Communication method, apparatus and system, chip, storage medium and program product

Abstract

A communication method, apparatus and system, a chip, a storage medium and a program product. A network device indicates a power adjustment amount, so that a terminal device can obtain new transmit power on the basis of initial transmit power and the power adjustment amount, and perform uplink communication with the new transmit power, thereby flexibly adjusting the transmit power of the terminal device.

Description

Communication method, device, system, chip, storage medium and program product

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 15, 2023, with application number 202311736513.4 and invention name “Communication method, device, system, chip, storage medium and program product”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method, device, system, chip, storage medium and program product. Background Art

[0003] When the terminal device communicates with the satellite, its transmission power is determined by the terminal device's transmission power P CMAX,c The power fallback amount is determined by a parameter P-mac indicated by the network side through radio resource control (RRC) signaling. For terminal devices that do not support RRC reconfiguration, that is, after configuring RRC signaling once, it will not be updated again in the connected state. If it is in the connected state for a long time, the network side will configure a conservative P-mac, that is, the calculated power fallback amount will make the terminal device fall back to 23dBm, otherwise there will be a risk of not meeting the radiation requirements, which greatly limits the flexibility of power adjustment of high-power terminals. Summary of the Invention

[0004] The present application provides a communication method, apparatus, system, chip, storage medium, and program product, so that the transmission power of a terminal device can be flexibly determined.

[0005] In a first aspect, a communication method is provided, which is implemented by a terminal device, or a chip or circuit used for a terminal device.

[0006] The method includes: obtaining a first transmission power; receiving first information, wherein the first information is used to indicate a first power adjustment amount; and performing uplink communication at a second transmission power, wherein the second transmission power is obtained based on the first transmission power and the first information.

[0007] In this aspect, the terminal device receives a power adjustment amount indicated by the network device, and can obtain a new transmit power based on the initial transmit power and the power adjustment amount, and perform uplink communication at the new transmit power, thereby flexibly adjusting the transmit power of the terminal device. The new transmit power can be higher than 23dBm, so that the terminal device can transmit at high power.

[0008] In a possible implementation, the first transmit power is based on a maximum transmit power configured for the network device.

[0009] In this implementation, the network device may configure the maximum transmit power according to the capability of the terminal device, and the terminal device may determine the actual first transmit power according to the maximum transmit power.

[0010] In another possible implementation, the first transmit power is the maximum transmit power, the minimum transmit power or the intermediate value of the transmit power of the terminal device, wherein the intermediate value of the transmit power refers to the intermediate value between the maximum transmit power and the minimum transmit power.

[0011] In this implementation, the network device may not be configured with a maximum transmit power, or the terminal device may not adopt the maximum transmit power configured by the network device. The terminal device obtains its own maximum transmit power, minimum transmit power or the middle value of the transmit power as the actual first transmit power.

[0012] In another possible implementation, the first information is further used to indicate a valid period of the first power adjustment amount.

[0013] Exemplarily, the effective period includes at least one of the following information: effective start time, effective duration, and effective end time.

[0014] In this implementation, in order to meet human body radiation requirements, the network device may further indicate, through the first information, the effective period of the first power adjustment amount, so as to prevent the terminal device from always transmitting at high power.

[0015] In another possible implementation, the first information is further used to indicate a validity period of the first power adjustment amount.

[0016] In another possible implementation, the first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0017] In yet another possible implementation, the method further includes: receiving second information, where the second information is used to indicate a validity period of the first power adjustment amount.

[0018] In another possible implementation, the second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

[0019] In this implementation, the second information may indicate the effective duration of the first power adjustment amount or a basic amount of the effective duration of the first power adjustment amount. When the second information indicates the basic amount of the effective duration of the first power adjustment amount, the effective duration of the first power adjustment amount is equal to the sum of the basic amount and the offset of the effective duration indicated by the first information.

[0020] In another possible implementation, the first power adjustment amount takes effect after a first time after receiving the first information; or the first power adjustment amount takes effect after a second time after sending the third information; or the first power adjustment amount takes effect when sending the third information; or the first power adjustment amount takes effect when the first sending power is invalid; wherein, the third information is used to indicate whether the first information is successfully received.

[0021] In this implementation, since the terminal device needs to parse the first information after receiving it, a start time for the first power adjustment amount to take effect is specified to accurately perform power adjustment. If the first transmit power is also determined based on an instruction from the network device, the first power adjustment amount can take effect when the first transmit power is invalid.

[0022] In another possible implementation, the starting effective time of the first power adjustment amount is the starting time of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or the first uplink subframe after the end effective time of the first transmit power.

[0023] In this implementation, in order to accurately perform power adjustment, the starting effective time of the first power adjustment amount is specified to be the starting time of the first uplink subframe.

[0024] In yet another possible implementation, the method further includes: sending fourth information, where the fourth information is used to indicate whether sending in the first power mode is supported.

[0025] In this implementation, after the terminal device is scheduled to transmit at high power for a period of time, the terminal device can count the duration of the high power transmission and send fourth information indicating whether it supports transmission in the first power mode. The first power mode is a high power transmission mode.

[0026] In another possible implementation, the fourth information is carried in at least one of the following information: a buffer status report, hybrid automatic repeat request (HARQ) feedback information, or a random access request.

[0027] In this implementation, whether transmission in the first power mode is supported may be indicated in an explicit or implicit manner through the fourth information.

[0028] In another possible implementation, the cache status report uses a first scrambling method to indicate whether transmission in the first power mode is supported.

[0029] In this implementation, whether transmission in the first power mode is supported is indicated implicitly, which can save indication overhead.

[0030] In another possible implementation, the hybrid automatic repeat request feedback information adopts a first scrambling method to indicate whether transmission in the first power mode is supported.

[0031] In this implementation, whether transmission in the first power mode is supported is indicated implicitly, which can save indication overhead.

[0032] In another possible implementation, the fourth information is a first random access preamble sequence to indicate whether transmission in the first power mode is supported.

[0033] In this implementation, whether transmission in the first power mode is supported is indicated implicitly, which can save indication overhead.

[0034] In another possible implementation, the first power adjustment amount is a positive value or a negative value.

[0035] In another possible implementation, the first information includes an index corresponding to the first power adjustment amount, or the first information includes a power level corresponding to the second transmit power.

[0036] In another possible implementation, the first information is any one of the following: a medium access control control element (MAC CE) or downlink control information (DCI).

[0037] In a second aspect, a communication method is provided, which is implemented by a network device, or a chip or circuit used for a network device.

[0038] The method includes: sending first information, where the first information is used to indicate a first power adjustment amount; and receiving an uplink signal from a terminal device, where the uplink signal is sent by the terminal device at a second transmission power, and the second transmission power is obtained based on the first transmission power and the first information.

[0039] Exemplarily, the first transmission power is a transmission power determined before the terminal device receives the first information.

[0040] In this aspect, the network device indicates a power adjustment amount, and the terminal device can obtain a new transmit power based on the initial transmit power and the power adjustment amount, and perform uplink communication at the new transmit power, thereby flexibly adjusting the transmit power of the terminal device. The new transmit power can be higher than 23dBm, so that the terminal device can transmit at high power.

[0041] In a possible implementation, the first transmit power is based on a maximum transmit power configured for the network device.

[0042] In this implementation, the network device may configure the maximum transmit power according to the capability of the terminal device, and the terminal device may determine the actual first transmit power according to the maximum transmit power.

[0043] In another possible implementation, the first transmit power is the maximum transmit power, the minimum transmit power or the intermediate value of the transmit power of the terminal device, wherein the intermediate value of the transmit power refers to the intermediate value between the maximum transmit power and the minimum transmit power.

[0044] In this implementation, the network device may not be configured with a maximum transmit power, or the terminal device may not adopt the maximum transmit power configured by the network device. The terminal device obtains its own maximum transmit power, minimum transmit power or the middle value of the transmit power as the actual first transmit power.

[0045] In another possible implementation, the first information is further used to indicate a valid period of the first power adjustment amount.

[0046] Exemplarily, the effective period includes at least one of the following information: effective start time, effective duration, and effective end time.

[0047] In this implementation, in order to meet human body radiation requirements, the network device may further indicate, through the first information, the effective period of the first power adjustment amount, so as to prevent the terminal device from always transmitting at high power.

[0048] In another possible implementation, the first information is further used to indicate a validity period of the first power adjustment amount.

[0049] In another possible implementation, the first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0050] In yet another possible implementation, the method further includes: sending second information, where the second information is used to indicate a validity period of the first power adjustment amount.

[0051] In another possible implementation, the second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

[0052] In this implementation, the second information may indicate the effective duration of the first power adjustment amount or a basic amount of the effective duration of the first power adjustment amount. When the second information indicates the basic amount of the effective duration of the first power adjustment amount, the effective duration of the first power adjustment amount is equal to the sum of the basic amount and the offset of the effective duration indicated by the first information.

[0053] In another possible implementation, the first power adjustment amount takes effect after a first time after the terminal device receives the first information; or the first power adjustment amount takes effect after a second time after the terminal device sends the third information; or the first power adjustment amount takes effect when the terminal device sends the third information; or the first power adjustment amount takes effect when the first sending power is invalid; wherein, the third information is used to indicate whether the first information is successfully received.

[0054] In this implementation, since the terminal device needs to parse the first information after receiving it, a start time for the first power adjustment amount to take effect is specified to accurately perform power adjustment. If the first transmit power is also determined based on an instruction from the network device, the first power adjustment amount can take effect when the first transmit power is invalid.

[0055] In another possible implementation, the starting effective time of the first power adjustment amount is the starting time of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after the terminal device receives the first information; or the first uplink subframe after the second time after the terminal device sends the third information; or the first uplink subframe after the terminal device sends the third information; or the first uplink subframe after the end effective time of the first transmit power.

[0056] In this implementation, in order to accurately perform power adjustment, the starting effective time of the first power adjustment amount is specified to be the starting time of the first uplink subframe.

[0057] In yet another possible implementation, the method further includes: receiving fourth information, where the fourth information is used to indicate whether sending in the first power mode is supported.

[0058] In this implementation, after the terminal device is scheduled to transmit at high power for a period of time, the terminal device can count the duration of the high power transmission and send fourth information indicating whether it supports transmission in the first power mode. The first power mode is a high power transmission mode.

[0059] In another possible implementation, the fourth information is carried in at least one of the following information: a buffer status report, hybrid automatic repeat request feedback information, or a random access request.

[0060] In this implementation, whether transmission in the first power mode is supported may be indicated in an explicit or implicit manner through the fourth information.

[0061] In another possible implementation, the cache status report uses a first scrambling method to indicate whether transmission in the first power mode is supported.

[0062] In this implementation, whether transmission in the first power mode is supported is indicated implicitly, which can save indication overhead.

[0063] In another possible implementation, the hybrid automatic repeat request feedback information adopts a first scrambling method to indicate whether transmission in the first power mode is supported.

[0064] In this implementation, whether transmission in the first power mode is supported is indicated implicitly, which can save indication overhead.

[0065] In another possible implementation, the fourth information is a first random access preamble sequence to indicate whether transmission in the first power mode is supported.

[0066] In this implementation, whether transmission in the first power mode is supported is indicated implicitly, which can save indication overhead.

[0067] In another possible implementation, the first power adjustment amount is a positive value or a negative value.

[0068] In another possible implementation, the first information includes an index corresponding to the first power adjustment amount, or the first information includes a power level corresponding to the second transmit power.

[0069] In another possible implementation, the first information is any one of the following: MAC CE, or DCI.

[0070] In a third aspect, a communication device is provided for implementing the communication method in the above-mentioned first aspect or any one of the implementations of the first aspect. The device can be a terminal device, or a module applied to a terminal device (such as a processor, a chip, or a chip system, etc.), or a logical node, a logical module, or software that can implement all or part of the terminal device. In one implementation, the communication device may include a sending unit, a receiving unit, and may also include a processing unit. The sending unit and the receiving unit may be independent or combined together (which may be referred to as a "transceiver unit").

[0071] In a fourth aspect, a communication device is provided for implementing the communication method in the second aspect or any one of the implementations of the second aspect. The device may be a network device, or a module (such as a processor, a chip, or a chip system, etc.) applied to a network device, or a logical node, a logical module, or software that can implement all or part of the functions of a network device. In one implementation, the communication device may include a sending unit, a receiving unit, and may also include a processing unit. The sending unit and the receiving unit may be independent or combined together (which may be referred to as a "transceiver unit").

[0072] In a possible implementation, the communication device in the third to fourth aspects includes a module for respectively executing the method in any one of the first and second aspects or any implementation thereof.

[0073] In which, when the communication device is used to implement the method described in the first aspect or any one of the implementations of the first aspect, the processing unit is used to obtain a first transmission power; the transceiver unit is used to receive first information, and the first information is used to indicate a first power adjustment amount; and the transceiver unit is also used to perform uplink communication at a second transmission power, and the second transmission power is obtained based on the first transmission power and the first information.

[0074] Optionally, the first transmit power is based on a maximum transmit power configured for the network device.

[0075] Optionally, the first transmit power is the maximum transmit power, the minimum transmit power or the intermediate value of the transmit power of the terminal device, wherein the intermediate value of the transmit power refers to the intermediate value between the maximum transmit power and the minimum transmit power.

[0076] Optionally, the first information is further used to indicate a valid period of the first power adjustment amount.

[0077] Exemplarily, the effective period includes at least one of the following information: effective start time, effective duration, and effective end time.

[0078] Optionally, the first information is further used to indicate the validity period of the first power adjustment amount.

[0079] Optionally, the first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0080] Optionally, the transceiver unit is further used to receive second information, where the second information is used to indicate the validity period of the first power adjustment amount.

[0081] Optionally, the second information includes the validity period of the first power adjustment amount, or includes a basic amount of the validity period of the first power adjustment amount.

[0082] Optionally, the first power adjustment amount takes effect after a first time after receiving the first information; or the first power adjustment amount takes effect after a second time after sending the third information; or the first power adjustment amount takes effect when sending the third information; or the first power adjustment amount takes effect when the first sending power is invalid; wherein, the third information is used to indicate whether the first information is successfully received.

[0083] Optionally, the starting effective time of the first power adjustment amount is the starting time of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or the first uplink subframe after the end effective time of the first transmit power.

[0084] Optionally, the transceiver unit is further used to send fourth information, where the fourth information is used to indicate whether sending in the first power mode is supported.

[0085] Optionally, the fourth information is carried in at least one of the following information: a buffer status report, HARQ feedback information, or a random access request.

[0086] In which, when the communication device is used to implement the method described in the second aspect or any one of the implementations of the second aspect, the transceiver unit is used to send first information, where the first information is used to indicate a first power adjustment amount; and receive an uplink signal from a terminal device, where the uplink signal is sent by the terminal device at a second transmission power, and the second transmission power is obtained based on the first transmission power and the first information.

[0087] Exemplarily, the first transmission power is a transmission power determined before the terminal device receives the first information.

[0088] Optionally, the first transmit power is based on a maximum transmit power configured for the network device.

[0089] Optionally, the first transmit power is the maximum transmit power, the minimum transmit power or the intermediate value of the transmit power of the terminal device, wherein the intermediate value of the transmit power refers to the intermediate value between the maximum transmit power and the minimum transmit power.

[0090] Optionally, the first information is further used to indicate a valid period of the first power adjustment amount.

[0091] Exemplarily, the effective period includes at least one of the following information: effective start time, effective duration, and effective end time.

[0092] Optionally, the first information is further used to indicate the validity period of the first power adjustment amount.

[0093] Optionally, the first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0094] Optionally, the transceiver unit is further configured to send second information, where the second information is used to indicate a validity period of the first power adjustment amount.

[0095] Optionally, the second information includes the validity period of the first power adjustment amount, or includes a basic amount of the validity period of the first power adjustment amount.

[0096] Optionally, the first power adjustment amount takes effect after a first time after receiving the first information; or the first power adjustment amount takes effect after a second time after sending the third information; or the first power adjustment amount takes effect when sending the third information; or the first power adjustment amount takes effect when the first sending power is invalid; wherein, the third information is used to indicate whether the first information is successfully received.

[0097] Optionally, the starting effective time of the first power adjustment amount is the starting time of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or the first uplink subframe after the end effective time of the first transmit power.

[0098] Optionally, the transceiver unit is further used to receive fourth information, where the fourth information is used to indicate whether sending in the first power mode is supported.

[0099] Optionally, the fourth information is carried in at least one of the following information: a buffer status report, HARQ feedback information, or a random access request.

[0100] Wherein, when the communication device is used to implement the method described in the second aspect or any one of the implementations of the second aspect,

[0101] In another possible implementation, the communication device in the third and fourth aspects includes a processor coupled to a memory; the processor is configured to enable the device to perform the corresponding functions in the above-mentioned communication method. The memory is coupled to the processor and stores the necessary programs (instructions) and / or data for the device. Optionally, the communication device may further include a communication interface for enabling communication between the device and other network elements. Optionally, the memory may be located inside or outside the communication device.

[0102] In another possible implementation, the communication device in the third to fourth aspects includes a processor and a transceiver, the processor being coupled to the transceiver, and the processor being used to execute a computer program or instruction to control the transceiver to receive and send information; when the processor executes the computer program or instruction, the processor is also used to implement the above method through a logic circuit or executing code instructions. The transceiver may be a transceiver, a transceiver circuit, or an input / output interface, configured to receive signals from other communication devices other than the communication device and transmit them to the processor, or to send signals from the processor to other communication devices other than the communication device. When the communication device is a chip, the transceiver is a transceiver circuit or an input / output interface.

[0103] When the communication device in the third and fourth aspects above is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication device is a terminal, the sending unit may be a transmitter or a transmitter; and the receiving unit may be a receiver or a receiver.

[0104] In a fifth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer program or instruction is executed, the methods described in the above aspects are implemented.

[0105] In a sixth aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, causes the communication device to execute the methods described in the above aspects.

[0106] In a seventh aspect, a communication system is provided, which includes the communication device described in the third aspect and the communication device described in the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] FIG1 is a simplified schematic diagram of a wireless communication system provided by an embodiment of the present application;

[0108] Figures 2a-2c are schematic diagrams of application scenarios of satellite-ground fusion networks;

[0109] FIG3 is a flow chart of a communication method provided in an embodiment of the present application;

[0110] FIG4 is a flow chart of another communication method provided in an embodiment of the present application;

[0111] FIG5 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0112] FIG6 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0113] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0114] The technology provided by this application can be applied to various communication systems. For example, the communication system can be a fourth generation (4 th generation, 4G) communication systems (such as long term evolution (LTE) systems), fifth generation (5 th The 5G communication system is also called the new radio (NR) system.

[0115] A network element in a communication system can send a signal to another network element or receive a signal from another network element. The signal may include information, signaling, or data, etc. The network element can also be replaced by an entity, a network entity, a device, a terminal device, a communication module, a node, a communication node, etc. The present application uses the network element as an example for description. For example, the communication system may include at least one terminal device and at least one access network device. The access network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the access network device. In addition, it can be understood that if the communication system includes multiple terminal devices, the multiple terminal devices can also send signals to each other, that is, the signal sending network element and the signal receiving network element can both be terminal devices.

[0116] The communication method provided in the embodiment of the present application can be applied to wireless communication systems such as 5G, future communication networks, and satellite communications. Referring to Figure 1, Figure 1 is a simplified schematic diagram of the wireless communication system provided in the embodiment of the present application. As shown in Figure 1, the wireless communication system includes a radio access network (RAN) 100. The radio access network 100 may be a radio access network of a future communication network, or a traditional (e.g., 5G, 4G) radio access network. One or more terminal devices (120a-120g, collectively referred to as 120) may be connected to each other, or to one or more network devices (110a~110c, collectively referred to as 110) in the radio access network 100, and the connection method may be wired or wireless. Optionally, Figure 1 is only a schematic diagram, and the wireless communication system may also include other devices, such as core network devices, wireless relay devices and / or wireless backhaul devices, which are not shown in Figure 1.

[0117] Optionally, in actual applications, the wireless communication system may include multiple network devices (also called access network devices) and multiple terminal devices at the same time. A network device can serve one or more terminal devices at the same time. A terminal device can also access one or more network devices at the same time. The embodiments of the present application do not limit the number of terminal devices and network devices included in the wireless communication system.

[0118] The network device may be an entity on the network side for transmitting or receiving signals. The network device may be an access device for a terminal device to access the wireless communication system in a wireless manner, such as a base station. Base station can broadly cover various names as follows, or be replaced with the following names, such as: RAN node, NodeB, evolved NodeB (eNB), next generation NodeB (gNB), satellite base station, access network equipment in open radio access network (O-RAN), relay station, access point, transmission point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, building baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), centralized unit (CU), distributed unit (DRU), etc. unit, DU), radio unit (radio unit, RU), centralized unit control plane (CU control plane, CU-CP) node, centralized unit user plane (CU user plane, CU-UP) node, positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The network device can also refer to a communication module, a modem or a chip for being set in the aforementioned device or apparatus. The network device can also be a mobile switching center and a device that performs the base station function in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network side device in a future communication network, and a device that performs the base station function in a future communication system. The network device can support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0119] Network devices can be fixed or mobile. For example, base stations 110b and 110c are stationary and are responsible for wireless transmission and reception in one or more cells from terminal device 120. The helicopter or drone 120c shown in Figure 1 can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station 120c. In other examples, the helicopter or drone (120c) can be configured to act as a terminal device communicating with satellite base station 110a.

[0120] In this application, the communication device used to implement the above-mentioned access network function can be an access network device, a network device having some of the access network functions, or a device capable of supporting the implementation of the access network function, such as a chip system, a hardware circuit, a software module, or a hardware circuit and a software module. The device can be installed in the access network device or used in combination with the access network device. In the method of this application, the communication device used to implement the access network device function is described as an access network device.

[0121] A terminal device may be an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may be used to connect people, objects, and machines. The terminal device may communicate with one or more core networks through a network device. The terminal device includes a handheld device with wireless connection capabilities, other processing devices connected to a wireless modem, or a vehicle-mounted device. The terminal device may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device. The terminal device 120 may be widely used in various scenarios, such as cellular communication, D2D, V2X, point-to-point (P2P), machine-to-machine (M2M), machine type communication (MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc.Some examples of the terminal device 120 include: user equipment (UE) of the 3GPP standard, fixed equipment, mobile equipment, handheld equipment, wearable equipment, cellular phones, smart phones, session initiated protocol (SIP) phones, laptops, personal computers, smart books, vehicles, satellites, global positioning system (GPS) equipment, target tracking equipment, drones, helicopters, aircraft, ships, remote control equipment, smart home equipment, industrial equipment, personal communication service (PCS) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), wireless network cameras, tablet computers, handheld computers, mobile internet devices (MIDs), wearable devices such as smart watches, VR devices, AR devices, wireless terminals in industrial control, terminals in vehicle networking systems, wireless terminals in self-driving cars, wireless terminals in smart grids, wireless terminals in transportation safety, and smart cities. The terminal device 120 may be a wireless terminal in a city, such as a smart gas pump, a terminal device on a high-speed rail, and a wireless terminal in a smart home, such as a smart speaker, a smart coffee machine, a smart printer, etc. The terminal device 120 may be a wireless device in the above various scenarios or a device for being set in a wireless device, for example, a communication module, a modem or a chip in the above device. The terminal device may also be referred to as a terminal, a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. The terminal device may also be a terminal device in a future wireless communication system. The terminal device may be used in a dedicated network device or a general device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0122] Alternatively, a terminal device can function as a base station. For example, a UE can act as a dispatching entity, providing sidelink signals between UEs in V2X, D2D, or P2P scenarios. As shown in Figure 1, a cell phone 120a and a car 120b communicate with each other using sidelink signals. Cell phone 120a and smart home device 120e communicate without relaying the communication signals through base station 110b.

[0123] In this application, the communication device used to implement the functions of the terminal device can be a terminal device, or a terminal device with some of the functions of the above terminal devices, or a device that can support the implementation of the functions of the above terminal devices, such as a chip system, which can be installed in the terminal device or used in combination with the terminal device. In this application, the chip system can be composed of chips, or it can include chips and other discrete devices. In the technical solution provided in this application, the communication device is described as a terminal device or UE as an example.

[0124] Optionally, a wireless communication system is typically composed of cells, with base stations providing cell management and communication services to multiple mobile stations (MS) in the cell. The base station includes a baseband unit (BBU) and a remote radio unit (RRU). The BBU and RRU can be placed in different locations, for example: the RRU is remote and placed in an area with high traffic volume, while the BBU is placed in a central computer room. The BBU and RRU can also be placed in the same computer room. The BBU and RRU can also be different components under the same rack. Optionally, a cell can correspond to a carrier or component carrier.

[0125] In some deployments, the network devices mentioned in the embodiments of this application may include a CU, a DU, a CU and a DU, or a CU-CP, a CU-UP, or a DU node. For example, the network devices may include a gNB-CU-CP, a gNB-CU-UP, and a gNB-DU.

[0126] In some deployments, multiple RAN nodes collaborate to assist terminals in achieving wireless access, with different RAN nodes implementing portions of the base station's functionality. For example, a RAN node can be a CU, DU, CU-CP, CU-UP, or RU. The CU and DU can be separate or included in the same network element, such as the BBU. The RU can be included in a radio frequency device or radio unit, such as an RRU, AAU, or RRH.

[0127] The RAN node may support one or more types of fronthaul interfaces, and different fronthaul interfaces correspond to DUs and RUs with different functions. If the fronthaul interface between the DU and the RU is a common public radio interface (CPRI), the DU is configured to implement one or more baseband functions, and the RU is configured to implement one or more radio frequency functions. If the fronthaul interface between the DU and the RU is another type of interface, relative to the CPRI, some of the downlink and / or uplink baseband functions, such as precoding, digital beamforming (BF), or one or more of inverse fast Fourier transform (IFFT) / cyclic prefix (CP) for downlink, are moved from the DU to the RU for implementation; and for uplink, one or more of digital beamforming (BF), or fast Fourier transform (FFT) / CP removal are moved from the DU to the RU for implementation. In one possible implementation, the interface may be an enhanced common public radio interface (eCPRI). In the eCPRI architecture, the division between the DU and RU is different, corresponding to different types (category, Cat) of eCPRI, such as eCPRI Cat A, B, C, D, E, and F.

[0128] Taking eCPRI Cat A as an example, for downlink transmission, based on layer mapping, the DU is configured to implement layer mapping and one or more functions preceding it (i.e., one or more of coding, rate matching, scrambling, modulation, and layer mapping). Other functions after layer mapping (e.g., RE mapping, digital beamforming (BF), or one or more of inverse fast Fourier transform (IFFT) / cyclic prefix (CP) addition) are moved to the RU for implementation. For uplink transmission, based on RE demapping, the DU is configured to implement demapping and one or more functions preceding it (i.e., one or more of decoding, rate matching, descrambling, demodulation, inverse discrete Fourier transform (IDFT), channel equalization, and RE demapping). Other functions after demapping (e.g., one or more of digital BF or FFT / CP removal) are moved to the RU for implementation. It is understandable that for the functional description of DU and RU corresponding to various types of eCPRI, reference can be made to the eCPRI protocol, which will not be described in detail here.

[0129] In one possible design, the processing unit for implementing baseband functions in the BBU is called a baseband high layer (BBH) unit, and the processing unit for implementing baseband functions in the RRU / AAU / RRH is called a baseband low layer (BBL) unit.

[0130] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0131] In the embodiments of the present application, the device for implementing the functions of the network device can be a network device; it can also be a device that can support the network device to implement the functions, such as a chip system, a hardware circuit, a software module, or a hardware circuit and a software module. The device can be installed in the network device or used in conjunction with the network device. In the embodiments of the present application, only the device for implementing the functions of the network device is used as an example to illustrate, and does not constitute a limitation on the solutions of the embodiments of the present application.

[0132] It is understandable that the present application can be applied between network devices and terminal devices.

[0133] The communication between the network device and the terminal device follows a certain protocol layer structure. The protocol layer structure may include a control plane protocol layer structure and a user plane protocol layer structure. For example, the control plane protocol layer structure may include the functions of the radio resource control (RRC) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical layer. For example, the user plane protocol layer structure may include the functions of the PDCP layer, the RLC layer, the MAC layer, and the physical layer. In one possible implementation, a service data adaptation protocol (SDAP) layer may also be included above the PDCP layer.

[0134] Optionally, the protocol layer structure between the network device and the terminal device may further include an artificial intelligence (AI) layer for transmitting data related to AI functions.

[0135] Taking data transmission between network devices and terminal devices as an example, data transmission needs to pass through the user plane protocol layers, such as the SDAP layer, PDCP layer, RLC layer, MAC layer, and physical layer. The SDAP layer, PDCP layer, RLC layer, MAC layer, and physical layer can also be collectively referred to as the access layer. Data transmission is divided into sending or receiving based on the direction of transmission, and each of these layers is further divided into a sending part and a receiving part. Taking downlink data transmission as an example, after the PDCP layer obtains data from the upper layer, it transmits the data to the RLC layer and MAC layer. The MAC layer then generates a transport block, which is then wirelessly transmitted through the physical layer. Data is encapsulated accordingly in each layer. For example, data received by a layer from the layer above it is considered a service data unit (SDU) of that layer. After encapsulation by that layer, it becomes a protocol data unit (PDU) and is then passed to the next layer.

[0136] For example, a terminal device may also include an application layer and a non-access layer. The application layer can be used to provide services to applications installed in the terminal device. For example, downlink data received by the terminal device can be sequentially transmitted from the physical layer to the application layer, which then provides it to the application. For another example, the application layer can obtain data generated by the application and sequentially transmit the data to the physical layer for transmission to other communication devices. The non-access layer can be used to forward user data, such as forwarding uplink data received from the application layer to the SDAP layer, or forwarding downlink data received from the SDAP layer to the application layer.

[0137] It should be understood that the number and type of each device in the communication system shown in Figure 1 are for illustration only, and the present application is not limited to this. In actual applications, the communication system may also include more terminal devices, more access network devices, and other network elements, such as core network devices, and / or network elements for implementing artificial intelligence functions.

[0138] It is understandable that all or part of the functions implemented by one or more of the terminal equipment, access network equipment, core network equipment, or network elements for implementing artificial intelligence functions can be virtualized, that is, implemented by one or more of the proprietary processors or general-purpose processors and the corresponding software modules. Among them, since the terminal equipment and the access network equipment involve interfaces for air interface transmission, the transceiver functions of the interfaces can be implemented by hardware. Core network equipment, such as operation administration and maintenance (OAM) network elements, can be virtualized. Optionally, one or more functions of the virtualized terminal equipment, access network equipment, core network equipment, or network elements for implementing artificial intelligence functions can be implemented by cloud devices, such as cloud devices in over the top (OTT) systems.

[0139] Satellite communications have been introduced as a 5G communication scenario, known as non-terrestrial networks (NTNs). These networks support not only various 5G devices but also IoT devices. Satellite communications offer unique advantages over terrestrial communications, such as wider coverage and reduced vulnerability to natural disasters and external forces. Incorporating satellite communications into future 5G networks could provide communication services in areas beyond the reach of terrestrial networks, such as oceans and forests. The integration of satellite communications into 5G networks could enhance the reliability of 5G communications, providing higher-quality services for users on airplanes and trains. Furthermore, it could provide more data transmission resources and increase network speeds. Therefore, supporting both terrestrial and satellite communications is an inevitable trend for future 5G communications, offering significant benefits in terms of wide coverage, reliability, multiple connections, and high throughput.

[0140] As shown in Figures 2a to 2c, this is a schematic diagram of the application scenario of the satellite-ground integrated network. Terminal devices on the ground can access the network through the air interface (the air interface can be various types of air interfaces, such as a 5G air interface). In Figure 2a, the base station can be deployed on the ground and connected to the ground station that communicates with the satellite; in Figure 2b, the base station can be deployed on the satellite. The satellite is connected to the ground station via a wireless link. The ground station and the ground base station are connected to the core network via wired or wireless. There can be a wireless link between satellites. If the satellite only has a transparent transmission and forwarding function (that is, the corresponding base station is deployed on the ground), only transparent transmission and forwarding are realized between satellites; if the base station or part of the base station function is deployed on the satellite, the satellites can complete the signaling interaction and user data transmission between base stations, as shown in Figure 2c.

[0141] Terminal devices must meet specific absorption rate (SAR) requirements, specifically those related to human radiation exposure. A strict process is currently in place to ensure that high-power uplink transmissions by terminal devices do not exceed a certain percentage. The default uplink signal power for terminal devices is 23dBm. If the power exceeds 23dBm, power reduction is required, either through protocol agreement or network-side instructions. This is because excessively high power transmissions over a given period of time will violate the human radiation exposure requirements.

[0142] In the NTN scenario, due to the poor link budget of satellite communication, for IoT terminal devices, the number of repetitions of uplink data is generally greater than 2, and the transmission power of the terminal device is P CMAX,c Among them, P CMAX,c There are corresponding upper and lower limits, which can meet the requirements of human radiation (P CMAX,cThe calculation formula includes multiple parameters such as power backoff to limit its upper limit), as well as various other RF indicators (such as interference, etc.).

[0143] The power backoff amount for a terminal device's transmit power is determined by a parameter, P-mac, indicated by the network via RRC signaling. For terminal devices that do not support RRC reconfiguration, once configured with RRC signaling, the value is not updated again while connected. If the device remains connected for an extended period, the network configures a conservative P-mac. This calculated power backoff will cause the terminal device to fall back to 23dBm. Otherwise, there's a risk of not meeting radiation requirements, significantly limiting the flexibility of power adjustment for high-power terminals.

[0144] The present application provides a power adjustment solution, in which the network device indicates the power adjustment amount, so that the terminal device can obtain a new transmission power based on the initial transmission power and the power adjustment amount, and perform uplink communication with the new transmission power, thereby flexibly adjusting the transmission power of the terminal device.

[0145] As shown in Figure 3, a flow chart of a communication method provided in an embodiment of the present application is shown. Exemplarily, the method may include the following steps:

[0146] S301. The terminal device obtains a first transmission power.

[0147] Exemplarily, the terminal device may obtain the first transmit power during actual uplink communication through the following implementations:

[0148] One implementation is that the first transmission power is based on the maximum transmission power P configured by the network device. EMAX,c Specifically, the network device can configure the maximum transmission power P according to the capabilities of the terminal device. EMAX,c , the terminal device can determine the actual first transmission power based on the maximum transmission power.

[0149] For example, for a terminal device with a number of repeated transmissions greater than 2, the first transmission power is equal to P CMAX,c , the P CMAX,c There is an upper limit and a lower limit, both of which are related to the maximum transmit power P EMAX,c Related.

[0150] In another implementation, the first transmit power is the maximum transmit power of the terminal device. The network device may not be configured with a maximum transmit power, or the terminal device may not adopt the maximum transmit power configured by the network device. The terminal device may obtain a maximum transmit power determined based on its own capabilities and historical transmit power information as the actual first transmit power.

[0151] In another implementation, the first transmit power is the minimum transmit power of the terminal device. The network device may not be configured with a maximum transmit power, or the terminal device may not adopt the maximum transmit power configured by the network device. The terminal device may obtain a minimum transmit power determined based on its own capabilities and historical transmit power information as the actual first transmit power to meet human body radiation requirements.

[0152] In another implementation, the first transmit power is the median transmit power of the terminal device. The median transmit power refers to the median between the maximum transmit power and the minimum transmit power. The network device may not be configured with a maximum transmit power, or the terminal device may not use the maximum transmit power configured by the network device. Instead, the terminal device may use the median transmit power value determined based on its own capabilities and historical transmit power information as the actual first transmit power to meet human body radiation requirements.

[0153] It can be understood that, relative to the subsequent dynamic adjustment of the transmit power, the first transmit power may be an initial transmit power or a static transmit power.

[0154] S302: The network device sends first information to the terminal device. Correspondingly, the terminal device receives the first information.

[0155] The network device can send first information to the terminal device based on scheduling requirements, channel status, etc., instructing the terminal device to adjust the transmission power.

[0156] In one implementation, the first information is used to indicate a first power adjustment amount.

[0157] The first power adjustment amount can be a positive value or a negative value, that is, it can increase the transmission power of the terminal device or reduce the transmission power of the terminal device.

[0158] For example, the first transmission power is based on the maximum transmission power P configured by the network device. EMAX,c In the case of the first power adjustment amount, the first power adjustment amount can be a positive value (raising amount) or a negative value (falling back amount).

[0159] For the case where the first transmission power is the maximum transmission power of the terminal device, the first power adjustment amount is a negative value.

[0160] For the case where the first transmission power is the minimum transmission power of the terminal device, the first power adjustment amount is a positive value.

[0161] In the case where the above-mentioned first transmission power is an intermediate value of the transmission power of the terminal device, the first power adjustment amount can be a positive value or a negative value.

[0162] The first information is used to indicate a first power adjustment amount. Optionally, a correspondence between one or more indexes and one or more power adjustment amounts may be pre-stored or pre-configured in the terminal device. The first information includes the index corresponding to the first power adjustment amount, thereby saving signaling overhead. The terminal device can determine the first power adjustment amount corresponding to the index based on the index corresponding to the first power adjustment amount included in the first information.

[0163] In another implementation, a correspondence between one or more power levels and one or more transmit powers may be pre-stored or pre-configured in the terminal device, and the first information may include the power level corresponding to the second transmit power. After receiving the first information, the terminal device may determine the second transmit power based on the power level indicated in the first information.

[0164] Exemplarily, the first information may be carried in MAC CE or DCI.

[0165] Optionally, the terminal device may also report its high-power transmission capability to the network device, including the different high-power levels supported. For example, the first high-power level is 26dBm, the second high-power level is 29dBm, and the third high-power level is 32dBm. The network device may determine whether to instruct the terminal device to adjust the transmit power based on the terminal device's capabilities.

[0166] S303: The terminal device performs uplink communication at the second transmission power. Accordingly, the network device receives an uplink signal from the terminal device.

[0167] The second transmission power is obtained according to the first transmission power and the first information.

[0168] The uplink signal is sent by the terminal device at the second transmission power.

[0169] It is understandable that, relative to the first transmit power, the second transmit power may be considered a new transmit power. The new transmit power may be higher than 23 dBm, so that the terminal device can transmit at high power.

[0170] According to a communication method provided in an embodiment of the present application, a network device indicates a power adjustment amount so that a terminal device can obtain a new transmission power based on an initial transmission power and the power adjustment amount, and perform uplink communication with the new transmission power, thereby flexibly adjusting the transmission power of the terminal device.

[0171] The above embodiment describes how a network device can instruct a terminal device to adjust transmit power by indicating a first power adjustment amount. The following embodiment will describe how the terminal device specifically adjusts power based on the first power adjustment amount:

[0172] As shown in Figure 4, it is a flowchart of another communication method provided in an embodiment of the present application. Exemplarily, the method may include the following steps:

[0173] S401. The network device sends second information to the terminal device. Correspondingly, the terminal device receives the second information.

[0174] In order to meet the human body radiation requirements, the network device cannot instruct the terminal device to always transmit at high power. Therefore, it is necessary to indicate the effective duration of the first power adjustment amount.

[0175] In this embodiment, the network device may send second information to the terminal device, where the second information is used to indicate the effective duration of the first power adjustment amount. Exemplarily, the second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

[0176] Exemplarily, the second information may be carried in RRC signaling, MAC CE, etc.

[0177] Furthermore, the RRC signaling or MAC CE etc. may also include the maximum transmit power P EMAX,c The terminal device can determine the first transmission power based on the maximum transmission power configured by the network device.

[0178] S402. The terminal device obtains the first transmission power.

[0179] For the specific implementation of this step, reference may be made to step S301 of the embodiment shown in FIG3 , and details thereof will not be repeated here.

[0180] S403: The network device sends the first information to the terminal device. Correspondingly, the terminal device receives the first information.

[0181] The first information is used to indicate a first power adjustment amount.

[0182] For the specific implementation of this step, reference may be made to step S302 of the embodiment shown in FIG. 3 .

[0183] Furthermore, in order to meet human body radiation requirements, the network device may also indicate the effective period of the first power adjustment amount through the first information to prevent the terminal device from always transmitting at high power. The first information is also used to indicate the effective period of the first power adjustment amount, and the effective period includes at least one of the following information: a start effective time, an effective duration, and an end effective time. For example, the first information may indicate the start effective time and the end effective time, so that the effective duration can be determined; for another example, the first information may indicate the start effective time, and the effective duration may be predefined or preconfigured; for another example, the first information may indicate the end effective time, and the start effective time is determined according to a preset rule.

[0184] Alternatively, the first information is further used to indicate the effective duration of the first power adjustment value. Exemplarily, the first information includes the effective duration of the first power adjustment value, or includes an offset of the effective duration of the first power adjustment value.

[0185] When the second information indicates a basic amount of the effective duration of the first power adjustment amount, the effective duration of the first power adjustment amount is equal to the sum of the basic amount and the offset of the effective duration indicated by the first information.

[0186] This embodiment does not limit the execution order of steps S401 and S403. The two steps can be executed simultaneously, that is, the network device can indicate the effective duration of the first power adjustment amount through the second information at the same time as indicating the first power adjustment amount through the first information. S401 can also be executed first and then S403, that is, before the network device indicates the first power adjustment amount through the first information, the effective duration of the first power adjustment amount can be indicated in advance through the second information. Or S403 can be executed first and then S401, that is, after the network device indicates the first power adjustment amount through the first information, the effective duration of the first power adjustment amount can be indicated through the second information.

[0187] S404: The terminal device sends the third information to the network device. Correspondingly, the network device receives the third information.

[0188] The third information is used to indicate whether the first information is successfully received.

[0189] Exemplarily, when the first information is carried in a MAC CE, and when the HARQ of the process carrying the MAC CE message is enabled, decoding the MAC CE requires providing ACK (acknowledgement) or NACK (non-acknowledgement) feedback. The third information may be the ACK or NACK feedback.

[0190] When the first information is carried in a MAC CE, and when the HARQ of the process carrying the MAC CE message is disabled, decoding the MAC CE does not require providing ACK or NACK feedback.

[0191] This step is optional.

[0192] S405: The terminal device performs uplink communication at the second transmission power. Accordingly, the network device receives an uplink signal from the terminal device.

[0193] The second transmission power is obtained according to the first transmission power and the first information. The uplink signal is sent by the terminal device at the second transmission power.

[0194] For the specific implementation of this step, reference may be made to step S303 of the embodiment shown in FIG3 , and details thereof will not be repeated here.

[0195] It can be understood that during the effective period of the first power adjustment amount, the terminal device performs uplink communication at the second transmission power; after the first power adjustment amount becomes invalid, the terminal device will return to the first transmission power or the default transmission power level for uplink communication.

[0196] The following specifically describes how to implement the starting effective time of the first power adjustment amount:

[0197] In one implementation, since the terminal device needs to parse the first information after receiving it, the first power adjustment amount may take effect at a first time after the terminal device receives the first information. Furthermore, the terminal device performs power adjustment based on the first power adjustment amount, and the terminal device needs to perform uplink communication based on the adjusted power in an uplink subframe. Therefore, the starting time when the first power adjustment amount takes effect is specifically the start time of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the first time after receiving the first information.

[0198] The first time may be agreed upon by a protocol or configured by a network device, which is not limited in this embodiment.

[0199] Exemplarily, the first time mentioned above may be 0, that is, the first power adjustment amount may take effect when the terminal device receives the first information.

[0200] Exemplarily, the first information is carried in the MAC CE. If the HARQ of the process carrying the MAC CE message is turned on, and if the ACK / NACK feedback is within the above-mentioned first time, the terminal device uses the first transmission power to send ACK / NACK; if the ACK / NACK feedback is after the above-mentioned first time, the terminal device uses the second transmission power to send ACK / NACK.

[0201] In another implementation, since the terminal device needs to parse the first information after receiving it, the first power adjustment amount becomes effective after a second time has passed after the third information is sent. Furthermore, the terminal device performs power adjustment based on the first power adjustment amount, and the terminal device needs to perform uplink communication based on the adjusted power in the uplink subframe. Therefore, the starting effective time of the first power adjustment amount is specifically the start time of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the second time has passed after the third information is sent.

[0202] The second time may be agreed upon by a protocol or configured by a network device, and is not limited in this embodiment.

[0203] Exemplarily, the first information is carried on a MAC CE, and the HARQ of the process carrying the MAC CE message is turned on, that is, decoding the MAC CE requires providing ACK or NACK feedback, and the first power adjustment amount takes effect after sending ACK or NACK feedback, then the terminal device uses the first transmission power to send ACK / NACK.

[0204] In another implementation, because the terminal device needs to parse the first information after receiving it, the first power adjustment amount takes effect when the third information is sent. Furthermore, the terminal device performs power adjustment based on the first power adjustment amount, and the terminal device needs to perform uplink communication based on the adjusted power in an uplink subframe. Therefore, the starting time when the first power adjustment amount takes effect is specifically the start time of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the third information is sent.

[0205] Exemplarily, the first information is carried in a MAC CE, and the HARQ of the process carrying the MAC CE message is turned on, that is, decoding the MAC CE requires providing ACK or NACK feedback, and ACK / NACK can be sent using the power adjusted based on the first power adjustment amount.

[0206] Another implementation is that the first power adjustment amount takes effect when the first transmit power is invalid. The first transmit power can be determined based on the second power adjustment amount, and the second power adjustment amount has a certain effective duration. The first power adjustment amount takes effect at the effective end time of the second power adjustment amount, that is, it takes effect when the first transmit power is invalid. Furthermore, the terminal device performs power adjustment based on the first power adjustment amount, and the terminal device needs to perform uplink communication based on the adjusted power on the uplink subframe. Therefore, the starting effective time of the first power adjustment amount is specifically the starting moment of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the end effective time of the first transmit power.

[0207] In another implementation, the first information is received within the effective duration of the second power adjustment amount, and the first information indicates the first power adjustment amount. The starting effective time of the first power adjustment amount can also be combined with the above-mentioned implementation methods. Regardless of whether it is within the effective duration of the second power adjustment amount, the first power adjustment amount can be used for adjustment, that is, the starting effective time of the first power adjustment amount can be within the effective duration of the second power adjustment amount or after the effective duration of the second power adjustment amount.

[0208] The first power adjustment amount may be adjusted based on the first transmit power adjusted by the second power adjustment amount, or based on the transmit power before adjustment by the second power adjustment amount.

[0209] S406. The terminal device sends the fourth information to the network device. Correspondingly, the network device receives the fourth information. This step is optional.

[0210] After a terminal device is scheduled to transmit at high power for a period of time, it can count the duration of its high-power transmission and send fourth information indicating whether it supports subsequent transmission in the first power mode. The first power mode is a high-power transmission mode. This first power mode is relative to the default power mode, where the transmit power is, for example, 23dBm. The terminal device sends the fourth information to ensure that the terminal's transmit power is within the required range for human body radiation. Based on the fourth information, the network device can determine whether to perform subsequent power adjustment and the amount of adjustment.

[0211] Exemplarily, the fourth information may be carried in at least one of the following information: a buffer state report (BSR), hybrid automatic repeat request feedback information, or a random access request.

[0212] The terminal device may implicitly or explicitly indicate whether subsequent transmission in the first power mode is supported through the at least one of the above information:

[0213] The terminal device periodically reports a buffer status report to the network device, and the terminal device can indicate whether to support subsequent transmission in the first power mode through the buffer status report.

[0214] In one example, in order to improve the reliability of the transmitted cache status report, the terminal device scrambles the cache status report. In this example, the terminal device scrambles the cache status report using the first scrambling method. When the network device receives the cache status report scrambled using the first scrambling method, it can know that the terminal device supports continuing to send in the first power mode, so that this method can indicate whether the terminal device supports continuing to send in the first power mode; if the terminal device scrambles the cache status report using other scrambling methods, it does not indicate whether the terminal device supports continuing to send in the first power mode, or indicates that the terminal device cannot support continuing to send in the first power mode. This method does not add new indication overhead and is an implicit indication method.

[0215] In another example, the terminal device may add indication information to the cache status report, where the indication information is used to indicate whether the terminal device supports continuing to send in the first power mode. For example, the indication information is 1 bit, and if the value of the 1 bit is "1", it indicates that the terminal device supports continuing to send in the first power mode; if the value of the 1 bit is "0", it indicates that the terminal device does not support continuing to send in the first power mode.

[0216] When the network device adjusts the power of the terminal device via a MAC CE, that is, the MAC CE indicates a first power adjustment amount, and when HARQ feedback is enabled, the terminal device needs to send hybrid automatic repeat request feedback information, that is, ACK / NACK, to the network device. The terminal device can indicate whether it supports subsequent transmission in the first power mode through the hybrid automatic repeat request feedback information.

[0217] In one example, in order to improve the reliability of the transmitted hybrid automatic repeat request feedback information, the terminal device will scramble the hybrid automatic repeat request feedback information. In this example, if the terminal device uses the second scrambling method to scramble the hybrid automatic repeat request feedback information, the network device receives the hybrid automatic repeat request feedback information scrambled by the second scrambling method, so that it can know whether the terminal device supports continuing to send in the first power mode, and thus this method can indicate whether the terminal device supports continuing to send in the first power mode; if the terminal device uses other scrambling methods to scramble the hybrid automatic repeat request feedback information, it does not indicate whether the terminal device supports continuing to send in the first power mode, or indicates that the terminal device cannot support continuing to send in the first power mode. This method does not add new indication overhead and is an implicit indication method.

[0218] In another example, the terminal device may add indication information to the hybrid automatic repeat request feedback information, where the indication information is used to indicate whether the terminal device supports continuing to send in the first power mode. For example, the indication information is 1 bit, and if the value of the 1 bit is "1", it indicates that the terminal device supports continuing to send in the first power mode; if the value of the 1 bit is "0", it indicates that the terminal device does not support continuing to send in the first power mode.

[0219] Among them, when the terminal device accesses the network, it initiates random access to the network device. The terminal device can indicate whether it supports subsequent transmission in the first power mode by sending a specific random access preamble sequence to the network device. For example, the terminal device sends a first random access preamble sequence to indicate whether it supports subsequent transmission in the first power mode. The network device receives the first random access preamble sequence and can know that the terminal device supports subsequent transmission in the first power mode; if the terminal device sends other random access preamble sequences, it does not indicate whether the terminal device supports continuing to send in the first power mode, or indicates that the terminal device cannot support continuing to send in the first power mode. This indication method does not add new overhead, thereby saving signaling overhead.

[0220] According to a communication method provided by an embodiment of the present application, a network device indicates a power adjustment amount, so that a terminal device can obtain a new transmit power based on an initial transmit power and the power adjustment amount, and perform uplink communication at the new transmit power, thereby flexibly adjusting the transmit power of the terminal device;

[0221] In order to meet human body radiation requirements, the network device may further indicate, through the second information, the effective duration of the first power adjustment amount, so as to prevent the terminal device from always transmitting at high power and enable the terminal device to accurately adjust the transmit power;

[0222] After the terminal device is scheduled to transmit at high power for a period of time, the terminal device can count the duration of the high power transmission by itself and send fourth information to indicate whether it supports transmission in the first power mode.

[0223] The above method is applicable to any terminal device, especially to terminal devices supporting frequency division duplex (FDD). The method can more flexibly support the transmission power adjustment of FDD high-power terminal devices while meeting the requirements of human body radiation.

[0224] It can be understood that in the above embodiments, the methods and / or steps implemented by the terminal device can also be implemented by components used in the terminal device (such as chips or circuits); the methods and / or steps implemented by the network device can also be implemented by components used in the network device (such as chips or circuits).

[0225] The above description mainly describes the solutions provided by the embodiments of the present application from the perspective of the interaction between terminal devices and network devices. Accordingly, the embodiments of the present application also provide a communication device, which is used to implement the various methods described above. The communication device can be the terminal device in the above method embodiments, or a component that can be used in a terminal device; alternatively, the communication device can be the network device in the above method embodiments, or a component that can be used in a network device. It will be understood that, in order to implement the above functions, the communication device includes hardware structures and / or software modules corresponding to performing each function. Those skilled in the art will readily appreciate that, in combination with the various exemplary units and algorithm steps described in the embodiments disclosed herein, the present application can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or in a hardware-driven manner by computer software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0226] In the embodiment of the present application, the functional modules of the communication device can be divided according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0227] Based on the same concept of the above communication method, the present application also provides the following communication device:

[0228] As shown in FIG5 , a schematic diagram of the structure of a communication device provided in an embodiment of the present application is shown. The communication device 500 includes a transceiver unit 501 and a processing unit 502 .

[0229] When the communication device is used to implement the functions of the terminal device in the above method embodiment, the transceiver unit 501 is used to execute the operations of the terminal device in steps S302 and S303 in the embodiment as shown in Figure 3, and the processing unit 502 is used to execute step S301 in the embodiment as shown in Figure 3; or, the transceiver unit 501 is used to execute the operations of the terminal device in steps S401 and S403 to S406 in the embodiment as shown in Figure 4, and the processing unit 502 is used to execute step S402 in the embodiment as shown in Figure 4.

[0230] When the communication device is used to implement the functions of the network device in the above method embodiment, the transceiver unit 501 is used to perform the operations of the network device in steps S302 and S303 in the embodiment as shown in Figure 3; or, the transceiver unit 501 is used to perform the operations of the network device in steps S401 and S403 to S406 in the embodiment as shown in Figure 4.

[0231] For the specific implementation of the above-mentioned transceiver unit 501 and the processing unit 502, reference may be made to the description in the above-mentioned method embodiment.

[0232] As shown in Figure 6, it is a structural diagram of another communication device provided in an embodiment of the present application, and the communication device 600 includes one or more processors 601 (one processor is illustrated in the figure). Optionally, the communication device 600 may further include an interface circuit 602 (represented by a dotted line in the figure), and the processor 601 and the interface circuit 602 are coupled to each other. It is understandable that the interface circuit 602 can be a transceiver or an input / output interface. Optionally, the communication device 600 may further include a memory 603 (represented by a dotted line in the figure). The memory 603 is used to store instructions executed by the processor 601, or to store input data required for the processor 601 to run the instruction, or to store data generated after the processor 601 runs the instruction.

[0233] In which, when the communication device is used to implement the functions of the terminal device in the above method embodiment, the interface circuit 602 is used to execute the operations of the terminal device in steps S302 and S303 in the embodiment as shown in Figure 3, and the processor 601 is used to execute step S301 in the embodiment as shown in Figure 3; or, the interface circuit 602 is used to execute the operations of the terminal device in steps S401, S403 to S406 in the embodiment as shown in Figure 4, and the processor 601 is used to execute step S402 in the embodiment as shown in Figure 4.

[0234] When the communication device is used to implement the functions of the network device in the above method embodiment, the interface circuit 602 is used to execute the operations of the network device in steps S302 and S303 in the embodiment as shown in Figure 3; or, the interface circuit 602 is used to execute the operations of the network device in steps S401 and S403 to S406 in the embodiment as shown in Figure 4.

[0235] When the communication device is a chip used in a terminal device, the chip implements the functions of the terminal device in the above method embodiments. The chip receives information from other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent by the network device to the terminal device; or the chip sends information to other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent by the terminal device to the network device.

[0236] When the communication device is a chip used in a network device, the chip implements the functions of the network device in the above method embodiments. The chip receives information from other modules in the network device (such as a radio frequency module or antenna), and the information is sent by the terminal device to the network device; or the chip sends information to other modules in the network device (such as a radio frequency module or antenna), and the information is sent by the network device to the terminal device.

[0237] In addition, it should be noted that the aforementioned transceiver unit and / or processing unit may be implemented through virtual modules, for example, the processing unit may be implemented through a software function unit or a virtual device, and the transceiver unit may be implemented through a software function or a virtual device. Alternatively, the processing unit or transceiver unit may also be implemented through a physical device, for example, if the device is implemented using a chip / chip circuit, the transceiver unit may be an input / output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing unit is an integrated processor or microprocessor or integrated circuit.

[0238] The division of modules in this application is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the examples of this application may be integrated into a single processor, exist physically as separate modules, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in either hardware or software functional modules.

[0239] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0240] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method in the above embodiment is implemented.

[0241] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method in the above embodiment.

[0242] An embodiment of the present application also provides a communication system, including the above-mentioned communication device.

[0243] The present application also provides a circuit, which is coupled to a memory and is used to execute the method shown in the above embodiment. The circuit may include a chip circuit.

[0244] When the above-mentioned communication device is a module applied to a network device, the network device module implements the functions of the network device in the above-mentioned method embodiment. The network device module receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device; or, the network device module sends information to other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device. The network device module here can be a baseband chip of the network device, or a CU, DU or other module, or a device under the O-RAN architecture, such as an open CU, open DU and other devices.

[0245] It should be noted that the above units or one or more of the units can be implemented by software, hardware, or a combination of the two. When any of the above units or units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow.

[0246] In this application, a processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or all or part of the circuitry in the aforementioned devices used to implement processing functions, which may implement or execute the various methods, steps, and logic block diagrams disclosed in this application. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in this application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0247] When the above units or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0248] Optionally, an embodiment of the present application further provides a chip system, comprising: at least one processor and an interface, wherein the at least one processor is coupled to a memory via the interface, and when the at least one processor executes a computer program or instruction in the memory, the chip system executes the method in any of the above method embodiments. Optionally, the chip system may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

[0249] The memory in the present application may also be a circuit or any other device capable of implementing a storage function for storing program instructions and / or data. A memory is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. For example, the memory may be a non-volatile memory, such as a digital versatile disc (DVD), a hard disk drive (HDD), or a solid-state drive (SSD), or a volatile memory, such as a random-access memory (RAM).

[0250] The terms "including" and "having" and any variations thereof mentioned in the above description of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes other steps or units that are not listed, or optionally includes other steps or units that are inherent to these processes, methods, products or devices. It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any method or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other methods or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0251] It should be understood that in the description of this application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can mean A or B; where A and B can be singular or plural. Also, in the description of this application, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural. In addition, to facilitate the clear description of the technical solutions of the embodiments of this application, in the embodiments of this application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity or execution order, and words such as "first" and "second" do not necessarily mean different. At the same time, in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0252] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, network device or data center to another website, computer, network device or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0253] Although the present application is described herein with reference to various embodiments, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims in the course of practicing the claimed application. In the claims, a single processor or other unit may implement several functions recited in the claim. The fact that certain measures are recited in different dependent claims does not mean that these measures cannot be combined to produce advantageous effects.

[0254] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

[0255] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0256] The components in the device of the embodiment of the present application can be merged, divided, or deleted according to actual needs. Those skilled in the art can combine or combine the different embodiments and features of the different embodiments described in this specification.

[0257] In this application, under the premise of no logical contradiction, the examples can reference each other, for example, the methods and / or terms between method embodiments can reference each other, for example, the functions and / or terms between device embodiments can reference each other, for example, the functions and / or terms between device examples and method examples can reference each other.

Claims

1. A communication method, characterized in that: The method comprises: Acquire a first transmission power; receiving first information, where the first information is used to indicate a first power adjustment amount; Uplink communication is performed with a second transmit power, where the second transmit power is obtained based on the first transmit power and the first information.

2. The method according to claim 1, characterized in that The first transmit power is based on the maximum transmit power configured by the network device, or the first transmit power is the maximum transmit power, the minimum transmit power or the intermediate value of the transmit power of the terminal device, wherein the intermediate value of the transmit power refers to the intermediate value of the maximum transmit power and the minimum transmit power.

3. The method according to claim 1 or 2, characterized in that The first information is also used to indicate the validity period of the first power adjustment amount.

4. The method according to claim 1 or 2, characterized in that: The first information is also used to indicate an effective period of the first power adjustment amount, and the effective period includes at least one of the following information: a starting effective time, an effective duration, or an ending effective time.

5. The method according to claim 1 or 2, characterized in that: The first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

6. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Second information is received, where the second information is used to indicate an effective duration of the first power adjustment amount.

7. The method according to claim 6, characterized in that The second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

8. The method according to any one of claims 1 to 7, characterized in that: The first power adjustment amount becomes effective after a first time has passed after the first information is received; or The first power adjustment amount becomes effective after a second time has passed after the third information is sent; or The first power adjustment amount takes effect when the third information is sent; or The first power adjustment amount takes effect when the first transmit power is invalid; The third information is used to indicate whether the first information is successfully received.

9. The method according to any one of claims 1 to 8, characterized in that The starting effective time of the first power adjustment amount is the starting time of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or The first uplink subframe after the end effective time of the first transmit power.

10. The method according to any one of claims 1 to 9, characterized in that The method further comprises: Send fourth information, where the fourth information is used to indicate whether sending in the first power mode is supported.

11. The method according to claim 10, characterized in that The fourth information is carried in at least one of the following information: a buffer status report, hybrid automatic repeat request feedback information, or a random access request.

12. The method according to claim 11, characterized in that The cache status report uses a first scrambling method to indicate whether transmission in the first power mode is supported.

13. The method according to claim 11, characterized in that The hybrid automatic repeat request feedback information adopts a first scrambling method to indicate whether transmission in the first power mode is supported.

14. The method according to claim 11, characterized in that The fourth information is a first random access preamble sequence to indicate whether transmission in the first power mode is supported.

15. The method according to any one of claims 1 to 14, characterized in that The first power adjustment amount is a positive value or a negative value.

16. The method according to any one of claims 1 to 15, characterized in that The first information includes an index corresponding to the first power adjustment amount, or the first information includes a power level corresponding to the second transmit power.

17. The method according to any one of claims 1 to 16, characterized in that The first information is any one of the following: media access control-control element, or downlink control information.

18. A communication method, characterized in that: The method comprises: Sending first information, where the first information is used to indicate a first power adjustment amount; An uplink signal is received from a terminal device, where the uplink signal is sent with a second transmission power, and the second transmission power is obtained based on the first transmission power and the first information.

19. The method according to claim 18, characterized in that The first transmit power is based on the maximum transmit power configured by the network device, or the first transmit power is the maximum transmit power, the minimum transmit power or the intermediate value of the transmit power of the terminal device, wherein the intermediate value of the transmit power refers to the intermediate value of the maximum transmit power and the minimum transmit power.

20. The method according to claim 18 or 19, characterized in that The first information is also used to indicate the validity period of the first power adjustment amount.

21. The method according to claim 18 or 19, characterized in that The first information is also used to indicate an effective period of the first power adjustment amount, and the effective period includes at least one of the following information: a starting effective time, an effective duration, and an ending effective time.

22. The method according to claim 18 or 19, characterized in that The first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

23. The method according to any one of claims 18 to 20, characterized in that The method further comprises: Sending second information, where the second information is used to indicate the effective duration of the first power adjustment amount.

24. The method of claim 23, wherein: The second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

25. The method according to any one of claims 18 to 24, characterized in that: The first power adjustment amount becomes effective after a first time has passed after the terminal device receives the first information; or The first power adjustment amount becomes effective after a second time has passed after the terminal device sends the third information; or The first power adjustment amount takes effect when the terminal device sends the third information; or The first power adjustment amount takes effect when the first transmit power is invalid; The third information is used to indicate whether the first information is successfully received.

26. The method according to any one of claims 18 to 25, characterized in that The starting effective time of the first power adjustment amount is the starting time of the first uplink subframe, and the first uplink subframe is any one of the following: The first uplink subframe after the first time after the terminal device receives the first information; or The first uplink subframe after the second time after the terminal device sends the third information; or The first uplink subframe after the terminal device sends the third information; or The first uplink subframe after the end effective time of the first transmit power.

27. The method according to any one of claims 18 to 26, characterized in that The method further comprises: Fourth information is received, where the fourth information is used to indicate whether sending in the first power mode is supported.

28. The method of claim 27, wherein: The fourth information is carried in at least one of the following information: a buffer status report, hybrid automatic repeat request feedback information, or a random access request.

29. The method of claim 28, wherein: The cache status report uses a first scrambling method to indicate whether transmission in the first power mode is supported.

30. The method of claim 28, wherein: The hybrid automatic repeat request feedback information adopts a first scrambling method to indicate whether transmission in the first power mode is supported.

31. The method of claim 28, wherein: The fourth information is a first random access preamble sequence to indicate whether transmission in the first power mode is supported.

32. The method according to any one of claims 18 to 31, characterized in that The first power adjustment amount is a positive value or a negative value.

33. The method according to any one of claims 18 to 32, characterized in that The first information includes an index corresponding to the first power adjustment amount, or the first information includes a power level corresponding to the second transmit power.

34. The method according to any one of claims 18 to 33, characterized in that The first information is any one of the following: media access control-control element, or downlink control information.

35. A communication device, characterized in that: The method comprises a unit for implementing the method according to any one of claims 1 to 17, or comprises a unit for implementing the method according to any one of claims 18 to 34.

36. A communication system, characterized in that: It comprises a terminal device and a network device, wherein the terminal device is used to execute the method according to any one of claims 1 to 17, and the network device is used to execute the method according to any one of claims 18 to 34.

37. A communication device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method as claimed in any one of claims 1 to 17 or the method as claimed in any one of claims 18 to 34 when executing the computer program.

38. A computer-readable storage medium, wherein a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed, the method according to any one of claims 1 to 34 is performed.

39. A computer program product comprising instructions, which, when executed on a communication device, cause the communication device to perform the method according to any one of claims 1 to 34.

40. A chip, characterized in that: The chip is coupled to a memory, and the chip is used to execute the method according to any one of claims 1-34.

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