Communication method and apparatus, and storage medium

Abstract

The present application relates to the technical field of communications, and provides a communication method and apparatus, and a storage medium, aiming to flexibly determine maximum power reduction (MPR) and increase the uplink transmission power of a terminal device. In the method, a terminal device sends first information to a network device, wherein the first information is used for indicating the correspondence between first MPR or a first power boost value and a first value of an out-of-band indicator, and the out-of-band indicator is used for limiting interference to a frequency range adjacent to a configured bandwidth of the terminal device; the terminal device receives second information from the network device, wherein the second information is used for indicating an allowable second value of the out-of-band indicator; and the terminal device determines second MPR or a second power boost value corresponding to the second value of the out-of-band indicator.

Description

Communication methods, devices and storage media

[0001] This application claims priority to Chinese Patent Application No. 202510294577.6, filed on March 12, 2025, entitled "Communication Method, Apparatus and Storage Medium", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more particularly to a communication method, apparatus, and storage medium. Background Technology

[0003] In the field of mobile communications, the maximum transmit power of a terminal device is an extremely important parameter. A terminal device can determine its maximum transmit power at any given time within a power range based on its own capabilities. The upper and lower limits of this power range are related to the terminal device's power class (PC).

[0004] Based on the power level of the terminal device, the protocol allows the terminal device to perform a certain degree of backoff under specific modulation schemes and resource block (RB) allocation methods, thereby reserving a certain margin to meet in-band and out-of-band performance indicators under any configuration. The indicator used to characterize this backoff is called maximum power reduction (MPR).

[0005] However, especially for some higher frequency bands, good adjacent-channel coexistence performance can be guaranteed without meeting the out-of-band leakage suppression level specified in the existing out-of-band specifications of the protocol. If the terminal equipment still uses the MPR determined based on the existing in-band / out-of-band specifications, it will result in lower uplink transmit power. Summary of the Invention

[0006] This application provides a communication method, apparatus, and storage medium to improve the uplink transmission power of terminal equipment.

[0007] Firstly, a communication method is provided, which can be applied to the terminal side, such as a terminal device or a module in the terminal device, or a circuit or chip in the terminal device. The following description uses the application of this method to a terminal device as an example.

[0008] The method includes: sending first information, the first information indicating the correspondence between a first MPR or a first power boost value and a first value of an out-of-band indicator, the out-of-band indicator being used to limit interference to a frequency range adjacent to the configured bandwidth of the terminal device; receiving second information, the second information indicating a second value of an allowed out-of-band indicator; and determining a second MPR or a second power boost value corresponding to the second value of the out-of-band indicator.

[0009] In this application, the first information can be regarded as capability information related to the transmit power of the terminal device. The correspondence between the first MPR or the first power boost value and the first value of the out-of-band index can be understood as follows: the terminal device supports reverting the transmit power back to the first MPR or increasing the first power boost value, but the requirements for the out-of-band index need to be relaxed to the first value; or, in other words, if the requirements for the out-of-band index are relaxed to the first value, the terminal device can support reverting the transmit power back to the first MPR or increasing the first power boost value.

[0010] Based on the technical solution of this application, the network device can flexibly configure a second value of an allowed out-of-band indicator for the terminal device based on the first information reported by the terminal device. The terminal device determines the corresponding second MPR or second power boost value according to the configured second value of the out-of-band indicator. The second MPR is less than or equal to the MPR determined based on existing in-band / out-of-band indicators, which helps to improve the uplink transmit power of the terminal device.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the first value of the out-of-band index corresponds to the first adjacent frequency range and / or the second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is the frequency range in the lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is the frequency range in the higher frequency direction adjacent to the configuration bandwidth.

[0012] In one possible implementation, the first value of the out-of-band metric corresponds to the first adjacent frequency range of the terminal device's configured bandwidth. Based on this, the correspondence between the first MPR or the first power boost value and the first value of the out-of-band metric can be understood as follows: the terminal device supports reverting the transmit power back to the first MPR or increasing the first power boost value, but it needs to relax the requirements for the out-of-band metric of the first adjacent frequency range to the first value; or, in other words, if the requirements for the out-of-band metric of the first adjacent frequency range are relaxed to the first value, the terminal device can support reverting the transmit power back to the first MPR or increasing the first power boost value.

[0013] In another possible implementation, the first value of the out-of-band metric corresponds to the second adjacent frequency range of the terminal device's configured bandwidth. Based on this, the correspondence between the first MPR or the first power boost value and the first value of the out-of-band metric can be understood as follows: the terminal device supports reverting the transmit power back to the first MPR or increasing the first power boost value, but it needs to relax the requirements for the out-of-band metric in the second adjacent frequency range to the first value; or, in other words, if the requirements for the out-of-band metric in the second adjacent frequency range are relaxed to the first value, the terminal device can support reverting the transmit power back to the first MPR or increasing the first power boost value.

[0014] In another possible implementation, the first value of the out-of-band metric corresponds to the first adjacent frequency range and the second adjacent frequency range of the terminal device's configured bandwidth. Based on this, the correspondence between the first MPR or the first power boost value and the first value of the out-of-band metric can be understood as follows: the terminal device supports reverting the transmit power back to the first MPR or increasing the first power boost value, but it needs to relax the requirements of the out-of-band metric for the first and second adjacent frequency ranges to the first value; or, in other words, if the requirements of the out-of-band metric for the first and second adjacent frequency ranges are relaxed to the first value, the terminal device can support reverting the transmit power back to the first MPR or increasing the first power boost value.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: determining the maximum transmit power of the terminal device based on a second MPR or a second power boost value, provided certain conditions are met. This is beneficial for increasing the maximum transmit power and improving uplink transmission performance.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the condition is any one of the following: the first value of the out-of-band indicator corresponds to a first adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth close to the first adjacent frequency range; the first value of the out-of-band indicator corresponds to a second adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth close to the second adjacent frequency range; or, the first value of the out-of-band indicator corresponds to the first adjacent frequency range and the second adjacent frequency range.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, determining the maximum transmit power of the terminal device based on the second MPR or the second power boost value includes: determining the maximum transmit power of the terminal device based on the second MPR or the second power boost value, and one or more of the following: the configured frequency band of the terminal device, the configured bandwidth of the terminal device, the power level supported by the terminal device, the RB allocation method or modulation method.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the configuration frequency band of the terminal device belongs to frequency range 1 (FR 1).

[0019] Secondly, a communication method is provided that can be applied to the network side, such as a network device or a module in a network device, or a circuit or chip in a network device. The following description uses the application of this method to a network device as an example.

[0020] The method includes: receiving first information, the first information indicating the correspondence between a first MPR or a first power boost value and a first value of an out-of-band indicator, the out-of-band indicator being used to limit interference to a frequency range adjacent to the configured bandwidth of the terminal device; and sending second information, the second information indicating a second value of an allowed out-of-band indicator.

[0021] Based on the technical solution of this application, the network device can flexibly configure a second value of an allowed out-of-band indicator for the terminal device based on the first information reported by the terminal device. In this way, the terminal device can determine the corresponding second MPR or second power boost value according to the configured second value of the out-of-band indicator. The second MPR is less than or equal to the MPR determined according to the existing in-band / out-of-band indicators, which is beneficial to improving the uplink transmission power of the terminal device.

[0022] In conjunction with the second aspect, in some implementations of the second aspect, the first value of the out-of-band index corresponds to the first adjacent frequency range and / or the second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is the frequency range in the lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is the frequency range in the higher frequency direction adjacent to the configuration bandwidth.

[0023] In conjunction with the second aspect, in some implementations of the second aspect, the configuration frequency band of the terminal device belongs to FR 1.

[0024] It should be understood that the second aspect of this application corresponds to the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here.

[0025] Thirdly, a communication apparatus is provided for executing the method in any possible implementation of any of the above aspects. Specifically, the apparatus includes a module for executing the method in any possible implementation of any of the above aspects.

[0026] In one design, the device may include modules that perform the methods / operations / steps / actions described in any of the above aspects. These modules may be hardware circuits, software, or a combination of hardware circuits and software.

[0027] In another design, the device is a communication chip, which may include input circuitry or interface for transmitting information or data, and output circuitry or interface for receiving information or data.

[0028] In another design, the device is a terminal device or a network device, which may include a transmitter for sending information or data and a receiver for receiving information or data.

[0029] In another design, the device is used to perform the method in any of the possible implementations of any of the above aspects, and the device can be configured in a terminal device or a network device.

[0030] Fourthly, a communication device is provided, comprising at least one processor for calling and running a computer program from a memory, such that the device performs the method in any possible implementation of any of the preceding aspects.

[0031] Optionally, the device further includes a memory for storing instructions and data. The memory is coupled to the processor, which, when executing the instructions stored in the memory, can implement the methods described in the foregoing aspects.

[0032] Optionally, the device may also include a transmitter and a receiver, which may be separate or integrated together and referred to as a transceiver.

[0033] Fifthly, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code or instructions), which, when run, causes a computer to perform a method in any possible implementation of any of the above aspects.

[0034] In a sixth aspect, a computer-readable storage medium is provided that stores a computer program (also referred to as code or instructions) that, when executed on a computer, causes the computer to perform the methods in any possible implementation of any of the above aspects.

[0035] In a seventh aspect, this application provides a chip system including at least one processor for supporting the implementation of the functions involved in any possible implementation of any of the above aspects, such as receiving or processing data involved in the above methods.

[0036] In one possible design, the chip system also includes a memory for storing program instructions and data, which may be located within or outside the processor.

[0037] Optionally, the chip system may consist of chips or may include chips and other discrete components.

[0038] Eighthly, this application provides a communication system including a terminal device for implementing the method described in the first aspect and any possible implementation thereof, and a network device for implementing the method described in the second aspect and any possible implementation thereof.

[0039] It should be understood that the third to eighth aspects of this application correspond to the technical solutions of the first to second aspects of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0040] Figure 1 is a schematic diagram of the architecture of the communication system used in the embodiments of this application;

[0041] Figure 2 is a schematic diagram of an EVM;

[0042] Figure 3 is a schematic flowchart of a communication method provided in an embodiment of this application;

[0043] Figures 4 and 5 are schematic block diagrams of the communication device provided in the embodiments of this application;

[0044] Figure 6 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0045] Figure 7 is a schematic diagram of the structure of a network device provided in an embodiment of this application. Detailed Implementation

[0046] To facilitate understanding of the embodiments of this application, the following points will be explained first:

[0047] First, in the embodiments shown below, the terms and English abbreviations, such as MPR, ACLR, SEM, power boost, out-of-band metrics, etc., are merely exemplary examples given for ease of description and should not constitute any limitation on this application. This application does not preclude the possibility of defining other terms that can achieve the same or similar functions in existing or future agreements.

[0048] Second, in the embodiments shown below, the terms "first," "second," and various numerical designations are merely for descriptive convenience to distinguish identical or similar items with essentially the same function and purpose. For example, "first information" and "second information" are only used to distinguish different information and do not limit their order, nor are they used to limit the scope of the embodiments of this application. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and that "first," "second," etc., are not necessarily different.

[0049] Third, "at least one" means one or more, while "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0050] Fourth, in this application, "instruction" can include direct and indirect instructions, explicit and implicit instructions, and instructions used for determination. When describing certain instruction information to indicate A, it can be understood that the instruction information carries A, directly indicates A, or indirectly indicates A. In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementation, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is a correlation between the other information and the information to be instructed. It can also indicate only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various information, thereby reducing instruction overhead to some extent. Furthermore, the information to be instructed can be sent as a whole or divided into multiple sub-information to be sent separately, and the sending period and / or timing of these sub-information can be the same or different. This application does not limit the specific method of instruction. It is understood that, for the sender of the instruction information, the instruction information can be used to indicate the information to be indicated, and for the receiver of the instruction information, the instruction information can be used to determine the information to be indicated.

[0051] The information in this application is used to indicate one or more contents, or it may be replaced with the information indicating one or more contents, or the information including one or more contents.

[0052] Fifth, in this application, "when," "if," and "if" all refer to the device taking corresponding actions under certain objective circumstances, not to a time limit, nor do they require the device to perform a judgment action, nor do they imply any other limitations. Unless otherwise specified, "if" and "if" are interchangeable, and "when" and "under the circumstances" are interchangeable. "When" is interchangeable with "if" / "if."

[0053] Sixth, in this application, the words "exemplarily" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design that is described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design options. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0054] Seventh, "Sending information / data" only indicates the direction of information / data transmission, including direct transmission via the device's communication interface (such as an air interface). "Sending" can also be understood as the "output" of the module interface. "Sending" can include indirect transmission by the processing unit through the communication interface, that is, after the processing unit outputs information / data through the module interface, it is transmitted to the device's communication interface and then sent out. "Receiving information / data" only indicates the direction of information / data transmission, including direct reception via the communication interface. "Receiving" can also be understood as the "input" of the module interface. "Receiving information / data" can include indirect reception by the processing unit through the communication interface, that is, after the communication interface receives information / data, it is transmitted to the module interface of the processing unit and then input to the processing unit. "Sending information / data to… (such as a terminal device)" can be understood as the destination of the information being the terminal device. It can include sending information / data directly or indirectly to the terminal device. "Receiving information / data from… (such as a terminal device)" can be understood as the source of the information being the terminal device, and can include receiving information / data directly or indirectly from the terminal device. Information / data may undergo necessary processing, such as format changes, between the source and destination, but the destination can understand the valid information / data from the source. Similar statements in this application can be understood in a similar way, and will not be repeated here.

[0055] In other words, sending and receiving can occur between devices, such as between terminal devices and network devices; or they can occur within a device, such as between components, modules, chips, software modules, or hardware modules within a device via a bus, wiring, or interface.

[0056] Eighth, in this application, the solutions in each embodiment can be used in a reasonable combination, and the explanations or descriptions of various terms, similar operations, or steps appearing in the embodiments can be referenced or explained to each other in the various embodiments, without limitation.

[0057] The technical solutions of this application can be applied to various communication systems, such as: fourth-generation (4G) communication systems (also known as Long Term Evolution, LTE) systems, fifth-generation (5G) communication systems (also known as New Radio, NR) systems, satellite communication systems, wireless fidelity (WiFi) systems, and the solutions provided in this application can also be applied to future communication systems or other communication systems. This application does not limit these applications.

[0058] Figure 1 is a schematic diagram of the architecture of the communication system applied in an embodiment of this application. Figure 1 shows a schematic diagram of a possible, non-limiting system architecture. As shown in Figure 1, the communication system 100 includes a radio access network (RAN) 10 and a core network 20. Optionally, the communication system 100 also includes the Internet 30. The RAN 10 may include at least one access network device (110a and 110b in Figure 1) and at least one terminal (120a-120j in Figure 1). The terminal is wirelessly connected to the access network device, and the access network device is wirelessly or wiredly connected to the core network 20. The core network device and the access network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the access network device may be integrated on the same physical device, or a single physical device may integrate some of the functions of the core network device and some of the functions of the access network device. Terminals and access network devices can be interconnected via wired or wireless means. Figure 1 is just a schematic diagram. The communication system may also include other access network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1.

[0059] The radio access network 10 can be a cellular system related to the 3rd generation partnership project (3GPP), such as a 4G system (LTE system), a 5G system (NR system), or it can be applied to future mobile communication systems or other similar communication systems, without specific limitations. The radio access network 10 can also be an open radio access network (open RAN, O-RAN, or ORAN) or a cloud radio access network (CRAN). The radio access network 10 can also be a non-terrestrial network (NTN), a satellite communication network, a high altitude platform station (HAPS) communication network, an integrated access and backhaul (IAB) communication network, a reconfigurable intelligent surface (RIS) communication network, etc. The radio access network 10 can also be a communication system that integrates two or more of the above systems.

[0060] Access network devices are nodes in a radio access network, also known as RAN nodes or RAN devices. Access network devices help terminals achieve wireless access. Multiple access network devices in communication system 100 can be nodes of the same type or different types.

[0061] In one possible scenario, access network equipment can be a base station, an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next-generation NodeB (gNB), a base station in a future mobile communication system, an access point (AP) in a satellite, an integrated access and backhaul (IAB) node, or access network equipment in a mobile switching center non-terrestrial network (NTN) communication system. This means it can be deployed on high-altitude platforms or satellites. Access network equipment can be a macro base station (as shown in Figure 1, 110a), a micro base station or indoor station (as shown in Figure 1, 110b), a relay node or donor node, or a radio controller in a CRAN scenario. Access network equipment can also function as a base station in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, drone communication, and machine-to-machine (M2M) communication. Optionally, access network equipment can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU).

[0062] In another possible scenario, multiple access network devices collaborate to assist terminals in achieving wireless access, with each access network device implementing a portion of the base station's functions. For example, access network devices can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be set up separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). It is understood that access network devices can be CU nodes, DU nodes, or devices including both CU and DU nodes. Furthermore, CUs can be classified as access network devices within the RAN (RAN) or as access network devices within the core network; no restrictions are placed here.

[0063] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an O-RAN system, CU can also be called O-CU (Open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0064] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from access network equipment. Terminals can also be referred to as terminal devices, terminal equipment, user equipment (UE), mobile stations, mobile terminals, etc.

[0065] For example, terminal devices include handheld devices and in-vehicle devices with wireless connectivity. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices (such as smartwatches, smart bracelets, pedometers, smart glasses, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), satellite terminals, virtual reality (VR) devices, augmented reality (AR) devices, point-of-sale (POS) machines, customer-premises equipment (CPE), light user equipment (UE), reduced capability user equipment (REDCAP UE), wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, robotic arms, workshop equipment, wireless terminals in autonomous driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, and flying equipment (such as intelligent robots, hot air balloons, drones, airplanes), etc. Terminal devices can also be vehicle devices, such as vehicle devices, vehicle modules, vehicle chips, on-board units (OBUs) or telematics boxes (T-BOXs). Terminal devices can also be other devices with terminal functions. For example, a terminal device can also be a device that performs terminal functions in D2D communication.

[0066] The embodiments of this application do not limit the form of the terminal device. The device used to implement the functions of the terminal device can be the terminal device itself, or it can be a device that supports the terminal device in implementing the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the embodiments of this application, the chip system can be composed of chips, or it can include chips and other discrete devices. All or part of the functions of the terminal device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).

[0067] Terminal devices can be widely used in various scenarios, such as D2D, V2X communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart cities, etc.

[0068] Access network devices and terminals can be fixed in location or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the access network devices and terminals.

[0069] The roles of access network devices and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile access network device. For terminals 120j that access the wireless access network 10 via 120i, terminal 120i is an access network device; however, for access network device 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via an interface protocol between access network devices. In this case, relative to 110a, 120i is also an access network device. Therefore, access network devices and terminals can both be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with access network device functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0070] Communication between access network devices and terminals, between access network devices, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0071] In the embodiments of this application, the functions of the access network device can be executed by modules (such as chips) within the access network device, or by a control subsystem that includes access network device functions. This control subsystem, including access network device functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0072] In this application, the access network device sends downlink (DL) signals or downlink information to the terminal, which are carried on the downlink channel; the terminal sends uplink (UL) signals or uplink information to the access network device, which are carried on the uplink channel. To communicate with the access network device, the terminal can establish a radio connection on a cell controlled by the access network device. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with the serving cell, it may also be subject to interference from signals from neighboring cells.

[0073] In this application, the time-domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete fourier transform-spread-OFDM (DFT-s-OFDM) symbol. Unless otherwise specified, the symbols used in the embodiments of this application refer to time-domain symbols.

[0074] It is understood that in the embodiments of this application, the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH) are only examples of uplink data channels and uplink control channels, respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of this application do not limit this.

[0075] The frequency domain resources discussed in this application may include Resource Blocks (RBs) and Physical Resource Blocks (PRBs). An RB is the basic unit of channel resource allocation in the frequency domain for 5G NR, and can contain up to 12 subcarriers. The subcarrier spacing in 5G NR is variable, therefore the actual bandwidth of an RB is also variable. A PRB refers to an RB included in the configured bandwidth or bandwidth part (BWP) of a specific terminal device in 5G NR, numbered starting from 0, and is the basic unit of data channel scheduling.

[0076] To better understand the methods provided in the embodiments of this application, the terms involved in this application will be briefly explained below.

[0077] 1. Maximum transmit power of the terminal equipment

[0078] At a certain moment, the terminal device is configured with the maximum transmit power P on serving cell c and carrier f. CMAX,f,c Satisfy: P CMAX,L,f,c ≤P CMAX,f,c ≤P CMAX,H,f,c This can be understood as the terminal device operating within a predefined power range P. CMAX,L,f,c ~P CMAX,H,f,c The P value at the current time is determined internally. CMAX,f,c The value of is determined by the existence of variables such as MPR or power management-maximum power reduction (P-MPR). Therefore, the maximum transmit power P determined by the terminal device at different times varies. CMAX,f,c They may be different.

[0079] Among them, P CMAX,L,f,c The lower limit of the maximum transmit power satisfies the following formula: P CMAX,L,f,c =min{P EMAX,c -ΔT C,c ,(P PowerClass -ΔP PowerClass +ΔP PowerBoost )-max(max(MPR c +ΔMPR c A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS P-MPR c )} (1)

[0080] P CMAX,H,f,c The upper limit of the maximum transmit power satisfies the following formula: P CMAX,H,f,c =min{P EMAX,cP PowerClass -ΔP PowerClass +ΔP PowerBoost} (2)

[0081] This application focuses on the parameter MPR in the above formula (1). c and parameter P PowerClass MPR c Indicates in P PowerClass The power back-off value based on this. Where, P PowerClass It can be determined based on the power level of the terminal equipment. The power level corresponding to single-carrier transmission (single-band operation) is P... PowerClass The possible values ​​are shown in Table 1.

[0082] Table 1

[0083] As shown in Table 1, for a certain frequency band, if the terminal device supports PC 2, it means that the theoretical upper limit of the terminal device's transmit power can reach 26dB (excluding tolerance).

[0084] 2. Nonlinear distortion

[0085] The propagation of electromagnetic waves in wireless channels requires consideration of how to combat path loss, which is proportional to the frequency and the distance between the transmitter and receiver. One possible approach is to reduce path loss by increasing the transmit power at the antenna port. Typically, power amplifiers (PAs) are used in RF links to amplify small signals, which are then modulated and filtered to transmit within the target frequency range. However, considering that all components in the RF link, except for the PA, have non-ideal characteristics, other nonlinear distortions will exist in the spectrum besides the useful signal transmitted from the antenna port within the target frequency range. These nonlinear distortions can be collectively referred to as spurious components other than the useful signal. If the total power at the transmitter increases, the spurious components will also increase along with the increase in the useful signal. Therefore, from a system performance perspective, it is necessary to impose certain suppression requirements on the spurious components generated by the terminal equipment to avoid excessive increases in the noise floor of the entire spectrum.

[0086] 3. Configure indicators within the bandwidth.

[0087] Transmit modulation quality (TMQ) is an indicator within the configured bandwidth of a terminal device. The definition of this indicator includes, but is not limited to, the error vector magnitude (EVM) within the scheduled resource blocks (RBs) and the in-band emissions (IBE) within the unscheduled resources.

[0088] 3.1. EVM is the square root of the ratio of the average power of the error vector to the average power of the reference signal. It reflects the error between the measured signal and the reference signal. The measured signal is the signal actually transmitted by the terminal device, and the reference signal is the quadrature amplitude modulation (QAM) constellation diagram defined by the protocol. In NR, QAM symbols are mainly used to modulate the 0 / 1 bits generated by the signal source.

[0089] Referring to the schematic diagram of EVM shown in Figure 2, the main differences between the error vector and the reference point include signal amplitude and phase. Factors leading to EVM degradation include, but are not limited to, PA nonlinearity, I / Q mismatch, phase noise, and transceiver noise. By controlling the requirements of EVM, it is possible to prevent the QAM modulation symbols emitted by the terminal equipment from being too distorted, thus affecting the demodulation of the network equipment.

[0090] The uplink EVM requirements for different modulation schemes are shown in Table 2. For example, when the modulation scheme is π / 2-binary phase shift keying (BPSK), the average EVM cannot exceed 30%; when the modulation scheme is quadrature phase shift keying (QPSK), the average EVM cannot exceed 17.5%; when the modulation scheme is 16QAM, the average EVM cannot exceed 12.5%; when the modulation scheme is 64QAM, the average EVM cannot exceed 8%; and when the modulation scheme is 256QAM, the average EVM cannot exceed 3.5%.

[0091] Table 2

[0092] 3.2 The signal quality within a scheduled RB is primarily constrained by the EVM. To prevent excessive interference from the uplink transmission of the current terminal device to the spectrum not allocated to the terminal device, other RBs within the terminal device's scheduled resources must not have excessive energy leakage. This needs to be constrained by the IBE (Integrated Power Requirement) metric. It should be noted that the IBE metric limits the ratio of the actual power transmitted by the terminal device on a scheduled RB to the measured power on an unscheduled RB.

[0093] 4. Configure indicators other than bandwidth

[0094] The metrics outside the configured bandwidth of a terminal device are called out-of-band emission, which are used to constrain the radiation of the terminal device to the out-of-band spectrum. The following mainly introduces two metrics included in out-of-band emission: adjacent channel leakage ratio (ACLR) and spectrum emission mask (SEM).

[0095] 4.1 ACLR reflects the ratio of transmitted signal strength on in-band spectrum resources to energy leakage on out-of-band spectrum resources. The definition of the ACLR measurement bandwidth in the protocol is shown in Table 3, and the ACLR corresponding to different power levels is shown in Table 4.

[0096] Table 3

[0097] Table 4

[0098] In the formula shown in Table 3, B MBW Represents the measurement bandwidth (MBW), REF_SCS represents the reference subcarrier spacing, and N... RB This represents the total number of RBs within the configured bandwidth. As can be seen from this formula, the measured bandwidth is essentially the same as the configured bandwidth. Table 4 shows that different power levels have corresponding ACLR indicators, which constrain the terminal device to extend N to the left and right of its configured bandwidth. RB The amount of energy leaked in the spectrum of each RB.

[0099] 4.2 SEM defines a stepped template that limits the energy radiation value that the terminal device cannot exceed within each measurement bandwidth in different out-of-band radiation (OOB) ranges, as shown in Table 5.

[0100] Table 5

[0101] In Table 5, BW channal Indicates the configured bandwidth (channel bandwidth), Δf OOBThis indicates the out-of-band radiation (OOB) range. Different OOB ranges have corresponding SEM requirements. Taking a 20MHz configuration bandwidth (channel bandwidth) as an example, within the 0–1MHz range outside the configuration bandwidth (i.e., the OOB range is 0–1MHz), the energy after integrating every 0.2MHz (1% of 20MHz) of spectrum must not exceed -13dBm; within the 1–5MHz range outside the configuration bandwidth (i.e., the OOB range is 1–5MHz), the energy after integrating every 1MHz of spectrum must not exceed -10dBm; within the 5–20MHz range outside the bandwidth (i.e., the OOB range is 5–20MHz), the energy after integrating every 1MHz of spectrum must not exceed -13dBm; and within the 20–25MHz range outside the bandwidth (i.e., the OOB range is 20–25MHz), the energy after integrating every 1MHz of spectrum must not exceed -25dBm.

[0102] 5. MPR

[0103] Based on power levels, the protocol allows terminal devices to perform a certain degree of power back-off under specific RB allocation methods, waveforms, and modulation methods, thereby reserving a certain margin for them to meet indicators such as EVM, IBE, ACLR, and SEM under any configuration. The indicator used to characterize this power back-off is MPR.

[0104] Table 6 shows the MPR values ​​under different RB allocation methods, waveforms, and modulation schemes based on PC 2. Table 7 shows the MPR values ​​under different RB allocation methods, waveforms, and modulation schemes based on PC 3. The waveforms include DFT-s-OFDM and cyclic prefix orthogonal frequency division multiplexing (CP-OFDM). The RB allocation methods include edge RB allocations, outer RB allocations, and inner RB allocations. Edge RB allocation refers to RB allocation at the edge of a specific area or range, which could be the edge of a cell or a specific BWP, etc. Outer RB allocation refers to RB allocation at the edge of the configured bandwidth or in a relatively outer area. Inner RB allocation refers to RB allocation in the center of the configured bandwidth or in a relatively inner area. Since the signal quality in the center of the configured bandwidth is usually better and the channel conditions are relatively stable, inner RBs can be allocated to services that require high data transmission quality, large bandwidth, and high speed.

[0105] As can be seen from Tables 6 and 7, compared with other RB allocation methods, the internal RB allocation has a smaller MPR under the same debugging mode and waveform. The reason is that the closer to the frequency band edge, the higher the risk of not meeting the requirements of SEM and ACLR, and the more power back-off the terminal equipment needs to perform to meet the requirements of SEM and ACLR. The closer to the frequency band center, the lower the risk of not meeting the requirements of SEM and ACLR, and the less power back-off the terminal equipment needs to perform to meet the requirements of SEM and ACLR.

[0106] Table 6

[0107] Table 7

[0108] However, when 3GPP studied higher frequency bands of FR 1 (such as band n104), it proposed that there is room for relaxation of out-of-band specifications. This means that for some higher frequency bands, it is not necessary to achieve the fixed out-of-band leakage suppression ratio (MPR) specified in the existing out-of-band specifications to ensure good adjacent-channel coexistence performance. This implies that terminal devices can transmit signals at higher power without excessive power back-off. Therefore, if terminal devices still use the MPR determined based on existing in-band and / or out-of-band specifications, it will result in lower uplink transmit power, thus affecting the uplink transmission performance of the terminal devices.

[0109] In view of this, embodiments of this application provide a communication method in which a network device can configure allowed out-of-band index values ​​for a terminal device based on capability information reported by the terminal device, and the terminal device determines the corresponding MPR or power boost value according to the configured out-of-band index values.

[0110] The methods provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0111] Figure 3 is a schematic flowchart of a communication method 300 provided in an embodiment of this application. The steps of method 300 can be interactively executed by a terminal device (or modules in the terminal device, such as processors, chips, chip systems, circuits, etc.) and a network device (or modules in the network device, such as processors, chips, chip systems, circuits, etc.). The following description uses a terminal device and a network device as examples. Furthermore, the processing performed by a single execution entity can also be divided into multiple execution entities, which can be logically and / or physically separated. For example, the processing performed by the network device can be divided into execution by at least one of CU, DU, RU, etc.

[0112] Method 300 may include steps S301 to S303, and the steps in method 300 are described in detail below.

[0113] S301, the terminal device sends first information to the network device. The first information indicates the correspondence between a first MPR or a first power boost value and a first value of an out-of-band indicator, which is used to limit interference to frequency ranges adjacent to the configured bandwidth of the terminal device. Accordingly, the network device receives the first information.

[0114] In this application, the first information may be included in the capability information reported by the terminal device to the network device. Optionally, the capability information may also include the frequency band accessed by the terminal device, i.e., the configured frequency band of the terminal device, and the configured bandwidth of the terminal device is a part of the configured frequency band of the terminal device.

[0115] For example, the frequency band is configured as band n104, which is the frequency range of 6.425 to 7.125 GHz, and the bandwidth is configured as 100 MHz of it.

[0116] Out-of-band metrics include, for example, ACLR or SEM, as described above. A higher ACLR value indicates a higher level of interference suppression by the terminal device against frequency ranges adjacent to its configured bandwidth. A lower SEM value indicates less interference is allowed to leak into a frequency range adjacent to the terminal device's configured bandwidth.

[0117] Based on the above description of the maximum transmit power of the terminal device, the first MPR or first power boost value in the embodiments of this application will be described below.

[0118] The first MPR is the theoretical upper bound of the transmit power corresponding to a specific frequency band and power level (such as P in formula (1) above). PowerClass Based on this, the power back-off value supported by the terminal device.

[0119] The first power boost value is the theoretical upper bound of the transmit power corresponding to a specific frequency band and power level (such as P in formula (2) above). PowerClass Based on this, the power boost value supported by the terminal device.

[0120] The first power boost value corresponds to the first value of the out-of-band index. This correspondence can be understood as follows: for a specific frequency band and power level, in order to support increasing the first power boost value based on the upper bound of the corresponding theoretical transmit power, the out-of-band index needs to be relaxed to the first value; or, for a specific frequency band and power level, if the out-of-band index is relaxed to the first value, it is possible to support increasing the first power boost value based on the upper bound of the theoretical transmit power.

[0121] The first MPR corresponds to the first value of the out-of-band index. This correspondence can be understood as follows: for a specific frequency band and power level, in order to support the first MPR at the upper limit of the corresponding theoretical transmit power, the out-of-band index needs to be relaxed to the first value; or, for a specific frequency band and power level, if the out-of-band index is relaxed to the first value, it is possible to support the first MPR at the upper limit of the theoretical transmit power.

[0122] For example, referring to Table 1, for frequency band n104, the terminal device supports PC 3, and the theoretical upper bound P of the corresponding transmit power is... PowerClass If the first MPR is 2dB, it means that the terminal device supports a 2dB backoff from the theoretical upper limit of 23dB for transmit power.

[0123] In one possible implementation, the first information includes the change value of the MPR, which is a smaller backsliding MPR based on the third MPR, which is the MPR selected to meet the out-of-band performance requirements in the current protocol (corresponding to the parameter MPR in the above formula (1)). c The first MPR can be determined based on the third MPR and the change in that MPR. For example, let the third MPR be P3, and the change in that MPR be ΔP. d If the first MPR is P1, then P1 = P3 - ΔP d .

[0124] In this application, the third MPR corresponds to the out-of-band performance requirements in the current NR FR 1 (TS 38.101-1) protocol. It can be understood that in order to meet the out-of-band performance requirements in the current protocol, the transmit power of the terminal device needs to be backed up to the third MPR. In other words, the out-of-band performance requirements in the current protocol can be met if the transmit power of the terminal device is backed up to the third MPR.

[0125] It should be noted that the protocol mentioned below refers to the NR FR 1 protocol.

[0126] The following section uses ACLR as an out-of-band metric to introduce the requirements of the third MPR and ACLR in the current protocol.

[0127] As explained above regarding ACLR, different power levels have corresponding ACLR requirements. Referring to Table 4, the current protocol specifies an ACLR requirement of 37 dB for PC 1, 31 dB for PC 1.5, 31 dB for PC 2, and 30 dB for PC 3.

[0128] Taking the terminal device's configured frequency band as band n104, supporting PC 3 as an example, in order to meet the 30dB ACLR requirement, the terminal device needs to make a certain degree of backoff based on the theoretical upper limit of the transmit power. Referring to Table 7, under the configuration of external RB allocation, CP-OFDM waveform, and QPSK modulation method, according to the current protocol, the corresponding MPR range for this configuration is less than or equal to 3dB, and the terminal device can determine the third MPR within this range.

[0129] The following section uses SEM (Self-Effective Metric) as an example to introduce the requirements for the third MPR (Mandatory Performance Reduction) and SEM in the current protocol.

[0130] As can be seen from the above introduction to SEM, given the configuration bandwidth and measurement bandwidth, different OOB ranges have their corresponding SEM requirements. Referring to Table 5, taking a configured bandwidth of 20MHz as an example, the current protocol stipulates that within the 0-1MHz range outside the configured bandwidth (i.e., the OOB range is 0-1MHz), the energy after integrating every 0.2MHz of spectrum cannot exceed -13dBm, which is the requirement for SEM (Self-Effective Microscopy). Within the 1-5MHz range outside the configured bandwidth (i.e., the OOB range is 1-5MHz), the energy after integrating every 1MHz of spectrum cannot exceed -10dBm, which is the requirement for SEM. Within the 5-20MHz range outside the bandwidth (i.e., the OOB range is 5-20MHz), the energy after integrating every 1MHz of spectrum cannot exceed -13dBm, which is the requirement for SEM. Within the 20-25MHz range outside the bandwidth (i.e., the OOB range is 20-25MHz), the energy after integrating every 1MHz of spectrum cannot exceed -25dBm, which is the requirement for SEM.

[0131] Taking a terminal device configured with frequency band n104, supporting PC 3, and an OOB range of 0–1MHz as an example, in order to meet the SEM requirement of -13dBm corresponding to the OOB range of 0–1MHz, the terminal device needs to make a certain degree of backoff based on the theoretical upper limit of the transmit power. Referring to Table 7, under the configuration of external RB allocation, CP-OFDM waveform, and QPSK modulation method, according to the current protocol, the MPR range corresponding to this configuration is less than or equal to 3dB, and the terminal device can determine the third MPR within this range.

[0132] For ease of description, the following text will primarily use the MPR value corresponding to the configuration of external RB allocation, CP-OFDM waveform, and QPSK modulation method as examples. The following text will also primarily use the out-of-band performance values ​​corresponding to the configuration of frequency band n104, bandwidth of 20MHz, and PC 3 support in the terminal device as examples.

[0133] For some higher frequency bands, such as band n104, good adjacent-channel coexistence performance can be guaranteed without meeting the out-of-band leakage suppression level specified in the existing out-of-band indicators of the protocol. Therefore, the requirements for these out-of-band indicators can be appropriately relaxed. Correspondingly, the MPR can be appropriately relaxed, i.e., less power back-off can be performed, thereby increasing the maximum transmit power of the terminal equipment. Based on this, the terminal equipment indicates the correspondence between the first MPR or the first power boost value and the first value of the out-of-band indicator to the network equipment. This is equivalent to instructing the network equipment to support backing down the transmit power by the first MPR or increasing the first power boost value, but the out-of-band indicator requirement needs to be relaxed from the third value to the first value. Correspondingly, the power back-off can be relaxed from the third MPR to the first MPR. That is, if the first value of the out-of-band indicator is less than the third value of the out-of-band indicator, the first MPR can be less than the third MPR.

[0134] Taking out-of-band performance index ACLR as an example, for frequency band n104, the terminal device supports PC 3. Referring to Table 4, the third value of ACLR is 30dB, and the corresponding third MPR is 3dB. If the ACLR requirement can be relaxed from the third value to the first value, then the power back-off can be relaxed from the third MPR to the first MPR. For example, the first value of ACLR is 26dB, and the corresponding first MPR is 2dB.

[0135] Taking SEM (Self-Effective Metric) as an example, for frequency band n104, the terminal device supports PC 3. Referring to Table 5, the third value of SEM is -13dBm, and the corresponding third MPR is 3dB. If the requirement for SEM can be relaxed from the third value to the first value, then the power back-off can be relaxed from the third MPR to the first MPR. For example, the first value of SEM is -10dBm, and the corresponding first MPR is 2dB.

[0136] In the embodiments of this application, the first value of the out-of-band index can be the SEM requirement corresponding to a certain OBB range. For example, with a configured bandwidth of 20MHz, the first value of SEM in the 0-1MHz range outside the configured bandwidth (i.e., the OOB range is 0-1MHz) is the SEM requirement that the energy after integration for every 0.2MHz of spectrum cannot exceed, for example, -10dB.

[0137] S302, the network device sends second information to the terminal device, the second information indicating a second value of an allowed out-of-band indicator. Accordingly, the terminal device receives the second information.

[0138] Based on the first information, the network device determines whether to allow out-of-band indicators to relax to a first value, and indicates to the terminal device a second value of the allowed out-of-band indicators.

[0139] The following example uses the lower limit of the network device's allowed out-of-band indicator relaxation as the first threshold to illustrate the relationship between the first value of the out-of-band indicator and the second value of the out-of-band indicator.

[0140] If the first value of the out-of-band metric meets the first threshold, the network device can allow the out-of-band metric to relax to the first value, that is, allow the terminal device's transmit power to revert to the first MPR, or increase the first power boost value. In this case, the second value of the out-of-band metric is equal to the first value of the out-of-band metric. It can be understood that if the out-of-band metric is ACLR, the first value meeting the first threshold means that the first value of the out-of-band metric is greater than or equal to the first threshold; if the out-of-band metric is SEM, the first value meeting the first threshold means that the first value of the out-of-band metric is less than or equal to the first threshold.

[0141] For example, if the out-of-band metric is ACLR and the first threshold is 26dB, and the terminal device supports PC 3, if the first value of ACLR is 26dB, which is equal to the first threshold, then the second value of ACLR is equal to the first value of ACLR, which is 26dB; if the first value of ACLR is 27dB, which is greater than the first threshold, then the second value of ACLR is equal to the first value of ACLR, which is 26dB.

[0142] It should be noted that if the out-of-band metric is SEM, different OOB ranges have their corresponding first threshold.

[0143] For example, if the configured bandwidth is 20MHz, the OOB range is 0 to 1MHz, and the corresponding first threshold is -10dBm; if the OOB range is 1 to 5MHz, the corresponding first threshold is -7dBm; if the OOB range is 5 to 20MHz, the corresponding first threshold is -10dBm; and if the OOB range is 20 to 25MHz, the corresponding first threshold is -22dBm.

[0144] If the first value of the out-of-band indicator does not meet the first threshold, the network device does not allow the out-of-band indicator to relax to the first value, and the network device can indicate a second value of the allowed out-of-band indicator to the terminal device.

[0145] Understandably, if the out-of-band metric is ACLR, and the first value of the out-of-band metric does not meet the first threshold (meaning the first value of the out-of-band metric is less than the first threshold), then the second value of the out-of-band metric is greater than the first value. Optionally, the second value of the out-of-band metric is equal to the first threshold. Similarly, if the out-of-band metric is SEM, and the first value of the out-of-band metric does not meet the first threshold (meaning the first value of the out-of-band metric is greater than the first threshold), then the second value of the out-of-band metric is less than the first value. Optionally, the second value of the out-of-band metric is equal to the first threshold.

[0146] For example, if the out-of-band metric is ACLR and the first threshold is 26 dB, and the first value of ACLR is 25 dB, which is less than the first threshold, then the second value of ACLR is greater than the first value of ACLR. For example, the second value of ACLR is equal to the first threshold.

[0147] For example, if the out-of-band metric is SEM and the first threshold is -10dBm, and the first value of SEM is -9dBm, which is greater than the first threshold, then the second value of SEM is less than the first value of SEM. For example, the second value of SEM is equal to the first threshold.

[0148] S303, the terminal device determines the second MPR or second power boost value corresponding to the second value of the out-of-band indicator.

[0149] Regarding the relationship between the second value of the out-of-band indicator and the first and / or third value of the out-of-band indicator, the following situations exist:

[0150] Case 1: The second value of the out-of-band indicator is equal to the first value of the out-of-band indicator. In this case, the second MPR is equal to the first MPR.

[0151] Case 2: The second value of the out-of-band indicator is greater than the first value of the out-of-band indicator and less than the third value of the out-of-band indicator. In this case, the second MPR is between the first MPR and the third MPR.

[0152] In one possible implementation, the value of the second MPR can be determined according to the linear scaling principle. For example, the second MPR is X times the third MPR, where X is the ratio of the second value of the out-of-band index to the third value of the out-of-band index; or, for another example, the second MPR is Y times the first MPR, where Y is the ratio of the second value of the out-of-band index to the first value of the out-of-band index.

[0153] In another possible implementation, the network device may also indicate the correspondence between a second value of an out-of-band indicator and a second MPR or a second power boost value, thereby enabling the terminal device to determine the second MPR.

[0154] Scenario 3: The second value of the out-of-band indicator is equal to the third value of the out-of-band indicator. In this case, the second MPR is equal to the third MPR.

[0155] Combining the above three cases, we can see that the second MPR is less than or equal to the third MPR. The change in the second MPR compared to the third MPR is denoted as ΔP. d Compared to the third MPR, the terminal device's transmit power can be reduced by ΔP. d .

[0156] Optionally, the terminal device determines its maximum transmit power based on a second MPR or a second power boost value. As described above regarding the maximum transmit power of the terminal device, the terminal device operates within a predefined power range P. CMAX,L,f,c ~P CMAX,H,f,c The P value at the current time is determined internally. CMAX,f,c The value of MPR. The change in MPR ΔP d It affects the lower limit P of the maximum transmit power. CMAX,L,f,c In other words, the terminal device can be based on the change in MPR, ΔP d Determine the lower limit of the maximum transmit power. Second power boost value (denoted as ΔP) u This affects the upper limit P of the maximum transmit power. CMAX,H,f,c In other words, terminal devices can be based on ΔP u Determine the upper limit P of the maximum transmit power. CMAX,H,f,c After determining the lower and upper limits of the maximum transmit power, the terminal device can determine its maximum transmit power between these two limits.

[0157] The change ΔP based on MPR d The lower limit P of the maximum transmit power of the terminal device CMAX,L,f,c The following formula (3) is satisfied:

[0158] P CMAX,L,f,c =min{P EMAX,c -ΔT C,c ,(P PowerClass -ΔP PowerClass +ΔP PowerBoost )-max(max(MPR c -ΔP d +ΔMPR c A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS P-MPR c )} (3)

[0159] It is understandable that the parameter MPR in formula (3) c Corresponding to the third MPR, MPR c -ΔP d The result is the second MPR, which means a smaller backtracking ΔP compared to the third MPR. d This reduces power backoff and increases the lower limit of maximum transmit power. Let the second MPR be P2, and the MPR in formula (3) c -ΔP d It can be replaced as a whole with P2.

[0160] Alternatively, the lower limit P of the maximum transmit power of the terminal device. CMAX,L,f,c It still satisfies the above formula (1), but the parameter MPR in formula (1) is different. c Corresponding to the second MPR.

[0161] Based on the change in MPR ΔP, the upper limit of the maximum transmit power P of the terminal device. CMAX,H,f,c The following formula (4) is satisfied:

[0162] P CMAX,H,f,c =min{P EMAX,c P PowerClass +ΔP u -ΔP PowerClass +ΔP PowerBoost} (4)

[0163] As can be seen from formula (4), the theoretical upper bound P of the terminal device's transmit power is... PowerClass Based on this, raise it by ΔP u This increases the upper limit of the maximum transmission power.

[0164] Optionally, the terminal device determines its maximum transmit power based on a second MPR or a second power boost value, including: determining the maximum transmit power based on the second MPR or the second power boost value, and one or more of the following: the configured frequency band of the terminal device, the configured bandwidth of the terminal device, the power level supported by the terminal device, and the RB allocation method or modulation method.

[0165] Optionally, the configuration frequency band of the terminal device belongs to FR1. Optionally, the configuration frequency band of the terminal device belongs to the high-frequency band of FR1.

[0166] It should be noted that the embodiments of this application describe n104 as belonging to FR 1 as an example. The embodiments of this application do not exclude the possibility that n104 will be defined as a frequency band in other frequency ranges in future protocols. For example, n104 may be defined as a frequency band within frequency range 3 (FR 3).

[0167] In one possible implementation, the first value of the out-of-band indicator corresponds to a first adjacent frequency range and / or a second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is a frequency range in a lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is a frequency range in a higher frequency direction adjacent to the configuration bandwidth.

[0168] It is understood that this configured bandwidth has a frequency range. The lower frequency direction refers to the side closer to the lower limit within this configured bandwidth, and the higher frequency direction refers to the side closer to the upper limit within the configured bandwidth. For example, if the configured bandwidth is the bandwidth from 6.6GHz to 6.7GHz within frequency band n104 (6.425GHz~7.125GHz), then the lower frequency direction refers to the side closer to 6.6GHz, and the higher frequency range refers to the side closer to 6.7GHz. The first adjacent frequency range is the frequency range adjacent to the configured bandwidth that is closer to 6.6GHz, for example, the frequency range of 6.5GHz~6.6GHz. The second adjacent frequency range is the frequency range adjacent to the configured bandwidth that is closer to 6.7GHz, for example, the frequency range of 6.7GHz~6.8GHz.

[0169] Based on the first value of the out-of-band indicator corresponding to the first MPR, if the first value of the out-of-band indicator corresponds to the first adjacent frequency range of the terminal device's configured bandwidth, it means that if the out-of-band indicator of the first adjacent frequency range can be relaxed to the first value, it can support the regression of the terminal device's transmit power to the first MPR. In other words, in order to support the regression of the terminal device's transmit power to the first MPR, it is necessary to relax the out-of-band indicator of the first adjacent frequency range to the first value. Correspondingly, the second value of the allowed out-of-band indicator indicated by the network device corresponds to the first adjacent frequency range of the terminal device's configured bandwidth, indicating that it is permissible to relax the out-of-band indicator of the first adjacent frequency range to the second value.

[0170] Based on the first value of the out-of-band indicator corresponding to the first MPR, if the first value of the out-of-band indicator corresponds to the second adjacent frequency range of the terminal device's configured bandwidth, it means that if the out-of-band indicator of the second adjacent frequency range can be relaxed to the first value, it can support the regression of the terminal device's transmit power to the first MPR. In other words, in order to support the regression of the terminal device's transmit power to the first MPR, the out-of-band indicator of the first adjacent frequency range needs to be relaxed to the first value. Accordingly, the second value of the allowed out-of-band indicator indicated by the network device corresponds to the first adjacent frequency range of the terminal device's configured bandwidth, indicating that it is permissible to relax the out-of-band indicator of the first adjacent frequency range to the second value.

[0171] Based on the first value of the out-of-band indicator corresponding to the first MPR, if the first value of the out-of-band indicator corresponds to the first adjacent frequency range and the second adjacent frequency range of the terminal device's configured bandwidth, it means that if the out-of-band indicators of the first and second adjacent frequency ranges can be relaxed to the first value, then it is possible to support the regression of the terminal device's transmit power to the first MPR. In other words, to support the regression of the terminal device's transmit power to the first MPR, it is necessary to relax the out-of-band indicator of the first adjacent frequency range of the configured bandwidth to the first value. Correspondingly, the second value of the allowed out-of-band indicator indicated by the network device corresponds to the first and second adjacent frequency ranges of the terminal device's configured bandwidth, indicating that it is permissible to relax the out-of-band indicators of the first and second adjacent frequency ranges to the second value.

[0172] Optionally, if certain conditions are met, the terminal device determines its maximum transmit power based on a second MPR or a second power boost value. This can be understood as follows: if the condition is met, the second MPR and the second power boost value are valid; that is, the terminal device can determine its maximum transmit power based on the second MPR or the second power boost value. If the condition is not met, the second MPR or the second power boost value is invalid; that is, the terminal device performs power back-off according to the third MPR corresponding to the third value of the out-of-band index as specified in the current protocol, thereby determining its maximum transmit power. This condition is related to the position of the bandwidth scheduled by the network device for the terminal device within the configured bandwidth; the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth.

[0173] Optionally, if the frequency direction of the bandwidth scheduled by the network device for the terminal device in the configured bandwidth is consistent with the frequency direction of the adjacent frequency range corresponding to the first or second value of the out-of-band index, the second MPR or the second power boost value is valid; otherwise, the second MPR or the second power boost value is invalid.

[0174] Optionally, the condition is any one of the following: the first value of the out-of-band indicator corresponds to the first adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth that is close to the first adjacent frequency range (denoted as condition 1); or, the first value of the out-of-band indicator corresponds to the second adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth that is close to the second adjacent frequency range (denoted as condition 2); or, the first value of the out-of-band indicator corresponds to the first adjacent frequency range and the second adjacent frequency range (denoted as condition 3).

[0175] Regarding condition 1 above, it can be understood that the terminal device indicates that, when the out-of-band parameters of the first adjacent frequency range of the configured bandwidth are relaxed to a first value, it can support reverting the terminal device's transmit power back to a first MPR or increasing the first power boost value. Correspondingly, the network device indicates that it is allowed to relax the out-of-band parameters of the first adjacent frequency range of the configured bandwidth to a second value.

[0176] If the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth close to the first adjacent frequency range, it means that the signal transmission of the terminal device will cause more interference to the first adjacent frequency range. What needs to be paid attention to is the out-of-band index of the first adjacent frequency range. In this case, the frequency direction of the position of the bandwidth scheduled by the network device for the terminal device in the configured bandwidth is consistent with the frequency direction of the adjacent frequency range corresponding to the first or second value of the out-of-band index. This frequency direction is the lower frequency direction of the configured bandwidth. Therefore, the second MPR or the second power boost value is valid, and the terminal device can determine the maximum transmit power of the terminal device based on the second MPR or the second power boost value.

[0177] If the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth close to the second adjacent frequency range, it means that the terminal device's signal transmission will cause more interference to the second adjacent frequency range. What needs to be paid attention to is the out-of-band index of the second adjacent frequency range. In this case, the frequency direction of the position of the bandwidth scheduled by the network device for the terminal device in the configured bandwidth is inconsistent with the frequency direction of the adjacent frequency range corresponding to the first or second value of the out-of-band index. Therefore, the second MPR or the second power boost value is invalid. The terminal device performs power back-off according to the third MPR corresponding to the third value of the out-of-band index as specified in the current protocol, thereby determining the maximum transmit power of the terminal device.

[0178] Condition 2 above can be understood as follows: the terminal device indicates that, when the out-of-band parameters of the second adjacent frequency range of the configured bandwidth are relaxed to the first value, it can support reverting the terminal device's transmit power back to the first MPR or increasing the first power boost value. Correspondingly, the network device indicates that it allows the out-of-band parameters of the first adjacent frequency range of the configured bandwidth to be relaxed to the second value.

[0179] If the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth close to the second adjacent frequency range, it means that the terminal device's signal transmission will cause more interference to the second adjacent frequency range. What needs to be paid attention to is the out-of-band index of the second adjacent frequency range. In this case, the frequency direction of the position of the bandwidth scheduled by the network device for the terminal device in the configured bandwidth is consistent with the frequency direction of the adjacent frequency range corresponding to the first or second value of the out-of-band index. This frequency direction is the higher frequency direction of the configured bandwidth. Therefore, the second MPR or the second power boost value is valid, and the terminal device can determine the maximum transmit power of the terminal device based on the second MPR or the second power boost value.

[0180] If the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth close to the first adjacent frequency range, it means that the signal transmission of the terminal device will cause more interference to the first adjacent frequency range. What needs to be paid attention to is the out-of-band index of the first adjacent frequency range. In this case, the frequency direction of the position of the bandwidth scheduled by the network device for the terminal device in the configured bandwidth is inconsistent with the frequency direction of the adjacent frequency range corresponding to the first or second value of the out-of-band index. Therefore, the second MPR or the second power boost value is invalid. The terminal device performs power back-off according to the third MPR corresponding to the third value of the out-of-band index as specified in the current protocol, thereby determining the maximum transmit power of the terminal device.

[0181] Regarding condition 3 above, it can be understood that the terminal device indicates that, when the out-of-band indicators of the first and second adjacent frequency ranges of the configured bandwidth are relaxed to a first value, it can support the regression of the terminal device's transmit power to a first MPR or an increase of a first power boost value. In other words, when the out-of-band indicators of the adjacent frequency ranges closest to either side of the configured bandwidth are relaxed to a first value, it can support the regression of the terminal device's transmit power to a first MPR or an increase of a first power boost value. Correspondingly, the network device indicates that the out-of-band indicators of the first and second adjacent frequency ranges of the configured bandwidth can be relaxed to a second value. Combining the above descriptions of conditions 1 and 2, in this case, regardless of whether the bandwidth scheduled by the network device for the terminal device is close to the first or second adjacent frequency range, the frequency direction of the position of the bandwidth scheduled by the network device for the terminal device within the configured bandwidth is consistent with the frequency direction of the adjacent frequency range corresponding to the first or second value of the out-of-band indicator. Therefore, the second MPR or the second power boost value is valid, and the terminal device can determine its maximum transmit power based on the second MPR or the second power boost value.

[0182] In the embodiments described above, the terminal device and the network device interact via the air interface to flexibly indicate the scope for relaxing out-of-band metrics, aiming to improve the transmit power of the terminal device. In other possible implementations, the values ​​allowing for relaxation of out-of-band metrics, as well as the corresponding MPR values, can be pre-configured through protocol pre-definition.

[0183] As an example, for band n104, the ACLR of PC 3 can be relaxed to 26dB, as shown in Table 8.

[0184] Table 8

[0185] Comparing Table 8 and Table 4 (the current ACLR tables in the protocol), we can see that for PC 3, the ACLR requirement has been relaxed from 30dB to 26dB, a reduction of 4dB. Optionally, the ACLR values ​​for other power levels can also have corresponding relaxation margins. For example, PC 2 is also relaxed / reduced by 4dB, from 31dB to 27dB; PC 1.5 is also relaxed / reduced by 4dB, from 31dB to 27dB; and PC 1 is also relaxed / reduced by 4dB, from 37dB to 33dB.

[0186] It is understandable that Table 8 uses the ACLR corresponding to PC 3 relaxed to 26dB as an example. This application embodiment does not limit the specific value of the relaxed ACLR, but the relaxed value should be less than the value specified in the current protocol.

[0187] As an example, for band n104, the 0–5 MHz range outside the configuration bandwidth shown in Table 5 (i.e., the OBB range is 0–5 MHz) can be relaxed by 3 dBm, as shown in Table 9, for example.

[0188] Table 9

[0189] Comparing Table 9 and Table 5 (the SEM table in the current protocol), we can see that, taking a configured bandwidth of 20MHz as an example, for the 0-1MHz range outside the configured bandwidth (i.e., the OBB range is 0-1MHz), the SEM requirement has been relaxed from -13dBm to -10dBm, a relaxation / increase of 3dBm; for the 1-5MHz range outside the configured bandwidth (i.e., the OBB range is 1-5MHz), the SEM requirement has been relaxed from -10dBm to -7dBm, a relaxation / increase of 3dBm.

[0190] It is understandable that Table 9 uses the example of relaxing the bandwidth by 3dBm for 0-5MHz (i.e., OBB range of 0-5MHz) outside the configured bandwidth. This application does not limit the specific value of the relaxed SEM corresponding to different OBB ranges, but the relaxed value should be less than the value specified in the current protocol.

[0191] Based on the relaxed out-of-band indicators mentioned above, the MPR in the MPR table in Table 7 should also be reduced accordingly, for example, by 1 dB. It should be noted that items that are less than 1 dB can be changed to 0 dB, as shown in Table 10.

[0192] Table 10

[0193] It is understandable that Table 9 uses a 1dB reduction in MPR as an example. This application does not limit the specific value of the relaxed MPR, but the relaxed value should be less than the value specified in the current agreement.

[0194] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0195] The methods provided in the embodiments of this application above are described using terminal devices or network devices as examples. In this application, each embodiment can be implemented independently or in combination based on certain inherent connections; in each embodiment, different implementation methods can be implemented in combination or independently. To achieve the functions of the methods provided in the embodiments of this application above, the steps executed by the terminal device or network device can be implemented by the terminal device or network device itself, or by different functional entities constituting the terminal device or network device. To achieve the functions of the methods provided in the embodiments of this application above, the terminal device or network device may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0196] The communication method according to an embodiment of this application has been described in detail above with reference to FIG3. The communication device according to an embodiment of this application will be described in detail below with reference to FIG4 and FIG5.

[0197] As shown in Figure 4, the communication device 400 includes a transceiver module 410 and a processing module 420. The transceiver module 410 can also be referred to as a communication interface or a communication module.

[0198] The device 400 can be used to perform the actions performed by the terminal device or network device in the above method embodiments. Alternatively, the device 400 can be a component (e.g., a chip) configured in the terminal device or network device. The processing module 420 is used to perform processing-related operations of the terminal device or network device in the above method embodiments. The transceiver module 410 is used to perform receiving and transmitting-related operations of the terminal device or network device in the above method embodiments.

[0199] Optionally, the transceiver module 410 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0200] It should be noted that device 400 may include a transmitting module but not a receiving module. Alternatively, device 400 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by device 400 includes both transmitting and receiving actions.

[0201] Optionally, the device 400 is used to perform the actions performed by the terminal device or network device in the embodiment shown in FIG3 above. For details, please refer to the relevant description in the embodiment shown in FIG3 above, which will not be repeated here.

[0202] Optionally, the device 400 may further include a storage module, which can be used to store data and / or to store computer programs or instructions. The processing module 420 can read the computer programs / instructions and / or data in the storage module so that the device 400 can implement the above-described method embodiments.

[0203] When device 400 is used to implement the functions of the terminal device in the method embodiment shown in FIG3, transceiver module 410 is used to: send first information, the first information being used to indicate the correspondence between a first MPR or a first power boost value and a first value of an out-of-band indicator, the out-of-band indicator being used to limit interference to frequency ranges adjacent to the configured bandwidth of the terminal device; and receive second information, the second information being used to indicate a second value of an allowed out-of-band indicator, the second value of the out-of-band indicator being greater than or equal to the first value of the out-of-band indicator; processing module 420 is used to: determine a second MPR or a second power boost value corresponding to the second value of the out-of-band indicator.

[0204] Optionally, the first value of the out-of-band indicator corresponds to the first adjacent frequency range and / or the second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is the frequency range in the lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is the frequency range in the higher frequency direction adjacent to the configuration bandwidth.

[0205] Optionally, the method further includes: determining the maximum transmit power of the terminal device based on a second MPR or a second power boost value, provided that certain conditions are met.

[0206] Optionally, the condition is any one of the following: the first value of the out-of-band indicator corresponds to a first adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the bandwidth within the configured bandwidth that is close to the first adjacent frequency range; the first value of the out-of-band indicator corresponds to a second adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth that is close to the second adjacent frequency range; or, the first value of the out-of-band indicator corresponds to the first adjacent frequency range and the second adjacent frequency range.

[0207] Optionally, the maximum transmit power of the terminal device is determined based on the second MPR or the second power boost value, including: determining the maximum transmit power of the terminal device based on the second MPR or the second power boost value, and one or more of the following: the configured frequency band of the terminal device, the configured bandwidth of the terminal device, the power level supported by the terminal device, the RB allocation method or modulation method.

[0208] Optionally, the terminal device is configured to operate in FR 1 frequency band.

[0209] When device 400 is used to implement the function of network device in the method embodiment shown in FIG3, transceiver module 410 is used to: receive first information, the first information being used to indicate the correspondence between a first MPR or a first power boost value and a first value of an out-of-band indicator, the out-of-band indicator being used to limit interference to frequency ranges adjacent to the configured bandwidth of the terminal device; and send second information, the second information being used to indicate a second value of an allowed out-of-band indicator, the second value of the out-of-band indicator being greater than or equal to the first value of the out-of-band indicator.

[0210] Optionally, the first value of the out-of-band indicator corresponds to the first adjacent frequency range and / or the second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is the frequency range in the lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is the frequency range in the higher frequency direction adjacent to the configuration bandwidth.

[0211] Optionally, the terminal device is configured to operate in FR 1 frequency band.

[0212] It is understood that the module division in the above-described device is merely a logical functional division. Each function can correspond to a functional module, or two or more functions can be integrated into one functional module. In actual implementation, all or some modules can be integrated into a single physical entity, or they can be distributed across different physical entities. Furthermore, the aforementioned functional units can be implemented in hardware, software, or a combination of both. Whether a function is executed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0213] For a more detailed description of the transceiver module 410 and the processing module 420, please refer to the relevant description in the method embodiment shown in Figure 3, which will not be repeated here.

[0214] Figure 5 is a schematic block diagram of another communication device 500 provided in an embodiment of this application. As shown in Figure 5, the device 500 includes one or more processors 510 and an interface circuit 520. The one or more processors 510 and the interface circuit 520 are coupled to each other. It is understood that the interface circuit 520 can be a transceiver or an input / output interface. Optionally, the device 500 may also include a memory 530 for storing instructions executed by the processor 510, or for storing input data required by the processor 510 to execute instructions, or for storing data generated after the processor 510 executes instructions. Sometimes, the interface circuit 520 can also be understood as part of the one or more processors 510, in which case the device 500 includes the one or more processors 510.

[0215] The one or more processors 510 and memory 530 can be configured separately or integrated, and this application does not limit this.

[0216] When the device 500 is used to implement the method shown in FIG3, the one or more processors 510 are used to implement the functions of the processing module 420, and the interface circuit 520 is used to implement the functions of the transceiver module 410.

[0217] When the aforementioned device 500 is a chip applied to a terminal device, the chip of the terminal device implements the functions of the terminal device in the above method embodiments. The chip of the terminal device receives information from the network device, which can be understood as the information being first received by other modules (such as an RF module or antenna) in the terminal device, and then sent to the chip of the terminal device by these modules. The chip of the terminal device sends information to the network device, which can be understood as the information being first sent to other modules (such as an RF module or antenna) in the terminal device, and then sent to the network device by these modules.

[0218] When the aforementioned device 500 is a chip applied to a network device, the chip of the network device implements the functions of the network device in the above method embodiments. The chip of the network device receives information from the terminal device, which can be understood as the information being first received by other modules (such as radio frequency modules or antennas) in the network device, and then sent to the chip of the network device by these modules. The chip of the network device sends information to the terminal device, which can be understood as the information being first sent to other modules (such as radio frequency modules or antennas) in the network device, and then sent to the terminal device by these modules.

[0219] Optionally, the device 500 also includes a power supply circuit for supplying power to the device 500.

[0220] Figure 6 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. As shown in Figure 6, the terminal device 600 can be applied to the system shown in Figure 1 to perform the functions of the terminal device in the method embodiment shown in Figure 3. As shown, the terminal device 600 includes a processor 601 and a transceiver 602. Optionally, the terminal device 600 also includes a memory 603. The processor 601, transceiver 602, and memory 603 can communicate with each other through internal connection channels to transmit control and / or data signals. The memory 603 is used to store computer programs, and the processor 601 is used to call and run the computer programs from the memory 603 to control the transceiver 602 to transmit and receive signals. Optionally, the terminal device 600 may also include an antenna 604 for transmitting uplink data or uplink control signaling output by the transceiver 602 via wireless signals.

[0221] The processor 601 and memory 603 described above can be combined into a single processing device. The processor 601 executes the program code stored in the memory 603 to achieve the above functions. In specific implementations, the memory 603 can be integrated into the processor 601 or independent of the processor 601. The processor 601 can correspond to the processing module in Figure 4 or the processor in Figure 5.

[0222] The transceiver 602 described above can correspond to the transceiver module in Figure 4 or the communication interface in Figure 5. The transceiver 602 may include a receiver (or receiver circuit) and a transmitter (or transmitter circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0223] It should be understood that the terminal device 600 shown in Figure 6 can implement the various processes involving the terminal device in the method embodiment shown in Figure 3. The operation and / or function of each module in the terminal device 600 are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment; to avoid repetition, detailed descriptions are appropriately omitted here.

[0224] The processor 601 described above can be used to execute the actions implemented internally by the terminal device as described in the preceding method embodiments, while the transceiver 602 can be used to execute the actions described in the preceding method embodiments of sending data from the terminal device to the network device or receiving data from the network device. For details, please refer to the descriptions in the preceding method embodiments; they will not be repeated here.

[0225] Optionally, the terminal device 600 may also include a power supply 605 for providing power to various devices or circuits in the terminal device.

[0226] In addition, to further enhance the functionality of the terminal device, the terminal device 600 may also include one or more of the following: an input unit 606, a display unit 607, an audio circuit 608, a camera 609, and a sensor 610. The audio circuit may also include a speaker 608a, a microphone 608b, etc.

[0227] Figure 7 is a schematic diagram of the network device provided in an embodiment of this application, such as a schematic diagram of a base station. The base station 700 can be applied to the system shown in Figure 1, performing the functions of the network device in the method embodiment shown in Figure 3. As shown, the base station 700 may include one or more of the following: one or more (DU+RU) 710s and one or more CUs 720s. The CU 720 can communicate with the next-generation core (NG core). The DU may include at least one antenna 711, at least one radio frequency unit 712, at least one processor 713, and at least one memory 714. The DU is mainly used for transmitting and receiving radio frequency signals, converting radio frequency signals to baseband signals, and performing some baseband processing. The CU 720 may include at least one processor 722 and at least one memory 721. The CU 720 and the DU can communicate through an interface. The CP interface can be Fs-C, such as F1-C, and the UP interface can be Fs-U, such as F1-U. The DU and RU can cooperate to implement the functions of the physical (PHY) layer. One DU can be connected to one or more RUs. The functions of the DU and RU can be configured in various ways depending on the design. For example, the DU can be configured to implement baseband functions, and the RU can be configured to implement mid-RF functions. As another example, the DU can be configured to implement higher-level functions in the PHY layer, and the RU can be configured to implement lower-level and RF functions in the PHY layer. Higher-level functions in the PHY layer may include a portion of the PHY layer's functions that are closer to the medium access control (MAC) layer, while lower-level functions in the PHY layer may include another portion of the PHY layer's functions that are closer to the mid-RF side.

[0228] The CU 720 is mainly used for baseband processing and base station control. The DU and CU 720 can be physically installed together or separately, i.e., a distributed base station. The CU 720 is the control center of the base station, corresponding to the processing module in Figure 4 or the processor in Figure 5, and can also be called a processing unit, mainly used to complete baseband processing functions. For example, the CU 720 can be used to control the base station to execute the operation procedures related to network devices in the above method embodiments.

[0229] Specifically, baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the Packet Data Convergence Protocol (PDCP) layer and above are set in the CU, while the functions of protocol layers below PDCP, such as the Radio Link Control (RLC) layer and the MAC layer, are set in the DU. Alternatively, the CU may implement the functions of the RRC and PDCP layers, while the DU may implement the functions of the RLC, MAC, and PHY layers.

[0230] Alternatively, the base station 700 may include one or more RUs, one or more DUs, and one or more CUs. A DU may include at least one processor 713 and at least one memory 714, an RU may include at least one antenna 711 and at least one radio frequency unit 712, and a CU may include at least one processor 722 and at least one memory 721.

[0231] In one example, the CU 720 can be composed of one or more boards. These boards can collectively support a single access-indicating radio access network (such as a 5G network), or they can each support radio access networks with different access standards (such as LTE, 5G, or other networks). The memory 721 and processor 722 can serve one or more boards. That is, each board can have its own memory and processor, or multiple boards can share the same memory and processor. Furthermore, each board can also have necessary circuitry. Similarly, the DU can be composed of one or more boards. These boards can collectively support a single access-indicating radio access network (such as a 5G network), or they can each support radio access networks with different access standards (such as LTE, 5G, or other networks). The memory 714 and processor 713 can serve one or more boards. That is, each board can have its own memory and processor, or multiple boards can share the same memory and processor. Furthermore, each board can also have necessary circuitry.

[0232] It should be understood that the base station 700 shown in Figure 7 can implement the various processes involving the network device in the method embodiment shown in Figure 3. The operation and / or function of each module in the base station 700 are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment; to avoid repetition, detailed descriptions are appropriately omitted here.

[0233] It should be understood that the base station 700 shown in Figure 7 is only one possible architecture for network devices and should not be construed as limiting this application in any way. The method provided in this application can be applied to network devices with other architectures, such as network devices including CU, DU, and AAU. This application does not limit the specific architecture of the network device.

[0234] It should be understood that Figure 7 is merely an example and not a limitation, and network devices may not depend on the structure shown in Figure 7. For example, a network device may also include an AAU, a CU and / or a DU, or a network device may include a BBU and an adaptive radio unit (ARU). This application does not limit this.

[0235] The aforementioned CU and / or DU can be used to perform the actions implemented internally by the network device as described in the preceding method embodiments, while the AAU can be used to perform the actions described in the preceding method embodiments whereby the network device sends data to the terminal device or receives data from the terminal device. Please refer to the descriptions in the preceding method embodiments for details, which will not be repeated here.

[0236] The above-described method embodiments can be applied to a processor, or implemented by a processor. A processor may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed through integrated logic circuits in the processor's hardware or through software instructions.

[0237] The aforementioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0238] The steps of the method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can reside in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0239] The memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0240] This application also provides a chip system including at least one processor for supporting the implementation of the functions of the terminal or network device involved in any of the above method embodiments, such as sending, receiving, or processing information involved in the above methods.

[0241] In one possible design, the chip system also includes a memory for storing computer program instructions and data, which may be located inside or outside the processor.

[0242] The chip system can consist of chips or include chips and other discrete components.

[0243] This application also provides a computer program product, which includes a computer program (also referred to as code or instructions), wherein when the computer program is run, the method executed by the terminal device in the embodiment shown in FIG3 is executed, or the method executed by the network device is executed.

[0244] This application also provides a computer-readable storage medium storing a computer program (also referred to as code or instructions). When the computer program is run, the method executed by the terminal device in the embodiment shown in FIG3 is executed, or the method executed by the network device is executed.

[0245] This application also provides a communication system, which includes the aforementioned terminal equipment and network equipment.

[0246] The methods provided in the above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, they can be implemented, in whole or in part, as a computer program product. This computer program product may include one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic disks), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0247] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0248] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0249] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0250] The unit described as a separate component may or may not be physically separate. The component shown as a unit may or may not be a physical unit; that is, it may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0251] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0252] If this function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, or part of it, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0253] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

Claims

1. A communication method characterized by comprising: include: Send first information, the first information being used to indicate the correspondence between a first maximum power back-off (MPR) or a first power boost value and a first value of an out-of-band indicator, the out-of-band indicator being used to limit interference to frequency ranges adjacent to the configured bandwidth of the terminal device; Receive second information, the second information being used to indicate a second value of the allowed out-of-band indicator; Determine the second MPR or second power boost value corresponding to the second value of the out-of-band index.

2. The method of claim 1, wherein, The first value of the out-of-band index corresponds to the first adjacent frequency range and / or the second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is the frequency range in a lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is the frequency range in a higher frequency direction adjacent to the configuration bandwidth.

3. The method of claim 2, wherein, The method further includes: Under certain conditions, the maximum transmit power of the terminal device is determined based on the second MPR or the second power boost value.

4. The method of claim 3, wherein, The condition is any one of the following: The first value of the out-of-band indicator corresponds to the first adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the bandwidth within the configured bandwidth that is close to the first adjacent frequency range. The first value of the out-of-band indicator corresponds to the second adjacent frequency range, and the bandwidth scheduled by the network device for the terminal device is a portion of the configured bandwidth closest to the second adjacent frequency range; or... The first value of the out-of-band index corresponds to the first adjacent frequency range and the second adjacent frequency range.

5. The method of claim 3 or 4, wherein, Determining the maximum transmit power of the terminal device based on the second MPR or the second power boost value includes: The maximum transmit power of the terminal device is determined based on the second MPR or the second power boost value, and one or more of the following: The configuration frequency band of the terminal device, the configuration bandwidth of the terminal device, the power level supported by the terminal device, and the resource block (RB) allocation method or modulation method.

6. The method of any one of claims 1 to 5, wherein, The configured frequency band of the terminal device belongs to frequency range 1.

7. A communication method characterized by comprising: include: Receive first information, the first information being used to indicate the correspondence between a first MPR or a first power boost value and a first value of an out-of-band indicator, the out-of-band indicator being used to limit interference to the frequency range adjacent to the configured bandwidth of the terminal device; Send a second message, which indicates a second value of the out-of-band indicator that is permitted.

8. The method of claim 7, wherein, The first value of the out-of-band index corresponds to the first adjacent frequency range and / or the second adjacent frequency range of the configuration bandwidth of the terminal device. The first adjacent frequency range is the frequency range in a lower frequency direction adjacent to the configuration bandwidth, and the second adjacent frequency range is the frequency range in a higher frequency direction adjacent to the configuration bandwidth.

9. The method of claim 7 or 8, wherein, The configured frequency band of the terminal device belongs to frequency range 1.

10. A communications device, characterized by It includes modules for implementing the method as described in any one of claims 1 to 6, or modules for implementing the method as described in any one of claims 7 to 9.

11. A communications device, characterized by The device includes a processor coupled to a memory for storing programs or instructions that, when executed by the processor, cause the method as claimed in any one of claims 1 to 6 to be performed, or cause the method as claimed in any one of claims 7 to 9 to be performed.

12. A computer-readable storage medium, characterized in that, Used to store computer programs that, when run on a computer, cause the method as described in any one of claims 1 to 6 to be performed, or cause the method as described in any one of claims 7 to 9 to be performed.

13. A computer program product, characterised in that, include: A computer program or instruction that, when executed, causes the method as described in any one of claims 1 to 6 to be performed, or causes the method as described in any one of claims 7 to 9 to be performed.

14. A communication system, characterized by It includes a terminal device and a network device, wherein the terminal device is used to perform the method as described in any one of claims 1 to 6, and the network device is used to perform the method as described in any one of claims 7 to 9.

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