Power control method, relay node and network side equipment

Abstract

The invention discloses a power control method, a relay node and network side devices, and belongs to the technical field of communication, the power control method is applied to the relay node, and the relay node is used for forwarding signals for at least two network side devices. The method comprises the following steps: the relay node sends first indication information to a target network side device in the at least two network side devices; wherein the first indication information is used for adjusting a target parameter, and the target parameter comprises at least one of the following items: downlink (DL) sending power of the target network side equipment; the amplification gain of the relay node; the DL transmission power of the relay node; the uplink UL receiving power of the target network side equipment; the UL sending power of a terminal served by the target network side equipment; and the UL transmission power of the relay node.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a power control method, a relay node and a network side device. Background Art

[0002] Relay nodes can be used to forward signals from base stations or user equipment (UE). For example, a signal amplifier (Network controlled repeater, NCR) is a relay node that is widely used to expand the coverage of a cell. Relay devices can provide relay services for multiple base stations at the same time. However, when a relay device in a dual connectivity state forwards uplink and downlink signals of multiple base stations, the energy density of the signal when it reaches the relay device (for example, power spectrum density (PSD) or energy per resource element (EPRE)) or the energy density when the relay device forwards the signal may have certain differences. If the relay device uses the same antenna unit or radio frequency (RF) unit to receive / forward uplink and downlink signals for multiple base stations, a PSD imbalance (power spectrum density imbalance) problem may occur, resulting in damage to the amplified signal. Summary of the invention

[0003] The embodiments of the present application provide a power control method, a relay node, and a network-side device, which can solve the problem of PSD imbalance when the relay node receives or forwards signals for different base stations or terminals.

[0004] In a first aspect, a power control method is provided, which is performed by a relay node, wherein the relay node is used to forward signals for at least two network-side devices, and the method includes:

[0005] The relay node sends first indication information to a target network side device among the at least two network side devices;

[0006] The first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0007] Downlink DL transmit power of the target network side device;

[0008] an amplification gain of the relay node;

[0009] DL transmit power of the relay node;

[0010] The uplink UL receiving power of the target network side device;

[0011] UL transmit power of the terminal served by the target network side device;

[0012] The UL transmit power of the relay node.

[0013] In a second aspect, a power control method is provided, which is performed by a network side device, and the method includes:

[0014] The target network side device receives first indication information from a relay node; wherein the relay node is used to forward signals for at least two network side devices, and the at least two network side devices include the target network side device; the first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0015] Downlink DL transmit power of the target network side device;

[0016] an amplification gain of the relay node;

[0017] DL transmit power of the relay node;

[0018] The uplink UL receiving power of the target network side device;

[0019] UL transmit power of the terminal served by the target network side device;

[0020] The UL transmit power of the relay node.

[0021] In a third aspect, a power control device is provided, which is applied to a relay node, wherein the relay node is used to forward signals for at least two network side devices, and the device includes:

[0022] A sending module, used to send first indication information to a target network side device among at least two network side devices;

[0023] The first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0024] Downlink DL transmit power of the target network side device;

[0025] an amplification gain of the relay node;

[0026] DL transmit power of the relay node;

[0027] The uplink UL receiving power of the target network side device;

[0028] UL transmit power of the terminal served by the target network side device;

[0029] The UL transmit power of the relay node.

[0030] In a fourth aspect, a power control device is provided, the device comprising:

[0031] A receiving module, configured to receive first indication information from a relay node; wherein the relay node is configured to forward signals for at least two network side devices, wherein the at least two network side devices include the target network side device; and the first indication information is configured to adjust a target parameter, wherein the target parameter includes at least one of the following:

[0032] Downlink DL transmit power of the target network side device;

[0033] an amplification gain of the relay node;

[0034] DL transmit power of the relay node;

[0035] The uplink UL receiving power of the target network side device;

[0036] UL transmit power of the terminal served by the target network side device;

[0037] The UL transmit power of the relay node.

[0038] In a fifth aspect, a relay node is provided, which comprises a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0039] In a sixth aspect, a relay node is provided, comprising a processor and a communication interface, wherein the communication interface is used to send first indication information to a target network side device among the at least two network side devices; wherein the first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0040] Downlink DL transmit power of the target network side device;

[0041] an amplification gain of the relay node;

[0042] DL transmit power of the relay node;

[0043] The uplink UL receiving power of the target network side device;

[0044] UL transmit power of the terminal served by the target network side device;

[0045] The UL transmit power of the relay node.

[0046] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0047] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive first indication information from a relay node; wherein the relay node is used to forward a signal for at least two network side devices, wherein the at least two network side devices include the target network side device; and the first indication information is used to adjust a target parameter, wherein the target parameter includes at least one of the following:

[0048] Downlink DL transmit power of the target network side device;

[0049] an amplification gain of the relay node;

[0050] DL transmit power of the relay node;

[0051] The uplink UL receiving power of the target network side device;

[0052] UL transmit power of the terminal served by the target network side device;

[0053] The UL transmit power of the relay node.

[0054] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0055] In the tenth aspect, a wireless communication system is provided, comprising: a terminal, a relay node and a network side device, wherein the relay node can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0056] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0057] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the power control method as described in the first aspect, or to implement the power control method as described in the second aspect.

[0058] In an embodiment of the present application, in the case where a relay node is used to forward signals for at least two network-side devices, first indication information is sent to a target network-side device among the at least two network-side devices through the relay node; wherein the first indication information is used to adjust target parameters, and the target parameters include at least one of the following: DL transmit power of the target network-side device; amplification gain of the relay node; DL transmit power of the relay node; UL receive power of the target network-side device; UL transmit power of the terminal served by the target network-side device; UL transmit power of the relay node. The target network-side device can adjust the target parameters based on the first indication information, so that when the relay node receives signals for different network-side devices or terminals, the power difference of the receive power of each of the signals is within a preset range, or when the relay node forwards signals for different network-side devices or terminals, the power difference of the forwarding power of each of the signals is within a preset range, which can solve the problem of unbalanced PSD received or forwarded by the relay node and avoid damage to the amplified signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0060] Figure 2 is a schematic diagram of a network structure of an NCR device applicable to an embodiment of the present application;

[0061] Figure 3 This is one of the flowcharts of the power control method provided in the embodiment of the present application;

[0062] Figure 4 This is the second flow chart of the power control method provided in the embodiment of the present application;

[0063] Figure 5 It is one of the structural schematic diagrams of the power control device provided in the embodiment of the present application;

[0064] Figure 6 This is the second structural schematic diagram of the power control device provided in the embodiment of the present application;

[0065] Figure 7 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0066] Figure 8 It is a structural diagram of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0068] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0069] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0070] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0071] Figure 1 It is a block diagram of a wireless communication system that can be applied in the embodiments of the present application. Figure 1 The wireless communication system shown includes a terminal 11, a terminal 12, a relay node 13, a network side device 14 and a network side device 15; wherein the terminal 11 is connected to the network side device 14 via the relay node 13, and the terminal 12 is connected to the network side device 15 via the relay node 13.

[0072] The relay node 13 can provide relay services for the network side device 14 and the network side device 15 at the same time, that is, the relay node 13 can be used to forward the uplink and downlink signals for the network side device 14 and the uplink and downlink signals of the network side device 15, that is, the relay node 13 can be used to forward the uplink and downlink signals of the network side device 14 and the uplink and downlink signals of the network side device 15. The relay node 13 can be an NCR, an intelligent reflective surface (RIS), a layer 2 relay, a layer 3 relay, a relay station or a relay (Relay) UE, etc. In some embodiments of the present application, the relay node is introduced by taking the NCR as an example, but the relay node is not limited to the NCR.

[0073] The terminals 11 and 12 may be mobile phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop Computer), notebook computers, personal digital assistants (PDA), handheld computers, netbooks, ultra-mobile personal computers (UMPC), mobile Internet devices (Mobile Internet Device, MID), augmented reality (AR), virtual reality (VR) equipment, robots, wearable devices (Wearable Device), flight vehicles (flight vehicles), vehicle user equipment (VUE), shipborne equipment, pedestrian terminals (Pedestrian User Equipment, PUE), smart homes (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (PC), ATMs or self-service machines and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

[0074] The network side device 14 and the network side device 15 may include access network devices, wherein the access network devices may also be referred to as radio access network (RAN) devices, radio access network functions or radio access network units. The access network devices may include base stations, wireless local area network (WLAN) access points (APs) or wireless fidelity (WiFi) nodes, etc. Among them, the base station may be referred to as a Node B (NB), an Evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field, and as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, and it should be noted that in the embodiments of the present application, only a base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited. The access network device may include a relay node.

[0075] In order to facilitate a clearer understanding of the technical solutions provided by the embodiments of the present application, some relevant knowledge is first introduced as follows.

[0076] Figure 2 is a schematic diagram of the structure of an NCR device applicable to the embodiment of the present application, such as Figure 2As shown, the NCR device includes a terminal module (mobile termination, MT) (or NCR-MT) and a forwarding unit (forwarding unit, Fwd) (or NCR-Fwd), wherein the MT can establish a connection with an upstream base station through a control link, and the base station transmits control signaling to the NCR through the MT, and can control the transmission / reception related parameters (including power, amplification factor / amplifying gain, beam, on / off parameters, etc.) of the backhaul link (Backhaul link, BH) between the NCR and the base station or the access link (Access link, AL) between the NCR and the UE. The transmission / reception related parameters can be controlled separately for DL ​​and UL, or uniformly controlled.

[0077] When NCR-Fwd forwards signals from different base stations, it can adopt the time division multiplexing (TDM) mode to forward signals from different base stations at different times, or it can adopt the frequency division multiplexing (FDM) or space division multiplexing (SDM) mode to forward signals from different base stations at the same time.

[0078] The hardware assumption of NCR-Fwd is divided into two parts, one for signal transmission and reception from base station to NCR, and the other for signal transmission and reception from NCR to UE. When NCR performs dual link, it is assumed that NCR can use the same antenna unit / RF unit to transmit and receive signals for multiple base stations, and can also use the same antenna unit / RF unit to transmit and receive signals for multiple UEs (UEs belonging to different base stations), that is, multiple base stations share the antenna unit / RF unit of NCR. In the NCR dual link scenario, NCR will forward the uplink and downlink signals of at least two base stations. When NCR uses the same antenna unit or RF to transmit and receive uplink and downlink signals for at least two base stations, PSD imbalance will occur.

[0079] The power control method, relay node and network side device provided in the embodiments of the present application are described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0080] Figure 3 is one of the flow charts of the power control method provided in the embodiment of the present application, the method is applied to a relay node, the relay node is used to forward signals for at least two network side devices, such as Figure 3 As shown, the method comprises step 301:

[0081] Step 301: The relay node sends first indication information to a target network side device among the at least two network side devices;

[0082] The first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0083] Downlink DL transmit power of the target network side device;

[0084] an amplification gain of the relay node;

[0085] DL transmit power of the relay node;

[0086] The uplink UL receiving power of the target network side device;

[0087] UL transmit power of the terminal served by the target network side device;

[0088] The UL transmit power of the relay node.

[0089] It should be noted that the embodiments of the present application can be applied to a wireless communication system supporting relay nodes. The relay nodes mentioned in the embodiments of the present application are used to receive signals for different network side devices or terminals served by network side devices, or to forward signals for different network side devices or terminals served by network side devices.

[0090] Optionally, the relay node may include: NCR, intelligent reflective surface (RIS), layer 2 relay, layer 3 relay or relay (Relay) UE, etc.

[0091] Optionally, the relay node sends first indication information corresponding to a target network side device among the at least two network side devices; the first indication information is used to assist the target network side device in adjusting target parameters.

[0092] Optionally, the first indication information may include at least one of the following parameters:

[0093] 1) Target parameter adjustment amount;

[0094] The target parameter adjustment amount may include at least one of a power spectrum density (PSD) adjustment amount, an energy per resource element (EPRE) adjustment amount, and an amplification gain adjustment amount of a relay node.

[0095] 2) A target parameter increase indicator, used to indicate an increase in the target parameter;

[0096] 3) A target parameter reduction indicator, used to indicate a reduction in the target parameter;

[0097] 4) The target parameter expected by the relay node; that is, the value expected by the relay node for the target parameter.

[0098] For example, the target parameters expected by the relay node may include at least one of the following: the DL transmit power of the target network side device expected by the relay node; the amplification gain expected by the relay node; the DL transmit power of the relay node expected by the relay node; the UL receive power of the target network side device expected by the relay node; the UL transmit power of the terminal served by the target network side device expected by the relay node; and the UL transmit power of the relay node expected by the relay node.

[0099] 5) Current value of target parameter;

[0100] 6) Target parameter adjustment flag, used to indicate whether the target parameter has been adjusted.

[0101] Optionally, at least one parameter included in the first indication information is effective on at least one of the following associated items:

[0102] a) Time domain resources;

[0103] The DL transmission power adjustment parameter of the target network side device takes effect on the associated time domain resources;

[0104] b) Frequency domain resources;

[0105] The DL transmission power adjustment parameter of the target network side device takes effect on the associated frequency domain resources;

[0106] c) airspace resources;

[0107] The DL transmission power adjustment parameter of the target network side device takes effect on the associated spatial resources.

[0108] Optionally, taking the case where the target parameter includes at least one of the DL transmit power of the target network side device, the amplification gain of the relay node, and the DL transmit power of the relay node as an example, in an embodiment of the present application, the target parameter is associated with at least one of the following:

[0109] 1) Time domain resources, such as symbols or time slots. The target parameters are effective on the associated time domain resources.

[0110] 2) Frequency domain resources, such as carriers / physical resource blocks (PRB) groups / carrier groups. The target parameters are effective on the associated frequency domain resources.

[0111] 3) Spatial resources, such as the DL transmit beam (TX beam) of the target base station / DL receive beam (RX beam) of the NCR. The target parameters are effective on the associated spatial resources.

[0112] In the power control method provided in the embodiment of the present application, the target parameter takes effect on the associated time domain resources, frequency domain resources or spatial domain resources. In this way, the target network device can ignore the target parameter on resources other than the associated time domain resources, frequency domain resources or spatial domain resources, thereby leaving the target network device with a certain scheduling flexibility.

[0113] In addition, when the transmitting end (eg, target base station) and the receiving end (eg, NCR) use different beams, the corresponding path losses are different, and the at least one parameter is only effective in the associated airspace, and different parameters can be determined for different path losses.

[0114] Optionally, when the target parameter is the DL transmit power of the target network side device, the reference power value of the target parameter adjustment amount includes: the transmit power value of the target reference signal of the MT DL of the relay node. The target reference signal may be indicated by the target network side device, for example, the target network side device indicates a reference channel state information reference signal (Channel State Information Reference Signal, CSI-RS) / primary synchronization signal (Primary Synchronization Signal, PSS) / secondary synchronization signal (Secondary Synchronization Signal, SSS).

[0115] Optionally, in the case where the target parameter is the UL transmit power of the terminal served by the target network side device, the reference power value of the target parameter adjustment amount includes: the transmit power value of the target reference signal of the MT UL of the relay node. The target reference signal may be indicated by the target network side device, for example, the target network side device indicates a reference sounding reference signal (SRS) / physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH).

[0116] Optionally, the method further comprises at least one of the following:

[0117] 1) The relay node receives signals from different network-side devices among the at least two network-side devices, and a power difference between received powers of the signals is within a preset range;

[0118] 2) The relay node forwards signals from different network-side devices among the at least two network-side devices, and a power difference between forwarding powers of the signals is within a preset range;

[0119] 3) The relay node receives signals from terminals served by different network-side devices among the at least two network-side devices, and a power difference between received powers of the signals is within a preset range;

[0120] 4) The relay node forwards signals from terminals served by different network-side devices among the at least two network-side devices, and a power difference between forwarding powers of the signals is within a preset range.

[0121] It should be noted that the preset range is determined based on at least one of the following: agreed upon by the protocol; determined autonomously by the relay node; determined by the relay node according to the instruction of the target network side device. The target network side device, such as the target base station, may indicate at least one of the preset range, the upper limit of the power difference, and the lower limit of the power difference.

[0122] Optionally, in the case where the relay node forwards signals from different network-side devices among the at least two network-side devices, when the power difference between the forwarding powers of at least two of the signals exceeds a preset range, the relay node adjusts the target parameter so that the power difference between the forwarding powers of the signals is within the preset range. For example, the target parameter includes at least one of the amplification gain of the relay node and the UL transmission power of the relay node.

[0123] Optionally, in the case where the relay node forwards signals from terminals served by different network-side devices among the at least two network-side devices, when the power difference between the forwarding powers of at least two of the signals exceeds a preset range, the relay node adjusts the target parameter so that the power difference between the forwarding powers of the signals is within the preset range. For example, the target parameter includes at least one of the amplification gain of the relay node and the DL transmission power of the relay node.

[0124] Optionally, when the relay node receives multiple second indication information from different network side devices among the at least two network side devices, and the indication values ​​of the target parameters respectively indicated by the multiple second indication information are different, or the difference between the indication values ​​of the target parameters respectively indicated by the multiple second indication information exceeds a preset value, the method also includes at least one of the following items: the relay node determines the current value of the target parameter based on the second indication information sent by the target network side device among the at least two network side devices; the target network side device is, for example, a master cell group (Master Cell Group, MCG).

[0125] The relay node determines the current value of the target parameter according to the maximum value or the minimum value of the indication values ​​of the target parameter respectively indicated by the multiple second indication information;

[0126] The relay node determines the current value of the target parameter according to an average value of the indication values ​​of the target parameters respectively indicated by the plurality of second indication information;

[0127] The relay node determines, according to an indication value greater than a first threshold among the indication values ​​of the target parameter respectively indicated by the plurality of second indication information, a current value of the target parameter;

[0128] The relay node determines the current value of the target parameter according to the indication value of the target parameter that is less than the second threshold among the indication values ​​of the target parameter respectively indicated by the multiple second indication information.

[0129] Optionally, the second indication information is used to indicate an indication value of the target power.

[0130] In an embodiment of the present application, in the case where a relay node is used to forward signals for at least two network-side devices, first indication information is sent to a target network-side device among the at least two network-side devices through the relay node; wherein the first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following: DL transmit power of the target network-side device; amplification gain of the relay node; DL transmit power of the relay node; UL receive power of the target network-side device; UL transmit power of the terminal served by the target network-side device; UL transmit power of the relay node. The target network-side device can adjust the target parameter based on the first indication information, so that when the relay node receives signals for different network-side devices or terminals, the power difference of the receive power of each of the signals is within a preset range, or when the relay node forwards signals for different network-side devices or terminals, the power difference of the forwarding power of each of the signals is within a preset range, which can solve the problem of unbalanced PSD reception or forwarding by the relay node and avoid damage to the amplified signal.

[0131] Figure 4 This is a second flow chart of a power control method provided in an embodiment of the present application, which is executed by a network side device, such as Figure 4 As shown, the method includes step 401:

[0132] Step 401: The target network side device receives first indication information from a relay node; wherein the relay node is used to forward signals for at least two network side devices, and the at least two network side devices include the target network side device; the first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0133] Downlink DL transmit power of the target network side device;

[0134] an amplification gain of the relay node;

[0135] DL transmit power of the relay node;

[0136] The uplink UL receiving power of the target network side device;

[0137] UL transmit power of the terminal served by the target network side device;

[0138] The UL transmit power of the relay node.

[0139] Optionally, the target network side device adjusts the target parameter based on the first indication information.

[0140] In an embodiment of the present application, a target network side device receives first indication information corresponding to the target network side device from a relay node; the first indication information is sent by the relay node to the target network side device in the at least two network side devices when the relay node is used to forward signals for at least two network side devices. The first indication information is used to assist the target network side device in adjusting target parameters, and the target parameters include at least one of the following: DL transmit power of the target network side device; amplification gain of the relay node; DL transmit power of the relay node; UL receive power of the target network side device; UL transmit power of the terminal served by the target network side device; UL transmit power of the relay node. The target network side device can adjust the target parameters based on the first indication information, so that when the relay node receives signals for different network side devices or terminals, the power difference of the receive power of each signal is within a preset range, or when the relay node forwards signals for different network side devices or terminals, the power difference of the forwarding power of each signal is within a preset range, which can solve the problem of unbalanced PSD reception or forwarding of the relay node and avoid damage to the amplified signal.

[0141] Optionally, the first indication information includes at least one of the following parameters:

[0142] Target parameter adjustment amount;

[0143] A target parameter increase indicator is used to indicate an increase in the target parameter;

[0144] A target parameter reduction indicator is used to indicate a reduction in the target parameter;

[0145] The target parameter expected by the relay node;

[0146] The current value of the target parameter;

[0147] The target parameter adjustment flag is used to indicate whether the target parameter has been adjusted.

[0148] Optionally, at least one parameter included in the first indication information is effective on at least one of the following associated items:

[0149] Time domain resources;

[0150] Frequency domain resources;

[0151] Airspace resources.

[0152] Optionally, when the target parameter is the DL transmission power of the target network side device, the reference power value of the target parameter adjustment amount includes the transmission power value of the target reference signal of the MT DL of the relay node.

[0153] Optionally, when the target parameter is the UL transmit power of the terminal served by the target network side device, the reference power value of the target parameter adjustment amount includes the transmit power value of the target reference signal of the MT UL of the relay node.

[0154] Here, based on the power control method provided in the embodiment of the present application, the following two exemplary technical solutions are provided: Take the target network side device as the target base station (or referred to as base station) and the relay node as the NCR as an example for description.

[0155] Technical solution 1: PSD control during DL forwarding by NCR.

[0156] 1. NCR controls the DL transmit power of the base station, thereby controlling the PSD / EPRE when the NCR forwards the signal.

[0157] The NCR in the dual-link state can report the DL power adjustment parameters of the base station (such as PSD adjustment amount / EPRE adjustment amount) to the base station, and assist the base station in adjusting the DL transmission power of the base station so that when the NCR receives signals from different base stations, the PSD difference of the received signals is also within the preset range, or, when the NCR forwards signals from different base stations, the PSD difference of the sent signals is also within the preset range.

[0158] Here, the reference power value of the DL power adjustment parameter reported by the NCR to the base station may be the transmit power value of the NCR-MT DL target reference signal, and the power adjustment is performed based on the reference power value.

[0159] Optionally, the target reference signal may be indicated by a base station, for example, the base station indicates a reference CSI-RS / PSS / SSS.

[0160] Optionally, the base station DL power adjustment parameter reported by the NCR is associated with at least one of the following:

[0161] 1) Time domain resources, such as symbol / slot. The DL power adjustment parameters of the base station reported by the NCR take effect on the associated time domain resources.

[0162] 2) Frequency domain resources, such as carrier / PRB group / carrier group. The base station DL power adjustment parameters reported by NCR take effect on the associated time domain resources.

[0163] 3) Spatial resources, such as the DL TX beam of the base station / DL RX beam of the NCR. The base station DL power adjustment parameters reported by the NCR take effect on the associated spatial resources.

[0164] When the transmitting end (such as a base station) and the receiving end (such as an NCR) use different beams, the corresponding path losses are different. The NCR needs to determine different base station DL power adjustment parameters for different path losses.

[0165] The base station DL power adjustment parameters reported by the NCR take effect on the associated time domain resources, frequency domain resources or spatial domain resources. In this way, the target network device can ignore the base station DL power adjustment parameters on resources other than the associated time domain resources, frequency domain resources or spatial domain resources, which can leave a certain scheduling flexibility for the target network device.

[0166] Optionally, the base station DL power adjustment parameter reported by the NCR may also be an increase / decrease flag, indicating that the power needs to be increased / decreased.

[0167] Optionally, the base station DL power adjustment parameter reported by the NCR may also be the NCR DL receiving power expected by the NCR (eg desired reception PSD / desired reception EPRE) or the base station DL transmitting power expected by the NCR.

[0168] Optionally, the preset range of the PSD difference in the present application may be agreed upon by the protocol, determined by the NCR autonomous implementation, or determined according to a preset range indicated by the base station (the base station may indicate an upper limit and / or lower limit of the difference).

[0169] 2. NCR controls the PSD / EPRE when NCR forwards the signal by controlling the amplifying gain of NCR.

[0170] Option 1: The NCR in dual-link state can report the amplifying gain adjustment parameter / NCR DL transmit power adjustment parameter to the base station to assist the base station in adjusting the amplifying gain / NCR DL transmit power of the NCR so that when the NCR forwards signals from different base stations, the PSD difference of the signal transmission is also within the preset range.

[0171] Optionally, the parameter is associated with at least one of the following: time domain resources; frequency domain resources; spatial domain resources.

[0172] Optionally, the amplifying gain adjustment parameter may be an increase / decrease flag, indicating that the amplifying gain needs to be increased / decreased accordingly. The NCR DL transmit power adjustment parameter may be an increase / decrease flag, indicating that the NCR DL transmit power needs to be increased / decreased accordingly.

[0173] Optionally, the amplifying gain adjustment parameter reported by the NCR may be an expected amplifying gain adjustment parameter, and the NCR DL transmit power adjustment parameter reported by the NCR may be an expected NCR DL transmit power.

[0174] Option 2: When the NCR forwards signals from different base stations, if the PSD difference of the transmitted signals exceeds a preset range, the NCR determines and adjusts the amplifying gain / NCR DL transmit power so that the PSD difference of the transmitted signals is within the preset range.

[0175] Optionally, the NCR reports at least one of the following parameters to the base station: amplifying gain adjustment amount / NCR DL transmit power adjustment amount / amplifying gain current value / NCR DL transmit power current value / reporting whether amplifying gain adjustment is performed / NCR DL transmit power adjustment, and the parameters reported by the NCR are used to assist the base station in controlling the NCR. The parameters reported by the NCR are associated with at least one of the following: time domain resources; frequency domain resources; spatial domain resources.

[0176] Option 3: If the NCR receives multiple indication information (from different base stations), indicating different amplifying gains / NCR DL transmit powers for a certain forwarding time, or the difference between the indicated amplifying gains / NCR DL transmit powers exceeds a preset value, the NCR determines the amplifying gain / NCR DL transmit power according to a preset rule.

[0177] Optionally, the implementation of determining the amplifying gain / NCR DL transmit power according to a preset rule may include at least one of the following:

[0178] Method 1: Determine the amplifying gain / NCR DL transmit power according to the indication information of MCG.

[0179] Method 2: determine the amplifying gain / NCR DL transmit power as the indicated larger / smaller / maximum / minimum amplifying gain / NCR DL transmit power.

[0180] Mode 3: Determine the amplifying gain / NCR DL transmit power as an average value of a plurality of indicated amplifying gains / NCR DL transmit powers.

[0181] Optionally, if the NCR does not set the amplifying gain / NCR DL transmit power according to the instructions of a certain base station, the NCR may report at least one of the following parameters to the base station: amplifying gain adjustment amount / NCR DL transmit power adjustment amount / amplifying gain current value / NCR DL transmit power current value / reporting whether amplifying gain adjustment has been performed / NCR DL transmit power adjustment. The parameters reported by the NCR are used to assist the base station in controlling the NCR.

[0182] Technical solution 2: NCR performs PSD control of UL forwarding.

[0183] A) NCR controls the UL transmit power of the UE served by the base station, thereby controlling the PSD / EPRE when the NCR forwards the signal.

[0184] The NCR in the dual link state can report the UE UL power adjustment parameters (such as PSD adjustment amount / EPRE adjustment amount) to the base station, and the auxiliary base station adjusts the UL reception PSD / the auxiliary base station controls the UL transmission power of the UE served by the base station (such as adjusting the UL power control parameter P0), so that when the NCR receives signals from different UEs (i.e., different UEs served by different base stations), the PSD difference of the signal reception is also within the preset range. Or, when the NCR forwards signals from different UEs (i.e., different UEs served by different base stations), the PSD difference of the signal transmission is also within the preset range.

[0185] Here, the reference power value of the UE UL power adjustment parameter reported by the NCR to the base station may be the transmit power value of the NCR-MT UL target reference signal, and the power adjustment is performed based on the reference power. Optionally, the target reference signal may be indicated by the base station, for example, the base station indicates the reference SRS / PUSCH / PUCCH.

[0186] Optionally, the UE UL power adjustment parameter is associated with at least one of the following:

[0187] 1) Time domain resources, such as symbol / slot. The parameters are effective on the associated time domain resources.

[0188] 2) Frequency domain resources, such as Carrier / PRB group / carrier group. The UE UL power adjustment parameter takes effect on the associated time domain resources.

[0189] 3) Spatial resources, such as UL RX beam of NCR / UL TX beam of UE, or UL RX beam of base station / UL TX beam of NCR. The UE UL power adjustment parameter takes effect on the associated spatial resources.

[0190] When the transmitting end and the receiving end use different beams, the corresponding path losses are different, and the NCR needs to determine different parameters for different path losses. The transmitting end can be the UE and the receiving end is the NCR; or the transmitting end is the NCR and the receiving end is the base station.

[0191] The UE UL power adjustment parameter takes effect on the associated time domain resources, frequency domain resources or spatial domain resources. In this way, the target network device can ignore the UE UL power adjustment parameter on resources other than the associated time domain resources, frequency domain resources or spatial domain resources, which can leave a certain scheduling flexibility for the target network device.

[0192] Optionally, the UE UL power adjustment parameter may also be an increase / decrease flag, indicating that the UE UL power needs to be increased / decreased.

[0193] Optionally, the UE UL power adjustment parameter reported by the NCR may also be an expected NCR UL reception power (eg desired reception PSD / desired reception EPRE) or an expected UE UL transmission power.

[0194] B) NCR controls the PSD / EPRE when NCR forwards the signal by controlling the amplifying gain of NCR.

[0195] Option 1: The NCR in dual-link state can report the amplifying gain adjustment parameter / NCR UL transmit power adjustment parameter to the base station to assist the base station in adjusting the amplifying gain / NCR UL transmit power of the NCR, so that when the NCR forwards signals from different UEs served by different base stations, the PSD difference of the signal transmission is also within the preset range.

[0196] Optionally, the amplifying gain adjustment parameter / NCR UL transmit power adjustment parameter is associated with at least one of the following: time domain resources, frequency domain resources, and spatial domain resources.

[0197] Optionally, the amplifying gain adjustment parameter may be an increase / decrease flag, indicating that the amplifying gain needs to be increased / decreased. The NCR UL transmit power adjustment parameter may also be an increase / decrease flag, indicating that the NCR UL transmit power needs to be increased / decreased.

[0198] Optionally, the parameter reported by the NCR may also be an expected amplifying gain adjustment parameter / expected NCR UL transmit power.

[0199] Option 2: When the NCR forwards signals from different UEs served by different base stations, if the PSD difference of the signal transmission exceeds a preset range, the NCR determines and adjusts the amplifying gain / NCR UL transmit power so that the PSD difference of the signal transmission is within the preset range.

[0200] Optionally, the NCR reports at least one of the following parameters to the base station: amplifying gain adjustment amount / NCR UL transmit power adjustment amount / amplifying gain current value / NCR UL transmit power current value / reporting whether amplifying gain adjustment is performed / NCR UL transmit power adjustment, and the auxiliary base station controls the NCR. The parameters reported by the NCR are associated with at least one of the following: time domain resources, frequency domain resources, and spatial domain resources.

[0201] Option 3: If the NCR receives multiple indication information from different base stations, indicating different amplifying gains / NCR UL transmit powers for a certain forwarding time, or the difference between the indicated amplifying gains / NCR UL transmit powers exceeds a preset value, the NCR determines the amplifying gain / NCR UL transmit power according to one of the indication information (for example, according to the indication information of the MCG).

[0202] When the PSD difference of signals received by the NCR from different base stations is within a preset range, when the NCR forwards signals from different base stations, the PSD difference of signal transmission is also within the preset range.

[0203] Optionally, if the NCR does not set the amplifying gain / NCR UL transmit power according to the instructions of a certain base station, the NCR can report the amplifying gain adjustment amount / NCR UL transmit power adjustment amount / amplifyinggain current value / NCR UL transmit power current value / report whether the amplifying gain adjustment / NCR UL transmit power adjustment is performed to the base station, and assist the base station in controlling the NCR.

[0204] The power control method provided in the embodiment of the present application can be executed by a power control device. In the embodiment of the present application, the power control device provided in the embodiment of the present application is described by taking the power control method executed by the power control device as an example.

[0205] Figure 5 is one of the structural diagrams of the power control device provided in the embodiment of the present application, such as Figure 5 As shown, the power control device 500 is applied to a relay node, and the relay node is used to forward signals for at least two network side devices. The power control device 500 includes:

[0206] A sending module 501, configured to send first indication information to a target network side device among the at least two network side devices;

[0207] The first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following:

[0208] Downlink DL transmit power of the target network side device;

[0209] an amplification gain of the relay node;

[0210] DL transmit power of the relay node;

[0211] The uplink UL receiving power of the target network side device;

[0212] UL transmit power of the terminal served by the target network side device;

[0213] The UL transmit power of the relay node.

[0214] The power control device provided in the embodiment of the present application sends first indication information to a target network side device among the at least two network side devices when the relay node is used to forward signals for at least two network side devices; wherein the first indication information is used to adjust the target parameter, and the target parameter includes at least one of the following: the DL transmission power of the target network side device; the amplification gain of the relay node; the DL transmission power of the relay node; the UL reception power of the target network side device; the UL transmission power of the terminal served by the target network side device; the UL transmission power of the relay node. The target network side device can adjust the target parameter based on the first indication information, so that when the relay node receives signals for different network side devices or terminals, the power difference of the reception power of each of the signals is within a preset range, or when the relay node forwards signals for different network side devices or terminals, the power difference of the forwarding power of each of the signals is within a preset range, which can solve the problem of unbalanced PSD received or forwarded by the relay node and avoid damage to the amplified signal.

[0215] Optionally, the first indication information includes at least one of the following parameters:

[0216] Target parameter adjustment amount;

[0217] A target parameter increase indicator is used to indicate an increase in the target parameter;

[0218] A target parameter reduction indicator is used to indicate a reduction in the target parameter;

[0219] The target parameter expected by the relay node;

[0220] The current value of the target parameter;

[0221] The target parameter adjustment flag is used to indicate whether the target parameter has been adjusted.

[0222] Optionally, at least one parameter included in the first indication information is effective on at least one of the following associated items:

[0223] Time domain resources;

[0224] Frequency domain resources;

[0225] Airspace resources.

[0226] Optionally, when the target parameter is the DL transmit power of the target network side device, the reference power value of the target parameter adjustment amount includes:

[0227] The target reference signal transmission power value of the terminal module MT DL of the relay node.

[0228] Optionally, when the target parameter is the UL transmit power of the terminal served by the target network side device, the reference power value of the target parameter adjustment amount includes:

[0229] The target reference signal transmit power value of the MT UL of the relay node.

[0230] Optionally, the power control device 500 further includes: a communication module;

[0231] The communication module is used for at least one of the following:

[0232] receiving signals from different network-side devices among the at least two network-side devices, wherein a power difference between received powers of the signals is within a preset range;

[0233] forwarding signals from different network-side devices among the at least two network-side devices, wherein a power difference between forwarding powers of the signals is within a preset range;

[0234] receiving signals from terminals served by different network side devices among the at least two network side devices, wherein a power difference between received powers of the signals is within a preset range;

[0235] The signals from the terminals served by different network side devices among the at least two network side devices are forwarded, and the power difference between the forwarding powers of the signals is within a preset range.

[0236] Optionally, the power control device 500 further includes: a first adjustment module;

[0237] The first adjustment module is used to adjust the target parameter so that the power difference between the forwarding powers of each of the signals is within the preset range when the power difference between the forwarding powers of at least two of the signals exceeds a preset range when the relay node forwards signals from different network side devices among the at least two network side devices.

[0238] Optionally, the power control device 500 further includes: a second adjustment module;

[0239] The second adjustment module is used to adjust the target parameter so that the power difference between the forwarding powers of each of the signals is within the preset range when the power difference between the forwarding powers of at least two of the signals exceeds a preset range when the relay node forwards signals from terminals served by different network side devices among the at least two network side devices.

[0240] Optionally, the power control device 500 further includes: a determination module;

[0241] The determination module is used for at least one of the following:

[0242] Determining a current value of the target parameter according to second indication information sent by a target network side device among the at least two network side devices;

[0243] Determine the current value of the target parameter according to the maximum value or the minimum value of the indication values ​​of the target parameter respectively indicated by the plurality of second indication information;

[0244] determining a current value of the target parameter according to an average value of the indication values ​​of the target parameters respectively indicated by the plurality of second indication information;

[0245] Determine a current value of the target parameter according to an indication value greater than a first threshold among the indication values ​​of the target parameter respectively indicated by the plurality of second indication information;

[0246] The current value of the target parameter is determined according to the indication values ​​of the target parameter respectively indicated by the multiple second indication information that are less than the second threshold.

[0247] The power control device in the embodiment of the present application can be a relay node, such as NCR, intelligent reflective surface (RIS), layer 2 relay, layer 3 relay, relay station or relay (Relay) UE, etc., which is not specifically limited in the embodiment of the present application.

[0248] Figure 5 The power control device shown can achieve Figure 3 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0249] Figure 6 This is a second structural diagram of the power control device provided in the embodiment of the present application, such as Figure 6 As shown, the power control device 600 is applied to a target network side device, and the power control device 600 includes:

[0250] The receiving module 601 is configured to receive first indication information from a relay node; wherein the relay node is configured to forward signals for at least two network side devices, wherein the at least two network side devices include the target network side device; and the first indication information is configured to adjust a target parameter, wherein the target parameter includes at least one of the following:

[0251] Downlink DL transmit power of the target network side device;

[0252] an amplification gain of the relay node;

[0253] DL transmit power of the relay node;

[0254] The uplink UL receiving power of the target network side device;

[0255] UL transmit power of the terminal served by the target network side device;

[0256] The UL transmit power of the relay node.

[0257] The power control device provided in the embodiment of the present application receives the first indication information from the relay node; the first indication information is sent by the relay node to the target network side device in the at least two network side devices when the relay node is used to forward the signal for at least two network side devices. The first indication information is used to adjust the target parameters, and the target parameters include at least one of the following: the DL transmission power of the target network side device; the amplification gain of the relay node; the DL transmission power of the relay node; the UL receiving power of the target network side device; the UL transmission power of the terminal served by the target network side device; the UL transmission power of the relay node. The target network side device can adjust the target parameters based on the first indication information, so that when the relay node receives the signals for different network side devices or terminals, the power difference of the receiving power of each of the signals is within a preset range, or when the relay node forwards the signals for different network side devices or terminals, the power difference of the forwarding power of each of the signals is within a preset range, which can solve the problem of unbalanced PSD reception or forwarding of the relay node and avoid damage to the amplified signal.

[0258] Optionally, the first indication information includes at least one of the following parameters:

[0259] Target parameter adjustment amount;

[0260] A target parameter increase indicator is used to indicate an increase in the target parameter;

[0261] A target parameter reduction indicator is used to indicate a reduction in the target parameter;

[0262] The target parameter expected by the relay node;

[0263] The current value of the target parameter;

[0264] The target parameter adjustment flag is used to indicate whether the target parameter has been adjusted.

[0265] Optionally, at least one parameter included in the first indication information is effective on at least one of the following associated items:

[0266] Time domain resources;

[0267] Frequency domain resources;

[0268] Airspace resources.

[0269] Optionally, when the target parameter is the DL transmission power of the target network side device, the reference power value of the target parameter adjustment amount includes: a transmission power value of a target reference signal of the terminal module MT DL of the relay node.

[0270] Optionally, when the target parameter is the UL transmission power of the terminal served by the target network side device, the reference power value of the target parameter adjustment amount includes: the transmission power value of the target reference signal of the MT UL of the relay node.

[0271] Optionally, the power control device 600 further includes: a third adjustment module;

[0272] The third adjustment module is used to adjust the target parameter based on the first indication information.

[0273] The power control device in the embodiment of the present application may be a network side device, or a component in a network side device, such as an integrated circuit or a chip, and the embodiment of the present application does not make any specific limitation.

[0274] Figure 6 The power control device shown can achieve Figure 4 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0275] Figure 7 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application, such as Figure 7 As shown, the embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702, the memory 702 stores a program or instruction that can be run on the processor 701, for example, when the communication device 700 is a relay node, the program or instruction is executed by the processor 701 to implement the above Figure 3 The various steps of the power control method embodiment shown in the figure can achieve the same technical effect. When the communication device 700 is a network side device, the program or instruction is executed by the processor 701 to implement the above Figure 4 The various steps of the power control method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0276] The embodiment of the present application also provides a relay node, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 3 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.

[0277] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0278] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 4 The steps of the method embodiment shown. This network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0279] Specifically, an embodiment of the present application also provides a network side device. Figure 8 is a schematic diagram of the structure of the network side device provided in the embodiment of the present application, such as Figure 8 As shown, the network side device 800 includes: an antenna 801, a radio frequency device 802, a baseband device 803, a processor 804 and a memory 805. The antenna 801 is connected to the radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information through the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be sent and sends it to the radio frequency device 802. The radio frequency device 802 processes the received information and sends it out through the antenna 801.

[0280] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 803, which includes a baseband processor.

[0281] The baseband device 803 may include, for example, at least one baseband board on which a plurality of chips are arranged. Figure 8 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 805 through a bus interface to call the program in the memory 805 to execute the network device operations shown in the above method embodiment.

[0282] The network side device may further include a network interface 806, which is, for example, a Common Public Radio Interface (CPRI).

[0283] Specifically, the network side device 800 of the embodiment of the present application further includes: instructions or programs stored in the memory 805 and executable on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute. Figure 4 The steps in the method embodiment shown achieve the same technical effect and are not described here in detail to avoid repetition.

[0284] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned power control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0285] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0286] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned power control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0287] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0288] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned power control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0289] The embodiment of the present application also provides a wireless communication system, including: a terminal, a relay node and a network side device, wherein the relay node can be used to perform the following steps: Figure 3 The steps of the method embodiment shown in the figure, the network side device can be used to perform the following steps: Figure 4 Steps of the method embodiment are shown.

[0290] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0291] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0292] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A power control method, characterized in that: Applied to a relay node, the relay node is used to forward signals for at least two network-side devices, the method comprising: The relay node sends first indication information to a target network side device among the at least two network side devices; The first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following: Downlink DL transmit power of the target network side device; an amplification gain of the relay node; DL transmit power of the relay node; The uplink UL receiving power of the target network side device; UL transmit power of the terminal served by the target network side device; The UL transmit power of the relay node.

2. The power control method according to claim 1, characterized in that: The first indication information includes at least one of the following parameters: Target parameter adjustment amount; A target parameter increase indicator is used to indicate an increase in the target parameter; A target parameter reduction indicator is used to indicate a reduction in the target parameter; The target parameter expected by the relay node; The current value of the target parameter; The target parameter adjustment flag is used to indicate whether the target parameter has been adjusted.

3. The power control method according to claim 2, characterized in that: At least one parameter included in the first indication information is effective on at least one of the following associated items: Time domain resources; Frequency domain resources; Airspace resources.

4. The power control method according to claim 2, characterized in that: In the case where the target parameter is the DL transmit power of the target network side device, the reference power value of the target parameter adjustment amount includes: The target reference signal transmission power value of the terminal module MT DL of the relay node.

5. The power control method according to claim 2, characterized in that: In the case where the target parameter is the UL transmit power of the terminal served by the target network side device, the reference power value of the target parameter adjustment amount includes: The target reference signal transmit power value of the MT UL of the relay node.

6. The power control method according to any one of claims 1 to 5, characterized in that: The method further comprises at least one of the following: The relay node receives signals from different network-side devices among the at least two network-side devices, and a power difference between received powers of the signals is within a preset range; The relay node forwards signals from different network-side devices among the at least two network-side devices, and a power difference between forwarding powers of the signals is within a preset range; The relay node receives signals from terminals served by different network-side devices among the at least two network-side devices, and a power difference between received powers of the signals is within a preset range; The relay node forwards signals from terminals served by different network-side devices among the at least two network-side devices, and a power difference between forwarding powers of the signals is within a preset range.

7. The power control method according to any one of claims 1 to 6, characterized in that: The method further comprises: In the case where the relay node forwards signals from different network side devices among the at least two network side devices, when the power difference between the forwarding powers of at least two of the signals exceeds a preset range, the relay node adjusts the target parameter so that the power difference between the forwarding powers of each of the signals is within the preset range.

8. The power control method according to any one of claims 1 to 7, characterized in that: The method further comprises: In the case where the relay node forwards signals from terminals served by different network side devices among the at least two network side devices, when the power difference between the forwarding powers of at least two of the signals exceeds a preset range, the relay node adjusts the target parameter so that the power difference between the forwarding powers of each of the signals is within the preset range.

9. The power control method according to any one of claims 1 to 8, characterized in that: In a case where the relay node receives multiple second indication information from different network side devices among the at least two network side devices, and the indication values ​​of the target parameters respectively indicated by the multiple second indication information are different, or the difference between the indication values ​​of the target parameters respectively indicated by the multiple second indication information exceeds a preset value, the method further includes at least one of the following: The relay node determines the current value of the target parameter according to the second indication information sent by the target network side device among the at least two network side devices; The relay node determines the current value of the target parameter according to the maximum value or the minimum value of the indication values ​​of the target parameter respectively indicated by the multiple second indication information; The relay node determines the current value of the target parameter according to an average value of the indication values ​​of the target parameters respectively indicated by the plurality of second indication information; The relay node determines, according to an indication value greater than a first threshold among the indication values ​​of the target parameter respectively indicated by the plurality of second indication information, a current value of the target parameter; The relay node determines the current value of the target parameter according to the indication values ​​of the target parameter respectively indicated by the multiple second indication information that are less than the second threshold.

10. A power control method, characterized in that: The method comprises: The target network side device receives first indication information from a relay node; wherein the relay node is used to forward signals for at least two network side devices, and the at least two network side devices include the target network side device; the first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following: Downlink DL transmit power of the target network side device; an amplification gain of the relay node; DL transmit power of the relay node; The uplink UL receiving power of the target network side device; UL transmit power of the terminal served by the target network side device; The UL transmit power of the relay node.

11. The power control method according to claim 10, characterized in that: The first indication information includes at least one of the following parameters: Target parameter adjustment amount; A target parameter increase indicator is used to indicate an increase in the target parameter; A target parameter reduction indicator is used to indicate a reduction in the target parameter; The target parameter expected by the relay node; The current value of the target parameter; The target parameter adjustment flag is used to indicate whether the target parameter has been adjusted.

12. The power control method according to claim 11, characterized in that: At least one parameter included in the first indication information is effective on at least one of the following associated items: Time domain resources; Frequency domain resources; Airspace resources.

13. The power control method according to claim 11, characterized in that: In the case where the target parameter is the DL transmit power of the target network side device, the reference power value of the target parameter adjustment amount includes: The target reference signal transmission power value of the terminal module MT DL of the relay node.

14. The power control method according to claim 11, characterized in that: In the case where the target parameter is the UL transmit power of the terminal served by the target network side device, the reference power value of the target parameter adjustment amount includes: The target reference signal transmit power value of the MT UL of the relay node.

15. The power control method according to any one of claims 10 to 14, characterized in that: The method further comprises: The target network side device adjusts the target parameter based on the first indication information.

16. A power control device, characterized in that: The device comprises: A sending module, used to send first indication information to a target network side device among at least two network side devices; The first indication information is used to adjust a target parameter, and the target parameter includes at least one of the following: Downlink DL transmit power of the target network side device; Amplification gain of relay nodes; DL transmit power of the relay node; The uplink UL receiving power of the target network side device; UL transmit power of the terminal served by the target network side device; UL transmit power of the relay node.

17. A power control device, characterized in that: The device comprises: A receiving module, configured to receive first indication information from a relay node; wherein the relay node is configured to forward signals for at least two network side devices, wherein the at least two network side devices include the target network side device; and the first indication information is configured to adjust a target parameter, wherein the target parameter includes at least one of the following: Downlink DL transmit power of the target network side device; an amplification gain of the relay node; DL transmit power of the relay node; The uplink UL receiving power of the target network side device; UL transmit power of the terminal served by the target network side device; The UL transmit power of the relay node.

18. A relay node, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the power control method according to any one of claims 1 to 9 are implemented.

19. A network side device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the power control method according to any one of claims 10 to 15 are implemented.

20. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the power control method as described in any one of claims 1 to 9, or implements the steps of the power control method as described in any one of claims 10 to 15.

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