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

Abstract

A communication method, apparatus and system, a storage medium, a program product, and a chip. The method comprises: a terminal determining first power, wherein the first power is less than or equal to second power, the second power is output power of the terminal corresponding to a carrier f and a serving cell c, the second power is unrelated to a first power backoff parameter, and the first power backoff parameter is a power backoff parameter used for satisfying a human body radiation requirement; and on the basis of the first power, performing uplink communication with a network device. By means of the solution of the present application, the terminal performs uplink communication with the network device at the first power, and the terminal does not consider power backoff used for meeting the human body radiation requirement, so that the sending power is improved.

Description

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

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 29, 2023, with application number 202311873120.8 and invention name “Communication method, device, system, storage medium, program product and chip”, 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, storage medium, program product, and chip. Background Art

[0003] Terminal communications must meet specific absorption rate (SAR) requirements, specifically those for human radiation exposure. Existing technologies specify a strict process to ensure that the proportion of high-power uplink transmissions from terminals does not exceed a certain threshold. High-power terminals must also adhere to power fallback, using a default power of 23dBm when conditions are not met. For example, the network can configure the maximum transmit power and determine whether the proportion of uplink transmissions exceeds a threshold within the current configuration period. These conditions constrain the terminal's transmit power, leading to overly conservative control of the terminal's transmit power.

[0004] In view of this, how to flexibly control the transmission power of the terminal during the communication process is a problem that needs to be solved at present. Summary of the Invention

[0005] The present application provides a communication method and related products, so that the transmission power of a terminal can be flexibly controlled.

[0006] In a first aspect, a communication method is provided, wherein the method is implemented by a terminal, or a chip or circuit for a terminal.

[0007] The method includes: determining a first power, the first power is less than or equal to a second power, the second power is the output power of the terminal corresponding to the carrier f and the service cell c; the second power is independent of the first power backoff parameter, the first power backoff parameter is a power backoff parameter used to meet human body radiation requirements; and performing uplink communication based on the first power.

[0008] In this aspect, the terminal performs uplink communication with the network device at the first power, and the terminal does not consider power fallback for meeting human body radiation requirements, thereby increasing the transmission power.

[0009] In a possible implementation, the second power P CMAX,f,c Satisfied: PCMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c Among them, P CMAX_L,f,c =MIN{P EMAX,c -ΔT C,c ,(P PowerClass )-MAX(MAX(MPR c +ΔMPR c ,A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS ,P-MPR c )};P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass}; Among them, P EMAX,c is the maximum transmit power configured on the network side; ΔT C,c is the power relaxation parameter corresponding to the serving cell c; PowerClass is the maximum transmit power based on the capabilities of the terminal; MPR c is the power backoff amount corresponding to the serving cell c according to the waveform adjustment method and resource block allocation; ΔMPR c is the additional power back-off amount for the frequency band; A-MPR c is the additional maximum power backoff of the serving cell c; ΔT IB,c is the additional margin of the serving cell c; ΔT RxSRS It is the power parameter related to the configuration of the sounding reference signal; P-MPR c It is a back-off parameter related to the electromagnetic energy absorption requirement corresponding to the serving cell c.

[0010] In this implementation, compared with the existing formula, P CMAX,f,c The upper limit P CMAX_H,f,c and the lower limit P CMAX_L,f,c The power back-off parameter ΔP to meet human radiation requirements is not considered. PowerClass . The first power is limited by P CMAX,f,c Therefore, the P CMAX,f,c , that is, the first power is increased.

[0011] In another possible implementation, the method further includes: determining the residual power of the first power relative to the second power; and when the residual power is a positive number, continuing to perform uplink communication at the first power; when the residual power is a negative number, performing uplink communication at a third power, the third power being the P PowerClass and a first power backoff amount, wherein the first power backoff amount corresponds to the remaining power.

[0012] In this implementation, when the remaining power is positive, it indicates that the terminal can still transmit at high power, and thus the terminal continues uplink communications at the first power. When the remaining power is negative, it indicates that continuing to transmit at the first power will not meet the SAR requirement and requires power backoff. Therefore, the terminal performs power backoff based on the first power to obtain a third power, and then performs uplink communications at the third power. This meets the SAR requirement.

[0013] In yet another possible implementation, the method further includes: sending first information, where the first information is used to indicate the remaining power.

[0014] In this implementation, when the terminal reports a positive remaining power, it indicates that the network can still schedule the terminal to transmit at high power; when the terminal reports a negative remaining power, it indicates the network's current high-power transmission status of the terminal and controls the terminal's high-power transmission.

[0015] In another possible implementation, when the first power meets the human body radiation requirement, the remaining power PH type1b,f,c (i,j,q d ,l)Satisfy PL b,f,c (q d )+Δ TF,b,f,c (i)+f b,f,c (i, l)}, the remaining power is a positive number; when the first power does not meet the human body radiation requirements, the remaining power PH type1b,f,c (i,j,q d ,l)Satisfy The remaining power is a negative number; wherein, P CMAX,f,c (i) is the second power corresponding to transmission opportunity i; is the output power of the physical uplink shared channel PUSCH of the partial bandwidth b, the carrier f, and the serving cell c; is the number of resource blocks of PUSCH resources allocated for the transmission opportunity i on the partial bandwidth b, the carrier f, and the serving cell c; μ is the subcarrier spacing; α b,f,c (j) is the compensation factor for path loss; PL b,f,c (q d ) is the estimated path loss over the partial bandwidth b, the carrier f, and the serving cell c; Δ TF,b,f,c (i) is a power parameter related to the modulation scheme on the partial bandwidth b, the carrier f, and the serving cell c; b,f,c (i, l) are the parameters related to the closed-loop power adjustment of the transmission opportunity i on the partial bandwidth b, the carrier f, and the serving cell c; Pdefault It is the default transmit power that meets the human body radiation requirements.

[0016] In this implementation, when the uplink communication of the terminal meets the SAR requirement, the existing power headroom formula is used to calculate the remaining power; when the terminal transmits at high power for a period of time and does not meet the SAR requirement, the minuend P is used to calculate the remaining power. CMAX,f,c (i) Subtract (P PowerClass -P default ), so that the remaining power may be negative.

[0017] In another possible implementation, the remaining power is a transmitted duty cycle obtained based on a reference transmit power and the first power, or a duty cycle of a remaining transmit duration obtained based on the reference transmit power and the first power.

[0018] This implementation introduces a new type of residual power reporting method. The residual power can be the transmitted duty cycle obtained based on the reference transmit power and the first power, or the duty cycle of the remaining transmit duration obtained based on the reference transmit power and the first power. The network can then determine the power for subsequent scheduled terminals for uplink communications based on the reported residual power.

[0019] In another possible implementation, the α b,f,c (j) is greater than 1, the α b,f,c (j) associated with the second power.

[0020] In this implementation, α can be set b,f,c (j) is greater than 1, so as to increase the first power. This is equivalent to the network side indicating a higher transmission power.

[0021] In another possible implementation, the method further includes: sending second information, where the second information is used to indicate at least one of the following information: a second power backoff amount corresponding to the modulation mode, a corresponding third power backoff amount, and a fourth power backoff amount corresponding to the resource block allocation position.

[0022] In this implementation, different modulation modes, waveforms, and resource allocation locations used by terminals can affect the terminal's transmit power. In the prior art, the power backoff amounts corresponding to different modulation modes, waveforms, and resource allocation locations are uniformly predetermined by protocol and determined by the network using a table lookup. In this application, if the terminal's capabilities support it, the terminal can determine the power backoff amount based on its own capabilities, rather than relying on a uniform protocol agreement.

[0023] 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.

[0024] The method includes: receiving an uplink signal, the uplink signal is based on a first power, the first power is less than or equal to a second power, the second power is the output power of the terminal corresponding to the carrier f and the service cell c; the second power is independent of the first power backoff parameter, and the first power backoff parameter is a power backoff parameter used to meet human body radiation requirements.

[0025] In a possible implementation, the second power P CMAX,f,c Satisfied: P CMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c Among them, P CMAX_L,f,c =MIN{P EMAX,c -ΔT C,c ,(P PowerClass )-MAX(MAX(MPR c +ΔMPR c ,A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS ,P-MPR c )};P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass}; Among them, P EMAX,c is the maximum transmit power configured on the network side; ΔT C,c is the power relaxation parameter corresponding to the serving cell c; PowerClass is the maximum transmit power based on the capabilities of the terminal; MPR c is the power backoff amount corresponding to the serving cell c according to the waveform adjustment method and resource block allocation; ΔMPR c is the additional power back-off amount for the frequency band; A-MPR c is the additional maximum power backoff of the serving cell c; ΔT IB,c is the additional margin of the serving cell c; ΔT RxSRS It is the power parameter related to the configuration of the sounding reference signal; P-MPR c It is a back-off parameter related to the electromagnetic energy absorption requirement corresponding to the serving cell c.

[0026] In another possible implementation, the method further includes: receiving first information, where the first information is used to indicate the remaining power, and the remaining power is the remaining power of the first power relative to the second power.

[0027] In another possible implementation, when the residual power is a positive number, the uplink signal is continued to be based on the first power; when the residual power is a negative number, the uplink signal is based on a third power, and the third power is the P PowerClass and a first power backoff amount, wherein the first power backoff amount corresponds to the remaining power.

[0028] In another possible implementation, when the residual power is a positive number, the residual power PH type1b,f,c (i,j,q d ,l)Satisfy When the residual power is negative, the residual power PH type1b,f,c (i,j,q d ,l)Satisfy Among them, P CMAX,f,c (i) is the second power corresponding to transmission opportunity i; is the output power of the physical uplink shared channel PUSCH of the partial bandwidth b, the carrier f, and the serving cell c; is the number of resource blocks of PUSCH resources allocated for the transmission opportunity i on the partial bandwidth b, the carrier f, and the serving cell c; μ is the subcarrier spacing; α b,f,c (j) is the compensation factor for path loss; PL b,f,c (q d ) is the estimated path loss over the partial bandwidth b, the carrier f, and the serving cell c; Δ TF,b,f,c (i) is a power parameter related to the modulation scheme on the partial bandwidth b, the carrier f, and the serving cell c; b,f,c (i, l) are the parameters related to the closed-loop power adjustment of the transmission opportunity i on the partial bandwidth b, the carrier f, and the serving cell c; P default It is the default transmit power that meets the human body radiation requirements.

[0029] In another possible implementation, the remaining power is a transmitted duty cycle obtained based on a reference transmit power and the first power, or a duty cycle of a remaining transmit duration obtained based on the reference transmit power and the first power.

[0030] In another possible implementation, the α b,f,c (j) is greater than 1, the α b,f,c (j) associated with the second power.

[0031] In another possible implementation, the method further includes: receiving second information, where the second information is used to indicate at least one of the following information: a second power backoff amount corresponding to the modulation mode, a third power backoff amount corresponding to the waveform, and a fourth power backoff amount corresponding to the resource block allocation position.

[0032] According to a third aspect, a communication method is provided, which is implemented by a terminal, or a chip or circuit for a terminal.

[0033] The method includes: obtaining a power increase value Δp; determining a first power, wherein the first power is the output power P of the terminal corresponding to the carrier f and the serving cell c. CMAX,f,c , partial bandwidth b, the carrier f, and the output power of the physical uplink shared channel PUSCH of the serving cell c Subcarrier spacing μ, the partial bandwidth b, the carrier f, the number of resource blocks of the allocated PUSCH resources for the transmission opportunity i on the serving cell c Path loss compensation factor α b,f,c (j), the partial bandwidth b, the carrier f, and the estimated path loss PL on the serving cell c b,f,c (q d ), the power parameter Δ related to the modulation mode on the partial bandwidth b, the carrier f, and the serving cell c TF,b,f,c (i), the partial bandwidth b, the carrier f, and the parameter f related to the closed-loop power adjustment of the transmission opportunity i on the serving cell c b,f,c (i, l), determined by the Δp; and performing uplink communication based on the first power.

[0034] In this implementation, the transmit power of the terminal is increased by increasing the power of the terminal for uplink communication to a certain extent.

[0035] In a possible implementation, the first power P PUSCH,b,f,c (i,j,q d ,l)Satisfy:

[0036] In another possible implementation, the power boost value is equal to the maximum transmit power P based on the capability of the terminal. PowerClass association.

[0037] In this implementation, the terminal can report its capabilities to the network device, and the network side configures the corresponding Δp based on the capabilities of the terminal; the terminal can also determine Δp based on its own capabilities and indicate the Δp it uses to the network device.

[0038] In another possible implementation, the method further includes: determining the first power relative to the PCMAX,f,c when the remaining power is a positive number, uplink communication continues with the first power; when the remaining power is a negative number, uplink communication is performed with a second power, where the second power is the difference between the maximum transmit power based on the terminal's capability and the first power backoff amount, and the first power backoff amount corresponds to the remaining power.

[0039] In this implementation, when the remaining power is positive, it indicates that the terminal can still transmit at high power, and thus the terminal continues uplink communication at the first power. When the remaining power is negative, it indicates that if the terminal continues to transmit at the first power, it will not meet the SAR requirement and power backoff is required. Therefore, the terminal performs power backoff based on the first power to obtain the second power, and then continues uplink communication at the second power.

[0040] In yet another possible implementation, the method further includes: sending first information, where the first information is used to indicate the remaining power.

[0041] In this implementation, when the terminal reports a positive remaining power, it indicates that the network can still schedule the terminal to transmit at high power; when the terminal reports a negative remaining power, it indicates the network's current high-power transmission status of the terminal and controls the terminal's high-power transmission.

[0042] In another possible implementation, when the first power meets the human body radiation requirement, the remaining power PH type1b,f,c (i,j,q d ,l)Satisfy The remaining power is a positive number; when the first power does not meet the human body radiation requirements, the remaining power PH type1b,f,c (i,j,q d ,l)Satisfy The remaining power is a negative number.

[0043] In this implementation, when the terminal's uplink communication meets the SAR requirement, the existing power headroom formula is used to calculate the remaining power. When the terminal transmits at high power for a period of time and does not meet the SAR requirement, Δp is further subtracted from the existing power headroom formula when calculating the remaining power, making it possible for the remaining power to be negative.

[0044] In another possible implementation, the α b,f,c (j) is greater than 1, the α b,f,c (j) with the P CMAX,f,c association.

[0045] In another possible implementation, the remaining power is a transmitted duty cycle obtained based on a reference transmit power and the first power, or a duty cycle of a remaining transmit duration obtained based on the reference transmit power and the first power.

[0046] In another possible implementation, the method further includes: sending second information, where the second information is used to indicate at least one of the following information: a second power backoff amount corresponding to the modulation mode, a third power backoff amount corresponding to the waveform, and a fourth power backoff amount corresponding to the resource block allocation position.

[0047] In a fourth aspect, a communication method is provided, which is implemented by a network device, or a chip or circuit used for a network device.

[0048] The method includes: receiving an uplink signal, wherein the uplink signal is based on a first power, wherein the first power is an output power P of a terminal corresponding to a carrier f and a serving cell c. CMAX,f,c , partial bandwidth b, the carrier f, and the output power P of the physical uplink shared channel PUSCH of the serving cell c OPUSCHb,f,c (j), subcarrier spacing μ, the partial bandwidth b, the carrier f, and the number of resource blocks of the allocated PUSCH resources for the transmission opportunity i on the serving cell c Path loss compensation factor α b,f,c (j), the partial bandwidth b, the carrier f, and the estimated path loss PL on the serving cell c b,f,c (q d ), the power parameter Δ related to the modulation mode on the partial bandwidth b, the carrier f, and the serving cell c TF,b,f,c (i), the partial bandwidth b, the carrier f, and the parameter f related to the closed-loop power adjustment of the transmission opportunity i on the serving cell c b,f,c (i,l) and the power boost value Δp are determined.

[0049] In a possible implementation, the first power P PUSCH,b,f,c (i,j,q d ,l)Satisfy:

[0050] In another possible implementation, the power boost value is equal to the maximum transmit power P based on the capability of the terminal. PowerClass association.

[0051] In another possible implementation, the method further includes: receiving first information, where the first information is used to indicate the remaining power, where the remaining power is the first power relative to the P CMAX,f,c of the remaining power.

[0052] In another possible implementation, when the residual power is a positive number, the uplink signal continues to be based on the first power; when the residual power is a negative number, the uplink signal is based on a second power, and the second power is the difference between the maximum transmit power based on the terminal's capability and the first power backoff amount, and the first power backoff amount corresponds to the residual power.

[0053] In another possible implementation, when the residual power is a positive number, the residual power PH type1b,f,c (i,j,q d ,l)Satisfy When the residual power is negative, the residual power PH type1b,f,c (i,j,q d ,l)Satisfy

[0054] In another possible implementation, the α b,f,c (j) is greater than 1, the α b,f,c (j) with the P CMAX,f,c association.

[0055] In another possible implementation, the remaining power is a transmitted duty cycle obtained based on a reference transmit power and the first power, or a duty cycle of a remaining transmit duration obtained based on the reference transmit power and the first power.

[0056] In another possible implementation, the method further includes: receiving second information, where the second information is used to indicate at least one of the following information: a second power backoff amount corresponding to the modulation mode, a third power backoff amount corresponding to the waveform, and a fourth power backoff amount corresponding to the resource block allocation position.

[0057] In a fifth aspect, a communication device is provided for implementing the communication method in any one of the implementations of the first aspect, the third aspect, or the first aspect and the third aspect. The device can be a terminal, or a module applied to a terminal (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 a terminal. 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").

[0058] In a sixth aspect, a communication device is provided for implementing the communication method in any one of the implementations of the second aspect, the fourth aspect, or the second aspect and the fourth aspect. The device can be a network device, or a module applied to a network 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 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").

[0059] In a possible implementation, the communication device in the fifth to sixth aspects includes a unit for respectively executing the method in any one of the first to fourth aspects or any one of the implementations.

[0060] In another possible implementation, the communication device in the fifth to sixth 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 used to couple with the processor and store 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.

[0061] In another possible implementation, the communication device in the fifth to sixth 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 execution code instruction. 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.

[0062] When the communication device in the fifth and sixth aspects is a chip, the transmitting unit may be an output unit, such as an output circuit or a communication interface; and 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 transmitting unit may be a transmitter or a transmitter; and the receiving unit may be a receiver or a receiver.

[0063] In a seventh 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.

[0064] In an eighth 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.

[0065] In the ninth aspect, a communication system is provided, which includes a terminal and a network device, wherein the terminal is used to implement the method described in the first aspect or any one of the implementations of the first aspect, and the network device is used to implement the method described in the second aspect or any one of the implementations of the second aspect.

[0066] In the tenth aspect, a communication system is provided, which includes a terminal and a network device, wherein the terminal is used to implement the method described in the third aspect or any one of the implementations of the third aspect, and the network device is used to implement the method described in the fourth aspect or any one of the implementations of the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] FIG1 is a simplified schematic diagram of a wireless communication system provided by an embodiment of the present application;

[0068] Figures 2a-2c are schematic diagrams of application scenarios of satellite-ground fusion networks;

[0069] FIG3 is a flow chart of a communication method provided in an embodiment of the present application;

[0070] FIG4 is a flow chart of another communication method provided in an embodiment of the present application;

[0071] FIG5 is a flow chart of another communication method provided in an embodiment of the present application;

[0072] FIG6 is a flow chart of another communication method provided in an embodiment of the present application;

[0073] FIG7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0074] FIG8 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0075] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0076] The technology provided by this application can be applied to various communication systems. For example, the communication system can be a fourth generation (4 thgeneration, 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.

[0077] A network element in a communication system can send signals to or receive signals from another network element. The signals may include information, signaling, or data. The network element can also be replaced by an entity, a network entity, a device, a terminal, 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 and at least one access network device. The access network device can send downlink signals to the terminal, and / or the terminal can send uplink signals to the access network device. In addition, it is understood that if the communication system includes multiple terminals, the multiple terminals can also send signals to each other, that is, the signal sending network element and the signal receiving network element can both be terminals.

[0078] The communication method provided in the embodiment of the present application can be applied to wireless communication systems such as 5G, future communications, 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 can be a next-generation radio access network, or a traditional (e.g., 5G, 4G) radio access network. One or more terminals (120a-120g, collectively referred to as 120) can be connected to each other, or connected to one or more network devices (110a~110c, collectively referred to as 110) in the radio access network 100, and the connection method can 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, etc., which are not drawn in Figure 1.

[0079] Optionally, in actual applications, the wireless communication system may include multiple network devices (also called access network devices) and multiple terminals at the same time. A network device can serve one or more terminals at the same time. A terminal can also access one or more network devices at the same time. The embodiments of the present application do not limit the number of terminals and network devices included in the wireless communication system.

[0080] 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 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), 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 (DU), radio unit ( The base station may 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 may also refer to a communication module, a modem or a chip provided in the aforementioned device or apparatus. The network device may also be a mobile switching center and a device that performs base station functions 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 base station functions in a future communication system. The network device may 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.

[0081] 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 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 communicating with satellite base station 110a.

[0082] 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.

[0083] A terminal can be an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal can be used to connect people, objects and machines. The terminal can communicate with one or more core networks through network devices. The terminal includes a handheld device with wireless connection function, other processing devices connected to a wireless modem, or a vehicle-mounted device. The terminal can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device. The terminal 120 can 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 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 120 may be a wireless terminal in a smart city, such as a smart gas pump, a terminal 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 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 may also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. The terminal may also be a terminal in a future wireless communication system. The terminal may be used in a dedicated network device or a general-purpose device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0084] Alternatively, a terminal 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.

[0085] In this application, the communication device used to implement the terminal function can be a terminal, or a terminal with some of the functions of the above terminal, or a device that can support the implementation of the functions of the above terminal, such as a chip system, which can be installed in the terminal or used in conjunction with the terminal. In this application, the chip system can be composed of a chip, or it can include a chip and other discrete devices. In the technical solution provided in this application, the communication device is described as a terminal or UE as an example.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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 interface, relative to the CPRI, part of the downlink and / or uplink baseband functions, such as, for downlink, one or more of precoding, digital beamforming (BF), or inverse fast Fourier transform (IFFT) / cyclic prefix (CP) 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] It is understandable that the present application can be applied between network devices and terminals.

[0095] The communication between the network device and the terminal 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.

[0096] Optionally, the protocol layer structure between the network device and the terminal may also include an artificial intelligence (AI) layer for transmitting data related to AI functions.

[0097] Taking data transmission between network devices and terminals 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.

[0098] For example, a terminal may also have an application layer and a non-access layer. The application layer can be used to provide services to applications installed in the terminal. For example, downlink data received by the terminal can be sequentially transmitted from the physical layer to the application layer, and then provided to the application by the application layer. 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.

[0099] 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 terminals, more access network devices, and other network elements, such as core network devices, and / or network elements for implementing artificial intelligence functions.

[0100] It is understandable that all or part of the functions implemented by one or more of the terminals, access network devices, core network devices, 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 and the access network device involve an interface for air interface transmission, the transceiver function of the interface 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, access network device, core network device, or network elements for implementing artificial intelligence functions can be implemented by cloud devices, such as cloud devices in an over the top (OTT) system.

[0101] Satellite communications offer unique advantages over terrestrial communications, such as wider coverage and reduced vulnerability to natural disasters and external forces. The integration of satellite communications into future 5G communications could provide services in areas beyond the reach of terrestrial networks, such as oceans and forests. It could also enhance the reliability of 5G communications, providing higher-quality services for users on airplanes and trains. Furthermore, it could provide 5G with more data transmission resources and boost network speeds. Therefore, supporting both terrestrial and satellite communications is an inevitable trend in future 5G communications, offering significant benefits in terms of wide coverage, reliability, multiple connections, and high throughput.

[0102] As shown in Figures 2a to 2c, this is a schematic diagram of the application scenario of the satellite-ground integrated network. The terminal on the ground can access the network through the air interface (the air interface can be various types of air interfaces, such as the 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 the 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.

[0103] Satellite communication, as a communication scenario of 5G communication, is called non-terrestrial network (NTN). It can not only support various types of 5G terminals, but also support IoT-type terminals.

[0104] Since satellite base stations are far away and move quickly, ground terminals should communicate with satellite base stations in high-power mode to improve communication reliability.

[0105] However, terminal communications must meet SAR (Specular Response) requirements, specifically those for human body radiation exposure. Currently, a strict set of procedures is in place to ensure that terminals' high-power uplink transmissions do not exceed a certain percentage. Terminals communicating in high-power mode must also adhere to power fallback. This means they can only transmit at the default power of 23dBm when conditions are not met. For example, network equipment can be configured with a maximum transmit power. Whether the uplink transmission percentage exceeds a threshold during the current configuration period will constrain the terminal's transmit power.

[0106] Currently, the high power levels (transmit power higher than 23dBm) supported by terminals are defined in the time division duplexing (TDD) frequency band as shown in Table 1 below:

[0107] Table 1

[0108] As shown in Table 1, the high power levels supported by terminals in TDD frequency bands are defined, but there are no specific regulations for high power levels supported by terminals communicating in frequency division duplexing (FDD) bands. TDD uses the same frequency for uplink and downlink transmission, but in time division. Because FDD uses different frequency bands for uplink and downlink, uplink and downlink transmission can occur simultaneously. TDD-based power adjustment is based on TDD's power allocation ratio. Specifically, TDD periodically allocates the first 5 ms for uplink reception and the last 5 ms for downlink reception, based on a specific period (e.g., 10 ms). Due to the periodic nature of the TDD frame structure, the uplink power ratio is always 50% in each period. If the SAR requirement states that a terminal can transmit at a high power of 26 dBm when the uplink power ratio does not exceed 50% for 50% of the time, then as long as the network equipment maintains a fixed allocation ratio, the terminal can meet the SAR requirement by transmitting at 26 dBm for uplink transmission. In FDD communication, since terminals can continuously transmit uplink, using the TDD decision-making method will result in overly conservative terminal transmit power. For example, if the SAR observation period is 6 minutes, the terminal can continuously send uplink signals for 3 minutes and receive downlink signals for 3 minutes. If TDD is used, the terminal can only send uplink signals at a rate of 50% or less every 10ms. Therefore, network equipment does not plan data transmission over a long period of time; instead, it schedules data transmission based on current traffic.

[0109] Terminal communications must meet SAR requirements, or the radiation exposure threshold for human bodies. Existing technologies define a strict process to ensure that the proportion of high-power uplink transmissions from terminals does not exceed a certain threshold. High-power terminals also require power fallback, using a default 23dBm power level when conditions are not met. For example, the network can configure the maximum transmit power and determine whether the proportion of uplink transmissions exceeds a threshold within the current configuration period. These conditions constrain the terminal's transmit power, leading to overly conservative transmit power control.

[0110] Among them, the output power P of the terminal corresponding to the carrier f and the serving cell c specified in the prior art is CMAX,f,c Satisfies the following formula 1: P CMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c ...Formula 1

[0111] Among them, P CMAX_L,f,c =MIN{P EMAX,c -ΔT C,c ,(P PowerClass -ΔP PowerClass )-MAX(MAX(MPR c +ΔMPR c,A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS ,P-MPR c )}; P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass s -ΔP PowerClass};

[0112] Among them, P EMAX,c is the maximum transmit power configured on the network side; ΔT C,c is the power relaxation parameter corresponding to the serving cell c; PowerClass is the maximum transmit power based on the capabilities of the terminal; ΔP PowerClass is the power back-off parameter to meet SAR requirements; MPR c is the power backoff amount corresponding to the serving cell c according to the waveform adjustment method and resource block allocation; ΔMPR c is the additional power back-off amount for the frequency band; A-MPR c is the additional maximum power backoff of the serving cell c; ΔT IB,c is the additional margin of the serving cell c; ΔT RxSRS It is the power parameter related to the configuration of the sounding reference signal; P-MPR c It is a back-off parameter related to the electromagnetic energy absorption requirement corresponding to the serving cell c.

[0113] It can be seen that ΔP PowerClass It not only affects P CMAX,f,c The upper limit of P CMAX,f,c The lower limit of .

[0114] In general, P CMAX_H,f,c Considering the maximum transmit power P configured on the network side EMAX,c , the maximum transmit power P supported by the terminal PowerClass Subtract the power back-off parameter ΔP PowerClass The minimum of these two.

[0115] P CMAX_L,f,c The maximum transmit power P configured on the network side EMAX,c and the maximum transmit power P supported by the terminal PowerClass The minimum transmit power after considering various power back-off factors.

[0116] Among them, after determining P CMAX,f,c Based on this, uplink signal transmission, such as data transmission, will further adjust the power as follows:

[0117] PPUSCH,b,f,c (i,j,q d ,l) satisfies the following formula 2:

[0118] Among them, P CMAX,f,c is the output power of the terminal corresponding to carrier f and serving cell c; OPUSCHb,f,c (j) is the output power of the physical uplink shared channel (PUSCH) of the partial bandwidth b, carrier f, and serving cell c; μ is the subcarrier spacing; is the number of resource blocks of PUSCH resources allocated for transmission opportunity i on partial bandwidth b, carrier f, and serving cell c; b,f,c (j) is the compensation factor for path loss; PL b,f,c (q d ) is the estimated path loss on the partial bandwidth b, carrier f, and serving cell c; Δ TF,b,f,c (i) is the power parameter related to the modulation scheme on the partial bandwidth b, carrier f, and serving cell c; f b,f,c (i, l) are the parameters related to closed-loop power adjustment for transmission opportunity i on partial bandwidth b, carrier f, and serving cell c.

[0119] Among them, f b,f,c (i, l) represents the closed-loop power control item. Although the adjustment range of the closed-loop power control can be large, it is ultimately affected by P CMAX,f,c restrictions.

[0120] Among them, the power margin PH type1b,f,c (i,j,q d ,l) satisfies the following formula 3:

[0121] It can be seen that the power margin represents the output power P of the terminal. CMAX,f,c Subtract the actual transmit power P PUSCH,b,f,c (i,j,q d ,l). According to formula 2, if the minimum value is P CMAX,f,c , then the power headroom is equal to 0, otherwise it is a positive number. Therefore, the power headroom reported by the terminal is a value greater than or equal to 0.

[0122] Although the above parameter f b,f,c (i, l) can adjust the power through the signaling instruction of the network side. However, according to formula 2, the upper limit of the terminal's transmission power is P CMAX,f,c Therefore, the TDD communication mode still cannot flexibly adjust the power within a relatively long period.

[0123] In summary, after taking various factors into consideration, the transmit power of a terminal is basically limited to a great extent.

[0124] To this end, the present application provides a communication solution, in which the terminal performs uplink communication with the network device at a first power, and the terminal does not consider power fallback to meet human body radiation requirements, thereby increasing the transmission power.

[0125] 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:

[0126] S301. The terminal determines a first power.

[0127] When performing uplink communication, the terminal first determines the transmit power. In this embodiment, the terminal determines the transmit power to be the first power.

[0128] For high-power terminals, they need to transmit at high power within a certain period of time. However, the above-mentioned existing power determination formula limits the increase in power. In this embodiment, the terminal determines a first power. The first power is less than or equal to the second power, and the second power is the output power of the terminal corresponding to carrier f and serving cell c. The second power is equal to the first power backoff parameter ΔP PowerClass Regardless, the first power back-off parameter is a power back-off parameter used to meet human body radiation requirements.

[0129] For example, the second power P CMAX,f,c Satisfies the following formula 4: P CMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c ...Formula 4

[0130] Among them, P CMAX_L,f,c =MIN{P EMAX,c -ΔT C,c ,(P PowerClass )-MAX(MAX(MPR c +ΔMPR c ,A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS ,P-MPR c )}; P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass};

[0131] Among them, P EMAX,c is the maximum transmit power configured on the network side; ΔT C,c is the power relaxation parameter corresponding to the serving cell c; PowerClassis the maximum transmit power based on the capabilities of the terminal; MPR c is the power backoff amount corresponding to the serving cell c according to the waveform adjustment method and resource block allocation; ΔMPR c is the additional power back-off amount for the frequency band; A-MPR c is the additional maximum power backoff of the serving cell c; ΔT IB,c is the additional margin of the serving cell c; ΔT RxSRS It is the power parameter related to the configuration of the sounding reference signal; P-MPR c It is a back-off parameter related to the electromagnetic energy absorption requirement corresponding to the serving cell c.

[0132] The difference between this formula 4 and the existing formula 1 is that P CMAX,f,c The upper limit P CMAX_H,f,c and the lower limit P CMAX_L,f,c The power back-off parameter ΔP to meet human radiation requirements is not considered. PowerClass Then, according to Formula 2, Formula 2 is used to determine the first power P PUSCH,b,f,c (i,j,q d ,l), the first power is limited by P CMAX,f,c Therefore, the P CMAX,f,c , that is, the first power is increased.

[0133] The meanings of other parameters in Formula 4 can be found in relevant standards or protocols and will not be detailed here.

[0134] S302. The terminal performs uplink communication with the network device based on the first power.

[0135] After determining the first power, the terminal sends an uplink signal to the network device at the first power. Correspondingly, the network device receives the uplink signal sent by the terminal, where the uplink signal is sent based on the first power.

[0136] The above solution can be applied to terminals in FDD mode or terminals in TDD mode. Alternatively, terminals in TDD mode can also use the above existing power determination method to determine the transmit power.

[0137] According to a communication method provided in an embodiment of the present application, a terminal performs uplink communication with a network device at a first power, and the terminal does not consider power fallback to meet human body radiation requirements, thereby increasing the transmission power.

[0138] In addition, in the prior art, the parameter α in Formula 2 is b,f,c (j) is the compensation factor for path loss, α b,f,c (j) is less than or equal to 1, if α b,f,c(j) = 1, indicating that the power adjustment needs to fully compensate for the power loss caused by the path loss. b,f,c (j) is greater than 1 to increase the first power. This is equivalent to the network side indicating a higher transmission power. b,f,c The value range of (j) can be determined according to the terminal's capabilities, i.e. b,f,c (j) is associated with the second power. For example, for P CMAX,f,c For a 23dBm terminal, α b,f,c (j) is less than or equal to 3; for example, for P CMAX,f,c For a 26dBm terminal, α b,f,c The value of (j) is less than or equal to 2.

[0139] The network side can continuously increase the terminal's transmit power through closed-loop power control. Terminals in TDD mode do not need to consider whether SAR is met, and the use of existing power control mechanisms will not exceed the SAR requirement range. However, if the scheme shown in the embodiment of Figure 3 is used to determine the terminal's transmit power, since the terminal does not consider power fallback to meet SAR requirements, the use of existing power control methods will result in excessive power increases, which may not meet SAR requirements. To this end, the following embodiments are provided to ensure that the terminal's uplink communication meets SAR requirements.

[0140] 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:

[0141] S401. The terminal determines a residual power of the first power relative to the second power.

[0142] According to the calculation formula of the power headroom in the above-mentioned existing formula 3, since in this embodiment, the terminal does not consider power backoff for meeting the human body radiation requirement, the power headroom may be a negative number.

[0143] In this embodiment, the terminal determines the remaining power according to the solution of this embodiment, and the remaining power is the remaining power of the first power relative to the second power. The meanings of the first power and the second power can be referred to the description of the embodiment shown in Figure 3, which will not be repeated here.

[0144] Among them, when the uplink communication of the terminal meets the SAR requirements, the remaining power PH type1b,f,c (i,j,q d ,l)Satisfy formula 5-1: The remaining power is a positive number;

[0145] When the terminal transmits at high power for a period of time and does not meet the SAR requirement, the remaining power PHtype1b,f,c (i,j,q d ,l)Satisfy formula 5-2: The remaining power may be negative;

[0146] Among them, P CMAX,f,c (i) is the second power corresponding to transmission opportunity i; P OPUSCHb , f,c (j) is the output power of the physical uplink shared channel (PUSCH) of the portion of bandwidth b, carrier f, and serving cell c; is the number of resource blocks of PUSCH resources allocated for transmission opportunity i on partial bandwidth b, carrier f, and serving cell c; μ is the subcarrier spacing; α b,f,c (j) is the compensation factor for path loss; PL b,f,c (q d ) is the estimated path loss over the partial bandwidth b, carrier f, and serving cell c; Δ TF,b,f,c (i) is the power parameter related to the modulation scheme on the partial bandwidth b, carrier f, and serving cell c; f b,f,c (i, l) is the parameter related to the closed-loop power adjustment of transmission opportunity i on partial bandwidth b, carrier f, and serving cell c; P default It is the default transmit power that meets the human body radiation requirements.

[0147] When using formula 5-2 to calculate the remaining power, the remaining power may be a negative number. This is because, in formula 5-2, the minuend P is CMAX,f,c (i) Subtract (P PowerClass -P default ). For example, P default =23dBm.

[0148] For example, P PowerClass =26dBm, use formula 5-2 to calculate the remaining power, where P CMAX,f,c (i)-(P PowerClass -P default )=P CMAX,f,c (i)-(26-23)=P CMAX,f,c (i) -3. This indicates that the transmit power configured on the network side needs to be backed off by 3dBm to control the terminal's uplink transmit power.

[0149] For example, P PowerClass =29dBm, use formula 5-2 to calculate the remaining power, where P CMAX,f,c (i)-(P PowerClass -P default )=P CMAX,f,c (i)-(29-23)=P CMAX,f,c(i) -6. This indicates that the transmit power configured on the network side needs to be backed off by 6dBm to control the terminal's uplink transmit power.

[0150] The meanings of other parameters in Formula 5-1 and Formula 5-2 can be referred to existing standards or protocols and will not be repeated here.

[0151] It can be understood that in the above formula 5-2, the minuend P CMAX,f,c (i) You can also use the actual P CMAX,f,c (i) The maximum transmit power supported by the terminal or the reference transmit power is used to determine the remaining power, both of which make the remaining power a negative number.

[0152] S402: The terminal sends first information to the network device. Correspondingly, the network device receives the first information.

[0153] The first information is used to indicate the above-mentioned remaining power.

[0154] When the remaining power reported by the terminal is a positive number, it is used to indicate that the network side can still schedule the terminal to transmit at high power.

[0155] When the remaining power reported by the terminal is negative, it is used to indicate the high power transmission status of the current terminal on the network side, so that the network side can control the high power transmission of the terminal according to the high power transmission status of the current terminal. For example, when scheduling the terminal in the future, a smaller P EMAX,c .

[0156] This step is optional and is indicated by a dotted line in the figure.

[0157] After the terminal determines the remaining power, subsequent uplink communications will perform one of the following steps:

[0158] S403a. When the remaining power is a positive number, the terminal continues to perform uplink communication at the first power.

[0159] S403b: When the remaining power is negative, the terminal performs uplink communication at a third power, where the third power is the difference between the second power and the first power backoff amount, and the first power backoff amount corresponds to the remaining power.

[0160] When the remaining power is positive, it indicates that the terminal can still transmit at high power, and thus the terminal continues to perform uplink communication at the first power. PowerClass =29dBm, when the remaining power reported by the terminal is a positive number, it means that the uplink signal can continue to be sent at a transmit power of 29dBm.

[0161] If the remaining power is negative, it indicates that if the terminal continues to transmit at the first power, it will not meet the SAR requirement and needs to perform power backoff. Therefore, the terminal performs power backoff based on the first power to obtain a third power, and then performs uplink communication at the third power.

[0162] In addition, the power backoff amount corresponds to the remaining power. PowerClass =29dBm, when the remaining power reported by the terminal is -3dBm~0dBm, it means that the uplink signal can be continued to be sent with a send power of 3dBm backed off, that is, the third power is 26dBm; when the remaining power reported by the terminal is -6dBm~-3dBm, it means that the uplink signal can be continued to be sent with a send power of 6dBm backed off, that is, the third power is 23dBm.

[0163] According to a communication method provided in an embodiment of the present application, by having the terminal count the high-power transmission situations and reporting the remaining power to support negative numbers, it is possible to more flexibly support the high-power transmission of the terminal while reducing the complexity of the network side.

[0164] In another embodiment, a new type of remaining power reporting method may be introduced. The remaining power may be a transmitted duty cycle obtained based on a reference transmit power and a first power, or a duty cycle of a remaining transmit duration obtained based on a reference transmit power and a first power. Thus, the network side may determine the power for subsequent scheduling of the terminal for uplink communication based on the reported remaining power.

[0165] In addition, the terminal can also provide feedback to the network device regarding the power control adjustment amount, indicating the range within which the network can further increase the transmit power. For example, a 3dB feedback from the terminal indicates that the transmit power level can be increased by another 3dB; a -3dB feedback from the terminal indicates that the transmit power level needs to be reduced by 3dB. The network's power control increase can be less than or equal to the power level reported by the terminal.

[0166] Different modulation schemes used by terminals, different waveforms used to transmit uplink signals, or different resource allocation locations for transmitting uplink signals can all affect the terminal's transmit power. In the prior art, the power backoff amounts corresponding to different modulation schemes, different waveforms, and different resource allocation locations are uniformly predetermined by protocol, and the network side determines them using a table lookup. In another embodiment of the present application, if supported by the terminal's capabilities, the terminal can determine the power backoff amount based on its own capabilities, rather than using a uniform protocol-specified method. The network side allows the terminal to report its capabilities, which indicate at least one of the following: the power backoff amount corresponding to different modulation modes, the power backoff amount corresponding to different waveforms, and the power backoff amount corresponding to different resource block (RB) allocation locations. The power backoff amount is associated with the modulation mode, waveform, and RB allocation location. For example, the terminal sends second information to a network device. In response, the network device receives the second information. The second information indicates at least one of the following: a second power backoff amount corresponding to at least one modulation mode, a third power backoff amount corresponding to at least one waveform, and a fourth power backoff amount corresponding to at least one resource block allocation location. RB allocation locations include edge RBs, outer RBs, and center RBs. The network can, based on actual conditions, allow or prohibit the terminal from backing off the corresponding power backoff amount based on its capabilities. For example, based on the fourth power backoff amount corresponding to at least one RB allocation position reported by the terminal, the network can configure the terminal to use a conservative power backoff amount when allocated to an edge RB; and configure the terminal to use the power backoff amount corresponding to the terminal's capabilities when allocated to a center RB. This allows high-capability terminals to determine the power backoff amount based on their actual capabilities.

[0167] It is understandable that the embodiment shown in FIG. 3 and the embodiment shown in FIG. 4 can be implemented independently or in combination.

[0168] The present application also provides a communication solution that increases the transmission power of the terminal by raising the power of the terminal for uplink communication to a certain extent.

[0169] As shown in FIG5 , a flow chart of another communication method provided in an embodiment of the present application is shown. Exemplarily, the method may include the following steps:

[0170] S501. The terminal obtains a power boost value Δp.

[0171] The power increase value Δp is proportional to the maximum transmit power P of the terminal. PowerClass For example, for P PowerClass =26dBm terminal, the maximum value of Δp does not exceed 3dBm; for example, for P PowerClass=29dBm, the maximum value of Δp does not exceed 6dBm. And so on.

[0172] The terminal can report its capabilities to the network device, and the network side configures the corresponding Δp based on the terminal's capabilities.

[0173] The terminal may also determine Δp according to its own capabilities and indicate the Δp adopted by itself to the network device.

[0174] Exemplarily, Δp is greater than or equal to 0 dBm.

[0175] S502. The terminal determines a first power.

[0176] The terminal determines the first power according to Δp.

[0177] The first power is the output power P of the terminal corresponding to the carrier f and the serving cell c. CMAX,f,c , bandwidth b, carrier f, and output power of the physical uplink shared channel PUSCH of serving cell c Subcarrier spacing μ, fractional bandwidth b, carrier f, number of resource blocks of allocated PUSCH resources for transmission opportunity i on serving cell c Path loss compensation factor α b,f,c (j), estimated path loss PL on partial bandwidth b, carrier f, and serving cell c b,f,c (q d ), power parameters Δ related to the modulation scheme on the partial bandwidth b, carrier f, and serving cell c TF,b,f,c (i), closed-loop power adjustment parameters f for transmission opportunity i on partial bandwidth b, carrier f, and serving cell c b,f,c (i,l), Δp is determined.

[0178] For example, the first power P PUSCH,b,f,c (i,j,q d ,l) satisfies the following formula 6:

[0179] It can be seen that compared with the existing formula 2, the first power in this embodiment is increased by Δp.

[0180] Therefore, the network device can determine the specific resource allocation for uplink data transmission based on the increased power.

[0181] S503. The terminal performs uplink communication with the network device based on the first power.

[0182] After determining the first power, the terminal sends an uplink signal to the network device at the first power. Correspondingly, the network device receives the uplink signal sent by the terminal, where the uplink signal is sent based on the first power.

[0183] The above solution can be applied to terminals in FDD mode or terminals in TDD mode. Alternatively, terminals in TDD mode can also use the above existing power determination method to determine the transmit power.

[0184] According to a communication method provided in an embodiment of the present application, the transmission power of the terminal is improved by raising the power of the uplink communication of the terminal to a certain extent.

[0185] In addition, the terminal can also set the path loss compensation factor α b,f,c (j) is greater than 1 to increase the first power. For details, please refer to the description of the embodiment shown in Figure 3, which will not be repeated here.

[0186] The network side can continuously increase the terminal's transmit power through closed-loop power control. Terminals in TDD mode do not need to consider whether SAR is met, and the use of existing power control mechanisms will not exceed the SAR requirement range. However, if the scheme shown in the embodiment of Figure 5 is used to determine the terminal's transmit power, since the terminal does not consider power fallback to meet SAR requirements, the use of existing power control methods will result in excessive power increases, which may not meet SAR requirements. To this end, the following embodiments are provided to ensure that the terminal's uplink communication meets SAR requirements.

[0187] As shown in Figure 6, it is a flowchart of another communication method provided in an embodiment of the present application. Exemplarily, the method may include the following steps:

[0188] S601. The terminal determines the first power relative to P CMAX,f,c of the remaining power.

[0189] According to the calculation formula of the power headroom in the above-mentioned existing formula 3, since in this embodiment, the terminal does not consider power backoff for meeting the human body radiation requirement, the power headroom may be a negative number.

[0190] In this embodiment, the terminal determines the remaining power according to the solution of this embodiment, and the remaining power is the first power relative to P CMAX,f,c of the remaining power.

[0191] Among them, when the uplink communication of the terminal meets the SAR requirements, the remaining power PH type1b,f,c (i,j,q d ,l)Satisfy formula 7-1: The remaining power is a positive number;

[0192] When the terminal transmits at high power for a period of time and does not meet the SAR requirement, the remaining power PH type1b,f,c(i,j,q d ,l)Satisfy formula 7-2: The remaining power is negative.

[0193] The meanings of the parameters in the above formula 7-1 and formula 7-2 can be found in the embodiment shown in FIG5 and the description of the prior art, and will not be repeated here.

[0194] When using Formula 7-2 to calculate the residual power, the residual power may be negative. This is because Formula 7-2 further subtracts Δp from Formula 7-1, making the residual power potentially negative.

[0195] S602: The terminal sends first information to the network device. Correspondingly, the network device receives the first information.

[0196] The first information is used to indicate the above-mentioned remaining power.

[0197] When the remaining power reported by the terminal is a positive number, it is used to indicate that the network side can still schedule the terminal to transmit at high power.

[0198] When the remaining power reported by the terminal is negative, it is used to indicate the high power transmission status of the current terminal on the network side, so that the network side can control the high power transmission of the terminal according to the high power transmission status of the current terminal. For example, when scheduling the terminal in the future, a smaller P EMAX,c .

[0199] This step is optional and is indicated by a dotted line in the figure.

[0200] After the terminal determines the remaining power, subsequent uplink communications will perform one of the following steps:

[0201] S603a. When the remaining power is a positive number, the terminal continues to perform uplink communication at the first power.

[0202] S603b. When the remaining power is negative, the terminal performs uplink communication at a second power, which is the maximum transmit power P based on the terminal's capability. PowerClass and the first power backoff amount, where the first power backoff amount corresponds to the remaining power.

[0203] When the remaining power is positive, it indicates that the terminal can still transmit at high power, and thus the terminal continues to perform uplink communication at the first power. PowerClass =29dBm, when the remaining power reported by the terminal is a positive number, it means that uplink transmission can continue at the current transmission power of 29dBm.

[0204] If the remaining power is negative, it indicates that if the terminal continues to transmit at the first power, it will not meet the SAR requirement and needs to perform power backoff. Therefore, the terminal performs power backoff based on the first power to obtain the second power, and then performs uplink communication at the second power.

[0205] In addition, the power backoff amount corresponds to the remaining power. PowerClass =29dBm, when the remaining power reported by the terminal is -3dBm~0dBm, it means that the uplink can be continued with a send power of 3dBm backed off, that is, the second power is 26dBm; when the remaining power reported by the terminal is -6dBm~-3dBm, it means that the uplink can be continued with a send power of 6dBm backed off, that is, the second power is 23dBm.

[0206] According to a communication method provided in an embodiment of the present application, by having the terminal count the high-power transmission situations and reporting the remaining power to support negative numbers, it is possible to more flexibly support the high-power transmission of the terminal while reducing the complexity of the network side.

[0207] It can be understood that in the above embodiments, the methods and / or steps implemented by the terminal can also be implemented by components that can be used for the terminal (such as chips or circuits); the methods and / or steps implemented by the network device can also be implemented by components that can be used for the network device (such as chips or circuits).

[0208] The above description mainly describes the solutions provided by the embodiments of the present application from the perspective of the interaction between a terminal and a network device. 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 in the above method embodiments, or a component that can be used for a terminal; alternatively, the communication device can be the network device in the above method embodiments, or a component that can be used for 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.

[0209] 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.

[0210] Based on the same concept of the above communication method, the present application also provides the following communication device:

[0211] As shown in FIG7 , a schematic diagram of the structure of a communication device provided in an embodiment of the present application is shown. The communication device 700 includes a transceiver unit 701 and a processing unit 702 .

[0212] When the communication device is used to implement the functions of the terminal in the above method embodiment, the transceiver unit 701 is used to implement the operation of the terminal in step S302 in the embodiment shown in Figure 3, and the processing unit 702 is used to implement the step S301 in the embodiment shown in Figure 3; or, the transceiver unit 701 is used to implement the operation of the terminal in one or more of steps S402, S403a, and S403b in the embodiment shown in Figure 4, and the processing unit 702 is used to implement the step S401 in the embodiment shown in Figure 4; or, the transceiver unit 701 is used to implement the operation of the terminal in step S503 in the embodiment shown in Figure 5, and the processing unit 702 is used to implement one or more of steps S501 and S502 in the embodiment shown in Figure 5; or, the transceiver unit 701 is used to implement the operation of the terminal in one or more of steps S602, S603a, and S603b in the embodiment shown in Figure 6, and the processing unit 702 is used to implement step S601 in the embodiment shown in Figure 6.

[0213] When the communication device is used to implement the functions of the network device in the above method embodiment, the transceiver unit 701 is used to implement the operation of the network device in step S302 in the embodiment shown in Figure 3; or, the transceiver unit 701 is used to implement the operation of the network device in one or more of steps S402, S403a, and S403b in the embodiment shown in Figure 4; or, the transceiver unit 701 is used to implement the operation of the network device in step S503 in the embodiment shown in Figure 5; or, the transceiver unit 701 is used to implement the operation of the network device in one or more of steps S602, S603a, and S603b in the embodiment shown in Figure 6.

[0214] For the specific implementation of the above-mentioned transceiver unit 701 and the processing unit 702, reference may be made to the description in the above-mentioned method embodiment.

[0215] As shown in Figure 8, it is a structural diagram of another communication device provided in an embodiment of the present application, and the communication device 800 includes one or more processors 801 (one processor is illustrated in the figure). Optionally, the communication device 800 may further include an interface circuit 802 (represented by a dotted line in the figure), and the processor 801 and the interface circuit 802 are coupled to each other. It is understandable that the interface circuit 802 can be a transceiver or an input / output interface. Optionally, the communication device 800 may further include a memory 803 (represented by a dotted line in the figure). The memory 803 is used to store instructions executed by the processor 801, or to store input data required for the processor 801 to run the instruction, or to store data generated after the processor 801 runs the instruction.

[0216] In which, when the communication device is used to implement the function of the terminal in the above method embodiment, the interface circuit 802 is used to implement the operation of the terminal in step S302 in the embodiment shown in Figure 3, and the processor 801 is used to implement step S301 in the embodiment shown in Figure 3; or, the interface circuit 802 is used to implement the operation of the terminal in one or more of steps S402, S403a, and S403b in the embodiment shown in Figure 4, and the processor 801 is used to implement step S401 in the embodiment shown in Figure 4; or, the interface circuit 802 is used to implement the operation of the terminal in step S503 in the embodiment shown in Figure 5, and the processor 801 is used to implement one or more of steps S501 and S502 in the embodiment shown in Figure 5; or, the interface circuit 802 is used to implement the operation of the terminal in one or more of steps S602, S603a, and S603b in the embodiment shown in Figure 6, and the processor 801 is used to implement step S601 in the embodiment shown in Figure 6.

[0217] When the communication device is used to implement the functions of the network device in the above method embodiment, the interface circuit 802 is used to implement the operation of the network device in step S302 in the embodiment shown in Figure 3; or, the interface circuit 802 is used to implement the operation of the network device in one or more of steps S402, S403a, and S403b in the embodiment shown in Figure 4; or, the interface circuit 802 is used to implement the operation of the network device in step S503 in the embodiment shown in Figure 5; or, the interface circuit 802 is used to implement the operation of the network device in one or more of steps S602, S603a, and S603b in the embodiment shown in Figure 6.

[0218] When the communication device is a chip used in a terminal, the chip implements the terminal functions in the above method embodiments. The chip receives information from other modules in the terminal (such as a radio frequency module or antenna), which is information sent by the network device to the terminal; or the chip sends information to other modules in the terminal (such as a radio frequency module or antenna), which is information sent by the terminal to the network device.

[0219] 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 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] An embodiment of the present application also provides a communication system, including the above-mentioned communication device.

[0226] 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.

[0227] 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 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. 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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).

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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 includes: Determine a first power, where the first power is less than or equal to a second power, and the second power is the output power of a terminal corresponding to a carrier f and a serving cell c; the second power is independent of a first power backoff parameter, and the first power backoff parameter is a power backoff parameter for meeting human radiation requirements; Perform uplink communication based on the first power.

2. The method according to claim 1, wherein The second power P CMAX,f,c satisfies: P CMAX_L,f,c ≤ P CMAX,f,c ≤ P CMAX_H,f,c where, P CMAX_L,f,c = MIN{P EMAX,c - ΔT C,c , (P PowerClass ) - MAX(MAX(MPR c + ΔMPR c , A - MPR c ) + ΔT IB,c + ΔT C,c + ΔT RxSRS , P - MPR c )}; P CMAX_H,f,c = MIN{P EMAX,c , P PowerClass}; Among them, P EMAX,c is the maximum transmission power configured by the network side; ΔT C,c is the power relaxation parameter corresponding to the serving cell c; P PowerClass is the maximum transmission power based on the capabilities of the terminal; MPR c is the power back-off amount corresponding to the serving cell c according to the waveform adjustment method and resource block allocation; ΔMPR c is the additional power back-off amount for the frequency band; A-MPR c is the additional maximum power back-off of the serving cell c; ΔT IB,c is the additional tolerance of the serving cell c; ΔT RxSRS is the power parameter related to the sounding reference signal configuration; P-MPR c is the back-off parameter related to the electromagnetic energy absorption requirement corresponding to the serving cell c.

3. The method according to claim 2, characterized in that, The method further includes: Determine the remaining power of the first power relative to the second power; When the remaining power is positive, continue to perform uplink communication with the first power; When the remaining power is negative, uplink communication is performed at a third power, where the third power is the difference between P PowerClass and a first power back-off amount, and the first power back-off amount corresponds to the remaining power.

4. The method according to claim 3, characterized in that The method further includes: Send a first message, where the first message is used to indicate the remaining power.

5. The method according to claim 3 or 4, characterized in that: When the first power meets the human body radiation requirement, the remaining power PH type1b,f,c (i,j,q d ,l) meets When the first power does not meet the human body radiation requirement, the remaining power PH type1b,f,c (i,j,q d ,l) satisfies Among them, P CMAX,f,c (i) is the second power corresponding to the transmission opportunity i; is the output power of the physical uplink shared channel PUSCH of the partial bandwidth b, the carrier f, and the serving cell c; the is the number of resource blocks of the PUSCH resource allocated for the transmission occasion i on the partial bandwidth b, the carrier f, and the serving cell c; μ is the subcarrier spacing; α b,f,c (j) is the compensation factor for path loss; PL b,f,c (q d ) is the estimated path loss on the partial bandwidth b, the carrier f, and the serving cell c; Δ TF,b,f,c (i) is the power parameter related to the modulation scheme on the partial bandwidth b, the carrier f, and the serving cell c; f b,f,c (i, l) are the parameters related to the closed-loop power adjustment of the transmission occasion i on the partial bandwidth b, the carrier f, and the serving cell c; P default is the default transmit power that meets the human radiation requirement.

6. The method according to any one of claims 3 to 5, characterized in that, The remaining power is a transmitted duty cycle obtained based on a reference transmission power and the first power, or a duty cycle of a remaining transmission duration obtained based on the reference transmission power and the first power.

7. The method according to claim 5 or 6, characterized in that, The α b,f,c (j) is greater than 1, and the α b,f,c (j) is associated with the second power.

8. The method according to any one of claims 1-7, characterized in that, The method further includes: Send a second message, where the second message is used to indicate at least one of the following messages: a second power backoff amount corresponding to a modulation mode, a third power backoff amount corresponding to a waveform, and a fourth power backoff amount corresponding to a resource block allocation position.

9. A communication method, characterized in that, The method includes: Receive an uplink signal, where the uplink signal is based on a first power, and the first power is less than or equal to a second power, and the second power is the output power of a terminal corresponding to a carrier f and a serving cell c; the second power is independent of a first power backoff parameter, and the first power backoff parameter is a power backoff parameter for meeting human radiation requirements.

10. The method according to claim 9, wherein The second power P CMAX,f,c satisfies: P CMAX_L,f,c ≤ P CMAX,f,c ≤ P CMAX_H,f,c where P CMAX_L,f,c = MIN{P EMAX,c - ΔT C,c , (P PowerClass ) - MAX(MAX(MPR c + ΔMPR c , A - MPR c ) + ΔT IB,c + ΔT C,c + ΔT RxSRS , P - MPR c )}; P CMAX_H,f,c = MIN{P EMAX,c , P PowerClass}; Among them, P EMAX,c is the maximum transmission power configured by the network side; ΔT C,c is the power relaxation parameter corresponding to the serving cell c; P PowerClass is the maximum transmission power based on the capabilities of the terminal; MPR c is the power back-off amount corresponding to the serving cell c according to the waveform adjustment method and resource block allocation; ΔMPR c is the additional power back-off amount for the frequency band; A-MPR c is the additional maximum power back-off of the serving cell c; ΔT IB,c is the additional tolerance of the serving cell c; ΔT RxSRS is the power parameter related to the sounding reference signal configuration; P-MPR c is the back-off parameter related to the electromagnetic energy absorption requirement corresponding to the serving cell c.

11. The method according to claim 10, characterized in that The method further includes: Receive a first message, where the first message is used to indicate the remaining power, and the remaining power is the remaining power of the first power relative to the second power.

12. The method according to claim 11, characterized in that When the remaining power is positive, the uplink signal continues to be based on the first power; When the remaining power is negative, the uplink signal is based on a third power, which is the difference between the P PowerClass and a first power backoff amount corresponding to the remaining power.

13. The method according to claim 11 or 12, characterized in that: When the remaining power is positive, the remaining power PH type1b,f,c (i,j,q d ,l) satisfies When the remaining power is negative, the remaining power PH type1b,f,c (i,j,q d ,l) satisfies Among them, P CMAX,f,c (i) is the second power corresponding to the transmission opportunity i; is the output power of the physical uplink shared channel PUSCH of the partial bandwidth b, the carrier f, and the serving cell c; the is the number of resource blocks of the PUSCH resource allocated for the transmission occasion i on the partial bandwidth b, the carrier f, and the serving cell c; μ is the subcarrier spacing; α b,f,c (j) is the compensation factor for path loss; PL b,f,c (q d ) is the estimated path loss on the partial bandwidth b, the carrier f, and the serving cell c; Δ TF,b,f,c (i) is the power parameter related to the modulation scheme on the partial bandwidth b, the carrier f, and the serving cell c; f b,f,c (i, l) are the relevant parameters for the closed-loop power adjustment of the transmission occasion i on the partial bandwidth b, the carrier f, and the serving cell c; P default is the default transmit power that meets the human radiation requirement.

14. The method according to any one of claims 11-13, characterized in that, The remaining power is a transmitted duty cycle obtained based on a reference transmission power and the first power, or a duty cycle of a remaining transmission duration obtained based on the reference transmission power and the first power.

15. The method according to claim 13 or 14, characterized in that Said α b,f,c (j) is greater than 1, and said α b,f,c (j) is associated with said second power.

16. The method according to any one of claims 9-15, characterized in that The method further includes: Receive a second message, where the second message is used to indicate at least one of the following messages: a second power backoff amount corresponding to a modulation mode, a third power backoff amount corresponding to a waveform, and a fourth power backoff amount corresponding to a resource block allocation position.

17. A communication method, characterized in that, The method includes: Obtain a power boost value Δp; Determine a first power, where the first power is the output power P of a terminal corresponding to a carrier f and a serving cell c CMAX,f,c , a partial bandwidth b, the output power of the physical uplink shared channel PUSCH of the carrier f and the serving cell c The number of resource blocks of the PUSCH resources allocated for the transmission occasion i on the subcarrier spacing μ, the partial bandwidth b, the carrier f, and the serving cell c Compensation factor α for path loss b,f,c (j), the partial bandwidth b, the carrier f, the estimated path loss PL on the serving cell c b,f,c (q d ), the partial bandwidth b, the carrier f, the power parameter Δ related to the modulation scheme on the serving cell c TF,b,f,c (i), the relevant parameter f for closed-loop power adjustment of the transmission opportunity i on the partial bandwidth b, the carrier f, and the serving cell c b,f,c (i, l), determined by the Δp; Perform uplink communication based on the first power.

18. The method according to claim 17, wherein The first power P PUSCH,b,f,c (i, j, q d , l) satisfies:

19. The method according to claim 17 or 18, characterized in that, The power boost value is associated with the maximum transmission power P based on the capabilities of the terminal PowerClass associated.

20. The method according to any one of claims 17 to 19, characterized in that The method further includes: Determine the remaining power of the first power relative to the P CMAX,f,c ; When the remaining power is positive, continue to perform uplink communication with the first power; When the remaining power is negative, perform uplink communication with a second power, where the second power is the difference between the maximum transmission power based on the terminal's capabilities and a first power backoff amount, and the first power backoff amount corresponds to the remaining power.

21. The method according to claim 20, wherein The method further includes: Send a first message, where the first message is used to indicate the remaining power.

22. The method according to claim 20 or 21, characterized in that: When the first power meets the human body radiation requirement, the remaining power PH type1b,f,c (i, j, q d , l) satisfies When the first power does not meet the human body radiation requirement, the remaining power PH type1b,f,c (i,j,q d ,l) meets 23. The method according to any one of claims 17 - 22, wherein said α b,f,c (j) is greater than 1, and said α b,f,c (j) is associated with said P CMAX,f,c associated.

24. The method according to any one of claims 20-23, characterized in that, The remaining power is the transmitted duty cycle obtained based on the reference transmission power and the first power, or the duty cycle of the remaining transmission duration obtained based on the reference transmission power and the first power.

25. The method according to any one of claims 17-24, characterized in that, The method further includes: transmitting second information, where the second information is used to indicate at least one of the following information: a second power back-off amount corresponding to a modulation mode, a third power back-off amount corresponding to a waveform, and a fourth power back-off amount corresponding to a resource block allocation location.

26. A communication method, characterized in that, The method includes: Receive an uplink signal, where the uplink signal is based on a first power, and the first power is the output power P of a terminal corresponding to a carrier f and a serving cell c CMAX,f,c , a partial bandwidth b, the carrier f, and the output power of a physical uplink shared channel PUSCH of the serving cell c The number of resource blocks of the PUSCH resources allocated for the transmission occasion i on the subcarrier spacing μ, the partial bandwidth b, the carrier f, and the serving cell c Compensation factor α for path loss b,f,c (j), the partial bandwidth b, the carrier f, the estimated path loss PL on the serving cell c b,f,c (q d ) the power parameter Δ related to the modulation scheme on the partial bandwidth b, the carrier f, the serving cell c TF,b,f,c (i), the relevant parameter f of the closed-loop power adjustment of the transmission opportunity i on the partial bandwidth b, the carrier f, the serving cell c b,f,c (i, l), determined by the power boost value Δp 27. The method according to claim 26, wherein The first power P PUSCH,b,f,c (i, j, q d , l) satisfies:

28. The method according to claim 26 or 27, characterized in that, The power boost value is associated with the maximum transmission power P based on the capabilities of the terminal PowerClass associated.

29. The method according to any one of claims 26 - 28, characterized in that, The method further includes: Receive first information, the first information being used to indicate remaining power, the remaining power being the remaining power of the first power relative to the P CMAX,f,c of.

30. The method according to claim 29, wherein: when the remaining power is positive, the uplink signal continues to be based on the first power; when the remaining power is negative, the uplink signal is based on a second power, where the second power is the difference between the maximum transmission power based on the capabilities of the terminal and a first power back-off amount, and the first power back-off amount corresponds to the remaining power.

31. The method according to claim 29 or 30, wherein: When the remaining power is positive, the remaining power PH type1b,f,c (i,j,q d ,l) satisfies When the remaining power is negative, the remaining power PH type1b,f,c (i, j, q d , l) satisfies 32. The method according to any one of claims 26-31, wherein the α b,f,c (j) is greater than 1, and the α b,f,c (j) is associated with the P CMAX,f,c associated.

33. The method according to any one of claims 29-32, characterized in that, The remaining power is the transmitted duty cycle obtained based on the reference transmission power and the first power, or the duty cycle of the remaining transmission duration obtained based on the reference transmission power and the first power.

34. The method according to any one of claims 26-33, characterized in that, The method further includes: receiving second information, where the second information is used to indicate at least one of the following information: a second power back-off amount corresponding to a modulation mode, a third power back-off amount corresponding to a waveform, and a fourth power back-off amount corresponding to a resource block allocation location.

35. A communication device, characterized in that, including a unit for implementing the method according to any one of claims 1-8, or including a unit for implementing the method according to any one of claims 9-16, or including a unit for implementing the method according to any one of claims 17-25, or including a unit for implementing the method according to any one of claims 26-34.

36. A communication system, characterized in that, including a terminal and a network device, where the terminal is used to execute the method according to any one of claims 1-8, and the network device is used to execute the method according to any one of claims 9-16.

37. A communication system, characterized in that, including a terminal and a network device, where the terminal is used to execute the method according to any one of claims 17-25, and the network device is used to execute the method according to any one of claims 26-34.

38. A communication device, characterized in that, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the processor executes the computer program, it implements the method according to any one of claims 1-8, or implements the method according to any one of claims 9-16, or implements the method according to any one of claims 17-25, or implements the method according to any one of claims 26-34.

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

40. A computer program product containing instructions, where when the instructions run on a communication device, the communication device is caused to execute the method according to any one of claims 1-34.

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

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