Signal transfer method and communication device

Abstract

The present application provides a signal forwarding method and a communication device, which relates to the field of communication technology for selecting an amplification power suitable for amplifying a signal to be forwarded, and forwarding the amplified signal to be forwarded. The method includes the steps of receiving the signal to be forwarded, amplifying the signal to be forwarded based on an amplification gain of the signal to be forwarded, where the amplification gain of the signal to be forwarded is determined by measuring a measurement signal, and the measurement signal corresponds to the signal to be forwarded, and forwarding the amplified signal to be forwarded. A relay device may determine the amplification gain of the signal to be forwarded by measuring the measurement signal, amplify the signal to be forwarded based on the amplification gain of the signal to be forwarded, and forward the amplified signal to be forwarded.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202110469046.8, entitled "SIGNAL FORWARDING METHOD AND COMMUNICATION APPARATUS," filed with the State Intellectual Property Office of China on April 28, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of communication technology, and in particular to a signal transfer method and a communication device. [Background technology]

[0003] In current communication networks, relay devices may be disposed between access network devices and terminal devices to improve signal transmission performance. However, when the downlink signals transmitted by the access network devices to the relay devices are different (e.g., the signal bandwidths are different and the signal beams are different), the powers of the downlink signals received by the relay devices are different. Due to the different powers of the downlink signals, the relay devices cannot select appropriate amplification powers to amplify the downlink signals. Summary of the Invention

[0004] The present application provides a signal forwarding method and a communication apparatus to solve the problem in the prior art that a relay device cannot select an appropriate amplification power to amplify a downlink signal. [Means for solving the problem]

[0005] In order to achieve the aforementioned objectives, the following technical solutions are used in this application:

[0006] According to a first aspect, there is provided a signal transfer method, the method including: The relay device receives the signal to be forwarded. The relay device amplifies the signal to be forwarded based on an amplification gain of the signal to be forwarded, the amplification gain of the signal to be forwarded being determined by measuring a measurement signal, the measurement signal corresponding to the signal to be forwarded. The relay device forwards the amplified signal to be forwarded.

[0007] Based on the above technical solution, an embodiment of the present application provides a signal forwarding method. After receiving a signal to be forwarded, the relay device amplifies the signal to be forwarded based on an amplification gain of the signal to be forwarded, and forwards the amplified signal to be forwarded. The amplification gain is determined by measuring a measurement signal. The measurement signal corresponds to the signal to be forwarded. In this way, the relay device determines the amplification gain of the signal to be forwarded by measuring the measurement signal, thereby solving the problem in the prior art that the relay device cannot select an appropriate amplification power for amplifying a downlink signal.

[0008] In addition, in the signal forwarding method provided in this embodiment of the present application, the relay device may measure the measurement signal in advance to determine the amplification gain of the signal to be forwarded. After receiving the signal to be forwarded, the relay device amplifies the signal to be forwarded based on the amplification gain of the signal to be forwarded and forwards the amplified signal to be forwarded. This can prevent the problem that the relay device cannot completely forward the signal to be forwarded caused by the measurement performed when the signal to be forwarded is received.

[0009] According to a first aspect, in a possible implementation, the signal to be transferred is carried on time-frequency resources. The time-frequency resources correspond to the measurement signal. Receiving the signal to be transferred particularly includes receiving the signal carried on the time-frequency resources. Amplifying the signal to be transferred based on an amplification gain of the signal to be transferred particularly includes determining an amplification gain determined by measuring the measurement signal based on a correspondence between the time-frequency resources and the measurement signal, and amplifying the signal carried on the time-frequency resources based on the amplification gain.

[0010] Based on this, the time-frequency resource carrying the forwarded signal is associated with the measurement signal, so that after the relay device measures the measurement signal to determine the amplification gain, the relay device can directly amplify the forwarded signal based on the amplification gain of the forwarded signal after receiving the forwarded signal on the time-frequency resource, and forward the amplified forwarded signal, thereby reducing the delay in forwarding the signal by the relay device.

[0011] According to the first aspect, in a possible implementation, the method further includes the relay device receiving the measurement signal and measuring the measurement signal to determine an amplification gain.

[0012] Based on this, the relay device measures the measurement signal to determine the amplification gain so that the relay device can amplify the signal to be forwarded corresponding to the measurement signal based on the amplification gain and forward the amplified signal to be forwarded, thereby improving the efficiency of determining the amplification gain of the signal to be forwarded by the relay device.

[0013] According to a first aspect, in a possible implementation, measuring the measurement signal to determine the amplification gain particularly includes measuring the measurement signal to determine a reception quality, and determining the amplification gain based on the reception quality and the target transmission quality.

[0014] Based on this, the relay device may determine the amplification gain by measuring the reception quality and target transmission quality of the signal. The reception quality may be expressed using the reception power. The target transmission quality may be expressed using the target transmission power. In this way, the relay device may directly determine the amplification power based on the reception power and the target transmission power.

[0015] According to the first aspect, in a possible implementation form, determining the amplification gain based on the reception quality and the target transmission quality particularly includes determining the amplification gain based on the reception quality and the target transmission quality corresponding to the EVM.

[0016] Based on this, the relay device may further determine the amplification gains of the measurement signal and the signal to be forwarded under different EVMs, so that the determined amplification gains of the signal to be forwarded better meet the forwarding requirements of the signal to be forwarded.

[0017] According to the first aspect, in a possible implementation, the measurement signal is indicated using at least one of the following signaling: RRC, MAC-CE, and DCI.

[0018] Based on this, the access network device may indicate the measurement signal to the relay device by using different signaling messages, thereby increasing the application scenarios in which the access network device indicates the measurement signal.

[0019] According to the first aspect, in a possible implementation, the EVM is indicated by at least one of the signalings.

[0020] Based on this, the access network device may indicate the EVM to the relay device by using different signaling messages, thereby increasing the application scenarios in which the access network device indicates the EVM.

[0021] According to the first aspect, in a possible implementation, the method further includes reporting the amplification gain.

[0022] Based on this, the relay device may report the amplification gain to the access network device so that the access network device can determine the amplification gain determined by measuring the measurement signal, which provides a basis for the access network device to determine the amplification gain of the signal to be forwarded.

[0023] According to a first aspect, in a possible implementation form, the method further includes receiving instruction information, the instruction information indicating and being used to determine an amplification gain of the signal to be transferred.

[0024] Based on this, the relay device can use the access network device to indicate to the relay device the amplification gain of the signal to be forwarded based on the indication information, so that the relay device can determine the amplification gain of the signal to be forwarded without calculation, thereby reducing the implementation complexity of the relay device.

[0025] According to a second aspect, there is provided a signal forwarding method, the method comprising: transmitting a measurement signal, the measurement signal being used to determine an amplification gain of a signal to be forwarded, the measurement signal corresponding to the signal to be forwarded; and transmitting the signal to be forwarded.

[0026] According to a second aspect, in a possible implementation, the forwarded signal is carried on a time-frequency resource, the time-frequency resource corresponds to the measurement signal, and transmitting the forwarded signal includes transmitting the forwarded signal on the time-frequency resource.

[0027] According to a second aspect, in a possible implementation, the method further includes transmitting an error vector magnitude EVM indication.

[0028] According to the second aspect, in a possible implementation, the measurement signal is indicated using at least one of the following signaling: RRC, MAC-CE, and DCI.

[0029] According to a second aspect, in a possible implementation, the EVM is indicated by at least one of the signalings.

[0030] According to the second aspect, in a possible implementation, the method further includes receiving an amplification gain.

[0031] According to a second aspect, in a possible implementation form, the method further includes transmitting instruction information, the instruction information indicating and being used to determine an amplification gain of the signal to be transferred.

[0032] According to a third aspect, a communication device is provided. The communication device includes a communication unit and a processing unit. The communication unit is configured to receive a signal to be forwarded. The processing unit is configured to amplify the signal to be forwarded based on an amplification gain of the signal to be forwarded. The amplification gain of the signal to be forwarded is determined by measuring a measurement signal. The measurement signal corresponds to the signal to be forwarded. The communication unit is further configured to forward the amplified signal to be forwarded.

[0033] According to a third aspect, in a possible implementation, a signal to be transferred is carried on a time-frequency resource. The time-frequency resource corresponds to a measurement signal. The processing unit is particularly configured to instruct a communication unit to receive the signal carried on the time-frequency resource. The processing unit is particularly configured to determine an amplification gain determined by measuring the measurement signal based on the correspondence between the time-frequency resource and the measurement signal, and amplify the signal carried on the time-frequency resource based on the amplification gain.

[0034] According to the third aspect, in a possible implementation, the communication unit is further configured to receive a measurement signal, and the processing unit is further configured to measure the measurement signal to determine an amplification gain.

[0035] According to a third aspect, in a possible implementation, the processing unit is particularly configured to measure the measurement signal to determine the reception quality, and to determine the amplification gain based on the reception quality and the target transmission quality.

[0036] According to a third aspect, in a possible implementation, the processing unit is particularly configured to determine the amplification gain based on a reception quality corresponding to the EVM and a target transmission quality.

[0037] According to the third aspect, in a possible implementation, the measurement signal is indicated using at least one of the following signaling: RRC, MAC-CE, and DCI.

[0038] According to a third aspect, in a possible implementation, the EVM is indicated by at least one of the signalings.

[0039] According to the third aspect, in a possible implementation, the communication unit is further configured to report the amplification gain.

[0040] According to a third aspect, in a possible implementation form, the communication unit is further configured to receive instruction information, which indicates and is used to determine an amplification gain of the signal to be transferred.

[0041] According to a fourth aspect, there is provided a communication device. The communication device includes a communication unit and a processing unit. The processing unit is configured to instruct the communication unit to transmit a measurement signal. The measurement signal is used to determine an amplification gain of a signal to be forwarded. The measurement signal corresponds to the signal to be forwarded. The processing unit is configured to instruct the communication unit to transmit the signal to be forwarded.

[0042] According to a fourth aspect, in a possible implementation, the signal to be forwarded is carried on a time-frequency resource, the time-frequency resource corresponding to the measurement signal, and the processing unit is particularly configured to instruct the communication unit to transmit the signal to be forwarded on the time-frequency resource.

[0043] According to a fourth aspect, in a possible implementation form, the processing unit is further configured to instruct the communication unit to transmit error vector magnitude EVM indication information.

[0044] According to the fourth aspect, in a possible implementation, the measurement signal is indicated using at least one of the following signaling: RRC, MAC-CE, and DCI.

[0045] According to a fourth aspect, in a possible implementation, the EVM is indicated by at least one of the signalings.

[0046] According to the fourth aspect, in a possible implementation, the processing unit is further configured to instruct the communication unit to receive an amplification gain.

[0047] According to a fourth aspect, in a possible implementation form, the processing unit is further configured to instruct the communication unit to send instruction information, the instruction information indicating and being used to determine an amplification gain of the signal to be transferred.

[0048] According to a fifth aspect, the present application provides a communication device. The communication device includes a processor and a memory. The memory includes instructions. When the instructions are executed by the processor, the device is enabled to perform a method described in any one of the first aspect or possible implementations of the first aspect.

[0049] According to a sixth aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium including a computer program or instructions, which, when executed on a computer, enables the computer to perform the method described in the first aspect or any one of the possible implementations of the first aspect.

[0050] According to a seventh aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium including a computer program or instructions, which, when executed on a computer, enables the computer to perform the method described in the second aspect or any one of the possible implementations of the second aspect.

[0051] According to an eighth aspect, the present application provides a computer program product comprising instructions that, when executed on a computer, enable the computer to perform the method described in the first aspect or any one of the possible implementations of the first aspect.

[0052] According to a ninth aspect, the present application provides a computer program product comprising instructions which, when executed on a computer, enable the computer to perform the method described in the second aspect or any one of the possible implementations of the second aspect.

[0053] According to a tenth aspect, the present application provides a computer program product comprising instructions that, when executed on a computer, enable the computer to perform the method described in the first aspect or any one of the possible implementations of the first aspect.

[0054] According to an eleventh aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enable the computer to perform the method described in the second aspect or any one of the possible implementations of the second aspect.

[0055] According to a twelfth aspect, the present application provides a communication system, the communication system including the communication device according to the third aspect and the communication device according to the fourth aspect.

[0056] It should be understood that the description of technical features, technical solutions, beneficial effects, or similar language in this application does not imply that all features and advantages can be implemented in any one embodiment. Conversely, the description of a feature or beneficial effect may be understood to indicate that at least one embodiment includes the particular technical feature, technical solution, or beneficial effect. Thus, the description of a technical feature, technical solution, or beneficial effect in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in an embodiment may be combined in any suitable manner. Those skilled in the art will understand that an embodiment may be implemented without one or more particular technical features, technical solutions, or beneficial effects in a particular embodiment. In other embodiments, additional technical features and beneficial effects may also be identified in a particular embodiment, which does not reflect all embodiments. [Brief explanation of the drawings]

[0057] [Figure 1] 1 is a system architecture diagram of a communication system according to an embodiment of the present application; [Figure 2] 1 is a schematic diagram of the structure of a relay device according to an embodiment of the present application; [Figure 3] 1 is a schematic flowchart of a signal forwarding method according to an embodiment of the present application; [Figure 4] 1 is a schematic flowchart of a signal forwarding method according to an embodiment of the present application; [Figure 5] 1 is a schematic flowchart of a signal forwarding method according to an embodiment of the present application; [Figure 6] 1 is a schematic flowchart of a signal forwarding method according to an embodiment of the present application; [Figure 7] 1 is a schematic diagram of the structure of a communication device according to an embodiment of the present application; [Figure 8] 1 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application; [Figure 9]1 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0058] In the description of this application, unless otherwise specified, " / " means "or." For example, A / B may refer to A or B. The term "and / or" in this specification only describes the correspondence between related objects and indicates that there are three possible relationships. For example, A and / or B may refer to three cases: only A exists, both A and B exist, or only B exists. In addition, "at least one" means one or more, and "multiple" means two or more. Terms such as "first" and "second" do not limit the number and execution order, and terms such as "first" and "second" do not indicate a clear distinction.

[0059] It should be noted that in this application, terms such as "example" or "for example" are used to indicate providing an example, illustration, or explanation. Any embodiment or design scheme described in this application as "example" or "for example" should not be described as being preferred over another embodiment or design scheme, or as having more advantages than another embodiment or design scheme. Strictly speaking, the use of terms such as "example" or "for example" is intended to present relative concepts in a particular way.

[0060] In the description of this application, unless otherwise specified, " / " means "or." For example, A / B may refer to A or B. The term "and / or" in this specification only describes the correspondence between related objects and indicates that there are three possible relationships. For example, A and / or B may refer to three cases: only A exists, both A and B exist, or only B exists. In addition, "at least one" means one or more, and "multiple" means two or more. Terms such as "first" and "second" do not limit the number and execution order, and terms such as "first" and "second" do not indicate a clear distinction.

[0061] It should be noted that in this application, terms such as "example" or "for example" are used to indicate providing an example, illustration, or explanation. Any embodiment or design scheme described in this application as "example" or "for example" should not be described as being preferred over another embodiment or design scheme, or as having more advantages than another embodiment or design scheme. Strictly speaking, the use of terms such as "example" or "for example" is intended to present relative concepts in a particular way.

[0062] The signal forwarding method provided in this embodiment of the present application is used to determine an amplification gain of a signal to be forwarded, in order to amplify and forward the signal to be forwarded.

[0063] It should be noted that in the present application, the gain of a signal may specifically be the gain of the signal power, for example, the amplification gain of a signal may be the amplification power of the signal.

[0064] As shown in Figure 1, the signal forwarding method provided in this embodiment of the present application may be applied to a communication system 100 shown in Figure 1. As shown in Figure 1, the communication system 100 includes an access network device 110, a relay device 120, and a terminal device 130.

[0065] The access network device 110 is configured to transmit downlink signals to the relay device 120 or the terminal device 130. Alternatively, the access network device is configured to receive uplink signals from the relay device 120 or the terminal device 130.

[0066] The relay device 120 is configured to receive a signal to be forwarded, amplify the transmission power of the signal to be forwarded, and forward the amplified signal to be forwarded. For example, the relay device 120 is configured to receive a downlink signal from the access network device 110, amplify the transmission power of the downlink signal, and transmit the amplified downlink signal to the terminal device 130. Alternatively, the relay device 120 is configured to receive an uplink signal from the terminal device 130, amplify the transmission power of the uplink signal, and transmit the amplified uplink signal to the access network device 110.

[0067] The terminal device 130 is configured to receive downlink signals from the access network device 110 or the relay device 120. Alternatively, the terminal device is configured to transmit uplink signals to the access network device 110 or the relay device 120.

[0068] Communication systems in embodiments of the present application include, but are not limited to, long-term evolution (LTE) systems, fifth-generation (5G) systems, new radio (NR) systems, wireless local area networks (WLAN) systems, and future evolved systems or multiple converged communication systems. A 4G system may also be referred to as an evolved packet system (EPS). The core network of a 4G system may also be referred to as an evolved packet core (EPC) network, and the access network may also be referred to as a long-term evolution (LTE) system. The core network of a 5G system may also be referred to as a 5G core (5GC), and the access network may also be referred to as a new radio (NR). For ease of explanation, the present application will be described below using an example in which the present application is applied to a 5G system. However, it will be understood that the present application is also applicable to, but not limited to, a 4G system, a third-generation (3G) system, etc. For example, the method provided in this embodiment of the present application may be specifically applied to evolved-universal terrestrial radio access network (E-UTRAN) and next generation-radio access network (NG-RAN) systems.

[0069] An access network device in an embodiment of the present application is a network-side entity configured to transmit signals, receive signals, or transmit and receive signals. The access network device may be a device deployed in a radio access network (RAN) and providing wireless communication functions to terminals. For example, the access network device may be a transmission reception point (TRP), a base station (e.g., an evolved NodeB (eNB), a next generation node base station (gNB), a next generation eNB (ng-eNB), etc.), various forms of control nodes (e.g., a network controller, a radio controller (e.g., a radio controller in a cloud radio access network (CRAN) scenario), a road side unit (RSU), etc. Specifically, the access network device may be various forms of macro base stations, micro base stations (also called small cells), relay stations, access points (APs), etc., or may be an antenna panel of a base station. The control node may be connected to multiple base stations and configure resources for multiple terminals covered by the multiple base stations. In systems using different radio access technologies (RATs), the name of a device having base station functionality may differ. For example, a base station may be called an eNB or eNodeB in an LTE system, and a gNB in ​​a 5G or NR system. The specific name of the base station is not limited in this application. Alternatively, the access network device may be an access network device in a future evolved public land mobile network (PLMN), etc.

[0070] A terminal device in an embodiment of the present application is a user-side entity configured to receive signals, transmit signals, or receive and transmit signals. The terminal device is configured to provide one or more of voice services and data connection services to a user. The terminal device may also be called user equipment (UE), terminal, access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. The terminal device may be a vehicle-to-everything (V2X) device, such as a smart car (or intelligent car), a digital car, an unmanned car (or driverless car, or pilotless car, or automobile), a self-driving car (or autonomous car), a pure electric vehicle (or battery EV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a new energy vehicle. The terminal device may also be a device-to-device (D2D) device, such as an electricity meter or a water meter.Alternatively, the terminal device may be a mobile station (MS), a subscriber unit, an unmanned aerial vehicle, an internet of things (IoT) device, a station (ST) in a WLAN, a cellular phone, a smartphone, a cordless phone, a wireless data card, a tablet computer, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a laptop computer, a machine type communication (MTC) terminal, a handheld device with wireless communication capabilities, a computing device, another processing device connected to a wireless modem, an in-vehicle device, or a wearable device (which may also be referred to as a wearable intelligent device). Alternatively, the terminal device may be a terminal device of a next-generation communication system, such as a terminal device of a 5G system, a terminal device of a future evolved PLMN, or a terminal device of an NR system.

[0071] To make the present application clearer, some concepts in the present application are first briefly explained.

[0072] 1. Broadcast Relaying is a technique for amplifying a signal and forwarding the amplified signal. The relaying process is performed by a relay device. A relay device generally includes a receiving antenna, a transmitting antenna, and a repeater.

[0073] 2, an embodiment of the present application provides a schematic diagram of the structure of a relay device 200 (e.g., a low-frequency repeater or a low-frequency repeater device). The relay device includes a first antenna 210, a repeater 220, and a second antenna 230.

[0074] The first antenna 210 and the second antenna 230 are configured to receive and transmit signals. The repeater 220 has a signal power amplification circuit configured to perform power amplification on the signals. In this embodiment of the present application, the first antenna 210 and the second antenna 230 may be antennas or antenna arrays, which is not limited in the present application.

[0075] When the relay device forwards a downlink signal, the first antenna 210 is configured to receive the downlink signal from the access network device and transmit the downlink signal to the repeater 220. The repeater 220 is configured to perform power amplification on the downlink signal and transmit the power amplified downlink signal to the second antenna 230. The second antenna 230 is configured to receive the power amplified downlink signal from the repeater 220 and transmit the power amplified downlink signal to the terminal device.

[0076] When the relay device forwards the uplink signal, the second antenna 230 is configured to receive the uplink signal from the terminal device and transmit the uplink signal to the repeater 220. The repeater 220 is configured to perform power amplification on the uplink signal and transmit the power amplified uplink signal to the first antenna 210. The first antenna 210 is configured to receive the power amplified uplink signal from the repeater 220 and transmit the power amplified uplink signal to the access network device.

[0077] When amplifying a signal, the relay device needs to select an appropriate amplification gain for amplifying the signal in order to improve the transmission performance of the signal.

[0078] If the relay device amplifies the downlink signal using an excessively large amplification gain, the components of the relay device may become saturated, degrading the quality of the signal forwarded by the relay device and seriously affecting the forwarding performance of the relay device. In extreme cases, the degradation of signal quality may prevent the terminal device from accurately demodulating the data.

[0079] If the relay device amplifies the downlink signal using an excessively small amplification gain, the power of the signal transferred by the relay device may be relatively low, and the signal-to-noise ratio received by the terminal device may be relatively low, in other words, the coverage improvement capability of the relay device is insufficient.

[0080] The process of the relay device amplifying a signal includes the relay device determining an amplification power of the received signal based on information such as the difference between the target transmission power of the signal and the received power of the signal, and the operational capabilities of the components of the relay device, etc. The relay device amplifies the signal based on the determined amplification power and transmits the amplified signal.

[0081] Current relaying methods mainly include 1.1 amplify-and-forward (AF) relaying and 1.2 decode-and-forward (DF) relaying, which will be described separately below.

[0082] 1.1 AF relay AF relay is a relay technology in which, after receiving a signal from another device, the relay device directly amplifies the signal to be forwarded and forwards the amplified signal to be forwarded.

[0083] In the AF relay process, after receiving a signal, the relay device directly amplifies the signal without analyzing it. Therefore, AF relay has the advantage of low transmission delay. In addition, the AF relay device does not need to analyze the signal. Therefore, the implementation of the AF relay device is simple and the device cost is low.

[0084] It should be noted that in the process of the AF relay amplifying the signal, when the signal is amplified, the noise and interference of the signal are also amplified.

[0085] Currently, AF relay devices include repeaters, radio frequency (RF) relays, layer 1 (L1) relays, L1 integrated access and backhaul (IAB), layer 0 (L0)-IAB, RE-IAB, amplifiers, repeaters, smart repeaters, etc.

[0086] The signal from the other device may be a downlink signal transmitted by an access network device, an uplink signal transmitted by a terminal device, or another type of signal, which is not limited in this application.

[0087] 1.2 DF relay In the decode-and-forward relaying technique, a relay device receives a signal from another device and then decodes the signal. After decoding, the signal is re-encoded. The relay device then forwards the re-encoded signal.

[0088] In the DF relaying process, the relay device decodes the signal and re-encodes the decoded signal, which can eliminate or reduce interference and noise in the signal, thereby avoiding the amplification of interference and noise in the signal and improving the transmission quality of the signal.

[0089] Currently, IAB nodes, UE relays, etc. in new radio (NR) perform signal amplification and forwarding using the DF relay method.

[0090] 2. Beam A beam is a communication resource. The beam may be a wide beam, a narrow beam, or another type of beam. The technology for forming the beam may be beamforming technology or another technical means. Specifically, the beamforming technology may be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology. Different beams may be considered as different resources. The same or different information may be transmitted using different beams. Optionally, multiple beams having the same or similar communication functions may be considered as one beam. One beam may include one or more antenna ports configured to transmit a data channel, a control channel, a sounding signal, etc. For example, a transmit beam may refer to a signal strength distribution formed in different spatial directions after a signal is transmitted using an antenna, and a receive beam may refer to a signal strength distribution of a wireless signal received from an antenna in different spatial directions. It may be understood that one or more antenna ports forming one beam may also be considered as one antenna port set.

[0091] Beams can be classified into transmit beams and receive beams of an access network device, and transmit beams and receive beams of a terminal device. A transmit beam of an access network device is used to describe beamforming information of the transmit side of the access network device. A receive beam of an access network device is used to describe beamforming information of the receive side of the access network device. A transmit beam of a terminal device is used to describe beamforming information of the transmit side of the terminal device. A receive beam of a terminal device is used to describe beamforming information of the receive side of the terminal device. That is, beams are used to describe beamforming information.

[0092] In current NR protocols, beam information may be indicated using an antenna port quasi-colocation (QCL) relationship. Specifically, indication information (e.g., downlink control information (DCI)) may indicate that a QCL relationship exists between one resource (or antenna port) and another resource (or antenna port) to indicate that the beams corresponding to the two resources (or antenna ports) have the same spatial characteristics and the same receive beam can be used for reception. In the protocol, beams may be specifically represented using identifiers of various signals, such as a channel state information reference signal (CSI-RS) resource index, a synchronization signal / physical broadcast channel block (SS / PBCH block) index, a sounding reference signal (SRS) resource index, and a tracking reference signal (TRS) resource index.

[0093] The beam may correspond to one or more of time resources, spatial resources, and frequency domain resources.

[0094] The beam may also correspond to a reference signal resource (e.g., a reference signal resource for beamforming) or beamforming information.

[0095] The beam may further correspond to information associated with a reference signal resource of the access network device. The reference signal may be a CSI-RS, SSB, a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a TRS, etc. The information associated with the reference signal resource may be a reference signal resource identifier, QCL information (especially a type D QCL), etc. The reference signal resource identifier corresponds to a transmit / receive beam pair pre-established during measurements based on the reference signal resource. The terminal device may infer the beam information using an index of the reference signal resource.

[0096] Beams are classified into broadcast beams and unicast beams.

[0097] A broadcast beam is a cell-level beam used by an access network device to transmit a broadcast signal. The broadcast signal may include, but is not limited to, an SS / PBCH block, a system information block (SIB) 1-physical downlink shared channel (PDSCH), a SIB 1-physical downlink control channel (PDCCH), etc. Generally, an access network device transmits a broadcast signal by scanning several (e.g., 8, 16, or 32) pre-designed beams. These beams are used to cover the coverage area of ​​the entire cell.

[0098] A unicast beam is a user-level beam used by an access network device to transmit unicast signals to terminal devices or relay devices. Unicast signals include, but are not limited to, PDSCH, user-level CSI-RS, etc. Because a unicast beam is specific to a particular user, it has a higher beam gain than a broadcast beam.

[0099] 3. QCL related The QCL relationship may also be referred to as a QCL mapping, a QCL correspondence, and a QCL association. When there is a QCL relationship between two signals, at least one of the same delay spread, the same Doppler spread, the same average gain, the same average delay, and the same spatial domain parameters may be selected to transmit or receive the signals, and the same or similar beams may be selected to transmit or receive the signals.

[0100] The QCL-related parameters include at least one of Doppler spread, Doppler frequency shift, average delay, delay spread, and spatial reception parameters. The QCL-related parameters of each downlink reference signal (DL RS) can be determined using the upper layer parameter "QCL-Type" in the QCL info. The QCL-Type includes the following types: 'QCL-TypeA':{Doppler shift, Doppler spread, average delay, delay spread} 'QCL-TypeB':{Doppler shift,Doppler spread} 'QCL-TypeC':{Doppler shift,average delay}, and 'QCL-TypeD':{Spatial Rx parameter}.

[0101] The QCL relationship between the reference signals may be determined by a protocol or configured by an access network device. For example, the access network device may configure the QCL relationship parameter between two reference signal resources as "QCL-Type D" to indicate that there is a correspondence between the spatial reception parameters of the two reference signals received by the UE or relay device.

[0102] 4. CSI-RS The CSI-RS may be used to evaluate received signal quality. The beam may correspond to the CSI-RS resource. The terminal device may determine the reception quality of the CSI-RS resource by measuring and evaluating the CSI-RS resource. The terminal device reports the quality of the CSI-RS resource obtained through the measurement and evaluation to the access network device. The access network device may determine the quality of the beam based on the quality of the CSI-RS resource and the correspondence between the beam and the CSI-RS resource.

[0103] To determine the quality of the beam, the access network device needs to send measurement configuration information to the terminal device. The measurement configuration information mainly includes two parts: resource configuration information and reporting configuration information.

[0104] Resource configuration information is information about measurement resources and is configured in the protocol using a three-level structure (resourceConfig - resourceSet - resource). An access network device may configure one or more resource configurations for a terminal device. Each resource configuration includes one or more resource sets. Each resource set may include one or more resources. Each resource configuration / resource set / resource includes its own index. In addition, some other parameters, such as resource periodicity and the QCL type corresponding to the resource, are also included.

[0105] 5.SSB The SSBs include at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), and may be used for time-frequency tracking, beam management, link monitoring, radio resource measurements, etc.

[0106] The above briefly describes some concepts of embodiments of the present application.

[0107] Referring to the above description of relaying, it can be seen that in the AF relaying process, the relay device can determine the amplification power only after determining the received power of the signal based on the received power of the signal and the target transmission power. Based on this, the relay device needs to measure the received power of the signal after receiving the signal. However, in some current communication networks (e.g., medium frequency and high frequency communication networks), access network devices may transmit downlink signals using different beams and / or different bandwidths. When access network devices transmit downlink signals using different beams and / or bandwidths, the power of the downlink signals received by the relay device is different. The difference in the power of the downlink signals prevents the relay device from selecting an appropriate amplification power for the downlink signals to amplify them.

[0108] In addition, after receiving the downlink signal, the relay device measures the downlink signal to determine the received power of the downlink signal. This process takes a relatively long time (at least the time of several symbols), but the delay requirement for forwarding the signal by the relay device is relatively high (usually at the nanosecond level). When the relay device measures the downlink signal after receiving the downlink signal, the downlink signal may have transmitted one or more symbols after the relay device determines the amplification gain of the downlink signal to measure the amplification power of the downlink signal. As a result, the relay device cannot forward the signal completely.

[0109] To solve the problem in the prior art that a relay device cannot select an appropriate amplification gain or an appropriate amplification power for a downlink signal to amplify the downlink signal, an embodiment of the present application provides a signal forwarding method. After receiving a signal to be forwarded, the relay device amplifies the signal to be forwarded based on the amplification gain of the signal to be forwarded and forwards the amplified signal to be forwarded. The amplification gain is determined by measuring a measurement signal, which corresponds to the signal to be forwarded. Based on this, the relay device determines the amplification gain of the signal to be forwarded by measuring the measurement signal, thereby solving the problem in the prior art that a relay device cannot select an appropriate amplification power for amplifying the downlink signal.

[0110] As shown in FIG. 3, the signal forwarding method provided in this embodiment of the present application includes the following steps:

[0111] S300. The relay device receives a signal to be forwarded.

[0112] The signal to be forwarded is a signal that needs to be received, amplified, and forwarded by the repeater device. The amplification gain of the signal to be forwarded is used to represent the circuit gain and / or array gain that amplifies the signal to be forwarded by the repeater device.

[0113] In a possible implementation, the forwarding signal may be any one of an uplink signal, a downlink signal, or a sidelink signal. In this embodiment of the present application, an example is used for description in which the forwarding signal received by the relay device is a downlink signal sent to the relay device by the access network device.

[0114] When the signal to be forwarded is a downlink signal, the relay device receives the downlink signal from the access network device using a backhaul beam, and forwards the amplified downlink signal to the terminal device using an access beam. The backhaul beam is a beam used by the relay device to receive a signal from the access network device or a beam used by the relay device to transmit a signal to the access network device. The backhaul beam can be determined by beam training. The access beam is a beam used by the relay device to receive a signal from the terminal device or a beam used by the relay device to transmit a signal to the terminal device.

[0115] When the signal to be forwarded is an uplink signal, the relay device receives the uplink signal from the terminal device using an access beam, and the relay device transmits the amplified uplink signal to the access network device using a backhaul beam.

[0116] The amplification gain of the forwarded signal may be determined based on forwarding (or amplification) information of the forwarded signal determined by the relay device, including, but not limited to, amplification and forwarding gain information of the forwarded signal, access beam information of the forwarded signal, and backhaul beam information of the forwarded signal.

[0117] S301. A relay device amplifies a signal to be forwarded based on an amplification gain of the signal to be forwarded, where the amplification gain of the signal to be forwarded is determined by measuring a measurement signal, and the measurement signal corresponds to the signal to be forwarded.

[0118] The measurement signal may be, for example, but not limited to, a signal configured by an access network device for a relay device and used for downlink measurements.

[0119] Optionally, the measurement signal is indicated using at least one signaling message in radio resource control (RRC) signaling, a media access control-control element (MAC-CE), and a DCI.

[0120] Specifically, the relay device amplifies the signal to be forwarded based on the amplification gain, such that the increase value of the power of the signal to be forwarded is the amplification gain value. In implementation, the relay device may perform power amplification on the signal to be forwarded using a component such as a power amplifier.

[0121] In an embodiment of the present application, the forwarded signal and the measurement signal may be the same type of signal. For example, both the forwarded signal and the measurement signal are data signals, or both the forwarded signal and the measurement signal are SSB, or both the forwarded signal and the measurement signal are CSI-RS. Alternatively, the forwarded signal and the measurement signal may be other types of signals. This is not a limitation in the present application.

[0122] In addition, the forwarded signal and the measurement signal may alternatively be signals of different types. For example, the forwarded signal is a CSI-RS and the measurement signal is an SSB. Alternatively, the forwarded signal is an SSB and the measurement signal is a CSI-RS. Alternatively, the forwarded signal is a PDSCH and the measurement signal is a CSI-RS. Alternatively, the forwarded signal is a PDSCH and the measurement signal is an SSB. Alternatively, the forwarded signal and the measurement signal may be signals of other types. This is not a limitation in the present application.

[0123] S302. The relay device forwards the amplified forwarding target signal.

[0124] Based on the above technical solution, an embodiment of the present application provides a signal forwarding method. After receiving a signal to be forwarded, the relay device amplifies the signal to be forwarded based on an amplification gain of the signal to be forwarded, and forwards the amplified signal to be forwarded. The amplification gain is determined by measuring a measurement signal. The measurement signal corresponds to the signal to be forwarded. In this way, the relay device determines the amplification gain of the signal to be forwarded by measuring the measurement signal, thereby solving the problem in the prior art that the relay device cannot select an appropriate amplification power for amplifying a downlink signal.

[0125] In addition, in the signal forwarding method provided in this embodiment of the present application, the relay device may measure the measurement signal in advance to determine the amplification gain of the signal to be forwarded. After receiving the signal to be forwarded, the relay device amplifies the signal to be forwarded based on the amplification gain of the signal to be forwarded and forwards the amplified signal to be forwarded. This can prevent the problem that the relay device cannot completely forward the signal to be forwarded caused by the measurement performed when the signal to be forwarded is received.

[0126] In a possible implementation, the signal to be transmitted is carried on a time-frequency resource, which corresponds to the measurement signal. In this case, referring to FIG. 3, the above-mentioned S300 may be implemented using the following S300a, and the above-mentioned S301 may be implemented using the following S301a, as shown in FIG. 4.

[0127] S300a. A relay device receives a signal carried on a time-frequency resource.

[0128] Specifically, the access network device indicates to the relay device a time-frequency resource, which is used by the access network device to transmit a downlink signal, and the signal received by the relay device on the time-frequency resource is a signal to be forwarded.

[0129] In this case, in addition to the downlink signal transmitted by the access network device on the time-frequency resource, the forwarded signal received by the relay device may further include at least one of interference and noise on the time-frequency resource. In some cases, if the access network does not transmit a downlink signal to the relay device on the time-frequency resource, the signal received by the relay device includes only interference and noise.

[0130] S301a. The relay device determines an amplification gain determined by measuring the measurement signal based on a correspondence between the time-frequency resource and the measurement signal, and amplifies the signal carried on the time-frequency resource based on the amplification gain.

[0131] Specifically, the relay device measures the measurement signal to determine an amplification gain, and associates the amplification gain determined by measuring the measurement signal with the time-frequency resource based on a correspondence between the time-frequency resource and the measurement signal.

[0132] After the time-frequency resource is associated with an amplification gain, the relay device receives the signal to be forwarded on the time-frequency resource and amplifies the signal to be forwarded based on the amplification gain associated with the time-frequency resource.

[0133] The above describes the process by which a relay device receives a signal to be forwarded, amplifies the signal to be forwarded, and forwards the amplified signal to be forwarded.

[0134] The following takes the interaction process between the relay device and the access network device when the relay device forwards the downlink signal as an example to specifically describe the signal forwarding method provided in this embodiment of the present application.

[0135] Referring to FIG. 3, as shown in FIG. 5, before S300, the signal forwarding method provided in this embodiment of the present application includes the following S500 to S503.

[0136] S500. The access network device sends configuration information to the intermediate device. In response, the intermediate device receives configuration information from the access network device. The configuration information is used to configure the measurement signal.

[0137] The following describes separately the measurement signal, the configuration information, and the process by which the access network device uses the configuration information to configure the measurement signal for the relay device.

[0138] (a) Measurement signal The measurement signal is a signal configured by the access network device for the relay device and used to measure the reception quality of a signal transmitted by the access network device. In this embodiment of the present application, the measurement signal may be a reference signal or channel configured by the access network device for the relay device. For example, the measurement signal is a CSI-RS, SSB, etc. configured by the access network device for the relay device. In this case, the relay device may determine the reception quality, e.g., the received signal power, of the signal transmitted by the access network device by measuring the reference signal.

[0139] Alternatively, the measurement signal may be a time domain resource configured by the access network device for the relay device, in which case the relay device receives the signal on the time domain resource and measures the received signal to determine the received power of the signal.

[0140] The access network device may configure multiple measurement signals for the relay device, and the multiple measurement signals may correspond to different signals to be forwarded.

[0141] For example, the access network device configures a first measurement signal and a second measurement signal for the relay device, the first measurement signal corresponding to the first signal to be forwarded, and the second measurement signal corresponding to the second signal to be forwarded.

[0142] In this case, the relay device may measure the first measurement signal to determine the amplification gain of the first signal to be forwarded, and the relay device may measure the second measurement signal to determine the amplification gain of the second signal to be forwarded.

[0143] (b) Configuration information The configuration information is information sent by the access network device to the relay device and used to configure the measurement signal for the relay device. The configuration information includes at least one of the following information: time-domain periodicity, time-domain offset, time-domain duration, transmission configuration indicator (TCI) information, QCL information, and frequency-domain information (bandwidth, frequency-domain density, and frequency-domain location). The QCL information may include at least one of QCL Type A, QCL Type B, QCL Type C, and QCL Type D.

[0144] The access network device may use the configuration information to configure one or more measurement signals for the relay device. For example, the access network device may use the configuration information to configure two measurement signals for the relay device. Alternatively, the access network device may use the configuration information to configure three measurement signals for the relay device. Alternatively, the access network device may use the configuration information to configure four measurement signals for the relay device. Alternatively, the access network device may use the configuration information to configure eight measurement signals for the relay device. The one or more measurement signals may be the same type of measurement signal or may be different types of measurement signals. This is not a limitation in the present application.

[0145] In a possible implementation, the relay device acquires one or more channel and reference signal information, and then the access network device configures or indicates some of the channels or signals as measurement signals. For example, the relay device acquires SSB information and CSI-RS information, including SSB transmission position information, CSI-RS configuration information, etc. The access network device indicates the SSB index and / or CSI-RS identifier to the relay device and configures the corresponding SSB and / or CSI-RS as measurement signals.

[0146] (c) a process by which an access network device uses configuration information to configure a measurement signal for an intermediate device; The access network device may configure the measurement signal for the relay device using one or more signaling messages, including but not limited to RRC, MAC-CE, and DCI.

[0147] The method for configuring a measurement signal for an access network device by sending configuration information to the relay device includes at least the following Example 1 to Example 4.

[0148] Example 1: Configuration information transmitted by an access network device to a relay device is carried in an RRC transmitted by the access network device to the relay device. The RRC includes configuration information of a measurement signal and is specifically used to configure the measurement signal. In a possible implementation, the configuration information of the measurement signal includes index information of an SSB and / or identification information of a CSI-RS.

[0149] Example 2: The configuration information sent by the access network device to the relay device is carried in the MAC-CE sent by the access network device to the relay device. The MAC-CE includes the configuration information of the measurement signal and is specifically used to configure the measurement signal.

[0150] Example 3: Configuration information sent by an access network device to a relay device is carried in RRC. The access network device may configure one or more measurement signals for the relay device using RRC. The one or more measurement signals are inactive measurement signals. The access network device then sends a MAC-CE to the relay device. The MAC-CE is used to wake up the access network device to configure all or part of the one or more measurement signals for the relay device using RRC.

[0151] Example 4: Configuration information sent by an access network device to a relay device is carried in RRC. The access network device may configure one or more measurement signals for the relay device using RRC. The one or more measurement signals are inactive measurement signals. The access network device then sends a MAC-CE to the relay device. The MAC-CE is used to wake up the access network device to configure all or part of the one or more measurement signals for the relay device using RRC. After the access network device activates all or part of the measurement signals using the MAC-CE, the access network device sends a DCI to the relay device. The DCI indicates the measurement signals to be measured. The relay device measures the measurement signals based on the indication of the DCI.

[0152] S501. An access network device transmits a measurement signal, and a relay device correspondingly receives the measurement signal from the access network device.

[0153] In a possible implementation, after receiving the measurement signal, the relay device may amplify the measurement signal so that the terminal device obtains the amplified measurement signal, and forward the amplified measurement signal, in which case the measurement signal is also used as a forwarded signal.

[0154] S502. The repeater device measures the measurement signal to determine the amplification gain.

[0155] The amplification gain may be the amplification gain of the measurement signal.

[0156] In a possible implementation, the relay device measuring the measurement signal to determine the amplification gain includes the following steps 1 and 2.

[0157] Step 1. The repeater device measures the measurement signal to determine the reception quality of the measurement signal. Step 2. The repeater device determines an amplification gain based on the reception quality and the target transmission quality.

[0158] Step 1 and step 2 are described in detail below separately.

[0159] Step 1. The relay device measures the measurement signal to determine the reception quality of the measurement signal.

[0160] The reception quality of the measurement signal determined by the relay device includes at least received power information of the measurement signal. Correspondingly, the measurement of the measurement signal by the relay device can be implemented as the relay device measuring the received power of the measurement signal to determine the received power of the measurement signal.

[0161] The received power information of the measurement signal may be the reference signal receiving power (RSRP) of the measurement signal or the received signal strength indicator (RSSI) of the measurement signal. Alternatively, the received power of the measurement signal may be the full-bandwidth signal received power of the measurement signal determined after the relay device performs a time-domain power measurement on the measurement signal. The type of received power of the measurement signal is not limited in this application.

[0162] Optionally, in the process of the relay device measuring the measurement signal, the relay device may measure the measurement signal based on configuration information sent by the access network device. Alternatively, the relay device may further measure the measurement signal based on a signaling instruction of the access network device. The signaling may be RRC, MAC-CE, or DCI.

[0163] For example, referring to the above-mentioned Example 1, the relay device measures all or part of the measurement signal configured by the access network device using RRC to determine the reception quality of the measurement signal.

[0164] For example, referring to the above-mentioned Example 2, the relay device measures all or part of the measurement signal configured by the access network device using MAC-CE to determine the reception quality of the measurement signal.

[0165] For example, referring to the above Example 3, the relay device measures the measurement signals activated by the MAC-CE to determine the reception quality of the activated measurement signals.

[0166] For example, referring to the above-mentioned Example 4, the relay device measures the measurement signal indicated by the DCI to determine the reception quality of the measurement signal indicated by the DCI.

[0167] Step 2. The relay device determines the amplification gain based on the reception quality and the target transmission quality.

[0168] The target transmission quality determined by the relay device includes at least a target transmission or forwarding power. The target transmission or forwarding power may be determined by the relay device, for example, based on the capabilities of the relay device, or may be indicated to the relay device by the access network device. This is not a limitation in the present application.

[0169] In a possible implementation, the relay device determines a received power and a target transmission or forwarding power of the measurement signal, and determines an amplification gain based on the current capabilities of the relay device and the difference between the target transmission power and the received power of the measurement signal.

[0170] Optionally, the amplification gain determined by the repeater device is the difference between the target transmit power and the received power of the measurement signal.

[0171] In one example, the relay device may measure a signal whose received power is P R When the amplification gain used by the repeater device is G, the power at which the repeater device transfers the measurement signal is P T =P R +G. The relay device has a target transmit power of TP T It is determined that the value of G is P T =TP T When , the value of G is the amplification gain of the measurement signal determined by the relay device. It should be understood that the capability of the relay device further includes a maximum amplification or transfer gain, and the amplification gain determined by the relay device should not exceed the maximum amplification gain.

[0172] In a possible implementation, the relay device includes one or more error vector magnitude (EVM) indicators. The EVM represents the error between a signal received by the relay device and a signal forwarded by the relay device. The EVM indicates signal forwarding quality. A lower EVM indicates better signal forwarding quality. For different EVM indicators, the maximum forwarding power or maximum transmission power corresponding to forwarding of the relay device may be different. For example, when the EVM indicator is low, the relay device needs more power backoff to ensure signal quality, and the corresponding forwarding power or amplification gain is low. When the EVM indicator is high, the relay device needs less power backoff, and the corresponding forwarding power or amplification gain is high.

[0173] In one example, the correspondence between the EVM indicator and the forwarding or transmitting power of the relay device is shown in Table 1 below.

[0174] [Table 1]

[0175] Table 1 shows examples of the transmit power information of the repeater device under different EVM indicators. The transmit power information may be provided directly using the absolute value of the transmit power (the unit of which may be dBm) or may be provided using the offset value of the transmit power.

[0176] In this case, the relay device determines the amplification gain based on the reception quality corresponding to the EVM and the target transmission quality.

[0177] The repeater device determines different amplification gains when the target transmission quality corresponding to the EVM is different.

[0178] Specifically, the relay device determines that the measured signal corresponds to a first EVM and a second EVM.

[0179] The relay device determines a target transmission or forwarding power corresponding to the received power of the measurement signal and the first EVM, and determines an amplification gain corresponding to the first EVM based on a current capability of the relay device and a difference between the target transmission power corresponding to the first EVM and the received power of the measurement signal.

[0180] The relay device determines a target transmission or forwarding power corresponding to the received power of the measurement signal and the second EVM, and determines an amplification gain corresponding to the second EVM based on a current capability of the relay device and a difference between the target transmission power corresponding to the second EVM and the received power of the measurement signal.

[0181] S503. The relay device determines the amplification gain of the signal to be forwarded based on the amplification gain.

[0182] In this step, the relay device and the access network device may determine the amplification gain of the signal to be forwarded in the manner described in Case 1 and Case 2 below.

[0183] Case 1: The relay device determines the amplification gain of the signal to be forwarded based on the correspondence between the signal to be forwarded indicated by the access network device and the measurement signal, as well as the aforementioned amplification gain.

[0184] Case 2: The intermediate device reports the amplification gain to the access network device. The access network device determines the amplification gain of the signal to be forwarded based on the amplification gain, and indicates the amplification gain of the signal to be forwarded to the intermediate device.

[0185] Case 1 and Case 2 are described separately in detail below.

[0186] Case 1: The relay device determines the amplification gain of the signal to be forwarded based on the correspondence between the signal to be forwarded indicated by the access network device and the measurement signal, as well as the aforementioned amplification gain.

[0187] Referring to FIG. 5, in case 1, as shown in FIG. 6, S503 can be specifically implemented using the following S600 and S601.

[0188] S600. The access network device indicates to the intermediate device the correspondence between the signal to be forwarded and the measurement signal.

[0189] The relay device may determine a measurement signal corresponding to the signal to be forwarded based on the correspondence relationship, and may amplify the signal to be forwarded based on the measurement signal corresponding to the signal to be forwarded and forward the amplified signal to be forwarded.

[0190] Optionally, when the relay device includes an EVM, the access network device may further indicate a target EVM to the relay device. Thus, the relay device determines an amplification gain of the signal to be forwarded based on the correspondence between the signal to be forwarded and the measured signal and the target EVM. The access network device may indicate the target EVM using at least one of RRC, MAC-CE, or DCI.

[0191] In this step, the relay device may indicate the correspondence between the forwarding target signal and the measurement signal to the relay device in the following two ways, namely, method a and method b.

[0192] Method a: The access network device uses a semi-static signaling message to indicate to the relay device the correspondence between the signal to be forwarded and the measurement signal.

[0193] In this case, the access network device may indicate the correspondence between the forwarding target signal and the measurement signal to the relay device in the form shown in Table 2.

[0194] [Table 2]

[0195] The resource / signal / channel to be transferred is information about the signal to be transferred (e.g., transmission resource information of the signal to be transferred, signal information of the signal to be transferred, or channel information of the signal to be transferred). The transfer gain information is information about the measurement signal corresponding to the signal to be transferred (the signal to be transferred may be specifically represented in the form of a resource, a signal, or a channel) (e.g., an identifier of the measurement resource). The additional information is optional information. When there is an offset between the amplification gain of the signal to be transferred and the amplification gain of the measurement resource, the configuration information may indicate the offset between the amplification gain of the signal to be transferred and the amplification gain of the measurement resource based on the additional information.

[0196] It should be noted that resources / signals / channels include, but are not limited to, SS / PBCH blocks, SIB1-PDSCH (PDSCH carrying SIB1), SIB1-PDCCH (PDCCH carrying SIB1-PDSCH), CSI-RS, TRS (CSI-RS for tracking), broadcast PDCCH, broadcast PDSCH, periodic or semi-persistent slots or subframes.

[0197] In a possible implementation, when the access network device separately indicates to the relay device the correspondence between the signal to be forwarded and the measurement signal and the target EVM, the relay device may indicate to the relay device the correspondence between the signal to be forwarded and the measurement signal, as well as the target EVM of the signal to be forwarded, in the form shown in Table 3.

[0198] [Table 3]

[0199] The target EVM is the EVM of the measured or forwarded signal as indicated by the access network device.

[0200] Method b: The access network device may use a dynamically transmitted signaling message to indicate to the relay device the correspondence between the signal to be forwarded and the measurement signal.

[0201] The dynamically transmitted signaling message may be a MAC-CE or DCI transmitted by an access network device, which is not limited in this application.

[0202] In this case, the access network device may dynamically indicate to the relay device using MAC-CE or DCI the correspondence between one or more time-frequency resources and the measurement signal.

[0203] For example, the access network device uses MAC-CE or DCI to indicate at least one of an identifier and an offset of a measurement resource corresponding to a signal to be forwarded transmitted in a particular slot.

[0204] In scheme b, when the access network device separately indicates the correspondence between the signals to be forwarded and the measurement signals and the target EVM to the relay device, the access network device may further separately indicate the correspondence between the signals to be forwarded and the measurement signals and the target EVM to the relay device based on the DCI. Alternatively, the access network device may separately indicate the correspondence between the signals to be forwarded and the measurement signals and the target EVM to the relay device based on the MAC-CE.

[0205] It should be noted that in Case 1, after the relay device measures the measurement signal to determine the amplification gain, the relay device may also perform S602 in Case 2 below to report the amplification gain to the access network device.

[0206] S601. An access network device determines an amplification gain of a signal to be forwarded based on a correspondence relationship between the signal to be forwarded and a measurement signal, and the amplification gain.

[0207] It should be noted that when the signal to be forwarded is carried on a time-frequency resource and the time-frequency resource corresponds to a measurement signal, the access network device determines a correspondence between the time-frequency resource and the measurement signal, and associates the amplification gain determined by measuring the measurement signal with the time-frequency resource.

[0208] Then, after receiving the signal to be forwarded on the time-frequency resource, the access network device amplifies the signal to be forwarded based on an amplification gain associated with the time-frequency resource.

[0209] In a possible implementation, the relay device determines that the amplification gain of the measurement signal corresponding to the signal to be forwarded is the same as the amplification gain of the signal to be forwarded. For example, if the signal to be forwarded and the measurement signal have the same beam and bandwidth, and the relay device determines that the value of the amplification gain of the measurement signal corresponding to the signal to be forwarded is 10 dB, the relay device determines that the value corresponding to the amplification gain of the signal to be forwarded is 10 dB. In this case, the relay device may assume that the signal to be forwarded and the measurement signal have the same beam and bandwidth. Therefore, the relay device may forward the signal to be forwarded using the amplification gain determined by the measurement signal.

[0210] In another possible implementation, the relay device calculates and determines the amplification gain of the signal to be forwarded based on the amplification gain of a measurement signal corresponding to the signal to be forwarded. For example, if the relay device determines that the amplification gain value of the measurement signal corresponding to the signal to be forwarded is 10 dB and the relay device determines that the offset between the amplification gain of the measurement signal corresponding to the signal to be forwarded and the amplification gain of the signal to be forwarded is −2 dB, the relay device determines that the amplification gain value of the signal to be forwarded is 10 dB−2 dB=8 dB. The offset value may be defined by a protocol or configured or indicated by an access network device.

[0211] Optionally, the relay device may assume a fixed relationship between the beam and bandwidth of the signal to be forwarded and the beam and bandwidth of the measurement signal. For example, the beams of the signal to be forwarded and the measurement signal are the same, but the bandwidths of the signal to be forwarded and the measurement signal have a fixed difference. In this case, the relay device may use the amplification gain determined by the measurement signal to assume an additional offset for forwarding the signal to be forwarded.

[0212] In yet another possible implementation, the repeater device determines that the amplification gain of the measurement signal corresponding to the signal to be forwarded within the target EVM is the same as the amplification gain of the signal to be forwarded within the target EVM. For example, if the signal to be forwarded and the measurement signal have the same beam and bandwidth, and the repeater device determines that the amplification gain of the measurement signal corresponding to the signal to be forwarded within the target EVM is 10 dB, the repeater device determines that the value corresponding to the amplification gain of the signal to be forwarded within the target EVM is 10 dB.

[0213] In yet another possible implementation, the relay device calculates and determines the amplification gain of the signal to be forwarded within the target EVM based on the amplification gain of the measurement signal corresponding to the signal to be forwarded within the target EVM. For example, if the relay device determines that the value of the amplification gain of the measurement signal corresponding to the signal to be forwarded within the target EVM is 10 dB, and the relay device determines that the offset between the amplification gain of the measurement signal corresponding to the signal to be forwarded within the target EVM and the amplification gain of the signal to be forwarded within the target EVM is −2 dB, the relay device determines that the value of the amplification gain of the signal to be forwarded within the target EVM is 10 dB−2 dB=8 dB. Optionally, the EVM of the signal to be forwarded and the EVM of the measurement signal may be the same or different.

[0214] It should be noted that the access network device may indicate the correspondence relationship between the forwarding target signal and the measurement signal to the relay device in scheme a and scheme b, respectively. The correspondence relationship between the forwarding target signal and the measurement signal indicated by the access network device in scheme a and scheme b may be different.

[0215] In this case, the relay device may separately set different priorities for the methods a and b. When the relay device separately determines the amplification gain of the signal to be forwarded based on the correspondence relationship indicated by the method a and the correspondence relationship indicated by the method b, the relay device amplifies the signal to be forwarded using the amplification gain determined with the higher priority and forwards the amplified signal to be forwarded.

[0216] For example, the relay device determines that the priority of scheme b is higher than the priority of scheme a. In this case, when the relay device separately determines the amplification gain of the signal to be forwarded based on the correspondence relationship indicated by scheme a and the correspondence relationship indicated by scheme b, the relay device amplifies the signal to be forwarded using the amplification gain of the signal to be forwarded determined based on the correspondence relationship indicated by scheme b, and forwards the amplified signal to be forwarded.

[0217] Case 2: The access network device commands the amplification gain, and the relay device determines the amplification gain of the signal to be forwarded based on the command of the access network device.

[0218] Referring to FIG. 5, in Case 2, as shown in FIG. 6, S503 can be specifically implemented using the following S602 to S605.

[0219] S602. The relay device reports an amplification gain to the access network device, and in response, the access network device receives the amplification gain from the relay device.

[0220] It should be noted that in addition to the amplification gain of the measurement signal, the information reported by the relay device to the access network device may further include at least one of the following parameters: received power of the measurement signal, target forwarding power, amplification power headroom of the relay device, maximum amplification gain of the relay device, current amplification gain of the relay device, etc. This is not limited to this embodiment of the present application.

[0221] The received power of the measurement signal is the received power of the measurement signal determined by the relay device after the relay device measures the measurement signal, for example, the RSRP or RSRI of the measurement signal.

[0222] The target transmit power is the transmit power that the relay device expects to reach during the period when it is forwarding a signal (measurement signal or signal to be forwarded). Different types of signals to be forwarded may have different target transmit powers. Optionally, the target transmit power is the maximum transmit or transmit power that can be reached by the relay device. It should be understood that the maximum transmit or transmit power must meet a certain EVM indicator.

[0223] The maximum amplification gain of the repeater device is the maximum value of the amplified power that can be reached when the repeater device performs power amplification.

[0224] The amplification power headroom of the relay device is equal to the difference between the maximum amplification power of the relay device and the amplification power of the measured signal reported by the relay device. When the amplification power headroom of the relay device is greater than 0, the relay device may amplify the signal to be forwarded up to the target transmission power. If the amplification gain of the signal to be forwarded still cannot reach the optimal amplification power after the relay device performs power amplification on the signal to be forwarded using the maximum amplification gain, the power headroom may be defined as a negative number indicating that the optimal amplification gain is greater than the maximum amplification gain of the relay device, or the relay device cannot amplify the signal to be forwarded up to the target transmission power.

[0225] After obtaining the power amplification headroom of the relay device, the access network device may adjust the transmission signal to improve signal propagation efficiency. For example, when the power amplification headroom of the access network device in the relay device is greater than a preset value, the access network device transmits the signal to be forwarded using low transmission power, and the relay device performs high-power amplification on the signal to be forwarded, thereby reducing the power consumption of the access network device. When the power amplification headroom of the access network device in the relay device is equal to or less than the preset value, the access network device transmits the signal to be forwarded using high transmission power, and the relay device performs high-power power amplification on the signal to be forwarded to avoid signal transmission damage caused by insufficient amplification power of the relay device. Optionally, the access network device may adjust the transmission power by selecting the quality of the antenna array plane for transmitting signals to the relay device.

[0226] It should be noted that when the access network device adjusts the transmission power of the forwarded signal, the value of the amplification gain of the forwarded signal determined by the relay device also needs to be adjusted accordingly.

[0227] The current amplification gain of a repeater device is the value of the amplification gain currently being used by the repeater device to forward a signal.

[0228] It should be noted that when the relay device includes one or more EVMs, the one or more EVMs correspond to different amplification gains (e.g., the forwarded signal corresponds to different amplification gains at different EVMs, and the measurement signal corresponds to different amplification gains at different EVMs). The relay device may further transmit the amplification gains corresponding to all or part of the one or more EVMs to the access network device.

[0229] The relay device may report an amplification gain to the access network device based on one or more predetermined EVM indicators. For example, the relay device may report an amplification gain for another EVM based on a specific EVM amplification gain. The gain for another EVM reported by the relay device may be an offset of the amplification gain for the other EVM relative to the specific EVM amplification gain.

[0230] S603. The access network device determines an amplification gain for the signal to be forwarded based on the amplification gain.

[0231] In a possible implementation, the value of the amplification gain of the measured signal reported by the relay device to the access network device is the same as the value of the amplification gain of the signal to be forwarded indicated by the indication information generated by the access network device.

[0232] For example, if the relay device determines that the amplification gain value of the measurement signal is 10 dB, the amplification gain value of the measurement signal reported by the relay device to the access network device is 10 dB, and the amplification gain value of the signal to be forwarded indicated by the instruction information generated by the access network device is also 10 dB.

[0233] In another possible implementation, the amplification gain of the signal to be forwarded indicated by the indication information generated by the access network device is calculated and determined by the relay device based on the amplification gain value of the measurement signal reported by the access network device. In this case, the amplification gain value of the measurement signal reported by the relay device to the access network device is merely a recommended value, and the access network device can flexibly determine the amplification gain value of the signal to be forwarded indicated by the indication information based on this value.

[0234] For example, if the relay device determines that the value of the amplification gain of the measurement signal is 10 dB, the value of the amplification gain of the measurement signal reported by the relay device to the access network device is 10 dB, and the access network device determines that there is an offset of 2 dB between the amplification gain of the signal to be forwarded and the amplification gain of the measurement signal, and the value of the amplification gain of the signal to be forwarded indicated by the instruction information generated by the access network device is 8 dB.

[0235] In a possible implementation, the access network device determines the offset based on the transmit power difference between the signal to be forwarded and the measurement signal. For example, the access network device transmits the measurement signal using power X dBm and transmits the signal to be forwarded using power X+3 dBm. The amplification gain indicated by the access network device to the relay device may be 3 dB less than the amplification gain reported by the relay device to ensure that the relay device obtains the same transmit or forward power after amplifying the signal to be forwarded and the measurement signal.

[0236] It should be noted that if the relay device includes one or more EVMs, the relay device may separately determine amplification gains corresponding to different EVMs when measuring the measurement signal. When the access network device receives the amplification gains corresponding to different EVMs reported by the relay device, the access network device determines the amplification gain of the signal to be forwarded based on the EVM of the signal to be forwarded and the amplification gains corresponding to each EVM.

[0237] Specifically, the access network device determining the amplification gain of the signal to be forwarded based on the amplification gain may be the access network device determining the amplification gain of the signal to be forwarded based on the amplification gain and the EVM corresponding to the signal to be forwarded.

[0238] S604. The access network device sends indication information to the relay device, and in response, the relay device receives indication information from the access network device.

[0239] The indication information indicates an amplification gain of the signal to be forwarded. The indication information may be carried in a DCI sent by the access network device to the relay device. Alternatively, the indication information may be carried in a MAC-CE sent by the access network device to the relay device.

[0240] In a possible implementation, the indication information is used to directly indicate the amplification gain of the signal to be transferred, for example, the indication information indicates that the amplification gain of the signal to be transferred is 10 dB.

[0241] In another possible implementation, the instruction information indicates an offset value of the amplification gain of the signal to be transferred relative to a reference value. The reference value may be the amplification gain of a specific measurement signal (denoted as a standard measurement signal). In this case, the instruction information may indicate the offset value and an identifier of the standard measurement signal.

[0242] For example, if the amplification gain of the standard measurement signal is 8 dB and the offset value indicated by the instruction information is 2 dB, the relay device determines that the amplification gain of the signal to be forwarded is 10 dB.

[0243] S605: The relay device determines the amplification gain of the signal to be forwarded based on the instruction information.

[0244] Specifically, the relay device uses the amplification gain value indicated by the instruction information as the amplification gain of the signal to be transferred.

[0245] It should be noted that in S503, the relay device may determine the amplification gain of the signal to be forwarded in the manner described in any one of Case 1 and Case 2 above.

[0246] Alternatively, the relay device may separately determine the amplification gain of the signal to be forwarded using the methods described in Case 1 and Case 2 above. For example, the relay device may determine the amplification gain of a signal or channel such as SSB or CSI-RS using the method in Case 1, but may determine the amplification gain within a specific slot, subarray, symbol, or symbol set using the method in Case 2. The amplification gains of the signal to be forwarded determined by the relay device in different cases have different priorities. The relay device determines the final amplification gain of the signal to be forwarded based on the priorities of the amplification gains of the signal to be forwarded determined in different cases.

[0247] For example, the relay device determines the priority of the amplification gain of the signal to be forwarded using Case 1 and Case 2 in descending order of Case 1 > Case 2. After separately determining the amplification gain of the signal to be forwarded in the different cases, the relay device amplifies the signal to be forwarded based on the amplification gain determined in Case 1.

[0248] Based on the above technical solution, when there are multiple types of signals to be forwarded, the access network device can configure a measurement signal for the relay device corresponding to the type of the signals to be forwarded, and determine the amplification gain of the signals to be forwarded based on the measurement signal and the correspondence between the measurement signal and the signals to be forwarded. Therefore, the method recorded in this application can be applied to a scenario in which multiple types of signals to be forwarded are transmitted between the access network device and the relay device.

[0249] The solutions of the above embodiments of the present application can be combined without contradiction.

[0250] The above describes the solutions of the embodiments of the present application mainly from the perspective of interactions between network elements. It can be understood that to implement the aforementioned functions, each network element, such as an access network device and a relay device, includes at least one of a corresponding hardware structure and a software module for performing each function. Based on the example units and algorithm steps described with reference to the embodiments disclosed in the present application, those skilled in the art will easily understand that the present application can be implemented through the hardware of the present application or a combination of hardware and computer software. Whether the functions are performed by hardware or by hardware driven by computer software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementations should not be considered to exceed the scope of the present application.

[0251] In the embodiments of the present application, the access network device and the relay device may be divided into functional units based on the above-mentioned exemplary method. For example, each functional unit may be obtained by dividing the functional units based on their corresponding functions, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware or a software functional unit. Note that in the embodiments of the present application, the division into units is merely an example and is merely a logical division of functions. In actual implementation, other division methods may be used.

[0252] When an integrated unit is used, Figure 7 is a possible schematic diagram of the structure of a communication device (denoted as communication device 70) in the aforementioned embodiment. The communication device 70 includes a processing unit 701 and a communication unit 702, and may further include a storage unit 703. The structural schematic diagram shown in Figure 7 can be used to illustrate the structures of the access network device and the relay device in the aforementioned embodiment.

[0253] 7 is used to illustrate the structure of the access network device in the aforementioned embodiments, the processing unit 701 is configured to control and manage the operation of the access network device, for example, to control the access network device to perform operations performed by the access network device in S500, S501, and S300 of FIG. 5, S500, S501, S600, S602, S604, and S300 of FIG. 6, and / or other processes described in the embodiments of the present application. The processing unit 701 may use the communication unit 702 to communicate with another network entity, for example, the access network device shown in FIG. 1. The storage unit 703 is configured to store program codes and data of the access network device.

[0254] When the schematic diagram of the configuration shown in Figure 7 is used to illustrate the structure of the access network device in the above embodiment, the communication device 70 may be the access network device or may be a chip within the access network device.

[0255] 7 is used to illustrate the structure of the relay device in the aforementioned embodiments, the processing unit 701 is configured to control and manage the operation of the relay device, for example, to control the relay device to perform operations performed by the relay device in steps S300 to S302 of FIG. 3, steps S300a, S301a, and S302 of FIG. 4, steps S500 to S503 and S300 to S302 of FIG. 5, and steps S500 to S502, S600, S601, S602, S604, S605, and S300 to S302 of FIG. 6, and / or other processes described in the embodiments of the present application. The processing unit 701 may communicate with another network entity, for example, the relay device shown in FIG. 1, using the communication unit 702. The storage unit 703 is configured to store program codes and data of the relay device.

[0256] When the structural schematic diagram shown in FIG. 7 is used to illustrate the structure of the relay device of the aforementioned embodiment, the communication device 70 may be the relay device or may be a chip within the relay device.

[0257] When the communication device 70 is an intermediate device or an access network device, the processing unit 701 may be a processor or a controller, and the communication unit 702 may be a communication interface, a transceiver, a transceiver machine, a transceiver circuit, a transceiver device, etc. The communication interface is a general term and may include one or more interfaces. The storage unit 703 may be a memory. When the communication device 70 is a chip within the intermediate device or the access network device, the processing unit 701 may be a processor or a controller, and the communication unit 702 may be an input interface and / or an output interface, a pin, a circuit, etc. The storage unit 703 may be a storage unit within the chip (e.g., a register or a cache), or may be a storage unit located within the intermediate device or the access network device but external to the chip (e.g., a read-only memory (ROM), a random access memory (RAM), etc.).

[0258] The communication unit may also be referred to as a transceiver unit. An antenna and a control circuit having receiving and transmitting functions in the communication device 70 may be regarded as a communication unit 702 in the communication device 70. A processor having a processing function in the communication device 70 may be regarded as a processing unit 701 in the communication device 70. Optionally, a component configured to perform a receiving function in the communication unit 702 may be regarded as a receiving unit. The receiving unit is configured to perform the receiving step in the embodiments of the present application. The receiving unit may be a receiver machine, a receiver, a receiver circuit, or the like.

[0259] When the integrated unit in FIG. 7 is implemented in the form of a software functional module and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application may essentially be implemented in the form of a software product, or the portion that contributes to the prior art may be implemented in whole or in part. The computer software product is stored in a storage medium and includes instructions for instructing a computer device (which may be a personal computer, a server, a network device, etc.) or a processor to perform all or part of the steps of the method described in the embodiments of the present application. The storage medium for storing the computer software product includes any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory, a random-access memory, a magnetic disk, or an optical disk.

[0260] 7 may be referred to as modules. For example, a processing unit may be referred to as a processing module.

[0261] An embodiment of the present application further provides a schematic diagram of a hardware structure of a communication device (denoted as communication device 80). Referring to Fig. 8 or 9, the communication device 80 includes a processor 801 and optionally also includes a memory 802 connected to the processor 801.

[0262] In a first possible implementation, see FIG. 8. The communication device 80 further includes a transceiver 803. The processor 801, the memory 802, and the transceiver 803 are connected using a bus. The transceiver 803 is configured to communicate with another device or a communication network. Optionally, the transceiver 803 may include a transmitter and a receiver. A component configured to perform a receiving function in the transceiver 803 may be considered a receiver. The receiver is configured to perform the receiving step in the embodiments of the present application. A component configured to perform a transmitting function in the transceiver 803 may be considered a transmitter. The transmitter is configured to perform the transmitting step in the embodiments of the present application.

[0263] Based on a first possible implementation, the structural schematic diagram shown in FIG. 8 can be used to illustrate the structure of the access network device or relay device of the foregoing embodiment.

[0264] When the structural schematic diagram shown in Figure 8 is used to illustrate the structure of the access network device of the aforementioned embodiment, the processor 801 is configured to control and manage the operation of the access network device. For example, the processor 801 is configured to assist the access network device in executing operations performed by the access network device in S500, S501, and S300 of Figure 5, S500, S501, S600, S602, S604, and S300 of Figure 6, and / or other processes described in the embodiments of the present application. The processor 801 may communicate with another network entity via the transceiver 803, or may communicate with the relay device shown in Figure 1. The memory 802 is configured to store program codes and data of the access network device.

[0265] When the structural schematic diagram shown in FIG. 8 is used to illustrate the structure of the relay device of the aforementioned embodiment, the processor 801 is configured to control and manage the operation of the relay device. For example, the processor 801 is configured to assist the relay device in executing operations performed by the relay device in S300 to S302 of FIG. 3, S300a, S301a, and S302 of FIG. 4, S500 to S503 and S300 to S302 of FIG. 5, S500 to S502, S600, S601, S602, S604, S605, and S300 to S302 of FIG. 6, and / or other processes described in the embodiments of the present application. The processor 801 may communicate with another network entity using the transceiver 803, for example, with the access network device shown in FIG. 1. The memory 802 is configured to store program codes and data of the relay device.

[0266] In a second possible implementation, the processor 801 includes a logic circuit and at least one of an input interface and an output interface, the output interface being configured to perform a transmitting operation of the corresponding method, and the input interface being configured to perform a receiving operation of the corresponding method.

[0267] Based on a second possible implementation, please refer to Figure 9. The structural schematic diagram shown in Figure 9 can be used to illustrate the structure of an access network device or a relay device in the aforementioned embodiment.

[0268] 9 is used to illustrate the structure of the access network device in the aforementioned embodiments, the processor 801 is configured to control and manage the operation of the access network device. For example, the processor 801 is configured to assist the access network device in executing operations performed by the access network device in S500, S501, and S300 of FIG. 5, S500, S501, S600, S602, S604, and S300 of FIG. 6, and / or other processes described in the embodiments of the present application. The processor 801 may index at least one of an input interface and an output interface to communicate with another network entity, for example, to communicate with the relay device shown in FIG. 1. The memory 802 is configured to store program codes and data of the access network device.

[0269] When the structural schematic diagram shown in FIG. 9 is used to illustrate the structure of the relay device of the aforementioned embodiment, the processor 801 is configured to control and manage the operation of the relay device. For example, the processor 801 is configured to assist the relay device in executing operations performed by the relay device in S300 to S302 of FIG. 3, S300a, S301a, and S302 of FIG. 4, S500 to S503 and S300 to S302 of FIG. 5, S500 to S502, S600, S601, S602, S604, S605, and S300 to S302 of FIG. 6, and / or other processes described in the embodiments of the present application. The processor 801 may communicate with another network entity, for example, the access network device shown in FIG. 1, using at least one of the input interface and the output interface. The memory 802 is configured to store program codes and data of the relay device.

[0270] 8 and 9 may also show a system chip in a relay device. In this case, the operations performed by the relay device may be implemented by the system chip. For the specific operations performed, please refer to the above description. Details will not be described again here. 8 and 9 may also show a system chip in an access network device. In this case, the operations performed by the access network device may be implemented by the system chip. For the specific operations performed, please refer to the above description. Details will not be described again here.

[0271] In one implementation process, the steps of the method provided in this embodiment can be completed using integrated logic circuits of hardware in a processor, or instructions in the form of software. The steps of the method disclosed with reference to the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented using a combination of hardware and software modules in a processor.

[0272] A processor in this application may include at least one of the following types of computing devices used to execute software, such as, but not limited to, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or an artificial intelligence processor. Each computing device may include one or more cores used to execute software instructions to perform an operation or process. A processor may be an independent semiconductor chip or may be integrated with other circuits to form a semiconductor chip. For example, a processor may form a system-on-chip (SoC) together with other circuits (e.g., codec circuits, hardware acceleration circuits, or various bus and interface circuits). Alternatively, a processor may be integrated into an ASIC as an embedded processor of the ASIC. An ASIC integrated with a processor may be packaged separately or together with other circuits. In addition to cores configured to execute software instructions to perform operations or processes, a processor may further include necessary hardware accelerators, such as field programmable gate arrays (FPGAs), programmable logic devices (PLDs), or logic circuitry for implementing dedicated logic operations.

[0273] The memory in this embodiment of the present application may include at least one of the following types: read-only memory (ROM) or another type of static storage device capable of storing static information and instructions; random access memory (RAM) or another type of dynamic storage device capable of storing information and instructions; or electrically erasable programmable-only memory (EEPROM). In some scenarios, the memory may alternatively be a compact disc read-only memory (CD-ROM) or another compact disc storage medium, an optical disc storage medium (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disc storage medium or another magnetic storage device, or any other medium that can be configured to carry or store expected program code in the form of instructions or data structures and that can be accessed by a computer. However, the memory is not limited thereto.

[0274] An embodiment of the present application further provides a computer-readable storage medium containing instructions, which when executed on a computer, enable the computer to perform any one of the methods described above.

[0275] An embodiment of the present application further provides a computer program product comprising instructions, which when executed on a computer, enable the computer to perform any one of the methods described above.

[0276] An embodiment of the present application further provides a communication system, including the aforementioned access network device and the aforementioned relay device.

[0277] An embodiment of the present application further provides a chip, the chip including a processor and an interface circuit, the interface circuit coupled to the processor, the processor configured to execute a computer program or instructions to implement the aforementioned method, and the interface circuit configured to communicate with another module other than the chip.

[0278] All or part of the above-described embodiments may be implemented by software, hardware, firmware, or any combination thereof. When a software program is used to implement the embodiments, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded into a computer and executed, all or part of the procedures or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, or digital subscriber line (DSL)) or wireless (e.g., infrared, radio, or microwave) transmission. The computer-readable storage medium may be any available medium that can be accessed by a computer, or may be a data storage device that integrates one or more available media, such as a server or a data center. The available media may be magnetic media (e.g., floppy disks, hard disks, or magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

[0279] Although the present application has been described with reference to embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by studying the accompanying drawings, the disclosed content, and the appended claims. In the claims, "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may perform several functions recited in the claims. Although some means are recited in mutually different dependent claims, this does not mean that these means cannot be combined to produce better effects.

[0280] Although the present application has been described with reference to specific features and embodiments thereof, it is clear that various modifications and combinations can be made to the present application without departing from the spirit and scope of the present application. Correspondingly, this specification and the accompanying drawings are merely exemplary descriptions of the present application as defined by the appended claims, and any and all modifications, variations, combinations, or equivalents encompassing the scope of the present application are to be considered. Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. The present application is intended to cover these modifications and variations of the present application, provided that they fall within the scope of protection defined by the appended claims and their equivalent technologies.

[0281] In conclusion, the above description is merely a specific implementation form of the present application and is not intended to limit the protection scope of the present application. Any modifications or replacements within the technical scope disclosed in the present application shall fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. [Explanation of symbols]

[0282] 70 Communication equipment 80 Communication equipment 100 Communication Systems 110 Access Network Devices 120 Relay Devices 130 Terminal Devices 200 Intermediate Devices 210 First Antenna 220 Repeater 230 Second Antenna 701 Processing Unit 702 Communication Unit 703 Storage Unit 801 processor 802 memory 803 Transceiver

Claims

1. receiving a signal to be forwarded carried on a time-frequency resource; amplifying the signal to be transferred based on an amplification gain of the signal to be transferred, wherein the amplification gain of the signal to be transferred is determined by measuring a measurement signal, the measurement signal corresponds to the signal to be transferred, the time-frequency resource corresponds to the measurement signal, and the amplification gain is determined based on a correspondence between the time-frequency resource and the measurement signal; transferring the amplified signal to be transferred; A signal transfer method comprising:

2. receiving the measurement signal and measuring the measurement signal to determine the amplification gain; The method of claim 1 further comprising:

3. said step of measuring said measurement signal to determine said amplification gain further comprising: measuring said measurement signal to determine reception quality; determining the amplification gain based on the reception quality and a target transmission quality; 3. The method of claim 2, comprising:

4. determining the amplification gain based on the reception quality and a target transmission quality, determining the amplification gain based on the reception quality corresponding to the error vector magnitude EVM and a target transmission quality; 4. The method of claim 3, comprising:

5. The measurement signal comprises the following signaling: RRC, MAC-CE, and DCI The method of claim 1 , wherein the method is represented using at least one of:

6. The EVM is signaled as follows: RRC, MAC-CE, and DCI The method of claim 4, wherein the at least one of

7. receiving a signal to be forwarded; receiving a measurement signal corresponding to the signal to be transferred; measuring the measurement signal to determine a reception quality, and determining an amplification gain of the signal to be transferred based on the reception quality and a target transmission quality; reporting the amplification gain; amplifying the signal to be transferred based on the amplification gain; transferring the amplified signal to be transferred; A signal transfer method comprising:

8. The method of claim 7, further comprising receiving indication information, the indication information indicating and being used to determine the amplification gain of the signal to be forwarded.

9. A communication device comprising a communication unit and a processing unit, The communication unit is configured to receive a signal to be forwarded carried on a time-frequency resource; the processing unit is configured to amplify the signal to be transferred based on an amplification gain of the signal to be transferred, the amplification gain of the signal to be transferred is determined by measuring a measurement signal, the measurement signal corresponds to the signal to be transferred, and the time-frequency resource corresponds to the measurement signal; the processing unit is further configured to determine the amplification gain based on a correspondence between the time-frequency resource and the measurement signal; the communication unit is further configured to forward the amplified forwarded signal; Communication equipment.

10. the communication unit is further configured to receive the measurement signal; the processing unit is further configured to measure the measurement signal to determine the amplification gain.

10. The communication device according to claim 9.

11. The processing unit measuring the measurement signal to determine reception quality; determining the amplification gain based on the reception quality and the target transmission quality; 11. The communication device according to claim 10, specifically adapted to:

12. The processing unit determining an amplification gain based on the reception quality corresponding to the error vector magnitude EVM and the target transmission quality; 12. A communication device according to claim 11, specially adapted to:

13. The measurement signal comprises the following signaling: RRC, MAC-CE, and DCI 10. The communication device of claim 9, wherein the communication device is indicated using at least one of:

14. The EVM is signaled as follows: RRC, MAC-CE, and DCI 13. The communication device of claim 12, wherein the communication device is represented by at least one of:

15. A communication device comprising a communication unit and a processing unit, the communication unit is configured to receive a signal to be transferred and to receive a measurement signal corresponding to the signal to be transferred; the processing unit is configured to measure the measurement signal to determine a reception quality, and to determine an amplification gain of the signal to be forwarded based on the reception quality and a target transmission quality; the communication unit is further configured to report the amplification gain; the processing unit is further configured to amplify the signal to be forwarded based on the amplification gain; The communication device, wherein the communication unit is further configured to forward the amplified forwarded signal.

16. The communication unit: receiving indication information, the indication information indicating and being used to determine the amplification gain of the signal to be transferred; The communication device of claim 15, further configured to:

17. 9. A communications device comprising a processor and a memory, the memory containing instructions that, when executed by the processor, enable the communications device to perform the method of any one of claims 1 to 8.

18. 9. A computer-readable storage medium comprising a computer program or instructions that, when executed on a computer, enable the computer to perform the method of any one of claims 1 to 8.

19. A computer program which, when executed on a computer, enables the computer to carry out the method according to any one of claims 1 to 8.

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