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-computer interconnection and object interconnection.
  • IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband (NB) technology, for example.
  • NB narrowband
  • terminal equipment can also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (some terminal equipment), receiving control information and downlink data from network equipment, and sending electromagnetic waves to transmit uplink data to network equipment. .
  • the relay device has a signal forwarding (or reflection) function and can amplify the signal, and may be referred to as a relay for short.
  • the relay equipment can also move the carrier frequency of the signal, or it can demodulate the signal and then re-modulate it and then forward it, or it can also reduce the noise of the signal and then forward it. Therefore, the relay device can perform any one or more of the following processes on the received signal before forwarding: amplification, demodulation, frequency shift, and noise reduction.
  • relay there is another form of relay, called a reflector, or a reflecting surface, or other possible names: intelligent reflecting surface, reflective array, reconfigurable reflecting surface (RIS) ), intelligent reflecting array, reflector, intelligent reflector, backscatter device, passive device, semi-passive device, ambient signal device device).
  • RIS reconfigurable reflecting surface
  • Relay equipment can also be considered as a special form of terminal equipment. If the network side's ability to control relay equipment is considered, it can be divided into non-intelligent relays and intelligent relays; or it can be divided into uncontrolled repeater equipment (uncontrolled repeater) and network controlled repeater equipment (NetConRepeater). or NCR).
  • the network equipment can control the intelligent relay to perform more performance-enhancing functions, such as relay transmission power control, relay amplification gain control, relay beam scanning control, relay precoding control, on/off control, and uplink/downlink forwarding. At least one of the controls.
  • a typical relay device has two antenna panels, one of which is used to communicate with network equipment and can be called the backhaul side; the other is used to communicate with terminal equipment and can be called the access side.
  • the backhaul side the other is used to communicate with terminal equipment and can be called the access side.
  • only one antenna panel is used to receive signals, and the received signals are amplified and then forwarded or sent by another antenna panel.
  • Each panel of the relay can be composed of multiple antennas, and beams can be formed on a single panel to obtain better relay transmission performance.
  • the beam capability of the access side it is further divided into single-beam forwarding and multi-beam forwarding. Among them, if the relay access side has the capability of multiple beams, when the relay forwards signals, the beam on the relay access side needs to be aimed at the terminal device to obtain better transmission performance.
  • the relay device can be used in a multi-hop relay cascade communication network, that is, the relay node can establish a connection with the network device through at least one upper-level relay node and accept the control of the network device.
  • the relay node can establish a connection with the network device through at least one upper-level relay node and accept the control of the network device.
  • Reference signal The transmitter and receiver can negotiate or determine the time and frequency location of the reference signal according to predetermined rules.
  • the reference signal can be used to obtain known signals that are affected by the outside world (such as spatial channels, non-idealities of transmitting or receiving devices) during transmission. It is generally used for channel estimation, channel measurement, auxiliary signal demodulation, and beam quality. Monitoring etc.
  • reference signals can be divided into SSB, CSI-RS, SRS, demodulation reference signal (DMRS), phase tracking reference signal (PTRS), etc.
  • DMRS and CSI-RS are used to obtain channel information
  • PTRS is used to obtain phase change information.
  • Reference signal resources Can be used to configure the transmission attributes of the reference signal, such as time-frequency resource location, port mapping relationship, power factor, scrambling code, etc.
  • the transmitting end device may send the reference signal based on the reference signal resources, and the receiving end device may receive the reference signal based on the reference signal resources.
  • the reference signal resources can also be divided into SSB resources, CSI-RS resources, SRS resources, DMRS resources, PTRS resources, etc.
  • Measurement configuration including resource configuration and reporting configuration.
  • the network device can send measurement configuration information to the terminal device through high-level signaling, such as radio resource control (RRC) signaling, which may specifically include resource configuration information and reporting configuration information.
  • RRC radio resource control
  • Resource configuration information is information related to measurement resources.
  • resource configuration information can be configured through a three-level structure, which includes resource configuration (resourceConfig), resource set (resourceSet) and resource (resource).
  • the network device may configure one or more resource configurations for the terminal device, each resource configuration may include one or more resource sets, and each resource set may include one or more resources.
  • Each resource configuration/resource set/resource can include its own index. In addition, it also includes some other parameters, such as the period of the resource, the signal type corresponding to the resource, etc.
  • Reporting configuration information is information related to measurement result reporting.
  • the network device can configure one or more reporting configurations (reportConfig) for the terminal device.
  • Each reporting configuration includes reporting indicators, reporting time and period, reporting format, and other reporting-related information.
  • the reported configuration also includes the index of the resource configuration, which is used to indicate the measurement configuration through which the reported results are measured.
  • Beam refers to the main lobe of the radiation pattern of the antenna or antenna array, which is formed by the superposition of the radiation signals of each antenna module. Beams can be understood as spatial filters or spatial parameters.
  • the beam used to transmit signals may be called a transmission beam (transmission beam, Tx beam), and may be a spatial domain transmit filter (spatial domain transmit filter) or spatial transmit parameters (spatial transmit parameters, spatial Tx parameters).
  • the transmission beam can refer to the distribution of signal strength formed in different directions in space after the signal is transmitted by the antenna.
  • the beam used to receive signals can be called a reception beam (reception beam, Rx beam), and can be a spatial domain receive filter (spatial domain receive filter) or spatial receive parameters (spatial receive parameters, spatial Rx parameters).
  • the receiving beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space.
  • the beam forming technology may be beam forming technology or other technologies.
  • the beamforming technology may specifically be digital beamforming technology, analog beamforming technology, or hybrid digital/analog beamforming technology. This application does not limit this.
  • Beams, spatial filters, spatial parameters, etc. are just a few possible names listed in this article. This application does not rule out the possibility of defining other terms to express the same or similar meanings in future protocols.
  • the reference beam direction may include a reference peak beam direction and a reference beam center direction
  • EIRP equivalent isotropic radiated power
  • Quasi-co-location The signals corresponding to the antenna ports with a QCL relationship have the same parameters, or the parameters of one antenna port can be used to determine the parameters of another antenna port that has a QCL relationship with the antenna port, or , two days
  • the line ports have the same parameters, or the parameter difference between the two antenna ports is less than a certain threshold.
  • the parameters may include one or more of the following: delay spread, Doppler spread, Doppler shift, average delay, average Gain, spatial reception parameter.
  • the spatial reception parameters may include one or more of the following: angle of arrival (AOA), average AOA, AOA extension, angle of departure (AOD), average departure angle AOD, AOD extension, reception Antenna spatial correlation parameters, transmitting antenna spatial correlation parameters, transmitting beams (or transmitting beams), receiving beams and resource identifiers.
  • AOA angle of arrival
  • AOA extension angle of departure
  • AOD angle of departure
  • AOD extension angle of departure angle AOD
  • reception Antenna spatial correlation parameters transmitting antenna spatial correlation parameters, transmitting beams (or transmitting beams), receiving beams and resource identifiers.
  • Type A Doppler frequency shift, Doppler spread, average delay, delay spread;
  • Type B Doppler frequency shift, Doppler expansion
  • Type C Doppler frequency shift, average delay
  • Type D (type D): Space receives parameters.
  • QCL The QCL involved in the embodiment of this application is a type D QCL.
  • QCL can be understood as a QCL of type D, that is, a QCL defined based on spatial reception parameters.
  • the QCL relationship refers to the QCL relationship of type D: the QCL relationship between the port of the downlink signal and the port of the downlink signal, or the QCL relationship between the port of the uplink signal and the port of the uplink signal, it can be that the two signals have the same AOA or AOD , used to indicate having the same receive beam or transmit beam.
  • the QCL relationship between the downlink signal and the uplink signal or between the ports of the uplink signal and the downlink signal can be that the AOA and AOD of the two signals have a corresponding relationship, or the AOD and AOA of the two signals have a corresponding relationship, that is, beams can be used Reciprocity, determine the uplink transmit beam based on the downlink receive beam, or determine the downlink receive beam based on the uplink transmit beam.
  • the signal transmitted on the port with QCL relationship can also have a corresponding beam.
  • the corresponding beam includes at least one of the following: the same receiving beam, the same transmitting beam, and the transmitting beam corresponding to the receiving beam (corresponding to the scenario with reciprocity ), the receiving beam corresponding to the transmitting beam (corresponding to the scenario with reciprocity).
  • Signals transmitted on a port with a QCL relationship can also be understood as receiving or transmitting signals using the same spatial filter.
  • the spatial filter may be at least one of the following: precoding, weight of the antenna port, phase deflection of the antenna port, and amplitude gain of the antenna port.
  • the signal transmitted on the port with QCL relationship can also be understood as having a corresponding beam pair link (BPL).
  • the corresponding BPL includes at least one of the following: the same downlink BPL, the same uplink BPL, and the corresponding downlink BPL.
  • the spatial reception parameter (ie, QCL of type D) can be understood as a parameter indicating the direction information of the reception beam.
  • Transmission Configuration Indication (TCI) state can be used to indicate the QCL relationship between two reference signals.
  • the network device can configure the TCI status list for the terminal device through high-level signaling (such as RRC message), and can configure the TCI status list for the terminal device through high-level signaling (such as medium access control-control element (MAC-CE)) or physical layer signaling.
  • Commands such as downlink control information (DCI), activate or indicate one or more TCI states.
  • DCI downlink control information
  • the configuration information of a TCI state may include the identification of one or two reference signal resources and the associated QCL type.
  • the terminal equipment can demodulate the physical downlink control channel (PDCCH) or the physical downlink shared channel (physical downlink shared channel, PDSCH).
  • PDCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • the terminal device can know which transmit beam the network device uses to transmit signals, and can then determine which receive beam to use to receive signals based on the beam pairing relationship determined by channel measurement.
  • Figure 1 is a schematic diagram of a system architecture suitable for the method provided by the embodiment of the present application.
  • the system 100 shown in Figure 1 includes: a network device 110, a relay device 120, and terminal devices 131 to 133.
  • the network device 110 can provide network coverage for a specific geographical area, and can perform wireless communication with terminal devices (such as the terminal device 131) located in the coverage area (cell).
  • the terminal devices 131 to 133 may be mobile or fixed, which is not limited in this application.
  • the relay device 120 is introduced to assist the communication between the network device 110 and the terminal devices 132 and 133.
  • a terminal device that can directly communicate with a network device without resorting to auxiliary communication with a relay device is called a directly connected terminal, such as the terminal device 131 in Figure 1; Connection requires the help of relay equipment
  • Terminal devices that communicate with network devices with the assistance of equipment are called indirect terminals, such as terminal devices 132 and 133 in Figure 1.
  • FIG. 2A is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 200 shown in FIG. 2A includes: a processor 201, a memory 202, and a transceiver 203.
  • the transceiver 203 includes a transmitter 2031, a receiver 2032 and an antenna 2033.
  • the transmitter 2031 can be used to transmit signals through the antenna 2033
  • the receiver 2032 can be used to receive signals through the antenna 2033.
  • the structure of the terminal device is similar to the structure shown in FIG. 2A , and can be understood with reference to the above description in conjunction with FIG. 2A .
  • FIG. 2A For the sake of brevity, no additional figure description is provided here.
  • FIG. 2B is a schematic structural diagram of a relay device provided by an embodiment of the present application.
  • the relay device 300 shown in FIG. 2B includes one or more of a controller 301, a signal amplifier 302, signal transceiver units 303 and 304, and the like.
  • the relay device 200 can be used to implement communication and signaling interaction, signal amplification, etc. with network devices and terminal devices.
  • the relay control (such as the controller 301) is also called a mobile terminal (MT or NCR-MT), and other parts (such as the signal amplifier 302, signal transceiver units 303 and 304) can constitute a forwarding module (forwarding module).
  • Fwd or NCR-Fwd can also be called a radio unit (RU), or a distributed unit (DU), or a distributed radio unit (DRU), etc.).
  • the link between the network device and the forwarding module of the connected relay device is the backhaul link
  • the link between the forwarding module of the relay device and the connected terminal device is the access link.
  • Forwarding links may include backhaul links and access links.
  • the relay device can receive signals from the network device through the backhaul link, and forward the received signals to the terminal device through the access link.
  • the signal received by the relay device using the backhaul link and forwarded through the access link may be a reference signal, such as SSB, CSI-RS, etc., or it may also be a data signal, which is not limited in this application.
  • the relay device can also receive signals from the terminal device through the access link and forward the received signal to the network device through the backhaul link.
  • the signal received by the relay device using the access link and forwarded through the backhaul link may be a reference signal, such as SRS, etc., or it may also be a data signal, which is not limited in this application.
  • the relay device can receive signals from the network device through the backhaul side antenna and/or send signals to the network device.
  • the beam used by the relay device to receive signals or send signals through the backhaul side antenna is the access side beam.
  • the relay device may send signals to the terminal device through the access-side antenna and/or receive signals from the terminal device.
  • the beam used by the relay device to send or receive signals through the access-side antenna is the return-side beam.
  • the signal transceiver unit 303 may include a transmitter 3031, a receiver 3032 and an antenna 3033
  • the signal transceiver unit 304 may include a transmitter 3041, a receiver 3042 and an antenna 3043.
  • the transmitter 3031 or 3041 can be used to transmit signals through the antenna 3033 or 3043
  • the receiver 3032 or 3042 can be used to receive signals through the antenna 3033 or 3043.
  • the relay controller and the backhaul link can have the same beam and other information, for example, they both share an antenna.
  • the controller (MT) and the forwarding module (Fwd) transmit and receive signals at the same time (for example, the control signal and the forwarding signal may be frequency division multiplexed)
  • the controller and the backhaul link have the same receiving beam.
  • the network device indicates the beam information on the return side.
  • the receiving beams on the MT and Fwd backhaul sides can have a QCL relationship (for example, QCL typeA and QCL typeD).
  • the default Fwd return side beam is the same as the MT beam, or has a preset QCL relationship. To simplify the discussion, they can be collectively called return side beams.
  • one signal transceiver unit such as the signal transceiver unit 303 of the relay device is used to receive signals from the network device, and another signal transceiver unit (such as the signal transceiver unit 304) is used to amplify the amplified signal. The received signal is forwarded to the terminal device.
  • the controller 301 can also communicate with network equipment or terminal equipment through the signal transceiver unit 303 or 304.
  • the controller 304 communicates with the network device through the signal transceiver unit 303 to establish communication links and beam alignment between the relay and the network device; it can also be used to receive configuration or instruction information of the network device to facilitate the network.
  • the device controls the working time, working status, or working mode of the repeater; or is used to receive the trigger signal of the terminal device, so that the relay device enters the corresponding working mode as needed.
  • the controller 301 can also determine the working status (eg, amplification factor, phase) of the signal amplifier 302 based on the instruction information of the network device or its own measurement information.
  • each unit in Figure 2B may be one or more.
  • relay equipment can determine beams with better quality from the transmit beams, amplify and forward them.
  • the network device sends a signal, and the relay device amplifies and/or performs other processing on the received signal from the backhaul side antenna, and then forwards it through the access side antenna. If the access side of the relay device has the capability of multiple beams, when the relay device forwards signals, it needs to aim the access side beam at the terminal device to obtain better transmission performance.
  • the relay equipment also has a large demand for the number of beams in order to meet the coverage requirements. For example, when there is a requirement for M transmit beams on the access side of a relay device, a simple approach is for the network device to send M downlink reference signals, and after the relay device receives them on the return side, it sequentially passes the M access The side beams are forwarded to the terminal device; or the terminal device sends M uplink reference signals, and the relay device receives them at the access side and then forwards them to the network device through the M return side beams.
  • the sending end of the reference signal such as the above-mentioned network equipment or terminal equipment, may need to send additional reference signals to the relay equipment to ensure the coverage requirements of the relay equipment.
  • FIG. 3 shows an example in which a relay device forwards a signal from a network device.
  • the relay device needs to forward M beams in order to meet the downlink coverage requirements; the network device originally needs to send N signals, such as RS#0 to RS#N-1 shown in Figure 3.
  • N signals such as RS#0 to RS#N-1 shown in Figure 3.
  • the reference signals (RS) sent using beams #B 0 to #B K-1 respectively as shown in Figure 3 #0 to RS#K-1, so the relay device can directly forward K signals among the N signals sent by the network device.
  • the relay device receives the return side beams of the K signals, which are #BH 0 to #BH K-1 respectively.
  • the network device After amplifying them, they are forwarded through the access side beams #AC 0 to #AC K-1 .
  • Another NK signal sent by the network device such as the reference signals RS#N to RS# N-1 sent using beams #B K to #B N-1 as shown in Figure 3, is not received by the relay device. .
  • the network device also needs to send MK additional signals to the relay device, such as RS#N to RS#N+MK-1 as shown in Figure 3.
  • the network device can use any one or more beams among beams #B 0 to #B K-1 to send the MK signals.
  • Figure 3 shows an example of using beam #B0 to send the MK signals. This application does not limit this.
  • the network equipment can select the beam with the best signal reception quality (such as the beam with the strongest RSRP) to send the MK signals, or it can select the beams #B 0 to #B K-1 based on the multiplexing situation of the terminal equipment.
  • One or more beams are multiplexed to transmit the MK signals.
  • the network device in order to meet the downlink coverage of the relay device, the network device needs to send M-K additional signals. As the number of relay devices increases, the number of additional signals that network devices need to send will also increase, and the proportion of overhead will also increase.
  • this application provides a method.
  • the relay device can measure the received signal and report the signal with better signal quality to the network device, thereby facilitating the network device to adjust the beam direction of the signal according to the reported result, making it more convenient.
  • the multi-signal beams are directed toward the relay device, so that more beams meet the forwarding requirements of the relay device, that is, the signals sent by the network device can be multiplexed by the relay device to a greater extent.
  • M and K shown above that is to increase the K value as much as possible so that the value of M-K can be reduced. In this way, the number of additional signals added by the network device to the relay device can be reduced, which is beneficial to saving the cost of the network device.
  • the entity that sends signals can be replaced by a relay device, and the entity that measures signal quality can be replaced by a network device.
  • the relay device can report the transmit power information and the return side beam (that is, the transmit beam) information to the network device, so as to determine the link loss, thereby facilitating the network device to determine the beam and relay forwarding on the network device side.
  • M The number of beams required by the relay device to meet the coverage requirements. M is an integer greater than 1. In downlink transmission, M can be understood as the number of access-side beams required by the relay device; in uplink transmission, M can be understood as the number of return-side beams required by the relay device.
  • M can be the number of access-side beams of the relay device configured by the network device when the relay device forwards signals; M can also be the number of access-side beams determined by the relay device based on its own capabilities or needs. , for example, is the number of access-side beams required by the relay device to cover the predefined range. This application does not limit this.
  • M may be related to the type of forwarded signal. For example, the number of beams that the relay device needs to forward SSB and the number of beams that the relay device needs to forward CSI-RS may be different.
  • M may also be a value determined based on network device configuration information. For example, when the network device comprehensively considers at least one performance indicator such as overhead, capacity, and coverage, the number of beams allocated to the relay device for forwarding.
  • the above configuration information may be about at least one of the following: time and/or frequency resources when the relay starts forwarding, beams when the relay starts forwarding, and gain when the relay starts forwarding.
  • the beams that the relay enables forwarding may refer to the return-side beams of the relay forwarding link, the access-side beams of the relay forwarding link, or the return-side beams and access-side beams of the relay forwarding links.
  • M may also be a preconfigured value.
  • preconfigured values when planning deployment or maintaining relay equipment.
  • K Among the signals sent by the network device most recently (or the first time; or the last time; or the latest/last signal sending time period; or the latest/last signal sending time window) , the number of beams (that is, the number of signals) that can be forwarded by the relay device and directly connected to the terminal device. In other words, any one of the K beams can communicate with the indirectly connected terminal by forwarding signals through the relay device.
  • K ⁇ M, K is an integer.
  • the terminal device 131 directly communicates with the network device 110 (direct connection); the terminal device 133 or the terminal device 132 establishes a connection with the network device 110 through the relay device 120, where the relay device 120 forwards the signal so that The terminal device 133 or the terminal device 132 can establish a connection with the network device 110, or enable the terminal device 133 or the terminal device 132 to have better connection performance with the network device 110 (eg, better communication performance).
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same functions and effects.
  • the first configuration information and the second configuration information are only used to distinguish different indication information, and their order is not limited.
  • words such as “first” and “second” do not limit the number and execution order, and words such as “first” and “second” do not limit the number and execution order.
  • synchronization signal block SSB
  • CSI-RS channel state information reference signal
  • PRACH physical random access channel
  • SRS sounding reference signal
  • SSB synchronization signal block
  • TCI transmission configuration indication
  • the SSB can also be replaced by CSI-RS, physical downlink control channel (physical downlink control channel, PDCCH), physical downlink shared channel (physical downlink share channel, PDSCH), etc.
  • the embodiments of this application involve a variety of beams.
  • the beams used by the network device side to send signals are recorded as network device side beams.
  • the backhaul side beam of the relay device is recorded as the relay backhaul side beam, which may also be referred to as the backhaul side beam.
  • the access side of the relay device is denoted as the relay access side, and the access side beam of the relay device is denoted as the relay access side beam, which may also be referred to as the access side beam.
  • the beam on the network device side is used to send signals, so the beam on the network device side is a transmit beam or a transmit beam.
  • the relay return side beam is used to receive signals, so the relay return side beam is a receiving beam used to receive signals.
  • the beams in the backhaul link include network device side beams for transmitting signals and relay backhaul side beams for receiving signals.
  • network device side beam, transmit beam, and transmit beam are used interchangeably, and the three have the same meaning.
  • the return side beam and the receiving beam are used interchangeably, and they express the same meaning.
  • At least one means one or more, and “multiple” means two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an "or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or It's multiple.
  • each table in the embodiment of this application is only an example.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by this application.
  • Each table does not limit the scope of protection of this application.
  • the parameter names shown in the titles of each table can also be other names that can be understood by the communication device, and the values or expressions of the parameters can also be other values or expressions that can be understood by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or Hash table etc.
  • Figure 4 is a schematic flow chart of a method for signal forwarding provided by an embodiment of the present application.
  • Figure 4 shows this method from the perspective of interaction between the relay device and the network device.
  • the relay device in this method can also be replaced by components in the relay device, such as chips, chip systems or other modules that can be used to implement part or all of the functions of the relay device.
  • the network device in this method can also be Replaced with components in network equipment, such as chips, system-on-chips, or other modules that can be used to implement some or all of the functions of the network equipment. This application does not limit this.
  • each step in Figure 4 does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
  • each step in the process shown in Figure 4 is only an example, and does not necessarily mean that every step must be performed.
  • Those skilled in the art can make simple changes based on the same concept and the process shown in Figure 4, such as adjusting the execution order of some steps, or adding other steps or reducing steps, etc. to implement the method provided in this application. These transformations should all fall within the protection scope of this application.
  • the method 400 shown in FIG. 4 includes steps 410 to 480. Each step in method 400 is described in detail below.
  • step 410 the network device sends first indication information, where the first indication information is used to indicate a threshold value of signal quality.
  • the relay device receives the first indication information.
  • the threshold value is related to the quality of the forwarded signal.
  • the threshold can be used to determine the signal or beam for forwarding by the relay device. That is to say, the relationship between the signal quality and the threshold value can be used to determine whether the signal is forwarded or recommended for forwarding.
  • Parameters used to measure signal quality include received signal strength indicator (received signal strength indicator, RSSI), RSRP, reference signal receiving quality (RSRQ), signal-to-noise ratio (signal -noise ratio (SNR), signal to interference plus noise ratio (SINR, referred to as signal-to-interference-to-noise ratio), precoding matrix indicator (precoding matrix indicator (PMI)), transmitted precoding matrix indicator (transmitted precoding matrix indicator, TPMI), rank indicator (rank indicator, RI), transmission rank indicator (transmitted rank indicator, TRI), layer indicator (layer indicator, LI), timing advance (timing advance, TA), path loss (pathloss), etc. .
  • this threshold is the RSRP threshold for forwarding signals.
  • the quality of the forwarded signal can be the quality of the signal received by the relay device when the relay device receives, amplifies and/or performs other signal processing and forwarding on the forwarding link.
  • EIRP effective isotropic radiated power
  • the quality of the forwarded signal may also be related to at least one of the following: base station transmit power (for downlink forwarding), relay backhaul side beam (for downlink forwarding), terminal transmit power (for uplink forwarding) ), relay access side beam (for uplink forwarding), isolation between relay access side beam and return side beam, relay amplification gain, relay reflection loss, relay downlink output power (or EIRP) (for downlink forwarding), relay uplink output power (or EIRP) (for uplink forwarding).
  • base station transmit power for downlink forwarding
  • relay backhaul side beam for downlink forwarding
  • terminal transmit power for uplink forwarding
  • relay access side beam for uplink forwarding
  • isolation between relay access side beam and return side beam relay amplification gain, relay reflection loss
  • relay downlink output power (or EIRP) for downlink forwarding
  • relay uplink output power or EIRP
  • the quality of the forwarded signal is related to the base station transmit beam, relay return side beam, and base station transmit power; in uplink forwarding, the quality of the forwarded signal is related to the terminal transmit beam, relay access side beam , related to the terminal transmit power.
  • the relay device may select a signal (or beam) for forwarding based on the threshold value, or may suggest a signal (or beam) for forwarding based on the threshold value. For example, when the reception quality of these signals (or beams) meets a threshold value, these signals (or beams) can (or are recommended to be) used for forwarding.
  • the network equipment side beam in the path corresponds to the relay return side beam (that is, the receiving beam); or the signal here corresponds to the terminal equipment side beam in the access link (that is, the transmitting beam) and Corresponds to the relay access side beam (that is, the receiving beam).
  • the relay device can also determine the signal for which measurement results need to be reported based on the threshold value.
  • the relay device can generate corresponding measurement results for signals whose reception quality reaches the threshold and report them to the network device.
  • the signal includes, but is not limited to, one or more of SSB, CSI-RS, TRS, DMRS, PTRS, control signal or data signal, etc.
  • the control signal is, for example, a physical downlink control channel (PDCCH)
  • the data signal is, for example, a physical downlink share channel (PDSCH).
  • the signal includes, but is not limited to, one or more of SRS, PRACH (physical random access channel, physical random access channel), DMRS, PTRS, control signal or data signal, etc.
  • the control signal is, for example, a physical uplink control channel (PUCCH)
  • the data signal is, for example, a physical uplink share channel (PUSCH).
  • PUCCH physical uplink control channel
  • PUSCH physical uplink share channel
  • the threshold value corresponds to the threshold value of RSRP.
  • the relay device can select the reference signals (or beams) received by the backhaul side beam based on the threshold value. These reference signals (or beams) can be used for forwarding, and the RSRP of these reference signals (or beams) reaches the RSRP threshold. limit.
  • the network device can also indicate the value range of the threshold value.
  • This value range can be used for measurements and for determining threshold values.
  • the measurement corresponding to this value range can refer to Table 10.1.6.1-1 in technical specification (TS) 38.331; for the threshold value, the actual value can be obtained by subtracting 156 from the value in the IE, and the unit is Decibel relative to one milliwatt (dBm).
  • the network device may indicate that the RSRP range (RSRP-Range) is 0 to 127. Then for the threshold value, its actual value can be obtained by subtracting 156 from the value in the IE, and the unit is dBm. Among them, the value 127 in IE means that the actual value is infinity.
  • a possible form in the protocol in which the network device indicates the above threshold value and value range through the first indication information is as follows:
  • the reference signal may be SSB, for example.
  • the above threshold value is the threshold value of the RSRP of the SSB.
  • the relay device can select the SSBs (or beams) received by the backhaul side beam based on the threshold value. These SSBs (or beams) can be used for forwarding, and the RSRP of these SSBs (or beams) reaches the RSRP threshold value. Alternatively, the relay device can report the SSBs (or beams) received by the backhaul side beam based on the forwarding threshold. These SSBs (or beams) meet the forwarding threshold, and the RSRP of these SSBs (or beams) reaches the RSRP. threshold value.
  • the network device indicates the threshold value and the value range through the first indication information.
  • a possible form in the protocol is as follows:
  • the reference signal may also be CSI-RS, for example.
  • the above threshold value is the threshold value of RSRP of CSI-RS.
  • the relay device can select the CSI-RS (or beam) received by the backhaul side beam based on the threshold value. These CSI-RS (or beam) can be used for forwarding, and the RSRP of these CSI-RS (or beam) reaches The threshold value of RSRP.
  • the relay device may report the CSI-RS (or beam) received by the backhaul side beam based on the forwarding threshold. These SSBs (or beams) satisfy the forwarding threshold, and the CSI-RS (or beam) RSRP reaches the RSRP threshold.
  • the network device indicates the threshold value and the value range through the first indication information.
  • a possible form in the protocol is as follows:
  • the first indication information may be included in the reporting configuration information, for example, be an information element in the reporting configuration information. That is to say, when the network device configures measurement result reporting-related information for the relay device, it can carry the above threshold value in the reported configuration information.
  • the first indication information can also be carried in other signaling, which is not limited in this application.
  • the above threshold value is related to the quality of the forwarded signal, and may be, for example, the RSRP threshold value of the forwarded signal.
  • the signal may refer to one or more of SSB, CSI-RS, TRS, DMRS, PTRS, SRS that may be used for uplink forwarding, etc. that can be used for uplink and/or downlink forwarding; or it may also refer to a control signal or data.
  • Signals such as PDCCH and PDSCH that can be used for downlink forwarding, or PUCCH and PUSCH that can be used for uplink forwarding.
  • each step below takes a signal used for downlink forwarding as an example to describe the method provided by the embodiment of the present application.
  • step 420 the network device sends a signal. Accordingly, the relay device receives the signal.
  • the network device can send signals through transmission resources pre-configured for the relay device, and the relay device can receive signals on this resource.
  • the signals sent by the network device are reference signals, such as CSI-RS and SSB.
  • the resources configured by the network device for the relay device are reference signal resources, such as CSI-RS resources and SSB resources.
  • the relay device may receive the reference signal based on preconfigured reference signal resources.
  • the resources of the P signals may be indicated by resource configuration information.
  • resource configuration information of various types of signals please refer to the existing technology and will not be described in detail here.
  • the number of signals sent by the network device is P
  • the number of signals received by the relay device is also P, or less than P
  • P is a natural number greater than 1.
  • the P signals may include some signals with better reception quality and some signals with worse reception quality.
  • P signals are determined by the network device based on current network requirements, for example, based on the number of connected terminal devices. This application does not limit the number of signals sent by the network device.
  • the relay device can amplify and/or otherwise process the received signal before forwarding it according to the processing flow of the existing technology.
  • This application does not limit this.
  • the relay device can measure based on the received signal, send the measurement results to the network device, and can forward the signal that meets the forwarding requirements. For example, the reception quality reaches Threshold signal is forwarded.
  • the solution provided in this application can make it possible for the signal for forwarding to be sent or received based on a specific network device side beam and a relay side beam (for example, a return side beam) when the relay forwards the signal. And these beams can enable the signals received and/or sent (or forwarded) by the relay to meet the forwarding requirements.
  • step 430 the relay device performs measurements based on the received signals to obtain a measurement result of at least one signal.
  • the relay device may determine a signal with better reception quality from the received signal according to the threshold value indicated in the first indication information. Taking the RSRP threshold as an example, the relay device can report the received signals whose RSRP is greater than or equal to the threshold to the network device.
  • threshold values are used to measure signal reception quality in different ways.
  • the signal quality reaching the threshold may mean that the measured value is greater than or equal to the threshold.
  • the signal quality reaching the threshold may mean that the measured value is less than or equal to the threshold value.
  • the specific definition of signal quality reaching the threshold value should be determined based on the parameters corresponding to the threshold value.
  • the number of signals whose reception quality reaches the threshold is recorded as R, and the number of signals whose measurement results are reported is recorded as L, 0 ⁇ R ⁇ P, L ⁇ 1, and in the case of R ⁇ 1 Below, R ⁇ L, L and R are both integers. That is, among the signals received by the relay device, the reception quality of L signals reaches the threshold value. Therefore, the relay device can respectively generate corresponding measurement results for L signals among the R signals.
  • R can be 0, that is, among the signals received by the relay device this time, the reception quality of none of the signals reaches the threshold value.
  • steps 420 and 430 of this embodiment can be repeated until one or more signals whose reception quality reaches the threshold value can be determined from the received signals, so that the measurement results thereof can be reported.
  • R can also be P, that is, all P signals sent by the network device are received by the relay device, and the reception quality of the P signals at the relay device side reaches the threshold value.
  • the relay device can sort the reception quality of P signals from best to worst according to predefined rules, and report the measurement results corresponding to the top L signals.
  • R can also be smaller than P, that is, among the signals received by the relay device this time, the reception quality of at least one signal reaches the threshold value.
  • the relay device can report the measurement results of all signals that reach the threshold value, or can also report the measurement results of a part of the signals that reach the threshold value. For example, the reception quality of the P signals received by the relay device all reaches the threshold value, but the relay device selects a part of them to report. That is, L ⁇ R ⁇ P.
  • the specific implementation of the relay device selecting a part of the signal to report the measurement results can be as described above, and will not be described again.
  • the measurement reports of the L signals generated by the relay device may include measurement reports of the R signals whose reception quality reaches the threshold value, or may include measurement reports of some of the R signals whose reception quality reaches the threshold value.
  • the measurement results of the L signals reported by the relay device can facilitate the network device to determine how many of the P signals or which signals have beam directions toward the relay device, which can meet the forwarding requirements of the relay device and thus facilitate the network.
  • the device adjusts the beam direction of the next transmitted signal so that more signals can be reused by the relay device.
  • the measurement result of the first signal may include one or more of the following: the identification of the first signal, the network device side beam used to send the first signal.
  • the first signal is any one of the L signals.
  • the identifier of the signal can be used to identify a signal, and different signals can be distinguished by different identifiers.
  • the identifier of the signal may be, for example, the index of the signal.
  • the index of the signal may be, for example, the index of the transmission resource of the signal indicated in the resource configuration, such as the index of the reference signal resource.
  • the identification of the network device side beam used to transmit the first signal may be used to indicate the transmission beam of the network device. Since the transmission beam of the network device can be derived from the identity of the first signal, TCI status or QCL information, the identity of the beam at the network device used to transmit the first signal can also be replaced with the identity of the first signal, for configuration At least one of the TCI (or TCI state) of the QCL relationship of the first signal and the QCL information of the first signal.
  • TCI can be used to indicate TCI status
  • TCI status can be used to configure the QCL relationship between multiple signals.
  • Signals with QCL relationships can be configured via a TCI state.
  • the TCI status can be used to configure the QCL relationship between multiple reference signals.
  • the reference signal resources corresponding to the reference signals with the QCL relationship can be indicated in the same TCI, so the signal can also be indicated through the TCI status.
  • the TCI used to configure the QCL relationship of the first signal indicates reference signal resource indexes of multiple reference signals that have QCL relationships with the first signal.
  • TCI-StateId TCI state identifiers
  • the network device can indicate the TCI state through TCI, for example, the TCI field in the downlink control information (downlink control information, DCI) indicates the TCI state. Therefore, the above L signals can be respectively indicated by L TCI (or TCI status). If there are some parts of the L signals, If the signal has a QCL relationship, the TCI (or TCI state) used to indicate this part of the signal may be the same TCI (or TCI state).
  • QCL relationship specifically refers to any one or multiple types of QCL relationships.
  • the QCL information of the signal can be specifically used to indicate the spatial reception parameters of the signal, such as AOA, DOA, etc.
  • network equipment can obtain richer measurement results, and then make more reasonable adjustments to the beam direction of the next transmitted signal.
  • the relay device can be used to perform one or more measurements on each signal sent by the network device. Each measurement can use one receiving beam, so the beam used by the relay device to receive each signal can be one or Multiple. When there are multiple beams used to receive each signal, the relay device may select one or more beams with better reception quality to report.
  • the relay device can also configure one or more access-side beams for each return-side beam for forwarding.
  • the relay device may report the corresponding access-side beam configured for each backhaul-side beam to the network device.
  • Information on the reception quality of each signal may be used to indicate the reception quality of the signal by the relay device.
  • the information about the reception quality of each signal can specifically be RSRP, or the relative amount of RSRP relative to the threshold value, or the relative amount of RSRP relative to all received signals. Relative amount of RSRP maximum, etc. This application does not limit this.
  • the measurement results of the L signals generated by the relay device are not limited to those shown in Tables 1 to 4 above.
  • the measurement results of the L signals may include those shown in any one of Tables 1 to 4. One or more columns, or they can be combined to obtain measurements that contain more information.
  • reception quality information may be reported in a differential manner (or relative value), that is, only one absolute measurement value is reported, and other reported values are relative values.
  • the measurement results of the L signals may include: an absolute value RSRP0 (which can be a quantized absolute value), and L-1 relative values, in units of decibel milliwatts (decibel relative). to one milliwatt, dBm).
  • the absolute value is quantized when reported, and the quantization step size may be less than 2 (unit is decibel (dB)).
  • the compensation corresponding to RSRP0 may be 0.5; for another example, the compensation corresponding to RSRP0 may be 1.
  • the step size of the reported value can be determined based on instructions from the network device, or the step size of the reported value can also be determined based on the information that the relay device needs to report.
  • L-1 relative values can also have different designs, for example, if the RSRP is sorted in a preset order (for example, from high to low; another example, from low to high; another example, non-decreasing; another example, non- Increasingly), the reception quality information corresponding to the first reference signal identification is the above-mentioned absolute value RSPP0 (for example, the absolute value after quantization is reported), the reception quality information corresponding to the second reference signal identification is the relative value RSRP1,
  • the relative value RSRP1 may be the difference between the RSRP corresponding to the second reference signal identifier and RSRP0; the reception quality information corresponding to the third reference signal identifier may be the relative value RSRP2, and the relative value RSRP2 may be the second reference signal Identifies the difference between the corresponding RSRP and RSRP0, and so on; or, if the RSRP is sorted in a preset order (for example, from high to low; another example, from low to high; another example,
  • the relative value RSRP2 can be the difference between the RSRP corresponding to the third reference signal identifier and RSRP1, and so on. .
  • the quantization step size of the relative value may be less than 2, for example, the relative value quantization step size is 0.5, and for example, the relative value quantization step size is 1.
  • the reported absolute value RSRP and the RSRP used to obtain the relative value may be different.
  • the difference can be made based on the measured absolute value, and then quantized into the reported relative value. That is, what is reported is the quantified absolute value or relative value.
  • the reported absolute value and relative value can be defined in a similar manner. For the sake of brevity, description of the same or similar situations will be omitted in the following text.
  • the quantization steps corresponding to RSRP0 and the relative value are different.
  • the quantization step corresponding to RSRP0 is 1, and the quantization step corresponding to the relative value is 0.5.
  • the quantization steps corresponding to different relative values are different.
  • the quantization step size of the relative value corresponding to RSRP1 is 1, and the quantization step size of the relative value corresponding to RSRP2 is 0.5.
  • the quantization step size refers to the interval or deviation between values corresponding to adjacent reported information when the reception quality is converted into reported information. For example, if the quantization step size is 1, if the value range corresponding to the reported information a0 is [a, a+1), then the value range corresponding to the reported information a0+1 is [a+1, a+2). Similar steps can be applied to other quantization steps.
  • the reported information is information about the signal reception quality, or in other words, a quantified value of the signal reception quality; the value corresponding to the reported information is the reception quality.
  • the value corresponding to the reported information is RSRP, and the reported information is quantified information used to indicate RSRP.
  • the relative value quantization step size and/or the absolute value quantization step size may be determined by the relay device and reported to the network device; or it may be a predefined value; or it may be determined according to the instruction information of the network device.
  • the relay equipment determines and reports, which is helpful for reporting accurate signal quality to the network equipment based on the actual relay capabilities and received signal conditions, which is helpful for improving forwarding performance.
  • the measurement results of the L signals reported by the relay device may be the measurement results of all signals whose reception quality reaches the threshold value, or may be the measurement results of some of the signals.
  • the network device may instruct the relay device to indicate the number of signals that need to report measurement results, or the maximum or minimum value of the number of signals that need to report measurement results.
  • the above-mentioned first indication information is also used to indicate at least one of the following: the number of signals for which measurement results need to be reported, the maximum value of the number of signals for which measurement results need to be reported, or the minimum value of the number of signals for which measurement results need to be reported. .
  • the first indication information is used to indicate the number of signals for which measurement results need to be reported.
  • the relay device may generate a corresponding number of measurement results according to the number indicated by the first indication information.
  • the first indication information indicates that the number of signals for which measurement results need to be reported is L, and the relay device generates measurement results for L signals.
  • the first indication information is used to indicate the maximum value L max of the number of signals for which measurement results need to be reported.
  • the relay device may generate measurement results of no more than L max signals according to the maximum value L max indicated by the first indication information, that is, L ⁇ L max .
  • the maximum value Lmax does not exceed the number of access-side beams required by the relay device.
  • the number of access-side beams required by the relay device is M, then the maximum value L max satisfies: L max ⁇ M.
  • the maximum value L max does not exceed the minimum of the following two: the number of access-side beams required by the relay device and the number of signals sent by the network device for measurement.
  • the number of access-side beams required by the relay device is M
  • the signal sent by the network device for measurement is The quantity
  • the maximum value L max satisfies: L max ⁇ min (M, P).
  • the first indication information is used to indicate the minimum value L min of the number of signals for which measurement results need to be reported.
  • the relay device may generate measurement results of at least L min signals according to the minimum value L min indicated by the first indication information, that is, L ⁇ L min .
  • the relay device performs measurements based on the received P signals and finds that the number of signals whose reception quality reaches the threshold is less than the above-mentioned minimum value L min .
  • the relay device can sort the reception quality of the P signals in order from best to worst, and generate corresponding measurement results for the top-ranked L min signals. At this time, the measurement results of the above L min signals may not fully meet the requirement that the reception quality reaches the threshold value.
  • step 440 the relay device sends the measurement results of the L signals to the network device. Accordingly, the network device receives the measurement result of the at least one signal from the relay device.
  • the relay device can report the measurement results of the L signals through preconfigured reporting resources.
  • the reported resource may be determined, for example, through the reporting configuration described above, or may be determined through other methods, which is not limited in this application.
  • the specific implementation manner in which the relay device reports the measurement results of the L signals to the network device through reporting resources may be the same as the current reporting manner, and will not be described in detail here.
  • the measurement results of the L signals reported by the relay device to the network device can be used to determine the beam of the backhaul link.
  • the beams of the backhaul link may include network device side beams and/or relay device backhaul side beams. Since the beam of the backhaul link is determined for signal forwarding, the network device side beam in the beam of the backhaul link can be used to send the signal for forwarding, and the relay device side return beam can be used to receive the signal for forwarding. Signal.
  • step 450 the network device determines the beam of the backhaul link based on the measurement result of the at least one signal.
  • the network device can determine the network device-side beam used to send the next signal and/or the relay return-side beam used to receive the signal based on the measurement results of the L signals reported by the relay device, that is, determine the beam used for the next signal.
  • the beam sent by the backhaul link The network device determines the beam of the backhaul link based on the measurement results of the L signals reported by the relay device, and can adjust the beam direction of the next signal sent by the network device and/or the beam direction of the next signal received by the relay device, thereby This allows more signals to go toward the relay device, thereby obtaining better reception quality on the relay device side.
  • the network device configures the relay to use at least one beam information for the backhaul link, which may be the same as the beam information corresponding to the L signals reported by the relay device, or have the same QCL relationship.
  • the beam on the network device side of the backhaul link used for forwarding is the network device side beam of a signal reported by the relay; for another example, the beam on the backhaul link relay backhaul side used for forwarding is the beam on the network device side of the relay.
  • Figure 5 shows an example in which the network device adjusts the beam direction of the next transmitted signal based on the measurement results of L signals.
  • the two signals sent by the network device include RS#0 and RS#1, as shown in the solid line beam in the figure. If the reception quality of RS#1 reaches the threshold value and the reception quality of RS#0 does not reach the threshold value, the measurement results of L signals reported by the relay device include the measurement results of one signal (such as RS#1).
  • the network device when it sends a signal next time, it can adjust the direction of RS#0 and RS#1 (as shown by the dotted beam in the figure), or adjust the beam direction of RS#0 so that the beam directions of RS#0 and RS1 are consistent with The beam direction of RS#1 sent last time is relatively close.
  • the relay device can originally be used to forward the signal RS#1. Due to the adjustment of the beam direction of the signal sent next time by the network device, the relay device can be used to forward the signal RS#1. It becomes RS#0 and RS#1.
  • the network equipment originally needs to allocate M-1 additional beams to send signals in order to meet the forwarding requirements of the relay equipment; after adjustment, it needs to allocate M-2 additional beams to send signals in order to enable the relay The device's forwarding needs are met.
  • step 460 the network device sends second indication information, where the second indication information is used to indicate the beam of the backhaul link.
  • the relay device receives the second indication information.
  • a network device sends a signal, it can do so based on the most recently determined beam for the backhaul link. For example, if the most recently determined beam of the backhaul link by the network device includes a network device-side beam, the network device can use the determined network device-side beam to send the signal; if the most recently determined beam of the backhaul link by the network device Including the relay backhaul side beam, the network device can use the network device side beam paired with the relay backhaul side beam determined this time to send signals.
  • the network device side beam paired with the relay backhaul side beam may be determined through beam scanning, or may be determined based on previous measurements, which is not limited in this application.
  • the second indication information may also be used to indicate the transmission resource of the signal to be sent next, so that the relay device receives the signal based on the transmission resource. Since the relay device receives the signal from the network device, it can forward the signal that meets the forwarding requirements.
  • the second indication information can also be regarded as the resource configuration information of the signal configured by the network device for the relay device for forwarding.
  • the network device can determine subsequent steps based on the relationship between the number of signals corresponding to the received measurement results and the preset number.
  • steps 420 to 450 can be repeatedly performed until the number of signals corresponding to the received measurement results is greater than Or equal to the preset quantity above.
  • step 460 may be performed, and the network device sends second indication information to the relay device to indicate the beam of the backhaul link; and Step 470: The network device sends M signals for forwarding.
  • steps 420 to 460 may be repeatedly executed until the number L of signals corresponding to the measurement results received is Greater than or equal to the preset quantity above.
  • step 470 may be performed, and the network device sends M signals for forwarding.
  • each time the network device sends a signal it can be sent based on the beam of the backhaul link determined in the previous measurement, and each time the relay device receives a signal, it can Receive based on the beam of the backhaul link indicated by the most recently received second indication information.
  • the relay device may use the relay backhaul side beam indicated by the second indication information.
  • the beam receives the signal; if the beam of the backhaul link indicated by the second indication information most recently received by the relay device includes a network device side beam, the relay device can use the network device side beam indicated by the second indication information. Paired relay backhaul side beam reception.
  • the relay backhaul side beam paired with the network device side beam may be determined through beam scanning, or may be determined based on previous measurements, which is not limited in this application.
  • the network device can adjust the beam direction of the next transmitted signal based on each received measurement result, so that more beams are directed toward the relay device, thereby allowing the reception quality of more signals to reach the threshold. Therefore, each measurement result determined by the relay device based on the received signal may be different from the measurement result determined based on the previously received signal, and the number of signals corresponding to the measurement result may also be different. For example, based on the first reception The number of signals whose reception quality reaches the threshold measured based on the received signal is recorded as R1, and the number of signals whose signal quality reaches the threshold measured based on the second received signal is R2. R1 and R2 may be the same, or they may different.
  • the relay device forwards the signal, among the signals sent by the network device, the signal for forwarding is sent based on a specific beam direction, and the relay device can also use a specific return side beam to receive it. , these beams can enable the signals received and/or forwarded by the relay device to meet the forwarding requirements.
  • the network device can configure M signals for forwarding for the relay device. Specifically, the network device can configure M and K signals for the relay device. and M-K, and based on the determined value, indicate to the relay device the transmission resources used to transmit the M signals, so that the relay device can receive the M signals on the corresponding resources. .
  • the second indication information sent by the network device based on the M signals configured for the relay device can also be used to indicate the transmission resources of the M signals, access side beams, and so on. Therefore, the second indication information can be regarded as configuration information in which the network device configures M signals for forwarding by the relay device.
  • the second indication information may be carried on one of the following items: physical broadcast channel (PBCH), remaining minimum system information (RMSI), system information block (system information) block, SIB)1, SIB2, SIB3, medium access control (medium access control, MAC)-control element (control element, CE), downlink control information (downlink control information, DCI), radio resource control (radio resource control, RRC) signaling or system information.
  • PBCH physical broadcast channel
  • RMSI remaining minimum system information
  • system information block system information block
  • SIB system information block
  • SIB2 medium access control
  • CE medium access control
  • downlink control information downlink control information
  • DCI downlink control information
  • RRC radio resource control
  • step 470 the network device sends M signals for forwarding.
  • the relay device receives the M signals.
  • the M signals can be understood as signals with better signal quality received by the relay device among the signals sent by the network device, which meet the forwarding requirements of the relay device and can be used for forwarding by the relay device. However, this application does not limit the role of the M signals. Some or all of the M signals may be received by the directly connected terminal.
  • the network device sending M signals and the relay device receiving the M signals can be sent and received based on the most recently determined beam of the backhaul link.
  • the network device sending M signals and the relay device receiving the M signals can be sent and received based on the most recently determined beam of the backhaul link.
  • the network device sends M signals for forwarding does not mean that the network device only sends the M signals.
  • the network device can also send signals to other terminal devices connected to the network device according to network requirements. This application does not limit the number of signals sent by the network device.
  • step 480 the relay device sends the received M signals to the terminal device.
  • the relay device can forward the received M signals.
  • the relay device may amplify and/or otherwise process the received M signals and then forward them to the terminal device. Since the specific implementation method of forwarding signals by the relay device can be found in the existing technology, it will not be described in detail here.
  • the M signals received by the relay device may be received at different times. Therefore, the M signals forwarded by the relay device may also be forwarded at different times. For example, as shown in Figure 4, in step 4701, the signal 1 for forwarding is received, and then in step 4801, the received signal 1 is forwarded, and so on, until the signal M for forwarding is received in step 470M, Then, in step 480M, the received signal M is forwarded.
  • the receiving step and the forwarding step can be performed at the same time, or the relay device delays the received signal by a small amount (or called group delay) before forwarding it. . For example, while receiving signal 1, signal 1 is forwarded at the same time. This application does not limit this.
  • the relay device can also delay the received signal by a small amount before forwarding it according to the instruction information of the network device (or the reported information of the terminal device, without limitation).
  • the delay of the received signal by the relay device may be called the forwarding delay of the relay device, and the forwarding delay may be determined based on the instruction information of the network device.
  • the forwarding delay of the relay device can be much smaller than the orthogonal frequency division multiplexing (OFDM) symbol length; or, the forwarding delay of the relay device can be much smaller than the cyclic prefix length.
  • OFDM orthogonal frequency division multiplexing
  • the relay device can also report its own forwarding delay capability to the network device (or terminal device). For example, report at least one of the following: whether the relay device supports delayed forwarding, and the specific delay value supported by the relay device. If the relay device supports multiple delay values, the relay can choose to report one or more delay values. Based on the reported information, the network device can instruct the relay to forward the packet with appropriate delay.
  • the beam used by the relay device to receive M signals (that is, the return side beam) and the beam used to forward the M signals (that is, the access side beam) can be pre-bound.
  • one backhaul side beam corresponds to one access side beam, as shown in Table 3 above, or one backhaul side beam corresponds to multiple access side beams, as shown in Table 4 above.
  • the relay device may determine the beams used to forward the M signals based on the beams used to receive the M signals, and then use different access side beams to forward the corresponding signals.
  • the relay device can arrange the reception qualities of the M signals in order from high to low (or non-increasingly), and the coverage capabilities of the access side beams in order from low to high (or non-increasingly). , corresponding to the return side beams of the M signals to the access side beams in sequence.
  • the access side beam of the relay device satisfies the following corresponding relationship: the gain of beam #AC k is less than or equal to the gain of beam #AC k+1 , and the measurement result satisfies: the reception quality of RS#k is better than RS# The reception quality of k+1, for example, the RSRP of RS#k is greater than or equal to the RSRP of RS#k+1.
  • the backhaul side beam with better signal reception quality corresponds to the access side beam with lower coverage capability and poorer signal reception quality.
  • the access side beam corresponding to the backhaul side beam has higher coverage capability. In this way, the power output capabilities of different beams can be aligned, the relay coverage capability can be improved, and more beams of the network device can meet the forwarding requirements, thereby reducing the cost of the network device.
  • L R
  • M indicates the number of access-side beams configured by the network device for the relay device.
  • K represents the number of beams (that is, the number of signals) that can be multiplexed by the relay device and the directly connected terminal device among the signals sent by the network device.
  • the network device configures the value of K for the relay device.
  • the network device can configure the values of K and/or M for the relay device.
  • M configured by the network device for the relay device may be related to Ln .
  • the network device can configure the number of beams on the access side of the relay device to be equal to the number of beams on the backhaul side.
  • the network device can configure the values of at least two of M, K and MK for the relay device. In addition to configuring the relay device to forward K signals, the network device also configures the relay device to forward signals at other MK times.
  • the relay device can report the measurement results according to the threshold value indicated by the network device, so that the network device can adjust the beam direction of the next signal sent according to the measurement results, so that the signal sent by the network device can have more information.
  • Multiple signals meet the forwarding needs of relay equipment. In this way, the additional overhead caused by the introduction of relay equipment is reduced, which is beneficial to improving network efficiency.
  • more beams in the signal sent by the network device can be used to communicate with terminals under the relay device or with terminals directly connected to the network device, this improves the spatial freedom during network device scheduling. Spend.
  • the number of terminal devices connected to the relay device may not be very large, there is no need to allocate too many resources to the relay device. If the signal forwarded by the relay device each time is all frequency domain or air domain resources, it will cause relatively large overhead when traversing its coverage range. Therefore, in order to further reduce the overhead of the network device, the M signals configured for forwarding by the relay device can be carried and sent on different time domain resources and different frequency domain/air domain resources respectively. In order to obtain better reception quality, these signals carried in different time domain resources and different frequency domain/air domain resources can be transmitted using beams corresponding to signals that have been measured and have better reception quality. In other words, these beams can be Repeatedly used to send the above M signals.
  • the M signals received by the relay device for forwarding can be carried on different time domain resources and different frequency domain resources, or they can also be carried on different time domain resources and different frequency domain resources. on airspace resources.
  • some of the M signals come from the same transmission beam direction of the network device (and/or from the same backhaul side beam direction of the relay device).
  • the relay device can also use the same backhaul side beam to receive multiple signals on different time domain resources and different frequency domain resources, or use the same backhaul side beam to receive multiple signals in different time domain resources and different airspaces. Multiple signals are received on the resource.
  • the M signals include a second signal and a third signal.
  • the second signal and the third signal are signals sent by the network device through the same network device transmitting beam at different time points and on time-frequency resources corresponding to different CCs.
  • the transmission resources of the second signal correspond to the first CC and the first time
  • the transmission resources of the third signal correspond to the second CC and the second time.
  • the M signals received by the relay device for forwarding may be signals carried on different time domain resources, different frequency domain resources, and from the same network device transmission beam direction.
  • the relay device can also receive multiple signals on different time domain resources and different frequency domain resources.
  • the return side beam used to receive the second signal and the return side beam used to receive the third signal may be the same or different; but the access beam used to forward the second signal
  • the side beam is different from the access side beam used to forward the third signal.
  • different CCs may correspond to different relay access side beams.
  • the relay device is used to forward the signal on the first CC
  • the access side beam and the access side beam used to forward the signal on the second CC may be different, and the time used to forward the signal on the first CC and the time used to forward the signal on the second CC are also Can be different. That is, the access-side beam used to forward the second signal is different from the access-side beam used to forward the third signal, and the time used to forward the second signal is different from the time used to forward the third signal.
  • FIGS. 7 and 8 illustrate examples of the second signal and the third signal.
  • the signal RS#k in FIG. 7 and FIG. 8 is an example of the second signal
  • the signal RS#j is an example of the third signal.
  • the RS shown in Figure 7 and Figure 8 can be SSB, CSI-RS etc., this application includes but is not limited to this.
  • Figure 7 shows the communication connections between gNB and NCR, and between UE1 and UE2.
  • the ellipse in Figure 7 indicates the beam direction.
  • the beam direction shown with a dotted line represents the beam direction that is not used at this time
  • the beam direction shown with a solid line represents the beam direction that is used at this time.
  • the beam directions on the gNB side are all shown with solid lines, indicating multiple (for example, two) beam directions being played out at the same time at this moment.
  • Figure 7 shows the signal RS#k sent by gNB on the resources corresponding to time t k and CC0
  • b) in Figure 7 shows the signal RS# sent on the resources corresponding to time t j and CC1 j.
  • Signals RS#k and RS#j are both sent through the same transmit beam. As shown in the figure, the beam direction of RS#j does not change compared with RS#k.
  • gNB in addition to sending the signal RS#k on the resources corresponding to time t k and CC0, gNB can also send other signals, such as beams in other directions as shown in a) in Figure 7;
  • the signal RS#j is sent on the resources at time t j and CC1, and other signals may also be sent, such as beams in other directions as shown in b) of Figure 7. This application does not limit the directions of these signals.
  • NCR can use the same backhaul side beam to receive RS#k and RS#j, but the time and frequency of receiving RS#k and RS#j are different, specifically, the signal is received on the resource corresponding to time tk and CC0 RS#k, signal RS#j is received on the resource corresponding to time t j and CC1.
  • the beams used by the NCR to transmit the RS#k and RS#j are also different. As shown in the figure, the access-side beam of NCR used to forward RS#k is directed towards UE1, while the access-side beam used to forward RS#j is directed towards UE2. In order to easily distinguish the two access-side beams, the The beam corresponding to the signal transmitted by the NCR is shown as a solid line, and the beam corresponding to the signal not transmitted by the NCR is shown as a dotted line.
  • the gNB may also send other signals on other CCs (ie CC1, among others). At this time, the signals sent by gNB on other CCs are different from the signals sent on CC0.
  • the gNB may also send other signals on other CCs (ie, CC0, among others). At this time, the signals sent by gNB on other CCs are different from the signals sent on CC1.
  • RS#k in Figure 7 may be SSB#k
  • RS#j may be SSB#j. If the signal SSB# k is sent on the resources of CC0 (ie, the target CC) at time tk, other data signals or reference signals may also be sent on other CCs (eg, CC1) at this time.
  • CC1 ie, the target CC
  • other data signals or reference signals may also be sent on other CCs (eg, CC0) at this time.
  • the fourth signal does not belong to the above-mentioned M signals, that is to say, the fourth signal is not a signal forwarded by the relay device.
  • the beam used to transmit the second signal is different from the beam used to transmit the fourth signal
  • the beam used to transmit the third signal is different from the beam used to transmit the fourth signal.
  • the transmission beam of RS#k in FIG. 7 is different from the transmission beam of other signal 1
  • the transmission beam of RS#j is different from the transmission beam of other signal 2.
  • each relay access side beam forwards signals of the entire frequency band (or passband), or signals of multiple TRPs. This forwarding scheme will cause waste when the user resource demand under the relay is not much.
  • the network equipment when users in the relay coverage area (for example, terminal devices 132 and 133 in Figure 1) do not have much resource requirements, the network equipment only allocates a small amount of CC or TRP time/frequency resources for relaying signals to these users to meet their communication needs. At the same time, the network device can allocate other resources (CC or TRP) to users of the directly connected network device (for example, in Figure 1, the terminal device 131 is a directly connected terminal). This makes resource utilization more efficient.
  • Figure 8 shows a schematic diagram of gNB transmitting signals and NCR receiving and forwarding signals.
  • Figure 8 is only an example, intended to illustrate the transmission, reception and forwarding of signals RS#k and RS#j. It does not describe the transmission beams of other signals on the gNB side, as well as the return side beams and access side beams of NCR. is limited, so not all signals sent by gNB are shown in the figure.
  • gNB uses beam #B k to send signal SSB#k on the resource corresponding to CC0
  • NCR uses beam #BH k on the backhaul side to receive signal SSB# k
  • Beam #AC k forwards signal RS #k.
  • the transmission resource of the signal SSB#k forwarded by the NCR corresponds to time t k in the time domain and corresponds to CC0 in the frequency domain.
  • gNB uses beam #B k to send signal SSB#j on the resource corresponding to CC1
  • NCR uses backhaul side beam #BH k to receive signal SSB#j, and uses access side beam #AC j to forward the signal.
  • SSB#j the transmission resource of the signal SSB#j forwarded by the NCR corresponds to the time in the time domain.
  • t j corresponding to CC1 in the frequency domain.
  • the M signals received by the relay device for forwarding are carried in different time domain resources and different frequency domain resources.
  • the M signals used for forwarding can also be carried in different frequency domain resources, different time domain resources, and different air domain resources.
  • gNB can also use different beams to send signals of each CC (ie, CC0 and CC1, and others) at time t k and time t j respectively. At this time, signals of different CCs can be sent by different beams.
  • Figure 9 shows another schematic diagram of gNB transmitting signals and NCR receiving and forwarding signals.
  • Figure 8 is only an example, intended to illustrate the transmission, reception and forwarding of signals RS#k and RS#j. It does not describe the transmission beams of other signals on the gNB side, as well as the return side beams and access side beams of NCR. is limited, so not all signals sent by gNB are shown in the figure.
  • the signals sent by gNB on CC0 and CC1 at time t k and time t j are SSB, for example, including SSB#k (i.e., an example of RS#k) and SSB#j (i.e., RS An example of #j).
  • SSB#k i.e., an example of RS#k
  • SSB#j i.e., RS An example of #j
  • the gNB beam (or antenna panel) B 1,j is adopted.
  • the beam B 0,j can be adopted on CC0, Send SSB#j on CC0.
  • the SSB#k sent by gNB on the resources corresponding to time t k and CC0 and the SSB#j sent on the resources corresponding to time t j and CC1 are signals sent to the relay device for forwarding.
  • the SSB#k sent on the resource corresponding to CC1 at t k and the SSB#j sent on the resource corresponding to CC0 at time t j are other signals.
  • the signal sent to the relay device for forwarding, as well as the return-side beam used by the relay device to receive the signal and the access-side beam used for forwarding the signal are marked with thick lines in the figure.
  • the gNB beam (or antenna panel) B 0,k at time t k and the gNB beam (or antenna panel) B 1,j at time t j may be the same, or may have the same quasi-colocation information, or can also have the same TCI status.
  • the gNB beam (or antenna panel) B 0,k at time t k and the gNB beam ( or antenna panel) B 1,k at time t k can be different, and the gNB beam B0,j at time t j is different from the gNB beam (or antenna panel) B 1,k at time t j
  • the gNB beam B 1,j can be different.
  • NCR at time t k and time t j the corresponding backhaul side receiving beams may be the same or different.
  • the gNB can configure multiple TRPs to send signals to the same relay in different geographical locations.
  • the multiple TRPs can be understood as antenna panels deployed by the gNB in different geographical locations and can be used to send signals in different directions.
  • the second signal and the third signal are carried in resource transmission in different time domains and different frequency domains, but are received through the same backhaul side beam on the relay device side and forwarded through different access side beams. applicable to this scenario.
  • the second signal and the third signal come from different TRPs.
  • the second signal comes from the first TRP
  • the third signal comes from the second TRP.
  • the M signals received by the relay device for forwarding may be signals carried on different time domain resources, different frequency domain resources, and different air domain resources, and from the transmit beam directions of different TRPs.
  • the relay device can also receive multiple signals on different time domain resources, different frequency domain resources, and different air domain resources.
  • the return-side beam used to receive the second signal and the return-side beam used to receive the third signal may be the same or different; the access-side beam used to forward the second signal may be the same as the return-side beam used to receive the third signal. It is different from the access side beam that forwards the third signal. In other words, different TRPs may correspond to different relay access side beams.
  • the transmission resources of the second signal correspond to the first TRP and the first time
  • the transmission resources of the third signal correspond to the second TRP and the second time
  • the relay device it is used to forward the signal from the first TRP
  • the access side beam and the access side beam used to forward the signal from the second TRP may be different, and the time used to forward the signal from the first TRP and the time used to forward the signal from the second TRP It can also be different. That is, the access-side beam used to forward the second signal is different from the access-side beam used to forward the third signal, and the time used to forward the second signal is different from the time used to forward the third signal.
  • the gNB allocates different resource sets to different TRPs, and therefore different TRPs can be associated with different resource sets. Therefore, a possible implementation manner in which the second signal and the third signal come from different TRPs is that the transmission resources of the second signal and the transmission resources of the third signal belong to different resource sets. For example, TRP1 is associated with the first resource set, TRP2 is associated with the second resource set, the transmission resources of the second signal come from the first resource set, the transmission resources of the third signal come from the second resource set, the first resource set and the second resource set The resource sets are different. Different TRPs can send signals to the same relay device through resources in different resource sets, and the relay device can use the same backhaul side beam to receive signals from different TRPs and use different The access side beam is forwarded.
  • Figure 10 still uses the signal RS#k as an example of the second signal and the signal RS#j as an example of the third signal to describe the communication connection between the devices in this scenario.
  • FIG 10 is a schematic diagram of TRP1 and TRP2 sending signals, and NCR receiving and forwarding signals.
  • Figure 10 shows the communication connections between TRP1, TRP2 and NCR, and between UE1 and UE2.
  • TRP1 and TRP2 can be controlled by gNB to send signals to the NCR.
  • TRP1 transmits the signal RS#k on the resource corresponding to time tk and CC0
  • TRP2 transmits the signal RS#j on the resource corresponding to time tj and CC1.
  • signals RS#k and RS#j can be received through the same backhaul side beam.
  • the ellipse in Figure 10 represents the beam direction.
  • the beam direction played by the gNB and the beam direction on the NCR access side are both shown in solid lines, indicating that multiple (for example, two) beam directions are played simultaneously at this moment.
  • NCR After NCR receives the signal RS#k, it can use the access side beam to forward the signal RS#k; after receiving the signal RS#j, it can use another access side beam to forward the signal RS#j, as shown in the figure.
  • the access side beams of the NCR forwarded signals RS#k and RS#j are oriented in different directions, the former is oriented towards UE1 and the latter is oriented towards UE2.
  • TRPs are associated with different resource sets. That is, in the example of FIG. 10 , the resource used by TRP1 to send the signal RS#k belongs to one resource set, and the resource used by TRP2 to send the signal RS#j belongs to another resource set.
  • the second signal and the third signal are two examples of the signals among the above-mentioned M signals.
  • the M signals sent by the network device may contain more signals. Although they are transmitted in different time domain resources and different frequency domain resources, the relay device can receive them through the same backhaul side beam and through different access side beams. Forward.
  • TRP1 may also send other signals on other CCs (ie, CC1 and others). At this time, the signals sent by TRP1 on other CCs are different from the signals sent on CC0.
  • TRP2 can also send signals on other CCs (ie, CC0, and others). At this time, the signals sent by TRP2 on other CCs are different from the signals sent on CC1.
  • TRP1 may also send other data signals or reference signals on the resources corresponding to other CCs (for example, CC1) at this time tk .
  • TRP2 sends the signal SSB#j on the resource corresponding to CC1 at time t j
  • TRP2 can also send other data signals or reference signals on the resources corresponding to other CCs (for example, CC0) at this time t j .
  • different TRPs may be used to send signals of each CC (ie, CC0 and CC1, and others) at time t k and time t j respectively.
  • signals of different CCs are sent by different TRPs.
  • the signals sent on CC0 and CC1 are SSB as an example. If the signal sent on the resource of CC0 at time t k is SSB#k, TRP1 is adopted. At this time, TRP2 can be adopted on CC1 and SSB#k on CC1 is sent. In the same way, if the signal sent on the resource of CC1 at time t j is SSB#j and TRP2 is adopted, at this time TRP1 can be adopted on CC0 and SSB#j on CC0 is sent.
  • TRP1 transmits the beam of SSB#k on the resource of CC0 at time t k and TRP2 transmits the beam of SSB#j on the resource of CC1 at time t j , and may have the same quasi-co-location information, or Can also have the same TCI status.
  • NCR at time t k and time t j the corresponding backhaul side receiving beams may be different.
  • step 460 when the network device configures the M signals for forwarding for the relay device, it may specifically indicate the component carrier and time corresponding to the transmission resource of each of the M signals, and may also use In addition to indicating the relay access side beam of each of the M signals, it can even be used to indicate the relay return side beam and/or the network device side beam of each of the M signals.
  • the beam alignment of the relay device is more accurate and the performance is better when receiving and forwarding signals.
  • the above-mentioned second indication information may be used to indicate (or determine) at least one of the following: CC, access side beam, beam of the backhaul link, time, TRP, and resource set.
  • Table 5 and Table 6 below show several possible forms of the second indication information.
  • the second indication information sent by the network device is not limited to what is shown in Table 5 and Table 6 above.
  • the second indication information may also include more or less information than in Table 5 or Table 6. This application does not limit this.
  • the M signals sent by the network device for forwarding are configured based on the measurement results reported by the relay device.
  • the above second indication information is determined based on the measurement results reported by the relay device. If the network device wants to send different signals through the same transmit beam, it can determine whether the signal sent through the transmit beam meets the forwarding requirements based on the measurement results of the previous signals sent through the transmit beam.
  • the transmission resources of the P signals sent by the network device in step 420 correspond to multiple CCs, or multiple resource sets.
  • the network device may further indicate the multiple CCs or multiple resource sets, or indicate QCL relationships between different CCs or different resource sets.
  • QCL relationship between The QCL relationship between different CCs may be used to indicate a CC that has a QCL relationship with the CC corresponding to the transmission resource of each of the P signals.
  • the QCL relationship between different resource sets may be used to indicate a resource set that has a QCL relationship with the resource set to which the transmission resource of each of the P signals belongs.
  • the relay device By indicating multiple CCs or multiple resource sets, it is convenient for the relay device to report the CCs or resource sets corresponding to the signals corresponding to the measurement results to the network device together when reporting measurement results, thereby making it easier for the network device to properly process subsequent signals. configured locally.
  • the relay device can conveniently determine the backhaul side beam and/or the access side beam, so that the network device can make assumptions about the relay device's QCL and relay The QCL assumptions of the device itself are consistent, which helps the receiving end obtain better signal demodulation performance for the forwarded signal.
  • the network device can include the identifiers of the multiple CCs, or the QCL relationship between different CCs, in the resource configuration information used to indicate the transmission resources of the P signals, or, in the resource configuration information Contains the identifiers of multiple resource sets, or the QCL relationship between different resource sets.
  • the measurement results of each signal may include the identification of the CC corresponding to the respective transmission resource, or the ID of the resource set it belongs to.
  • the network device can configure the M signals for forwarding for the relay device according to the CC or resource set corresponding to each signal. For example, as exemplified above in conjunction with Figures 7 to 10, configure transmit beams corresponding to different CCs or resource sets and towards the same backhaul side beam of the relay device, and send signals at different times, that is, so that towards the relay.
  • the transmission resources corresponding to the signals sent by the transmit beam of the same backhaul side beam of the device are staggered in the time domain and frequency domain, or staggered in the time domain and air domain.
  • the network device configures the same transmit beam with multiple signals based on the measurement results reported by the relay device, and staggers the transmission in the time domain and frequency domain, or staggers the transmission in the time domain and air domain, which can satisfy the requirements of the relay.
  • the coverage requirements of the equipment cause different signals to be sent in different directions on the access side of the relay equipment, which can save resources and avoid resource waste.
  • the network device and the relay device include corresponding hardware structures and/or software modules that perform each function.
  • the units and method steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driving the hardware depends on the specific application scenarios and design constraints of the technical solution.
  • Figures 11 and 12 are schematic structural diagrams of possible communication devices provided by embodiments of the present application. These communication devices can be used to implement the functions of relay devices or network devices in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.
  • the communication device may be the relay device 120 or the network device 110 as shown in Figure 1, or it may be the relay device 300 as shown in Figure 2B
  • the network device 200 as shown in FIG. 2A may also be a module (such as a chip) applied to a relay device or a network device.
  • the communication device 1100 includes a transceiver unit 1110 and a processing unit 1120 .
  • the communication device 1100 is used to implement the functions of the relay device or network device in the method embodiment shown in FIG. 4 .
  • the transceiver unit 1110 is used to receive the first indication information, receive a signal, and send the measurement result of at least one signal; the processing unit 1120 uses Based on the received P signals, a measurement result of at least one signal is generated.
  • the transceiver unit 1110 may include a sending unit and a receiving unit.
  • the sending unit may be configured to perform the sending operation of the relay device in the above method embodiment shown in FIG. 4, and the receiving unit may be used to perform the receiving operation of the relay device in the above method embodiment shown in FIG. 4.
  • the transceiver unit 1110 is used to send the first indication information, send a signal, and receive the measurement result of at least one signal;
  • the processing unit 1120 is used to Based on measurements of at least one signal, a beam for the backhaul link is determined.
  • the transceiver unit 1110 may include a sending unit and a receiving unit.
  • the sending unit may be used to perform the sending operation of the network device in the method embodiment shown in FIG. 4, and the receiving unit may be used to perform the receiving operation of the network device in the method embodiment shown in FIG. 4.
  • the communication device 1100 may include a sending unit but not a receiving unit.
  • the communication device 1100 may include a receiving unit instead of a transmitting unit. Specifically, it may depend on whether the above solution executed by the communication device 1100 includes a sending action and a receiving action.
  • transceiver unit 1110 and processing unit 1120 can be obtained directly by referring to the relevant descriptions in the method embodiment shown in FIG. 4, and will not be described again here.
  • the communication device 1200 includes a processor 1210 and an interface circuit 1220 .
  • the processor 1210 and the interface circuit 1220 are coupled to each other.
  • the interface circuit 1220 may be a transceiver or an input-output interface.
  • the communication device 1200 may also include a memory 1230 for storing instructions executed by the processor 1210 or input data required for the processor 1210 to run the instructions or data generated after the processor 1210 executes the instructions.
  • the processor 1210 is used to perform the functions of the above-mentioned processing unit 1120, and the interface circuit 1220 is used to perform the functions of the above-mentioned transceiver unit 1110.
  • the relay device chip implements the functions of the relay device in the above method embodiment.
  • the chip of the relay device receives signals from other modules (such as radio frequency modules or antennas) in the relay device.
  • the signals may be sent by the network device to the relay device; or, the chip of the relay device sends signals to the relay device.
  • Other modules (such as radio frequency modules or antennas) send signals, which may be sent by relay devices to network devices.
  • the chip of the network device implements the functions of the network device in the above method embodiment.
  • the chip of the network device receives signals from other modules in the network device (such as radio frequency modules or antennas), and the signals may be sent by the relay device to the network device; or, the chip of the network device sends signals to other modules in the network device (such as Radio frequency module or antenna) sends a signal, which may be sent by the network device to the relay device.
  • FIG 13 is a schematic structural diagram of a base station.
  • the base station 3000 shown in Figure 13 can be applied in the system shown in Figure 1 to perform the functions of the network device in the above method embodiment, or can be regarded as an example of the network device shown in Figure 2.
  • the base station 3000 may include one or more radio frequency units, such as a remote radio unit (RRU) 3100 and one or more baseband units (BBUs) (also called distributed units (DU)). ))3200.
  • RRU remote radio unit
  • BBUs baseband units
  • DU distributed units
  • the RRU 3100 may be called a transceiver unit, corresponding to the transceiver unit 1110 in Figure 11.
  • the transceiver unit 3100 may also be called a transceiver, a transceiver circuit, a transceiver, or the like, and may include at least one antenna 3101 and a radio frequency unit 3102.
  • the transceiver unit 3100 may include a receiving unit and a sending unit.
  • the receiving unit may correspond to a receiver (or receiver or receiving circuit), and the sending unit may correspond to a transmitter (or transmitter or transmitting circuit).
  • the RRU 3100 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending instruction information and signals to relay devices.
  • the BBU 3200 part is mainly used for baseband processing, base station control, etc.
  • the RRU 3100 and the BBU 3200 may be physically installed together or physically separated, that is, a distributed base station.
  • the BBU 3200 is the control center of the base station and can also be called a processing unit. It can be the same as the processing unit 1120 in Figure 11 Correspondingly, it is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, etc.
  • the BBU processing unit
  • the BBU can be used to control the base station to execute the operation process related to the network device in the above method embodiment, for example, configuring signals, etc.
  • the BBU 3200 may be composed of one or more single boards. Multiple single boards may jointly support a single access standard wireless access network (such as an LTE network), or may support different access standard wireless access networks respectively. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 3200 also includes a memory 3201 and a processor 3202.
  • the memory 3201 is used to store necessary instructions and data.
  • the processor 3202 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation process of the network equipment in the above method embodiment.
  • the memory 3201 and processor 3202 may serve one or more single boards. In other words, the memory and processor can be set independently on each board. It is also possible for multiple boards to share the same memory and processor. In addition, necessary circuits can also be installed on each board.
  • the base station 3000 shown in Figure 13 can implement various processes involving network equipment in the method embodiment shown in Figure 4 .
  • the operations and/or functions of each module in the base station 3000 are respectively intended to implement the corresponding processes in the above method embodiments.
  • the above-mentioned BBU 3200 can be used to perform the actions implemented internally by the network device described in the previous method embodiment, and the RRU 3100 can be used to perform the actions described in the previous method embodiment for the network device to send to or receive from the relay device.
  • the RRU 3100 can be used to perform the actions described in the previous method embodiment for the network device to send to or receive from the relay device.
  • processor in the embodiment of the present application can be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or application-specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor can be a microprocessor or any conventional processor.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • This application also provides a communication system, which includes the aforementioned network equipment, relay equipment, and terminal equipment.
  • the computer program product includes: a computer program (which can also be called a code, or an instruction).
  • a computer program which can also be called a code, or an instruction.
  • the computer program When the computer program is run, it causes the computer to execute the relay in the embodiment shown in Figure 4 A method performed by a device or a method performed by a network device.
  • This application also provides a computer-readable storage medium that stores a computer program (which may also be called a code, or an instruction).
  • a computer program which may also be called a code, or an instruction.
  • the computer program When the computer program is run, the computer is caused to perform the method performed by the relay device or the method performed by the network device in the embodiment shown in FIG. 4 .
  • unit may be used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the unit described as a separate component may or may not be physically separated, and the component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Some 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 can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)) wait.
  • this function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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

Abstract

La présente demande concerne un procédé d'acheminement de signaux et un appareil associé. Le procédé comprend les étapes suivantes : un dispositif de relais reçoit des premières informations d'indication en provenance d'un dispositif de réseau, les premières informations d'indication étant utilisées pour indiquer une valeur seuil de qualité de signal, et la valeur seuil étant utilisée pour déterminer un signal qui nécessite de rapporter un résultat de mesure; le dispositif de relais effectue une mesure sur la base d'un signal reçu, et rapporte au dispositif de réseau un rapport de mesure correspondant à un signal ayant une qualité de réception atteignant la valeur seuil, aidant ainsi le dispositif de réseau à déterminer un faisceau d'une liaison d'amenée (« backhaul ») en fonction du rapport de mesure. Puisque le rapport de mesure est généré sur la base d'un signal ayant une qualité de signal atteignant le seuil, le faisceau déterminé de la liaison d'amenée peut permettre au dispositif de relais d'obtenir une meilleure qualité de réception pour un signal envoyé par le dispositif de réseau. Ainsi, afin de satisfaire une exigence de couverture du dispositif de relais, le dispositif de relais peut multiplexer une plus grande proportion de signaux envoyés par le dispositif de réseau pour un terminal connecté directement, réduisant ainsi le nombre de signaux supplémentaires envoyés par le dispositif de réseau pour le dispositif de relais, si bien que le surdébit peut être économisé.
PCT/CN2023/111329 2022-08-11 2023-08-04 Procédé d'acheminement de signaux et appareil associé WO2024032514A1 (fr)

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CN202210961953.9A CN117676665A (zh) 2022-08-11 2022-08-11 用于信号转发的方法及相关装置

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