Relay configuration method, and related apparatus

Abstract

Provided are a relay configuration method, and a related apparatus. The method comprises: receiving first indication information from a network device, wherein the first indication information is used for determining a band of a forwarding unit of a relay; and performing signal forwarding on the band. When a forwarding unit and a control unit of a relay operate in different bands, the relay can determine the band of the forwarding unit on the basis of first indication information from a network device, and then signal forwarding is performed on the band, thus facilitating an improvement in the flexibility of resource configuration, for example, the the flexible configuration of the operating band of the forwarding unit of the relay is facilitated.

Description

A relay configuration method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 25, 2023, with application number 202311800807.9 and application name “A relay configuration method and related device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to a relay configuration method and related devices. Background Art

[0003] The network device and the terminal may not be able to communicate directly due to high path loss. One solution is to use a network controlled repeater (NCR) (hereinafter referred to as relay) to assist the communication between the network device and the terminal. The relay mainly includes a mobile terminal (MT) unit (also called a control unit) and a forwarding (Fwd) unit. Among them, the control unit is used to interact with the network device for messages, for example, beam control, amplification factor (or output power) control, uplink forwarding direction control, downlink signal forwarding direction control, on-off control, etc. are all interactions between the control unit and the network device. The forwarding unit is used to forward signals. For example, the forwarding unit does not need to demodulate the signal and can directly amplify and forward it.

[0004] Currently, the control unit and the forwarding unit share the same frequency band, that is, the frequency bands of the control unit and the forwarding unit are the same. For example, the frequency bands of the control unit and the forwarding unit may be preset when the relay leaves the factory. Therefore, the configuration of the frequency band of the forwarding unit is not flexible enough. Summary of the Invention

[0005] The present application provides a relay configuration method and related devices to improve the configuration flexibility of a forwarding unit.

[0006] In the first aspect, the present application provides a relay configuration method, which can be executed by a communication device. The communication device can be a relay, or a component configured in the relay (such as a chip, chip system, etc.), or it can also be a logic module or software that can realize all or part of the relay function. The present application does not limit this.

[0007] Exemplarily, the method includes: receiving first indication information from a network device, where the first indication information is used to determine a frequency band of a forwarding unit of a relay; and forwarding signals on the above frequency band.

[0008] The frequency band of the forwarding unit can also be referred to as the operating frequency band of the forwarding unit, or the frequency band used for signal forwarding. In other words, the forwarding unit operates on this frequency band. Optionally, the above-mentioned frequency band can be replaced by other terms representing frequency domain units, such as frequency band or component carrier (CC), and this application does not limit this.

[0009] In addition, it should be noted that, in a relay, a control unit may correspond to one or more forwarding units. In this application, the frequency band of one forwarding unit among one or more forwarding units is determined as an example for explanation.

[0010] In the above technical solution, the relay can determine the frequency band of the forwarding unit based on the first indication information from the network device, and then forward the signal on the frequency band, which is conducive to improving the flexibility of resource configuration, for example, it is conducive to flexibly configuring the working frequency band of the forwarding unit of the relay.

[0011] With reference to the first aspect, in some possible implementations of the first aspect, the first indication information is used to indicate a frequency band of the forwarding unit.

[0012] One possible design is that the first indication information includes an index of the frequency band of the forwarding unit.

[0013] The correspondence between one or more indexes of the forwarding unit and one or more frequency bands can be predefined or preconfigured, with each index corresponding to a frequency band. Exemplarily, the correspondence between one or more indexes of the forwarding unit and one or more frequency bands is preconfigured, and the method further includes: the relay receiving first configuration information from operations administration and maintenance (OAM), the first configuration information being used to configure the correspondence between one or more indexes of the forwarding unit and one or more frequency bands, with each index corresponding to a frequency band. In other words, OAM can configure the correspondence between one or more indexes of the forwarding unit and one or more frequency bands for the relay.

[0014] Another possible design is that the first indication information includes the starting frequency and the ending frequency of the frequency band of the forwarding unit, or the first indication information includes the center frequency and the bandwidth of the frequency band of the forwarding unit.

[0015] That is, the network device can directly indicate to the relay the starting frequency and the ending frequency, or the center frequency and the bandwidth of the frequency band of the forwarding unit.

[0016] In combination with the first aspect, in some possible implementations of the first aspect, the first indication information is carried in a radio resource control (RRC) message, and the RRC message is used to configure one or more forwarding resource sets, each forwarding resource set including one or more forwarding resources, wherein each forwarding resource set corresponds to a frequency band of a forwarding unit, or each forwarding resource corresponds to a frequency band of a forwarding unit, or one or more forwarding resource sets correspond to a frequency band of a forwarding unit.

[0017] Each forwarding resource set corresponds to a frequency band of a forwarding unit, which can be understood as one or more forwarding resources in the forwarding resource set corresponding to the same frequency band of the forwarding unit. Each forwarding resource corresponds to a frequency band of a forwarding unit, which can be understood as the frequency bands of the forwarding unit corresponding to different forwarding resources can be the same or different, and one forwarding resource corresponds to the frequency band of one forwarding unit. One or more forwarding resource sets correspond to a frequency band of a forwarding unit, which can be understood as all forwarding resources corresponding to a frequency band of the forwarding unit, where all forwarding resources include, for example, periodic forwarding resources, semi-persistent forwarding resources, and aperiodic forwarding resources.

[0018] When the forwarding resource is a semi-persistent forwarding resource, a frequency band of the forwarding unit may be activated / deactivated via a media access control (MAC) control element (CE) (hereinafter, activation of the frequency band of the forwarding unit is used as an example). In this case, the method further includes: receiving a MAC CE from a network device, where the MAC CE is used to activate the frequency band of the forwarding unit.

[0019] One possible design is that the logical channel identifier (LCID) in the above-mentioned MAC CE is used to identify the frequency band used by the above-mentioned MAC CE to activate / deactivate the forwarding unit, wherein the above-mentioned LCID may be an extended LCID (eLCID). In other words, the above-mentioned MAC CE is an NCR access link band indication MAC CE, and the NCR access link band indication MAC CE is identified by a MAC subheader with an eLCID. It can be seen that the above-mentioned MAC CE may be an extended MAC CE, or in other words, the above-mentioned MAC CE is a predefined MAC CE specifically used to activate the frequency band of the forwarding unit.

[0020] Another possible design is that the MAC CE includes a first field and a second field, wherein the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate the access side beam corresponding to each forwarding resource in a forwarding resource set, where the forwarding resource set includes at least one forwarding resource. In other words, an existing MAC CE can be reused, such as a MAC CE used to activate the access side beam corresponding to each forwarding resource in a forwarding resource set. That is, the MAC CE can be used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set, and can also be used to activate the frequency band of the forwarding unit.

[0021] When the forwarding resource is a non-periodic forwarding resource, the frequency band of the forwarding unit can be activated (or indicated) by downlink control information (DCI). In this case, the method further includes: receiving DCI from a network device, where the DCI is used to activate the frequency band of the forwarding unit.

[0022] Among them, the above-mentioned DCI can be a predefined DCI (such as DCI 2_9) for activating the frequency band of the forwarding unit, or it can be a reused existing DCI (such as DCI 2_8), which is not limited in this application.

[0023] Optionally, the length (or bit width) of the field in the DCI used to indicate the frequency band of the forwarding unit is preconfigured, or determined according to the number of frequency bands of the forwarding unit configured in the RRC message.

[0024] In combination with the first aspect, in some possible implementations of the first aspect, before receiving the first indication information, the above method also includes: sending capability information to the network device, where the capability information is used to indicate one or more of the following: whether the relay supports the control unit and the forwarding unit to operate in different frequency bands, whether the forwarding unit of the relay supports operation in multiple adjacent frequency bands, the set of frequency bands supported by the forwarding unit, or the number of frequency bands included in each frequency band set.

[0025] The relay may report the capability information to the network device, so that the network device can configure the frequency band of the forwarding unit for the relay based on the capability information of the relay.

[0026] In combination with the first aspect, in some possible implementations of the first aspect, the first indication information indicates the frequency band of the control unit of the relay; and the method further includes: determining the frequency band of the forwarding unit based on the frequency band of the control unit.

[0027] That is, the relay can determine the frequency band of the forwarding unit according to the frequency band of the control unit indicated by the network device.

[0028] It can be understood that the above-mentioned first indication information indicates the frequency band of the control unit of the relay. In this way, the relay can also determine the frequency band of the control unit (or the working frequency band of the control unit). In other words, the above-mentioned first indication information is also used to determine the frequency band of the control unit of the relay.

[0029] One possible design is that the first indication information includes an index of the frequency band of the control unit. In this case, determining the frequency band of the forwarding unit based on the frequency band of the control unit includes: determining the frequency band of the forwarding unit based on the index of the frequency band of the control unit and a first offset and / or a first coefficient, where the first offset is an offset of the frequency band index, and the first coefficient is a coefficient by which the bandwidth of the frequency band of the control unit is increased or decreased.

[0030] Optionally, the first offset and / or first coefficient are predefined or configured by the network device, which is not limited in this application.

[0031] In the above design, a frequency band of the control unit may correspond to an index, and the correspondence between one or more indexes of the control unit and one or more frequency bands may be predefined or preconfigured. Exemplarily, the correspondence between one or more indexes of the control unit and one or more frequency bands is preconfigured, and the above method further includes: the relay receiving second configuration information from the OAM, the second configuration information being used to configure the correspondence between one or more indexes of the control unit and one or more frequency bands, where each index corresponds to one frequency band.

[0032] Another possible design is that the first indication information includes the starting frequency and the ending frequency of the frequency band of the control unit, or the first indication information includes the center frequency and the bandwidth of the frequency band of the control unit. In this case, the above-mentioned determination of the frequency band of the forwarding unit based on the frequency band of the control unit includes: determining the frequency band of the forwarding unit based on the center frequency of the frequency band of the control unit and the second offset and / or the first coefficient, wherein the second offset is the offset of the center frequency of the frequency band, and the first coefficient is the coefficient by which the bandwidth of the frequency band of the control unit is increased or decreased.

[0033] It should be noted that the first offset is the offset of the frequency band index, and the second offset is the offset of the center frequency of the frequency band. The first offset and the second offset have different meanings. For example, the frequency band index can be 0, 1, 2, 3, Q-1, and the first offset can be 1, 2, or k, where Q and k are integers; the center frequency of the frequency band can be 870 megahertz (MHz), 880 MHz, 890 MHz, etc., and the second offset can be 10 MHz, 20 MHz, etc.

[0034] Optionally, the second offset and / or first coefficient are predefined or configured by the network device, which is not limited in this application.

[0035] On the second aspect, the present application provides a relay configuration method, which can be executed by a communication device. The communication device can be a network device, or a component configured in the network device (such as a chip, chip system, etc.), or it can also be a logic module or software that can realize all or part of the functions of the network device. The present application does not limit this.

[0036] Exemplarily, the method includes: generating first indication information, where the first indication information is used to determine a frequency band of a forwarding unit of a relay; and sending the first indication information to the relay.

[0037] In the above technical solution, the network device can send a first indication information for determining the frequency band of the forwarding unit to the relay, so that the relay can determine the frequency band of the forwarding unit based on the above first indication information, thereby facilitating the improvement of the flexibility of resource configuration, for example, facilitating the flexible configuration of the working frequency band of the forwarding unit of the relay.

[0038] In combination with the second aspect, in some possible implementations of the second aspect, the first indication information is used to indicate a frequency band of the forwarding unit.

[0039] One possible design is that the first indication information includes an index of the frequency band of the forwarding unit. One frequency band of the forwarding unit corresponds to one index, and the correspondence between one or more indexes of the forwarding unit and one or more frequency bands can be predefined or preconfigured. Exemplarily, the correspondence between one or more indexes of the forwarding unit and one or more frequency bands is preconfigured, and the method further includes: the network device receives first configuration information from OAM, where the first configuration information is used to configure the correspondence between one or more indexes of the forwarding unit and one or more frequency bands, where each index corresponds to one frequency band.

[0040] Another possible design is that the first indication information includes the starting frequency and the ending frequency of the frequency band of the forwarding unit, or the first indication information includes the center frequency and the bandwidth of the frequency band of the forwarding unit.

[0041] In combination with the second aspect, in some possible implementations of the second aspect, the first indication information is carried in an RRC message, which is used to configure one or more forwarding resource sets, each forwarding resource set including one or more forwarding resources, wherein each forwarding resource set corresponds to a frequency band of the forwarding unit, or each forwarding resource corresponds to a frequency band of the forwarding unit, or one or more forwarding resource sets correspond to a frequency band of the forwarding unit.

[0042] When the forwarding resource is a semi-persistent forwarding resource, the network device can activate / deactivate the frequency band of the forwarding unit through a MAC CE. In this case, the method further includes: sending a MAC CE to the relay, the MAC CE being used to activate the frequency band of the forwarding unit.

[0043] One possible design is that the LCID in the MAC CE is used to identify the frequency band used by the MAC CE to activate the forwarding unit. Alternatively, the MAC CE is an NCR access link frequency band indication MAC CE, which is identified by a MAC subheader carrying an eLCID. It can be seen that the MAC CE can be an extended MAC CE, or in other words, the MAC CE is a predefined MAC CE specifically used to activate the frequency band of the forwarding unit.

[0044] Another possible design is that the MAC CE includes a first field and a second field, wherein the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate the access side beam corresponding to each forwarding resource in a forwarding resource set, where the forwarding resource set includes at least one forwarding resource. In other words, an existing MAC CE can be reused, such as a MAC CE used to activate the access side beam corresponding to each forwarding resource in a forwarding resource set. That is, the MAC CE can be used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set, and can also be used to activate the frequency band of the forwarding unit.

[0045] When the forwarding resource is a non-periodic forwarding resource, the network device may activate (or indicate) the frequency band of the forwarding unit through DCI. In this case, the method further includes: sending DCI to the relay, where the DCI is used to activate the frequency band of the forwarding unit.

[0046] Among them, the above-mentioned DCI can be a predefined DCI (such as DCI 2_9) for activating the frequency band of the forwarding unit, or it can be a reused existing DCI (such as DCI 2_8), which is not limited in this application.

[0047] Optionally, the length (or bit width) of the field in the DCI used to indicate the frequency band of the forwarding unit is preconfigured, or determined according to the number of frequency bands of the forwarding unit configured in the RRC message.

[0048] In combination with the second aspect, in some possible implementations of the second aspect, before sending the first indication information, the above method also includes: receiving capability information from the relay, the capability information being used to indicate one or more of the following: whether the relay supports the control unit and the forwarding unit to operate in different frequency bands, whether the forwarding unit of the relay supports operation in multiple adjacent frequency bands, the set of frequency bands supported by the forwarding unit, or the number of frequency bands included in each frequency band set.

[0049] The relay may report the capability information to the network device, so that the network device can configure the frequency band of the forwarding unit for the relay based on the capability information of the relay.

[0050] In combination with the second aspect, in some possible implementations of the second aspect, the first indication information indicates a frequency band of a control unit of the relay.

[0051] One possible design is that the first indication information includes the index of the frequency band of the control unit.

[0052] In the above design, a frequency band of the control unit may correspond to an index, and the correspondence between one or more indexes of the control unit and one or more frequency bands may be predefined or preconfigured. Exemplarily, the correspondence between one or more indexes of the control unit and one or more frequency bands is preconfigured, and the above method further includes: the network device receiving second configuration information from the OAM, the second configuration information being used to configure the correspondence between one or more indexes of the control unit and one or more frequency bands, where each index corresponds to one frequency band.

[0053] Another possible design is that the first indication information includes the starting frequency point and the ending frequency point of the frequency band of the control unit, or the first indication information includes the center frequency point and the bandwidth of the frequency band of the control unit.

[0054] In a third aspect, the present application provides a relay configuration method, which is applied to a communication system including a relay and a network device. The method comprises: the network device generating first indication information, the first indication information being used to determine a frequency band of a forwarding unit of the relay; and the network device sending the first indication information to the relay. Accordingly, the relay receives the first indication information and forwards signals on the frequency band of the forwarding unit.

[0055] In the above technical solution, the network device can send a first indication information for determining the frequency band of the forwarding unit to the relay, so that the relay determines the frequency band of the forwarding unit based on the above first indication information, and then forwards the signal on the above frequency band, which is conducive to improving the flexibility of resource configuration, for example, it is conducive to flexibly configuring the working frequency band of the forwarding unit of the relay.

[0056] In a fourth aspect, the present application provides a communications device that can implement the method described in the first aspect and any possible implementation of the first aspect, or the method described in the second aspect and any possible implementation of the second aspect. The device includes corresponding modules for executing the above methods. The modules included in the device can be implemented in software and / or hardware.

[0057] In a fifth aspect, the present application provides a communication device, which includes a processor, and the processor can be used to execute a computer program in a memory to implement the method described in the first aspect and any possible implementation of the first aspect, or to implement the method described in the second aspect and any possible implementation of the second aspect.

[0058] Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface. The communication interface is configured to receive signals from other communication devices outside the device and transmit them to the processor, or to transmit signals from the processor to other communication devices outside the device. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0059] Optionally, the apparatus further comprises a memory, the processor being coupled to the memory. The memory is configured to store program instructions and data. The memory is coupled to the processor, and when the processor executes instructions stored in the memory, the methods described in the above aspects can be implemented.

[0060] In a sixth aspect, the present application provides a communication device, comprising a processor and a communication interface, wherein the communication interface is configured to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device, wherein the processor implements the relay configuration method described in the first aspect and any possible implementation of the first aspect through a logic circuit or by executing code instructions, or implements the relay configuration method described in the second aspect and any possible implementation of the second aspect. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0061] Optionally, the apparatus further includes a memory for storing instructions and data. The memory may be coupled to the processor, and when the processor executes the instructions stored in the memory, the relay configuration method described in the first aspect and any possible implementation of the first aspect is implemented, or the relay configuration method described in the second aspect and any possible implementation of the second aspect is implemented.

[0062] In the seventh aspect, the present application provides a communication device, including a processor and a memory, wherein the memory is used to store instructions and data. When the processor executes the instructions stored in the memory, it can implement the relay configuration method described in the first aspect and any possible implementation of the first aspect, or implement the relay configuration method described in the second aspect and any possible implementation of the second aspect.

[0063] Optionally, the device further includes a communication interface, which is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0064] In an eighth aspect, the present application provides a computer-readable storage medium, which stores a computer program or instructions. When the computer program or instructions are executed, it implements the method described in the first aspect and any possible implementation of the first aspect, or implements the method described in the second aspect and any possible implementation of the second aspect.

[0065] In the ninth aspect, the present application provides a computer program product comprising instructions, which, when executed, implement the method described in the first aspect and any possible implementation of the first aspect, or implement the method described in the second aspect and any possible implementation of the second aspect.

[0066] In the tenth aspect, the present application provides a chip system comprising at least one processor for supporting the implementation of the functions involved in the first aspect and any possible implementation of the first aspect, or for supporting the implementation of the functions involved in the second aspect and any possible implementation of the second aspect, for example, receiving or processing the data involved in the above method, etc.

[0067] In one possible design, the chip system further includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0068] The chip system can be composed of chips, or can include chips and other discrete devices.

[0069] In the eleventh aspect, the present application provides a communication system, which includes a relay and a network device, wherein the relay is used to implement the method described in the first aspect and any possible implementation method of the first aspect, and the network device is used to implement the method described in the second aspect and any possible implementation method of the second aspect.

[0070] It should be understood that the third to eleventh aspects of the present application correspond to the technical solutions of the first and second aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] FIG1 is a schematic diagram of a relay forwarding signal provided in an embodiment of the present application;

[0072] FIG2 is a schematic diagram of a base station controlling a relay forwarding signal according to an embodiment of the present application;

[0073] FIG3 is a schematic diagram of a MAC CE format provided in an embodiment of the present application;

[0074] FIG4 is another schematic diagram of a MAC CE format provided in an embodiment of the present application;

[0075] FIG5 is a schematic flow chart of a relay configuration method provided in an embodiment of the present application;

[0076] FIG6 is a schematic diagram of a control unit and a forwarding unit provided in an embodiment of the present application operating in different frequency bands;

[0077] FIG7 is a schematic diagram of multiple adjacent frequency bands provided in an embodiment of the present application;

[0078] FIG8 is another schematic diagram of a MAC CE format provided in an embodiment of the present application;

[0079] FIG9 is another schematic diagram of the MAC CE format provided in an embodiment of the present application;

[0080] FIG10 is a schematic diagram of the index of the frequency band of the forwarding unit and the corresponding frequency band according to an embodiment of the present application;

[0081] FIG11 is a schematic diagram of a format of a MAC CE for activating an index of a frequency band of a forwarding unit according to an embodiment of the present application;

[0082] FIG12 is another schematic diagram of the format of a MAC CE for activating an index of a frequency band of a forwarding unit provided in an embodiment of the present application;

[0083] FIG13 is another schematic diagram of the format of the MAC CE for activating the index of the frequency band of the forwarding unit provided in an embodiment of the present application;

[0084] FIG14 is a schematic diagram of a frequency band indication field in a DCI according to an embodiment of the present application;

[0085] FIG15 is another schematic diagram of the frequency band indication field in the DCI provided in an embodiment of the present application;

[0086] FIG16 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0087] FIG17 is another schematic block diagram of a communication device provided in an embodiment of the present application;

[0088] FIG18 is another structural diagram of a communication device provided in an embodiment of the present application;

[0089] FIG19 is another structural diagram of a communication device provided in an embodiment of the present application;

[0090] Figure 20 is a structural diagram of the relay provided in an embodiment of the present application. DETAILED DESCRIPTION

[0091] The technical solution in this application will be described below with reference to the accompanying drawings.

[0092] To facilitate understanding of the technical solution provided by this application, the following points are first explained:

[0093] First, in this application, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a device, system, product or apparatus comprising a series of modules, modules or units is not necessarily limited to those modules, modules or units explicitly listed, but may include other modules, modules or units that are not explicitly listed or are inherent to these devices, systems, products or apparatuses.

[0094] Second, in this application, indications include explicit indications (also called direct indications) and implicit indications (also called indirect indications). Specifically, explicit indication information A refers to including information A; implicit indication information A refers to indicating information A through the correspondence between information A and information B and directly indicating information B. The correspondence between information A and information B can be predefined, pre-stored, pre-burned, or pre-configured; or, it can also refer to indicating information A through information B and preset rules.

[0095] Third, in this application, information C is used to determine information D, which includes both information D being determined solely based on information C and information D being determined based on information C and other information. Furthermore, information C can also be used to determine information D indirectly, for example, when information D is determined based on information E, and information E is determined based on information C.

[0096] Fourth, in this application, "at least one" means one or more, and "more" 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, but it does not exclude the situation where it indicates that the previous and next associated objects are in an "and" relationship. The specific meaning can be understood in conjunction with the context. "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. For example, at least one of a, b, or c can mean: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, c can be single or multiple.

[0097] Fifth, in this application, prefixes such as "first" and "second" are used solely to distinguish between different items belonging to the same category and do not constrain the order, size, or quantity of the items. For example, "first configuration information" and "second configuration information" are simply different configuration information; there is no temporal, size, or priority relationship between the two.

[0098] Sixth, in this application, "sending" and "receiving" indicate the direction of signal transmission. For example, "sending information to a network device" can be understood as the destination end of the information being the network device, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from a relay" can be understood as the source end of the information being the relay, which can include direct receiving from the relay through the air interface, and also includes indirect receiving from the relay through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0099] In other words, sending and receiving can be performed between devices, for example, between a network device and a relay; or it can be performed within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wiring or interface.

[0100] Seventh, in this application, "when", "if" and "if" all mean that the device will take corresponding actions under certain objective circumstances. It does not limit the time, nor does it require that the device must make a judgment when it is implemented, nor does it mean that there are other limitations.

[0101] Eighth, in this application, words such as "example," "exemplarily," "for example," or "such as" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "example," "exemplarily," "for example," or "such as" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "example," "exemplarily," "for example," or "such as" is intended to present the relevant concepts in a concrete manner.

[0102] Ninth, in this application, pre-configuration can be understood as preset, pre-defined, defined, pre-defined, stored, pre-stored, pre-negotiated, pre-made, or preset, etc.

[0103] Tenth, the technical solutions provided in this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), sidelink (SL) communication system, universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA). The technical solutions provided in this application can also be applied to future communication systems, such as sixth generation (6G) mobile communication systems. This application is not limited to this.

[0104] Eleventh, in this application, network equipment may also be referred to as radio access network (RAN) equipment or access network equipment. The access network may be a cellular system related to the Third Generation Partnership Project (3GPP), such as a 4G or 5G mobile communication system, or a future-oriented evolution system (such as a 6G mobile communication system). The access network may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (Wi-Fi) system, etc., which is not limited in this application.

[0105] In one possible scenario, a RAN device may be a base station, an evolved nodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a Wi-Fi system. The RAN device may be a macro base station, a micro base station, an indoor station, or a wireless controller in a CRAN scenario. Optionally, the RAN device may also be a server, a wearable device, a vehicle, or an onboard device. For example, the access network device in vehicle to everything (V2X) technology may be a road side unit (RSU).

[0106] In another possible scenario, multiple RAN devices collaborate to assist the terminal in achieving wireless access, and different RAN devices respectively implement part of the functions of the base station. For example, the RAN device can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0107] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called open CU (open-CU, O-CU), DU may also be called open DU (open-DU, O-DU), CU-CP may also be called open CU-CP (open-CU-CP, O-CU-CP), CU-UP may also be called open CU-UP (open-CU-UP, O-CU-UP), and RU may also be called open RU (open-RU, O-RU). For convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0108] In order to better understand the method provided by this application, the terms involved in this application are briefly explained below.

[0109] 1. Relay: Also known as a relay device. Considering the network's ability to control the relay, relays can be divided into network-controlled relays and non-network-controlled relays. A relay forwards (or reflects) signals. A typical relay has two antenna panels: one for communicating with network equipment (called the backhaul side) and the other for communicating with terminals (called the access side). Typically, only one antenna panel receives signals, which are then amplified and forwarded (or transmitted) by the other antenna panel.

[0110] A relay primarily consists of a MT unit (also called a control unit) and a forwarding unit. The control unit interacts with network devices for tasks such as beam steering, amplification factor (or output power), uplink and downlink signal forwarding direction control, and on / off control. The forwarding unit forwards signals. For example, the forwarding unit amplifies and forwards signals directly without demodulating them.

[0111] One form of relay is an amplification and forward relay. This relay performs simple RF processing (such as amplification, demodulation, frequency shifting, and noise reduction) on the signal before forwarding it. Amplification and forward relays typically have multiple antenna panels, some of which receive signals and others forward (or transmit). Each antenna panel can consist of multiple antennas, and beams can be formed on a single panel to achieve better relay transmission performance.

[0112] Considering the beam capability of the access side, forwarding is further divided into single-beam forwarding and multi-beam forwarding. If the relay access side has multiple beam capabilities, the relay forwarding signal needs to align the beam at the terminal to achieve better transmission performance. Considering the networking form, forwarding is further divided into single-hop forwarding and multi-hop forwarding.

[0113] The amplification circuits in a relay introduce noise into the forwarded signal. When this noise is transmitted to the receiver, it interferes with the signal. If the relay amplifies the signal too much, this can increase the output power of the forwarded signal, potentially causing interference. Furthermore, it can cause the relay's power amplifier to enter saturation, distorting the forwarded signal and preventing the receiver from correctly demodulating it. Currently, mitigating interference primarily involves managing the relay's amplification and forwarding functionality. This involves configuring the relay's amplification gain (or output power) and performing on / off control (also known as on / off control, which controls whether the relay turns amplification and forwarding on or off).

[0114] Another form of relay is a reflector relay. Reflector relays typically use specialized reflective or transmissive antennas to directly reflect or transmit signals (with some signal attenuation during reflection or transmission). A reflector relay can generally be thought of as a single antenna panel, with each antenna element both receiving and reflecting (or transmitting) signals.

[0115] It should be noted that in this application, amplification and forwarding, reflection and forwarding, and transmission and forwarding can be collectively referred to as "forwarding".

[0116] The following describes in detail the process of relaying and forwarding signals in different forms with reference to FIG1 .

[0117] Figure 1 is a schematic diagram of relay forwarding signals provided by an embodiment of the present application. Figure 1 a) shows the process of single-hop forwarding, Figure 1 b) shows the process of multi-hop forwarding, and Figure 1 c) shows the process of communication between a reflective surface-assisted network device and a terminal.

[0118] As shown in Figure 1 (a), a relay is included between the network device and the terminal. This relay facilitates communication between the network device and the terminal, which can be called single-hop forwarding. The relay can directly amplify the received signal before forwarding it. For example, the relay can receive a signal from the network device, amplify it, and forward the amplified signal to the terminal to ensure normal communication between the network device and the terminal. Another example is that the relay can receive a signal from the terminal, amplify it, and forward the amplified signal to the network device, further ensuring communication between the network device and the terminal.

[0119] As shown in b) of Figure 1, there are multiple relays between the network device and the terminal (two are used as an example in the figure), and the two relays assist in the communication between the network device and the terminal. For example, relay 1 can receive a signal from the network device, amplify it, and forward the amplified signal to relay 2. Relay 2 can receive a signal from relay 1, amplify it, and forward the amplified signal to the terminal. For another example, relay 2 can receive a signal from the terminal, amplify it, and forward the amplified signal to relay 1. Relay 1 can receive a signal from relay 2, amplify it, and forward the amplified signal to the network device. The above process can be called multi-hop forwarding.

[0120] Optionally, the access side of a relay can have one or more beam capabilities. For example, the access side of the relay in Figure 1 a) has a single beam capability. For another example, the access side of relay 2 in Figure 1 b) has multiple beam capabilities. In this case, when relay 2 forwards signals, it needs to align the access side beam with the terminal.

[0121] As shown in Figure 1 (c), a reflective relay directly reflects signals through a reflective surface to facilitate communication between a network device and a terminal. For example, the reflective relay can reflect signals from a network device to a terminal through a reflective surface. For another example, the reflective relay can reflect signals from a terminal to a network device through a reflective surface.

[0122] 2. Amplification gain: It can correspond to power control. For example, the received signal power is P R (unit: decibel milliwatt (dBm)), the amplification gain is G (unit: decibel (dB)), then the output power (i.e., the transmission power) is P T =G+P R(Unit: dBm) In a communication system involving a reflecting surface, the amplification gain can be converted to reflection loss.

[0123] 3. On-off control: Also known as switch management or on-off control, this refers to controlling the relay to enable or disable amplification and forwarding. On-off control can be categorized into uplink on-off control, downlink on-off control, forwarding on, and forwarding off.

[0124] 4. Forwarding Resource: This parameter is used to configure the transmission attributes of a relay forwarding signal. For example, it includes at least one of the following parameters: time resource, access link beam, backhaul link beam, amplification gain, or reflection configuration matrix (for a reflection surface). Each forwarding resource corresponds to a forwarding resource index (or simply forwarding resource index), which identifies the forwarding resource.

[0125] 5. Forwarding Resource Set: A forwarding resource set includes one or more forwarding resources. That is, a forwarding resource set corresponds to one or more parameter lists (or patterns). Each forwarding resource includes at least one of the following parameters: time resource, access link beam, backhaul link beam, amplification gain, or reflection configuration matrix (for a reflection surface). A forwarding resource set corresponds to a forwarding resource set index (or simply forwarding resource set index), which is used to identify the forwarding resource set.

[0126] In one example, a forwarding resource set corresponds to multiple forwarding resource indexes, that is, a forwarding resource set includes multiple forwarding resources, and each forwarding resource corresponds to a forwarding resource index. In another example, a forwarding resource set corresponds to multiple time resources, that is, a forwarding resource set includes multiple time resources. In another example, a forwarding resource set corresponds to multiple time resource lists (or patterns), each time resource list corresponds to multiple time resources, that is, a forwarding resource set includes multiple time resource lists, and each time resource list includes multiple time resources. In another example, a forwarding resource set corresponds to multiple access link beams, that is, a forwarding resource set includes multiple access link beams. In another example, a forwarding resource set corresponds to multiple access link beam lists (or patterns), each access link beam list corresponds to multiple access link beams, that is, a forwarding resource set includes multiple access link beam lists, and each access link list includes multiple access link beams.

[0127] It should be noted that the forwarding resource can be referred to as a resource, and the forwarding resource set can be referred to as a resource set.

[0128] 6. Component Carrier (CC): Each carrier participating in carrier aggregation is called a CC. Among all component carriers, the one that carries signaling and manages other component carriers is called a primary component carrier (PCC). The cell corresponding to the primary carrier is called a primary cell (Pcell). Other component carriers are called secondary component carriers (SCCs), and the cells corresponding to secondary carriers are called secondary cells (Scells).

[0129] 7. OAM: Based on the actual needs of carrier network operations, network management tasks are typically divided into three categories: operations, administration, and maintenance, referred to as OAM. Operations primarily involve analysis, forecasting, planning, and configuration of daily network and service operations; maintenance primarily involves day-to-day operational activities such as testing and fault management of the network and its services. OAM monitors network operational status, optimizes network connectivity and performance, improves network stability, and reduces maintenance costs.

[0130] 8. Periodic resources, semi-persistent (SP) resources, and aperiodic resources: Periodic resources (also called semi-static resources) are configured through high-level signaling (such as RRC) or occur by default, that is, they are effective periodically.

[0131] Semi-persistent resources are configured via higher-layer signaling. Initially, they are inactive (or unavailable). They must be activated before use and periodically become active after activation. They can be deactivated when no longer needed. For example, activation / deactivation can be performed via MAC CE and / or DCI. It should be understood that the following description uses activation via MAC CE as an example. Furthermore, deactivation via MAC CE is similar to activation via MAC CE, so activation via MAC CE will be used as an example.

[0132] Aperiodic resources are configured via higher-layer signaling and require activation (or indication) via signaling before each use. Activation is effective only once, for example, via DCI.

[0133] In this application, forwarding resources can be divided into periodic forwarding resources, semi-persistent forwarding resources, and aperiodic forwarding resources. Among them, periodic forwarding resources can be configured through high-layer signaling; semi-persistent forwarding resources can be configured through high-layer signaling and activated / deactivated through MAC CE and / or DCI; aperiodic forwarding resources can be configured through high-layer signaling and activated through DCI.

[0134] FIG2 is a schematic diagram of a base station controlling a relay forwarding signal according to an embodiment of the present application. The following describes in detail the process of a base station controlling a relay forwarding signal in conjunction with FIG2. The base station is an example of a network device and does not constitute any limitation to the present application.

[0135] In step 210, the base station sends an RRC message to the relay, where the RRC message is used to configure forwarding resources.

[0136] Among them, the forwarding resources include, for example, at least one of the following parameters: signal forwarding direction, signal forwarding time (such as time slot, orthogonal frequency division multiplexing (OFDM) symbol), access link beam of forwarding signal, return link beam of forwarding signal, signal amplification gain (or signal forwarding power), forwarding signal type, or forwarding signal priority.

[0137] Optionally, the forwarding resource may be of a periodic, semi-persistent, or aperiodic type. When the forwarding resource is a periodic forwarding resource, the forwarding resource is periodically effective. When the forwarding resource is a semi-persistent forwarding resource, the base station executes step 211. When the forwarding resource is an aperiodic forwarding resource, the base station executes step 212.

[0138] In step 211, the base station sends a MAC CE to the relay, where the MAC CE is used to activate the forwarding resources. Correspondingly, the relay receives the MAC CE.

[0139] For example, the above-mentioned MAC CE is used to activate the access side beam corresponding to the above-mentioned forwarding resources.

[0140] In step 212, the base station sends a DCI to the relay, where the DCI is used to activate the forwarding resource. Correspondingly, the relay receives the DCI.

[0141] For example, the above-mentioned DCI is used to activate the access side beam corresponding to the above-mentioned forwarding resources.

[0142] In step 220, the base station sends a downlink signal, and the relay forwards the downlink signal.

[0143] The base station sends a downlink signal, the relay receives the downlink signal from the base station, and forwards the downlink signal based on the configured forwarding resources, or in other words, forwards the downlink signal on the configured forwarding resources.

[0144] In step 230, the terminal sends an uplink signal, and the relay forwards the uplink signal.

[0145] The terminal sends an uplink signal, the relay receives the uplink signal from the terminal, and forwards the uplink signal based on the configured forwarding resources, or in other words, forwards the uplink signal on the configured forwarding resources.

[0146] The signaling for configuring forwarding resources will be described in detail below with reference to Tables 1 to 3. Table 1 shows a possible form of configuring periodic forwarding resources in the standard.

[0147] Table 1

[0148] "SEQUENCE" indicates a sequence data type, and "INTEGER" indicates an integer data type. "Need N," "Need M," and "Need R" refer to optional fields. For details, refer to the relevant provisions in 3GPP technical specification (TS) 38.331 and are not detailed here.

[0149] As can be seen from Table 1, for periodic forwarding resources, the relay access side beam is configured in sequence from "NCR-PeriodicFwdResourceSet-r18→NCR-PeriodicFwdResource-r18→beamIndex-r18". The relay periodically forwards each forwarding resource at the corresponding time according to "periodicTimeRsrc-r18".

[0150] Table 2 shows a possible configuration of semi-persistent forwarding resources in the standard.

[0151] Table 2

[0152] As shown in Table 2, for semi-persistent forwarding resources, the relay access side beams are configured in the order "NCR-SemiPersistentFwdResourceSet-r18 → NCR-SemiPersistentFwdResource-r18 → beamIndex-r18" via RRC messages. Furthermore, network devices must activate / deactivate the forwarding resource set through MAC CE and dynamically refresh the beams configured in the RRC messages.

[0153] FIG3 is a schematic diagram of the MAC CE format provided in an embodiment of the present application.

[0154] As shown in Figure 3, the resource set identifier (resource set ID) can be, for example, the index of a semi-continuous forwarding resource set; the A / D field is used to identify whether the MAC CE is used to activate the beam in the forwarding resource set. For example, the A / D field value is 1, which indicates that the MAC CE is used to activate the beam in the forwarding resource set. The A / D field value is 0, which indicates that the MAC CE is used to deactivate the beam in the forwarding resource set. The C field is used to identify whether there is a beam index field. For example, the C field value is 1, which indicates that there is a beam index field. Bytes 2 to byte N+1 are used to indicate the index of the beam corresponding to each forwarding resource in the forwarding resource set. The first forwarding resource in the forwarding resource set corresponds to beam index ID0, the second forwarding resource in the forwarding resource set corresponds to beam index ID1, and the Nth forwarding resource in the forwarding resource set corresponds to beam index ID N-1 . Wherein, N is the number of forwarding resources in the forwarding resource set, and N is an integer greater than or equal to 1.

[0155] Table 3 shows a possible form of configuration of aperiodic forwarding resources in the standard.

[0156] Table 3

[0157] As can be seen from Table 3, for aperiodic forwarding resources, the aperiodic forwarding time resources are configured by the RRC message according to "NCR-AperiodicFwdConfig-r18→NCR-AperiodicFwdTimeResource-r18". In addition, the network device can activate the specific forwarding time and the beam used for forwarding through DCI (such as DCI 2_8). DCI 2_8 includes a time resource indication field and a beam indication field. The time resource indication field and the beam indication field have a one-to-one correspondence and are used to indicate the forwarding time and forwarding beam of one or more aperiodic forwarding resources configured in the RRC message.

[0158] It can be seen that the configuration of the beam on the relay access side can be seen in Tables 1 to 3. For the beam on the relay backhaul side, the protocol stipulates that the relay backhaul side and the control unit share the beam set. In other words, the relay selects a beam from the beam set corresponding to the control unit for uplink signal reception and downlink signal forwarding, and the network device activates / deactivates the beam through MAC CE.

[0159] FIG4 is another schematic diagram of the MAC CE format provided in an embodiment of the present application.

[0160] As shown in a) in Figure 4, the network device indicates the activated / deactivated downlink beam through the downlink transmission configuration indicator (TCI) status identifier, wherein the downlink TCI status and the downlink beam have a corresponding relationship, and the corresponding downlink beam can be determined according to the downlink TCI status identifier; as shown in b) in Figure 4, the network device indicates the activated / deactivated uplink beam through the uplink TCI status identifier or the sounding reference signal resource index (SRI) or the joint TCI state identifier (Joint TCI State ID), wherein the uplink TCI status and the uplink beam have a corresponding relationship, and the corresponding uplink beam can be determined according to the uplink TCI state identifier.

[0161] As mentioned previously, a relay primarily consists of a control unit and a forwarding unit. Currently, the control unit and forwarding unit share the same frequency band, meaning they have the same frequency band. For example, the frequency bands for the control unit and forwarding unit may be preset when the relay leaves the factory. However, in the future, relays may support different frequency bands for the control unit and forwarding unit. As can be seen from Tables 1 to 3, network devices do not configure the forwarding unit's frequency band when configuring forwarding resources for the relay. Therefore, determining the forwarding unit's frequency band is a pressing issue.

[0162] To solve the above problems, the present application provides a relay configuration method, in which the network device can send a first indication information to the relay to determine the frequency band of the forwarding unit of the relay. Accordingly, the relay can determine the frequency band of the forwarding unit based on the above first indication information.

[0163] The relay configuration method provided in this application will be described in detail below with reference to the accompanying drawings.

[0164] Figure 5 is a schematic flow chart of a relay configuration method 500 provided in an embodiment of the present application. Figure 5 only describes the method by taking the interaction between a network device and a relay as an example, and should not constitute any limitation to the present application. The network device in Figure 5 can also be replaced by a component configured in the network device (such as a chip, a chip system, a processor, etc.), or a logic module or software that can implement all or part of the functions of the network device. The relay can be replaced by a component configured in the relay (such as a chip, a chip system, a processor, etc.), or a logic module or software that can implement all or part of the functions of the relay.

[0165] The method 500 shown in Figure 5 includes steps 510 to 530. Each step in the method 500 is described in detail below.

[0166] In step 510, the network device generates first indication information, where the first indication information is used to determine a frequency band of a forwarding unit of a relay.

[0167] Exemplarily, in a RAN deployed with CU, DU, and RU, the specific implementation of step 510 may be: the CU-CP generates the first indication information; in an ORAN, the specific implementation of step 510 may be: the O-DU generates the first indication information.

[0168] The frequency band of the forwarding unit can also be referred to as the operating frequency band of the forwarding unit, or the frequency band used for signal forwarding. In other words, the forwarding unit operates on this frequency band. Optionally, the above-mentioned frequency band can be replaced by other terms representing frequency domain units, such as frequency band or CC, and this application does not limit this.

[0169] In addition, it should be noted that, in a relay, a control unit may correspond to one or more forwarding units. In this application, the frequency band of one forwarding unit among one or more forwarding units is determined as an example for explanation.

[0170] In step 520, the network device sends the first indication information. Correspondingly, the relay receives the first indication information.

[0171] For example, in a RAN deployed with CU, DU and RU, the specific implementation of step 520 may be: the CU-CP sends the generated first indication information to the relay through the DU and RU; in an ORAN, the specific implementation of step 520 may be: the O-CU-CP sends the generated first indication information to the relay through the O-DU and O-RU.

[0172] After generating the first indication information, the network device sends the first indication information to the relay. Correspondingly, the relay receives the first indication information to determine the frequency band of the forwarding unit.

[0173] Optionally, before receiving the above-mentioned first indication information, the above-mentioned method 500 also includes: the relay sends capability information to the network device, and the capability information is used to indicate one or more of the following: whether the relay supports the control unit and the forwarding unit to operate in different frequency bands, whether the forwarding unit of the relay supports operating in multiple adjacent frequency bands, the frequency band set supported by the forwarding unit, or the number of frequency bands included in each frequency band set.

[0174] Whether the relay supports the control unit and the forwarding unit operating in different frequency bands can be understood as whether the relay supports the control unit operating in a fixed frequency band and the forwarding unit operating in another frequency band or multiple frequency bands.

[0175] Whether the forwarding unit of the relay supports operating in multiple adjacent frequency bands can be understood as whether the forwarding unit of the relay supports operating in multiple adjacent frequency bands when forwarding signals on the same forwarding resource. The multiple adjacent frequency bands mentioned above can also be called flexible frequency bands.

[0176] FIG6 is a schematic diagram of a control unit and a forwarding unit provided in an embodiment of the present application operating in different frequency bands.

[0177] As shown in FIG6 , the control unit of the relay operates on frequency band 0, the forwarding unit of the relay operates on frequency band 0 to frequency band X-1, and the relay supports the control unit and the forwarding unit operating in different frequency bands, where X is an integer greater than or equal to 1.

[0178] It should be understood that the forwarding unit in FIG6 operating on frequency bands 0 to X-1 is merely an example and does not constitute any limitation to this application. For example, in actual applications, the control unit of the relay may operate on frequency band 0, and the forwarding unit may operate on frequency band 1. In this case, the control unit and forwarding unit of the relay can also be considered to operate on different frequency bands.

[0179] It should also be understood that a control unit of a relay may correspond to one or more forwarding units (or a control unit may correspond to one or more access / backhaul units), and this application does not limit this. When a control unit of a relay corresponds to a forwarding unit, the forwarding unit shown in FIG6 can be regarded as a forwarding unit for implementing the forwarding function of the relay, and the operating frequency band of the forwarding unit is band 0 to band X-1.

[0180] FIG7 is a schematic diagram of multiple adjacent frequency bands provided in an embodiment of the present application.

[0181] As shown in Figure 7, frequency bands 1 and 2 are adjacent and target the same forwarding resource. Therefore, frequency bands 1 and 2 can be referred to as multiple adjacent frequency bands (or flexible frequency bands). If frequency bands 1 and 2 target different forwarding resources, or are not adjacent, they cannot be referred to as multiple adjacent frequency bands.

[0182] The capability information may include one or more frequency band sets supported by the forwarding unit, each of which includes one or more frequency bands. Table 4 shows the correspondence between frequency band sets and frequency bands.

[0183] Table 4

[0184] As shown in Table 4, the frequency bands included in frequency band set A are {a0, a1, a2, ...}, the frequency bands included in frequency band set B are {b0, b1, b2, ...}, and the frequency bands included in frequency band set C are {c0, c1, c2, ...}.

[0185] The number of frequency bands included in each frequency band set may be, for example, the number of frequency bands in {a0, a1, a2, ...}, the number of frequency bands in {b0, b1, b2, ...}, and the number of frequency bands in {c0, c1, c2, ...}. In a frequency band set, the number of frequency bands may be 1, i.e., the frequency band set includes one frequency band.

[0186] After receiving the above-mentioned capability information from the relay, the network device can determine the frequency band of the relay's forwarding unit based on the above-mentioned capability information, and then indicate it to the relay. For example, the network device can configure the relay with a frequency band in the frequency band supported by the relay as the frequency band of the forwarding unit. For another example, when the relay supports the control unit and the forwarding unit to operate in different frequency bands, the network device can send a first indication information to the relay in the manner provided by the present application to indicate the frequency band of the relay forwarding unit. For another example, when the forwarding unit of the relay supports operating in multiple adjacent frequency bands, the network device can configure the forwarding unit with multiple adjacent frequency bands.

[0187] The specific content of the first indication information will be explained in detail below with reference to the accompanying drawings and tables.

[0188] Optionally, the first indication information indicates the frequency band of the forwarding unit. In other words, the network device directly indicates the frequency band of the forwarding unit to the relay.

[0189] One possible design is that the first indication information includes an index of the frequency band of the forwarding unit, wherein one frequency band index corresponds to one frequency band, or in other words, the frequency band index corresponds to the frequency band one to one.

[0190] In one example, the network device indicates the index of the frequency band of the forwarding unit by reusing an existing MAC CE. In other words, the first indication information can be carried in the existing MAC CE. For example, the above MAC CE can be an uplink MAC CE or a downlink MAC CE, which is not limited in this application.

[0191] The MAC CE format will be described below in conjunction with Figure 8. Figure 8 is another schematic diagram of the MAC CE format provided by an embodiment of the present application.

[0192] As shown in a) of Figure 8 , the MAC CE may be a downlink MAC CE, which includes an indication of the backhaul side beam of the relay. For example, the backhaul side beam of the relay may be indicated by a downlink TCI state ID. The MAC CE also includes an index of the frequency band of the forwarding unit (such as indicating the index of the frequency band of the forwarding unit through byte 2). As shown in b) of Figure 8 , the MAC CE may be an uplink MAC CE, which includes an indication of the backhaul side beam of the relay. For example, the backhaul side beam of the relay may be indicated by an uplink TCI state ID or SRI or a joint TCI state identifier. The MAC CE also includes an index of the frequency band of the forwarding unit (such as indicating the index of the frequency band of the forwarding unit through byte 2).

[0193] It should be understood that in this application, the index of the frequency band may be simply referred to as the frequency band index.

[0194] In another example, the network device indicates the index of the frequency band of the forwarding unit through a predefined MAC CE, wherein the LCID (which may be called eLCID) in the MAC CE is used to identify that the MAC CE is used to indicate the frequency band of the forwarding unit. In other words, the above MAC CE can be specifically used to indicate the index of the frequency band of the forwarding unit.

[0195] Figure 9 is another schematic diagram of the MAC CE format provided by an embodiment of the present application. As shown in Figure 9, the MAC CE includes the index of the frequency band of the forwarding unit of the relay, that is, the network device can indicate the frequency band of the forwarding unit through the extended MAC CE.

[0196] Optionally, the correspondence between the forwarding unit's frequency band index and the frequency band can be configured by OAM. Exemplarily, OAM sends first configuration information to the network device and the relay. This first configuration information is used to configure the correspondence between one or more forwarding unit indexes and one or more frequency bands, with each index corresponding to a frequency band. Accordingly, the network device receives the first configuration information from OAM, and the relay receives the first configuration information from OAM.

[0197] It is understood that in this application, each frequency band can be identified by a frequency band ID or a frequency band index, that is, the frequency band ID / frequency band index corresponds to the frequency band. The frequency band ID / frequency band index can be used to distinguish different frequency bands.

[0198] Exemplarily, the first configuration information includes one or more indexes of the forwarding unit and the center frequency and bandwidth of the frequency band corresponding to each index, or the first configuration information includes one or more indexes of the forwarding unit and the starting frequency and ending frequency of the frequency band corresponding to each index.

[0199] FIG10 is a schematic diagram of the frequency band index and the corresponding frequency band of the forwarding unit provided in an embodiment of the present application.

[0200] As shown in FIG10 , one or more indexes of the forwarding unit include 0, 1, 2, . . . , K-1, each index corresponds to a different frequency band, where K is an integer greater than or equal to 1.

[0201] Optionally, the first configuration information further includes the number of frequency bands of the forwarding unit. For example, as shown in FIG10 , the number of frequency bands of the forwarding unit is K.

[0202] In the present application, the first configuration information corresponding to different relays may be different. For example, the number of frequency bands of forwarding units corresponding to different relays may be different. For another example, the corresponding relationship between the frequency band index and the frequency band corresponding to different relays is different. For example, for relay 1, the frequency band corresponding to band 0 is 870MHz to 880MHz, and for relay 2, the frequency band corresponding to band 0 is 880MHz to 890MHz. For another example, the width of each frequency band corresponding to different relays may be different. For example, for relay 1, the width of the frequency band of each forwarding unit is 10MHz, and for relay 2, the width of the frequency band of each forwarding unit is 20MHz. It should be understood that the first configuration information corresponding to different relays may also be the same, and this application does not limit this.

[0203] It should be noted that the one or more frequency bands of the forwarding unit configured by OAM include at least one frequency band supported by the relay.

[0204] Another possible design for the first indication information to indicate the frequency band of the forwarding unit is that the first indication information includes the center frequency and bandwidth of the frequency band of the forwarding unit, or the first indication information includes the starting frequency and ending frequency of the frequency band of the forwarding unit. In other words, the network device can directly indicate the starting frequency and ending frequency, or the center frequency and bandwidth, of the frequency band of the forwarding unit to the relay.

[0205] In one example, the center frequency of the frequency band indicated by the forwarding unit in the first indication information is 870 MHz, and the bandwidth is 10 MHz. In another example, the starting frequency of the frequency band indicated by the forwarding unit in the first indication information is 870 MHz, and the ending frequency is 880 MHz. It should be understood that the above example is illustrated by taking the forwarding unit corresponding to one frequency band as an example, but it should not constitute any limitation to the present application. For example, when the forwarding unit supports multiple frequency bands, the first indication information may include multiple center frequency bands and multiple bandwidths, or the first indication information may include multiple starting frequencies and multiple ending frequency bands, and the present application does not limit this.

[0206] As mentioned above, forwarding resources can be divided into periodic forwarding resources, semi-persistent forwarding resources, and aperiodic forwarding resources. The following describes in detail possible designs of the first indication information for each of the three types of forwarding resources.

[0207] 1. Periodic forwarding resources

[0208] The first indication information may be carried in an RRC message, where the RRC message is used to configure one or more forwarding resource sets, each of which includes one or more forwarding resources.

[0209] One possible design is that each forwarding resource set corresponds to a frequency band of the forwarding unit. In other words, "NCR-PeriodicFwdResourceSet-r18" corresponds to (or is bound to) the index of a frequency band, that is, the frequency bands corresponding to the forwarding resources in each periodic forwarding resource set are the same. In addition, the frequency band indices corresponding to different periodic forwarding resource sets can be different or the same, and this application does not limit this.

[0210] Another possible design is that each forwarding resource corresponds to a frequency band of the forwarding unit. In other words,

[0211] "NCR-PeriodicFwdResource-r18" corresponds to the index of a frequency band. In addition, the frequency band indexes corresponding to different forwarding resources can be different or the same, and this application does not limit this. Table 5 shows a possible form of the first indication information.

[0212] Table 5

[0213] As shown in Table 5, "NCR-PeriodicFwdResource-r18" corresponds to the index of a frequency band, that is, the forwarding resource corresponds to a frequency band of the forwarding unit. Where K is the maximum number of frequency bands supported by the relay.

[0214] Another possible design is that one or more forwarding resource sets correspond to a frequency band of a forwarding unit. In other words, "NCR-FwdConfig-r18" corresponds to the index of a frequency band, that is, all forwarding resources of the relay (including semi-persistent forwarding resources and aperiodic forwarding resources) correspond to the frequency band of a forwarding unit, or in other words, all forwarding resources correspond to the same frequency band.

[0215] Optionally, when the relay supports operation in multiple adjacent frequency bands, the network device may further configure information of the multiple adjacent frequency bands (recorded as second indication information). For example, the network device may further configure the information of the multiple adjacent frequency bands via an RRC message. Several possible indication methods are described below.

[0216] In a first approach, the second indication information includes the index of the first frequency band and the number of frequency bands M. For example, the index of the first frequency band = 1, and M = 2, that is, the plurality of adjacent frequency bands include frequency band 1 and frequency band 2.

[0217] In the second mode, the second indication information includes the index of the first frequency band and the index of the last frequency band. For example, the index of the first frequency band = 1, and the index of the last frequency band = 2, that is, the multiple adjacent frequency bands include frequency band 1 and frequency band 2.

[0218] Method three, the second indication information includes the index of the first frequency band and the frequency band bandwidth gain. The frequency band bandwidth gain refers to the increase multiple of the bandwidth of the above-mentioned multiple adjacent frequency bands relative to the first frequency band, and each frequency band corresponds to a bandwidth, wherein the bandwidths corresponding to different frequency bands can be the same or different, and this application does not limit this. For example, the bandwidths of frequency band 1 and frequency band 2 are equal, the index of the first frequency band = 1, and the frequency band bandwidth gain = 2, that is, the above-mentioned multiple adjacent frequency bands include frequency band 1 and frequency band 2. Table 6 shows the content included in the second indication information under the above three methods.

[0219] Table 6

[0220] It can be understood that the network device may also indicate to the relay the information of the plurality of adjacent frequency bands based on one of the three aforementioned methods.

[0221] 2. Semi-persistent forwarding resources

[0222] The first indication information may be carried in an RRC message, where the RRC message is used to configure one or more forwarding resource sets, each of which includes one or more forwarding resources.

[0223] One possible design is that each forwarding resource set (semi-persistent forwarding resource set) corresponds to a frequency band of the forwarding unit. In other words, "NCR-SemiPersistentFwdResourceSet-r18" corresponds to (or is bound to) the index of a frequency band. That is, each forwarding resource in each semi-persistent forwarding resource set corresponds to the same frequency band. In addition, the frequency band indices corresponding to different semi-persistent forwarding resource sets can be different or the same, and this application does not limit this.

[0224] Another possible design is that each forwarding resource (semi-persistent forwarding resource) corresponds to a frequency band of the forwarding unit. In other words, "NCR-SemiPersistentFwdResource-r18" corresponds to the index of a frequency band. In addition, the frequency band indices corresponding to different forwarding resources can be different or the same, and this application does not limit this. Table 7 shows a possible form of the first indication information.

[0225] Table 7

[0226] As shown in Table 7, "NCR-SemiPersistentFwdResource-r18" corresponds to the index of a frequency band, that is, the semi-persistent forwarding resource corresponds to a frequency band of the forwarding unit. Wherein, K is the maximum number of frequency bands supported by the relay.

[0227] Another possible design is that one or more forwarding resource sets correspond to a frequency band of a forwarding unit. In other words, "NCR-FwdConfig-r18" corresponds to the index of a frequency band, that is, all forwarding resources of the relay (including periodic forwarding resources and aperiodic forwarding resources) correspond to the frequency band of a forwarding unit, or in other words, all forwarding resources correspond to the same frequency band.

[0228] For semi-persistent forwarding resources, the network device can activate / deactivate the frequency band corresponding to the forwarding resource through MAC CE.

[0229] One possible implementation manner is that the network device sends a MAC CE to the relay, where the MAC CE is used to activate the frequency band of the forwarding unit.

[0230] Regarding the above-mentioned MAC CE, one possible design is that the LCID in the above-mentioned MAC CE is used to identify that the above-mentioned MAC CE is used to activate the frequency band of the forwarding unit, wherein the above-mentioned LCID may be an eLCID. In other words, the above-mentioned MAC CE is an NCR access link band indication MAC CE, and the NCR access link band indication MAC CE is identified by a MAC subheader with an eLCID. It can be seen that the above-mentioned MAC CE may be an extended MAC CE, or in other words, the above-mentioned MAC CE is a predefined MAC CE specifically used to activate the frequency band of the forwarding unit. For example, when the LCID index = 287, the MAC CE is used to activate / deactivate the frequency band of the forwarding unit.

[0231] FIG11 is a schematic diagram of a format of a MAC CE for activating an index of a frequency band of a forwarding unit provided in an embodiment of the present application.

[0232] As shown in Figure 11, the resource set ID can be, for example, the index of a semi-persistent forwarding resource set. The A / D field is used to identify whether the MAC CE is used to activate the frequency band in the forwarding resource set. For example, an A / D field value of 1 indicates that the MAC CE is used to activate the frequency band in the forwarding resource set. An A / D field value of 0 indicates that the MAC CE is used to deactivate the frequency band in the forwarding resource set. The C field is used to identify whether there is a frequency band index field. For example, a C field value of 1 indicates that the frequency band index field exists. A C field value of 0 indicates that the beam index / frequency band index does not exist, and the C field is only valid when A / D is configured to 1. R is a reserved bit, set to 0. Bytes 2 to N+1 are used to indicate the index of the frequency band of the forwarding resource in the forwarding resource set. The first forwarding resource in the forwarding resource set corresponds to frequency band index ID0, the second forwarding resource in the forwarding resource set corresponds to frequency band index ID1, and the Nth forwarding resource in the forwarding resource set corresponds to frequency band index ID N-1 .

[0233] Optionally, in the case where the relay supports operating in multiple adjacent frequency bands, the network device may further be configured with information of the multiple adjacent frequency bands (recorded as second indication information).

[0234] Exemplarily, the network device may further configure information of the multiple adjacent frequency bands through the MAC CE shown in Figure 11. For example, the number of the multiple adjacent frequency bands may be indicated by the first two reserved fields in Byte 2 to Byte N+1. In this case, the frequency band index indicated by Byte 2 to Byte N+1 may be the index of the first frequency band or the index of the last frequency band of the multiple adjacent frequency bands, which is not limited in this application.

[0235] Optionally, the MAC CE may indicate activation / deactivation of frequency bands corresponding to multiple forwarding resource sets.

[0236] FIG12 is another schematic diagram of the format of the MAC CE for activating the index of the frequency band of the forwarding unit provided in an embodiment of the present application.

[0237] As shown in Figure 12, bytes 2 to byte N+1 are used to activate / deactivate the frequency band corresponding to the N forwarding resources of the semi-continuous forwarding resource set ID0, and bytes N+3 to byte N+M+2 are used to activate / deactivate the frequency band corresponding to the M forwarding resources of the semi-continuous forwarding resource set ID1, where M and N are integers greater than 1.

[0238] Another possible design for activating / deactivating the frequency band corresponding to the forwarding resource through the MAC CE is that the MAC CE includes a first field and a second field, the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set. In other words, existing MAC CEs can be reused, such as the MAC CE used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set, that is, the MAC CE can be used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set, and can also be used to activate the frequency band of the forwarding unit. For example, when the LCID index = 288, the frequency band corresponding to the relay semi-persistent forwarding resource is activated / deactivated.

[0239] FIG13 is another schematic diagram of the format of the MAC CE for activating the index of the frequency band of the forwarding unit provided in an embodiment of the present application.

[0240] As shown in a) in Figure 13, the MAC CE includes the index of the beam corresponding to each forwarding resource in the forwarding resource set, wherein the index of the beam is arranged continuously. The MAC CE also includes the index of the frequency band corresponding to each forwarding resource in the forwarding resource set, wherein the index of the frequency band is arranged continuously.

[0241] As shown in b) of Figure 13, the MAC CE includes the index of the beam corresponding to each forwarding resource in the forwarding resource set, wherein the index of the beam is arranged non-continuously. The MAC CE also includes the index of the frequency band corresponding to each forwarding resource in the forwarding resource set, wherein the index of the frequency band is arranged non-continuously. For example, byte 2 is used to activate / deactivate the beam corresponding to the first forwarding resource of the semi-continuous forwarding resource set, and byte 3 is used to activate / deactivate the frequency band corresponding to the first forwarding resource of the semi-continuous forwarding resource set; byte 4 is used to activate / deactivate the beam corresponding to the second forwarding resource of the semi-continuous forwarding resource set, and byte 5 is used to activate / deactivate the frequency band corresponding to the second forwarding resource of the semi-continuous forwarding resource set, and so on.

[0242] 3. Non-periodic forwarding resources

[0243] The first indication information may be carried in an RRC message, where the RRC message is used to configure one or more forwarding resource sets, each of which includes one or more forwarding resources.

[0244] One possible design is that "NCR-FwdConfig-r18" corresponds to the index of a frequency band, that is, all forwarding resources of the relay (including periodic forwarding resources and semi-continuous forwarding resources) correspond to the frequency band of a forwarding unit, or in other words, all forwarding resources correspond to the same frequency band.

[0245] Another possible design is that "NCR-AperiodicFwdConfig-r18" corresponds to one or more aperiodic forwarding frequency band resource lists / sets, each aperiodic forwarding frequency band resource list corresponds to one or more aperiodic forwarding frequency band resources, namely "NCR-AperiodicFwdBandResource", and each frequency band resource corresponds to the index of a frequency band. Table 8 shows a possible form of the first indication information.

[0246] Table 8

[0247] As shown in Table 8, the "NCR-AperiodicFwdBandResource" is configured with the index of the frequency band. In addition, the network device can also configure multiple adjacent frequency bands (i.e., flexible frequency bands) through the above RRC message. For example, the "NCR-AperiodicFwdBandResource" corresponds to (or is bound to) the indexes of multiple adjacent frequency bands. Among them, the "SizeofFlexibleBand" is configured with the number of the above multiple adjacent frequency bands.

[0248] For non-periodic forwarding resources, the network device can activate the frequency band corresponding to the forwarding resource through DCI.

[0249] One possible implementation is that the network device sends DCI to the relay, where the DCI is used to activate the frequency band of the forwarding unit. Correspondingly, the relay receives the DCI from the network device.

[0250] In one example, the network device activates the frequency band corresponding to the aperiodic forwarding resource through a predefined DCI (such as DCI 2_9). On the one hand, the network device can pre-configure the length (or bit width) of the frequency band field in the RRC message and the maximum number of frequency band fields, and the maximum number of frequency band fields is greater than or equal to the number of aperiodic forwarding resources actually indicated. On the other hand, the network device can also pre-define the correspondence between the frequency band field and the aperiodic forwarding resource, for example, field 1 corresponds to the first forwarding resource in the aperiodic forwarding resource set, field 2 corresponds to the second forwarding resource in the aperiodic forwarding resource set, and so on.

[0251] FIG14 is a schematic diagram of a frequency band indication field in a DCI provided in an embodiment of the present application.

[0252] As shown in FIG14 , the maximum number of frequency band fields is N, and each field corresponds to a forwarding resource in the non-periodic forwarding resource set to indicate the frequency band corresponding to the forwarding resource.

[0253] In another example, the network device reuses the existing DCI (such as DCI 2_8), and the frequency band indication field is combined with the beam indication field and the time resource indication field to activate the frequency band of the non-periodic forwarding resource. The length N of the field used to indicate the frequency band in the DCI is pre-configured, or determined according to the number of frequency bands configured in the RRC message. For example, Where J represents the number of frequency bands configured in the RRC message. The frequency band indicator field and the time resource indicator field / beam indicator field have a one-to-one correspondence and are mapped to the corresponding aperiodic forwarding resource. In other words, one aperiodic forwarding resource corresponds to one frequency band indicator field.

[0254] FIG15 is another schematic diagram of the frequency band indication field in the DCI provided in an embodiment of the present application.

[0255] As shown in Figure 15, the frequency band indicator field in the DCI is combined with the beam indicator field and the time resource indicator (TRI) field. One aperiodic forwarding resource corresponds to one frequency band indicator field, one beam indicator field, and one time resource indicator field. Where N is the maximum number of frequency band fields and is an integer greater than or equal to 1.

[0256] Optionally, the first indication information indicates a frequency band of a control unit of the relay; and the above method further includes: the relay determines a frequency band of the forwarding unit according to the frequency band of the control unit.

[0257] Exemplarily, after receiving the first indication information from the network device, the relay determines the frequency band of the forwarding unit according to the frequency band of the control unit of the relay indicated in the first indication information.

[0258] It should be understood that the above-mentioned first indication information indicates the frequency band of the control unit of the relay. In this way, the relay can also determine the frequency band of the control unit (or the working frequency band of the control unit). In other words, the above-mentioned first indication information is also used to determine the frequency band of the control unit of the relay.

[0259] It should also be understood that the first indication information may also be used only to indicate the frequency band of the control unit of the relay. The first indication information includes the index of the frequency band of the control unit. Alternatively, the first indication information includes the starting frequency point and the ending frequency point of the frequency band of the control unit, or the first indication information includes the center frequency point and the bandwidth of the frequency band of the control unit. The relay can determine the frequency band of the control unit based on the first indication information.

[0260] In the following, description is given by taking an example where the first indication information indicates the frequency band of the control unit and the relay determines the frequency band of the forwarding unit according to the frequency band of the control unit.

[0261] A possible design of the first indication information is that the first indication information includes the index of the frequency band of the control unit; and the above-mentioned determination of the frequency band of the forwarding unit based on the frequency band of the control unit includes: determining the frequency band of the forwarding unit based on the index of the frequency band of the control unit and the first offset and / or the first coefficient, the first offset is the offset of the index of the frequency band, and the first coefficient is the coefficient for increasing or reducing the bandwidth of the frequency band of the control unit.

[0262] Optionally, the first offset and / or first coefficient are predefined or configured by the network device, which is not limited in this application.

[0263] In one example, the frequency band index of the forwarding unit = the frequency band index of the control unit + the first offset. For example, if the frequency band index of the control unit is 1 and the first offset is 2, the frequency band index of the forwarding unit is 1+2=3.

[0264] In another example, the bandwidth of the frequency band of the forwarding unit is the product of the bandwidth of the frequency band of the control unit and the first coefficient. The relay can determine the corresponding frequency band according to the index of the frequency band of the control unit, and further determine the bandwidth of the frequency band of the forwarding unit according to the bandwidth of the frequency band of the control unit. For example, the index of the frequency band of the control unit is 1, the corresponding frequency band is 870MHz to 880MHz, and the first coefficient is 2, then the bandwidth of the frequency band of the forwarding unit is 20MHz. The frequency band of the forwarding unit can be, for example, a frequency point with a center frequency point of the frequency band of the control unit as the center frequency band and a bandwidth of 20MHz, such as 865MHz to 885MHz.

[0265] Optionally, the correspondence between the control unit's frequency band index and the frequency band can be configured by OAM. Exemplarily, OAM sends second configuration information to the network device and relay. This second configuration information is used to configure the correspondence between one or more control unit indexes and one or more frequency bands, with each index corresponding to a frequency band. Accordingly, the network device receives the second configuration information from OAM, and the relay receives the second configuration information from OAM.

[0266] It is understood that in this application, each frequency band can be identified by a frequency band ID or a frequency band index, that is, the frequency band ID / frequency band index can be used to distinguish different frequency bands. The frequency band ID / frequency band index corresponds one to one with the frequency band.

[0267] Exemplarily, the second configuration information includes one or more indexes of the control unit and the center frequency and bandwidth of the frequency band corresponding to each index, or the second configuration information includes one or more indexes of the control unit and the starting frequency and ending frequency of the frequency band corresponding to each index.

[0268] In this application, the second configuration information corresponding to different relays may be different. For example, the number of frequency bands in the control unit corresponding to different relays may be different. For another example, the corresponding relationship between the frequency band index and the frequency band in the control unit corresponding to different relays may be different. For another example, the width of each frequency band corresponding to different relays may be different. For a specific description of the second configuration information, please refer to the explanation of the first configuration information and will not be described in detail here. It should be understood that the second configuration information corresponding to different relays may also be the same, and this application does not limit this.

[0269] Another possible design of the first indication information is that the first indication information includes the starting frequency and ending frequency of the frequency band of the control unit, or the first indication information includes the center frequency and bandwidth of the frequency band of the control unit; and, based on the frequency band of the control unit, determining the frequency band of the forwarding unit, including: determining the frequency band of the forwarding unit based on the center frequency of the frequency band of the control unit and the second offset and / or the first coefficient, the second offset is the offset of the center frequency of the frequency band, and the first coefficient is the coefficient for increasing or reducing the bandwidth of the frequency band of the control unit.

[0270] Optionally, the second offset and / or first coefficient are predefined or configured by the network device, which is not limited in this application.

[0271] It should be noted that the first offset is the offset of the frequency band index, and the second offset is the offset of the center frequency of the frequency band. The first offset and the second offset have different meanings. For example, the frequency band index can be 0, 1, 2, 3, or Q-1, and the first offset can be 1, 2, or k, where Q and k are integers; the center frequency of the frequency band can be 870 MHz, 880 MHz, 890 MHz, etc., and the second offset can be 10 MHz, 20 MHz, etc.

[0272] In one example, the center frequency of the forwarding unit's frequency band = the center frequency of the control unit's frequency band + the second offset. The width of the forwarding unit's frequency band can be the same as the width of the control unit's frequency band. For example, if the center frequency of the control unit's frequency band is 875 MHz, the bandwidth is 10 MHz, and the second offset is 20 MHz, then the center frequency of the forwarding unit's frequency band is 895 MHz, and the bandwidth is 10 MHz.

[0273] In another example, the bandwidth of the frequency band of the forwarding unit is the product of the bandwidth of the frequency band of the control unit and the first coefficient. For example, if the frequency band of the control unit is 870 MHz to 880 MHz and the first coefficient is 2, then the bandwidth of the frequency band of the forwarding unit is 20 MHz. The frequency band of the forwarding unit can be, for example, a frequency point with a center frequency of the frequency band of the control unit as the center frequency point and a bandwidth of 20 MHz, such as 865 MHz to 885 MHz.

[0274] In step 530, the relay forwards the signal on the frequency band of the forwarding unit.

[0275] After determining the frequency band of the forwarding unit, the relay forwards the signal on the frequency band. In other words, the relay forwards the signal based on the frequency band of the forwarding unit.

[0276] Based on the above technical solution, the network device can send a first indication information for determining the frequency band of the forwarding unit to the relay, so that the relay can determine the frequency band of the forwarding unit based on the above first indication information, thereby facilitating the improvement of the flexibility of resource configuration, for example, facilitating the flexible configuration of the working frequency band of the forwarding unit of the relay.

[0277] The relay configuration method provided by the embodiment of the present application is described in detail above with reference to the accompanying drawings.

[0278] It should be understood that the devices shown in Figures 16 and 17 can be used to implement the functions of the network device or relay in the above-mentioned method embodiments, and therefore can also achieve the beneficial effects possessed by the above-mentioned method embodiments. In the embodiments of the present application, the device can be the network device in the method embodiment shown in Figure 5, or it can be a component configured in the network device (such as a chip, a chip system, a processor, etc.), or it can be a logic module or software that can implement some or all of the functions of the network device; or, the device can be the relay in the method embodiment shown in Figure 5, or it can be a component configured in the relay (such as a chip, a chip system, a processor, etc.), or it can be a logic module or software that can implement some or all of the functions of the relay.

[0279] FIG16 is a schematic block diagram of a communication device 1600 provided in an embodiment of the present application.

[0280] As shown in Figure 16, the apparatus 1600 includes a transceiver module 1610 and a processing module 1620. The apparatus 1600 can be used to implement the functions of the network device or relay in the method embodiment shown in Figure 5 above.

[0281] When the device 1600 is used to implement the function of the network device in the method embodiment shown in Figure 5, the processing module 1620 can be used to generate first indication information, which is used to determine the frequency band of the forwarding unit of the relay, and the transceiver module 1610 can be used to send the above-mentioned first indication information to the relay.

[0282] Optionally, the first indication information includes an index of a frequency band of the forwarding unit.

[0283] Optionally, the first indication information includes a start frequency point and an end frequency point of the frequency band of the forwarding unit, or the first indication information includes a center frequency point and a bandwidth of the frequency band of the forwarding unit.

[0284] Optionally, the first indication information is carried in an RRC message, which is used to configure one or more forwarding resource sets, each forwarding resource set including one or more forwarding resources, wherein each forwarding resource set corresponds to a frequency band of the forwarding unit, or each forwarding resource corresponds to a frequency band of the forwarding unit, or the above-mentioned one or more forwarding resource sets correspond to a frequency band of the forwarding unit.

[0285] Optionally, the transceiver module 1610 is further configured to send a MAC CE to the relay, where the MAC CE is used to activate a frequency band of the forwarding unit.

[0286] Optionally, the LCID in the above MAC CE is used to identify the frequency band used by the MAC CE to activate the forwarding unit.

[0287] Optionally, the above-mentioned MAC CE includes a first field and a second field, the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set, and the forwarding resource set includes at least one forwarding resource.

[0288] Optionally, the transceiver module 1610 is further configured to send DCI to the relay, where the DCI is used to activate a frequency band of the forwarding unit.

[0289] Optionally, the first indication information indicates a frequency band of the control unit of the relay.

[0290] Optionally, the first indication information includes an index of a frequency band of the control unit.

[0291] Optionally, the first indication information includes the starting frequency point and the ending frequency point of the frequency band of the control unit, or the first indication information includes the center frequency point and the bandwidth of the frequency band of the control unit.

[0292] When the device 1600 is used to implement the relay function in the method embodiment shown in Figure 5, the transceiver module 1610 can be used to receive first indication information from the network device, and the first indication information is used to determine the frequency band of the forwarding unit of the relay; the processing module 1620 can be used to forward signals on the above-mentioned frequency band.

[0293] Optionally, the first indication information includes an index of a frequency band of the forwarding unit.

[0294] Optionally, the first indication information includes a start frequency point and an end frequency point of the frequency band of the forwarding unit, or the first indication information includes a center frequency point and a bandwidth of the frequency band of the forwarding unit.

[0295] Optionally, the first indication information is carried in an RRC message, which is used to configure one or more forwarding resource sets, each forwarding resource set including one or more forwarding resources, wherein each forwarding resource set corresponds to a frequency band of the forwarding unit, or each forwarding resource corresponds to a frequency band of the forwarding unit, or one or more forwarding resource sets correspond to a frequency band of the forwarding unit.

[0296] Optionally, the transceiver module 1610 is further configured to receive a MAC CE from a network device, where the MAC CE is used to activate a frequency band of the forwarding unit.

[0297] Optionally, the LCID in the above MAC CE is used to identify the frequency band used by the MAC CE to activate the forwarding unit.

[0298] Optionally, the above-mentioned MAC CE includes a first field and a second field, the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate the access side beam corresponding to each forwarding resource in the forwarding resource set, and the forwarding resource set includes at least one forwarding resource.

[0299] Optionally, the transceiver module 1610 is further configured to receive DCI from a network device, where the DCI is used to activate a frequency band of the forwarding unit.

[0300] Optionally, the first indication information indicates a frequency band of a control unit of the relay; and the processing module 1620 is further configured to determine a frequency band of a forwarding unit according to the frequency band of the control unit.

[0301] Optionally, the first indication information includes the index of the frequency band of the control unit; and the processing module 1620 is specifically used to determine the frequency band of the forwarding unit based on the index of the frequency band of the control unit and the first offset and / or the first coefficient, the first offset is the offset of the index of the frequency band, and the first coefficient is the coefficient by which the bandwidth of the frequency band of the control unit increases or decreases.

[0302] Optionally, the first indication information includes the starting frequency and ending frequency of the frequency band of the control unit, or the first indication information includes the center frequency and bandwidth of the frequency band of the control unit; and the processing module 1620 is specifically used to determine the frequency band of the forwarding unit based on the center frequency of the frequency band of the control unit and the second offset and / or the first coefficient, the second offset is the offset of the center frequency of the frequency band, and the first coefficient is the coefficient for increasing or decreasing the bandwidth of the frequency band of the control unit.

[0303] A more detailed description of each of the above modules can be directly obtained by referring to the relevant description in the method embodiment shown in FIG5 , which is not repeated here.

[0304] It should be understood that the division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically as separate modules, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0305] FIG17 is another schematic block diagram of a communication device 1700 provided in an embodiment of the present application.

[0306] The device 1700 may be a chip system, or may be a device configured with a chip system for implementing the method described in the above method embodiment. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0307] As shown in FIG17 , the apparatus 1700 may include a processor 1710 , which may be configured to execute computer programs or instructions in a memory to implement the steps performed by the network device or the steps performed by the relay in the method embodiment shown in FIG5 .

[0308] Optionally, the apparatus 1700 further includes a communication interface 1720. The communication interface 1720 can be used to communicate with other devices via a transmission medium, thereby enabling the apparatus 1700 to communicate with other devices. The communication interface 1720 can be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of performing transceiver functions. The processor 1710 can utilize the communication interface 1720 to input and output data and implement the method described in the embodiment corresponding to FIG. 5 . Specifically, the apparatus 1700 can be used to implement the functions of a network device or relay in the above-described method embodiments.

[0309] Optionally, the device 1700 further includes at least one memory 1730 for storing program instructions and / or data. The memory 1730 is coupled to the processor 1710. Coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. The processor 1710 may operate in conjunction with the memory 1730. The processor 1710 may execute program instructions stored in the memory 1730. At least one of the at least one memory may be included in the processor.

[0310] It should be understood that the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1710 may operate in conjunction with the memory 1730. The specific connection medium between the above-mentioned processor 1710, communication interface 1720 and memory 1730 is not limited in the embodiments of the present application. In Figure 17, the embodiment of the present application is connected by bus 1740 between the processor 1710, communication interface 1720 and memory 1730. Bus 1740 is represented by a bold line in Figure 17. The connection method between other components is only for schematic illustration and is not limiting. The bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one bold line is used in Figure 17, but this does not mean that there is only one bus or one type of bus.

[0311] FIG18 is another structural diagram of a communication device 1800 provided in an embodiment of the present application.

[0312] The communication device 1800 can be, for example, a network device or a terminal, and the device 1800 can be used to implement the method performed by the network device in the embodiment shown in Figure 5. The device 1800 logically includes multiple parts, such as a processor 1810, a memory 1820, and a signal transceiver unit 1830, which are used to implement communication and signaling interaction with the network device and the terminal (or relay). Among them, the memory 1820 stores a computer program or instruction. When the device 1800 executes the above computer program or instruction, the method shown in Figure 5 can be implemented. The signal transceiver unit 1830 includes a transmitter 1831, a receiver 1832, and an antenna 1833. For example, when the communication device 1800 is a network device, the receiver 1832 can be used to receive information through the antenna 1833, and the transmitter 1831 can be used to send information through the antenna 1833.

[0313] FIG19 is another structural diagram of a communication device 1900 provided in an embodiment of the present application.

[0314] The communication device 1900 can be, for example, a terminal or a network device. The device 1900 can be used to implement the method described in the embodiment shown in FIG5 . The device 1900 logically includes multiple components, such as a processor 1901, a memory 1902, and a signal transceiver unit 1903. The memory 1902 can be used to store computer programs (also referred to as code or instructions). The signal transceiver unit 1903 is used to implement communication and signaling exchange between the network device and the terminal, as well as signal amplification. The signal transceiver unit 1903 includes a transmitter 1903a, a receiver 1903b, and an antenna 1903c. In antenna 1903c, each box represents a digital channel. F in the box represents the digital precoding weight. A phase shifter (circle with an oblique arrow) represents an analog channel, connecting one or multiple arrays. In practice, one phase shifter can control multiple arrays, or the phase shifter can be cross-connected to the arrays.

[0315] FIG20 is a schematic structural diagram of the relay 2000 provided in an embodiment of the present application.

[0316] The relay 2000 can be used to implement the steps performed by the relay in the embodiment shown in Figure 5. The relay 2000 logically includes multiple parts, such as a signal transceiver unit 2010, a controller 2020, a signal amplifier 2030, and a signal transceiver unit 2040, which are used to implement communication and signaling interaction with network devices and terminal devices, signal amplification, etc. Among them, the controller 2020 is also called MT, and the other parts of the block diagram can constitute a wireless radio unit (radio unit, RU) (also known as a distributed unit (distributed unit, DU), or a distributed radio unit (distributed radio unit, DRU), etc.). The signal transceiver unit 2010 includes a transmitter 2011, a receiver 2012 and an antenna 2013. The signal transceiver unit 2040 includes a transmitter 2041, a receiver 2042 and an antenna 2043.

[0317] Exemplarily, during downlink communication, a signal transceiver unit 2010 in the relay is used to receive a signal from a network device, and another signal transceiver unit 2040 is used to forward the amplified received signal to the terminal device. In addition, the controller 2020 can also communicate with the network device or the terminal device with the help of the signal transceiver unit. For example, the controller 2020 communicates with the network device through the signal transceiver unit to establish a communication link and beam alignment between the relay and the network device; it can also be used to receive configuration / instruction information of the network device, thereby facilitating the network device to control the working time, working status, or working mode of the relay; or it can be used to receive a trigger signal from the terminal device, so that the relay enters the corresponding working mode as needed. For another example, the controller 2020 can also determine the working status of the signal amplifier (such as amplification factor, phase) based on the network device indication information or its own measurement information. It should be understood that each unit can be one or more. For example, there are multiple signal amplifiers 2030, each corresponding to different polarization directions or relay wireless radio frequency channels.

[0318] The present application also provides a computer program product, which includes: a computer program (also referred to as code, or instructions). When the computer program is executed, it can implement the steps performed by the network device or the steps performed by the relay in the method described in the embodiment shown in Figure 5.

[0319] The present application also provides a computer-readable storage medium storing a computer program (also referred to as code or instructions). When the computer program is executed, the steps performed by the network device or the relay in the method described in the embodiment shown in FIG5 can be implemented.

[0320] An embodiment of the present application provides a communication system, which includes the network device and relay as described above.

[0321] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0322] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile 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. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0323] The terms "unit", "module", etc. used in this specification can be used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. The terms "unit" and "module" in the embodiments of this application have the same meaning and can be used interchangeably.

[0324] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, and can be electrical, mechanical, or other forms.

[0325] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0326] In addition, 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.

[0327] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. 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 (program) 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. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0328] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the technology or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0329] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A relay configuration method, characterized in that, Including: Receiving first indication information from a network device, where the first indication information is used to determine the frequency band of a forwarding unit of a relay; Forwarding a signal on the frequency band.

2. The method according to claim 1, wherein The first indication information includes an index of the frequency band of the forwarding unit.

3. The method according to claim 1, wherein The first indication information includes a start frequency point and an end frequency point of the frequency band of the forwarding unit, or the first indication information includes a center frequency point and a frequency band width of the frequency band of the forwarding unit.

4. The method according to any one of claims 1 to 3, characterized in that, The first indication information is carried in a Radio Resource Control (RRC) message, and the RRC message is used to configure one or more forwarding resource sets, each forwarding resource set includes one or more forwarding resources, where each forwarding resource set corresponds to a frequency band of the forwarding unit, or each forwarding resource corresponds to a frequency band of the forwarding unit, or the one or more forwarding resource sets correspond to a frequency band of the forwarding unit.

5. The method according to claim 4, wherein The method further includes: Receiving a Medium Access Control (MAC) control element (CE) from the network device, where the MAC CE is used to activate the frequency band of the forwarding unit.

6. The method according to claim 5, wherein A logical channel identifier (LCID) in the MAC CE is used to identify that the MAC CE is used to activate the frequency band of the forwarding unit.

7. The method according to claim 5, characterized in that, The MAC CE includes a first field and a second field, the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate access-side beams corresponding to respective forwarding resources in a forwarding resource set, where the forwarding resource set includes at least one forwarding resource.

8. The method according to claim 4, wherein The method further includes: Receiving downlink control information (DCI) from the network device, where the DCI is used to activate the frequency band of the forwarding unit.

9. The method according to claim 1, characterized in that The first indication information indicates the frequency band of a control unit of the relay; and the method further includes: Determining the frequency band of the forwarding unit according to the frequency band of the control unit.

10. The method according to claim 9, wherein The first indication information includes an index of the frequency band of the control unit; and the determining the frequency band of the forwarding unit according to the frequency band of the control unit includes: Determining the frequency band of the forwarding unit according to the index of the frequency band of the control unit, a first offset, and / or a first coefficient, where the first offset is an offset of the index of the frequency band, and the first coefficient is a coefficient for increasing or decreasing the bandwidth of the frequency band of the control unit.

11. The method according to claim 9, characterized in that, The first indication information includes a start frequency point and an end frequency point of the frequency band of the control unit, or the first indication information includes a center frequency point and a frequency band width of the frequency band of the control unit; and the determining the frequency band of the forwarding unit according to the frequency band of the control unit includes: Determining the frequency band of the forwarding unit according to the center frequency point of the frequency band of the control unit, a second offset, and / or a first coefficient, where the second offset is an offset of the center frequency point of the frequency band, and the first coefficient is a coefficient for increasing or decreasing the bandwidth of the frequency band of the control unit.

12. A relay configuration method, characterized in that, Including: Generating first indication information, where the first indication information is used to determine the frequency band of a forwarding unit of a relay; Sending the first indication information to the relay.

13. The method according to claim 12, characterized in that, The first indication information includes an index of the frequency band of the forwarding unit.

14. The method according to claim 12, characterized in that, The first indication information includes the start frequency point and the end frequency point of the frequency band of the forwarding unit, or the first indication information includes the center frequency point and the frequency band width of the frequency band of the forwarding unit.

15. The method according to any one of claims 12 to 14, characterized in that, The first indication information is carried in a Radio Resource Control (RRC) message, and the RRC message is used to configure one or more forwarding resource sets, each forwarding resource set includes one or more forwarding resources, wherein each forwarding resource set corresponds to a frequency band of the forwarding unit, or each forwarding resource corresponds to a frequency band of the forwarding unit, or the one or more forwarding resource sets correspond to a frequency band of the forwarding unit.

16. The method according to claim 15, characterized in that, The method further includes: Sending a Medium Access Control (MAC) control element (CE) to the relay, and the MAC CE is used to activate the frequency band of the forwarding unit.

17. The method according to claim 16, wherein The logical channel identifier (LCID) in the MAC CE is used to identify that the MAC CE is used to activate the frequency band of the forwarding unit.

18. The method according to claim 16, wherein The MAC CE includes a first field and a second field, the first field is used to activate the frequency band of the forwarding unit, and the second field is used to activate the access side beams corresponding to the respective forwarding resources in the forwarding resource set, and the forwarding resource set includes at least one forwarding resource.

19. The method according to claim 15, wherein The method further includes: Sending downlink control information (DCI) to the relay, and the DCI is used to activate the frequency band of the forwarding unit.

20. The method according to claim 12, wherein The first indication information indicates the frequency band of the control unit of the relay.

21. The method according to claim 20, characterized in that, The first indication information includes an index of the frequency band of the control unit.

22. The method according to claim 20, wherein, The first indication information includes the start frequency point and the end frequency point of the frequency band of the control unit, or the first indication information includes the center frequency point and the frequency band width of the frequency band of the control unit.

23. A communication system, characterized in that, The communication system includes a relay and a network device, the relay is used to implement the method according to any one of claims 1 to 11, and the network device is used to implement the method according to any one of claims 12 to 22.

24. A communication device, characterized in that, It includes a module for implementing the method according to any one of claims 1 to 11, or includes a module for implementing the method according to any one of claims 12 to 22.

25. A communication device, characterized in that, It includes a processor and a memory, wherein The memory is used to store a computer program; The processor is used to call the computer program so that the device implements the method according to any one of claims 1 to 11, or implements the method according to any one of claims 12 to 22.

26. A computer-readable storage medium, characterized in that, A computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a computer, it implements the method according to any one of claims 1 to 11, or implements the method according to any one of claims 12 to 22.

27. A computer program product, characterized in that, The computer program product includes an instruction, and when the instruction is run by a computer, it implements the method according to any one of claims 1 to 11, or implements the method according to any one of claims 12 to 22.

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