Communication method and related apparatus

Abstract

A communication method and a related apparatus. In the method, a terminal device transmits first information to a network device, the first information being used for indicating the maximum proportion of a first time unit in a first duration. An uplink signal carried in the first time unit is transmitted at a first power level, the first duration further comprises a second time unit, an uplink signal carried in the second time unit is transmitted at a second power level, and the first time unit and the second time unit are non-overlapping time units. The terminal device transmits an uplink signal on the basis of the first information. In the present application, the terminal device can transmit uplink signals of different power levels over different time units (e.g., the first time unit and the second time unit) on the basis of the first information. In this way, the number of time units available for carrying uplink signals is not decreased, so that the terminal device can maintain uplink signal transmission within the first duration, thereby improving the transmission efficiency of uplink signals.

Description

A communication method and related apparatus

[0001] The present application claims priority from the Chinese patent application No. 202411071400.1 filed on August 5, 2024, and entitled "A communication method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular, to a communication method and related apparatus. BACKGROUND

[0003] Specific absorption rate (SAR) is a physical quantity that measures the rate of electromagnetic radiation energy absorbed by a unit mass of biological tissue, and is commonly used to evaluate the energy absorption of human body exposed to radio frequency (RF) electromagnetic field. With the explosive growth of communication devices and the increasing awareness of public health, the requirements for SAR indicators are becoming higher and higher worldwide.

[0004] The terminal device can report the duty cycle to the network device, so that the power of the uplink signal sent by the terminal device meets the requirements of the SAR indicator. The duty cycle represents the maximum proportion of symbols (hereinafter referred to as uplink symbols) that can be used for uplink transmission in a period under the condition of meeting the SAR indicator specified by the regulatory agency. When the terminal device is in a SAR limited state period, the network device schedules uplink symbols for the terminal device based on the duty cycle, and the maximum proportion indicated in the duty cycle is the upper limit of the proportion of uplink symbols in the period.

[0005] The uplink signal sent by the terminal device needs to be carried in the uplink symbol. However, in order to meet the requirements of the duty cycle, the network device needs to reduce the number of uplink symbols, resulting in a reduction in the transmission efficiency of the uplink signal. SUMMARY

[0006] The present application provides a communication method and related apparatus for improving the transmission efficiency of the uplink signal.

[0007] In a first aspect, a communication method is provided. The method can be applied to a terminal side, e.g., a terminal device or a communication module / processing module in the terminal device, or a circuit or chip responsible for communication function in the terminal device (e.g., a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or system in package (SIP) chip containing a modem core), or a circuit or chip responsible for processing function in the terminal device (e.g., a graphics processing unit (GPU)). Taking the case where the method is applied to a terminal device, in the method, the terminal device sends first information to a network device, where the first information is used to indicate a highest proportion of a first time unit in a first time length. The uplink signal carried in the first time unit is transmitted at a first power level, and the first time length further includes a second time unit, the uplink signal carried in the second time unit is transmitted at a second power level, and the first time unit and the second time unit are non-overlapping time units.

[0008] The terminal device transmits an uplink signal based on the first information. Specifically, if the terminal device can select to transmit the uplink signal at the first power level or at the second power level, the uplink signal transmitted at the first power level is carried in the first time unit, and the uplink signal transmitted at the second power level is carried in the second time unit.

[0009] In the present application, the terminal device can transmit uplink signals of different power levels in different time units (e.g., the first time unit and the second time unit) based on the first information. In this way, the number of time units available for carrying uplink signals is not reduced, so that the terminal device can maintain the transmission of uplink signals within the first time length, thereby improving the transmission efficiency of uplink signals.

[0010] In the present application, the first time length includes the first time unit and the second time unit, or in other words, the first time length includes a plurality of time units, and the plurality of time units can be divided into two different types, i.e., the first time unit and the second time unit. Regarding “the uplink signal carried in the first time unit is transmitted at the first power level”, it can be understood as “the first time unit is a time unit in the first time length for carrying the uplink signal transmitted at the first power level”. Regarding “the uplink signal carried in the second time unit is transmitted at the second power level”, it can be understood as “the second time unit is a time unit in the first time length for carrying the uplink signal transmitted at the second power level”.

[0011] The highest proportion of the first time unit in the first time length can be understood as the highest proportion of the number of the first time unit in the number of time units, or can also be understood as the highest proportion of the cumulative time length of the time unit belonging to the first time unit type in the first time length.

[0012] Optionally, the first power level can be a non-zero power value (for example, 28 decibels-milliwatts (dBm)), or a set of multiple non-zero power values (for example, a set of (25 dBm, 28 dBm, 30 dBm)), or a power range (for example, 23 dBm-30 dBm), or a set of multiple power ranges (for example, a set of (21 dBm-23 dBm, 25 dBm-27 dBm, 29 dBm-30 dBm)). The power value or power range of the second power level is different from or not completely the same as the first power level. The description of the second power level is similar to the description of the first power level, and details are described in the foregoing description of the first power level, which will not be described here. Optionally, the power value of the first power level is greater than the power value of the second level.

[0013] Based on the first aspect, in an optional implementation, the terminal device sends second information to the network device. The second information is used to indicate the power difference between the first power level and the second power level. Thus, the network device can schedule the first time unit and / or the second time unit for the terminal device based on the power difference between the first power level and the second power level, using a modulation and coding scheme (MCS) and / or frequency domain resource that is more matched to the power difference, thereby improving the transmission efficiency of the uplink signal.

[0014] Based on the first aspect, in an optional implementation, the terminal device sends third information to the network device. The third information is used to indicate the first time length. Thus, the network device and the terminal device reach an agreement on the time length of the first time length. The first time unit and / or the second time unit scheduled by the network device for the terminal device can be more matched to the needs of the terminal device and meet the SAR index.

[0015] Based on the first aspect, in an optional implementation, the terminal device sends fourth information to the network device, and the fourth information is used to activate the first information. When the first information is activated, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. Thus, the terminal device can select the activation time of the first information, thereby improving the efficiency of the network device in scheduling the first time unit and the second time unit.

[0016] In an optional implementation based on the first aspect, the fourth information is used to indicate a second duration in which the terminal device is in the SAR limited state. Specifically, when the terminal device is in the SAR limited state, the fourth information is sent to the network device, so as to notify the network device that the terminal device is in the SAR limited state for the second duration. After receiving the fourth information, the network device activates the first information, and within the second duration indicated by the fourth information, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. Thus, the terminal device requests the network device to schedule the first time unit and the second time unit based on the first information during the SAR limited state, which improves the efficiency of the network device in scheduling the first time unit and the second time unit.

[0017] In an optional implementation based on the first aspect, the fourth information is used to indicate that the terminal device is in the SAR limited state. After receiving the fourth information, the network device can determine that the terminal device is in the SAR limited state. Then, the first information is activated, and the network device schedules the first time unit and the second time unit for the terminal device based on the first information.

[0018] In an optional implementation based on the first aspect, the terminal device sends fifth information to the network device, and correspondingly, the network device receives the fifth information from the terminal device. The fifth information is used to deactivate the first information. After receiving the fifth information, the first information is deactivated, and the network device no longer schedules the first time unit and the second time unit for the terminal device based on the first information. Thus, the power of the terminal device in sending the uplink signal does not need to be limited by the scheduling distribution of the first time unit and the second time unit, which improves the transmission efficiency of the uplink signal.

[0019] In an optional implementation based on the first aspect, the fifth information is used to indicate that the terminal device is in a non-SAR limited state; or it can also be understood that the fifth information is used to indicate that the terminal device has exited the SAR limited state, or it can also be understood that the fifth information is used to indicate that the terminal device is not in the SAR limited state.

[0020] In an optional implementation based on the first aspect, the fourth information can be carried in a MAC CE, UCI, RRC signaling, UAI, or power headroom report (PHR).

[0021] In a second aspect, the present application provides a communication method. The method can be applied to a terminal side, for example, a network device or a communication module / processing module in the network device, or a circuit or chip responsible for communication function in the network device (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core), or a circuit or chip responsible for processing function in the network device (such as a graphics processing unit (GPU)). Taking the case where the method is applied to the network device, in the method, the network device receives first information from a terminal device, the first information being used to indicate a highest proportion of a first time unit in a first time length, wherein an uplink signal carried in the first time unit is transmitted at a first power level, the first time length further includes a second time unit, an uplink signal carried in the second time unit is transmitted at a second power level, and the first time unit and the second time unit are non-overlapping time units.

[0022] After receiving the first information, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. In the present application, after the network device schedules the first time unit and the second time unit for the terminal device, the proportion of the first time unit in the first time length should be less than or equal to the highest proportion indicated by the first information, or in other words, the highest proportion indicated by the first information is met.

[0023] In the present application, the terminal device can transmit uplink signals of different power levels on different time units (for example, the first time unit and the second time unit) based on the first information. In this way, the number of time units available for carrying uplink signals is not reduced, so that the terminal device can maintain the transmission of uplink signals within the first time length, thereby improving the transmission efficiency of uplink signals.

[0024] Based on the second aspect, in an optional implementation, the network device receives second information from the terminal device. The second information is used to indicate a power difference between the first power level and the second power level. Thus, the network device can schedule the first time unit and / or the second time unit for the terminal device based on the power difference between the first power level and the second power level, using a modulation and coding scheme (MCS) and / or frequency domain resource that is more matched to the power difference, thereby improving the transmission efficiency of uplink signals.

[0025] In an optional implementation based on the second aspect, the network device receives third information from the terminal device. The third information is used to indicate the first time length. Thus, the network device and the terminal device reach an agreement on the time length of the first time length. The network device can schedule the first time unit and / or the second time unit for the terminal device to better match the needs of the terminal device and meet the SAR index.

[0026] In an optional implementation based on the second aspect, the network device receives fourth information from the terminal device. The fourth information is used to activate the first information. When the first information is activated, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. Thus, the terminal device can select the activation time of the first information, and the efficiency of the network device scheduling the first time unit and the second time unit is improved.

[0027] In an optional implementation based on the second aspect, the fourth information is used to indicate the second time length during which the terminal device is in the SAR limited state. Specifically, when the terminal device is in the SAR limited state, the fourth information is sent to the network device to inform the network device of the second time length during which the terminal device is in the SAR limited state. After receiving the fourth information, the network device activates the first information, and schedules the first time unit and the second time unit for the terminal device based on the first information within the second time length indicated by the fourth information. Thus, the terminal device requests the network device to schedule the first time unit and the second time unit based on the first information during the SAR limited state, and the efficiency of the network device scheduling the first time unit and the second time unit is improved.

[0028] In an optional implementation based on the second aspect, the fourth information is used to indicate that the terminal device is in the SAR limited state. After receiving the fourth information, the network device can determine that the terminal device is in the SAR limited state. Then, the first information is activated, and the network device schedules the first time unit and the second time unit for the terminal device based on the first information.

[0029] In an optional implementation based on the second aspect, the network device receives fifth information from the terminal device. Correspondingly, the network device receives the fifth information from the terminal device. The fifth information is used to deactivate the first information. After receiving the fifth information, the first information is deactivated, and the network device no longer schedules the first time unit and the second time unit for the terminal device based on the first information. Thus, the power of the terminal device sending the uplink signal does not need to be limited by the scheduling distribution of the first time unit and the second time unit, and the transmission efficiency of the uplink signal is improved.

[0030] In an optional implementation based on the second aspect, the fifth information is used to indicate that the terminal device is in a non-SAR limited state; or it can be understood that the fifth information is used to indicate that the terminal device has exited the SAR limited state, or it can also be understood that the fifth information is used to indicate that the terminal device is not in the SAR limited state.

[0031] In an optional implementation based on the second aspect, the fourth information can be carried in a MAC CE, UCI, RRC signaling, UAI, or power headroom report (PHR).

[0032] In a third aspect, the present application provides a communication apparatus, which is a terminal device, and the communication apparatus comprises a transceiver unit and a processing unit. The transceiver unit is configured to send first information, the first information being used to indicate a highest proportion of a first time unit in a first time length, wherein an uplink signal carried in the first time unit is sent at a first power level, the first time length further comprises a second time unit, an uplink signal carried in the second time unit is sent at a second power level, and the first time unit and the second time unit are non-overlapping time units.

[0033] The processing unit is configured to send an uplink signal based on the first information.

[0034] In the third aspect of the present application, the constituent modules of the communication apparatus can also be used to perform the steps performed in the various possible implementation manners of the first aspect and achieve the corresponding technical effects. For details, please refer to the first aspect, which will not be described here.

[0035] In a fourth aspect, the present application provides a communication apparatus, which is a network device, and the communication apparatus comprises a transceiver unit and a processing unit. The transceiver unit is configured to receive first information, the first information being used to indicate a highest proportion of a first time unit in a first time length, wherein an uplink signal carried in the first time unit is sent at a first power level, the first time length further comprises a second time unit, an uplink signal carried in the second time unit is sent at a second power level, and the first time unit and the second time unit are non-overlapping time units.

[0036] The processing unit is configured to schedule the first time unit and the second time unit for the terminal device based on the first information.

[0037] In the fourth aspect of the present application, the constituent modules of the communication apparatus can also be used to perform the steps performed in the various possible implementation manners of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be described here.

[0038] The fifth aspect of the present application provides a communication apparatus, comprising at least one processor; the at least one processor is configured to execute the program or the instruction, so that the communication apparatus implements the method in any possible implementation manner of any one of the first aspect to the second aspect. Optionally, the communication apparatus can comprise the memory, and the at least one processor is coupled with the memory; the memory is configured to store the program or the instruction.

[0039] The sixth aspect of the present application provides a communication apparatus, comprising at least one logic circuit and an input / output interface; the logic circuit is configured to execute the method in any possible implementation manner of any one of the first aspect to the second aspect.

[0040] The seventh aspect of the present application provides a communication system, comprising the terminal device and the network device.

[0041] The eighth aspect of the present application provides a computer readable storage medium, which is configured to store one or more computer execution instructions; when the computer execution instructions are executed by a processor, the processor executes the method in any possible implementation manner of any one of the first aspect to the second aspect.

[0042] The ninth aspect of the present application provides a computer program product (or computer program), when the computer program in the computer program product is executed by a processor, the processor executes the method in any possible implementation manner of any one of the first aspect to the second aspect.

[0043] The tenth aspect of the present application provides a chip system, comprising at least one processor, which is configured to support the communication apparatus to implement the method in any possible implementation manner of any one of the first aspect to the second aspect.

[0044] In a possible design, the chip system can further comprise a memory, which is configured to store necessary program instructions and data of the communication apparatus. The chip system can be composed of a chip, or can comprise the chip and other discrete devices. Optionally, the chip system further comprises an interface circuit, which provides program instructions and / or data for the at least one processor.

[0045] The technical effects brought by any one of the second aspect to the tenth aspect can be referred to the technical effects brought by different design manners of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0046] FIG. 1 is a schematic diagram of a possible implementation of maximum power reduction;

[0047] FIG. 2 is a schematic diagram of a possible power limiting manner of a terminal device;

[0048] Fig. 3 is a schematic diagram of another power limiting manner of the terminal device;

[0049] Fig. 4 is a schematic diagram of a possible, non-restricting system to which the communication method and related apparatuses in the present application are applied;

[0050] Fig. 5 is a schematic diagram of another possible, non-restricting system to which the communication method and related apparatuses in the present application are applied;

[0051] Fig. 6 is a diagram of the functional division and protocol layer structure of an open access network device;

[0052] Fig. 7 is a schematic diagram of a possible implementation of the communication method in the present application;

[0053] Figs. 8 to 10 are schematic diagrams of possible implementations of the first time unit in the present application;

[0054] Figs. 11 to 15 are schematic diagrams of the communication apparatuses provided in the present application. DETAILED DESCRIPTION

[0055] The present application is described below in conjunction with the accompanying drawings in the present application. The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. It is known to those of ordinary skill in the art that, as technology develops and new scenarios appear, the technical solutions provided in the present application are also applicable to similar technical problems.

[0056] First, some terms or terminologies used in the present application are explained and described, which are also part of the invention content.

[0057] (1) The terms "system" and "network" in this application can be used interchangeably. "Multiple" means two or more. "And / or" describes the association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. Unless otherwise specified, the ordinal numbers "first", "second", etc. mentioned in this application are used to distinguish multiple objects, and are not used to limit the order, time sequence, priority, or importance of the multiple objects. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0058] (2) In this application, "sending information" can be understood as a device sending information to another device, or also can be understood as a logical module in a device sending information to another logical module. For example, "terminal device sending information" can be understood as the terminal device sending information to another device (such as a network device), or can be understood as logical module 1 in the terminal device sending information to logical module 2 in the server.

[0059] In this application, "receiving information" can be understood as a device receiving information from another device, or also can be understood as a logical module in a device receiving information from another logical module. For example, "terminal device receiving information" can be understood as the terminal device receiving information from another device (such as a network device), or can be understood as logical module 1 in the terminal device receiving information from logical module 2 in the server.

[0060] In this application, "sending information to" or related illustrations in the drawings can be understood as the destination of the information is the network device. It can include sending information to the network device directly or indirectly. "Receiving information from" or "receiving information from" or "receiving information sent by" or related illustrations in the drawings can be understood as the source of the information is the network device, which can include receiving information from the network device directly or indirectly. The information between the source and the destination of the information sending may be processed as necessary, such as format change, coding, modulation, etc., but the destination can understand the effective information from the source. Similar expressions in this application can be similarly understood, and will not be repeated here.

[0061] (3) Configuration and pre-configuration: In this application, configuration and pre-configuration will be used together. Among them, the configuration refers to the network device or server sending some parameter configuration information or parameter values to the terminal device through messages or signaling, so that the terminal device determines the communication parameters or resource in transmission according to the values or information. The pre-configuration is similar to the configuration, which can be the parameter information or parameter value agreed by the network device / server and the terminal device in advance, or the parameter information or parameter value adopted by the base station / network device or the terminal device according to the standard protocol, or the parameter information or parameter value pre-stored in the base station / server or terminal device. This application does not limit it.

[0062] It should be understood that these values and parameters can be changed or updated.

[0063] (4) In this application, "indication" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. When describing that the indication information is used to indicate A, it can be understood as that the indication information carries A, directly indicates A or indirectly indicates A.

[0064] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship; only a part of the to-be-indicated information can be indicated, and the other part of the to-be-indicated information is known or agreed in advance. For example, the arrangement order of each information agreed in advance (for example, protocol predefined) can be used to indicate a specific information, thereby reducing the indication overhead to a certain extent. The present application does not limit the specific manner of indication. It can be understood that for the sender of the indication information, the indication information can be used to indicate the to-be-indicated information, and for the receiver of the indication information, the indication information can be used to determine the to-be-indicated information.

[0065] It should be understood that in the present application, the same or similar parts between various embodiments can be mutually referred to, unless otherwise specified. In various embodiments of the present application, and various methods / designs / implementation manners in each embodiment, the terms and / or descriptions between different embodiments, and between various methods / designs / implementation manners in each embodiment are consistent and can be mutually referred to, unless otherwise specified and logically conflicted. The technical features in different embodiments, and various methods / designs / implementation manners in each embodiment can be combined to form new embodiments, methods, or implementation manners according to their inherent logical relationship. The implementation manners of the present application described below do not constitute a limitation on the protection scope of the present application.

[0066] Next, possible, non-limiting scenarios related to the present application are introduced.

[0067] Specific absorption rate (SAR) is a physical quantity that measures the rate at which a unit mass of biological tissue absorbs electromagnetic radiation energy, commonly used to evaluate the energy absorption of the human body exposed to radio frequency (RF) electromagnetic fields. The unit of SAR is watt per kilogram (W / kg), which describes the absorption of electromagnetic wave energy by human tissue at a specific frequency, for example, when using mobile phones or wearable wireless devices. The setting of SAR is to protect public health and ensure that people will not be affected by excessive electromagnetic radiation when using wireless communication devices.

[0068] With the popularity of wireless technology, especially the development of mobile communication and wireless networks, people are increasingly exposed to various radio frequency sources. In order to limit potential health risks, international SAR limit standards have been established, such as 2W / kg or 1.6W / kg, etc. These standards ensure that the radiation level of communication devices remains within a safe range under normal use conditions. The measurement of SAR value is usually carried out in a laboratory environment, by simulating a model of human tissue to evaluate the radiation absorption of the device under the most unfavorable conditions. In the SAR test, it is required to be carried out in the scenario where the antenna of the communication device is within 20 centimeters of the human body, to ensure that even in the most extreme case, the radiation of the communication device will not exceed the safety limit.

[0069] With the proliferation of communication devices and the increasing awareness of public health, the requirement for SAR indicators is gradually becoming more stringent worldwide. This not only reflects the growing public concern about the potential health effects of electromagnetic radiation, but also poses higher challenges to the design and manufacture of terminal devices. This trend poses a severe challenge to the industry, especially in terms of the transmit power control of terminal devices. Terminal devices must strive to reduce the radiation level of terminal devices while ensuring communication quality and user experience, to ensure that terminal devices meet the new SAR standards. This requires innovation in hardware design, software algorithms, and material selection, such as optimizing antenna layout, using low radiation materials, and developing intelligent power control technology that can dynamically adjust the transmit power without affecting the performance of voice and data transmission, reducing unnecessary energy output.

[0070] For the scenario of uplink transmission, another important indicator is the transmit power of the terminal device, measured in decibels relative to one milliwatt (dBm). The transmit power directly affects the uplink coverage and transmission quality. According to different terminal device types and frequency band limitations, etc., it can be mainly divided into the following four power classes (PC), which are PC1 (31dBm), PC1.5 (29dBm), PC2 (26dBm) and PC3 (23dBm). The maximum transmit power of the terminal device is P CMAX,f,c . Specifically, the maximum transmit power of the terminal device satisfies the following expression:

[0071] P CMAX_L,f,c ≤P CMAX,f,c ≤P CMAX_H,f,c

[0072] In the above expression, P CMAX_L,f,c is the lower limit of P CMAX,f,c , P CMAX_H,f,c is the upper limit of P CMAX,f,c , P EMAX,c is the maximum transmit power configured by the network device to the terminal device, and P PowerClassΔP PowerBoost ΔMPR is the increment of the maximum power reduction (MPR), A-MPR is the additional maximum power reduction, and P-MPR is the power management maximum power reduction in different situations. However, in actual applications, in a high-power scenario, it is difficult for a power amplifier (PA) to perform power reduction in a relatively linear manner, and it is difficult to meet the RF indicators. The MPR mainly considers different RB allocation areas, different modulation modes, and different waveforms, and the like. FIG. 1 is a schematic diagram of a possible implementation of MPR. As shown in FIG. 1, different scheduled RB starting positions and RB numbers correspond to different MPRs. ΔMPR considers that the excessively large operating bandwidth allows further reduction. Because the radiation index of some sensitive areas is set to be very small, A-MPR allows additional power reduction.

[0073] The power parameters related to SAR mainly include two parameters: P-MPR is the power reduction for meeting the SAR indicators, and the protocol does not limit the value, which can be set by the terminal device. ΔP PowerClass allows the terminal device to reduce the PC in the SAR limited case, for example, from PC2 to PC3. The ΔP PowerClass The parameter is related to the duty cycle capability of the terminal device. The duty cycle indicates the maximum proportion of symbols (hereinafter referred to as uplink symbols) that can be used for uplink transmission in a period under the condition of meeting the SAR indicators specified by the regulatory agency.

[0074] Next, two limiting modes of the power of the terminal device are introduced.

[0075] The first limiting mode: the terminal device can report the duty cycle to the network device, so that the power of the terminal device for sending uplink signals meets the requirements of the SAR indicators. When the terminal device is in the SAR limited state period, the network device schedules uplink symbols for the terminal device based on the duty cycle, and the maximum proportion indicated in the duty cycle is the upper limit of the proportion of the uplink symbols in the period.

[0076] For example, assume that the terminal device reports a duty cycle maxUplinkDutyCycle-PC2-FR1 = n40 to the network device, where maxUplinkDutyCycle-PC2-FR1 is a signal for carrying a duty cycle, and n40 indicates that the value of the duty cycle is 74%. After the network device determines that the duty cycle is 70%, the network device will not schedule more than 40% of the uplink symbols for the terminal device during the period when the terminal device is in the SAR limited state. Referring to FIG. 2, FIG. 2 is a schematic diagram of a manner of limiting the power of the terminal device. As shown in FIG. 2, when the terminal device is not in the SAR limited state (for example, the scenario on the left side of FIG. 2), the terminal device transmits the uplink signal at the power level of PC2; when the terminal device is in the SAR limited state (for example, the scenario on the right side of FIG. 2), the terminal device stops transmitting the uplink signal, that is, the power of the terminal device is 0.

[0077] The uplink signal transmitted by the terminal device needs to be carried in the uplink symbol. However, in the first limiting manner, when the terminal device is in the SAR limited state period, the network device needs to reduce the number of uplink symbols in order to meet the requirement of the duty cycle, which leads to a reduction in the transmission efficiency of the uplink signal.

[0078] On the other hand, in the first limiting manner, assume that the terminal device reports maxUplinkDutyCycle-PC2-FR1 = n70, then the network device will not schedule more than 70% of the uplink symbols for the terminal device during the period. At present, the network device and the terminal device do not have a unified limitation on the length of the period of the above-mentioned duty cycle. For example, the duty cycle reported by the terminal device refers to a duty cycle with a period of 1 minute. However, the network device schedules the uplink symbols for the terminal device based on a duty cycle with a period of 2 minutes. Therefore, the limiting effect of the power of the terminal device does not match the expectation of the terminal device, and it is difficult to meet the SAR index.

[0079] The second limiting manner: Since the SAR index is an average measurement index in a period, the terminal device can transmit the uplink signal at a high power in a period of time and transmit the uplink signal at a low power in other time, so that the terminal device meets the SAR index in the period. For example, the terminal device perceives whether a human body is within a certain distance through a sensor, and when the terminal device detects that the human body is close, the terminal device enters the SAR limited state. Referring to FIG. 3, FIG. 3 is a schematic diagram of another manner of limiting the power of the terminal device. As shown in FIG. 3, in the SAR limited state, when there is uplink data to be transmitted, the terminal device transmits the uplink signal at a high power for a period of time (for example, the scenario on the left side of FIG. 3); and when there is no uplink data to be transmitted, the terminal device performs power backoff, that is, the terminal device transmits the uplink signal at a low power (for example, the scenario on the right side of FIG. 3).

[0080] However, the network device does not perceive the selection of the terminal device between high power and low power for transmitting the uplink signal. This results in that the network device is not clear about the time period in which the terminal device transmits the uplink signal with high power and the time period in which the terminal device transmits the uplink signal with low power, and thus, the scheduling of the network device can be inaccurate. For example, in the time period in which the terminal device transmits the uplink signal with high power, the network device still schedules a lower modulation and coding scheme (MCS), and in the time period in which the terminal device transmits the uplink signal with low power, the network device still schedules a higher MCS. Thus, the transmission efficiency of the uplink signal is reduced.

[0081] To solve the above problem, the present application provides a communication method and related apparatus for improving the transmission efficiency of the uplink signal. The communication method and related apparatus provided by the present application can be applied to various communication systems. For example, the fifth generation (5th generation, 5G) mobile communication system, the new radio (new radio, NR) system, the long term evolution (long term evolution, LTE) system, the LTE frequency division duplex (frequency division duplex, FDD) system, the LTE time division duplex (time division duplex, TDD), the future communication system, the vehicle to everything (vehicle to everything, V2X) communication system, the device to device (device to device, D2D) communication system, the Internet of Things communication system, the industrial Internet communication system, or the satellite communication system, etc. The wireless communication system involved in the present application also includes but is not limited to: narrow band Internet of Things (narrow band-internet of things, NB-IoT).

[0082] For example, refer to FIG. 4, which is a schematic diagram of a possible, non-limiting system to which the communication method and related apparatuses in the present application can be applied. As shown in FIG. 4, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, the communication system 10 can also include an Internet 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 4, collectively referred to as 110) and at least one terminal device (e.g., 120a-120j in FIG. 4, collectively referred to as 120). The RAN 100 can also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 4), etc. The terminal devices 120 are connected to the RAN nodes 110 in a wireless manner. The RAN nodes 110 are connected to the core network 200 in a wireless or wired manner. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be different physical devices respectively, or can be the same physical device integrated with the logical functions of the core network and the logical functions of the radio access network. The terminal devices and the terminal devices, and the RAN nodes and the RAN nodes can be connected to each other in a wired or wireless manner.

[0083] The RAN 100 can be a 3rd generation partnership project (3GPP) related cellular system, e.g., a fourth-generation (4G) mobile communication system, a 5th generation (5G) mobile communication system, or a future communication system. The RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), an evolved universal terrestrial radio access (E-UTRA) system, or a wireless fidelity (WiFi) system. The RAN 100 can also be a communication system in which two or more of the above systems are fused.

[0084] The RAN node 110, which can also be referred to as a network device, an access network device, a RAN device, a RAN entity, or an access node, etc., forms part of the communication system, and can be configured to facilitate the wireless access by terminal devices. The RAN nodes 110 in the communication system 10 can be the same type of nodes or different types of nodes. In some scenarios, the roles of a RAN node 110 and a terminal device 120 are relative, e.g., the network element 120i in Figure 4 can be a helicopter or a drone, which can be configured to move as a mobile base station, for a terminal device 120j accessing the RAN 100 via the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal device. Both the RAN node 110 and the terminal device 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 4 can be understood as communication apparatuses with base station functionalities, and the network elements 120a-120j can be understood as communication apparatuses with terminal device functionalities.

[0085] In a possible scenario, the RAN node 110 can be a base station, an evolved Node B (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation Node B (gNB), a base station in a future mobile communication system, or an access node in a WiFi system, etc. Optionally, the RAN node 110 can also be a macro base station (e.g., 110a in Figure 4), a micro base station or an indoor station (e.g., 110b in Figure 4), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node 110 can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU). All or part of the functions of the RAN node 110 in the present application can also be implemented by a software function running on hardware, or by a virtualized function instantiated on a platform (e.g., a cloud platform). The RAN node 110 can also be provided with a communication module, circuit or chip for performing the corresponding communication function, and program instructions for performing the corresponding communication function. The RAN node 110 in the present application can also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node 110.

[0086] In another possible scenario, a terminal device is assisted by multiple RAN nodes to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, included in a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0087] Terminal device, which can access the above-mentioned communication system and has corresponding communication function device or module. Terminal device can also be called terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), fixed wireless access (FWA) or customer premise equipment (CPE), etc. Terminal device is a device including wireless communication function (providing voice / data connectivity to users). For example, handheld devices with wireless connection function, vehicle-mounted devices, machine type communication (MTC) terminals, etc. At present, terminal device can include mobile phone, tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self driving (such as unmanned aerial vehicle, vehicle), wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, etc. For example, wireless terminal in self driving can be unmanned aerial vehicle, helicopter or airplane, etc. For example, wireless terminal in Internet of vehicles can be vehicle-mounted device, whole vehicle device, vehicle-mounted module, vehicle or ship, etc. Wireless terminal in industrial control can be camera, robot or mechanical arm, etc. Wireless terminal in smart home can be television, air conditioner, sweeping machine, sound box or set top box, etc. Communication module, circuit or chip for executing corresponding communication function is usually arranged in terminal device, and program instruction for executing corresponding communication function is also configured in terminal device.

[0088] Fig. 5 is another possible and non-limiting system diagram to which the communication method and the communication apparatus in the present application can be applied. As shown in Fig. 5, the communication method and the communication apparatus in the present application can be applied to an example diagram of an O-RAN system, which includes a core network, an access network device and a UE. Optionally, the O-RAN system can also include other components in addition to the components shown in Fig. 5, which are not limited in the present application.

[0089] The access network device can communicate with a core network (CN) through a backhaul. The access network device can communicate with a UE through an air interface. Specifically, a BBU in the access network device communicates with the core network through the backhaul. An RU in the access network device communicates with at least one UE through the air interface. The BBU communicates with at least one RU through a fronthaul, and the BBU and the RU can be co-located or not.

[0090] The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul.

[0091] Referring to FIG. 6, FIG. 6 is a diagram of a network element function division and a protocol layer structure of an O-RAN device. As shown in FIG. 6, the CU is a logical node that carries the radio resource control (RRC), the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, and other control functions of the access network device. The CU can be connected to network nodes such as the core network through some interfaces. For example, the E2 interface. Optionally, the CU can have part of the functions of the core network. The CU (for example, the PDCP layer and / or higher layers of the CU) is connected to the DU (for example, the radio link control (RLC) layer and lower layers of the DU) through some interfaces. For example, the F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (for example, interface management, system information management, UE context management, RRC message transmission, etc.). The F1AP is an application protocol of the F1 interface, which defines the signaling procedures of the F1 in some examples. The F1 interface supports the control plane F1-C and the user plane F1-U.

[0092] Optionally, as shown in FIG. 6, a CU can be split into a CU-CP and a CU-UP, where the CU-CP is a logical node carrying the control plane part of PDCP (PDCP-C) layer of RRC layer and packet data convergence protocol layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an access and mobility management (AMF) in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location update of a terminal device, registration network of the terminal device, handover of the terminal device, and the like. The CU-UP is a logical node carrying the user plane part of PDCP (PDCP-U) layer of SDAP layer and packet data convergence protocol layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a user plane function (UPF) in a 5G system, is used to be responsible for forwarding and receiving data in a terminal device. The above configuration of the CU and the DU is only an example, and in actual application, the CU and the DU can also be configured to have functions according to needs. For example, the CU or the DU can be configured to have more functions of protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, partial functions of the RLC layer and functions of protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to a service type or other system requirements, for example, functions that need to meet a relatively short delay requirement in processing time are arranged in the DU, and functions that do not need to meet the delay requirement are arranged in the CU.

[0093] In a possible implementation manner, as shown in FIG. 6, the DU is a logical node carrying an RLC layer, a medium access control (MAC) layer, a higher physical (Higher PHY) layer, and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like.

[0094] In one possible implementation, as shown in FIG. 6, the RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Low-PHY includes portions of PHY processing such as fast fourier transform (FFT), inverse fast fourier transformation (IFFT), digital beamforming and filtering, etc. processing functions. The RU communicates with one or more UEs over a wireless link.

[0095] The DU and the RU can or can not be co-located. The DU and the RU exchange control plane information and user plane information over a front-haul link via a lower-layer split-control, user and synchronization (Lower-Layer Split CUS-Plane, LLS-CUS) interface. The LLS-CUS can include a lower-layer split control (LLS-C) interface and a lower-layer split user (LLS-U) interface that provide control plane (C-Plane) and user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and the RU. The DU and the RU have a lower-layer split management (LLS-M) interface of the front-haul link to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0096] The DU and the RU can cooperate to collectively implement the functionality of the PHY layer. One DU can be connected to one or more RUs. The functionalities that the DU and the RU have can be configured in multiple ways according to design. For example, the DU is configured to implement baseband functionality, and the RU is configured to implement mid- RF functionality. As another example, the DU is configured to implement high-layer functionality in the PHY layer, and the RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in the PHY layer can include a portion of the functionality of the PHY layer that is closer to the MAC layer, and the low-layer functionality in the PHY layer can include another portion of the functionality of the PHY layer that is closer to the mid-RF side.

[0097] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the 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.

[0098] In this application, the RAN node shown in FIG. 4 to FIG. 6 can be replaced by other terms, such as "network device". For the convenience of description, in this application, "network device" is used for description hereinafter unless otherwise specified. It should be understood that the technical solutions provided in this application are also applicable to other different expressions or different types of "network devices".

[0099] The communication method and related apparatus in this application will be further introduced below in combination with the drawings.

[0100] Please refer to FIG. 7, which is a possible implementation schematic diagram of the communication method in this application. It should be understood that the terminal device and the network device are taken as examples of the execution subject of the interaction schematic to illustrate the method, but the application does not limit the execution subject of the interaction schematic. For example, the method performed by the terminal device in FIG. 7 can also be implemented by a chip, a baseband chip, a modem chip, a system on chip (SoC) chip containing a modem core, a system in package (SIP) chip, a communication module, a chip system, a processor, a logic module or software in the terminal device. In this application, when referring to the terminal device, it can refer to the terminal device itself, or a chip, a communication module, an integrated circuit, a processor, a logic module or software used for implementing the communication method provided in this application in the terminal device, and the specific implementation is not limited in this application. Similarly, the method performed by the network device in FIG. 7 can also be implemented by a chip, a baseband chip, a modem chip, a SoC chip containing a modem core, a SIP chip, a communication module, a chip system, a processor, a logic module or software in the network device. In this application, when referring to the network device, it can refer to the network device itself, or a chip, a communication module, an integrated circuit, a processor, a logic module or software used for implementing the communication method provided in this application in the network device, and the specific implementation is not limited in this application.

[0101] As shown in FIG. 7, the communication method of the present application includes but is not limited to steps 401 to 403.

[0102] 401. The terminal device sends first information to the network device.

[0103] The terminal device sends first information to the network device, and correspondingly, the network device receives the first information from the terminal device, the first information being used to indicate the highest proportion of the first time unit in the first time length. The uplink signal carried in the first time unit is sent at a first power level, the first time length further includes a second time unit, the uplink signal carried in the second time unit is sent at a second power level, and the first time unit and the second time unit are non-overlapping time units.

[0104] In the present application, the first time length includes the first time unit and the second time unit, or in other words, the first time length includes a plurality of time units, and the plurality of time units can be divided into two different types of the first time unit and the second time unit. Regarding "the uplink signal carried in the first time unit is sent at a first power level", it can be understood as "the first time unit is a time unit in the first time length for carrying the uplink signal sent at the first power level". Regarding "the uplink signal carried in the second time unit is sent at a second power level", it can be understood as "the second time unit is a time unit in the first time length for carrying the uplink signal sent at the second power level".

[0105] The "highest proportion of the first time unit in the first time length" can be understood as "the highest proportion of the number of the first time units in the number of the plurality of time units", or also can be understood as "the highest proportion of the cumulative time length of the time units belonging to the first time unit type in the first time length". For example, assuming that the first time length includes 10 time units, and the first information is used to indicate that the highest proportion of the first time unit in the first time length is 40%, in this example, it can be understood that up to 4 first time units can be included in the above-mentioned 10 time units, or also can be understood that up to 4 time units belonging to the first time unit type can be included in the above-mentioned 10 time units. It should be understood that the "40%" is only an example description and does not constitute a limitation on the present application. For other implementations, the present application is still applicable. In actual application, the highest proportion can also be other values, such as 0%, 10%, 20%, 25%, 30%, 50%, 58% or 100%, etc. Optionally, in the present application, the value of the highest proportion indicated by the first information can be determined by the terminal device based on the applicable electromagnetic energy absorption requirements provided by the regulatory agency. It can be understood that when the value of the highest proportion indicated by the first information is within a certain range, the terminal device can meet the SAR index by complying with the applicable electromagnetic energy absorption requirements provided by the regulatory agency.

[0106] Optionally, the time unit can be an hour, a minute, a second, a millisecond, a microsecond, a nanosecond, a frame, a subframe, a slot, a symbol, a sampling time (Ts) or a basic time unit (Tc), etc.

[0107] Optionally, the highest proportion can be replaced by other descriptions, such as the maximum proportion, the upper limit of the proportion, the highest upper limit of the proportion, the highest threshold of the proportion or the highest threshold of the proportion, etc.

[0108] In this application, the first power level can be a non-zero power value (such as 28 milliwatts decibel (dBm)), or it can also be a set of multiple non-zero power values (such as a set of (25 dBm, 28 dBm, 30 dBm)), or it can also be a power range (such as 23 dBm-30 dBm), or it can also be a set of multiple power ranges (such as a set of (21 dBm-23 dBm, 25 dBm-27 dBm, 29 dBm-30 dBm)). The power value or power range of the second power level is different from or not completely the same as the first power level. The description of the second power level is similar to the description of the first power level described above. For details, please refer to the introduction of the first power level. This will not be repeated here. Optionally, the power value of the first power level is greater than the power value of the second level.

[0109] In one possible implementation, the terminal device sends second information to the network device, and correspondingly, the network device receives the second information from the terminal device. The second information is used to indicate the power difference between the first power level and the second power level. Therefore, the network device can schedule the first time unit and / or the second time unit for the terminal device based on the modulation and coding scheme (MCS) and / or frequency domain resource that is more matched to the power difference between the first power level and the second power level, thereby improving the transmission efficiency of the uplink signal.

[0110] This application does not limit the sending order or sending time of the first information and the second information. Optionally, the terminal device can first send the first information to the network device, and then send the second information to the network device; or the terminal device can first send the second information to the network device, and then send the first information to the network device; or the terminal device can send the first information and the second information to the network device at the same time, for example, the first information and the second information are carried in the same uplink signal.

[0111] In the present application, the time length of the first time length can be preconfigured by the network device, or can be preconfigured by the terminal device, or can be determined after negotiation between the network device and the terminal device, or the network device and the terminal device can not need to configure or negotiate the length of the first time length.

[0112] In a possible implementation, the terminal device sends third information to the network device, and correspondingly, the network device receives the third information from the terminal device. The third information is used to indicate the first time length. Thus, the network device and the terminal device reach an agreement on the time length of the first time length. The network device can make the first time unit and / or the second time unit scheduled for the terminal device more match the needs of the terminal device and meet the SAR index.

[0113] Optionally, the third information can be replaced by other descriptions, for example, the third information is used to indicate the time length of the first time length, or the third information is used to indicate the number of time units in the first time length.

[0114] The present application does not limit the sending order or sending time of the first information, the second information and the third information. Optionally, the terminal device can send the first information and the second information to the network device first, and then send the third information to the network device; or the terminal device can send the third information to the network device first, and then send the first information and the second information to the network device; or the terminal device can send the first information, the second information and the third information to the network device at the same time, for example, the first information, the second information and the third information are carried in the same uplink signal.

[0115] For example, the following is a possible schematic in which the first information, the second information and the third information are carried in the same uplink signal.

[0116] The HighpowerUplinkDutyCycle field is a field in the uplink signal carrying the first information, the second information, and the third information. The uplinkDutyCycle field is a field carrying the first information. For example, the maximum duty cycle indicated by the first information can be any one of n10 (10%), n20 (20%), n30 (30%), n40 (40%), or n50 (50%) as shown above. The PowerFactorChange field is a field carrying the second information. For example, the power difference between the first power level and the second power level indicated by the second information can be any one of dB3, dB6, dB9, or dB12. The Period field is a field carrying the third information. For example, the first time length indicated by the third information can be any one of 30 seconds (30s), 60 seconds (60s), or 6 minutes (6m). It should be understood that the above examples are illustrative and do not limit the present application. The present application is applicable to other implementations.

[0117] It should be understood that the first time unit and the second time unit in the first time length, and the first power level and the second power level are only illustrative in the present application. Alternatively, the first information can also indicate the maximum duty cycle of the second power level, the third power level, and / or the fourth power level (or other power levels) in the first time length, wherein the signal transmitted at the third power level is carried in the third time unit, and the signal transmitted at the fourth power level is carried in the fourth time unit.

[0118] Alternatively, the first information, the second information, and / or the third information can be carried in a medium access control control element (MAC CE), uplink control information (UCI), radio resource control (RRC) signaling, or UE assistance information (UAI).

[0119] 402. The network device schedules the first time unit and the second time unit for the terminal device based on the first information.

[0120] After receiving the first information, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. In the present application, after the network device schedules the first time unit and the second time unit for the terminal device, the duty cycle of the first time unit in the first time length should be less than or equal to the maximum duty cycle indicated by the first information, or in other words, meet the limit of the maximum duty cycle indicated by the first information.

[0121] Optionally, the network device can also schedule the first time unit and the second time unit for the terminal device based on one or more of the first information, the second information, or the third information.

[0122] Please refer to FIG. 8, which is a possible implementation of the first time unit in the present application. In the scenario shown in FIG. 8, it is assumed that the first time duration includes 5 uplink slots, the highest proportion indicated by the first information is 20%, and the power value of the first power level is higher than that of the second power level. Therefore, at most only one uplink slot (equivalent to the first time unit) in the 5 uplink slots can be used to carry the uplink signal of the first power level.

[0123] Optionally, since the first time unit and the second time unit are respectively used to carry the uplink signals of the first power level and the second power level, the network device schedules the first time unit for the terminal device using the MCS and / or frequency domain resource matched with the first power level, and schedules the second time unit for the terminal device using the MCS and / or frequency domain resource matched with the second power level, thereby improving the efficiency of uplink transmission.

[0124] Optionally, the present application does not limit the position or order of the first time unit in the first time duration. Please refer to FIG. 9, which is another possible implementation of the first time unit in the present application. As shown in FIG. 9, it is assumed that the first time duration includes 5 uplink slots, the highest proportion indicated by the first information is 20%, and the power value of the first power level is higher than that of the second power level. Therefore, the first time unit can be the first uplink slot in the 5 uplink slots, or it can also be the second uplink slot in the 5 uplink slots, or it can also be the third uplink slot in the 5 uplink slots.

[0125] In a possible implementation, after receiving the first information, the network device can directly schedule the first time unit and the second time unit for the terminal device based on the first information; or, after receiving the first information, the terminal device sends the fourth information to the network device, and the fourth information is used to activate the first information. When the first information is activated, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. Therefore, the terminal device can select the activation time of the first information, thereby improving the efficiency of the network device in scheduling the first time unit and the second time unit.

[0126] Optionally, the terminal device can first send the first information to the network device, and then send the fourth information to the network device; or, the terminal device can also send the first information and the fourth information to the network device at the same time, for example, the first information and the fourth information are carried in the same uplink signal. That is, the first information is activated at the same time when it is received.

[0127] In a possible implementation, the fourth information is used to indicate a second duration that the terminal device is in the SAR limited state. Specifically, when the terminal device is in the SAR limited state, the fourth information is sent to the network device, so as to notify the network device of the second duration that the terminal device is in the SAR limited state. After receiving the fourth information, the network device activates the first information, and within the second duration indicated by the fourth information, the network device schedules the first time unit and the second time unit for the terminal device based on the first information. Thus, the terminal device requests the network device to schedule the first time unit and the second time unit based on the first information during the SAR limited state, which improves the efficiency of the network device in scheduling the first time unit and the second time unit.

[0128] In the description of the fourth information used to indicate the second duration that the terminal device is in the SAR limited state, it can be understood that the fourth information is used to indicate that the terminal device is in the SAR limited state and the second duration that the terminal device is in the SAR limited state, or it can also be understood that the fourth information is used to indicate that the terminal device will be in the SAR limited state within the second duration.

[0129] For example, the first information, the second information, the third information and the fourth information are carried in a possible uplink signal as follows.

[0130] In the description of the HighpowerUplinkDutyCycle field, the uplinkDutyCycle field, the PowerFactorChange field and the Period field, refer to the related description in step 401, which will not be repeated here. The updateperiod field is a field used to carry the fourth information, and the fourth information is used to indicate the second duration that the terminal device is in the SAR limited state. For example, the second duration indicated by the fourth information can be any one of 2 seconds (s2), 4 seconds (s4), 10 seconds (s10) and 20 seconds (s20) as shown above.

[0131] Optionally, when the terminal device is in the SAR limited state, the terminal device sends the fourth information to the network device, and the fourth information indicates the second duration that the terminal device is in the SAR limited state this time.

[0132] In a possible implementation, the fourth information is used to indicate that the terminal device is in the SAR limited state. After receiving the fourth information, the network device can determine that the terminal device is in the SAR limited state. Then the first information is activated, and the network device schedules the first time unit and the second time unit for the terminal device based on the first information.

[0133] In a possible implementation, the terminal device sends fifth information to the network device, and correspondingly, the network device receives the fifth information from the terminal device. The fifth information is used to deactivate the first information. After the network device receives the fifth information, the first information is deactivated, and the network device no longer schedules the first time unit and the second time unit for the terminal device based on the first information. Therefore, the power of the terminal device for sending the uplink signal does not need to be limited by the scheduling distribution of the first time unit and the second time unit, and the transmission efficiency of the uplink signal is improved.

[0134] In a possible implementation, the fifth information is used to indicate that the terminal device is in a non-SAR limited state; or it can be understood that the fifth information is used to indicate that the terminal device has exited the SAR limited state, or it can also be understood that the fifth information is used to indicate that the terminal device is not in the SAR limited state.

[0135] Optionally, the fourth information can be carried in a MAC CE, UCI, RRC signaling, UAI, or a power headroom report (PHR).

[0136] Optionally, the fifth information can be carried in a MAC CE, UCI, RRC signaling, UAI, or a PHR.

[0137] For example, the fourth information and the fifth information are carried in UAI. When the terminal device is in the SAR limited state, the terminal device sends UAI to the network device, and the value of the sartrigger field in the UAI is “true”, that is, the fourth information is the sartrigger field with the value “true” in the UAI. When the terminal device is in the non-SAR limited state, the terminal device sends UAI to the network device, and the value of the sartrigger field in the UAI is “false”, that is, the fifth information is the sartrigger field with the value “false” in the UAI.

[0138] For example, the fourth information and the fifth information are carried in the PHR. Please refer to FIG. 10, which is a schematic diagram of the structure of the PHR. As shown in FIG. 10, the terminal device can indicate the fourth information or the fifth information through a certain field (for example, the R field in the figure) in the PHR. Specifically, a 1-bit (bit) can be introduced in the PHR to indicate whether the terminal device is in the SAR limited state. It is assumed that the value of the R field is 1, which indicates that the terminal device is in the SAR limited state, and the value of the R field is 0, which indicates that the terminal device is in the non-limited state. Then, when the terminal device is in the SAR limited state, the terminal device sends the PHR to the network device, and the value of the R field in the PHR is 1, that is, the fourth information is the R field with the value of 1 in the PHR; when the terminal device is in the non-SAR limited state, the terminal device sends the PHR to the network device, and the value of the R field in the PHR is 0, that is, the fifth information is the R field with the value of 0 in the PHR.

[0139] Alternatively, in the PHR, the value of the R field can be 0 to indicate that the terminal device is in the SAR limited state, and the value of the R field can be 1 to indicate that the terminal device is in the non-limited state.

[0140] 403. The terminal device sends the uplink signal based on the first information.

[0141] The terminal device sends the uplink signal based on the first information. Specifically, if the terminal device can select to send the uplink signal at the first power level or at the second power level, the uplink signal sent at the first power level is carried in the first time unit, and the uplink signal sent at the second power level is carried in the second time unit.

[0142] In this application, the terminal device can send uplink signals of different power levels in different time units (for example, the first time unit and the second time unit) based on the first information. In this way, the number of time units available for carrying uplink signals is not reduced, so that the terminal device can maintain the transmission of uplink signals within the first time period, thereby improving the transmission efficiency of uplink signals.

[0143] Correspondingly, the application also provides a related device for implementing the above-mentioned scheme. Please refer to FIG. 11, which is a schematic diagram of the structure of a communication device 500 provided by an embodiment of the application. The communication device 500 can realize the functions of the terminal device or the network device in the above-mentioned method embodiments, and thus can also realize the beneficial effects possessed by the above-mentioned method embodiments. In the embodiments of the application, the communication device 500 can be a terminal device or a network device, or an integrated circuit or an element inside the terminal device or the network device, such as a chip, a baseband chip, a modem chip, a SoC chip containing a modem core, a system in package (SIP) chip, a communication module, a chip system, a processor, etc.

[0144] As shown in FIG. 11, the communication apparatus 500 includes a transceiver unit 501 and a processing unit 502. Optionally, the transceiver unit 501 can include a transmitting unit and a receiving unit, which are respectively used for performing transmitting and receiving.

[0145] In a possible implementation, when the communication apparatus 500 is configured to perform the method performed by the terminal device in the embodiment corresponding to FIG. 7, the communication apparatus 500 includes a transceiver unit 501 and a processing unit 502; the transceiver unit 501 is configured to send first information, the first information being used to indicate a highest proportion of a first time unit in a first time length, wherein an uplink signal carried in the first time unit is sent at a first power level, the first time length further includes a second time unit, an uplink signal carried in the second time unit is sent at a second power level, and the first time unit and the second time unit are non-overlapping time units; and the processing unit 502 is configured to send an uplink signal based on the first information.

[0146] In a possible implementation, when the communication apparatus 500 is configured to perform the method performed by the network device in the embodiment corresponding to FIG. 7, the communication apparatus 500 includes a transceiver unit 501 and a processing unit 502; the transceiver unit 501 is configured to receive first information, the first information being used to indicate a highest proportion of a first time unit in a first time length, wherein an uplink signal carried in the first time unit is sent at a first power level, the first time length further includes a second time unit, an uplink signal carried in the second time unit is sent at a second power level, and the first time unit and the second time unit are non-overlapping time units; and the processing unit 502 is configured to schedule the first time unit and the second time unit for a terminal device based on the first information.

[0147] It should be noted that the information interaction and execution process between the modules / units in the communication apparatus 500 are based on the same concept as the method embodiment corresponding to FIG. 7, and the specific content can be referred to the description of the method embodiment in the foregoing method embodiment of the present application, which will not be repeated here.

[0148] Please refer to FIG. 12, which is another schematic structural diagram of a communication apparatus 600 provided by the present application. The communication apparatus 600 includes a logic circuit 601 and an input / output interface 602. The communication apparatus 600 can be a chip or an integrated circuit.

[0149] The transceiver unit 501 shown in FIG. 11 can be a communication interface, which can be the input / output interface 602 in FIG. 12. The input / output interface 602 can include an input interface and an output interface. Alternatively, the communication interface can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0150] In a possible implementation, when the apparatus 600 is configured to perform the method performed by the terminal device in FIG. 12 and related embodiments, the input and output interface 602 is configured to send the first information, and the logic circuit 601 is configured to send the uplink signal based on the first information.

[0151] In a possible implementation, when the apparatus 600 is configured to perform the method performed by the network device in FIG. 12 and related embodiments, the input and output interface 602 is configured to receive the first information, and the logic circuit 601 is configured to schedule the first time unit and the second time unit for the terminal device based on the first information.

[0152] The logic circuit 601 and the input and output interface 602 can also perform other steps and achieve corresponding beneficial effects performed by the first communication apparatus or the second communication apparatus in any embodiment, which will not be described here.

[0153] In a possible implementation, the processing unit 502 shown in FIG. 11 can be the logic circuit 601 in FIG. 12.

[0154] Optionally, the logic circuit 601 can be a processing apparatus, and the functions of the processing apparatus can be partially or entirely implemented through software.

[0155] Optionally, the processing apparatus can include a memory and a processor, where the memory is configured to store a computer program, and the processor is configured to read and execute the computer program stored in the memory to perform the corresponding processing and / or steps in any one of the method embodiments.

[0156] Optionally, the processing apparatus can include only the processor. The memory for storing the computer program is located outside the processing apparatus, and the processor is connected with the memory through a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor can be integrated together or can be physically independent of each other.

[0157] Optionally, the processing device can be one or more chips, or one or more integrated circuits. For example, the processing device can be one or more field-programmable gate arrays (FPGA), application specific integrated circuits (ASIC), system on chips (SoC), central processing units (CPU), network processors (NP), digital signal processors (DSP), micro controller units (MCU), programmable logic devices (PLD) or other integrated chips, or any combination of the above chips or processors, etc.

[0158] Referring to FIG. 13, a communication device 700 involved in the above embodiments provided by the embodiments of the present application is shown, which can be the communication device as the terminal device in the above embodiments.

[0159] Optionally, the communication device 700 can include but is not limited to at least one processor 701 and a communication port 702.

[0160] Optionally, the transceiver unit 501 shown in FIG. 11 can be a communication interface, which can be the communication port 702 in FIG. 13, and the communication port 702 can include an input interface and an output interface. Alternatively, the communication port 702 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0161] Further optionally, the device can further include at least one of a memory 703 and a bus 704, and in the embodiments of the present application, the at least one processor 701 is configured to control and process the actions of the communication device 700.

[0162] Further, the processor 701 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, transistor logic, hardware components, or any combination thereof. It can implement or execute various example logical blocks, modules, and circuits described in connection with the disclosure. The processor can also be a combination of computing functionality, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, or the like. For the sake of brevity and conciseness, the specific processes performed by the system, apparatus, and units described above can be referred to the corresponding processes in the method embodiments described above, and will not be described herein again.

[0163] It should be noted that the communication apparatus 700 shown in FIG. 13 can be specifically used to implement the steps implemented by the terminal device in the foregoing method embodiments, and achieve the corresponding technical effects of the terminal device. The specific implementation of the communication apparatus shown in FIG. 13 can be referred to the description in the foregoing method embodiments, and will not be described herein again.

[0164] Referring to FIG. 14, FIG. 14 is a structural schematic diagram of a communication apparatus 800 provided by an embodiment of the present application, which can be the communication apparatus as the network device in the foregoing embodiments.

[0165] The communication apparatus 800 includes at least one processor 811 and at least one network interface 814. Further optionally, the communication apparatus further includes at least one memory 812, at least one transceiver 813, and one or more antennas 814. The processor 811, the memory 812, the transceiver 813, and the network interface 814 are connected, for example, through a bus. In the embodiments of the present application, the connection can include various interfaces, transmission lines, or buses, etc., and the embodiments of the present application do not limit the same. The antenna 815 is connected to the transceiver 813. The network interface 814 is configured to enable the communication apparatus to communicate with other communication devices through a communication link. For example, the network interface 814 can include a network interface between the communication apparatus and a core network device, such as an S1 interface. The network interface can include a network interface between the communication apparatus and other communication apparatuses (such as other network devices or core network devices), such as an X2 or Xn interface.

[0166] The transceiver unit 501 shown in FIG. 11 can be a communication interface, which can be the network interface 814 in FIG. 14. The network interface 814 can include an input interface and an output interface. Alternatively, the network interface 814 can be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0167] The processor 811 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs, processing data of the software programs, for example, for supporting the communication device to perform the actions described in the embodiments. The communication device can include a baseband processor mainly used for processing communication protocols and communication data, and a central processor mainly used for controlling the whole terminal device, executing software programs, and processing data of the software programs. The processor 811 in FIG. 14 can integrate the functions of the baseband processor and the central processor, and those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected by a bus or the like. Those skilled in the art can understand that the terminal device can include multiple baseband processors to adapt to different network modes, and the terminal device can include multiple central processors to enhance the processing capability, and various components of the terminal device can be connected by various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built in the processor, or stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

[0168] The memory is mainly used for storing software programs and data. The memory 812 can exist independently and be connected with the processor 811. Alternatively, the memory 812 can be integrated with the processor 811, for example, integrated in a chip. The memory 812 can store program codes for executing the technical solutions of the embodiments of the present application, and the processor 811 controls the execution. Various computer programs executed can also be regarded as a driver of the processor 811.

[0169] FIG. 14 only shows one memory and one processor. In actual terminal devices, multiple processors and multiple memories can exist. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, and the embodiments of the present application do not limit this.

[0170] The transceiver 813 can be configured to support the receiving or transmitting of radio frequency signals between the communication device and a terminal. The transceiver 813 can be connected to the antenna 815. The transceiver 813 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 815 can receive radio frequency signals, the receiver Rx of the transceiver 813 is configured to receive the radio frequency signals from the antenna and convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 811 for further processing, such as demodulation processing and decoding processing, by the processor 811. In addition, the transmitter Tx in the transceiver 813 is also configured to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 811, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through the one or more antennas 815. Specifically, the receiver Rx can selectively perform one or more levels of down-mixing processing and analog-to-digital conversion processing on the radio frequency signals to obtain the digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing processing and the analog-to-digital conversion processing can be adjustable. The transmitter Tx can selectively perform one or more levels of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signals or digital intermediate frequency signals to obtain the radio frequency signals, and the order of the up-mixing processing and the digital-to-analog conversion processing can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0171] The transceiver 813 can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. Optionally, the devices in the transceiving unit for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit for implementing the transmitting function can be regarded as a transmitting unit, i.e., the transceiving unit includes the receiving unit and the transmitting unit, the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0172] It should be noted that the communication device 800 shown in FIG. 14 can be specifically configured to implement the steps implemented by the network device in the foregoing method embodiments, and achieve the corresponding technical effects of the network device. The specific implementation mode of the communication device 800 shown in FIG. 14 can be referred to the description in the foregoing method embodiments, which will not be described here one by one.

[0173] Please refer to FIG. 15, which is a structural schematic diagram of a communication device involved in the above embodiments provided by the embodiments of the present application.

[0174] It can be understood that the communication apparatus 900 includes, for example, modules, units, elements, circuits, or interfaces, and the like, which are appropriately configured together to perform the technical solutions provided in the present application. The communication apparatus 900 can be a terminal device or a network device described above, or can be a component (for example, a chip) of the devices, to implement the methods described in the following method embodiments. The communication apparatus 900 includes one or more processors 901. The processor 901 can be a general processor or a special-purpose processor, and the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication apparatus (such as a RAN node, a terminal, or a chip, and the like), execute software programs, and process data of the software programs.

[0175] Optionally, in one design, the processor 901 can include a program 903 (which can also be referred to as code or instructions at times) that can be run on the processor 901, so that the communication apparatus 900 performs the methods described in the following embodiments. In yet another possible design, the communication apparatus 900 includes a circuit (not shown in FIG. 15).

[0176] Optionally, the communication apparatus 900 can include one or more memories 902 having a program 904 (which can also be referred to as code or instructions at times) stored thereon, which can be run on the processor 901, so that the communication apparatus 900 performs the methods described in the above method embodiments.

[0177] Optionally, the processor 901 and / or the memory 902 can include an AI module 907, 908, which is used to implement AI-related functions. The AI module can be implemented in software, hardware, or a combination of software and hardware. For example, the AI module can include a radio intelligence control (RIC) module. For example, the AI module can be a near-real-time RIC or a non-real-time RIC.

[0178] Optionally, the processor 901 and / or the memory 902 can also store data. The processor and the memory can be separately arranged, or can be integrated together.

[0179] Optionally, the communication apparatus 900 can also include a transceiver 905 and / or an antenna 906. The processor 901 can also be referred to as a processing unit, which controls the communication apparatus (such as a RAN node or a terminal). The transceiver 905 can also be referred to as a transceiving unit, a transceiver, a transceiving circuit, or a transceiver, and the like, which is used to realize the transceiving function of the communication apparatus through the antenna 906.

[0180] The processing unit 502 shown in FIG. 11 can be the processor 901. The transceiving unit 501 shown in FIG. 11 can be a communication interface, which can be a transceiver 905 in FIG. 15, and the transceiver 905 can include an input interface and an output interface. Alternatively, the transceiver 905 can also be a transceiving circuit, which can include an input interface circuit and an output interface circuit.

[0181] The embodiments of the present application further provide a computer readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, cause the processor to perform the method described in the possible implementation manners of the terminal device or the network device.

[0182] The embodiments of the present application further provide a computer program product (or computer program), which, when executed by a processor, causes the processor to perform the method of the possible implementation manners of the terminal device or the network device.

[0183] The embodiments of the present application further provide a chip system, which includes at least one processor for supporting a communication apparatus to implement the functions involved in the possible implementation manners of the communication apparatus. Optionally, the chip system further includes an interface circuit for providing program instructions and / or data for the at least one processor. In a possible design, the chip system can further include a memory for storing necessary program instructions and data of the communication apparatus. The chip system can be composed of a chip, or can include a chip and other discrete components, and the communication apparatus can be the terminal device or the network device in the foregoing method embodiments.

[0184] The embodiments of the present application further provide a communication system, which includes the terminal device and the network device in any of the foregoing embodiments.

[0185] The embodiments of the present application further provide a chip device, which includes a processor for invoking computer degrees or computer instructions stored in a memory, so that the processor executes the method provided in the embodiment shown in FIG. 7.

[0186] In a possible implementation manner, an input of the chip device corresponds to the receiving operation in any of the embodiments shown in FIG. 7, and an output of the chip device corresponds to the sending operation in any of the embodiments shown in FIG. 7.

[0187] Optionally, the processor is coupled with the memory through an interface.

[0188] Optionally, the chip device further includes a memory, and the memory stores computer degrees or computer instructions.

[0189] The processor mentioned in any of the above can be a general central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling execution of the method provided by any of the above and the embodiments shown in FIG. 7. The memory mentioned in any of the above can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), and the like.

[0190] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, a system, or a computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage and the like) embodying computer readable program code.

[0191] The present application is described in reference to the flowchart illustrations and / or block diagrams according to the methods, apparatus (systems) and computer program products of the present application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, an embedded processor or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0192] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart illustrations and / or block diagrams block or blocks.

[0193] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0194] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. The division of the units is merely a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0195] It should be understood that the above-described device embodiments are merely schematic. Among them, the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., they can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment. In addition, the device embodiments provided in the present application, the connection relationship between the modules in the drawings indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines.

[0196] In addition, each functional unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0197] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that make contributions or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program codes that can be stored in the medium.

[0198] In each embodiment of the present application, the terms between different embodiments, and / or the descriptions are consistent and can be mutually referred to if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0199] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method characterized by comprising: The method comprises: sending first information, the first information being used for indicating a highest proportion of a first time unit in a first time length, wherein uplink signals carried in the first time unit are sent at a first power level, the first time length further comprises a second time unit, uplink signals carried in the second time unit are sent at a second power level, the first time unit and the second time unit are non-overlapping time units; sending uplink signals based on the first information.

2. The method of claim 1, wherein, The method further comprises: sending second information, the second information being used for indicating a power difference between the first power level and the second power level.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: sending third information, the third information being used for indicating the first time length.

4. The method according to any one of claims 1 to 3, characterized in that, The method further comprises: sending fourth information, the fourth information being used for activating the first information.

5. The method of claim 4, wherein, The fourth information is used for indicating a second time length of a specific absorption rate (SAR) limited state.

6. The method of claim 4, wherein, The fourth information is used for indicating that the terminal device is in the SAR limited state.

7. The method according to claim 4 or 6, characterized in that, The method further comprises: sending fifth information, the fifth information being used for deactivating the first information.

8. The method of claim 7, wherein, The fifth information is used for indicating that the terminal device is in a non-SAR limited state.

9. The method according to any one of claims 4 to 8, characterized in that, The fourth information is carried in a power headroom report (PHR).

10. A communication method characterized by comprising: The method comprises: receiving first information, the first information being used for indicating a highest proportion of a first time unit in a first time length, wherein uplink signals carried in the first time unit are sent at a first power level, the first time length further comprises a second time unit, uplink signals carried in the second time unit are sent at a second power level, the first time unit and the second time unit are non-overlapping time units; scheduling the first time unit and the second time unit for the terminal device based on the first information.

11. The method of claim 10, wherein, The method further comprises: receiving second information, the second information being used for indicating a power difference between the first power level and the second power level.

12. The method according to claim 10 or 11, characterized in that, The method further comprises: receiving third information, the third information being used for indicating the first time length.

13. The method according to any one of claims 10 to 12, characterized in that, The method further comprises: receiving fourth information, the fourth information being used for activating the first information.

14. The method of claim 13, wherein, The fourth information is used for indicating a second time length of a specific absorption rate (SAR) limited state.

15. The method of claim 13, wherein, The fourth information is used for indicating that the terminal device is in the SAR limited state.

16. The method according to claim 13 or 15, characterized in that The method further comprises: receiving fifth information, the fifth information being used for deactivating the first information.

17. The method of claim 16, wherein, The fifth information is used for indicating that the terminal device is in a non-SAR limited state.

18. The method according to any one of claims 13 to 17, characterized in that, The fourth information is carried in a power headroom report (PHR).

19. A communications device, characterized by The communication device comprises at least one processor configured to perform the method of any one of claims 1 to 18.

20. The communication apparatus according to claim 19, wherein, The communication device is a chip or a chip system.

21. A readable storage medium, characterized by, The storage medium stores a computer program or instructions, which, when executed by the communication device, implement the method of any one of claims 1 to 18.

22. A computer program product, characterised in that, The computer program product, when running on a computer, causes the computer to perform the method of any one of claims 1 to 18.

23. A communications device, characterized by The apparatus comprises units or modules for performing the method of any one of claims 1 to 18.

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