WO2024067426A1 - Procédé de transfert de signal et appareil associé - Google Patents

Procédé de transfert de signal et appareil associé Download PDF

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Publication number
WO2024067426A1
WO2024067426A1 PCT/CN2023/120884 CN2023120884W WO2024067426A1 WO 2024067426 A1 WO2024067426 A1 WO 2024067426A1 CN 2023120884 W CN2023120884 W CN 2023120884W WO 2024067426 A1 WO2024067426 A1 WO 2024067426A1
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Prior art keywords
information
time
indication
network device
backhaul link
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PCT/CN2023/120884
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English (en)
Chinese (zh)
Inventor
彭中冲
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 WO2024067426A1 publication Critical patent/WO2024067426A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • the present application relates to the field of wireless communications, and in particular to a signal forwarding method and related devices.
  • Beamforming technology is used to limit the energy of the transmitted signal within a certain beam direction, thereby increasing the signal reception efficiency, expanding the transmission range of wireless signals, and reducing signal interference, thereby achieving higher communication efficiency and obtaining higher network capacity.
  • the distance between the network device and the terminal device is relatively far, and the corresponding path loss is high, resulting in a decrease in communication quality, or even causing the terminal device to be unable to communicate directly with the network device.
  • a known method is to use a relay device to assist the communication between the network device and the terminal device. 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 network device can send a control signal to the terminal device through the relay device to schedule the uplink and downlink transmission between the terminal device and the network device. Therefore, the network device needs to schedule the relay device so that the relay device can assist the transmission between the network device and the terminal device.
  • the present application provides a signal forwarding method and related devices, in order to perform beam scheduling on a relay device, thereby assisting the transmission between a network device and a terminal device and improving the transmission performance.
  • a signal forwarding method which can be applied to a relay device, for example, can be executed by the relay device, or can be executed by a component configured in the relay device (such as a chip, a chip system, etc.), or can be implemented by a logic module or software that can realize all or part of the functions of the relay device, and the present application does not limit this.
  • the method includes: receiving beam information and time information from a network device, wherein the beam information is used to indicate a backhaul link beam and/or an access link beam, and the time information is used to determine a time domain symbol at which the beam indicated by the beam information takes effect; and forwarding the received signal based on the beam information and the time information.
  • the network device may correspond to the first network device in the following embodiment, and may specifically be an access network device, such as a base station, etc.
  • the relay device may be used to assist the communication between the network device and the terminal device.
  • the terminal device communicating with the network device may be one or more, and this application does not limit this.
  • the network device can schedule the beam of the relay device, for example, by scheduling the beam through beam information, and indicating the time domain symbol when the scheduled beam takes effect through time information.
  • the relay device can respond to the scheduling of the network device and accurately use the corresponding beam to receive and forward signals on different time domain symbols, thereby realizing the scheduling of the relay device by the network device, which is conducive to the relay device better assisting the transmission between the network device and the terminal device and improving the transmission performance.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are in the same time slot, and K is a positive integer.
  • the above beam information can be used to indicate the effective beam in a time slot.
  • the network device can indicate the effective beam for each time slot, that is, the scheduling of the beam of the relay device can be changed in units of time slots. Therefore, the scheduling of the relay device by the network device is realized, which is conducive to the relay device to dynamically adjust the beam to assist the transmission between the network device and the terminal device and improve the transmission performance.
  • the beam information includes M backhaul link beam indication fields and N access link beam indication fields, the backhaul link beam indication field is used to indicate the backhaul link beam, The access link beam indication field is used to indicate the access link beam; M and N are positive integers.
  • M and N satisfy at least one of the following: N is less than or equal to 4; M is less than or equal to N; or M is 1.
  • N is less than or equal to 4 can be replaced by N is less than or equal to K max .
  • K max may be predefined by the protocol or preconfigured by the network device, which is not limited in this application.
  • the number of each indication field can be limited, thereby avoiding a large indication overhead.
  • the indication bit in the backhaul link indication field indicates the index value of a backhaul link beam, and the backhaul link beam corresponding to the index value is determined based on a predefined first mapping relationship, and the first mapping relationship includes the correspondence between the index values of multiple backhaul link beams and multiple groups of indication bits;
  • the indication bit in the access link indication field indicates the index value of an access link beam, and the access link beam corresponding to the index value is determined based on a predefined second mapping relationship, and the second mapping relationship includes the correspondence between the index values of multiple access link beams and multiple groups of indication bits.
  • the beam information can indicate the backhaul link beam and the access link beam through the indication fields corresponding to the backhaul link beam and the access link beam respectively, so that the relay device can determine the backhaul link beam and the access link beam according to each indication field.
  • the order of the M backhaul link beam indication fields in the beam information can be consistent with the order of the K time intervals, and the order of the N access link beam indication fields in the beam information can also be consistent with the order of the K time intervals, so that the time when the beam indicated by each indication field takes effect can be matched with the K time intervals.
  • This is conducive to the relay device accurately using the corresponding beam to receive and forward signals on different time domain symbols, and is conducive to the relay device better assisting the transmission between the network device and the terminal device, and improving the transmission performance.
  • the beam indicated by the beam information is effective in the K time intervals
  • the backhaul link beam indicated by the first backhaul link beam indication field in the M backhaul link beam indication fields is effective in multiple time intervals among the K time intervals; K is greater than M, K is greater than or equal to N, and K is a positive integer.
  • one or more backhaul link beams may be effective in multiple time intervals.
  • the backhaul link beams effective in multiple time intervals may be the same backhaul link beam.
  • the method also includes: receiving first indication information from the network device, wherein the first indication information is used to indicate the correspondence between the backhaul link beam indicated by the first backhaul link beam indication field and the multiple time intervals.
  • the M backhaul link beam indication fields may not correspond one-to-one to the K time intervals.
  • another indication information may be used to indicate the correspondence between the backhaul link beams and the multiple time intervals, so that each backhaul link beam can correspond to the K time intervals.
  • M can be set to a value smaller than K, which can save indication overhead.
  • the beam indicated by the beam information is effective in K time intervals, and the beam information includes K indication fields corresponding to the K time intervals.
  • the K indication fields are used to indicate the beams effective in the corresponding time intervals, and the beams effective in each time interval include a backhaul link beam and an access link beam.
  • the relay device can determine the effective backhaul link beam and access link beam in different time intervals. This helps the relay device to accurately use the corresponding beam to receive and forward signals in different time intervals, and helps the relay device to better assist the transmission between the network device and the terminal device, thereby improving the transmission performance.
  • each of the K indication fields includes a first subfield and a second subfield, the first subfield carrying a group of indication bits for indicating a backhaul link beam that is effective in a corresponding time interval, and the second subfield carrying a group of indication bits for indicating an access link beam that is effective in the corresponding time interval;
  • the indication bits in the first subfield are determined based on a predefined first mapping relationship, and the first mapping relationship includes a correspondence between index values of multiple backhaul link beams and multiple groups of indication bits;
  • the second subfield carries a group of indication bits for indicating an access link beam, and the indication bits in the second subfield are determined based on a predefined second mapping relationship, and the second mapping relationship includes a correspondence between index values of multiple access link beams and multiple groups of indication bits.
  • a backhaul link beam and an access link beam are indicated by a subfield respectively, thereby supporting any combination of a backhaul link beam and an access link beam effective in the same time interval.
  • each of the K indication fields carries a group of indication bits for indicating a combination of a backhaul link beam and an access link beam that is effective in a corresponding time interval
  • the indication bit indication in each indication field is determined based on a predefined third mapping relationship, wherein the third mapping relationship includes a correspondence between index values of multiple combinations of backhaul link beams and access link beams and multiple groups of indication bits.
  • the backhaul link beam and the access link beam are indicated through one indication field, thereby saving indication overhead.
  • the third mapping relationship may be predefined by the protocol or preconfigured by the network device.
  • the method also includes: receiving a radio resource control (RRC) message from the network device, wherein the RRC message carries information for indicating the third mapping relationship.
  • RRC radio resource control
  • the relay device may determine the third mapping relationship based on the information carried in the RRC message.
  • the relay device may store the third mapping relationship locally, and then determine the effective time of each beam based on the third mapping relationship after receiving the time information.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are located in a time slot, and the time information indicates the time domain symbol corresponding to each of the K time intervals in the time slot, K is greater than or equal to M, K is greater than or equal to N, and K is a positive integer.
  • the relay device can accurately determine the position of each time interval based on the time domain symbol corresponding to each time interval in the time slot indicated by the time information, and then accurately use the corresponding beam to receive and forward signals on different time domain symbols, which is conducive to the relay device to better assist the transmission between network equipment and terminal equipment and improve transmission performance.
  • the relay device Since the relay device has the same effective time for the receiving beam and the forwarding beam when the relay device is used to forward signals, the time domain symbols for the effective return link beam and the effective access link beam overlap in the time domain.
  • the time information includes K groups of indicator bits corresponding to the K time intervals, the values of the first indicator bit and the last indicator bit of each group of indicator bits are preset values, the number of bits of each group of indicator bits is used to determine the length of the corresponding time interval, and the first indicator bit of each group of indicator bits is used to determine the starting time domain symbol of the corresponding time interval.
  • the number of bits of the time information can be related to the number of time domain symbols and the number of time intervals in a time slot. Since K time intervals are in the same time slot, the maximum value of K does not exceed the preconfigured K max (K max is a positive integer), and the length of the time information can be the sum of the number of time domain symbols in a time slot and K max . Therefore, it does not bring a large indication overhead, and is very flexible and easy for relay equipment to parse.
  • the time information includes an index value corresponding to a combination of a starting symbol and a length of each of the K time intervals, and the starting symbol and length of each of the K time intervals corresponding to the index value are determined based on a predefined third mapping relationship, and the third mapping relationship includes a correspondence between multiple combinations of the starting symbol and length of each of the K time intervals and multiple index values.
  • the network device and the relay device can pre-store the third mapping relationship. Since the value of K is uncertain, the corresponding relationship between the combination of the starting symbol and the length of each time interval in the K time intervals and the index value when K traverses from 1 to K max can be pre-stored for the maximum value of K.
  • the network device can indicate the starting symbol and length of each time interval through the corresponding index.
  • the relay device can determine the length of the time slot used by the forwarding module to forward the signal, and then accurately determine the beams that are effective on different time domain symbols.
  • the length of the time domain symbol and/or the length of the time slot in which the time slot symbol is located corresponds to a sub-carrier space (SCS) used for forwarding a signal through the relay device.
  • SCS sub-carrier space
  • the SCS comes from an SCS set
  • the SCS set corresponds to a frequency range (FR) of a carrier
  • the SCS set includes one or more SCSs.
  • the method also includes: receiving second indication information from a network device, wherein the second indication information is used to indicate an index of the SCS.
  • the relay device can determine the time domain symbol length and/or time slot length according to the subcarrier spacing used by the forwarding module to forward the signal, and further determine the time domain symbol at which the beam indicated by the beam information takes effect according to the time domain symbol length and/or time slot length.
  • the second indication information can specifically indicate the index of the SCS in the SCS set when the SCS is from the SCS set corresponding to the FR of the carrier.
  • the relay device can determine the subcarrier spacing set to which the currently used subcarrier spacing belongs based on the FR of the currently used carrier and the correspondence between the FR of the carrier and the subcarrier spacing set, and then determine the currently used SCS according to the second indication information.
  • the network device can further indicate the type of CP.
  • the second indication information is also used to indicate the type of CP in the time slot.
  • the relay device can determine the number of time domain symbols in the time slot, and then accurately parse out the time information.
  • the method further includes: receiving third indication information from the network device, wherein the third indication information is used to indicate the time slot in which the beam indicated by the beam information begins to take effect.
  • the relay device can determine from which time slot the beam takes effect, that is, it can determine the time slot in which the beam takes effect.
  • the time domain position in which the beam takes effect can be determined by combining the time slot in which the beam takes effect and the time domain symbol in which the beam takes effect.
  • the third indication information is also used to indicate the duration of the effectiveness of the beam indicated by the beam information.
  • the beams that are effective in multiple time slots may be the same, and the time domain symbols of each beam in each time slot are also the same. Therefore, the network device can indicate the beams that are effective in multiple time slots through beam information and time information.
  • the specific duration of the multiple time slots is the duration of the beam effectiveness.
  • the duration of the beam effectiveness can also be indicated to the relay device by the network device. Based on the duration, the relay device can determine how long the most recently received beam information and time information is valid, and then accurately determine the beams that are effective in different time slots, and then use appropriate beams to receive signals and forward signals, so as to better assist the transmission between the network device and the terminal device and improve the transmission performance.
  • the method also includes: receiving resource configuration information from a network device, the resource configuration information being used to configure forwarding resources, and the forwarding resources being used by the relay device to forward the received signal; and forwarding the received signal based on the resource configuration information, as well as the beam information and the time information.
  • the relay device can determine the time domain position at which the beam takes effect after receiving the aforementioned beam information and time information, and then forward the signal based on the configured forwarding resources.
  • the method further includes: receiving second configuration information from an operation administration and maintenance network element (OAM), the second configuration information being used to configure a beam set of the relay device, the beam set comprising multiple beams.
  • OAM operation administration and maintenance network element
  • the second configuration information includes a correspondence between the multiple beams in the beam set and multiple beam indexes.
  • a signal forwarding method is provided, which can be applied to a network device, which can be the first network device in the following embodiment, and specifically can be an access network device, such as a base station, etc.
  • the method can be executed by the network device, or can be executed by a component (such as a chip, a chip system, etc.) configured in the network device, or can be implemented by a logic module or software that can implement all or part of the network device functions, and this application does not limit this.
  • the method includes: generating beam information and time information, wherein the beam information is used to indicate a backhaul link beam and/or an access link beam, and the time information is used to determine a time domain symbol at which the beam indicated by the beam information takes effect; and sending the beam information and the time information.
  • the network device can schedule the beam of the relay device, for example, by scheduling the beam through beam information, and indicating the time domain symbol when the scheduled beam takes effect through time information.
  • the relay device can respond to the scheduling of the network device and accurately use the corresponding beam to receive and forward signals on different time domain symbols, thereby realizing the scheduling of the relay device by the network device, which is conducive to the relay device better assisting the transmission between the network device and the terminal device and improving the transmission performance.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are in the same time slot, and K is a positive integer.
  • the above beam information can be used to indicate the beam that is effective in a time slot.
  • Each time slot indicates the effective beam, that is, the scheduling of the beam of the relay device can be changed in units of time slots. Therefore, the scheduling of the relay device by the network device is realized, which is conducive to the relay device to dynamically adjust the beam to assist the transmission between the network device and the terminal device and improve the transmission performance.
  • the beam information includes M backhaul link beam indication fields and N access link beam indication fields, the backhaul link beam indication field is used to indicate the backhaul link beam, and the access link beam indication field is used to indicate the access link beam; M and N are positive integers.
  • M and N satisfy at least one of the following: N is less than or equal to 4; M is less than or equal to N; or M is 1.
  • the indication bit in the backhaul link indication field indicates the index value of a backhaul link beam, and the backhaul link beam corresponding to the index value is determined based on a predefined first mapping relationship, and the first mapping relationship includes the correspondence between the index values of multiple backhaul link beams and multiple groups of indication bits;
  • the indication bit in the access link indication field indicates the index value of an access link beam, and the access link beam corresponding to the index value is determined based on a predefined second mapping relationship, and the second mapping relationship includes the correspondence between the index values of multiple access link beams and multiple groups of indication bits.
  • the beam information can indicate the backhaul link beam and the access link beam through the indication fields corresponding to the backhaul link beam and the access link beam respectively, so that the relay device can determine the backhaul link beam and the access link beam according to each indication field.
  • the order of the M backhaul link beam indication fields in the beam information can be consistent with the order of the K time intervals, and the order of the N access link beam indication fields in the beam information can also be consistent with the order of the K time intervals, so that the time when the beam indicated by each indication field takes effect can be matched with the K time intervals.
  • This is conducive to the relay device accurately using the corresponding beam to receive and forward signals on different time domain symbols, and is conducive to the relay device better assisting the transmission between the network device and the terminal device, and improving the transmission performance.
  • the beam indicated by the beam information is effective in the K time intervals
  • the backhaul link beam indicated by the first backhaul link beam indication field in the M backhaul link beam indication fields is effective in multiple time intervals among the K time intervals; K is greater than M, K is greater than or equal to N, and K is a positive integer.
  • one or more backhaul link beams may be effective in multiple time intervals.
  • the backhaul link beams effective in multiple time intervals may be the same backhaul link beam.
  • the method also includes: sending first indication information to the relay device, wherein the first indication information is used to indicate the correspondence between the backhaul link beam indicated by the first backhaul link beam indication field and the multiple time intervals.
  • the M backhaul link beam indication fields may not correspond one-to-one to the K time intervals.
  • another indication information may be used to indicate the correspondence between the backhaul link beams and the multiple time intervals, so that each backhaul link beam can correspond to the K time intervals.
  • M can be set to a value smaller than K, which can save indication overhead.
  • the beam indicated by the beam information is effective in K time intervals, and the beam information includes K indication fields corresponding to the K time intervals.
  • the K indication fields are used to indicate the beams effective in the corresponding time intervals, and the beams effective in each time interval include a backhaul link beam and an access link beam.
  • the relay device can determine the effective backhaul link beam and access link beam in different time intervals. This helps the relay device to accurately use the corresponding beam to receive and forward signals in different time intervals, and helps the relay device to better assist the transmission between the network device and the terminal device, thereby improving the transmission performance.
  • each of the K indication fields includes a first subfield and a second subfield, the first subfield carrying a group of indication bits for indicating a backhaul link beam effective in a corresponding time interval, and the second subfield carrying a group of indication bits for indicating an access link beam effective in a corresponding time interval;
  • the indication bits in the first subfield are determined based on a predefined first mapping relationship, the first mapping relationship including a correspondence between index values of multiple backhaul link beams and multiple groups of indication bits;
  • the second subfield carries a group of indication bits for indicating an access link beam, the indication bits in the second subfield are determined based on a predefined second mapping relationship, the second mapping relationship including index values of multiple access link beams.
  • a backhaul link beam and an access link beam are indicated by a subfield respectively, thereby supporting any combination of a backhaul link beam and an access link beam effective in the same time interval.
  • each of the K indication fields carries a group of indication bits for indicating a combination of a backhaul link beam and an access link beam that is effective in a corresponding time interval
  • the indication bit indication in each indication field is determined based on a predefined third mapping relationship, wherein the third mapping relationship includes a correspondence between index values of multiple combinations of backhaul link beams and access link beams and multiple groups of indication bits.
  • the backhaul link beam and the access link beam are indicated through one indication field, thereby saving indication overhead.
  • the method further includes: the network device sends an RRC message to the relay device, wherein the RRC message carries information for indicating the third mapping relationship.
  • the relay device may store the determined third mapping relationship locally, and after receiving the time information, determine the effective time of each beam based on the third mapping relationship.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are located in a time slot, and the time information indicates the time domain symbol corresponding to each of the K time intervals in the time slot, K is greater than or equal to M, K is greater than or equal to N, and K is a positive integer.
  • the relay device can accurately determine the position of each time interval based on the time domain symbol corresponding to each time interval in the time slot indicated by the time information, and then accurately use the corresponding beam to receive and forward signals on different time domain symbols, which is conducive to the relay device to better assist the transmission between network equipment and terminal equipment and improve transmission performance.
  • the effective time of the receiving beam and the forwarding beam of the relay device is the same, therefore, the time domain symbols when the above-mentioned return link beam takes effect and the time domain symbols when the access link beam takes effect overlap in the time domain.
  • the time information includes K groups of indicator bits corresponding to the K time intervals, the values of the first indicator bit and the last indicator bit of each group of indicator bits are preset values, the number of bits of each group of indicator bits is used to determine the length of the corresponding time interval, and the first indicator bit of each group of indicator bits is used to determine the starting time domain symbol of the corresponding time interval.
  • the number of bits of the time information can be related to the number of time domain symbols and the number of time intervals in a time slot. Since K time intervals are in the same time slot, the maximum value of K does not exceed the preconfigured K max (K max is a positive integer), and the length of the time information can be the sum of the number of time domain symbols in a time slot and K max . Therefore, it does not bring a large indication overhead, and is very flexible and easy for relay equipment to parse.
  • the time information includes an index value corresponding to a combination of a starting symbol and a length of each of the K time intervals, and the starting symbol and length of each of the K time intervals corresponding to the index value are determined based on a predefined third mapping relationship, and the third mapping relationship includes a correspondence between multiple combinations of the starting symbol and length of each of the K time intervals and multiple index values.
  • the network device and the relay device can pre-store the third mapping relationship. Since the value of K is uncertain, the corresponding relationship between the combination of the starting symbol and the length of each time interval in the K time intervals and the index value when K traverses from 1 to K max can be pre-stored for the maximum value of K.
  • the network device can indicate the starting symbol and length of each time interval through the corresponding index.
  • the relay device can determine the length of the time slot used by the forwarding module to forward the signal, and then accurately determine the beams that are effective on different time domain symbols.
  • the length of the time slot in which the time domain symbol is located corresponds to the SCS used to forward the signal through the relay device.
  • the SCS comes from an SCS set, the SCS set corresponds to a frequency range (frequency range, FR) of a carrier, and the SCS set includes one or more SCSs.
  • the method also includes: sending second indication information to the relay device, wherein the second indication information is used to indicate the index of the SCS.
  • the relay device can determine the time slot length according to the subcarrier spacing used by the forwarding module to forward the signal, and further determine the time domain symbol at which the beam indicated by the beam information takes effect according to the time slot length. Therefore, the relay device can accurately determine the beams that are effective on different time domain symbols, and then use the appropriate beams to receive and forward signals, better assisting the transmission between network devices and terminal devices and improving transmission performance.
  • the second indication information may specifically indicate the index of the SCS in the SCS set.
  • the relay device can determine the subcarrier spacing set to which the currently used subcarrier spacing belongs based on the FR of the currently used carrier and the correspondence between the FR of the carrier and the subcarrier spacing set, and then determine the currently used SCS according to the second indication information.
  • the network device may further indicate the type of CP.
  • the second indication information is also used to indicate the type of the cyclic prefix in the time slot.
  • the method further includes: sending third indication information to the relay device, wherein the third indication information is used to indicate the time slot in which the beam indicated by the beam information begins to take effect.
  • the relay device can determine from which time slot the beam takes effect, that is, it can determine the time slot in which the beam takes effect.
  • the time domain position in which the beam takes effect can be determined by combining the time slot in which the beam takes effect and the time domain symbol in which the beam takes effect.
  • the third indication information is also used to indicate the duration of the effectiveness of the beam indicated by the beam information.
  • the beams that are effective in multiple time slots may be the same, and the time domain symbols of each beam in each time slot are also the same. Therefore, the network device can indicate the beams that are effective in multiple time slots through beam information and time information.
  • the specific duration of the multiple time slots is the duration of the beam effectiveness.
  • the duration of the beam effectiveness can also be indicated to the relay device by the network device. Based on the duration, the relay device can determine how long the most recently received beam information and time information are valid, and then accurately determine the beams that are effective in different time slots, and then use appropriate beams to receive signals and forward signals, so as to better assist the transmission between the network device and the terminal device and improve the transmission performance.
  • the method further includes: the network device sends resource configuration information to the relay device, the resource configuration information is used to configure forwarding resources, and the forwarding resources are used by the relay device to forward the received signal.
  • the relay device can determine the time domain position at which the beam takes effect after receiving the aforementioned beam information and time information, and then forward the signal based on the configured forwarding resources.
  • the method further includes: receiving second configuration information from the OAM, where the second configuration information is used to configure a beam set of the relay device, where the beam set includes multiple beams.
  • the second configuration information includes a correspondence between the multiple beams in the beam set and multiple beam indexes.
  • a signal forwarding method which can be applied to a communication system including a network device and a relay device.
  • the method includes: the network device generates beam information and time information, the beam information is used to indicate a backhaul link beam and/or an access link beam, and the time information is used to determine a time domain symbol at which the beam indicated by the beam information takes effect; the network device sends the beam information and the time information to the relay device; the relay device forwards the received signal based on the received beam information and the time information.
  • the network device can schedule the beam of the relay device, for example, by scheduling the beam through beam information, and indicating the time domain symbol when the scheduled beam takes effect through time information.
  • the relay device can respond to the scheduling of the network device and accurately use the corresponding beam to receive and forward signals on different time domain symbols, thereby realizing the scheduling of the relay device by the network device, which is conducive to the relay device better assisting the transmission between the network device and the terminal device and improving the transmission performance.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are in the same time slot, and K is a positive integer.
  • the above beam information can be used to indicate the effective beam in a time slot.
  • the network device can indicate the effective beam for each time slot, that is, the scheduling of the beam of the relay device can be changed in units of time slots. Therefore, the scheduling of the relay device by the network device is realized, which is conducive to the relay device to dynamically adjust the beam to assist the transmission between the network device and the terminal device and improve the transmission performance.
  • the beam information includes M backhaul link beams.
  • An indication field and N access link beam indication fields the backhaul link beam indication field is used to indicate the backhaul link beam, and the access link beam indication field is used to indicate the access link beam; M and N are positive integers.
  • M and N satisfy at least one of the following: N is less than or equal to 4; M is less than or equal to N; or M is 1.
  • the indication bit in the backhaul link indication field indicates the index value of a backhaul link beam, and the backhaul link beam corresponding to the index value is determined based on a predefined first mapping relationship, and the first mapping relationship includes the correspondence between the index values of multiple backhaul link beams and multiple groups of indication bits;
  • the indication bit in the access link indication field indicates the index value of an access link beam, and the access link beam corresponding to the index value is determined based on a predefined second mapping relationship, and the second mapping relationship includes the correspondence between the index values of multiple access link beams and multiple groups of indication bits.
  • the beam indicated by the beam information is effective in the K time intervals
  • the backhaul link beam indicated by the first backhaul link beam indication field in the M backhaul link beam indication fields is effective in multiple time intervals among the K time intervals; K is greater than M, K is greater than or equal to N, and K is a positive integer.
  • the method also includes: the network device sends first indication information to the relay device, wherein the first indication information is used to indicate the correspondence between the backhaul link beam indicated by the first backhaul link beam indication field and the multiple time intervals.
  • the beam indicated by the beam information is effective in K time intervals, and the beam information includes K indication fields corresponding to the K time intervals.
  • the K indication fields are used to indicate the beams effective in the corresponding time intervals, and the beams effective in each time interval include a backhaul link beam and an access link beam.
  • each of the K indication fields includes a first subfield and a second subfield, the first subfield carrying a group of indication bits for indicating a backhaul link beam that is effective in a corresponding time interval, and the second subfield carrying a group of indication bits for indicating an access link beam that is effective in the corresponding time interval;
  • the indication bits in the first subfield are determined based on a predefined first mapping relationship, and the first mapping relationship includes a correspondence between index values of multiple backhaul link beams and multiple groups of indication bits;
  • the second subfield carries a group of indication bits for indicating an access link beam, and the indication bits in the second subfield are determined based on a predefined second mapping relationship, and the second mapping relationship includes a correspondence between index values of multiple access link beams and multiple groups of indication bits.
  • each of the K indication fields carries a group of indication bits for indicating a combination of a backhaul link beam and an access link beam that is effective in a corresponding time interval
  • the indication bit indication in each indication field is determined based on a predefined third mapping relationship, wherein the third mapping relationship includes a correspondence between index values of multiple combinations of backhaul link beams and access link beams and multiple groups of indication bits.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are located in a time slot, and the time information indicates the time domain symbol corresponding to each of the K time intervals in the time slot, K is greater than or equal to M, K is greater than or equal to N, and K is a positive integer.
  • the time information includes K groups of indicator bits corresponding to the K time intervals, the values of the first indicator bit and the last indicator bit of each group of indicator bits are preset values, the number of bits of each group of indicator bits is used to determine the length of the corresponding time interval, and the first indicator bit of each group of indicator bits is used to determine the starting time domain symbol of the corresponding time interval.
  • the time information includes an index value corresponding to a combination of a starting symbol and a length of each of the K time intervals, and the starting symbol and length of each of the K time intervals corresponding to the index value are determined based on a predefined third mapping relationship, and the third mapping relationship includes a correspondence between multiple combinations of the starting symbol and length of each of the K time intervals and multiple index values.
  • the method also includes: the network device sends an RRC message to the relay device, the RRC message carries information for indicating the third mapping relationship; and the relay device determines the third mapping relationship based on the received RRC message.
  • the relay device may store the determined third mapping relationship locally, and after receiving the time information, determine the effective time of each beam based on the third mapping relationship.
  • the length of the time slot in which the time domain symbol is located corresponds to the SCS used to forward the signal through the relay device.
  • the SCS comes from an SCS set, the SCS set corresponds to a frequency range (frequency range, FR) of a carrier, and the SCS set includes one or more SCSs.
  • the method also includes: sending second indication information to the relay device, wherein the second indication information is used to indicate the index of the SCS.
  • the second indication information may specifically indicate the index of the SCS in the SCS set.
  • the second indication information is also used to indicate the type of CP in the time slot.
  • the method further includes: sending third indication information to the relay device, wherein the third indication information is used to indicate the time slot in which the beam indicated by the beam information begins to take effect.
  • the third indication information is also used to indicate the duration of the effectiveness of the beam indicated by the beam information.
  • the method also includes: the network device sends resource configuration information to the relay device, the resource configuration information is used to configure forwarding resources, and the forwarding resources are used by the relay device to forward the received signal; the relay device forwards the received signal based on the resource configuration information, the beam information and the time information.
  • the method also includes: the network device and the relay device receive second configuration information from the OAM, the second configuration information is used to configure a beam set of the relay device, and the beam set includes multiple beams.
  • the second configuration information includes a correspondence between the multiple beams in the beam set and multiple beam indexes.
  • the beam information and the time information are carried in downlink control information (DCI).
  • DCI downlink control information
  • the time domain symbol is: an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, or an orthogonal frequency division multiplexing (DFT-spread-OFDM, DFT-s-OFDM) symbol based on discrete Fourier transform (DFT).
  • OFDM orthogonal frequency division multiplexing
  • DFT-spread-OFDM DFT-spread-OFDM
  • DFT-s-OFDM discrete Fourier transform
  • a communication device comprising a unit for implementing the method in the first aspect or any possible implementation of the first aspect. It should be understood that each unit can implement the corresponding function by executing a computer program.
  • the communication device includes a transceiver unit, which is used to receive beam information and time information from a network device, wherein the beam information is used to indicate a backhaul link beam and/or an access link beam, and the time information is used to determine a time domain symbol at which the beam indicated by the beam information takes effect; the transceiver unit is used to forward the received signal based on the beam information and the time information.
  • a transceiver unit which is used to receive beam information and time information from a network device, wherein the beam information is used to indicate a backhaul link beam and/or an access link beam, and the time information is used to determine a time domain symbol at which the beam indicated by the beam information takes effect; the transceiver unit is used to forward the received signal based on the beam information and the time information.
  • the beam information includes M backhaul link beam indication fields and N access link beam indication fields, the backhaul link beam indication field is used to indicate the backhaul link beam, and the access link beam indication field is used to indicate the access link beam; M and N are positive integers.
  • M and N satisfy at least one of the following: N is less than or equal to 4; M is less than or equal to N; or M is 1.
  • the beam indicated by the beam information is effective in the K time intervals
  • the backhaul link beam indicated by the first backhaul link beam indication field in the M backhaul link beam indication fields is effective in multiple time intervals among the K time intervals; K is greater than M, K is greater than or equal to N, and K is a positive integer.
  • the transceiver unit is also used to receive first indication information from the network device, and the first indication information is used to indicate the correspondence between the backhaul link beam indicated by the first backhaul link beam indication field and the multiple time intervals.
  • the transceiver unit is also used to receive an RRC message from the network device, the RRC message carrying information for indicating a third mapping relationship, the third mapping relationship including a correspondence between index values of multiple combinations of backhaul link beams and access link beams and multiple groups of indication bits.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are located in a time slot, and the time information indicates the time domain symbol corresponding to each of the K time intervals in the time slot, K is greater than or equal to M, K is greater than or equal to N, and K is a positive integer.
  • the length of the time slot in which the time domain symbol is located corresponds to the subcarrier spacing SCS used for forwarding the signal through the relay device.
  • the SCS comes from an SCS set, the SCS set corresponds to a frequency range FR of a carrier, and the SCS set includes one or more SCSs; the second indication information indicates an index of the SCS in the SCS set.
  • the transceiver unit is also used to receive second indication information from the network device, and the second indication information is used to indicate the index of the SCS.
  • the second indication information is also used to indicate the type of CP in the time slot.
  • the transceiver unit is also used to receive third indication information from a network device, and the third indication information is used to indicate the time slot in which the beam indicated by the beam information begins to take effect.
  • the third indication information is also used to indicate the duration of the effectiveness of the beam indicated by the beam information.
  • the transceiver unit is also used to receive resource configuration information from a network device, and the resource configuration information is used to cooperate with forwarding resources, and the forwarding resources are used by the relay device to forward the received signal; the transceiver unit is also used to forward the received signal based on the resource configuration information, the beam information and the time information.
  • the transceiver unit is also used to receive second configuration information from an operation administration and maintenance network element OAM, and the second configuration information is used to configure a beam set of the relay device, and the beam set includes multiple beams.
  • the second configuration information includes a correspondence between the multiple beams in the beam set and multiple beam indexes.
  • a communication device comprising a processor, which can be used to implement the method in the aforementioned first aspect or any possible implementation of the first aspect through a logic circuit or executing code instructions.
  • the device also includes a communication interface, which is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device.
  • the device also includes a memory for storing code instructions executed by the processor.
  • a communication device comprising a unit for implementing the method in the aforementioned second aspect or any possible implementation of the second aspect. It should be understood that each unit can implement the corresponding function by executing a computer program.
  • the communication device includes: a processing unit and a transceiver unit.
  • the processing unit is used to generate beam information and time information, wherein the beam information is used to indicate a backhaul link beam and/or an access link beam, and the time information is used to determine a time domain symbol at which the beam indicated by the beam information takes effect; and the transceiver unit is used to send the beam information and the time information to a relay device.
  • the beam information includes M backhaul link beam indication fields and N access link beam indication fields, the backhaul link beam indication field is used to indicate the backhaul link beam, and the access link beam indication field is used to indicate the access link beam; M and N are positive integers.
  • M and N satisfy at least one of the following: N is less than or equal to 4; M is less than or equal to N; or M is 1.
  • the beam indicated by the beam information is effective in the K time intervals
  • the backhaul link beam indicated by the first backhaul link beam indication field in the M backhaul link beam indication fields is effective in multiple time intervals among the K time intervals; K is greater than M, K is greater than or equal to N, and K is a positive integer.
  • the transceiver unit is also used to send first indication information to the relay device, where the first indication information is used to indicate the correspondence between the backhaul link beam indicated by the first backhaul link beam indication field and the multiple time intervals.
  • the beam indicated by the beam information is effective in K time intervals, the K time intervals are located in a time slot, and the time information indicates the time domain symbol corresponding to each of the K time intervals in the time slot, K is greater than or equal to M, K is greater than or equal to N, and K is a positive integer.
  • the transceiver unit is also used to send an RRC message to the relay device, where the RRC message is used to indicate information of a third mapping relationship, wherein the third mapping relationship includes a correspondence between index values of multiple combinations of backhaul link beams and access link beams and multiple groups of indication bits.
  • the length of the time slot in which the time domain symbol is located corresponds to the subcarrier spacing SCS used for forwarding the signal through the relay device.
  • the SCS comes from an SCS set, the SCS set corresponds to a frequency range FR of a carrier, and the SCS set includes one or more SCSs; the second indication information indicates an index of the SCS in the SCS set.
  • the transceiver unit is also used to send second indication information to the relay device, and the second indication information is used to indicate the index of the SCS.
  • the second indication information is also used to indicate the type of CP in the time slot.
  • the sending unit is further used to send third indication information to the relay device, and the third indication information is used to indicate the time slot in which the beam indicated by the beam information begins to take effect.
  • the third indication information is also used to indicate the duration of the effectiveness of the beam indicated by the beam information.
  • the sending unit is also used to send resource configuration information to the relay device, and the resource configuration information is used to cooperate with forwarding resources, and the forwarding resources are used by the relay device to forward the received signal.
  • a communication device comprising a processor, which can be used to implement the method in the aforementioned first aspect or any possible implementation of the first aspect through a logic circuit or executing code instructions.
  • the device also includes a communication interface, which is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device.
  • the device also includes a memory for storing code instructions executed by the processor.
  • the communication device in the fourth aspect or the fifth aspect is a relay device.
  • the communication device in the sixth aspect or the seventh aspect is a network device.
  • a communication system comprising the communication device described in the fourth aspect or the fifth aspect, and the communication device described in the sixth aspect or the seventh aspect.
  • a computer-readable storage medium in which a computer program or instruction is stored.
  • the method of the first aspect or any possible implementation of the first aspect is implemented, or the method of the second aspect or any possible implementation of the second aspect is implemented, or the method of the third aspect or any possible implementation of the third aspect is implemented.
  • a computer program product comprising instructions, which, when executed, implements the method in the first aspect or any possible implementation of the first aspect, or implements the method in the second aspect or any possible implementation of the second aspect, or implements the method in the third aspect or any possible implementation of the third aspect.
  • FIG1 is a schematic diagram of a system architecture applicable to the method provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the structure of a network device provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of the structure of a relay device provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.
  • FIG5 is a schematic flow chart of a signal forwarding method provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of a two-dimensional coverage range of a beam or a beam subset provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of adjacent coverage areas of different beams or beam subsets provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of adjacent coverage areas of different beams or beam subsets provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of an association between a beam and a signal provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of the coverage of different beams or beam subsets intersecting each other provided in an embodiment of the present application;
  • FIG11 is a schematic diagram of the relative relationship between beams or beam subsets provided in an embodiment of the present application.
  • 12A and 12B are schematic diagrams of the relationship between a forwarding resource set and a forwarding resource provided in an embodiment of the present application;
  • FIG13 is a schematic diagram of a time slot in which a beam starts to take effect provided by an embodiment of the present application.
  • FIG14 is a schematic diagram of a time slot and a time domain symbol at which a beam starts to take effect provided by an embodiment of the present application;
  • FIG19 is a schematic diagram of time information provided by an embodiment of the present application.
  • 20 to 24 are schematic diagrams of beam information and time information provided in embodiments of the present application.
  • FIG25 is a schematic diagram of beam information provided in an embodiment of the present application.
  • 26 and 27 are schematic block diagrams of communication devices provided in embodiments of the present application.
  • Figure 28 is a schematic diagram of the structure of the base station provided in an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • SL sidelink
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • 5G mobile communication system may include non-standalone (NSA) and/or standalone (SA).
  • the technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system. This application does not limit this.
  • 6G sixth generation
  • the access network device in the present application may be a device for communicating with a terminal, or may be a device for accessing a terminal to a wireless network.
  • the access network device may be a node in a wireless access network.
  • the access network device may be a base station (BS), an evolved NodeB (eNodeB), a transmission reception point (TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a wireless fidelity (Wi-Fi) access point (AP), a mobile switching center, a next generation NodeB (gNB) in a 5G mobile communication system, a next generation base station in a sixth generation (6G) mobile communication system, or a base station in a future mobile communication system.
  • BS base station
  • eNodeB evolved NodeB
  • TRP transmission reception point
  • HNB home base station
  • Wi-Fi wireless fidelity
  • AP wireless fidelity
  • gNB next generation NodeB
  • 5G mobile communication system
  • the access network device may also be a module or unit that completes some functions of a base station, for example, a centralized unit (CU), a distributed unit (DU), an RRU or a baseband unit (BBU), etc.
  • the access 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.
  • the access network equipment can also be access network equipment in non-terrestrial networks (NTN), that is, the access network equipment can be deployed on high-altitude platforms or satellites.
  • NTN non-terrestrial networks
  • the access network equipment can be a macro base station, a micro base station, an indoor station, a relay node, a donor node, etc. Of course, the access network equipment can also be a node in the core network.
  • the access network equipment provides services for the cell.
  • the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the access network equipment.
  • the cell can belong to a macro base station (for example, macro eNB or macro gNB, etc.) or a base station corresponding to a small cell.
  • the small cells here may 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-speed data transmission services.
  • the terminal device in this application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • UE user equipment
  • a terminal device can be a device that provides voice/data connectivity to users, such as a handheld device with wireless connection function, a vehicle-mounted device, etc.
  • some examples of terminal devices can be: mobile phones, tablet computers (pad), computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile Internet devices (mobile internet devices, MID), virtual reality (virtual reality, VR) devices, augmented reality (augmented reality, AR) devices, wireless terminals in industrial control (industrial control), wireless terminals in self-driving, drones, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety (transportation safety) devices, etc.
  • wireless terminals in smart cities wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolved public land mobile communication networks (PLMN), etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems
  • vehicle-mounted devices wearable devices
  • PLMN public land mobile communication networks
  • wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.
  • the terminal device can also be a terminal device in the 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-machine interconnection and object-to-object interconnection.
  • IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrow band (NB) technology, for example.
  • NB narrow band
  • terminal devices can also include sensors such as smart printers, train detectors, and gas stations. Their main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from access network devices, and sending electromagnetic waves to transmit uplink data to access network devices.
  • sensors such as smart printers, train detectors, and gas stations.
  • Their main functions include collecting data (part of the terminal equipment), receiving control information and downlink data from access network devices, and sending electromagnetic waves to transmit uplink data to access network devices.
  • the relay device has a signal forwarding (or reflection) function, which can amplify the signal, and can be referred to as relaying.
  • the relay device can also shift the carrier frequency of the signal, or can also demodulate the signal and re-modulate it before forwarding it, or can also reduce the noise of the signal before forwarding it. Therefore, the relay device can forward the received signal after performing any one or more of the following processing: amplification, demodulation, frequency shifting, and noise reduction.
  • relay there is another form of relay, called a reflector, or a reflecting surface, or other possible names: intelligent reflecting surface, reflecting array, reconfigurable reflecting surface (RIS), intelligent reflecting array, reflector, intelligent reflector, backscatter device, passive device, semi-passive device, ambient signal device.
  • RIS reconfigurable reflecting surface
  • Relay equipment can also be considered as a special form of terminal equipment. If the control capability of the network side over the relay equipment is considered, it can be divided into non-intelligent relay and intelligent relay; or it can be divided into uncontrolled repeater and network controlled repeater (NetConRepeater or NCR).
  • the access network equipment can control the intelligent relay to perform more functions to enhance performance, such as relay transmission power control, relay amplification gain control, relay beam scanning control, and at least one of relay precoding control, on/off control, and uplink/downlink forwarding control.
  • a typical relay device has two antenna panels, one of which is used to communicate with the access network device, which can be called the backhaul side; the other is used to communicate with the terminal device, which can be called the access side.
  • the access network device which can be called the backhaul side
  • the access side the terminal device
  • only one antenna panel is used to receive signals, and the received signals are amplified and then forwarded or sent by the other antenna panel.
  • Each panel of the relay can be composed of multiple antennas, and a beam 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 the signal, it is necessary to align the beam of the relay access side with 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 access network device through at least one upper-level relay node and accept the control of the access network device.
  • the upper-level relay node can be considered as a special access network device; or the relay node can establish a connection with the terminal device through at least one lower-level relay node.
  • the lower-level relay node can be considered as a special terminal device.
  • relay device In this document, relay device, relay, and relay node appear alternately and have the same meaning.
  • Beam refers to the main lobe of the radiation pattern of an antenna or antenna array, which is formed by superimposing the radiation signals of each antenna module.
  • a beam can be understood as a spatial filter or spatial parameters.
  • the beam used to send signals can be called a transmission beam (Tx beam), which can be a spatial domain transmit filter or spatial transmit parameters (spatial transmit parameters, spatial Tx parameters).
  • a transmission beam can refer to the distribution of signal strength in different directions of space after the signal is transmitted by the antenna.
  • a beam used to receive signals can be called a reception beam (Rx beam), which can be a spatial domain receive filter or spatial receive parameters (spatial receive parameters, spatial Rx parameters).
  • a reception beam can refer to the signal strength distribution of wireless signals received from an antenna in different directions of space.
  • the technology for forming the beam may be a beamforming technology or other technologies.
  • the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology, etc. This application does not limit this.
  • Beam, spatial filter, spatial parameter, etc. are only a few possible names listed in this article. This application does not exclude the possibility of defining other terms in future agreements to express the same or similar meanings.
  • Beam width including beam horizontal width (beam horizental width) and beam vertical width (beam vertical width);
  • a reference beam direction may include a reference peak beam direction and a reference beam center direction
  • EIRP effective isotropic radiated power
  • the beam can be generated by a specific TRP.
  • a TRP is an antenna array that includes one or more antenna elements and can be used by the network. It is located at a specific geographical location in a specific area. One TRP can correspond to one coverage area.
  • 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 with a QCL relationship with the antenna port, or the two antenna 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, and spatial reception parameters.
  • the spatial reception parameters may include one or more of the following: angle of arrival (AOA), average AOA, AOA spread, angle of departure (AOD), average departure angle AOD, AOD spread, receiving antenna spatial correlation parameters, transmitting antenna spatial correlation parameters, transmitting beam (or transmitting beam), receiving beam, and resource identifier.
  • AOA angle of arrival
  • AOA spread angle of departure
  • AOD angle of departure
  • AOD spread average departure angle AOD
  • receiving antenna spatial correlation parameters transmitting antenna spatial correlation parameters
  • transmitting beam or transmitting beam
  • receiving beam and resource identifier.
  • the above QCL relationship can be divided into the following four types based on different parameters:
  • Type A Doppler shift, Doppler spread, average delay, delay spread;
  • Type B Doppler shift, Doppler spread
  • Type C Doppler shift, average delay
  • Type D space receiving parameters.
  • the QCL involved in the embodiment of the present application is a QCL of type D.
  • the QCL may be understood as a QCL of type D, that is, a QCL defined based on spatial reception parameters.
  • the QCL relationship between a port of a downlink signal and a port of a downlink signal, or between a port of an uplink signal and a port of an uplink signal can be that the two signals have the same AOA or AOD, which is used to indicate that they have the same receiving beam or transmitting beam.
  • the beam reciprocity can be used to determine the uplink transmitting beam according to the downlink receiving beam, or to determine the downlink receiving beam according to the uplink transmitting beam.
  • the signal transmitted on the port with a QCL relationship may also have a corresponding beam, and the corresponding beam includes at least one of the following: the same receiving beam, the same transmitting beam, a transmitting beam corresponding to the receiving beam (corresponding to a scenario with reciprocity), and a receiving beam corresponding to the transmitting beam (corresponding to a scenario with reciprocity).
  • the signals transmitted on the ports having a QCL relationship can also be understood as signals received or sent using the same spatial filter.
  • the spatial filter can be at least one of the following: precoding, antenna port weight, antenna port phase deflection, antenna port amplitude gain.
  • the signal transmitted on the port with a QCL relationship can also be understood as having a corresponding beam pair connection (beam pair link, BPL), and the corresponding BPL includes at least one of the following: the same downlink BPL, the same uplink BPL, the uplink BPL corresponding to the downlink BPL, and the downlink BPL corresponding to the uplink BPL.
  • BPL beam pair link
  • the spatial reception parameter (ie, QCL of type D) may be understood as a parameter for indicating the directional information of the reception beam.
  • Transmission configuration indicator (TCI) state can be used to indicate the QCL relationship between two reference signals.
  • the network device can configure the TCI state list for the terminal device through high-level signaling (such as radio resource control (RRC) message), and can activate or indicate one or more TCI states through high-level signaling (such as medium access control-control element (MAC-CE)) or physical layer signaling (such as downlink control information (DCI)).
  • RRC radio resource control
  • MAC-CE medium access control-control element
  • DCI downlink control information
  • the configuration information of a TCI state may include the identifiers of one or two reference signal resources and the associated QCL type.
  • the terminal device can demodulate the physical downlink control channel (PDCCH) or the physical downlink shared channel (PDSCH) according to the indication of the TCI status.
  • 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.
  • Time domain behavior can include periodic (P), semi-persistent (SP), and aperiodic (AP).
  • P periodic
  • SP semi-persistent
  • AP aperiodic
  • the time domain behavior can be indicated by a time domain behavior parameter, and different time domain behavior parameters indicate different time domain behaviors.
  • the network device can indicate the time domain behavior by a time domain behavior parameter.
  • Forwarding Occasion The time when the same beam is used for signal forwarding. In other words, in downlink transmission, within a forwarding occasion, the beam used by the network device to send signals, the beam used by the relay device to receive signals, and the beam used by the relay device to forward received signals will not change; or, in uplink transmission, within a forwarding occasion, the beam used by the relay device to receive signals, the beam used by the relay device to forward received signals, and the beam used by the network device to receive signals will not change.
  • one forwarding opportunity may be used to transmit one type of signal.
  • a forwarding opportunity may also be referred to as a time interval.
  • a time interval may include one or more time domain symbols.
  • Fig. 1 is a schematic diagram of a system architecture applicable to the method provided in an embodiment of the present application.
  • the system 100 shown in Fig. 1 includes: an access network device 110, a relay device 120 and a terminal device 130.
  • the access network device 110 can provide network coverage for a specific geographical area.
  • the relay device 120 is introduced to assist the communication between the access network device 110 and the terminal device 130.
  • the backhaul side beam of the relay device can receive the control signal from the access network device, and after amplifying the control signal and other processing, send it to the terminal device 130 through the access side beam.
  • the access network device 110 can send a downlink data signal to the terminal device 130 through the relay device 120; the terminal device 130 can also send an uplink data signal to the access network device 110 through the relay device 120.
  • the access network equipment can also be connected to the core network equipment.
  • the core network equipment can include, but is not limited to, access and mobility management function network element (AMF), session management function network element (SMF), user plane function network element (UPF), etc.
  • AMF access and mobility management function network element
  • SMF session management function network element
  • UPF user plane function network element
  • Each network element can be used to implement its own function.
  • AMF can be used for mobility management and access management.
  • SMF can be used for session management, Internet protocol (IP) address allocation and management of terminal equipment, selection and management of user plane functions, policy control, or termination points of charging function interfaces and downlink data notification.
  • UPF can be used for packet routing and forwarding, or quality of service (QoS) processing of user plane data, etc.
  • QoS quality of service
  • the access network equipment 110 and the relay equipment 120 may also be connected to an operation administration and maintenance (OAM) network element.
  • OAM operation administration and maintenance
  • the network management work is usually divided into three categories: operation, administration, and maintenance, referred to as OAM.
  • Operation mainly completes the analysis, prediction, planning, and configuration of daily networks and services; maintenance mainly involves daily operational activities such as testing and fault management of the network and its services.
  • OAM can detect the network operation status, optimize network connection and performance, improve network operation stability, and reduce network maintenance costs.
  • FIG2 is a schematic diagram of the structure of an access network device provided in an embodiment of the present application.
  • the access network device 200 shown in FIG2 includes: a processor 201, a memory 202, and a transceiver 203.
  • the memory 202 can be used to store computer programs or configuration information.
  • the processor 201 can be used to execute the computer program stored in the memory 202, or read the configuration information stored in the memory 202.
  • the transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033.
  • the transmitter 2031 can be used to send a signal through the antenna 2033, and the receiver 2032 can be used to receive a signal through the antenna 2033.
  • FIG3 is a schematic diagram of the structure of a relay device provided in an embodiment of the present application.
  • the relay device 300 shown in FIG3 includes: a controller 301, a signal amplifier 302, one or more of signal transceiver units 303 and 304, etc.
  • the relay device 200 can be used to implement communication and signaling interaction with access network devices and terminal devices, signal amplification, etc.
  • the relay control (such as the controller 301) Also called a mobile terminal (MT or NCR-MT), other parts (such as signal amplifier 302, signal transceiver units 303 and 304) can constitute a forwarding module (forwarding, Fwd or NCR-Fwd) (also known as a wireless radio unit (radio unit, RU), or a distributed unit (distributed unit, DU), or a distributed radio unit (distributed radio unit, DRU), etc.).
  • forwarding, Fwd or NCR-Fwd also known as a wireless radio unit (radio unit, RU), or a distributed unit (distributed unit, DU), or a distributed radio unit (distributed radio unit, DRU), etc.
  • the link between the access network device and the forwarding module of the relay device connected to it is a backhaul link (backhaul link), and the link between the forwarding module of the relay device and the terminal device connected to it is an access link (access link).
  • the forwarding link may include a backhaul link and an access link.
  • the relay device may receive a signal from the access network device through the backhaul link, and forward the received signal 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, a control signal or a data signal, which is not limited in the present application.
  • the relay device may also receive a signal from the terminal device through the access link, and forward the received signal to the access 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 or a data signal, which is not limited in the present application.
  • the relay device may receive a signal from the access network device through the backhaul side antenna, and/or send a signal to the access network device.
  • the relay device may send a signal to the terminal device through the access side antenna, and/or receive a signal from the terminal device.
  • 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 may be used to send a signal through the antenna 3033 or 3043
  • the receiver 3032 or 3042 may be used to receive a signal through the antenna 3033 or 3043.
  • the relay controller and the backhaul link may have the same information such as the beam, for example, the two share a common antenna.
  • the controller (MT) and the forwarding module (Fwd) simultaneously transmit and receive signals (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 access network device indicates the beam information of the backhaul link.
  • the receiving beams of the MT and Fwd backhaul links may have a QCL relationship (for example, QCL typeA and QCL typeD).
  • a signal transceiver unit (such as signal transceiver unit 303) of the relay device is used to receive a signal from the access network device, and another signal transceiver unit (such as signal transceiver unit 304) is used to forward the amplified received signal to the terminal device.
  • the controller 301 can also communicate with the access network device or the terminal device with the help of the signal transceiver unit 303 or 304.
  • the controller 304 communicates with the access network device through the signal transceiver unit 303 to establish a communication link and beam alignment between the relay and the access network device; it can also be used to receive the configuration or indication information of the access network device, so as to facilitate the access network device to control the working time, working state, or working mode of the repeater; or it can be 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 state (such as amplification factor, phase) of the signal amplifier 302 according to the indication information of the access network device or its own measurement information.
  • each unit in Fig. 3 may be one or more.
  • FIG4 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.
  • the terminal device 400 shown in FIG4 includes: a processor 401, a memory 402, and a transceiver 403.
  • the memory 402 can be used to store computer programs or configuration information.
  • the processor 401 can be used to execute the computer program stored in the memory 402, or read the configuration information stored in the memory 402.
  • the transceiver 403 includes a transmitter 4031, a receiver 4032, and an antenna 4033.
  • the transmitter 4031 can be used to send a signal through the antenna 4033, and the receiver 4032 can be used to receive a signal through the antenna 4033.
  • the relay device can assist the access network device and the terminal device in communicating. Since the access network device needs to schedule the relay device, such as scheduling the beam of the relay device to send and receive signals, it is desirable to provide a method for scheduling the relay device.
  • the present application provides a signal forwarding method, which sends beam information and time information to a relay device through an access network device to indicate the backhaul link beam and its effective time and/or the access link beam and its effective time, thereby facilitating the relay device to send and receive signals through the beam scheduled by the access network device at different times, thereby assisting the transmission between the access network device and the terminal device and improving the transmission performance.
  • the backhaul link beam includes the beam on the access network device side and the backhaul side beam of the relay device
  • the access link beam includes the beam on the terminal device side and the access side beam of the relay device.
  • the backhaul side beam of the relay device is referred to as the relay backhaul side beam
  • the access side beam of the relay device is referred to as the relay access side beam.
  • the beam of the access network device can be used to send signals, which can be called a transmitting beam; the beam on the relay backhaul side can be used to receive signals, which can be called a receiving beam; the beam on the relay access side can be used to forward received signals, which can be called a forwarding beam; the beam of the terminal device can be used to receive signals forwarded by the relay device, which is also called a receiving beam.
  • the beam of the terminal device can be used to send signals, which can be called a transmitting beam; the beam on the relay access side can be used to receive signals, which can be called a receiving beam; the beam on the relay backhaul side can be used to forward received signals, which can be called a forwarding beam; the beam of the access network device can be used to receive signals forwarded by the relay device, which can also be called a receiving beam.
  • the transmitting beam, receiving beam and forwarding beam are relative to the sending and receiving of signals.
  • the role of the beam of the same device may be different.
  • the relay backhaul side beam mainly refers to the beam of the access network device, for example, it can be the transmitting beam in the downlink transmission, or it can be the receiving beam in the uplink transmission
  • the access link beam mainly refers to the relay access side beam, for example, it can be the forwarding beam in the downlink transmission, or it can be the receiving beam in the uplink transmission.
  • K max The maximum value of the forwarding opportunity, which is the time interval in which the beam is effective (hereinafter referred to as the time interval). K max can also be understood as the maximum number of time intervals used to transmit signals, and K max is a positive integer. The value of K max can be configured by the access network device through signaling, or can be predefined by the protocol, and this application does not limit this.
  • K the number of forwarding opportunities (or time intervals) determined by time information, that is, the number of time intervals actually used to transmit signals. K is less than or equal to K max , and K is a positive integer.
  • M the number of backhaul link beam indication fields, M is a positive integer.
  • N the number of access link beam indication fields, N is a positive integer.
  • the words “first”, “second” and digital numbers “1", “2", “#1”, “#2” and the like are used to distinguish the same items or similar items with basically the same functions and effects.
  • the first indication information and the second indication information are only for distinguishing different indication information
  • the first mapping relationship and the second mapping relationship are only for distinguishing different mapping relationships.
  • time interval 1 and time interval 2 are for distinguishing different time intervals
  • symbols 0 to 13 are for distinguishing different time domain symbols, and so on.
  • OFDM orthogonal frequency division multiplexing
  • TCI transmission configuration indication
  • DCI downlink control information
  • RRC radio resource control
  • PDCCH physical downlink control channel
  • PUCCH physical uplink control channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • At least one means one or more, and “plurality” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character “/” generally indicates that the previous and next associated objects are in an “or” relationship. "At least one of the following items” or similar expressions refers to any combination of these items, including any combination of single items or plural 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 multiple.
  • the tables in the embodiments of the present application are only examples.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by the present application.
  • the tables do not limit the scope of protection of the present application.
  • appropriate deformation adjustments can be made based on the tables in the above text, such as splitting, merging, etc.
  • the parameter names shown in the titles of the tables can also use other names that can be understood by the communication device, and the values or representations of the parameters can also use other values or representations that can be understood by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, etc. Devices, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.
  • Figure 5 is a schematic flow chart of the signal forwarding method provided in an embodiment of the present application.
  • Figure 5 shows the method from the perspective of device interaction.
  • the relay device in the method can also be replaced by a component in the relay device, such as a chip, a chip system, or other modules that can be used to implement part or all of the functions of the relay device
  • the network device in the method (such as the first network device or the second network device) can also be replaced by a component in the network device, such as a chip, a chip system, or other modules that can be used to implement part or all of the functions of the network device
  • the terminal device in the method can also be replaced by a component in the terminal device, such as a chip, a chip system, or other modules that can be used to implement part or all of the functions of the terminal device.
  • This application is not limited to this.
  • the first network device and the second network device in the following embodiments are defined to distinguish different devices.
  • the first network device is an access network device, such as a gNB, and the first network device can communicate with a relay device and a terminal device.
  • the second network device is a core network device or an OAM, etc., and the second network device can communicate with the first network device and the relay device.
  • the size of the sequence number of each step in FIG. 5 does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.
  • the various steps in the process shown in FIG. 5 are only examples, and do not represent that each step must be executed.
  • Those skilled in the art can make simple changes based on the same concept, such as making adjustments to the execution order of some steps, or adding other steps or reducing the steps therein, to implement the method provided by the present application. These changes should all fall within the scope of protection of the present application.
  • the method 500 shown in Fig. 5 includes steps 510 to 570. Each step in the method 500 is described in detail below.
  • step 510 the first network device generates beam information and time information.
  • the beam information can be used to indicate the backhaul link beam and/or the access link beam.
  • the backhaul link beam includes the transmission beam of the access network device (e.g., the first network device in this embodiment) and/or the reception beam of the relay device (i.e., the relay backhaul side beam), and the access link beam includes the forwarding beam of the relay device (i.e., the relay access side beam) and/or the reception beam of the terminal device.
  • the beam information can be specifically used to indicate the forwarding beam of the relay device (i.e., the relay access side beam), and can also indicate the transmission beam of the access network device, and can further indicate the reception beam of the relay device (i.e., the relay backhaul side beam).
  • the access link beam includes the transmit beam of the terminal device and/or the receive beam of the relay device
  • the backhaul link beam includes the forwarding beam of the relay device and/or the receive beam of the access network device.
  • the beam information can be specifically used to indicate the forwarding beam of the relay device (i.e., the relay backhaul side beam), and can also indicate the receive beam of the access network device, and can further indicate the receive beam of the relay device (i.e., the relay access side beam).
  • the beam information is used to indicate the forwarding beam of the relay device, so that the relay device can use the appropriate beam to forward the signal. Since the first network device can select the forwarding beam corresponding to the receiving device in the direction based on the receiving device of the signal (i.e., the terminal device), indicating the forwarding beam through the beam information is conducive to the relay device to better assist the transmission and improve the transmission performance.
  • the beam information can also be used to indicate the receiving beam of the relay device, so that the relay device can use the appropriate receiving beam to receive the signal. Since the first network device can schedule the transmit beam of the signal, it can select the corresponding receive beam based on the transmit beam of the signal, and then indicate the receive beam through the beam information, which is conducive to improving the reception quality of the signal on the relay device side, thereby better assisting transmission and improving transmission performance.
  • the relay device may use a fixed receiving beam to receive the signal, or determine which receiving beam to use to receive the signal, such as determining the receiving beam based on the transmitting beam. If the beam information indicates the receiving beam of the relay device, the relay device may use the receiving beam indicated by the beam information to receive the signal, thereby facilitating improved reception performance.
  • the beam information can also be used to indicate the transmission beam (corresponding to downlink transmission) or receiving beam (corresponding to uplink transmission) of the first network device.
  • the first network device indicates its own transmission beam (corresponding to downlink transmission) or receiving beam (corresponding to uplink transmission) through the beam information, which is beneficial for the relay device to select a suitable receiving beam to receive the signal (corresponding to downlink transmission), or to select a suitable forwarding beam to forward the signal (corresponding to uplink transmission). Therefore, it is beneficial for the relay device to better assist transmission and improve transmission performance.
  • the relay device may use a fixed receive beam to receive the signal, or determine which receive beam to use to receive the signal. If the beam information does not indicate the receiving beam of the first network device, the relay device can determine by itself which forwarding beam to use to forward the signal.
  • the beam of the first network device and/or the beam of the terminal device may correspond to a TCI state identifier (identifier, ID) (TCI state ID), which is an example of a beam identifier
  • TCI state ID TCI state identifier
  • the beam of a relay device such as a relay backhaul side beam and/or a relay access side beam, may correspond to a beam index, which is another example of a beam identifier.
  • Tables 1 to 3 below respectively show an example of the correspondence between the indication bit and the beam identifier.
  • "000” and “0000” are preset values, which can indicate that the relay function is turned off, that is, the relay device does not receive or forward signals, or the beam of the relay device is deactivated.
  • Table 1 and Table 2 respectively show the correspondence between multiple beams and multiple groups of indication bits.
  • Each group of indication bits includes 3 bits.
  • the 3 bits can be used to indicate up to 7 (obtained from 2 3 -1) different beams.
  • Table 3 shows the correspondence between multiple combinations of two types of beams and multiple groups of indication bits.
  • Each group of indication bits is 4 bits. In addition to the "0000" corresponding to the relay function being turned off, the 4 bits can be used to indicate up to 15 (obtained from 2 4 -1) different combinations.
  • the correspondence between the multiple groups of indication bits and multiple TCI status identifiers shown in Table 1 is recorded as the first mapping relationship
  • the correspondence between the multiple groups of indication bits and multiple beam indexes shown in Table 2 is recorded as the second mapping relationship
  • the correspondence between the multiple groups of indication bits and multiple beam combinations shown in Table 3 is recorded as the fourth mapping relationship.
  • the time information can be used to determine the time domain symbol at which the beam indicated by the beam information takes effect.
  • the beam taking effect means that the beam can be used to receive signals and/or forward signals. Since the beam can be indicated by the beam information, the beam taking effect can also be understood as the beam information taking effect.
  • the time information can be used to determine the time domain symbol at which the backhaul link beam takes effect; when the beam information is used to indicate an access link beam, the time information can be used to determine the time domain symbol at which the access link beam takes effect; when the beam information is used to indicate a backhaul link beam and an access link beam, the time information can be used to determine the time domain symbol at which the backhaul link beam takes effect and the time domain symbol at which the access link beam takes effect.
  • the effective time of the receiving beam and the forwarding beam of the relay device is the same. Therefore, the time domain symbols when the above-mentioned return link beam takes effect and the time domain symbols when the access link beam takes effect overlap in the time domain.
  • the time information can be used to determine the time domain symbols at which the beam is effective, that is, on these time domain symbols, the beam can be used to receive signals and/or forward signals, the effectiveness of the beam can also be understood as the effectiveness of the time information.
  • time domain symbol is: OFDM symbol, or DFT-spread-OFDM symbol.
  • time domain symbol can also be extended to other types of time domain symbols, and the present application includes but is not limited to this.
  • the first network device may pre-configure the first mapping relationship and the second mapping relationship shown in Table 1 and Table 2 above or the third mapping relationship shown in Set Table 3 to the relay device.
  • the first mapping relationship and the second mapping relationship shown in Table 1 and Table 2 above or the third mapping relationship shown in Set Table 3 may also be pre-configured in the relay device and the network device. This application does not limit this.
  • the method further includes: step 520, the first network device sends first configuration information to the relay device, the first configuration information is used to configure the correspondence between the indication bit and the beam identifier.
  • the relay device receives the first configuration information.
  • the first configuration information can be used to configure the above-mentioned first mapping relationship and the second mapping relationship, and can also be used to configure the above-mentioned third mapping relationship.
  • the first mapping relationship may include a correspondence between multiple beams of the first network device and multiple TCI state identifiers. Based on the first mapping relationship, the relay device can determine the corresponding beam based on the received beam information.
  • the second mapping relationship may include a correspondence between multiple beams of the relay device (for example, a relay backhaul side beam and/or a relay access side beam) and multiple beam indexes. Based on the second mapping relationship, the relay device can determine the corresponding beam based on the received beam information.
  • the first configuration information may include: TCI states to be added to the update list (tci-StatesToAddModList) and beam indexes to be added to the update list (beam-IndexsToAddModList).
  • the TCI states to be added to the update list are used to configure multiple beams of the first network device and/or multiple beams of the terminal device, and the beam indexes to be added to the update list are used to configure multiple relay backhaul side beams and/or multiple relay access side beams.
  • the first configuration information sent by the first network device to the relay device may be carried by high-layer signaling, such as an RRC message.
  • mapping relationships shown in Tables 1 to 3 above can be configured based on pre-determined beams. For example, it can be predetermined which beams can be used for the relay device to receive and forward signals, and then the corresponding indication bits are configured for these beams.
  • the beam of the relay device may be pre-configured in the first network device and the relay device by the second network device, so that the first network device can accurately schedule the beam of the relay device.
  • the beam of the relay device may include a beam that the relay device can generate to communicate with the terminal device and/or a beam that the relay device can generate to communicate with the access network device (such as the first network device).
  • the beam of the relay device is referred to as a beam set below.
  • the beam set can be used by the first network device to determine the beam of the schedulable relay device, for example, including a relay backhaul side beam and/or a relay access side beam.
  • the beam of the relay device scheduled by the first network device can be selected from the beam set.
  • the beam set may be configured by the second network device for the first network device and the relay device, for example.
  • the method further includes: step 530, the second network device sends second configuration information to the first network device and the relay device, the second configuration information being used to configure the beam set of the relay device. Accordingly, the first network device and the relay device receive the second configuration information.
  • the second network device is an OAM
  • step 530 specifically includes: the OAM sends second configuration information to the first network device and the relay device, the second configuration information is used to configure the beam set of the relay device. Accordingly, the first network device and the relay device receive the second configuration information from the OAM.
  • the second configuration information may include one or more of the following:
  • the second configuration information includes information on the number of beams or beam sets.
  • the number of beams may refer to the maximum number of beams of the relay device, or the number of candidate beams of the relay device.
  • the number of beam subsets may refer to the maximum number of beam subsets of the relay device, or the number of candidate beam subsets of the relay device.
  • Candidate beams/candidate beam subsets are part of all beams/beam sets of the relay device.
  • the beam set ⁇ A, B, C, ... ⁇ can be determined, where A, B, and C are indexes of each beam subset in the beam set.
  • Subset A includes beams ⁇ a 0 , a 1 , a 2 , ... ⁇
  • subset B includes beams ⁇ b 0 , b 1 , b 2 , ... ⁇
  • subset C includes beams ⁇ c 0 , c 1 , c 2 , ... ⁇
  • a 0 , a 1 , a 2 , b 0 , b 1 , b 2 , c 0 , c 1 , c 2 are indexes of the beams.
  • the second configuration information includes the number of beam subsets, which may refer to the number of subsets in the above beam set ⁇ A, B, C, ... ⁇ .
  • the second configuration information includes the number of beams in the beam set, which may refer to the number of beams in the above beam set ⁇ A, B, C, ... ⁇ , or the number of beams in a certain beam subset, such as the number of beams in subset A, B or C.
  • a beam set (also referred to as a beam set) includes at least one beam.
  • the number of beam sets, beam subsets, or beams can be any value in ⁇ 1, 2, 4, 6, 8, 10, 16, 24, 32 ⁇ . It is assumed that the number of beam sets, beam subsets, or beams is not greater than L, where L can be any value in ⁇ 1, 2, 4, 6, 8, 10, 16, 24, 32 ⁇ .
  • the beam set determined according to the second configuration information may include one or more beam subsets.
  • the beam set determined according to the second configuration information in the previous example includes ⁇ A, B, C, ... ⁇ , which includes multiple beam subsets such as beam subset A, beam subset B, beam subset C, etc.
  • the relay device can generate more beams to communicate with the terminal device and/or the relay device can generate more beams to communicate with the access network device (such as the first network device), and more indication bits are required to indicate.
  • the relay device can generate 1024 beams to communicate with the terminal device. If binary values are used to indicate different beams, each beam may require 10 bits to indicate.
  • the first network device configures the correspondence between the indication bit and the beam identifier for the relay device through the second configuration information, and when indicating the scheduled beam through the beam information, it may incur a large indication overhead.
  • the second network device can divide the beam set of the relay device into multiple subsets, each subset including multiple beams.
  • the second network device can indicate one of the subsets through the second configuration information, the first network device schedules the relay device based on the beams in the subset, and the relay device determines the beam scheduled by the first network device based on the subset.
  • the 1024 beams in the previous example are divided into 64 subsets, each subset includes 16 beams, if different subsets are indicated by binary values, each subset can be indicated by 6 bits, if different beams are indicated by binary values, each beam can be indicated by 4 bits, for example, the 16 beams in each subset can be one-to-one corresponded by beam indexes 0 to 15.
  • the second network device can indicate the subset to the relay device through 6 bits, and can indicate the beam indexes corresponding to the beams in the subset to the first network device through 4 bits.
  • the first network device can be scheduled based on the configured 16 beams, and the relay device can also determine the beams scheduled by the first network device based on the 16 beams.
  • the indication overhead is small when the first network device configures the correspondence between the indication bit and the beam identifier for the relay device through the first configuration information, and when the first network device indicates the scheduled beam through the beam information.
  • the second network device configures part of the beams of the relay device (i.e., a subset of the beam set) to the relay device and/or the first network device.
  • the first network device is based on the subset
  • the relay device is scheduled/controlled based on the beams in the subset, and the relay device forwards based on the beams in the subset.
  • the second network device sets the beam index set
  • the corresponding beam information is configured to the first network device and the second network device.
  • the network device and/or the relay device use the logical beam indication information to indicate the relay forwarding beam.
  • the logical beam indication information (specifically, it can be a logical beam index) corresponds to the beam in the beam index set B (or corresponds to the actual beam index one by one).
  • the signaling overhead is minimized when the first network device controls the relay device. For example, only bits. Among them, the first network device and the relay device correspond to the same actual beam index (or relay beam) based on the logical beam indication information.
  • the second network device configures the actual beam index (or relay beam) in set B to the first network device and the relay device respectively, and the order of configuring the beams in set B is the same.
  • the first network device determines the logical beam index based on the actual beam index and the order of the actual beam index in set B.
  • the relay device can determine the same actual beam index (and actual beam) based on the logical beam index.
  • the second network device sets the beam index set The corresponding beam information is configured to the first network device and the second network device. Furthermore, the second network device also indicates the logical beam index corresponding to each beam in the logical beam index set to the first network device and/or the relay device. In subsequent control signaling, the first network device and the second network device determine the actual beam index (and the actual beam) based on the logical beam index.
  • the second configuration information includes QCL information of the beam/beam set.
  • the QCL relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics.
  • the same or similar communication configuration can be used.
  • the signals corresponding to the antenna ports with a QCL relationship have the same parameters, or the parameters of an antenna port (also referred to as QCL parameters) can be used to determine the parameters of another antenna port with a QCL relationship with the antenna port, or the two antenna 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 Rx parameters, and spatial Tx parameters.
  • the spatial receiving parameters or the spatial transmitting parameters may include one or more of the following: angle of arrival (angle of arrival, AOA), average AOA, AOA extension, angle of departure (angle of departure, AOD), average AOD, AOD extension, receiving antenna spatial correlation parameters, transmitting antenna spatial correlation parameters, transmitting beam, receiving beam and resource identifier.
  • beam is an abstract concept. It can correspond to instantaneous or statistical channel characteristics when transmitting signals, such as delay spread, Doppler spread, Doppler shift, average delay, average gain, spatial receive parameters, and spatial transmit parameters (spatial Tx parameters).
  • the beam can be indicated/characterized by a reference signal, that is, the QCL relationship between the reference signals can reflect different or the same beams; in addition, the beam can also be represented by the weight acting on the antenna or the codebook acting on the antenna port in a multi-antenna system, that is, the beam can also correspond to a codebook.
  • the QCL information of the beam subset is shown in Table 4:
  • TCI state identifier (StateId)-A is used to indicate the TCI information of beam subset A, and so on, which are not explained one by one here.
  • TCI can be used to configure the QCL relationship between the downlink reference signal and the physical downlink shared channel (physical downlink shared channel, PDSCH) and the demodulation reference signal (de-modulation reference signal, DMRS).
  • the TCI here refers to the TCI corresponding to the beam of the relay device, which can be used to indicate the QCL relationship between the downlink reference signal forwarded by the relay device and PDSCH, DMRS.
  • TCI can also be other names, which is not limited in this application.
  • the QCL information of the beams in the beam set is shown in Table 5:
  • the TCI state flag -a 0 is used to indicate the TCI information of beam a 0. And so on, which will not be explained here one by one.
  • the second configuration information includes coverage information of the beam/beam set.
  • the coverage information of the beam subset is shown in Table 6:
  • the coverage information of the beams in the beam set is shown in Table 7:
  • the coverage range is the spatial coverage information of the corresponding beam subset or beam.
  • the coverage range of the beam subset may be the union of the coverage ranges of all beamformations in the beam subset, or may be the union of the coverage ranges of some beamformations in the beam subset, or may be the union of the coverage ranges of beamformations in the beam subset whose beam gains exceed a certain value.
  • Spatial coverage information may refer to a coverage area
  • a coverage area may refer to a logical area division.
  • the coverage area corresponds to a square, the square defines the length and width, the coverage area corresponds to the logical number of the square, or the coverage area corresponds to at least one of the long side starting position, the wide side starting position, the length of the long side, the length of the wide side, the long side end position, and the wide side end position.
  • the coverage area corresponds to a cube, the square defines the length, width, and height, the coverage area corresponds to the logical number of the cube, or the coverage area corresponds to at least one of the long side starting position, the wide side starting position, the high starting position, the long side length, the wide side length, the height, the long side end position, the wide side end position, and the high end position.
  • the coverage area corresponds to a polar coordinate area, the polar coordinate area defines the radius and angle, the coverage area corresponds to the logical number of the radius, or the coverage area corresponds to at least one of the radius starting position, the radius end position, the angle starting position, and the angle end position.
  • the spatial coverage information refers to the coverage angle range (or coverage direction, or coverage direction range). Specifically, it may include a horizontal angle and/or a vertical angle. That is, the coverage angle range information may include at least one of the following: a horizontal angle width, a horizontal angle start value, a horizontal angle end value, a vertical angle width, a vertical angle start value, or a vertical angle end value.
  • Figure 6 (a) is a schematic diagram of a square coverage area, that is, the coverage area of a beam or a beam subset is two-dimensional, and a square in the figure represents the coverage range of a beam subset or a beam.
  • Figure 6 (a) only illustrates the coverage range of adjacent beams (such as beams A0, B0, A1 and B1 shown in the figure). It should be understood that the coverage ranges between beam subsets or beams may overlap.
  • the coverage range of the relay device beam can be approximately corresponding to the area defined by the horizontal direction (horizontal) and the vertical direction (vertical) in the array antenna forming.
  • the x-axis corresponds to the horizontal direction
  • the y-axis corresponds to the vertical direction
  • the coverage range of a beam or a beam subset can be defined as the width of a 3 decibel (decibel, dB) angle (the angle width can also be other values, such as 5dB, 6dB), that is, the angle area between the directions that differ by 3dB from the strongest beam gain.
  • FIG6 shows the corresponding coverage area in the polar coordinate region, where the coverage area of a certain beam or beam subset is the region abcd, and the radius starting position is The radius ends at The starting angle is ⁇ 1 and the ending angle is
  • the beam subsets or coverage ranges corresponding to the beams of the relay device may be adjacent, as shown in Figure 7.
  • the second configuration information sent by the relay device may include the starting coverage range of beam subset A, and the coverage width information of beam subsets A, B, C, etc., and the adjacent/relative order of each beam subset. That is, the first network device can determine the coverage of each beam subset based on the above information.
  • the second configuration information sent by the relay device may include the starting coverage of beam a 0 , and the coverage width information of each beam (the beam shown in b in FIG. 7 ), and the adjacent/relative order of each beam, that is, the first network device can determine the coverage of each beam based on the above information.
  • the relative order between beam subsets or beams can be predefined. If the relative order between beam subsets or beams is predefined, the coverage of the 0th beam subset or the 0th beam, and the coverage width of each beam set or each beam can determine the coverage of each beam subset or each beam.
  • Beam subsets (or beams) can be associated (or corresponded) with signals, as shown in FIG8 (FIG8 takes beam subsets as an example).
  • the relative order between beam subsets can be determined according to the sequence of signals in the time domain or frequency domain, or the index (or number) of the corresponding beam subset can be determined according to the position of the signal in the time domain or frequency domain.
  • the period T in FIG8 can be understood as the transmission period of signal 0 (or other signals, such as signal 1 and signal 2), or the use period of beam subset A (or other beam subsets, such as beam subset B and beam subset C), and this application does not limit this.
  • the second network device can indicate the starting coverage range of the 0th beam subset and the coverage width of each beam subset in the second configuration information, and the first network device can determine the coverage range of each beam subset.
  • the angle coverage range of the 0th beam subset i.e., beam subset A
  • the angle coverage range of beam subset B is (S+W, S+2W]
  • the angle coverage range of beam subset C is (S+2W, S+3W]
  • the angle coverage range of the i-th beam subset is (S+i ⁇ W, S+(i+1) ⁇ W].
  • the second network device may indicate the starting coverage of the 0th beam and the coverage width of each beam in the second configuration information, and the first network device may determine the coverage of each beam. That is, the coverage of each beam in b) of FIG. 7 may also be determined by the above-mentioned method of determining the coverage of each beam subset.
  • the second configuration information includes a relative relationship between beam subsets or a relative relationship between beams.
  • the relative relationship may refer to the relationship between coverages, and the relative relationship includes intersection relationship, inclusion relationship, subordination relationship, and QCL relationship.
  • the intersection relationship, inclusion relationship, and subordination relationship may be considered as special cases of the QCL relationship.
  • the intersection relationship means that there is an intersection between the beam coverage ranges, that is, the beam subsets of the relay device or the coverage ranges corresponding to the beams can overlap with each other.
  • beam subsets A and C are adjacent and have no intersection relationship.
  • Beam subsets B and A, as well as beam subsets B and C have an intersection relationship, that is, the coverage ranges of beam subsets B and A, and beam subsets B and C overlap.
  • beams ai and ai+1 are adjacent
  • beams bi and bi +1 are adjacent
  • beams ci and ci +1 are adjacent
  • beams d i and d i+1 are adjacent, where i is greater than or equal to 0.
  • O represents the offset between beam subsets or beam coverage ranges.
  • O can be a beam subset or half of the coverage range of the beam, and this application does not impose any limitation on this.
  • the first network device may determine the coverage information of another beam subset that has a relative relationship with the beam subset based on the above information. Or if the second network device indicates the relative relationship between the beams and the coverage information of one of the beams in the second configuration information, the first network device may determine the coverage information of another beam that has a relative relationship with the beam based on the above information.
  • the second network device indicates in the second configuration information that the angular coverage range of beam subset A is (S, S+W], the angular coverage range of beam subset C is (S+W, S+2W], beam subsets A and C are adjacent, beam subset B intersects with beam subsets A and C, and the offset value is O, then the first network device can determine that the coverage range of beam subset B is (S+O, S+W+O].
  • the inclusion relationship or affiliation relationship means that the coverage of one beam subset (or beam) is included in the coverage of another beam subset (or beam). For example, as shown in a) of FIG10 , the coverage of beams a 0 , a 1 , and a 2 is included in the coverage of beam subset A, and the coverage of beams b 0 , b 1 , and b 2 is included in the coverage of beam subset B.
  • the coverage of beam A0 is the same as the coverage of beams a 0 , a 1 , a 2 , and a 3 , so relatively speaking, beam A0 can be called a wide beam, and beam a 0 can be called a narrow beam, where wide beam and narrow beam refer to the size of the coverage area of the beam.
  • the second network device sends the relationship between the beam subsets, or the relationship information between the beams, to the first network device, thereby assisting the first network device in scheduling and indicating the beam of the relay device.
  • the first network device can schedule the beam scanning and data transmission of the relay device through the relative relationship between the beam subsets (or beams).
  • the second configuration information includes the relative relationship between the beams (or beam subsets)
  • the overhead of reporting the second configuration information can be saved.
  • the beams of the relay device may not be managed by beam subsets, that is, they are all in the form of beams, and the beams of the relay device are uniformly managed, that is, uniformly indexed. If the relay device has a total of 5 beams, the indexes of the beams may be a 0 , a 1 , a 2 , a 3 , and a 4 . If the beams of the relay device are managed by beam subsets, as shown in FIG. 11 , the coverage ranges of different beams are different.
  • the coverage range of beam subset A (including beams a0 , a1 , a2 ) is basically the same as the coverage range of beam subset B (including beams b0 , b1 , b2, b3, b4, b4, b5), and the coverage range of beam subset C (including beams c0, c1, c2 , c3 , c4 , c5 , c6 , c7 , c8 , c9 , c10 , c11 ), that is, 3 beams, 6 beams, and 12 beams have the same coverage range. Therefore, it can be understood that the more beams there are in the same coverage range, the narrower the coverage range of the corresponding beam is, and the higher the beam gain may be.
  • the second configuration information includes antenna array information of the relay device and/or weight generation information.
  • the antenna array information includes one or more parameters: the number of arrays Ne , the array spacing d, the number of phase shifters Np , the number of digital channels, the number of analog channels, and the number of ports.
  • Each parameter may be two-dimensional, for example, distinguishing between the horizontal direction (horizontal, H) and the vertical direction (vertical, V), ( Ne,H , Ne ,V ) represents the number of arrays Ne ,H in the horizontal direction and the number of arrays Ne ,V in the vertical direction, ( dH , dV ) represents the horizontal array spacing dH and the vertical array spacing dV , and ( Np,H , Np ,V ) represents the number of phase shifters Np ,H in the horizontal direction and the number of phase shifters Np ,V in the vertical direction.
  • the weight generation information may be a weight um corresponding to the antenna array, and um may be a vector based on DFT, where m represents a beam index.
  • the weight um is represented as a column vector of Ne ⁇ 1, where is the imaginary unit, e is the natural logarithm base, m is an arbitrary integer, and T is the matrix or vector transpose sign.
  • the weight um is represented as a column vector of Ne ⁇ 1.
  • a can correspond to the upsampling (or oversampling) parameter
  • b is the offset value.
  • the beam (or weight) corresponding to um is a twice upsampled DFT beam
  • the beam (or weight) corresponding to um is a four-fold upsampled DFT beam.
  • Ne 2Np , that is, one phase shifter drives two elements in the antenna array. That is, the weight um is represented as a column vector of 2Np ⁇ 1, where m is an arbitrary integer or real number.
  • the above example takes a phase shifter driving two arrays, and the two arrays are placed adjacent to each other. In practice, it can be any other number and any layout method, and can be expanded in a similar way. The corresponding weights are obtained in the following example.
  • Ne 2Np , that is, one phase shifter drives two elements in the antenna array. That is, the weight um is expressed as a 2Np ⁇ 1 column vector, where m is an arbitrary integer or real number.
  • Ne 3Np , that is, one phase shifter drives three phases in the antenna array. That is, the weight um is expressed as a 2Np ⁇ 1 column vector, where m is an arbitrary integer or real number.
  • the weight generation information may be a weight um corresponding to the antenna array, and um may be a vector based on DFT expansion.
  • um can be expanded based on DFT square rate, or any other form of expansion, which is not limited in this application. Taking square rate expansion as an example,
  • the above-mentioned weight generation information can also be understood as a weight generation method (the calculation formula of um ), such as the transmission weight or reception weight of the beam.
  • the transmission weight is also called the transmission filter, and the reception weight is also called the reception filter.
  • Different weight generation information can generate different beams or beam subsets.
  • a beam or beam subset with a relatively narrow and dense coverage direction can be generated.
  • a beam or beam subset with a relatively narrow coverage direction and moderate interval can be generated; by adopting the DFT square rate expansion weight, a beam with a relatively wide coverage direction can be generated.
  • the above-mentioned calculation formula of um is a weight generation method based on oversampled DFT, and the calculation formula of um can also be a weight generation method based on the Hadamard matrix, or a weight generation method based on different cyclic shifts of basis vectors, or a weight generation method based on Golay complementary sequence (or matrix), or based on other weight generation methods, and this application does not impose any restrictions on this.
  • the relay device side can adopt multiple weight generation methods at the same time to generate different beams (with different coverage ranges and/or
  • the first network device can determine the beam or beam subset of the relay device, the beam index or beam subset index, the coverage information of the beam or beam subset, the number information of the beam or beam subset, etc.
  • the weight generation information and the antenna array information are determined, the corresponding weight um and the coverage of the beam are directly associated with m, that is, the beam with index m corresponds to the weight um .
  • the second configuration information includes at least one of a correspondence between a beam index and a weight, a correspondence between a beam index and a beam, and a correspondence between a beam subset index and a beam.
  • the first network device may determine the index of the beam generated by the relay device using different weights according to the correspondence between the beam index and the weight, and may directly indicate the index of the beam when subsequently configuring the beam for measurement (or data transmission).
  • the first network device may directly indicate the index of the beam when subsequently configuring the beam for measurement (or data transmission) according to the correspondence between the beam index and the beam.
  • the first network device may save the correspondence between the beam index and the weight, the correspondence between the beam index and the beam, and the correspondence between the beam subset index and the beam, to facilitate subsequent configuration or indication of the beam.
  • the above different implementations respectively introduce the way in which the first network device and the relay device can determine the beam of the relay device when the second configuration information includes any one of the number information of beams or beam subsets, quasi-co-location information of beams or beam subsets, coverage information of beams or beam subsets, relative relationship between beams or beam subsets, antenna array information and weight generation information.
  • the second configuration information may also include any two or more of the above items.
  • the way in which the first network device determines the beam of the relay device can be combined with the above different implementations, which will not be repeated here.
  • the second network device may send all beam information that may be generated/implemented by the relay device to the first network device, thereby providing information for the first network device to configure a scanning beam for the relay device.
  • the resources used by the relay device to forward the signal can also be pre-configured.
  • the first network device configures forwarding resources for the relay device, and the relay device forwards the received signal based on the configured forwarding resources.
  • the method also includes: step 540, the first network device sends resource configuration information to the relay device, and the resource configuration information is used to configure the forwarding resources.
  • the relay device receives the resource configuration information from the first network device.
  • the first network device can configure one or more forwarding resource sets (forwarding resource sets) through high-level signaling (such as RRC messages), and each forwarding resource set can include one or more forwarding resources (forwarding resource).
  • forwarding resource sets can be identified by different forwarding resource set indexes (forwarding resource set index), and different forwarding resources can also be identified by different forwarding resource indexes (forwarding resource index).
  • each forwarding resource includes: resource index (resource index), beam index (beam index), resource symbol position (resource symbol position), forwarding gain (forwarding gain) and other information.
  • TRS information can be used to indicate whether the resources are sent by the same antenna port, where TRS is only an example and can also be replaced by a phase tracking reference signal (PTRS), etc.
  • PTRS phase tracking reference signal
  • FIG. 12A shows a schematic diagram of a forwarding resource set and forwarding resources.
  • Fig. 12A shows a forwarding resource set with an index of 0, which includes time domain behavior and three forwarding resources, and the three forwarding resources specifically include forwarding resources with indexes of 0, 1, and 2.
  • Each forwarding resource further includes a forwarding resource index, a beam index, and a time slot/OFDM symbol position.
  • the forwarding resource set also includes time domain behavior and three forwarding resources, and the three forwarding resources specifically include forwarding resources with indexes of 0, 1, and 2.
  • the three forwarding resources can be obtained by encapsulating the configured reference signal (RS) resource.
  • the forwarding resources with indexes of 0, 1, and 2 in the figure can be associated with the time index of a synchronization signal block (SSB), or with the ID of a channel state information (CSI)-reference signal (RS), or with the ID of a sounding reference signal (SRS).
  • SSB synchronization signal block
  • CSI channel state information
  • SRS sounding reference signal
  • Each forwarding resource can be encapsulated into a forwarding resource by adding a beam index on the basis of the reference signal resource to which it is associated.
  • the forwarding resource set shown in FIG12A is only an example and should not constitute any limitation to the present application.
  • the present application does not limit the number of forwarding resources contained in each forwarding resource set, nor does it limit whether the forwarding resources in each forwarding resource set are newly configured resources or configured reference signal resources.
  • a) and b) in FIG12A may also be combined, such as configuring one or more forwarding resources as shown in a) and/or one or more forwarding resources as shown in b) in a forwarding resource set. The present application does not limit this.
  • the forwarding resources configured by the resource configuration information may be periodic, non-periodic or semi-continuous forwarding resources.
  • the relay device can activate the forwarding resource after receiving the above resource configuration information, and use the forwarding resource to periodically forward the signal.
  • the relay device can periodically forward the signal according to the indication of the time domain position, the beam, the amplification gain, etc. in the resource configuration information.
  • the first network device can trigger the relay device to use the forwarding resource to forward the signal by activating signaling (such as medium access control (MAC)-control element (CE) or DCI, etc.).
  • signaling such as medium access control (MAC)-control element (CE) or DCI, etc.
  • the forwarding resource may be, for example, a non-periodic forwarding resource
  • the first network device may trigger the relay device to use the forwarding resource to forward the signal through the above beam information and time information.
  • the resource configuration information may be sent to the relay device before executing step 510. Since the first network device can indicate the time domain symbol when the beam is effective through the beam information and time information, the relay device can determine the position of the forwarding resource in the time domain based on the beam information and time information.
  • the resource configuration information is used to configure: a forwarding resource set and a forwarding resource, which can be used to determine beam information and time information.
  • the resource configuration information includes configuration information of the forwarding resource set and configuration information of the forwarding resource.
  • the forwarding resource set corresponds to at least one of the following information: uplink forwarding, downlink forwarding, forwarding resource set index, at least one forwarding resource, forwarding resource type, amplification gain, backhaul link beam index, frequency information, frequency band information, carrier information, passband information.
  • the forwarding resource corresponds to at least one of the following information: forwarding resource index, access link beam index, backhaul link beam index, amplification gain, uplink forwarding, downlink forwarding, signal index, resource index, turn off forwarding, turn on forwarding.
  • the base station configures a forwarding resource set and at least one forwarding resource in the forwarding resource set. Then, based on the forwarding resource set index or the forwarding resource index, the relay device is instructed to determine at least one forwarding opportunity and the beam corresponding to the forwarding opportunity (that is, the beam that takes effect at the forwarding opportunity).
  • the controller of the relay device receives the resource configuration information sent by the base station, and determines at least one forwarding opportunity and the beam corresponding to the forwarding opportunity according to the resource configuration information and the forwarding resource set index and/or the forwarding resource index, so as to forward. In this way, the control of the relay device can be achieved with relatively less resource overhead, thereby improving efficiency.
  • the configuration information of the forwarding resource set may include the following fields: forwarding resource set index 0, time domain behavior, and configuration information of three forwarding resources; the configuration information of each forwarding resource includes the following fields: forwarding resource index, beam index, time slot or OFDM symbol position.
  • the time domain behavior also corresponds to the forwarding resource type (or forwarding resource set type), the time period of the resource set, the time slot position (or the time slot position within the time period), and whether to repeat forwarding.
  • the forwarding resource type (or forwarding resource set type) may include at least one of the following: periodic, semi-persistent, and aperiodic.
  • the following shows a possible form of the configuration information of the forwarding resource set in the protocol.
  • each field is optional.
  • the configuration information of the forwarding resource further includes the resource information of the signal.
  • the resource information of the signal may be a resource for relay controller communication (or resource configuration information for relay controller communication), or the relay controller may determine the resource for relay controller communication (or resource configuration information for relay controller communication), or the first network device instructs the relay controller to determine the resource for relay controller communication (or resource configuration information for relay controller communication).
  • the resource information may include an index corresponding to a channel or a signal, such as: an SSB time index, a CSI-RS time index, a physical random access channel (PRACH) time index, a PRACH opportunity index, an SRS time index, etc.
  • the relay device may determine the time when the relay device forwards according to the index of the resource. Specifically, the time when the relay device forwards the resource is the time of the resource. Furthermore, the relay device may also determine the passband (or frequency information) when the relay device forwards according to the frequency information of the resource.
  • the following shows a possible form of the configuration information of the forwarding resource in the protocol.
  • each field is optional.
  • the configuration information of the forwarding resource can be put into the configuration information of the forwarding resource set.
  • the information can be understood as the common information of all the forwarding resources in the forwarding resource set.
  • the configuration information of the forwarding resource set can be placed in the configuration information of the forwarding resource.
  • the information can be understood as the configuration information specific to the forwarding resource.
  • the first network device sends beam information and time information to the relay device.
  • the relay device receives the beam information and time information from the first network device.
  • the beam information and the time information may be carried in the same signaling and sent.
  • the first network device may, for example, send the beam information and the time information to the relay device through control signaling.
  • the control signaling may, for example, be physical layer signaling.
  • the relay device may receive the beam information and the time information through a controller (such as the controller shown in FIG. 1 or the controller 301 shown in FIG. 3 ).
  • a possible implementation manner of the first network device sending the beam information and the time information to the relay device is that the first network device Send DCI to the relay device, the DCI carries beam information and time information.
  • beam validation can be understood as beam information validation or time information validation. If the beam information and time information are carried in the DCI, beam validation can also be understood as the DCI validation.
  • step 560 the relay device forwards the received signal based on the beam information and time information.
  • the relay device can determine the backhaul link beam and/or the access link beam based on the received beam information, and can determine the time domain symbols at which the backhaul link beam and/or the access link beam determined based on the beam information are effective based on the received time information, and can then use corresponding beam reception signals and forwarding signals on the time domain symbols corresponding to each beam.
  • the relay device can receive a signal from the first network device based on the backhaul link beam, and forward the received signal based on the access link beam.
  • the signal from the first network device includes, for example, a control signal (such as PDCCH, PUCCH, etc.) and a data signal (such as PDSCH, etc.).
  • the relay device in uplink transmission, can receive a signal from the terminal device based on the access link beam, and forward the received signal based on M backhaul link beams.
  • the signal from the terminal device includes, for example, a data signal (such as PUSCH, etc.).
  • the relay device can serve one or more terminal devices, so when the relay device is used to forward a signal, it can be used to forward a signal to one or more terminal devices.
  • the relay device can also be used to receive a signal from one or more terminal devices. This application does not limit this.
  • the time information can be specifically used to determine the time domain symbol at which the beam takes effect in a time slot. Therefore, the time information can also be understood as the position of the time domain symbol at which the beam takes effect in a time slot.
  • the relay device can determine from which time slot the beam takes effect, that is, it can determine the time slot in which the beam takes effect.
  • the time domain position in which the beam takes effect can be determined by combining the time slot in which the beam takes effect and the time domain symbol in which the beam takes effect.
  • the time slot when the beam takes effect can be determined according to a predefined rule, for example, the interval between the time slot when the beam information and time information are received and the time slot when the beam takes effect is defined as j time slots, or the interval between a certain time domain symbol and the time domain symbol when the beam takes effect is defined as j time domain symbols, where j can be a predefined value or can be configured by the first network device through signaling. This application is not limited to this.
  • the method further includes: step 570, the first network device sends third indication information to the relay device, the third indication information is used to indicate the time slot when the beam indicated by the above beam information starts to take effect. Accordingly, the relay device receives the third indication information from the first network device.
  • the third indication information may be used to indicate the value of j, for example.
  • the first network device may indicate through an indication bit corresponding to the value of j.
  • Table 8 below shows the correspondence between different indication bits and different values.
  • j 0 , j 1 , j 2 , and j 3 are integers.
  • the time slot in which the beam starts to take effect can be determined based on the time slot in which the above beam information and time information are received and j.
  • Figure 13 shows an example of determining the time slot when the beam starts to take effect.
  • the relay device receives DCI in time slot 0, and the DCI carries beam information and time information.
  • the first network device indicates that the value of j is 3 through the third indication information, and it can be obtained that the time slot when the beam starts to take effect indicated by the beam information is time slot 3 (obtained by 0+3).
  • the value of parameter j may be related to the capability (or type) of the relay device.
  • the relay device can report the capability (or type) of the relay device to the first network device through capability information (or type information).
  • the first network device determines the time when the control signaling (such as DCI carrying the above-mentioned beam information and time information) sent to the relay device takes effect based on the capability of the relay device, so as to perform scheduling.
  • different j values are configured for relay devices of different capabilities (or types), which can prevent the scheduling of the first network device from being mismatched with the time of the relay device, causing the relay device to be unable to well assist the signal transmission between the first network device and the terminal.
  • the value of parameter j is related to the service, which is specifically the service when the relay device assists the communication between the first network device and the terminal device.
  • the service which is specifically the service when the relay device assists the communication between the first network device and the terminal device.
  • j can use a smaller value; for delay-insensitive services, j can use a larger value.
  • the value of k ref may correspond to the capability of the relay device.
  • j may correspond to the minimum value of multiple possible values of k ref .
  • k ref may be reported by the relay device to the first network device, or may be a preset value, or may be determined by the first network device based on the capability information of the relay device (or the type information of the relay device).
  • k ref is the minimum value required for the relay device to receive control signaling (such as DCI) and execute instructions in the control signaling (such as DCI), that is, the effective time j ⁇ k ref .
  • Table 9 shows the correspondence between the type of relay device and the value of k ref .
  • NCR-0, NCR-1, ... represent different types of relay devices.
  • k 0 , k 1 , ... are integers.
  • Table 10 shows the correspondence between the type of relay equipment, subcarrier spacing (SCS) and the value of k ref .
  • NCR-0, NCR-1, ... represent different types of relay devices.
  • k 0 , k 1 , k 2 , k 3 , k 4 , k 5 , ... are integers
  • l 0 , l 1 , l 2 , l 3 , l 4 , l 5 , ... are integers.
  • the value of k ref or the value of k offset is related to the SCS.
  • Table 11 shows the corresponding relationship between the index ⁇ of the SCS and the value of k offset .
  • k offset0 , k offset1 , k offset2 , k offset3 , k offset4 , k offset5 , ... are integers.
  • the value of k ref or the value of k offset is related to the frequency range (FR) of the carrier.
  • FR frequency range
  • FR1, FR2-1, FR2-2, ... are different FRs.
  • k offset0 , k offset1 , k offset2 , ... are integers.
  • the SCS in the high frequency band is usually larger, and the length of the corresponding time slot is shorter.
  • the value of k ref or the value of k offset can be larger to match the processing capability of the relay device.
  • the time for the above beam to be effective may not be limited to one time slot, but may also be multiple time slots.
  • the time length for the beam to be effective may be one time slot or multiple time slots.
  • the time length for the beam to be effective may also be referred to as the duration of the beam to be effective.
  • FIG13 shows an example of a duration of 1 time slot, that is, the beam indicated by the beam information takes effect in time slot 3.
  • the time domain symbol at which the beam takes effect in time slot 3 can be determined in conjunction with the aforementioned time information.
  • FIG. 13 shows an example of a duration of 2 time slots, that is, the beam indicated by the beam information is effective in time slot 3 and time slot 4.
  • the time domain symbols for which the beam is effective in time slot 3 and time slot 4 can be determined in combination with the aforementioned time information.
  • the relative position of the time domain symbols for which the beam is effective in time slot 3 is the same as the relative position in time slot 4.
  • the time domain symbols for which the beam is effective in time slot 3 include symbols 0 to 3, and symbols 5 to 13; the time domain symbols for which the beam is effective in time slot 4 also include symbols 0 to 3, and symbols 5 to 13.
  • the duration of the beam taking effect can also be understood as the duration for which the time domain symbol of the beam taking effect determined by the above time information is valid. In other words, it can be understood as the effective duration of the time information.
  • the duration of the beam being effective may be a predefined value, such as a predefined value in a protocol, for example, defining the duration of the beam being effective as 1 time slot.
  • the duration of the beam being effective may also be configured by the first network device.
  • the third indication information is also used to indicate the duration of the effectiveness of the beam indicated by the beam information.
  • the third indication information is used to indicate that the duration of the effectiveness of the beam indicated by the beam information is 2 time slots, which means that the beam indicated by the beam information can be used to receive or forward signals in the 2 time slots after the time slot when the beam starts to take effect.
  • the time when the beam starts to take effect is not limited to the time slot when the beam starts to take effect, and the time slot and time domain symbol when the beam starts to take effect can also be determined at the same time. If the interval between a certain time domain symbol and the time domain symbol when the beam starts to take effect is defined as j time domain symbols, the time slot N slot when the beam starts to take effect and the time domain symbol N symbol when the beam starts to take effect in the time slot can be determined based on the time slot and j in which the above beam information and time information are received.
  • N slot is the number of the time slot that starts to take effect
  • N symbol is the position (that is, the number) of the time domain symbol that starts to take effect in the time slot that starts to take effect.
  • the "certain time domain symbol" used to calculate the time domain symbol at which the beam begins to take effect can be determined according to a preset rule, for example, it can be the time domain symbol at which the relay device begins to receive the beam information and time information, or the first time domain symbol after the relay device completes receiving the beam information and time information, or the first time domain symbol after the relay device receives the time slot of the beam information and time information, etc.
  • the present application includes but is not limited to this.
  • the time slot N slot at which the beam starts to take effect and the time domain symbol N symbol at which the beam starts to take effect in the time slot can be determined according to a preset rule. For example, a relationship between j and N slot and N symbol can be defined to determine N slot and N symbol .
  • the above beam information and time information take effect when The slot N slot and the time domain symbol N symbol respectively satisfy: in, Indicates rounding up. Indicates rounding down.
  • FIG14 shows an example of determining the time slot and time domain symbol at which the beam starts to take effect.
  • the relay device receives DCI in time slot 0, which carries beam information and time information.
  • the first network device indicates that the value of j is 30 through the third indication information, which can be calculated according to the above formula: Therefore, the time slot at which the beam starts to take effect is time slot 3, and the time domain symbol at which the beam starts to take effect is symbol 2 in time slot 3, as shown in the figure.
  • the time when the beam is effective may not be limited to one time slot, but may also be multiple time slots.
  • a) in FIG. 14 shows an example in which the duration of the beam being effective is one time slot, that is, the beam is effective in time slot 3.
  • b) in FIG. 14 shows an example in which the duration of the beam being effective is three time slots, that is, the beam is effective from time slot 3 to time slot 5.
  • the relay device After determining the position in the time domain when the beam takes effect, the relay device can receive and forward signals on the time domain symbol when the beam takes effect based on the beam information.
  • the first network device when the first network device indicates a beam through beam information, it can indicate it through different beam identifiers.
  • the correspondence between the beam and the beam identifier can be pre-defined, for example, the first network device and the relay device both save the correspondence between the beam and the beam identifier in advance; the correspondence between the beam and the beam identifier can also be pre-configured through high-level signaling, so that when the relay device receives the beam information, it can accurately parse the beam indicated by the beam information.
  • the relay device can determine the beam required for forwarding the signal according to the beam information, and then use the determined beam to receive and forward the signal on the effective time domain symbol. In this way, the scheduling of the relay device by the first network device is realized.
  • the first network device can use the above-mentioned method to flexibly indicate the beam and the time of the beam action to the relay device. For example, it can be indicated with a time slot as the granularity, or it can be indicated with the duration of the beam taking effect as the granularity.
  • the first network device can dynamically adjust the scheduling information for the relay device according to the current network conditions, so that the relay device can better assist the communication between the first network device and the terminal device, thereby improving the transmission performance.
  • the following takes the transmission between the first network device (such as gNB) and two terminal devices (such as UE1 and UE2) through a relay device (such as NCR) as an example to illustrate several possible scenarios.
  • a relay device such as NCR
  • other information may be transmitted or not transmitted on the symbols not used to transmit PDCCH1, PDSCH1, PDCCH2 and PDSCH2 in the figure, and this application does not limit this.
  • this application does not limit the beams used to send, receive and forward other information.
  • the gNB sends a signal for UE1 to the NCR through one transmit beam, and sends a signal for UE2 to the NCR through another transmit beam.
  • the NCR receives the signal sent by the gNB through a fixed receive beam, and forwards the received signal for UE1 to UE1 through one forwarding beam, and forwards the received signal for UE2 to UE2 through another forwarding beam.
  • the signals sent by the gNB are transmitted in the same time slot.
  • FIG15 is a schematic diagram of gNB sending signals to UE1 and UE2 through NCR.
  • the gNB can use one transmit beam (beam #A shown in the figure) to send signals in time interval 1 and time interval 3, such as signal 1 and signal 3; and can use another transmit beam (beam #B shown in the figure) to send signals in time interval 2 and time interval 4, such as signal 2 and signal 4.
  • the relay device can use one forwarding beam (beam #0 shown in the figure) in time interval 1 and time interval 3 to forward signals received in time interval 1 and time interval 3, such as signal 1 and signal 3; and can use another forwarding beam (beam #1 shown in the figure) in time interval 2 and time interval 4 to forward signals received in time interval 2 and time interval 4, such as signal 2 and signal 4.
  • one forwarding beam beam #0 shown in the figure
  • another forwarding beam beam #1 shown in the figure
  • Figure 15(b) shows the process of gNB sending signals to UE1 and UE2 through NCR from the time dimension.
  • time intervals 1 to 4 are in the same time slot, and the time slot used to transmit these signals corresponds to the duration of the beam taking effect.
  • gNB sends DCI to NCR in time slot 0, and the DCI carries beam information and time information for scheduling NCR.
  • NCR calculates the time slot when the beam starts to take effect (see the effective time slot marked in the figure).
  • the time slot is time slot 3, that is, the NCR can receive the signal sent by the first network device in time slot 3, and forward the received signal to UE1 and UE2. Since these signals are all transmitted in time slot 3, they are received and forwarded by the beam effective in time slot 3, so time slot 3 can be called an effective time slot.
  • time slot 3 includes multiple symbols, and the figure shows 14 symbols included in time slot 3, which are respectively recorded as symbol 0 to symbol 13.
  • Time interval 1 includes symbol 0 and symbol 1.
  • the gNB uses beam #A to send signals in this time interval, and the NCR uses beam #a to receive signals in this time interval, and uses beam #0 to forward the signals received in this time interval.
  • Time interval 2 includes symbol 2 and symbol 3.
  • the gNB uses beam #B to send signals in this time interval, and the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • Time interval 3 includes symbol 5 to symbol 8.
  • the gNB uses beam #A to send signals in this time interval, and the NCR uses beam #a to receive signals in this time interval, and uses beam #0 to forward the signals received in this time interval.
  • Time interval 4 includes symbol 9 to symbol 13.
  • the gNB uses beam #B to send signals in this time interval, and the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • the effective time domain symbols of beam #A include: symbol 0, symbol 1, symbol 5 to symbol 8; the effective time domain symbols of beam #B include: symbol 2, symbol 3, symbol 9 to symbol 13; the effective time domain symbols of beam #a include: symbol 0 to symbol 3, symbol 5 to symbol 13.
  • the effective time domain symbols of beam #0 include: symbol 0, symbol 1, symbol 5 to symbol 8 and the effective time domain symbols of beam #1 include: symbol 2, symbol 3, symbol 9 to symbol 13.
  • the gNB sends signals for UE1 and UE2 to the NCR through four different transmit beams.
  • the NCR receives the signal sent by the gNB through a fixed receive beam, and forwards the received signal for UE1 to UE1 through a forwarding beam, and forwards the received signal for UE2 to UE2 through another forwarding beam.
  • the signals sent by the gNB are transmitted in the same time slot.
  • FIG16 is another schematic diagram of gNB sending signals to UE1 and UE2 through NCR.
  • the gNB can use four different transmission beams (beam #A, beam #B, beam #C and beam #D as shown in the figure) to send signals in four different time intervals (time interval 1, time interval 2, time interval 3 and time interval 4 as shown in the figure), for example, using beam #A to send signal 1 in time interval 1, using beam #B to send signal 2 in time interval 2, using beam #C to send signal 3 in time interval 3, and using beam #D to send signal 4 in time interval 4.
  • the relay device can use one forwarding beam (beam #0 as shown in the figure) in the time interval 1 and time interval 3 to forward the signals received in time interval 1 and time interval 3, such as signal 1 and signal 3; and can use another forwarding beam (beam #1 as shown in the figure) in time interval 2 and time interval 4 to forward the signals received in time interval 2 and time interval 4, such as signal 2 and signal 4.
  • one forwarding beam beam #0 as shown in the figure
  • another forwarding beam beam #1 as shown in the figure
  • time slot used to transmit the above signal corresponds to the duration of the beam being effective, which will not be described here.
  • the NCR calculates that the time slot in which the beam is effective is time slot 3.
  • time slot 3 includes symbol 0 and symbol 1
  • the gNB uses beam #A to send signals in this time interval
  • the NCR uses beam #a to receive signals in this time interval
  • Time interval 2 includes symbol 2 and symbol 3, the gNB uses beam #B to send signals in this time interval, the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • Time interval 3 includes symbols 5 to 8, the gNB uses beam #C to send signals in this time interval, the NCR uses beam #a to receive signals in this time interval, and uses beam #0 to forward the signals received in this time interval.
  • Time interval 4 includes symbols 9 to 13.
  • the gNB uses beam #D to send signals in this time interval, the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • the effective time domain symbols of beam #A include symbol 0 and symbol 1; the effective time domain symbols of beam #B include symbol 2 and symbol 3; the effective time domain symbols of beam #C include symbol 5 to symbol 8; the effective time domain symbols of beam #D include symbol 9 to symbol 13; the effective time domain symbols of beam #a include: symbol 0 to symbol 3, symbol 5 to symbol 13.
  • the effective time domain symbols of beam #0 include: symbol 0, symbol 1, symbol 5 to symbol 8, and the effective time domain symbols of beam #1 include: symbol 2, symbol 3, symbol 9 to symbol 13.
  • the gNB sends a signal for UE1 and a signal for UE2 to the NCR through a transmit beam.
  • the NCR receives the signal sent by the gNB through a fixed receive beam, and forwards the received signal for UE1 to UE1 through a forwarding beam, and forwards the received signal for UE2 to UE2 through another forwarding beam.
  • the signals sent by the gNB are transmitted in the same time slot.
  • FIG17 is another schematic diagram of gNB sending signals to UE1 and UE2 through NCR.
  • the gNB in the backhaul link, can use the same transmission beam (beam #A shown in the figure) to send signals in four different time intervals (time interval 1, time interval 2, time interval 3 and time interval 4 shown in the figure).
  • beam #A is used to send signal 1 in time interval 1
  • beam #A is used to send signal 2 in time interval 2
  • beam #A is used to send signal 3 in time interval 3
  • beam #A is used to send signal 4 in time interval 4.
  • the transmission beam #A can be indicated by TCI State 0, for example.
  • the relay device can use a forwarding beam (such as beam #0 shown in the figure) in time interval 1 and time interval 3 to forward signals received in time interval 1 and time interval 3, such as signal 1 and signal 3.
  • the forwarding beam #0 can be indicated by Beam index0, for example; and can use another forwarding beam (such as beam #1 shown in the figure) in time interval 2 and time interval 4 to forward signals received in time interval 2 and time interval 4, such as signal 2 and signal 4.
  • the forwarding beam #1 can be indicated by Beam index1, for example.
  • time slot used to transmit the above signal corresponds to the duration of the beam being effective, which will not be described here.
  • the NCR calculates that the time slot in which the beam is effective is time slot 3.
  • time slot 3 includes symbol 0 and symbol 1
  • the gNB uses beam #A to send signals in this time interval
  • the NCR uses beam #a to receive signals in this time interval
  • Time interval 2 includes symbol 2 and symbol 3, the gNB uses beam #A to send signals in this time interval, the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • Time interval 3 includes symbols 5 to 8, the gNB uses beam #A to send signals in this time interval, the NCR uses beam #a to receive signals in this time interval, and uses beam #0 to forward the signals received in this time interval.
  • Time interval 4 includes symbols 9 to 13. The gNB uses beam #A to send signals in this time interval, the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • the effective time domain symbols of beam #A and beam #a include: symbol 0, symbol 1, symbol 5 to symbol 13.
  • the effective time domain symbols of beam #0 include: symbol 0, symbol 2, symbol 5 to symbol 8
  • the effective time domain symbols of beam #1 include: symbol 2, symbol 3, symbol 9 to symbol 13.
  • the gNB sends a signal for UE1 to the NCR through one transmit beam, and sends a signal for UE2 to the NCR through another transmit beam.
  • the NCR receives the signal sent by the gNB through a fixed receive beam, and forwards the received signal for UE1 to UE1 through one forwarding beam, and forwards the received signal for UE2 to UE2 through another forwarding beam.
  • the signals sent by the gNB are transmitted in the same time slot.
  • FIG18 is another schematic diagram of gNB sending signals to UE1 and UE2 through NCR.
  • the gNB in the backhaul link, can use different transmission beams to send signals in two different time intervals (time interval 1 and time interval 2 as shown in the figure), for example, using beam #A to send signal 1 in time interval 1 and using beam #B to send signal 2 in time interval 2.
  • the relay device can use a forwarding beam (beam #0 as shown in the figure) in time interval 1 to forward the signal received in time interval 1, such as signal 1; and can use another forwarding beam (beam #1 as shown in the figure) in time interval 2 to forward the signal received in time interval 2, such as signal 2.
  • the time slot used to transmit the above signal corresponds to the duration of the beam taking effect, which will not be described here.
  • the NCR calculates that the time slot for the beam to take effect is time slot 3
  • the duration of the beam taking effect is 5 time slots
  • the time domain symbol for the beam taking effect can be determined based on the same beam information and time information for the 5 time slots from time slot 3 to time slot 7.
  • FIG. 18 shows the time domain symbol for the beam taking effect by taking time slot 3 as an example.
  • time interval 1 includes symbol 0 and symbol 1
  • the gNB uses beam #A to send signals in this time interval
  • the NCR uses beam #a to receive signals in this time interval, and uses beam #0 to forward the signals received in this time interval.
  • Time interval 2 includes symbols 4 to 13, and the gNB uses beam #B to send signals in this time interval, and the NCR uses beam #a to receive signals in this time interval, and uses beam #1 to forward the signals received in this time interval.
  • the effective time domain symbols of beam #A include symbol 0 and symbol 1; the effective time domain symbols of beam #B include symbol 4 to symbol 13; the effective time domain symbols of beam #a include: symbol 0 and symbol 1, symbol 4 to symbol 13.
  • the effective time domain symbols of beam #0 include: symbol 0 and symbol 1
  • the effective time domain symbols of beam #1 include: symbol 4 to symbol 13.
  • the beam indicated by the beam information may be effective in K time intervals, or in other words, the beam information
  • the indicated beam can act on K time intervals. That is, the beam indicated by the beam information can be used to receive signals and/or forward signals in the k time intervals.
  • the K time intervals can refer to the time intervals used to transmit signals within the duration of the beam taking effect.
  • the time domain symbol at which the beam indicated by the beam information begins to take effect can be determined.
  • the time information can be used to indicate the time domain symbol corresponding to each of the above-mentioned K time intervals in the time slot, that is, the starting time domain symbol and length of each of the K time intervals in the time slot.
  • the length of the time interval can be represented by the number of time domain symbols contained in the time interval.
  • the time domain symbols corresponding to the K time intervals in the time slot are determined, that is, the position of each of the K time intervals in the time slot is determined.
  • the time information can also be regarded as indicating the position of each of the above-mentioned K time intervals in the time slot. It should be understood that the position of the time interval in the time slot mentioned here can be relative to the starting time domain symbol of a time slot, so the position of the time interval in the time slot can specifically refer to the relative position of the time interval in the time slot.
  • Different time intervals can be used to carry different types of signals.
  • the different types of signals may be signals sent to different terminal devices and/or signals with different functions, such as control signals (such as PDCCH, PUCCH), or data signals (such as PDSCH, PUSCH), etc.
  • control signals such as PDCCH, PUCCH
  • data signals such as PDSCH, PUSCH
  • PDCCH1 and PDSCH1 sent to UE1 are four different types of signals.
  • K max may be pre-configured by the first network device through signaling.
  • the time information may include K groups of indicator bits corresponding to K time intervals, the values of the first indicator bit and the last indicator bit of each group of indicator bits are preset values, and the number of bits of each group of indicator bits is used to determine the length of the corresponding time interval, that is, the number of time domain symbols contained in the time interval.
  • the first indicator bit of each group of indicator bits is used to determine the starting symbol of the corresponding time interval.
  • This implementation can be regarded as a rule, which is used for the first network device to generate time information and the relay device to parse the time information.
  • the rule is described in more detail below.
  • each group of indication bits may include a plurality of bits starting from the first preset value and ending at the second preset value.
  • the first preset value and the second preset value may be the same value or different values, which is not limited in this application.
  • the number of bits in each group of indicator bits may be used to determine the length of a corresponding time interval.
  • the first preset value and the second preset value are "1". Therefore, in the K groups of indication bits, every two "1"s correspond to a group of indication bits, indicating a time interval. In the K groups of indication bits, the odd-numbered "1" indicates the starting position of the time interval, and the next "1" thereafter indicates the ending position of the time interval.
  • the number of bits of each group of indication bits can be used to determine the number of time domain symbols contained in the indicated time interval.
  • the first preset value and the second preset value correspond to the same bit, which may cause errors in the determination of the subsequent time range.
  • the empty bits between the first preset value and the second preset value are filled with one or more third preset values, and the third preset value is different from the first preset value and the second preset value, such as "0".
  • the first preset value and the second preset value occupy two bits, they correspond to the same time domain symbol. That is, when the time interval contains a time domain symbol, the corresponding set of indication bits occupies two bits.
  • a third preset value is filled between the first preset value and the second preset value, and the corresponding set of indication bits occupies three bits.
  • the number of time domain symbols contained in the time interval is the number of third preset values between the first preset value and the second preset value in the corresponding set of indication bits plus one.
  • the number of time domain symbols contained in each time interval is the number of bits of the corresponding set of indication bits minus one.
  • the number of bits of each set of indication bits is the number of time domain symbols contained in the indicated time interval plus one.
  • the end position of the previous group i.e., the position where the second preset value is located
  • the number of bits between the first and second preset positions can represent the number of time domain symbols between the two time intervals.
  • the value of the bit between the two can be set to a fourth preset value different from the first preset value and the second preset value, such as "0".
  • the odd-numbered "1"s in the K groups of indicator bits can be used to determine the starting time domain symbol of each time interval in the time slot to which it belongs.
  • the position of the first "1" in the first group of indicator bits can be used to determine the position of the starting time domain symbol of the first time interval in the time slot;
  • the number of bits in the first group of indicator bits can be used to determine the number of time domain symbols contained in the first time interval.
  • the starting time domain symbol of the second time interval can be determined based on the number of bits between the first time interval and the second time interval, and then the number of time domain symbols contained in the second time interval can be determined based on the number of bits in the second group of indicator bits.
  • the K time intervals corresponding to the K groups of indicator bits can be determined.
  • the length of the time information can be Q+K max bits, where Q is the number of time domain symbols contained in each time slot; K max is the maximum value of K, which can be preconfigured; Q and K max are positive integers.
  • the length of the time information can be P ⁇ Q+K max bits, where P is a positive integer, Q is a positive integer, and Q can be 12 or 14, for example.
  • the first network device determines K groups of indication bits for indicating the K time intervals according to the starting time domain symbol and length of each time interval in the K time intervals in the corresponding time slot.
  • the relay device can also parse the received K groups of indication bits based on the same rules to determine the starting time domain symbol and length of each time interval in the K time intervals in the corresponding time slot.
  • the first preset value is “1”
  • the second preset value is “1”
  • the third preset value and the fourth preset value are "0”.
  • the first preset value is “1"
  • the second preset value is “1”
  • each type of signal may correspond to two “1”
  • the first preset value "1” corresponds to the start symbol of the signal
  • the second "1” corresponds to the end symbol of the signal.
  • the number of bits between the two “1”s can be used to determine the duration of the signal.
  • the indicator bit "11” indicates that the signal lasts for one symbol.
  • the number of bits between the two “1”s and the duration of the signal can be obtained by adding 1 to the number of bits between the two “1”.
  • the indicator bit “101” indicates that the duration of the signal is 2 symbols; the indicator bit "10001" indicates that the duration of the signal is 4 symbols.
  • FIG. 19 shows four time intervals in one time slot, specifically including: time interval 1 to time interval 4.
  • time interval 1 occupies symbol 0, includes 1 time domain symbol, and the corresponding set of indication bits is "11"; time interval 2 occupies symbol 2 and symbol 3, includes 2 time domain symbols, and the corresponding set of indication bits is "101"; time interval 3 occupies symbol 5 to symbol 8, includes 4 time domain symbols, and the corresponding set of indication bits is "10001"; time interval 4 occupies symbol 9 to time domain symbol 13, includes 5 time domain symbols, and the corresponding set of indication bits is "100001".
  • Figure 19 shows four types of signals transmitted in a time slot, specifically including: time interval 1 containing 1 time domain symbol, time interval 2 containing 1 time domain symbol, time interval 1 containing 4 time domain symbols, and time interval 2 containing 5 time domain symbols.
  • time interval 1 occupies symbol 0, includes 1 time domain symbol, and the corresponding set of indication bits is "11"
  • time interval 2 occupies symbol 2, includes 1 time domain symbol, and the corresponding set of indication bits is “11”
  • time interval 3 occupies symbol 5 to symbol 8, includes 4 time domain symbols, and the corresponding set of indication bits is "10001”
  • time interval 4 occupies symbol 9 to symbol 13, includes 5 time domain symbols, and the corresponding set of indication bits is "100001".
  • FIG. 19 shows two time intervals in one time slot, specifically including: time interval 1 and time interval 2.
  • time interval 1 occupies symbol 0 and symbol 1, includes 2 time domain symbols, and the corresponding set of indication bits is "101"; time interval 2 occupies symbol 5 to symbol 13, includes 9 time domain symbols, and the corresponding set of indication bits is "1000000001".
  • the time information corresponding to the four time intervals It can be expressed as “101101010001100001”, where “101”, “101”, “10001” and “100001” are four groups of indication bits corresponding to four time intervals.
  • the relay device is not used to receive and forward signals, or the beam of the relay device is deactivated.
  • the time information can also be used to indicate the time slots where the relay function is turned off.
  • the indication bits in the time information are all preset values (such as "0"), or contain an odd number of preset values (such as "1"), and the time information indicates that the relay function is turned off.
  • each time interval can correspond to 2 "1s"
  • the time information corresponding to a time slot is "000000000000000000” or "00100010000000100", both of which indicate that the relay function of the time slot is disabled.
  • the time information includes an index value corresponding to a combination of a start symbol and a length of each time interval in the k time intervals.
  • the first network device may determine the index value corresponding to the starting time domain symbol and length of the K time intervals according to a predefined third mapping relationship.
  • the relay device may determine the starting time domain symbol and length of the K time intervals according to the index value in the received time information and the predefined third mapping relationship.
  • the third mapping relationship includes a mapping relationship between multiple combinations of the starting time domain symbol and length of each time interval in the K time intervals and multiple index values.
  • S represents the start time domain symbol (start symbol)
  • L represents the length (length, L), which can be counted by the number of time domain symbols
  • subscripts 1 to 4 represent time intervals 1 to 4, such as S 1 represents the start time domain symbol of time interval 1, L 1 represents the length of time interval 1, and so on, which will not be repeated.
  • time intervals 1 to 4 can be obtained by sorting in time.
  • the starting time domain symbol of time interval 1 is symbol 0, and the length is 2; the starting time domain symbol of time interval 2 is symbol 2, and the length is 2; the starting time domain symbol of time interval 3 is symbol 5, and the length is 4; the starting time domain symbol of time interval 4 is 9, and the length is 5, then the corresponding index value can be obtained as 7.
  • the above time information can specifically include the index value. For example, it can be represented by a 7-bit binary value "0000111".
  • the starting time domain symbol and length of each time interval are both 0, indicating that the relay function of the time slot is turned off, the relay device is not used to receive and forward signals, or the beam of the relay device is deactivated. This is similar to the effect of indicating that the relay function of a time slot is turned off by indicating bits with all "0" or indicating bits containing an odd number of "1" in the previous implementation. For the sake of brevity, it will not be repeated.
  • the value of K is not fixed. Therefore, the value range of K can be predefined, and then within the value range, for each optional value of K, the corresponding relationship between the starting time domain symbol and the length of the duration of each type of signal in K time intervals and multiple combinations of multiple index values can be predefined. That is, for each optional value of K, a set of mapping relationships can be predefined.
  • the first network device can indicate the value of K through high-level signaling (such as RRC message), and then find the corresponding mapping relationship.
  • One possible design is to define a third mapping relationship for each possible value of K, and the index values in the third mapping relationship table under different values of K can be reused.
  • the required index values are also small, so a small number of bits can be used to indicate, and the corresponding time information can occupy a small number of bits.
  • Another possible design is to define a third mapping relationship for multiple possible values of K, for example, from 1 (i.e., the minimum value that K can take) to K max (i.e., the maximum value that K can take).
  • K max i.e., the maximum value that K can take.
  • the first network device and the relay device may negotiate in advance which design as exemplified above is adopted to save the third mapping relationship, and then when the first network device indicates the position of each time interval in the time slot of the K time intervals through time information, the time information may be generated based on the third mapping relationship.
  • the relay device may also parse the time information based on the same third mapping relationship to determine the position of each time interval in the time slot of the K time intervals.
  • the third mapping relationship may be predefined by the protocol or preconfigured by the network device.
  • the third mapping relationship may be pre-configured by the first network device through high-level signaling (such as an RRC message).
  • the first network device sends an RRC message to the relay device, and the RRC message carries information for indicating the third mapping relationship.
  • the relay device may determine the third mapping relationship based on the received RRC message.
  • the first network device can indicate the backhaul link beam and the access link beam separately, such as based on the correspondence shown in Tables 1 and 2; it can also indicate the backhaul link beam and the access link beam jointly, such as based on the correspondence shown in Table 3.
  • the beam indicated by the beam information is effective in K time intervals, and there is a possibility that the same beam is effective in multiple time intervals. Therefore, the first network device can indicate the beam that is effective in each time interval based on the granularity of the time interval.
  • the beam information may include M fields for indicating a backhaul link beam and/or N fields for indicating an access link beam.
  • the field for indicating a backhaul link beam may be referred to as a backhaul link beam indication field, and the indication bit carried in each backhaul link beam indication field may be used to indicate a backhaul link beam.
  • the field for indicating an access link beam may be referred to as an access link beam indication field, and the indication bit carried in each access link beam indication field may be used to indicate an access link beam.
  • the above beam information includes M backhaul link beam indication fields and/or N access link beam indication fields.
  • N 4, that is, the number of access link beam indication fields does not exceed 4.
  • M ⁇ N that is, the number of return link beam indication fields does not exceed the number of access link indication fields.
  • M 1, that is, the number of return link indication fields is 1.
  • the first network device may specifically indicate the transmission beam (i.e., an example of a backhaul link beam) and the forwarding beam (i.e., an example of an access link beam) to the relay device through beam information.
  • Each of the M backhaul link beam indication fields may indicate a transmission beam
  • each of the N access link beam indication fields may indicate a forwarding beam.
  • N, M and K can satisfy: N ⁇ K, and/or, M ⁇ K. Since K ⁇ K max , N, M and K max can satisfy: N ⁇ K max , and/or, M ⁇ K max . That is, in the beam information, the number M of the backhaul link beam indication field and the number N of the access link beam indication field can be determined based on K max .
  • the backhaul link beam indication field used to indicate the backhaul link beam may be one of the M backhaul link beam indication fields, which may be recorded as the first backhaul link beam indication field in this article.
  • the mapping relationship between the backhaul link beam and the K time intervals and the mapping relationship between the access backhaul link beam and the K time intervals can be determined.
  • the relationship between M, N, and K may be further considered.
  • the M backhaul link beam indication fields and the N access link beam indication fields are arranged in the beam information in the order of the time when the beams indicated by them are effective, so that the beams can be matched with the effective time intervals. Therefore, the mapping relationship between the beams indicated by the M backhaul link beam indication fields and the K time intervals, and the mapping relationship between the beams indicated by the N access backhaul link beam indication fields and the K time intervals can be determined.
  • the backhaul link beam indicated by at least one backhaul link beam indication field in the M backhaul link beam indication fields can be effective in multiple time intervals.
  • the backhaul link beam indicated by at least one backhaul link beam indication field i.e., an example of the first backhaul link beam indication field
  • the beam indicated by at least one backhaul link beam indication field is effective in multiple time intervals among the four time intervals.
  • one of the two backhaul link beam indication fields indicates backhaul link beam 1, and the other indicates backhaul link beam 2.
  • backhaul link beam 1 can be effective in two time intervals among the four time intervals
  • backhaul link beam 2 can be effective in the other two time intervals among the four time intervals.
  • the access link beam indicated by at least one access link beam indication field in the N access link beam indication fields may be effective in multiple time intervals.
  • the access link beam indicated by at least one access link beam indication field in the N access link beam indication fields may be effective in multiple time intervals.
  • the mapping relationship between the beam and the time interval is uncertain.
  • the first network device may additionally indicate in which specific time intervals the beam is effective. Therefore, the first network device may further send a first indication message to indicate multiple time intervals in which the same beam is effective. Since a beam can be effective in multiple time intervals, the first indication message also specifies the mapping relationship between a beam and multiple time intervals.
  • the first indication message may be carried in high-level signaling, such as an RRC message.
  • 20 and 21 are two schematic diagrams of beam information and time information.
  • the beam indicated by the beam information is effective in four time intervals, including: time interval 1, including symbol 0 and symbol 1; time interval 2, including symbol 2 and symbol 3; time interval 3, including symbol 5 to symbol 8; time interval 4, including symbol 9 to symbol 13.
  • time interval 1 and time interval 3 are effective in time interval 1 and time interval 3
  • beam #B and beam #1 are effective in time interval 2 and time interval 4.
  • Each transmit beam can be indicated by a backhaul link beam indication field respectively.
  • bits 0 to 2 and bits 3 to 5 are two backhaul link beam indication fields, bits 0 to 2 are used to indicate beam #A, and bits 3 to 5 are used to indicate beam #B.
  • bits 6 to 8, bits 9 to 11, bits 12 to 14 and bits 15 to 17 are four access link beam indication fields, bits 6 to 8 are used to indicate beam #0; bits 9 to 11 are used to indicate beam #1; bits 12 to 14 are used to indicate beam #0; bits 15 to 17 are used to indicate beam #1.
  • the two return link beam indication fields and the four access link beam indication fields respectively indicate the transmission beam and forwarding beam effective in the time slot, as well as the time interval in which each forwarding beam is effective.
  • the first indication information is used to indicate.
  • beam #A is effective in time interval 1 and time interval 3
  • beam #B is effective in time interval 2 and time interval 4.
  • the time intervals in which each beam is effective can be indicated by 4 bits corresponding to 4 time intervals, and different values corresponding to different beams. For example, beam #A corresponds to the bit value "0”, and beam #B corresponds to the bit value "1", then the first indication information can be "0101".
  • the relay device can determine the forwarding beams and their respective effective time intervals according to the four access link beam indication fields, and can determine the transmission beams according to the two return link beam indication fields.
  • the effective time interval of each transmission beam can be further determined in combination with the first indication information additionally sent by the first network device.
  • FIG. 21 Another example is shown in Figure 21.
  • the time information and beam information shown in Figure 21 are the same as the time information and beam information shown in Figure 20, and are not repeated here.
  • the difference is that beam #A is effective in time interval 1 and time interval 2, and beam #B is effective in time interval 3 and time interval 4.
  • the beam #A and beam #B can be indicated by a return link beam indication field respectively.
  • the first indication information is also different.
  • the first indication information is generated in the manner of the above example, each bit corresponds to a time interval, beam #A corresponds to the bit value "0", and beam #B corresponds to the bit value "1", then the first indication information can be "0011".
  • the relay device can determine the forwarding beams and their respective effective time intervals based on the four access link beam indication fields, and can determine the transmission beams based on the two return link beam indication fields.
  • the effective time intervals of each transmission beam can be further determined in combination with the first indication information additionally sent by the first network device.
  • Fig. 22 is another schematic diagram of beam information and time information.
  • the time information shown in Fig. 22 is the same as that in Fig. 20, and the time interval determined thereby is also the same as that shown in Fig. 20, and will not be described in detail.
  • beam #A and beam #0 are effective in time interval 1
  • beam #B and beam #1 are effective in time interval 2
  • beam #C and beam #0 are effective in time interval 3
  • beam #D and beam #1 are effective in time interval 4.
  • the four time intervals can correspond to the four backhaul link beam indication fields one by one, and each transmission beam can be indicated by a backhaul link beam indication field, as shown in FIG22 , bits 0 to 3, bits 3 to 5, bits 6 to 8, and bits 9 to 11 are four backhaul link beam indication fields. Bits 0 to 2 are used to indicate beam #A, bits 3 to 5 are used to indicate beam #B; bits 6 to 8 are used to indicate beam #C, and bits 9 to 11 are used to indicate beam #D.
  • the four time intervals can correspond to the four access link beam indication fields one by one, and each forwarding beam can also be indicated by an access link beam indication field, as shown in FIG22 , bits 12 to 14, bits 15 to 17, bits 18 to 20, and bits 21 to 23 are four return link beam indication fields. Bits 12 to 14 are used to indicate beam #0, bits 15 to 17 are used to indicate beam #1; bits 18 to 20 are used to indicate beam #C, and bits 21 to 23 are used to indicate beam #D.
  • the above four return link beam indication fields and the four access link beam indication fields respectively indicate the transmission beams and forwarding beams effective in the time slot, as well as the time intervals in which each transmission beam is effective and the time intervals in which each forwarding beam is effective.
  • the relay device can determine the forwarding beams and their respective effective time intervals according to the four return link beam indication fields, and can determine the transmission beams and their respective effective time intervals according to the four access link beam indication fields.
  • the schematic diagram of the beam information and time information in scenario three is similar to Figure 20, and can be explained with reference to Figure 20.
  • the time information in scenario three is the same as that shown in scenario one, and will not be repeated.
  • beam #A is effective from time interval 1 to time interval 4
  • beam #0 is effective from time interval 1 to time interval 3
  • beam #1 is effective from time interval 2 to time interval 4.
  • bits 6 to 8, bits 9 to 11, bits 12 to 14 and bits 15 to 17 are four access link beam indication fields, bits 6 to 8 are used to indicate beam #0; bits 9 to 11 are used to indicate beam #1; bits 12 to 14 are used to indicate beam #0; bits 15 to 17 are used to indicate beam #1.
  • the number of transmitted beams is 1, so the four time intervals cannot be matched one by one with the two backhaul link beam indication fields. Therefore, the two backhaul link beam indication fields cannot correspond one-to-one to one transmission beam.
  • the transmission beam can be indicated by two backhaul link beam indication fields.
  • bits 0 to 2 and bits 3 to 5 are two backhaul link beam indication fields
  • bits 0 to 2 are used to indicate beam #A
  • bits 3 to 5 are also used to indicate beam #A.
  • the time interval during which the beam indicated by each backhaul link beam indication field is effective is indicated by the first indication information.
  • the first indication information can be "0011", "0101" or "1010".
  • the relay device can determine the forwarding beams and their respective effective time intervals according to the four access link beam indication fields, and can determine the transmission beams according to the two return link beam indication fields.
  • the effective time interval of each transmission beam can be further determined in combination with the first indication information additionally sent by the first network device.
  • FIG23 Another possible method is shown in FIG23, where the two return link beam indication fields are bits 0 to 2 and bits 3 to 5 in the figure.
  • the transmission beam can be indicated by one return link beam indication field, such as bits 0 to 2, and the other return link beam indication field is set to a preset value, such as "000", such as bits 3 to 5 are set to "000".
  • the relay device can determine the forwarding beams and their respective effective time intervals based on the four access link beam indication fields, and can determine the transmission beam and its effective time interval based on a return link beam indication field.
  • FIG. 24 is another schematic diagram of beam information and time information.
  • the beam indicated by the beam information is effective in two time intervals, including: time interval 1, including symbol 0 to symbol 1, and time interval 2, including symbol 4 to symbol 13.
  • time interval 1 including symbol 0 to symbol 1
  • time interval 2 including symbol 4 to symbol 13.
  • beam #A and beam #0 are effective in time interval 1
  • beam #B and beam #1 are effective in time interval 2.
  • the two time intervals can correspond one-to-one to the two backhaul link beam indication fields, and each transmit beam can be indicated by a backhaul link beam indication field respectively.
  • bits 0 to 2 and bits 3 to 5 are two backhaul link beam indication fields, bits 0 to 2 are used to indicate beam #A, and bits 3 to 5 are used to indicate beam #B.
  • the two time intervals can correspond to the two access link beam indication fields one by one, and each transmission beam can be indicated by a return link beam indication field respectively, and the remaining two access link beam indication fields can be set to preset values.
  • bits 6 to 8, bits 9 to 11, bits 12 to 14, and bits 15 to 17 are four access link beam indication fields, bits 6 to 8 are used to indicate beam #0; bits 9 to 11 are used to indicate beam #1; bits 12 to 14 and bits 15 to 17 can be set to preset values.
  • a small number of bits can be used to indicate the return link beams and access link beams that are effective in multiple time intervals in a time slot.
  • the relay device can respond to the scheduling of the first network device and use the corresponding beams to receive signals and forward signals in different time intervals, thereby realizing the dynamic scheduling of the relay device by the first network device, which is conducive to the relay device to better assist the transmission between the first network device and the terminal device and improve the transmission performance.
  • the duration of the beam taking effect is 5 time slots
  • the network device can also indicate the duration of the beam taking effect to the relay device. Based on the duration, the relay device can determine that the time intervals in which each beam takes effect in different time slots from time slot 3 to time slot 7 are the same. In this way, the beam taking effect in each time slot in multiple time slots and the time interval in which each beam takes effect can be determined by indicating the beam information and time information once. Thus, the signaling overhead can be greatly reduced on the basis of ensuring the transmission performance.
  • the beam information may include K indication fields corresponding to the K time intervals one by one.
  • the indication bit in each indication field indicates the beam that is effective in the corresponding time interval.
  • a possible implementation manner of the one-to-one correspondence between the K indicator fields and the K time intervals is to arrange the K indicator fields in the order of the K time intervals so that the K indicator fields correspond one-to-one with the K time intervals.
  • the backhaul link beam and the access link beam may be indicated separately.
  • the first network device may determine the indication bit of the backhaul link beam and the indication bit of the access link beam effective in each time interval based on the correspondence shown in Table 1 and Table 2 above.
  • each indication field in the K indication fields includes two subfields, one for the return link beam and the other for the access link beam. Therefore, the two subfields can be the aforementioned return link beam indication field and the access link beam indication field, respectively.
  • bits 0 to 2 and bits 12 to 14 are an indication field corresponding to time interval 1, which can be regarded as two subfields of the indication field; bits 3 to 5 and bits 15 to 17 are an indication field corresponding to time interval 2, which can be regarded as two subfields of the indication field; bits 6 to 8 and bits 18 to 20 are an indication field corresponding to time interval 3, which can be regarded as two subfields of the indication field; bits 9 to 11 and bits 21 to 23 are an indication field corresponding to time interval 4, which can be regarded as two subfields of the indication field.
  • bits 0 to 2, bits 3 to 5, bits 6 to 8, and bits 9 to 11 are arranged in the order of time intervals 1, 2, 3, and 4, and bits 12 to 14, bits 15 to 17, bits 18 to 20, and bits 21 to 23 are also arranged in the order of time intervals 1, 2, 3, and 4.
  • the K indication fields can be mapped one by one to the K time intervals.
  • bits 0 to 2 and bits 3 to 5 may be used as an indication field corresponding to time interval 1
  • bits 6 to 8 and bits 9 to 11 may be used as an indication field corresponding to time interval 2
  • bits 12 to 14 and bits 15 to 17 may be used as an indication field corresponding to time interval 3
  • bits 18 to 20 and bits 21 to 23 may be used as an indication field corresponding to time interval 4.
  • the K indication fields may correspond to the K time intervals one by one.
  • the backhaul link beam and the access link beam may also be jointly indicated.
  • the first network device may determine the indication bit corresponding to the combination of the backhaul link beam and the access link beam effective in each time interval based on the corresponding relationship shown in Table 3 above.
  • the K indication fields may still correspond one-to-one to the K time intervals.
  • each of the K indication fields includes 4 bits, and the indication bits in each indication field indicate a combination of a backhaul link beam and an access link beam.
  • the four indication fields can also be arranged in the order of time intervals 1, 2, 3, and 4. For example, bits 0 to 3 correspond to time interval 1, bits 4 to 7 correspond to time interval 2, bits 8 to 11 correspond to time interval 3, and bits 9 to 12 correspond to time interval 4. In this way, the K indication fields can be matched one by one with the K time intervals.
  • the K group indication field belongs to a predefined K max group indication field.
  • the K group indication field may be a part of the predefined K max group indication field. That is, K may be less than K max .
  • the field not used for transmitting signals may be set to a preset value, such as "000", indicating that the relay function of the time interval is turned off, that is, no signal reception or forwarding is performed, or the beam is deactivated.
  • a small number of bits can be used to indicate the return link beams and access link beams that are effective in multiple time intervals in a time slot, and since K indication fields correspond to K time intervals, one or more time intervals in which each beam is effective can be obtained without the need to use other signaling to additionally indicate the correspondence between the beam and the time interval.
  • the relay device can respond to the scheduling of the first network device and use the corresponding beam to receive and forward signals in different time intervals, thereby realizing the dynamic scheduling of the relay device by the first network device, which is conducive to the relay device better assisting the transmission between the first network device and the terminal device and improving the transmission performance.
  • the effective beam may be indicated one by one for each time domain symbol.
  • the beam information may include Q indication fields, corresponding one to one with the Q time domain symbols, where Q is the number of time domain symbols included in the time slots where the K time intervals are located.
  • the indication overhead is large.
  • the backhaul link beam and the access link beam can be combined. Indication. That is, the first network device may determine the indication bit corresponding to the combination of the backhaul link beam and the access link beam effective in each time domain symbol based on the corresponding relationship shown in Table 3 above.
  • FIG. 25 is another schematic diagram of beam information.
  • the beam information includes 14 indication fields corresponding to 14 time domain symbols one by one, and each indication field indicates the effective beam through 4 bits. Since there may be beams that are not effective on some time domain symbols, they can be identified by the preset value "0000".
  • FIG. 25 includes a total of 14 indication fields, among which bits 0 to 3, bits 4 to 7, bits 8 to 11, bits 12 to 15, bits 20 to 23, bits 24 to 27, bits 28 to 31, bits 32 to 35, bits 36 to 39, bits 40 to 43, bits 44 to 47, bits 48 to 51 and bits 52 to 55 respectively indicate a combination of a backhaul link beam and an access link beam, and bits 16 to 19 indicate that the relay function is turned off.
  • each backhaul link beam and access link beam can be determined by referring to the mapping relationship exemplified in Table 3 above.
  • the first network device can directly indicate the effective beam for the time domain symbol with a beam, and indicate that the relay function is turned off for the time domain symbol without a beam.
  • the relay device can also determine the effective return link beam and access link beam on each time domain symbol based on the above mapping relationship, and then further determine the different time intervals in which different beams are effective according to the difference in the effective beams on different time domain symbols.
  • the return link beam and access link beam indicated by bits 0 to 3 and bits 4 to 7 are different from the return link beam and access link beam indicated by bits 8 to 11 and bits 12 to 15, so it can be determined that symbol 1 and symbol 2 belong to one time interval, and symbol 3 and symbol 4 belong to another time interval.
  • the time domain symbols contained in different time intervals can be obtained. Therefore, through the correspondence between beams and symbols, the correspondence between different beams and different time intervals can also be obtained.
  • each indication field exemplified above may also indicate the backhaul link beam and the access link beam separately, for example, according to the correspondence relationship exemplified above in combination with Table 1 and Table 2.
  • Table 1 and Table 2 For the sake of brevity, no further illustration is provided here.
  • a small number of bits can be used to indicate the return link beam and access link beam that are effective on each time domain symbol in a time slot.
  • the relay device can respond to the scheduling of the first network device and use the corresponding beam to receive and forward signals on different time domain symbols, thereby realizing the dynamic scheduling of the relay device by the first network device, which is conducive to the relay device to better assist the transmission between the first network device and the terminal device and improve the transmission performance.
  • the aforementioned beam information and time information may be used to indicate the beam of one or more time slots, the forwarding timing (i.e., the time interval when the beam is effective), and the amplification gain. If the beam information and time information are carried in the DCI, that is, one DCI may be used to indicate the beam of one or more time slots, the time when the beam is effective, and the amplification gain.
  • Each time slot may include a forwarding opportunity.
  • the indication of the beam, forwarding opportunity and amplification gain of each time slot may be indicated by 14 bits.
  • the indication of the beam, forwarding opportunity and amplification gain of multiple time slots may be indicated by the number of time slots ⁇ 14 bits. For example, if the number of time slots is 5, a total of 70 bits (obtained by 14 ⁇ 5) are required to indicate.
  • the number of time slots can be pre-configured by the first network device, such as by high-level signaling.
  • the starting position of the one or more time slots i.e., the time slots at which the aforementioned beams begin to take effect, can be determined according to the method provided in the foregoing text in combination with FIG. 13 and FIG. 14, and will not be repeated here.
  • Table 14 shows an example in which 14 bits corresponding to one time slot are used to indicate various information.
  • the combination of multiple forwarding opportunities may specifically refer to 16 combinations of multiple forwarding opportunities in multiple time slots. Since the multiple time slots may not necessarily be configured with a forwarding opportunity, and the time domain symbols corresponding to the forwarding opportunities configured in different time slots may not necessarily be the same, that is, the positions may not necessarily be the same, therefore, multiple possible combinations may be predefined for the multiple forwarding opportunities. Regarding the combination of multiple forwarding opportunities, please refer to the description in the previous text combined with Table 13. The difference is that the multiple forwarding opportunities are in multiple different time slots, which will not be repeated here.
  • the power offset may specifically refer to an offset relative to a preset reference power.
  • the preset reference power may be predefined by a protocol, or preconfigured by the first network device. This application does not limit this.
  • One possible scenario is that when the beam information and time information are used to indicate the beams, forwarding timing and amplification gains of multiple time slots, it is not necessarily the case that a beam is effective in each of the multiple time slots.
  • a preset bit value (such as "0") can be used to indicate this. For example, all 14 bits corresponding to the time slot are set to "0".
  • the first network device can indicate the beam, forwarding timing and amplification gain of one or more time slots through beam information and time information, and the relay device can respond to the scheduling of the first network device and use the corresponding beam to receive signals and forward signals on different time domain symbols. Since the beam, forwarding timing and amplification gain of multiple time slots can be determined through one indication, the number of signaling interactions between the relay device and the first network device can be reduced, power consumption can be saved, and at the same time, dynamic scheduling of the relay device by the first network device can be realized.
  • the relay device can receive control signaling such as beam information and time information through the controller (MT), and can forward the received signal through the forwarding module (Fwd).
  • control signaling such as beam information and time information through the controller (MT)
  • Fwd forwarding module
  • the signal forwarded by the relay device can be called a forwarding signal.
  • the time granularity of the forwarding signal and the control signaling sent by the first network device through the backhaul link may be different. Therefore, the first network device can also send the time granularity information of the forwarding signal to indicate the time granularity, thereby ensuring that the relay device accurately obtains and configures the time interval for the beam to take effect.
  • the time granularity information can be used to determine the length of the time slot and/or time domain symbol corresponding to the time interval between the control signaling and the forwarding opportunity (such as the time interval between the DCI and the time slot when the beam starts to take effect as shown in Figure 13), and/or, the time granularity information can be used to determine the length of the time slot and/or time domain symbol corresponding to at least one time interval.
  • the time granularity of the length of the time slot and/or time domain symbol corresponding to the time interval between the control signaling and the forwarding opportunity (i.e., the aforementioned time interval) is recorded as the first time granularity
  • the time granularity information of the length of the time slot and/or time domain symbol corresponding to the forwarding opportunity is recorded as the second time granularity.
  • One possible design is that the first time granularity is different from the second time granularity.
  • control signaling includes DCI and/or RRC. That is, the time slot length corresponding to the time interval between DCI and/or RRC and the forwarding opportunity is different from the time slot length corresponding to the forwarding opportunity, and/or the time domain symbol length corresponding to the time interval between DCI and/or RRC and the forwarding opportunity is different from the time domain symbol length corresponding to the forwarding opportunity.
  • the first time granularity and the second time granularity can be indicated by different time granularity information.
  • the first time granularity is the same as the second time granularity.
  • the control signaling includes DCI and/or RRC. That is, the time slot length corresponding to the time interval between DCI and/or RRC and the forwarding opportunity is the same as the time slot length corresponding to the forwarding opportunity, and/or, the length of the time domain symbol corresponding to the time interval between DCI and/or RRC and the forwarding opportunity is the same as the length of the time domain symbol corresponding to the forwarding opportunity.
  • the first time granularity and the second time granularity can be indicated by the same time granularity information.
  • Another possible design is that the time granularities corresponding to the forwarding opportunities used for downlink forwarding are the same.
  • Another possible design is that the time granularities corresponding to the forwarding opportunities used for uplink forwarding are the same.
  • time granularity corresponding to the forwarding opportunity for uplink forwarding is different from the time granularity corresponding to the forwarding opportunity for downlink forwarding.
  • different time granularity information may be used to indicate the respective time granularities for uplink forwarding and downlink forwarding.
  • the length of the time slot and/or time domain symbol used by the relay device to forward the received signal corresponds to the SCS used by the forwarding module to forward the received signal.
  • the relay device forwards the received signal through the forwarding module.
  • the relay device forwards the received signal, that is, the relay device forwards the received signal through the forwarding module.
  • the time slot used by the relay device to forward the received signal through the forwarding module is the time slot where the time domain symbol shown in the above text and the accompanying drawings is located.
  • the first network device may configure the index of the SCS through the second indication information (ie, an example of time granularity information) so that the relay device determines the length of the time slot and/or time domain symbol used to forward the received signal based on the index of the SCS.
  • the second indication information ie, an example of time granularity information
  • the method further includes: the first network device sends second indication information to the relay device, the second indication information being used to indicate the index of the SCS. Accordingly, the relay device receives the second indication information from the first network device.
  • the second indication information is carried in a high-layer signaling, such as an RRC message.
  • the index of the SCS may be indicated, for example, by a plurality of indication bits, such as by 3 bits to indicate the index of a maximum of 8 SCSs.
  • Table 16 below shows an example of the correspondence between the SCS index and the indication bit.
  • ⁇ 2
  • the corresponding time domain symbol length 12
  • the time slot length is equal to 0.25ms. Therefore, two different types of CPs when ⁇ is 2 can be indicated by different indication bits. It should be understood that the above setting ⁇ to 2 for ECP is only an example and should not constitute any limitation to the present application.
  • the second indication information is also used to indicate the CP type.
  • the correspondence between the SCS index and the indication bit can be further expanded as shown in Table 17 below.
  • the first network device can indicate the CP type and the SCS index through the indication bit.
  • the relay device can also determine the CP type based on the indication bit, determine the number of time domain symbols in the time slot, and then combine the SCS index to determine the length of the time domain symbol and/or the length of the time slot used to forward the received signal, that is, it can accurately parse the time information.
  • Table 15 may also be transformed into a correspondence between SCS and time domain symbol length
  • Table 16 may also be transformed into a correspondence between an indication bit and SCS, or a correspondence between an indication bit and a time slot length and/or a time domain symbol length, etc.
  • the present application includes but is not limited to this.
  • the SCS used by the relay device to forward the received signal through the forwarding module comes from an SCS set (SCS set), and the SCS set corresponds to the frequency range (FR) of the carrier.
  • SCS set SCS set
  • FR frequency range
  • different FRs may correspond to different SCS sets
  • each FR may correspond to an SCS set
  • each SCS set includes one or more SCSs.
  • Table 18 below shows an example of the correspondence between FR and SCS set.
  • FR1, FR2-1, and FR2-2 in Table 18 represent three different frequency bands, and the SCS set corresponding to each frequency band may include one or more SCSs.
  • the length of the time slot used by the relay device to forward the received signal may correspond to one of the SCSs.
  • the SCS corresponding to the length of the time slot used by the relay device to forward the received signal is from one of the SCS sets, and for the convenience of distinction and description, it is recorded as the target SCS set, for example.
  • the relay device can determine the FR in advance, the target SCS set can be determined according to the correspondence between the FR and the SCS set. Therefore, when the second indication information is used to indicate the index of the SCS, it can specifically indicate the index of the SCS in the SCS set.
  • the index of the SCS can be indicated by a small number of indication bits, such as using 2 bits to indicate a maximum of 4 SCSs.
  • Table 19 below shows an example of the correspondence between the SCS index and the indication bit.
  • Table 19 takes the SCS set corresponding to FR2-2 as an example to show the correspondence between the indication bit and the SCS. It can be understood that the correspondence between the indication bit and the SCS in Table 19 may also change corresponding to different FRs.
  • the first network device and the relay device can pre-save the correspondence between the indication bit and the SCS for each FR, and based on the same correspondence, the first network device can determine the indication bit corresponding to the target SCS, and the relay device can determine the corresponding SCS according to the FR and the received indication bit.
  • the relay device can determine the length of the time slot and/or time domain symbol used when forwarding the received signal, and then can accurately obtain and configure the time interval in which the beam is effective in combination with the aforementioned beam information and time information. In this way, the relay device can respond to the scheduling of the first network device and accurately use the corresponding beam to receive and forward signals on different time domain symbols, thereby realizing the dynamic scheduling of the relay device by the first network device, which is conducive to the relay device better assisting the transmission between the first network device and the terminal device and improving the transmission performance.
  • the first network device and the relay device include hardware structures and/or software modules corresponding to the execution of each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.
  • FIG. 26 and FIG. 27 are schematic block diagrams of possible communication devices provided by embodiments of the present application. These communication devices may be used In order to realize the function of the relay device or the first network device in the above method embodiment, the beneficial effects of the above method embodiment can also be realized.
  • the communication device can be the relay device 120 or the access network device 110 as shown in FIG. 1, or the relay device 300 as shown in FIG. 3 or the access network device 200 as shown in FIG. 2, or a module (such as a chip) applied to the relay device or the access network device.
  • the communication device 1000 includes a transceiver unit 1100 and a processing unit 1200 .
  • the communication device 1000 is used to implement the function of the relay device in the method embodiment shown in FIG. 5 above.
  • the transceiver unit 1100 is used to receive beam information and time information; the transceiver unit 1100 is also used to forward the received signal based on the received beam information and time information.
  • the device may also include a processing unit 1200, which may be used to determine the symbol at which the beam is effective based on the received beam information and time information, and may also be used to process the received signal, such as amplifying it.
  • the present application includes but is not limited to this.
  • transceiver unit 1100 and the processing unit 1200 can be directly obtained by referring to the relevant description in the method embodiment shown in FIG5 , and will not be repeated here.
  • Another possible design is that the communication device 1000 is used to implement the function of the first network device in the method embodiment shown in FIG. 5 above.
  • the processing unit 1100 is used to generate beam information and time information
  • the transceiver unit 1200 is used to send the beam information and time information.
  • the transceiver unit 1200 can be used to receive a forwarding signal from a relay device.
  • processing unit 1100 and the transceiver unit 1200 can be directly obtained by referring to the relevant description in the method embodiment shown in FIG5 , and will not be repeated here.
  • the communication device 1000 may include a sending unit but not a receiving unit.
  • the communication device 1000 may include a receiving unit but not a sending unit. Specifically, it may depend on whether the above solution executed by the communication device 1000 includes a sending action and a receiving action.
  • the communication device 3000 includes a processor 3100.
  • the processor 3100 can be used to execute computer programs or instructions in the memory to implement the steps performed by the relay device or the first network device in the method embodiment shown in Fig. 5.
  • the device 3000 further includes a communication interface 3200.
  • the processor 3100 and the communication interface 3200 are coupled to each other. It can be understood that the communication interface 3200 can be a transceiver or an input-output interface.
  • the communication device 3000 may further include a memory 3300 for storing instructions executed by the processor 3100 or storing input data required for the processor 3100 to run instructions or storing data generated after the processor 3100 runs instructions.
  • the processor 3100 is used to execute the functions of the above processing unit
  • the communication interface 3200 is used to execute the functions of the above receiving unit and/or sending unit. Whether the communication interface 3200 is used for sending or receiving can be determined by whether the communication device 3000 is used for performing a sending action or a receiving action in the scheme executed.
  • the chip implements the function of the relay device in the above method embodiment.
  • the chip of the relay device receives a signal from other modules (such as a radio frequency module or an antenna) in the relay device, and the signal may be sent by the first network device to the relay device; or the chip of the relay device sends a signal to other modules (such as a radio frequency module or an antenna) in the relay device, and the signal may be sent by the relay device to the first network device.
  • the chip implements the function of the first network device in the above method embodiment.
  • the chip of the first network device receives a signal from other modules (such as a radio frequency module or an antenna) in the first network device, and the signal may be sent by the relay device to the first network device; or, the chip of the first network device sends a signal to other modules (such as a radio frequency module or an antenna) in the first network device, and the signal may be sent by the first network device to the relay device.
  • the communication interface 3200 can be a transceiver, which can specifically include a transmitter and a receiver, the transmitter is used to send signals, and the receiver is used to receive signals.
  • the communication interface 3200 can be an input-output circuit, wherein the input circuit can be used for receiving, and the output interface can be used for sending.
  • FIG28 is a schematic diagram of the structure of a base station.
  • the base station 1000 shown in FIG28 can be applied to the system shown in FIG1 to perform the function of the first network device in the above method embodiment, or can be regarded as an example of the first network device shown in FIG2.
  • the base station 4000 may include one or more radio frequency units, such as a remote radio unit (RRU) 4100 and one or more baseband units (BBU) (also referred to as distributed units (DU)) 4200.
  • RRU remote radio unit
  • BBU baseband units
  • DU distributed units
  • the RRU 4100 may be referred to as a transceiver unit, corresponding to the transceiver unit 1100 in FIG. 26 .
  • the transceiver unit 4100 may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 4101 and a radio frequency unit 4102.
  • the transceiver unit 4100 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit).
  • the RRU 4100 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending indication information to a relay device, sending signals, etc.
  • the BBU4200 is mainly used for baseband processing, controlling the base station, etc.
  • the RRU4100 and the BBU4200 may be physically arranged together or physically separated, that is, a distributed base station.
  • the BBU 4200 is the control center of the base station, which may also be called a processing unit, and may correspond to the processing unit 1200 in FIG. 26 , and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, etc.
  • the BBU processing unit
  • the BBU may be used to control the base station to execute the operation flow of the first network device in the above method embodiment, such as configuration signals, etc.
  • the BBU4200 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network of a single access standard (such as an LTE network), or may respectively support wireless access networks of different access standards (such as an LTE network, a 5G network, or other networks).
  • the BBU4200 also includes a memory 4201 and a processor 4202.
  • the memory 4201 is used to store necessary instructions and data.
  • the processor 4202 is used to control the base station to perform necessary actions, for example, to control the base station to execute the operation process of the first network device in the above method embodiment.
  • the memory 4201 and the processor 4202 can serve one or more single boards. In other words, a memory and a processor may be separately set on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be set on each single board.
  • the base station 4000 shown in FIG28 can implement various processes involving the first network device in the method embodiment shown in FIG5.
  • the operations and/or functions of each module in the base station 4000 are respectively to implement the corresponding processes in the above method embodiment.
  • the BBU4200 can be used to perform the actions implemented by the first network device in the previous method embodiment, and the RRU4100 can be used to perform the actions of the first network device sending to or receiving from the relay device in the previous method embodiment. Please refer to the description in the previous method embodiment for details, which will not be repeated here.
  • processors in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the nonvolatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchlink DRAM
  • DR RAM direct rambus RAM
  • the present application also provides a communication system, which includes the aforementioned first network device and relay device.
  • the communication system also includes a second network device.
  • the communication system also includes a terminal device.
  • the present application also provides a computer program product, which includes: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute the method executed by the relay device in the embodiment shown in FIG. 5 or the method executed by the first network device.
  • a computer program also referred to as code, or instruction
  • the present application also provides a computer-readable storage medium, which stores a computer program (also referred to as code or instruction).
  • a computer program also referred to as code or instruction.
  • the computer executes the relay device in the embodiment shown in FIG.
  • the method executed or the method executed by the first network device.
  • unit may be used to represent a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the device embodiments described above are only schematic, for example, the division of the unit is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it can 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 (programs) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a digital video disc (DVD)
  • DVD digital video disc
  • SSD solid state disk
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present application.
  • the aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

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Abstract

La présente demande concerne un procédé de transfert de signal et un appareil associé, destinés à être utilisés dans la mise en œuvre d'une planification dynamique d'un dispositif de relais par un dispositif de réseau. L'invention comprend les étapes suivantes : un dispositif de réseau envoie des informations de faisceau et des informations temporelles à un dispositif relais, les informations de faisceau comprenant M champs d'indication de faisceau de liaison backhaul utilisés pour indiquer des faisceaux de liaison backhaul et N champs d'indication de faisceau de liaison d'accès utilisés pour indiquer des faisceaux de liaison d'accès, et les informations temporelles étant utilisées pour déterminer des symboles de domaine temporel de multiplexage par répartition orthogonale de la fréquence pour des faisceaux effectifs indiqués par les informations de faisceau ; sur la base des informations de faisceau et des informations temporelles, le dispositif relais détermine les symboles de domaine temporel pour les faisceaux effectifs. De cette manière, des signaux peuvent être reçus et transmis au moyen de faisceaux programmés par le dispositif de réseau dans différents symboles de domaine temporel, ce qui permet d'aider la transmission entre le dispositif de réseau et un dispositif terminal et d'améliorer les performances de transmission.
PCT/CN2023/120884 2022-09-30 2023-09-22 Procédé de transfert de signal et appareil associé WO2024067426A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200366363A1 (en) * 2019-05-16 2020-11-19 Qualcomm Incorporated Joint beam management for backhaul links and access links
WO2022082774A1 (fr) * 2020-10-23 2022-04-28 华为技术有限公司 Procédé de gestion de faisceau et dispositif de communication
CN116097699A (zh) * 2022-09-30 2023-05-09 北京小米移动软件有限公司 波束应用方法、装置、存储介质及芯片
CN116471646A (zh) * 2022-01-11 2023-07-21 北京三星通信技术研究有限公司 由通信系统中用于转发信息的网络设备执行的方法及设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200366363A1 (en) * 2019-05-16 2020-11-19 Qualcomm Incorporated Joint beam management for backhaul links and access links
WO2022082774A1 (fr) * 2020-10-23 2022-04-28 华为技术有限公司 Procédé de gestion de faisceau et dispositif de communication
CN116471646A (zh) * 2022-01-11 2023-07-21 北京三星通信技术研究有限公司 由通信系统中用于转发信息的网络设备执行的方法及设备
CN116097699A (zh) * 2022-09-30 2023-05-09 北京小米移动软件有限公司 波束应用方法、装置、存储介质及芯片

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