Communication method and communication device

Abstract

Provided are a communication method and a communication device. The method comprises: a terminal device determining the maximum power reduction value corresponding to a first RB, wherein the first RB is an external RB or an edge RB included in a first channel bandwidth allocated by a network device for the terminal device, and the maximum power reduction value corresponding to the first RB comprises a first maximum power reduction value and / or a second maximum power reduction value, the first maximum power reduction value being less than the second maximum power reduction value.

Description

Communication method and communication device

[0001] This application claims priority to PCT Patent Application No. PCT / CN2024 / 144324 entitled "Communication method and communication device" and filed on December 31, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of communication, and more particularly, to a communication method and a communication device. BACKGROUND

[0003] In related technologies, the maximum power reduction (MPR) of a terminal device in an external resource block (RB) region or an edge RB region in a channel bandwidth is large, which reduces the maximum transmit power of the terminal device and thus reduces the uplink coverage of the terminal device. SUMMARY

[0004] The present application provides a communication method and a communication device. Each aspect of the present application is described below.

[0005] In a first aspect, a communication method is provided, including: receiving, by a terminal device, first information sent by a network device, the first information being used to determine a maximum power reduction value corresponding to a first RB, the first RB being an external RB or an edge RB included in a first channel bandwidth allocated by the network device to the terminal device, the maximum power reduction value corresponding to the first RB including a first maximum power reduction value and / or a second maximum power reduction value, the first maximum power reduction value being smaller than the second maximum power reduction value.

[0006] In a second aspect, a communication method is provided, including: sending, by a network device, first information to a terminal device, the first information being used to determine a maximum power reduction value corresponding to a first RB, the first RB being an external RB or an edge RB included in a first channel bandwidth allocated by the network device to the terminal device, the maximum power reduction value corresponding to the first RB including a first maximum power reduction value and / or a second maximum power reduction value, the first maximum power reduction value being smaller than the second maximum power reduction value.

[0007] Thirdly, a communication device is provided, the communication device being a terminal device, the communication device comprising: a communication module, configured to receive first information sent by a network device, the first information being configured to determine a maximum power backoff value corresponding to a first RB, the first RB being an external RB or an edge RB including a first channel bandwidth allocated by the network device to the terminal device, the maximum power backoff value corresponding to the first RB including a first maximum power backoff value and / or a second maximum power backoff value, the first maximum power backoff value being less than the second maximum power backoff value.

[0008] Fourthly, a communication device is provided, the communication device being a network device, the communication device comprising: a communication module, configured to send first information to a terminal device, the first information being configured to determine a maximum power backoff value corresponding to a first RB, the first RB being an external RB or an edge RB including a first channel bandwidth allocated by the network device to the terminal device, the maximum power backoff value corresponding to the first RB including a first maximum power backoff value and / or a second maximum power backoff value, the first maximum power backoff value being less than the second maximum power backoff value.

[0009] Fifthly, a communication device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals, so that the communication device performs the method as described in the first or second aspect.

[0010] A sixth aspect provides an apparatus including a processor for calling a program from a memory to cause the apparatus to perform the method as described in the first or second aspect.

[0011] A seventh aspect provides a chip including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in the first or second aspect.

[0012] Eighthly, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method as described in the first or second aspect.

[0013] Ninth aspect, a computer program product is provided, including a program that causes a computer to perform the method as described in the first or second aspect.

[0014] In a tenth aspect, a computer program is provided that causes a computer to perform the method as described in the first or second aspect.

[0015] In this embodiment, a first maximum power backoff value (smaller maximum power backoff value) and a second maximum power backoff value (larger maximum power backoff value) are set for the external RBs or edge RBs included in the channel bandwidth of the terminal device. Therefore, even if the terminal device performs uplink transmission based on external RBs or edge RBs, it has the opportunity to select a smaller maximum power backoff value, thereby helping to improve the uplink coverage of the terminal device. Attached Figure Description

[0016] Figure 1 is an example architecture diagram of a wireless communication system to which embodiments of this application can be applied.

[0017] Figure 2 is a schematic diagram of the format of the power margin report.

[0018] Figure 3A is a flowchart illustrating a communication method provided in an embodiment of this application.

[0019] Figure 3B is a flowchart illustrating a communication method provided in another embodiment of this application.

[0020] Figure 4 is an example diagram of the structure of the resource segment provided in an embodiment of this application.

[0021] Figure 5 is another example diagram of the structure of the resource segment provided in the embodiments of this application.

[0022] Figure 6 is an example diagram showing the positional relationship between the resource set and frequency band provided in the embodiments of this application.

[0023] Figure 7 is another example of the positional relationship between the resource set and frequency band provided in the embodiments of this application.

[0024] Figure 8 is a schematic diagram of the positional relationship of different types of RB regions provided in the embodiments of this application.

[0025] Figure 9 is a schematic diagram of the positional relationship between the virtual carrier and the real carrier provided in the embodiments of this application.

[0026] Figure 10 is a schematic diagram of the location of the internal RB region provided in an embodiment of this application.

[0027] Figure 11 is a schematic diagram of the positional relationship of different types of RB regions provided in the embodiments of this application.

[0028] Figure 12 is a schematic diagram of the positional relationship of different types of RB regions provided in another embodiment of this application.

[0029] Figure 13 is a schematic diagram showing the positional relationship between the extended resource segment and the configured resource segment provided in an embodiment of this application.

[0030] Figure 14 is a schematic diagram showing the positional relationship between the extended resource segment and the configured resource segment provided in another embodiment of this application.

[0031] Figure 15 is a schematic diagram of the location of the internal RB region provided in an embodiment of this application.

[0032] Figure 16 is a schematic diagram of the positional relationship of different types of RB regions provided in the embodiments of this application.

[0033] Figure 17 is a schematic diagram of the positional relationship of different types of RB regions provided in another embodiment of this application.

[0034] Figure 18 is a schematic diagram of the positional relationship of different types of RB regions provided in another embodiment of this application.

[0035] Figure 19 is an example diagram of the format of the power margin report provided in the embodiments of this application.

[0036] Figure 20 is another example diagram of the format of the power margin report provided in the embodiments of this application.

[0037] Figure 21 is a flowchart illustrating the communication method provided in an embodiment of this application.

[0038] Figure 22 is a schematic diagram of the structure of a communication device provided in one embodiment of this application.

[0039] Figure 23 is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0040] Figure 24 is a schematic diagram of an apparatus applicable to embodiments of this application. Detailed Implementation

[0041] The technical solutions in this application will now be described with reference to the accompanying drawings. For ease of understanding, the communication terms and processes that may be involved in the embodiments of this application will first be introduced with reference to Figures 1 to 9.

[0042] Communication system

[0043] The technical solutions of this application embodiment can be applied to various communication systems. For example, the embodiments of this application can be applied to Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A), New Radio (NR), evolution systems of NR, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), and 5th-generation (5G) systems. The embodiments of this application can also be applied to other communication systems, such as 6th-generation (6G) mobile communication systems, or future communication systems such as satellite communication systems.

[0044] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can support not only traditional cellular communication but also one or more other types of communication. For example, a communication system can support one or more of the following communication methods: device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), enhanced machine-type communication (eMTC), vehicle-to-vehicle (V2V) communication, and vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to communication systems that support the above-mentioned communication methods.

[0045] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0046] The communication system in this application embodiment can be applied to unlicensed spectrum. This unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in this application embodiment can also be applied to licensed spectrum. This licensed spectrum can also be considered a dedicated spectrum.

[0047] The technical solutions of this application embodiment can be applied to various Internet of Things (IoT) communication systems. For example, this technical solution can be applied to narrowband Internet of Things (NB-IoT) communication systems. As another example, this technical solution can be applied to ambient IoT (AIoT) communication systems.

[0048] Figure 1 illustrates an example system architecture of a communication system 100 applicable to embodiments of this application. The communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The terminal device 120 can access a network (such as a wireless network) through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity; this embodiment of the application does not limit this.

[0049] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the terminal device can act as a base station. For example, the terminal device can act as a scheduling entity, providing sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) systems. For instance, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through base stations.

[0050] In some embodiments, the terminal device may also be a device in AIoT (such as a reader) to meet the needs of certain scenarios.

[0051] The network device in this application embodiment can also be an access network device or a radio access network device, such as a base station. The network device in this application embodiment can refer to a radio access network (RAN) node or device that connects a terminal device to a wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), V2X, and M2M communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0052] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0053] In some deployments, the network device in this application embodiment may refer to a CU or a DU; or, the network device may include both a CU and a DU. The gNB may also include an AAU.

[0054] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0055] It should be understood that all or part of the functions of the communication 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.

[0056] Figure 1 illustrates an exemplary network device 110 and two terminal devices 120. Optionally, the communication system 100 may include multiple network devices 110, and the communication system 100 may also include other numbers of terminal devices 120.

[0057] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 can be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities. This application embodiment does not limit this.

[0058] Maximum power reduction (MPR)

[0059] Many network devices (such as 5G outdoor macro base stations) can achieve a transmit power of up to 53dBm, but the maximum transmit power of terminal devices (such as handheld terminals) does not exceed 30dBm. Furthermore, there is a significant difference in the number of antenna arrays between network devices and terminal devices, resulting in a persistent and severe mismatch between the uplink and downlink coverage capabilities and range of network devices. To address this deficiency, the 3rd Generation Partnership Project (3GPP), starting with 5G, aimed to improve the transmit power of terminal devices through various means and defined corresponding power backoff and management mechanisms to meet energy conservation and human radiation requirements.

[0060] The significance of MPR (Maximum Power Backoff) lies in ensuring that the power amplifier (PA) of the terminal device's antenna operates in the linear amplification region, reducing adjacent channel interference by sacrificing some DC power consumption. 3GPP has also been researching how to reduce MPR to improve the transmit power of terminal devices, thereby ensuring uplink coverage. Currently, MPR is a power backoff value defined based on the channel bandwidth of the terminal device to meet adjacent channel interference requirements.

[0061] The relevant technologies define the MPR of terminal devices with a power class (PC) 3 as shown in Table 1 below.

[0062] Table 1 MPR for PC3

[0063] For example, when a terminal device uses DFT-s-OFDM modulation technology and specifically uses 16QAM modulation, if the terminal device performs uplink transmission based on edge RBs or external RBs, the MPR of the terminal device is equal to 2dB; if the terminal device performs uplink transmission based on internal RBs, the MPR of the terminal device is equal to 1dB.

[0064] For example, when a terminal device uses CP-OFDM modulation technology and specifically QPSK modulation, if the terminal device performs uplink transmission based on edge RBs or external RBs, the MPR of the terminal device is equal to 3dB. If the terminal device performs uplink transmission based on internal RBs, the MPR of the terminal device is equal to 1.5dB.

[0065] As can be seen from Table 1, for QPSK and 16QAM modulation, the MPR of the external RB allocation area and the edge RB allocation area is at least 1dB larger than that of the internal RB allocation area, resulting in poor uplink coverage when the terminal device performs uplink transmission based on the external RB and the edge RB.

[0066] In Release 19 (R19), 3GPP attempted to further expand the internal RB allocation area by extending the channel bandwidth of terminal devices, thereby effectively reducing MPR.

[0067] Maximum transmit power P CMAX Based on MPR and the maximum power P of the terminal equipment powerclass Determine according to the following formula:

[0068] 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 )};

[0069] P CMAX_H,f,c =MIN{PEMAX,c ,P PowerClass –ΔP PowerClass +ΔP PowerBoost}

[0070] Among them, P CMAX_L,f,c P represents the minimum and maximum allowable transmit power configured for the terminal device on carrier f in serving cell c. CMAX_H,f,c P represents the maximum allowed transmit power configured for the terminal device on carrier f in serving cell c. EMAX,c This indicates the maximum transmit power indicated by the network device (P of the terminal device). CMAX (This power must not be exceeded), ΔT C,c P represents the power shift at the edge of the frequency band. PowerClass ΔP represents the maximum transmit power corresponding to the power level defined by the terminal device. When using Pi / 2BPSK modulation and the terminal device indicates support for PC3, ΔP PowerClass = -3dB, ΔP PowerBoost MPR represents the additional power gain when the terminal device supports a specific modulation scheme and operates in a specific frequency band. c Indicates maximum power retraction, A-MPR c Indicates additional power back-off, ΔMPR c MPR c The adjustment amount, ΔT IB,c These are parameters related to carrier aggregation (CA) / dual connectivity (DC), representing the additional tolerance for the serving cell c, ΔT. C,c ΔT represents the power shift at the edge of the frequency band. RxSRS P-MPR represents the power bias associated with the sounding reference signal (SRS). c This indicates a power reduction in response to electromagnetic energy absorption requirements.

[0071] In determining P CMAX Subsequently, the terminal device can indicate its P to the network device via a power headroom report (PHR). CMAX And power headroom (ph). The power headroom can be the maximum transmit power P. CMAXThe difference between the transmit power of the PHR and the transmit power of the physical uplink shared channel (PUSCH) determined by the terminal device is used to enable network devices to perform more suitable scheduling for the terminal device based on power margin. The PHR is reported through the media access control element (MAC CE), and its reporting format is shown in Figure 2.

[0072] In related technologies, terminal devices often exhibit a large MPR (Maximum Transmit Power) in the outer or edge RB (Radial Receptor) regions of the channel bandwidth. This results in a lower maximum transmit power for the terminal device in these regions, thereby reducing its uplink coverage. Therefore, improving the uplink coverage of terminal devices is a problem that needs to be addressed.

[0073] To address the aforementioned issues, this application provides embodiments that set multiple maximum power backoff values ​​with different values ​​for the external RBs or edge RBs included in the channel bandwidth of the terminal device. This allows the terminal device to select a smaller maximum power backoff value in certain situations, thereby improving the uplink coverage of the terminal device.

[0074] Figures 3A and 3B are schematic flowcharts of the communication method provided in the embodiments of this application. The method in Figure 3A is described from the perspective of the interaction between the terminal device and the network device. The terminal device and the network device can be any type of terminal device and network device mentioned in Figure 1. The embodiments of this application do not specifically limit the modulation method used by the terminal device, and it can be determined based on the configuration of the network device. As an example, the modulation method used by the terminal device can be QPSK or 16QAM. Of course, the terminal device can also use other modulation methods to modulate the signal to be transmitted.

[0075] Referring to Figure 3A, in step S310A, the terminal device determines the maximum power back-off value corresponding to the first RB. The maximum power back-off value corresponding to the first RB can be determined based on information sent by the network device. For example, referring to Figure 3B, in step S310B, the terminal device receives first information sent by the network device. The first information is used to determine the maximum power back-off value corresponding to the first RB. Alternatively, the maximum power back-off value corresponding to the first RB can also be determined based on predefined protocol information.

[0076] The first RB mentioned above can be an external RB or an edge RB included in the first channel bandwidth allocated by the network device to the terminal device. Alternatively, the first RB is located in the external RB allocation area or the edge RB allocation area within the first channel bandwidth. Or, the RB allocation type of the first RB is either external RB allocation or edge RB allocation. It should be understood that the first RB may include one RB or multiple RBs.

[0077] The maximum power back-off value corresponding to the first RB includes a first maximum power back-off value and / or a second maximum power back-off value. Alternatively, the maximum power back-off value corresponding to the first RB is one of the first and second maximum power back-off values. The second maximum power back-off value can be, for example, a maximum power back-off value determined based on protocol predefined information (such as the maximum power back-off values ​​shown in Table 1 above). The first maximum power back-off value is less than the second maximum power back-off value. Therefore, the first maximum power back-off value can be referred to as the reduced maximum power back-off value (R-MPR). The first maximum power back-off value can be based on the difference between the second maximum power back-off value and a first adjustment amount. The first adjustment amount can be, for example, 1, 2, or 3 (in dB).

[0078] As can be seen from the above description, the embodiments of this application set a first maximum power backoff value (a smaller maximum power backoff value) and a second maximum power backoff value (a larger maximum power backoff value) for the external RBs or edge RBs included in the channel bandwidth of the terminal device. Therefore, even if the terminal device performs uplink transmission based on external RBs or edge RBs, it has the opportunity to select a smaller maximum power backoff value, thereby helping to improve the uplink coverage of the terminal device.

[0079] This application does not specifically limit the definition of the first channel bandwidth mentioned above in the embodiments. Two possible definition methods are given below.

[0080] In some embodiments, the first channel bandwidth may include the number of RBs (or a configurable number of RBs) and / or a guard bandwidth (the guard bandwidth may be located on one or both sides of the available RBs in the first channel bandwidth).

[0081] In one implementation, the first channel bandwidth can be associated with a carrier of the terminal device. The carrier of the terminal device refers to the carrier configured for the terminal device by the network device. For example, the first channel bandwidth can be determined based on the carrier bandwidth of the terminal device (i.e., the bandwidth of the carrier configured for the terminal device by the network device) (here, the carrier bandwidth includes the configurable number of RBs and the corresponding guard bandwidth). Exemplarily, the first channel bandwidth can be equal to the carrier bandwidth of the terminal device. In this case, the phrase "the first RB is an external RB or an edge RB included in the first channel bandwidth" mentioned above can mean that the first RB is the carrier of the terminal device or an external RB or an edge RB included in the carrier bandwidth.

[0082] In another implementation, the first channel bandwidth can be associated with a first resource segment configured by the network device for the terminal device. For example, the first channel bandwidth can be equal to the bandwidth of the first resource segment. In this case, the phrase "the first RB is an external RB or an edge RB included in the first channel bandwidth" mentioned above can mean that the first RB is an external RB or an edge RB included in the first resource segment.

[0083] It should be noted that the "resource segment (or fragment)" mentioned in the embodiments of this application may include one or more of time-domain resources, frequency-domain resources, and spatial-domain resources. For example, a resource segment may include one or more carriers, one or more bandwidth parts (BWPs), and one or more consecutive redundancy blocks (RBs). Exemplarily, a resource segment may be a single carrier, or a resource segment may be a continuous frequency-domain resource (such as a frequency-domain resource composed of several RBs), and the frequency domain size corresponding to the frequency-domain resource is different from the frequency domain size corresponding to the carrier.

[0084] Furthermore, a resource segment can belong to a resource set, which, from a frequency domain perspective, can be called a frequency resource set (FR set). A resource set can include multiple resource segments. There can be a certain frequency domain spacing between adjacent resource segments, as shown in Figure 4 (Wgap in Figure 4 represents the frequency domain spacing between resource segments). This frequency domain spacing can include one or more RBs, or it can include n MHz (n is a positive integer greater than or equal to 1). Alternatively, in some implementations, the frequency domain spacing between adjacent resource segments can be 0, meaning the multiple resource segments can be allocated consecutively, as shown in Figure 5. Resources within a frequency resource set can be located within one frequency band or span multiple frequency bands. For example, as shown in Figure 6, all resources within a resource set are located within frequency band n2 (the bandwidth of frequency band n2 is 1930MHz to 1990MHz). For example, as shown in Figure 7, a set of frequency domain resources includes some frequency domain resources within frequency band n2 and some frequency domain resources within frequency band n3 (the bandwidth of frequency band n3 is 1805MHz to 1880MHz).

[0085] A resource set can be transmitted and received by one set of radio frequency (RF) links of a terminal device, or by multiple sets of RF links of the terminal device. In the implementation of the terminal device, signal transmissions on different resource sets can be switched in the time domain to effectively reuse RF links. For example, the terminal device can transmit a signal on resource set 1 based on RF link 1 at time t1, and transmit a signal on resource set 2 based on RF link 1 at time t2. Alternatively, signals on multiple resource sets can also be transmitted simultaneously by multiple sets of RF links. For example, the terminal device can transmit a signal on resource set 1 based on RF link 1 at time t1, and simultaneously transmit a signal on resource set 2 based on RF link 2.

[0086] As can be seen from the above description, compared with the carrier, the definition of the resource segment is more flexible. Defining the channel bandwidth of the terminal device based on the resource segment helps the network device to allocate resources more efficiently.

[0087] As mentioned above, the first RB refers to the external RB or edge RB included in the first channel bandwidth. The following section provides a more detailed explanation of how to determine the RB type of the first RB with examples.

[0088] If the first RB satisfies the conditions defined by the following formulas (1)-(2), then it means that the first RB (the initial RB in the first RB is RB in the following formulas) Start (Indicated by) the external RB or edge RB included in the first channel bandwidth: L CRB ≤-RB Start +N RB , 0≤L CRB ≤N RB ,0≤RB Start ≤N RB (1) RB Start <RB Start,Low RB Start >RB Start,High (2)

[0089] Where, N RB L represents the number of RBs occupied by the first channel bandwidth. CRB RB represents the length of the contiguous resource block allocation within the first channel bandwidth. Start,Low and RB Start,High These represent the lowest and highest RB positions of the starting RB for the allocation of this contiguous resource block, respectively. Start,Low =max(1,floor(L) CRB / 2)), RB Start,High =N RB –RB Start,Low –LCRB floor(.) means rounding down to the nearest integer.

[0090] See Figure 8, with N RB For example, if the first RB satisfies the above formula, then the first RB will fall in the shaded area in Figure 8. At this time, it can be determined that the first RB is an outer RB or an edge RB.

[0091] The following section provides a detailed example illustrating the method for setting back the maximum power value corresponding to the first RB.

[0092] In one implementation, the external or edge RBs included in the first channel bandwidth can be divided into a first group of RBs and a second group of RBs, wherein the first group of RBs uses a first maximum power backoff value, and the second group of RBs uses a second maximum power backoff value. Then, based on the first information mentioned above, it can be directly indicated whether the first RB belongs to the first group of RBs or the second group of RBs, thereby determining the maximum power backoff value corresponding to the first RB.

[0093] Alternatively, in another implementation, it can be determined whether the first RB is located within the inner RB region of the second channel bandwidth based on the first information. If the first RB is located within the inner RB region of the second channel bandwidth, then the first RB corresponds to a first maximum power backoff value; otherwise, the first RB corresponds to a second maximum power backoff value. The first channel bandwidth mentioned above can be the actual channel bandwidth allocated by the network device to the terminal device, and the second channel bandwidth mentioned here can be the channel bandwidth obtained by extending the first channel bandwidth. It should be understood that this extension can be a virtual extension, that is, the channel bandwidth actually used by the terminal device is still the first channel bandwidth, while the second channel bandwidth is mainly used to determine the maximum power backoff value corresponding to the outer RB or edge RB.

[0094] In some implementations, the size of the second channel bandwidth can be represented or indicated based on one or more of the following: the number of RBs or PRBs, the ratio between the second channel bandwidth and the first channel bandwidth, the bandwidth predefined by the protocol (or supported by the protocol), and megahertz.

[0095] As mentioned earlier, the first channel bandwidth can include a configurable number of RBs (which can be N). RB The second channel bandwidth (represented by GB) can be extended by the configurable number of RBs or by the entire first channel bandwidth (which can be represented by CBW). If the configurable number of RBs within the first channel bandwidth is extended, the second channel bandwidth is related to the number of RBs within the first channel bandwidth. If the entire first channel bandwidth is extended, the second channel bandwidth is related to both the configurable number of RBs within the first channel bandwidth and GB.

[0096] For example, the size of the second channel bandwidth can be represented or indicated using the number of RBs or PRBs. For instance, if the first channel bandwidth is 20MHz, for a 15kHz SCS, the first channel bandwidth contains 106 RBs and GBs, and the size of the second channel bandwidth could be 159 RBs. Or, if the first channel bandwidth is 20MHz, for a 15kHz SCS, the first channel bandwidth contains 106 RBs and GBs, and the size of the second channel bandwidth could be 212 RBs.

[0097] For example, the bandwidth of the second channel can be expressed or indicated using megahertz (MHz). Alternatively, the bandwidth of the second channel can be indicated using MHz. For instance, the bandwidth of the second channel could be 25MHz or 30MHz.

[0098] For example, the size of the second channel bandwidth can be based on a channel bandwidth representation or indication predefined by the protocol. Alternatively, the second channel bandwidth can be a channel bandwidth predefined or supported by the protocol. Or, the second channel bandwidth can be determined or selected from bandwidths predefined or supported by the protocol. For instance, assuming the protocol predefined or supports bandwidths of 20MHz, 50MHz, and 100MHz, if the first channel bandwidth is 20MHz, then the second channel bandwidth can be 50MHz or 100MHz.

[0099] For example, the size of the second channel bandwidth can be expressed or indicated based on the ratio between the second channel bandwidth and the first channel bandwidth. This ratio can be the ratio of the first channel bandwidth to the second channel bandwidth, or the ratio of the second channel bandwidth to the first channel bandwidth. For example, the size of the second channel bandwidth is X times the first channel bandwidth, where X can be any positive number, such as 1 / 4, 1 / 3, 1 / 2, 2, 2.25, 2.5, etc.

[0100] In some embodiments, the offset in frequency domain position between the first channel bandwidth and the second channel bandwidth can be represented based on the offset in frequency domain position between the starting RB of the first channel bandwidth and the starting RB of the second channel bandwidth; or, the offset in frequency domain position between the first channel bandwidth and the second channel bandwidth can be represented based on the offset in frequency domain position between the ending RB of the first channel bandwidth and the ending RB of the second channel bandwidth. This offset in frequency domain position between the first channel bandwidth and the second channel bandwidth can be determined based on protocol predefined information and / or network device configuration information. The offset in frequency domain position between the first channel bandwidth and the second channel bandwidth can be based on an RB number indication, a megahertz indication, or a first channel bandwidth indication (such as an indication based on a multiple of the first channel bandwidth). For example, the offset in frequency domain position between the first channel bandwidth and the second channel bandwidth can be 25 MHz, or 1 / 4 of the first channel bandwidth.

[0101] In some embodiments, the second channel bandwidth is a fixed bandwidth predefined by the protocol (in which case the network device may not need to indicate the second channel bandwidth). Further, in some embodiments, the offset in the frequency domain between the second channel bandwidth and the first channel bandwidth can be a fixed offset predefined by the protocol, or an offset indicated by the network device. This offset (e.g., a fixed offset) can be determined based on the first channel bandwidth and / or the second channel bandwidth. This offset can be the number of RBs, an offset in MHz, or an offset indicated as a multiple of the first channel bandwidth and / or the second channel bandwidth. For example, the offset could be 0.5 × the number of configurable RBs within the first channel bandwidth. If the offset is an integer, the above calculation result can be rounded up or down. Alternatively, the offset could be 0.5 × the first channel bandwidth.

[0102] In some embodiments, the frequency domain resources occupied by the second channel bandwidth include first frequency domain resources and second frequency domain resources. The first frequency domain resources are the same as the frequency domain resources occupied by the first channel bandwidth (or, the first frequency domain resources are the first channel bandwidth, or, the first frequency domain resources are a part of the second channel bandwidth and equal to the first channel bandwidth), and the second frequency domain resources can be understood as an extension of the first channel bandwidth (or, the second frequency domain resources are an extension of the first channel bandwidth). The second frequency domain resources satisfy one or more of the following: the second frequency domain resources are located on one or both sides of the first frequency domain resources; the second frequency domain resources are symmetrical or asymmetrical with respect to the first frequency domain resources. Both the first and second frequency domain resources can be represented or indicated by one or more of RB, the first channel bandwidth, and megahertz.

[0103] For example, the first channel bandwidth is 20MHz. For a 15kHz SCS, the first channel bandwidth includes 106 RBs and GB. The second channel bandwidth is 159 RBs, plus an additional 53 RBs (these 53 RBs correspond to the second frequency domain resources mentioned above, while the original 106 RBs correspond to the first frequency domain resources mentioned above). These 53 RBs can be located either to the left or to the right of the first channel bandwidth.

[0104] For example, the first channel bandwidth is 20MHz. For a 15kHz SCS, the first channel bandwidth includes 106 RBs and GB. The second channel bandwidth is 212 RBs, plus an extended 106 RBs (these extended 106 RBs correspond to the second frequency domain resources mentioned above, while the original 106 RBs correspond to the first frequency domain resources mentioned above). Of these extended 106 RBs, 53 RBs can be located to the left of the first channel bandwidth, and the other 53 RBs can be located to the right of the first channel bandwidth. Alternatively, all 106 extended RBs can be located to the left or right of the first channel bandwidth.

[0105] For example, as mentioned earlier, the offset between the second channel bandwidth and the first channel bandwidth can be a fixed offset. In this case, the second channel bandwidth can be offset by a fixed offset only relative to the starting frequency domain position of the first channel bandwidth, or offset by a fixed offset only relative to the ending frequency domain position of the first channel bandwidth, or it can be offset by a fixed offset symmetrically or asymmetrically on both sides of the first channel bandwidth.

[0106] In some embodiments, the size of the second frequency domain resource may be represented based on one or more of the following: the number of RBs occupied by the first channel bandwidth, the size of the first channel bandwidth, and a first proportionality factor.

[0107] For example, the size of the second frequency domain resource is determined based on the product of the number of RBs occupied by the first channel bandwidth and a first scaling factor; and / or, the size of the second frequency domain resource is determined based on the product of the size of the first channel bandwidth and the first scaling factor. Exemplarily, the size of the second frequency domain resource is less than or equal to the product of the number of RBs occupied by the first channel bandwidth and the first scaling factor. Also, the size of the second frequency domain resource is less than or equal to the product of the size of the first channel bandwidth and the first scaling factor. Also, the size of the second frequency domain resource is less than or equal to one of a first value (the product of the number of RBs occupied by the first channel bandwidth and the first scaling factor) and a second value (the product of the size of the first channel bandwidth and the first scaling factor). Also, the size of the second frequency domain resource is less than or equal to the smaller of the first value (the product of the number of RBs occupied by the first channel bandwidth and the first scaling factor) and the second value (the product of the size of the first channel bandwidth and the first scaling factor). Also, the size of the second frequency domain resource is less than or equal to the sum of the first value (the product of the number of RBs occupied by the first channel bandwidth and the first scaling factor) and the second value (the product of the size of the first channel bandwidth and the first scaling factor).

[0108] The first proportional coefficient satisfies one or more of the following: the first proportional coefficient is less than or equal to 0.5; the first proportional coefficient is determined based on protocol predefined information, network device configuration information and / or terminal device capability information.

[0109] The aforementioned first proportional coefficient can be a fixed proportional coefficient predefined by the protocol, or it can be a proportional coefficient indicated by the network device, thereby supporting flexible adjustment of the second channel bandwidth.

[0110] In some embodiments, the second channel bandwidth is the channel bandwidth configured for a single cell. Alternatively, terminal devices (or terminal devices supporting bandwidth extension) within a cell that support a first maximum power backoff value use the same second channel bandwidth. For example, if two terminal devices in the same cell, terminal device 1 supporting 0.25 times the first channel bandwidth extension and terminal device 2 supporting 0.5 times the first channel bandwidth extension, and the network device is configured with a 0.5 times first channel bandwidth extension, then within this cell, only terminal device 2 can use the extended second channel bandwidth (thus supporting a reduction in the maximum power backoff value).

[0111] For example, the first information can be used to determine or indicate the second channel bandwidth, such as determining or indicating one or more of the following: the size of the second channel bandwidth, the offset in frequency domain position between the first and second channel bandwidths, and the offset direction of the second channel bandwidth relative to the first channel bandwidth. That is, the first information can determine whether the first RB is an outer RB or an edge RB in the first channel bandwidth by indicating the second channel bandwidth. The size of the second channel bandwidth can be represented by the number of RBs or PRBs. The number of RBs occupied by the second channel bandwidth can be greater than the number of RBs occupied by the first channel bandwidth. The offset in frequency domain position between the first and second channel bandwidths can be represented by the offset in frequency domain position between the starting RB of the first channel bandwidth and the starting RB of the second channel bandwidth, or by the offset in frequency domain position between the ending RB of the first channel bandwidth and the ending RB of the second channel bandwidth. The offset direction of the second channel bandwidth relative to the first channel bandwidth can include an offset to one side of the first channel bandwidth (e.g., the lower frequency side, or the higher frequency side), or an offset to either side of the first channel bandwidth.

[0112] To make it easier to understand, two examples are given below.

[0113] Example 1: The first channel bandwidth is the carrier bandwidth corresponding to the actual carrier of the terminal device, and the second channel bandwidth is the carrier bandwidth corresponding to the virtual carrier / extended carrier of the terminal device.

[0114] The actual carrier of a terminal device refers to the carrier configured for the terminal device by the network device. Therefore, the actual carrier of the terminal device can also be called the configured carrier. The carrier bandwidth corresponding to the virtual carrier / extended carrier of the terminal device can be greater than the carrier bandwidth corresponding to the actual carrier of the terminal device. In addition, the virtual carrier / extended carrier and the actual carrier can use the same subcarrier spacing (SCS). In some implementations, the carrier bandwidth corresponding to the virtual carrier / extended carrier of the terminal device can be represented by virtualcarrierBandwidth / extendedcarrierBandwidth.

[0115] The first information, besides indicating the carrier bandwidth of the virtual / extended carrier, can also indicate the offset between the virtual / extended carrier and the real carrier in the frequency domain. Figure 9 shows an example of the relationship between the real carrier and the virtual / extended carrier. As can be seen from Figure 9, the carrier bandwidth of the virtual / extended carrier is greater than that of the real carrier, and there may be a certain offset between the virtual / extended carrier and the real carrier (RB in Figure 9). offset ).

[0116] Based on the above definitions, if the first RB satisfies the conditions defined by the following formulas (3)-(6), then the first RB can be determined to be an external RB or an edge RB corresponding to the real carrier, but the first RB belongs to the internal RB corresponding to the virtual carrier / extended carrier. In this case, the maximum power backoff value corresponding to the first RB can be the first maximum power backoff value mentioned above: RB Start,Low,V ≤RB Start,V ≤RB Start,High,V (3) L CRB,V ≤ceil(N RB,V / 2) (4) L CRB ≤-(RB Start +RB offset )+N RB , 0≤L CRB ≤N RB ,0+RB offset ≤RB Start ≤N RB +RB offset (5) RB Start <RB Start,Low RB Start >RB Start,High (6)

[0117] Where, N RB,V Indicates the number of RBs contained in the virtual carrier / spread carrier (which can be indicated by the first information mentioned above), L CRB,V RB represents the length of the contiguous resource block allocation for virtual carriers / spread carriers. Start,Low,V and RB Start,High,V These represent the lowest and highest RB positions of the starting RB for the allocation of this contiguous resource block, respectively. Start,Low,V =max(1,floor(L) CRB,V / 2)),RBStart,High,V =N RB,V –RB Start,Low,V –L CRB,V N RB L is the number of RBs contained in the actual carrier. CRB It is the length of the real carrier contiguous resource block allocation, RB Start,Low =max(1+RB) offset ,floor(L CRB / 2)+RB offset ), RB Start,High =N RB +RB offset –RB Start,Low –L CRB It should be understood that in actual communication processes, L CRB It can be configured by network devices; however, when determining the type of RB region corresponding to the virtual / extended carrier and the real carrier, L CRB It can be from 0 to N RB Traverse within the range, similarly, L CRB,V It can be from 0 to N RB,V Traverse within the range.

[0118] In the above formulas, formulas (3) and (4) define the internal RB allocation region of the virtual carrier / spread carrier, assuming N RB,V =40, then the internal RB allocation region of the virtual carrier is shown in Figure 10 (the region enclosed by the points in Figure 10). Formulas (5) and (6) define the external RB and edge RB allocation regions of the real carrier, assuming N RB =25, then the outer RB and edge RB allocation areas of the real carrier are shown in Figure 8 (shaded area in Figure 8).

[0119] If the first RB satisfies the conditions defined in formulas (3) to (6), then the first RB is located in the overlapping area of ​​the inner RB allocation area of ​​the virtual carrier / extended carrier and the outer RB and edge RB allocation areas of the real carrier. For the RBs in this overlapping area, the embodiments of this application use a first maximum power back-off value (i.e., a reduced maximum power back-off value).

[0120] For example, suppose N RB,V =40, N RB =25, the offset of the virtual carrier from the starting RB of the real carrier (i.e., RB in the formula). offset If the value of ) is 0, then the overlap area between the inner RB allocation area of ​​the virtual carrier and the outer RB and edge RB allocation areas of the real carrier is shown in Figure 11 (i.e., the shaded area in Figure 11).

[0121] For example, suppose N RB,V =40, NRB =25, the offset of the virtual carrier from the starting RB of the real carrier (i.e., RB in the formula). offset The value of ) is 4. The overlapping area of ​​the inner RB allocation area of ​​the virtual carrier with the outer RB and edge RB allocation areas of the real carrier is shown in Figure 12 (i.e., the shaded area in Figure 12).

[0122] It should be noted that in some implementations, the first information may not indicate the offset of the frequency domain position between the virtual carrier / extended carrier and the real carrier. In this case, it can be assumed that the starting RB position of the virtual carrier and the real carrier is the same. In this case, the parameter RB in the above formulas (3) to (6) can be... offset delete.

[0123] It should also be noted that in Example 1, RB offset It was added to the definition of the lowest and highest starting RB positions of the real carrier. In other embodiments, RB offset It can also be added to the definition of the lowest starting RB position and the highest starting RB position of the virtual carrier / extended carrier. The "overlapping area between the internal RB allocation area of ​​the virtual carrier / extended carrier and the external RB and edge RB allocation area of ​​the real carrier" determined by the two definition methods is equivalent. For example, if the first RB satisfies the conditions defined by the following formulas (7)-(10), it can be determined that the first RB is in the overlapping area between the internal RB area of ​​the virtual carrier / extended carrier and the corresponding external RB or edge RB of the real carrier. At this time, the maximum power backoff value corresponding to the first RB can be the first maximum power backoff value mentioned above: RB Start,Low,V ≤RB Start,V ≤RB Start,High,V (7) L CRB,V ≤ceil(N RB,V / 2) (8) L CRB ≤-RB Start +N RB , 0≤L CRB ≤N RB (9) 0≤RB Start <RB Start,Low RB Start,High <RB Start <N RB (10)

[0124] The definitions of the parameters in the above formulas are basically similar to those in formulas (3) to (6), except that RB Start,Low,V =max(1-RB) offset ,floor(L CRB,V / 2)-RB offset ),RB Start,High,V =N RB,V -RB offset –RB Start,Low,V –L CRB,V RB Start,Low =floor(L CRB / 2),RB Start,High =N RB –RB Start,Low –L CRB .

[0125] Example 2: The first channel bandwidth is the bandwidth of the first resource segment configured in the terminal device, and the second channel bandwidth is the bandwidth corresponding to the extended resource segment.

[0126] The meaning of the resource segment is explained in the previous text and will not be repeated here.

[0127] In Example 2, the phrase "the first RB is an external RB or edge RB included in the first channel bandwidth" mentioned earlier can refer to the first RB being the external RB or edge RB corresponding to the first resource segment of the terminal device. The first resource segment mentioned here can be configured by the network device for the terminal device; therefore, the first resource segment can also be called a configured fragment.

[0128] The extended fragment has a bandwidth greater than that of the first resource fragment, and both the extended fragment and the first resource fragment use the same SCS. The extended fragment can include one or more of the following: the first resource fragment, the frequency domain spacing between the first and second resource fragments, and the second resource fragment. The second resource fragment mentioned here can be a resource fragment located in the same resource set as the first resource fragment, and the second resource fragment is adjacent to the first resource fragment in that resource set.

[0129] For example, as shown in Figure 13, the extended resource segment includes a first resource segment and a frequency domain spacing between the first and second resource segments.

[0130] For example, as shown in Figure 14, the extended resource segment may include a first resource segment, a second resource segment, and a frequency domain interval between the first resource segment and the second resource segment.

[0131] In Example 2, if the first RB satisfies the conditions defined by formulas (11)-(14), then the first RB can be determined to be an external RB or an edge RB corresponding to the first resource segment, but the first RB belongs to an internal RB corresponding to an extended resource segment. In this case, the maximum power backoff value corresponding to the first RB can be the first maximum power backoff value mentioned above: RB Start,Low,E ≤RB Start,E ≤RB Start,High,E (11) L CRB,E ≤ceil(N RB,E / 2) (12) L CRB ≤-(RB Start +RB offset )+N RB , 0≤L CRB ≤N RB ,0+RB offset ≤RB Start ≤N RB +RB offset (13) RB Start <RB Start,Low RB Start >RB Start,High (14)

[0132] Where, N RB,E The number of RBs contained in the extended resource segment (which can be indicated by the first information mentioned above), L CRB,E RB represents the length of the contiguous resource block allocation within the extended resource segment. Start,Low,E and RB Start,High,E These represent the lowest and highest RB positions of the starting RB for the allocation of this contiguous resource block, respectively. Start,Low,E =max(1,floor(L) CRB,E / 2)),RB Start,High,E =N RB,E –RB Start,Low,E –L CRB,E N RB L is the number of RBs contained in the actual carrier. CRB It is the length of the real carrier contiguous resource block allocation, RB Start,Low =max(1+RB) offset ,floor(L CRB / 2)+RB offset ), RB Start,High =NRB +RB offset –RB Start,Low –L CRB It should be understood that in the actual interaction process, L CRB It can be configured by network devices; however, when determining the type of RB area corresponding to the virtual carrier and the real carrier, L CRB It can be from 0 to N RB Traverse within the range, similarly, L CRB,E It can be from 0 to N RB,E Traverse within the range.

[0133] In the above formulas, formulas (11) and (12) define the internal RB allocation area corresponding to the extended resource segment, assuming N RB,E =40, then the internal RB allocation area corresponding to the extended resource segment is shown in Figure 15 (the area enclosed by the points in Figure 15). Formulas (13) and (14) define the external RB and edge RB allocation areas corresponding to the first resource segment, assuming N RB =25, then the external RB and edge RB allocation areas corresponding to the first resource segment are shown in Figure 16 (shaded area in Figure 16).

[0134] If the first RB satisfies the conditions defined by formulas (11) to (14), then the first RB is located in the overlapping area of ​​the inner RB allocation area of ​​the extended resource segment and the outer RB and edge RB allocation area of ​​the first resource segment. For the RBs in this overlapping area, the embodiments of this application use a first maximum power back-off value (i.e., a reduced maximum power back-off value).

[0135] For example, suppose N RB,V =40, N RB =25, the offset of the extended resource segment from the starting RB of the first resource segment (i.e., RB in the formula). offset If the value of ) is 0, then the overlapping area between the inner RB allocation area of ​​the extended resource segment and the outer RB and edge RB allocation areas of the first resource segment is shown in Figure 17 (i.e., the shaded area in Figure 17).

[0136] For example, suppose N RB,V =40, N RB =25, the offset of the extended resource segment from the starting RB of the first resource segment (i.e., RB in the formula). offset If the value of ) is 4, then the overlapping area between the inner RB allocation area of ​​the extended resource segment and the outer RB and edge RB allocation areas of the first resource segment is shown in Figure 18 (i.e., the shaded area in Figure 18).

[0137] It should be noted that in some implementations, the first information may not indicate the offset of the frequency domain position between the extended resource segment and the first resource segment. In this case, it can be assumed that the starting RB position of the extended resource segment and the first resource segment is the same. In this case, the parameter RB in the above formulas (11) to (14) can be... offset delete.

[0138] It should also be noted that in Example 2, RB offset It was added to the definition of the lowest starting RB position and the highest starting RB position of the first resource segment. In other embodiments, RB offset It can also be added to the definition of the lowest starting RB position and the highest starting RB position of the extended resource segment. The "overlapping area between the internal RB allocation area of ​​the extended resource segment and the external RB and edge RB allocation area of ​​the first resource segment" determined by the two definition methods is equivalent. For example, if the first RB satisfies the conditions defined by the following formulas (15)-(18), it can be determined that the first RB is in the overlapping area. At this time, the maximum power backoff value corresponding to the first RB can be the first maximum power backoff value mentioned above: RB Start,Low,E ≤RB Start,E ≤RB Start,High,E (15) L CRB,E ≤ceil(N RB,E / 2) (16) L CRB ≤-RB Start +N RB , 0≤L CRB ≤N RB (17) 0≤RB Start <RB Start,Low RB Start,High <RB Start ≤N RB (18)

[0139] The definitions of the parameters in the above formulas are basically similar to those in formulas (11) to (14), except that RB Start,Low,E =max(1-RB) offset ,floor(L CRB,E / 2)-RB offset ),RB Start,High,E =N RB,E -RB offset –RB Start,Low,E –L CRB,E RBStart,Low =floor(L CRB / 2),RB Start,High =N RB –RB Start,Low –L CRB .

[0140] In order for terminal devices to support the first maximum power backoff value (reduced maximum power backoff value) mentioned above, in some implementations, the terminal devices can interact with the network devices.

[0141] For example, referring to Figure 3, in some implementations, the terminal device can send second information to the network device. This second information can be used to instruct the terminal device to support a first maximum power backoff value (see step S305 in Figure 3).

[0142] In some implementations, this second information can be carried in radio resource control (RRC) signaling.

[0143] In some implementations, this second information can be terminal device capability information (such as UE capability information). This capability information can be represented, for example, using IE RedMPRQPSK16QAMFR1-R19. The terminal device can report the new IE RedMPRQPSK16QAMFR1-R19 via RRC signaling to indicate that the terminal device supports the first maximum power backoff value, that is, the terminal device supports using the first maximum power backoff value (reduced maximum power backoff value) in the external RB allocation area.

[0144] In some implementations, before sending the second information to the network device, the terminal device may first receive an inquiry message (such as a UE capability enquiry) from the network device. This inquiry message can be used to inquire whether the terminal device supports a first maximum power backoff value. After receiving this inquiry message, the terminal device may send the aforementioned second information to the network device.

[0145] In some implementations, the terminal device can receive third information (such as UE capability enable) sent by the network device. The third information is used to indicate that the terminal device is allowed to use a first maximum power backoff value (a reduced maximum power backoff value). This third information can be carried in MAC layer signaling, which can be represented, for example, as R-MPR-reporting-FR1.

[0146] The preceding text described in detail the first information sent by the network device to the terminal device. In some implementations, this first information can be sent to the terminal device simultaneously with the third information mentioned above. That is, when the network device instructs the terminal device to allow the use of the first maximum power backoff value, it can simultaneously send the first information to the terminal device (e.g., carrying the first and third information in the same MAC layer signaling), so that the terminal device can determine, based on the first information, on which external RBs or edge RBs to use the first maximum power backoff value. Of course, the first and third information can also be sent separately; for example, the first and third information can be carried in two different MAC layer signaling messages. As a concrete example, the network device can instruct the terminal device to use a reduced MPR (corresponding to the first maximum power backoff value mentioned above) for power reporting via the MAC layer signaling R-MPR-reporting-FR1. At the same time, network devices can carry first information through this MAC layer signaling. The first information indicates the size of a virtual carrier (indicated by the number of RBs) and the offset value of its starting point relative to the starting RB of the real carrier (offsettoConfiguredcarrier can be an integer multiple of RBs).

[0147] Network devices can directly send third-party information to terminal devices. Alternatively, in some implementations, before sending the third-party information to the terminal device, the network device can first determine whether the conditions for sending the third-party information are met. This application does not specifically limit the definition of these conditions; they can be determined by the network device after considering various factors. Two possible implementations are given below.

[0148] Implementation Method 1: The first RB is the carrier bandwidth of the terminal device, including the external RB or edge RB.

[0149] If the first RB is an external RB or an edge RB included in the carrier bandwidth of the terminal device, the network device may send third information to the terminal device if the first condition is met. The first condition mentioned here may be associated with one or more of the following: the carrier bandwidth of the network device, the interference suppression requirements of the adjacent frequency range of the current cell's frequency domain, the power level of the terminal device, the modulation scheme used by the terminal device, the RB allocation type corresponding to the first RB, and the multi-carrier configuration of the terminal device.

[0150] For example, the first condition includes that the carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device. That is, the network device sends the third information to the terminal device only if the carrier bandwidth of the network device is greater than that of the terminal device. This is because if the carrier bandwidth of the network device and the carrier bandwidth of the terminal device are the same, then the channel bandwidth of the terminal device is the maximum bandwidth that the network device can allocate, and the network device cannot further expand the channel bandwidth of the terminal device.

[0151] For example, the first condition includes that there is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain (or, in other words, there is no coexistence requirement in the adjacent channels of the current cell's frequency range). If there is no coexistence requirement in the adjacent channels of the current cell, then even if the network equipment increases the bandwidth of the terminal equipment, it will not cause interference to the adjacent channels.

[0152] For example, the first condition includes that the power level of the terminal device is a first power level. This first power level could be, for example, PC1, PC1.5, PC2, or PC3. That is, the network device can instruct the terminal device to use a first maximum power backoff value (a reduced maximum power backoff value) through third information when the power level of the terminal device is a specific power level.

[0153] For example, the first condition includes that the modulation scheme used by the terminal device is a first modulation scheme. This modulation scheme may include, for example, QPSK and / or 16QAM. That is, the network device can instruct the terminal device to use a first maximum power backoff value (a reduced maximum power backoff value) through third information when the terminal device is currently using a specific modulation scheme.

[0154] For example, the first condition includes that the RB allocation type corresponding to the first RB is an external RB allocation and / or an edge RB allocation. That is, when the network device determines that the RB it allocates to the terminal device is an external RB and / or an edge RB, it then instructs the terminal device to use the first maximum power backoff value (the reduced maximum power backoff value) through the third information.

[0155] For example, the first condition includes that the terminal device is configured with multiple carriers (these multiple carriers may be, for example, consecutive uplink carriers), and that all the remaining carriers, except for the carrier corresponding to the primary cell (PCell), are inactive. When the terminal device is configured with multiple carriers (especially consecutive uplink carriers), it means that the interference between these carriers is relatively weak. In this case, even if the terminal device is instructed to use the first maximum power backoff value (a reduced maximum power backoff value) through the third information, it will basically not cause interference to adjacent channels.

[0156] Implementation Method 2: The first RB is the external RB or edge RB corresponding to the first resource segment of the terminal device.

[0157] If the first RB is an external RB or edge RB corresponding to the first resource segment of the terminal device, the network device may send third information to the terminal device if the second condition is met. The second condition mentioned here may be associated with one or more of the following: interference suppression requirements of neighboring resource segments of the first resource segment; interference suppression requirements of frequency domain spacing between the first resource segment and neighboring resource segments; power level of the terminal device; modulation scheme used by the terminal device; RB allocation type corresponding to the first RB.

[0158] For example, the second condition includes that there is no interference suppression requirement in the neighboring resource segments of the first resource segment (or, in other words, there is no coexistence requirement between the first resource segment and its neighboring resource segments). If there is no coexistence requirement in the neighboring resource segments of the first resource segment, then even if the network equipment increases the bandwidth of the terminal equipment, it will not cause interference to the neighboring resource segments.

[0159] For example, the second condition includes the interference suppression requirement of the frequency domain spacing between the first resource segment and the adjacent resource segment (or, in other words, the first resource segment and the frequency domain spacing do not have a coexistence requirement). If the first resource segment and the frequency domain spacing do not have a coexistence requirement, then even if the network device increases the bandwidth of the terminal device, it will not cause interference to the frequency domain spacing.

[0160] For example, the second condition includes the terminal device's power level being a first power level. This first power level could be, for example, PC1, PC1.5, PC2, or PC3. In other words, the network device can instruct the terminal device to use a first maximum power backoff value (a reduced maximum power backoff value) via third information when the terminal device's power level is at a specific power level.

[0161] For example, the second condition includes that the modulation scheme used by the terminal device is the first modulation scheme. This modulation scheme may include, for example, QPSK and / or 16QAM. That is, the network device can instruct the terminal device to use a first maximum power backoff value (a reduced maximum power backoff value) through third information when the terminal device is currently using a specific modulation scheme.

[0162] For example, the second condition includes that the RB allocation type corresponding to the first RB is an external RB allocation and / or an edge RB allocation. That is, when the network device determines that the RB it allocates to the terminal device is an external RB and / or an edge RB, it then instructs the terminal device to use the first maximum power backoff value (the reduced maximum power backoff value) through the third information.

[0163] As mentioned earlier, the maximum transmit power of the terminal device can be determined based on the maximum power backoff value. Therefore, when the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device can be determined based on the first maximum power backoff value (the reduced maximum power backoff value).

[0164] In one implementation, the terminal device can directly use the first maximum power backoff value to replace the maximum power backoff value in the related technology, thereby determining the maximum transmit power of the terminal device.

[0165] For example, the maximum transmit power P of the terminal device CMAX The MPR can be determined using the following formula (in the formula below). c (Indicates the first maximum power backoff value): 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 (19) P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass –ΔP PowerClass +ΔP PowerBoost}; (20)

[0166] Among them, P CMAX_L,f,c P represents the minimum and maximum allowable transmit power configured for the terminal device on carrier f in serving cell c. CMAX_H,f,c P represents the maximum allowed transmit power configured for the terminal device on carrier f in serving cell c. EMAX,c Indicates the maximum transmit power indicated by the network (P of the terminal device). CMAX (This power must not be exceeded), ΔT C,c P represents the power shift at the edge of the frequency band. PowerClass ΔP represents the maximum transmit power corresponding to the power level defined by the terminal device. When using Pi / 2BPSK modulation and the terminal device indicates support for PC3, ΔP PowerClass = -3dB, ΔP PowerBoost A-MPR represents the additional power gain when the terminal device supports a specific modulation scheme and operates in a specific frequency band. c Indicates additional power back-off, ΔMPRc MPR c The adjustment amount, ΔT IB,c These are CA / DC related parameters, representing additional tolerances for serving cell c, ΔT. C,c ΔT represents the power shift at the edge of the frequency band. RxSRS P-MPR indicates the power bias associated with SRS. c This indicates a power reduction in response to electromagnetic energy absorption requirements.

[0167] In another implementation, the first maximum power back-off value is determined based on the difference between the second maximum power back-off value and the first adjustment amount. For example, the first maximum power back-off value is equal to the difference between the second maximum power back-off value and the first adjustment amount. The first adjustment amount mentioned here can be determined based on the first information mentioned above. For example, if the maximum power back-off value corresponding to the first RB is determined to be a reduced maximum power back-off value based on the first information, then the first adjustment amount is determined to be greater than 0, such as being equal to 1, 2, or 3 (the unit can be dB); otherwise, the first adjustment amount is determined to be equal to 0.

[0168] For example, the maximum transmit power P of the terminal device CMAX The MPR can be determined using the following formula (in the formula below). c (This represents the second maximum power back-off value, and R-MPR represents the first adjustment amount): P CMAX_L,f,c =MIN{P EMAX,c –ΔT C,c ,(P PowerClass –ΔP PowerClass +ΔP PowerBoost )–MAX(MAX(MPR c +ΔMPR c -R- MPR,A-MPR c )+ΔT IB,c +ΔT C,c +ΔT RxSRS P-MPR c (19) P CMAX_H,f,c =MIN{P EMAX,c ,P PowerClass –ΔP PowerClass +ΔP PowerBoost}; (20)

[0169] Among them, P CMAX_L,f,c P represents the minimum and maximum allowable transmit power configured for the terminal device on carrier f in serving cell c. CMAX_H,f,c P represents the maximum allowed transmit power configured for the terminal device on carrier f in serving cell c. EMAX,c Indicates the maximum transmit power indicated by the network (P of the terminal device). CMAX(This power must not be exceeded), ΔT C,c P represents the power shift at the edge of the frequency band. PowerClass ΔP represents the maximum transmit power corresponding to the power level defined by the terminal device. When using Pi / 2BPSK modulation and the terminal device indicates support for PC3, ΔP PowerClass = -3dB, ΔP PowerBoost A-MPR represents the additional power gain when the terminal device supports a specific modulation scheme and operates in a specific frequency band. c Indicates additional power back-off, ΔMPR c MPR c The adjustment amount, ΔT IB,c These are CA / DC related parameters, representing additional tolerances for serving cell c, ΔT. C,c ΔT represents the power shift at the edge of the frequency band. RxSRS P-MPR indicates the power bias associated with SRS. c This indicates a power reduction in response to electromagnetic energy absorption requirements.

[0170] After determining the maximum transmit power, the terminal device can transmit a power margin report to the network device. This power margin report includes or indicates fourth information and the terminal device's maximum transmit power. The fourth information mentioned here can be used to indicate that the maximum transmit power is determined based on a first maximum power backoff value. This application embodiment does not specifically limit the position of the fourth information in the power margin report; for example, the fourth information and the maximum transmit power can be located in the same byte of the power margin report. Exemplarily, a field can be set in the power margin report, which can occupy one bit. If the value of this bit is 1, it indicates that the terminal device's maximum transmit power is determined based on the first maximum power backoff value. Further, in some implementations, if the value of this bit is 0, it can indicate that the terminal device's maximum transmit power is determined based on a conventional method for determining the maximum transmit power.

[0171] For example, referring to Figure 19, this power margin report includes the PH field, the R-MPR field, and the P field. CMAX,f,c Fields. The PH field carries power margin information, and the R-MPR field occupies 1 bit and carries the fourth piece of information mentioned above, P. CMAX,f,c The field is used to carry the maximum transmit power determined by the terminal device based on the first maximum power backoff value.

[0172] For example, if the terminal device is configured with uplink continuous carriers and only the primary carrier corresponding to PCell is activated, the terminal device can add the aforementioned fourth information only to the information field corresponding to PCell in the power headroom report. Figure 20 shows the power headroom report reported by the terminal device in a carrier aggregation scenario. In Figure 20, bit C7 of the maximum transmit power field corresponding to PCell is used to carry the fourth information mentioned above, indicating that the maximum transmit power corresponding to PCell is determined based on the first maximum power backoff value.

[0173] The embodiments of this application are described in more detail below with specific examples. The UE in Figure 21 corresponds to the terminal device mentioned above, and the reduced maximum power back-off value corresponds to the first maximum power back-off value mentioned above. It should be noted that the examples in Figure 21 are merely to help those skilled in the art understand the embodiments of this application, and are not intended to limit the embodiments of this application to the specific values ​​or scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples in Figure 21, and such modifications or changes also fall within the scope of the embodiments of this application.

[0174] Referring to Figure 21, in step S2110, the network device sends a UE capability enquiry to the UE to ask whether the UE supports the reduced maximum power back-off value.

[0175] In step S2120, in response to the query information from the network device, the UE sends UE capability information (corresponding to the second information mentioned above) to the network device to indicate that it supports the reduced maximum power back-off value.

[0176] In step S2130, if the condition is met, the network device sends UE capability enable (corresponding to the third information mentioned above) to the UE to instruct the terminal device to use the reduced maximum power back-off value.

[0177] In step S2140, the terminal device sends a new maximum transmit power to the network device. This maximum transmit power is determined based on the reduced maximum power backoff value.

[0178] It should be understood that the channel bandwidth mentioned in the various embodiments of this application, including the RB or RB region, can also be expressed as the RB or RB region corresponding to the channel bandwidth.

[0179] The method embodiments of this application have been described in detail above with reference to Figures 1 to 21. The apparatus embodiments of this application will be described in detail below with reference to Figures 22 to 24. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0180] Figure 22 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. The communication device 2200 shown in Figure 22 can be the terminal device mentioned above. The communication device 2200 may include a determining module 2205. Optionally, the communication device 2200 may also include a communication module 2210. The determining module 2205 is used to determine the maximum power backoff value corresponding to a first resource block (RB), where the first RB is an external RB or edge RB included in the first channel bandwidth allocated by the network device to the terminal device, and the maximum power backoff value corresponding to the first RB includes a first maximum power backoff value and a second maximum power backoff value, wherein the first maximum power backoff value is less than the second maximum power backoff value.

[0181] In some implementations, if the first RB is located within the inner RB region included in the second channel bandwidth, then the first RB corresponds to the first maximum power backoff value.

[0182] In some implementations, the size of the second channel bandwidth is represented based on one or more of the following: the number of RBs, the ratio between the second channel bandwidth and the first channel bandwidth, a protocol-predefined bandwidth, and megahertz.

[0183] In some implementations, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the start RB of the first channel bandwidth and the start RB of the second channel bandwidth; or, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the end RB of the first channel bandwidth and the end RB of the second channel bandwidth.

[0184] In some implementations, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is determined based on protocol predefined information and / or the configuration information of the network device.

[0185] In some implementations, the frequency domain resources occupied by the second channel bandwidth include a first frequency domain resource and a second frequency domain resource. The first frequency domain resource is the same as the frequency domain resource occupied by the first channel bandwidth. The second frequency domain resource satisfies one or more of the following: the second frequency domain resource is located on one or both sides of the first frequency domain resource; the second frequency domain resource is symmetrical or asymmetrical with respect to the first frequency domain resource.

[0186] In some implementations, the size of the second frequency domain resource is represented based on one or more of the following: the number of RBs occupied by the first channel bandwidth, the size of the first channel bandwidth, and a first proportionality factor.

[0187] In some implementations, the size of the second frequency domain resource is determined based on the product of the number of RBs occupied by the first channel bandwidth and the first proportional coefficient; and / or, the size of the second frequency domain resource is determined based on the product of the size of the first channel bandwidth and the first proportional coefficient.

[0188] In some implementations, the first proportional coefficient satisfies one or more of the following: the first proportional coefficient is less than or equal to 0.5; the first proportional coefficient is determined based on protocol predefined information, the configuration information of the network device, and / or the capability information of the terminal device.

[0189] In some implementations, the second channel bandwidth is a fixed bandwidth predefined by the protocol.

[0190] In some implementations, the second channel bandwidth is a channel bandwidth configured for a cell; or, terminal devices within a cell that support the first maximum power backoff value use the same second channel bandwidth.

[0191] In some implementations, the first channel bandwidth includes the number of configurable RBs and / or guard bands within the first channel bandwidth.

[0192] In some implementations, the maximum power backoff value corresponding to the first RB is determined based on the first information sent by the network device.

[0193] In some implementations, the first information is used to indicate one or more of the following: the size of the second channel bandwidth; the offset of the frequency domain position between the second channel bandwidth and the first channel bandwidth; and the offset direction of the second channel bandwidth relative to the first channel bandwidth.

[0194] In some implementations, the number of RBs occupied by the second channel bandwidth is greater than the number of RBs occupied by the first channel bandwidth.

[0195] In some implementations, the communication module 2210 is further configured to: send second information to the network device, the second information being used to instruct the terminal device to support the first maximum power backoff value.

[0196] In some implementations, the communication module 2210 is further configured to: receive third information sent by the network device, the third information being used to indicate that the terminal device is allowed to use the first maximum power backoff value.

[0197] In some implementations, the first channel bandwidth is the carrier bandwidth corresponding to the carrier of the terminal device, and the third information is sent when a first condition is met; wherein, the first condition is associated with one or more of the following: the carrier bandwidth of the network device; the interference suppression requirements of the adjacent frequency range of the current cell's frequency domain; the power level of the terminal device; the modulation scheme used by the terminal device; the RB allocation type corresponding to the first RB; and the multi-carrier configuration of the terminal device.

[0198] In some implementations, the first condition includes one or more of the following: the carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device; there is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain; the power level of the terminal device is a first power level; the modulation method used by the terminal device is a first modulation method; the RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation; the terminal device is configured with multiple carriers, and the remaining carriers of the multiple carriers, except for the carrier corresponding to the main cell, are all inactive.

[0199] In some implementations, the first channel bandwidth is the bandwidth corresponding to the first resource segment, and the third information is sent when a second condition is met. The second condition is associated with one or more of the following: interference suppression requirements of neighboring resource segments of the first resource segment; interference suppression requirements of the frequency domain spacing between the first resource segment and the neighboring resource segments; the power level of the terminal device; the modulation scheme used by the terminal device; and the RB allocation type corresponding to the first RB.

[0200] In some implementations, the second condition includes one or more of the following: there is no interference suppression requirement in the neighboring resource segments of the first resource segment; there is no interference suppression requirement in the frequency domain spacing between the first resource segment and the neighboring resource segments; the power level of the terminal device is a first power level; the modulation scheme used by the terminal device is a first modulation scheme; and the RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation.

[0201] In some implementations, when the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device is determined based on the first maximum power backoff value.

[0202] In some implementations, the first maximum power backoff value is determined based on the second maximum power backoff value and a first adjustment amount, wherein the first adjustment amount is determined based on the first information.

[0203] In some implementations, the maximum transmit power is determined based on the difference between the first maximum power backoff value and the first adjustment amount.

[0204] In some implementations, the communication module 2210 is further configured to: transmit a power margin report to the network device, the power margin report including fourth information and the maximum transmit power set by the terminal, the fourth information being used to indicate that the maximum transmit power is determined based on the first maximum power backoff value.

[0205] In some implementations, the fourth information and the maximum transmit power are located in the same byte of the power margin report.

[0206] In some implementations, the first channel bandwidth is the bandwidth corresponding to the first resource segment, which is one of the following: one or more carriers, one or more BWPs, or one or more consecutive RBs.

[0207] In some implementations, the first resource segment belongs to a first resource set, and the first resource set further includes a second resource segment adjacent to the first resource segment. The first information is used to indicate a second channel bandwidth, and the second channel bandwidth includes one or more of the following: the first resource segment, the frequency domain spacing between the first resource segment and the second resource segment, and the second resource segment.

[0208] In some implementations, the first channel bandwidth is the carrier bandwidth corresponding to the carrier configured by the terminal device, and the first information is used to indicate the second channel bandwidth, which is equal to one of the following: the carrier bandwidth of the network device, or the total bandwidth of multiple carriers of the terminal device used for carrier aggregation.

[0209] In some implementations, the terminal device uses QPSK or 16QAM modulation.

[0210] Figure 23 is a schematic diagram of the structure of a communication device provided in another embodiment of this application. The communication device 2300 shown in Figure 23 can be the network device mentioned above. The communication device 2300 may include a communication module 2310. The communication module 2310 is used to send first information to a terminal device, the first information being used to determine the maximum power backoff value corresponding to a first resource block (RB), the first RB being an external RB or an edge RB included in the first channel bandwidth allocated by the network device to the terminal device, and the maximum power backoff value corresponding to the first RB including a first maximum power backoff value and a second maximum power backoff value, the first maximum power backoff value being less than the second maximum power backoff value.

[0211] In some implementations, if the first RB is located within the inner RB region included in the second channel bandwidth, then the first RB corresponds to the first maximum power backoff value, and the second channel bandwidth is determined based on the first information.

[0212] In some implementations, the first information is used to indicate one or more of the following: the size of the second channel bandwidth; the offset of the frequency domain position between the second channel bandwidth and the first channel bandwidth; and the offset direction of the second channel bandwidth relative to the first channel bandwidth.

[0213] In some implementations, the number of RBs occupied by the second channel bandwidth is greater than the number of RBs occupied by the first channel bandwidth.

[0214] In some implementations, the communication module 2310 is further configured to: receive second information sent by the terminal device, the second information being used to indicate that the terminal device supports the first maximum power backoff value.

[0215] In some implementations, the communication module 2310 is further configured to: send third information to the terminal device, the third information being used to indicate that the terminal device is allowed to use the first maximum power backoff value.

[0216] In some implementations, the first channel bandwidth is the carrier bandwidth corresponding to the carrier of the terminal device, and the third information is sent when a first condition is met; wherein, the first condition is associated with one or more of the following: the carrier bandwidth of the network device; the interference suppression requirements of the adjacent frequency range of the current cell's frequency domain; the power level of the terminal device; the modulation scheme used by the terminal device; the RB allocation type corresponding to the first RB; and the multi-carrier configuration of the terminal device.

[0217] In some implementations, the first condition includes one or more of the following: the carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device; there is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain; the power level of the terminal device is a first power level; the modulation method used by the terminal device is a first modulation method; the RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation; the terminal device is configured with multiple carriers, and the remaining carriers of the multiple carriers, except for the carrier corresponding to the main cell, are all inactive.

[0218] In some implementations, the first channel bandwidth is the bandwidth corresponding to the first resource segment, and the third information is sent when a second condition is met. The second condition is associated with one or more of the following: interference suppression requirements of neighboring resource segments of the first resource segment; interference suppression requirements of the frequency domain spacing between the first resource segment and the neighboring resource segments; the power level of the terminal device; the modulation scheme used by the terminal device; and the RB allocation type corresponding to the first RB.

[0219] In some implementations, the second condition includes one or more of the following: there is no interference suppression requirement in the neighboring resource segments of the first resource segment; there is no interference suppression requirement in the frequency domain spacing between the first resource segment and the neighboring resource segments; the power level of the terminal device is a first power level; the modulation scheme used by the terminal device is a first modulation scheme; and the RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation.

[0220] In some implementations, when the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device is determined based on the first maximum power backoff value.

[0221] In some implementations, the first maximum power backoff value is determined based on the second maximum power backoff value and a first adjustment amount, wherein the first adjustment amount is determined based on the first information.

[0222] In some implementations, the maximum transmit power is determined based on the difference between the second maximum power backoff value and the first adjustment amount.

[0223] In some implementations, the communication module 2310 is further configured to: receive a power margin report sent by the terminal device, the power margin report including fourth information and the maximum transmit power set by the terminal, the fourth information being used to indicate that the maximum transmit power is determined based on the first maximum power backoff value.

[0224] In some implementations, the fourth information and the maximum transmit power are located in the same byte of the power margin report.

[0225] In some implementations, the first channel bandwidth is the bandwidth corresponding to the first resource segment, which is one of the following: one or more carriers, one or more BWPs, or one or more consecutive RBs.

[0226] In some implementations, the first resource segment belongs to a first resource set, and the first resource set further includes a second resource segment adjacent to the first resource segment. The first information is used to indicate a second channel bandwidth, and the second channel bandwidth includes one or more of the following: the first resource segment, the frequency domain spacing between the first resource segment and the second resource segment, and the second resource segment.

[0227] In some implementations, the first channel bandwidth is the carrier bandwidth corresponding to the carrier configured by the terminal device, and the first information is used to indicate the second channel bandwidth, which is equal to one of the following: the carrier bandwidth of the network device, or the total bandwidth of multiple carriers of the terminal device used for carrier aggregation.

[0228] In some implementations, the terminal device uses QPSK or 16QAM modulation.

[0229] Figure 24 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 24 indicate that the unit or module is optional. This device 2400 can be used to implement the methods described in the above method embodiments. Device 2400 can be a chip, a terminal device, or a network device.

[0230] Apparatus 2400 may include one or more processors 2410. The processor 2410 may support apparatus 2400 in implementing the methods described in the preceding method embodiments. The processor 2410 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0231] The apparatus 2400 may further include one or more memories 2420. The memories 2420 store a program that can be executed by the processor 2410, causing the processor 2410 to perform the methods described in the preceding method embodiments. The memories 2420 may be independent of the processor 2410 or integrated within the processor 2410.

[0232] The device 2400 may also include a transceiver 2430. The processor 2410 can communicate with other devices or chips via the transceiver 2430. For example, the processor 2410 can send and receive data with other devices or chips via the transceiver 2430.

[0233] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0234] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0235] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0236] It should be understood that the terminology used in this application is only for explaining specific embodiments of this application and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0237] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0238] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0239] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0240] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0241] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0242] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0243] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0244] 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.

[0245] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they 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.

[0246] 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.

[0247] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center 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 can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0248] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

A communication method, characterized in that, include: The terminal device determines the maximum power backoff value corresponding to the first resource block (RB). The first RB is an external RB or edge RB included in the first channel bandwidth allocated by the network device to the terminal device. The maximum power backoff value corresponding to the first RB includes a first maximum power backoff value and / or a second maximum power backoff value. The first maximum power backoff value is less than the second maximum power backoff value. The method according to claim 1, characterized in that: If the first RB is located within the inner RB region included in the second channel bandwidth, then the first RB corresponds to the first maximum power backoff value. The method according to claim 2, characterized in that, The size of the second channel bandwidth is represented based on one or more of the following: the number of RBs, the ratio between the second channel bandwidth and the first channel bandwidth, the bandwidth predefined by the protocol, and megahertz. The method according to claim 2 or 3, characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the start RB of the first channel bandwidth and the start RB of the second channel bandwidth; or, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the end RB of the first channel bandwidth and the end RB of the second channel bandwidth. The method according to any one of claims 2 to 4, characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is determined based on protocol predefined information and / or the configuration information of the network device. The method according to any one of claims 2 to 5, characterized in that, The frequency domain resources occupied by the second channel bandwidth include first frequency domain resources and second frequency domain resources. The first frequency domain resources are the same as the frequency domain resources occupied by the first channel bandwidth, and the second frequency domain resources satisfy one or more of the following: The second frequency domain resource is located on one or both sides of the first frequency domain resource; The second frequency domain resource may be symmetrical or asymmetrical with respect to the first frequency domain resource. The method according to claim 6, characterized in that, The size of the second frequency domain resource is represented based on one or more of the following: the number of RBs occupied by the first channel bandwidth, the size of the first channel bandwidth, and a first proportionality coefficient. The method according to claim 7, characterized in that: The size of the second frequency domain resource is determined based on the product of the number of RBs occupied by the first channel bandwidth and the first proportional coefficient; and / or, The size of the second frequency domain resource is determined based on the product of the size of the first channel bandwidth and the first proportional coefficient. The method according to claim 7 or 8, characterized in that, The first proportionality coefficient satisfies one or more of the following: The first proportionality coefficient is less than or equal to 0.5; The first proportional coefficient is determined based on protocol predefined information, the configuration information of the network device, and / or the capability information of the terminal device. The method according to any one of claims 2 to 5, characterized in that, The second channel bandwidth is a fixed bandwidth predefined by the protocol. The method according to any one of claims 2 to 9, characterized in that, The second channel bandwidth is the channel bandwidth configured for a cell; or, terminal devices within a cell that support the first maximum power backoff value use the same second channel bandwidth. The method according to any one of claims 1 to 11, characterized in that, The first channel bandwidth includes the number of configurable RBs and / or guard bands within the first channel bandwidth. The method according to any one of claims 1 to 9 and 11 to 12 is characterized in that, The maximum power backoff value corresponding to the first RB is determined based on the first information sent by the network device. The method according to claim 13, characterized in that, The first information is used to indicate one or more of the following: The size of the second channel bandwidth; The offset in frequency domain position between the second channel bandwidth and the first channel bandwidth; The direction of the offset of the second channel bandwidth relative to the first channel bandwidth. The method according to any one of claims 2 to 11 and 14, characterized in that, The number of RBs occupied by the second channel bandwidth is greater than the number of RBs occupied by the first channel bandwidth. The method according to any one of claims 1 to 15, characterized in that, The method further includes: The terminal device sends a second message to the network device, the second message being used to instruct the terminal device to support the first maximum power backoff value. The method according to any one of claims 1 to 16, characterized in that, The method further includes: The terminal device receives third information sent by the network device, the third information being used to indicate that the terminal device is allowed to use the first maximum power backoff value. The method according to claim 17, characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier of the terminal device, and the third information is sent when the first condition is met; The first condition is associated with one or more of the following: The carrier bandwidth of the network device; Interference suppression requirements in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB; The terminal device is configured with multiple carriers. The method according to claim 18, characterized in that, The first condition includes one or more of the following: The carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device. There is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation; The terminal device is configured with multiple carriers, and all the remaining carriers except the carrier corresponding to the main cell are inactive. The method according to claim 17, characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, and the third information is sent when a second condition is met, wherein the second condition is associated with one or more of the following: Interference suppression requirements of neighboring resource segments of the first resource segment; Interference suppression requirements for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB. The method according to claim 20, characterized in that, The second condition includes one or more of the following: There is no interference suppression requirement in the adjacent resource segments of the first resource segment; There is no interference suppression requirement for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation. The method according to any one of claims 1 to 21, characterized in that, When the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device is determined based on the first maximum power backoff value. The method according to claim 22, characterized in that, The first maximum power backoff value is determined based on the second maximum power backoff value and the first adjustment amount, and the first adjustment amount is determined based on the first information. The method according to claim 23, characterized in that, The maximum transmit power is determined based on the difference between the first maximum power backoff value and the first adjustment amount. The method according to any one of claims 1 to 24, characterized in that, The method further includes: The terminal device transmits a power margin report to the network device. The power margin report includes fourth information and the maximum transmission power set by the terminal. The fourth information is used to indicate that the maximum transmission power is determined based on the first maximum power backoff value. The method according to claim 25, characterized in that, The fourth piece of information and the maximum transmit power are located in the same byte of the power margin report. The method according to any one of claims 1 to 26, characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, which is one of the following: one or more carriers, one or more bandwidth portions (BWPs), or one or more consecutive RBs. The method according to claim 27, characterized in that, The first resource segment belongs to a first resource set, and the first resource set further includes a second resource segment adjacent to the first resource segment. The first information is used to indicate a second channel bandwidth, and the second channel bandwidth includes one or more of the following: the first resource segment, the frequency domain spacing between the first resource segment and the second resource segment, and the second resource segment. The method according to any one of claims 1 to 19 and 22 to 26 is characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier configured by the terminal device. The first information is used to indicate the second channel bandwidth, which is equal to one of the following: the carrier bandwidth of the network device, or the total bandwidth of multiple carriers of the terminal device used for carrier aggregation. The method according to any one of claims 1 to 29, characterized in that, The terminal device uses either Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM) as the modulation method. A communication method, characterized in that, include: The network device sends first information to the terminal device. The first information is used to determine the maximum power backoff value corresponding to the first resource block (RB). The first RB is an external RB or an edge RB that is included in the first channel bandwidth allocated by the network device to the terminal device. The maximum power backoff value corresponding to the first RB includes a first maximum power backoff value and / or a second maximum power backoff value. The first maximum power backoff value is less than the second maximum power backoff value. The method according to claim 31, characterized in that: If the first RB is located within the inner RB region included in the second channel bandwidth, then the first RB corresponds to the first maximum power backoff value, wherein the second channel bandwidth is determined based on the first information. The method according to claim 32, characterized in that, The size of the second channel bandwidth is represented based on one or more of the following: the number of RBs, the ratio between the second channel bandwidth and the first channel bandwidth, the bandwidth predefined by the protocol, and megahertz. The method according to claim 32 or 33 is characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the start RB of the first channel bandwidth and the start RB of the second channel bandwidth; or, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the end RB of the first channel bandwidth and the end RB of the second channel bandwidth. The method according to any one of claims 32 to 34, characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is determined based on protocol predefined information and / or the configuration information of the network device. The method according to any one of claims 32 to 35, characterized in that, The frequency domain resources occupied by the second channel bandwidth include first frequency domain resources and second frequency domain resources. The first frequency domain resources are the same as the frequency domain resources occupied by the first channel bandwidth, and the second frequency domain resources satisfy one or more of the following: The second frequency domain resource is located on one or both sides of the first frequency domain resource; The second frequency domain resource may be symmetrical or asymmetrical with respect to the first frequency domain resource. The method according to claim 36, characterized in that, The size of the second frequency domain resource is represented based on one or more of the following: the number of RBs occupied by the first channel bandwidth, the size of the first channel bandwidth, and a first proportionality coefficient. The method according to claim 37, characterized in that: The size of the second frequency domain resource is determined based on the product of the number of RBs occupied by the first channel bandwidth and the first proportional coefficient; and / or, The size of the second frequency domain resource is determined based on the product of the size of the first channel bandwidth and the first proportional coefficient. The method according to claim 37 or 38, characterized in that, The first proportionality coefficient satisfies one or more of the following: The first proportionality coefficient is less than or equal to 0.5; The first proportional coefficient is determined based on protocol predefined information, the configuration information of the network device, and / or the capability information of the terminal device. The method according to any one of claims 32 to 39, characterized in that, The second channel bandwidth is a fixed bandwidth predefined by the protocol. The method according to any one of claims 32 to 40, characterized in that, The second channel bandwidth is the channel bandwidth configured for a cell; or, terminal devices within a cell that support the first maximum power backoff value use the same second channel bandwidth. The method according to any one of claims 31 to 41, characterized in that, The first channel bandwidth includes the number of configurable RBs and / or guard bands within the first channel bandwidth. The method according to claims 32 to 41, characterized in that, The first information is used to indicate one or more of the following: The size of the second channel bandwidth; The offset in frequency domain position between the second channel bandwidth and the first channel bandwidth; The direction of the offset of the second channel bandwidth relative to the first channel bandwidth. The method according to any one of claims 32 to 41 and 43 is characterized in that, The number of RBs occupied by the second channel bandwidth is greater than the number of RBs occupied by the first channel bandwidth. The method according to any one of claims 31 to 44 is characterized in that, The method further includes: The network device receives second information sent by the terminal device, the second information being used to instruct the terminal device to support the first maximum power backoff value. The method according to any one of claims 31 to 45 is characterized in that, The method further includes: The network device sends a third message to the terminal device, the third message indicating that the terminal device is allowed to use the first maximum power backoff value. The method according to claim 46, characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier of the terminal device, and the third information is sent when the first condition is met; The first condition is associated with one or more of the following: The carrier bandwidth of the network device; Interference suppression requirements in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB; The terminal device is configured with multiple carriers. The method according to claim 47, characterized in that, The first condition includes one or more of the following: The carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device. There is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation; The terminal device is configured with multiple carriers, and all the remaining carriers except the carrier corresponding to the main cell are inactive. The method according to claim 46, characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, and the third information is sent when a second condition is met, wherein the second condition is associated with one or more of the following: Interference suppression requirements of neighboring resource segments of the first resource segment; Interference suppression requirements for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB. The method according to claim 49, characterized in that, The second condition includes one or more of the following: There is no interference suppression requirement in the adjacent resource segments of the first resource segment; There is no interference suppression requirement for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation. The method according to any one of claims 31 to 50, characterized in that, When the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device is determined based on the first maximum power backoff value. The method according to claim 51, characterized in that, The first maximum power backoff value is determined based on the second maximum power backoff value and the first adjustment amount, and the first adjustment amount is determined based on the first information. The method according to claim 52, characterized in that, The maximum transmit power is determined based on the difference between the second maximum power backoff value and the first adjustment amount. The method according to any one of claims 31 to 53 is characterized in that, The method further includes: The network device receives a power margin report sent by the terminal device. The power margin report includes fourth information and the maximum transmit power set by the terminal. The fourth information is used to indicate that the maximum transmit power is determined based on the first maximum power backoff value. The method according to claim 54, characterized in that, The fourth piece of information and the maximum transmit power are located in the same byte of the power margin report. The method according to any one of claims 31 to 55, characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, which is one of the following: one or more carriers, one or more bandwidth portions (BWPs), or one or more consecutive RBs. The method according to claim 56, characterized in that, The first resource segment belongs to a first resource set, and the first resource set further includes a second resource segment adjacent to the first resource segment. The first information is used to indicate a second channel bandwidth, and the second channel bandwidth includes one or more of the following: the first resource segment, the frequency domain spacing between the first resource segment and the second resource segment, and the second resource segment. The method according to any one of claims 31 to 48 and 51 to 57 is characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier configured by the terminal device. The first information is used to indicate the second channel bandwidth, which is equal to one of the following: the carrier bandwidth of the network device, or the total bandwidth of multiple carriers of the terminal device used for carrier aggregation. The method according to any one of claims 31 to 58, characterized in that, The terminal device uses either Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM) as the modulation method. A communication device, characterized in that, The communication device is a terminal device, and the communication device includes: The determination module is used to determine the maximum power backoff value corresponding to the first resource block (RB), wherein the first RB is an external RB or edge RB included in the first channel bandwidth allocated by the network device to the terminal device, and the maximum power backoff value corresponding to the first RB includes a first maximum power backoff value and / or a second maximum power backoff value, wherein the first maximum power backoff value is less than the second maximum power backoff value. The communication device according to claim 60 is characterized in that: If the first RB is located within the inner RB region included in the second channel bandwidth, then the first RB corresponds to the first maximum power backoff value. The communication device according to claim 61 is characterized in that, The size of the second channel bandwidth is represented based on one or more of the following: the number of RBs, the ratio between the second channel bandwidth and the first channel bandwidth, the bandwidth predefined by the protocol, and megahertz. The communication device according to claim 61 or 62 is characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the start RB of the first channel bandwidth and the start RB of the second channel bandwidth; or, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the end RB of the first channel bandwidth and the end RB of the second channel bandwidth. The communication device according to any one of claims 61 to 63 is characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is determined based on protocol predefined information and / or the configuration information of the network device. The communication device according to any one of claims 61 to 64 is characterized in that, The frequency domain resources occupied by the second channel bandwidth include first frequency domain resources and second frequency domain resources. The first frequency domain resources are the same as the frequency domain resources occupied by the first channel bandwidth, and the second frequency domain resources satisfy one or more of the following: The second frequency domain resource is located on one or both sides of the first frequency domain resource; The second frequency domain resource may be symmetrical or asymmetrical with respect to the first frequency domain resource. The communication device according to claim 65 is characterized in that, The size of the second frequency domain resource is represented based on one or more of the following: the number of RBs occupied by the first channel bandwidth, the size of the first channel bandwidth, and a first proportionality coefficient. The communication device according to claim 66 is characterized in that: The size of the second frequency domain resource is determined based on the product of the number of RBs occupied by the first channel bandwidth and the first proportional coefficient; and / or, The size of the second frequency domain resource is determined based on the product of the size of the first channel bandwidth and the first proportional coefficient. The communication device according to claim 66 or 67 is characterized in that, The first proportionality coefficient satisfies one or more of the following: The first proportionality coefficient is less than or equal to 0.5; The first proportional coefficient is determined based on protocol predefined information, the configuration information of the network device, and / or the capability information of the terminal device. The communication device according to any one of claims 61 to 64 is characterized in that, The second channel bandwidth is a fixed bandwidth predefined by the protocol. The communication device according to any one of claims 61 to 68 is characterized in that, The second channel bandwidth is the channel bandwidth configured for a cell; or, terminal devices within a cell that support the first maximum power backoff value use the same second channel bandwidth. The communication device according to any one of claims 60 to 70 is characterized in that, The first channel bandwidth includes the number of configurable RBs and / or guard bands within the first channel bandwidth. The communication device according to any one of claims 60 to 68 and 70 to 71 is characterized in that, The maximum power backoff value corresponding to the first RB is determined based on the first information sent by the network device. The communication device according to claim 72 is characterized in that, The first information is used to indicate one or more of the following: The size of the second channel bandwidth; The offset in frequency domain position between the second channel bandwidth and the first channel bandwidth; The direction of the offset of the second channel bandwidth relative to the first channel bandwidth. The communication device according to any one of claims 61 to 70 and 73 is characterized in that, The number of RBs occupied by the second channel bandwidth is greater than the number of RBs occupied by the first channel bandwidth. The communication device according to any one of claims 60 to 74 is characterized in that, The communication device also includes: A communication module is used to send second information to the network device, the second information being used to instruct the terminal device to support the first maximum power backoff value. The communication device according to any one of claims 60 to 75 is characterized in that, The communication device also includes: A communication module is configured to receive third information sent by the network device, the third information being used to indicate that the terminal device is allowed to use the first maximum power backoff value. The communication device according to claim 76 is characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier of the terminal device, and the third information is sent when the first condition is met; The first condition is associated with one or more of the following: The carrier bandwidth of the network device; Interference suppression requirements in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB; The terminal device is configured with multiple carriers. The communication device according to claim 77 is characterized in that, The first condition includes one or more of the following: The carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device. There is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation; The terminal device is configured with multiple carriers, and all the remaining carriers except the carrier corresponding to the main cell are inactive. The communication device according to claim 76 is characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, and the third information is sent when a second condition is met, wherein the second condition is associated with one or more of the following: Interference suppression requirements of neighboring resource segments of the first resource segment; Interference suppression requirements for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB. The communication device according to claim 79 is characterized in that, The second condition includes one or more of the following: There is no interference suppression requirement in the adjacent resource segments of the first resource segment; There is no interference suppression requirement for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation. The communication device according to any one of claims 60 to 80, characterized in that, When the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device is determined based on the first maximum power backoff value. The communication device according to claim 81, characterized in that, The first maximum power backoff value is determined based on the second maximum power backoff value and the first adjustment amount, and the first adjustment amount is determined based on the first information. The communication device according to claim 82 is characterized in that, The maximum transmit power is determined based on the difference between the first maximum power backoff value and the first adjustment amount. The communication device according to any one of claims 60 to 83 is characterized in that, The communication device also includes: A communication module is configured to transmit a power margin report to the network device. The power margin report includes fourth information and the maximum transmission power set by the terminal. The fourth information is used to indicate that the maximum transmission power is determined based on the first maximum power backoff value. The communication device according to claim 84 is characterized in that, The fourth piece of information and the maximum transmit power are located in the same byte of the power margin report. The communication device according to any one of claims 60 to 85, characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, which is one of the following: one or more carriers, one or more bandwidth portions (BWPs), or one or more consecutive RBs. The communication device according to claim 86 is characterized in that, The first resource segment belongs to a first resource set, and the first resource set further includes a second resource segment adjacent to the first resource segment. The first information is used to indicate a second channel bandwidth, and the second channel bandwidth includes one or more of the following: the first resource segment, the frequency domain spacing between the first resource segment and the second resource segment, and the second resource segment. The communication device according to any one of claims 60 to 78 and 81 to 85 is characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier configured by the terminal device. The first information is used to indicate the second channel bandwidth, which is equal to one of the following: the carrier bandwidth of the network device, or the total bandwidth of multiple carriers of the terminal device used for carrier aggregation. The communication device according to any one of claims 60 to 88, characterized in that, The terminal device uses either Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM) as the modulation method. A communication device, characterized in that, The communication device is a network device, and the communication device includes: The communication module is used to send first information to the terminal device. The first information is used to determine the maximum power backoff value corresponding to the first resource block (RB). The first RB is an external RB or edge RB included in the first channel bandwidth allocated by the network device to the terminal device. The maximum power backoff value corresponding to the first RB includes a first maximum power backoff value and / or a second maximum power backoff value. The first maximum power backoff value is less than the second maximum power backoff value. The communication device according to claim 90 is characterized in that: If the first RB is located within the inner RB region included in the second channel bandwidth, then the first RB corresponds to the first maximum power backoff value, wherein the second channel bandwidth is determined based on the first information. The communication device according to claim 91 is characterized in that, The size of the second channel bandwidth is represented based on one or more of the following: the number of RBs, the ratio between the second channel bandwidth and the first channel bandwidth, the bandwidth predefined by the protocol, and megahertz. The communication device according to claim 91 or 92 is characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the start RB of the first channel bandwidth and the start RB of the second channel bandwidth; or, the offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is represented based on the offset of the frequency domain position between the end RB of the first channel bandwidth and the end RB of the second channel bandwidth. The communication device according to any one of claims 91 to 93 is characterized in that, The offset of the frequency domain position between the first channel bandwidth and the second channel bandwidth is determined based on protocol predefined information and / or the configuration information of the network device. The communication device according to any one of claims 91 to 94 is characterized in that, The frequency domain resources occupied by the second channel bandwidth include first frequency domain resources and second frequency domain resources. The first frequency domain resources are the same as the frequency domain resources occupied by the first channel bandwidth, and the second frequency domain resources satisfy one or more of the following: The second frequency domain resource is located on one or both sides of the first frequency domain resource; The second frequency domain resource may be symmetrical or asymmetrical with respect to the first frequency domain resource. The communication device according to claim 95 is characterized in that, The size of the second frequency domain resource is represented based on one or more of the following: the number of RBs occupied by the first channel bandwidth, the size of the first channel bandwidth, and a first proportionality coefficient. The communication device according to claim 96 is characterized in that: The size of the second frequency domain resource is determined based on the product of the number of RBs occupied by the first channel bandwidth and the first proportional coefficient; and / or, The size of the second frequency domain resource is determined based on the product of the size of the first channel bandwidth and the first proportional coefficient. The communication device according to claim 96 or 97 is characterized in that, The first proportionality coefficient satisfies one or more of the following: The first proportionality coefficient is less than or equal to 0.5; The first proportional coefficient is determined based on protocol predefined information, the configuration information of the network device, and / or the capability information of the terminal device. The communication device according to any one of claims 91 to 98 is characterized in that, The second channel bandwidth is a fixed bandwidth predefined by the protocol. The communication device according to any one of claims 91 to 99 is characterized in that, The second channel bandwidth is the channel bandwidth configured for a cell; or, terminal devices within a cell that support the first maximum power backoff value use the same second channel bandwidth. The communication device according to any one of claims 90 to 100 is characterized in that, The first channel bandwidth includes the number of configurable RBs and / or guard bands within the first channel bandwidth. The communication device according to claims 91 to 100 is characterized in that, The first information is used to indicate one or more of the following: The size of the second channel bandwidth; The offset in frequency domain position between the second channel bandwidth and the first channel bandwidth; The direction of the offset of the second channel bandwidth relative to the first channel bandwidth. The communication device according to any one of claims 91 to 100 and 102 is characterized in that, The number of RBs occupied by the second channel bandwidth is greater than the number of RBs occupied by the first channel bandwidth. The communication device according to any one of claims 90 to 103 is characterized in that, The communication module is also used for: The terminal device receives a second message, which indicates that the terminal device supports the first maximum power backoff value. The communication device according to any one of claims 90 to 104 is characterized in that, The communication module is also used for: A third message is sent to the terminal device, the third message indicating that the terminal device is allowed to use the first maximum power backoff value. The communication device according to claim 105 is characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier of the terminal device, and the third information is sent when the first condition is met; The first condition is associated with one or more of the following: The carrier bandwidth of the network device; Interference suppression requirements in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB; The terminal device is configured with multiple carriers. The communication device according to claim 106 is characterized in that, The first condition includes one or more of the following: The carrier bandwidth of the network device is greater than the carrier bandwidth of the terminal device. There is no interference suppression requirement in the adjacent frequency range of the current cell's frequency domain; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation; The terminal device is configured with multiple carriers, and all the remaining carriers except the carrier corresponding to the main cell are inactive. The communication device according to claim 105 is characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, and the third information is sent when a second condition is met, wherein the second condition is associated with one or more of the following: Interference suppression requirements of neighboring resource segments of the first resource segment; Interference suppression requirements for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device; The modulation scheme used by the terminal device; The RB allocation type corresponding to the first RB. The communication device according to claim 108 is characterized in that, The second condition includes one or more of the following: There is no interference suppression requirement in the adjacent resource segments of the first resource segment; There is no interference suppression requirement for the frequency domain spacing between the first resource segment and the adjacent resource segment; The power level of the terminal device is the first power level; The modulation method used by the terminal device is the first modulation method; The RB allocation type corresponding to the first RB is external RB allocation and / or edge RB allocation. The communication device according to any one of claims 90 to 109 is characterized in that, When the maximum power backoff value corresponding to the first RB is the first maximum power backoff value, the maximum transmit power of the terminal device is determined based on the first maximum power backoff value. The communication device according to claim 110 is characterized in that, The first maximum power backoff value is determined based on the second maximum power backoff value and the first adjustment amount, and the first adjustment amount is determined based on the first information. The communication device according to claim 111 is characterized in that, The maximum transmit power is determined based on the difference between the second maximum power backoff value and the first adjustment amount. The communication device according to any one of claims 90 to 112 is characterized in that, The communication module is also used for: The terminal device receives a power margin report, which includes fourth information and the maximum transmit power set by the terminal. The fourth information is used to indicate that the maximum transmit power is determined based on the first maximum power backoff value. The communication device according to claim 113 is characterized in that, The fourth piece of information and the maximum transmit power are located in the same byte of the power margin report. The communication device according to any one of claims 90 to 114 is characterized in that, The first channel bandwidth is the bandwidth corresponding to the first resource segment, which is one of the following: one or more carriers, one or more bandwidth portions (BWPs), or one or more consecutive RBs. The communication device according to claim 115 is characterized in that, The first resource segment belongs to a first resource set, and the first resource set further includes a second resource segment adjacent to the first resource segment. The first information is used to indicate a second channel bandwidth, and the second channel bandwidth includes one or more of the following: the first resource segment, the frequency domain spacing between the first resource segment and the second resource segment, and the second resource segment. The communication device according to any one of claims 90 to 107 and 110 to 116 is characterized in that, The first channel bandwidth is the carrier bandwidth corresponding to the carrier configured by the terminal device. The first information is used to indicate the second channel bandwidth, which is equal to one of the following: the carrier bandwidth of the network device, or the total bandwidth of multiple carriers of the terminal device used for carrier aggregation. The communication device according to any one of claims 90 to 117 is characterized in that, The terminal device uses either Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM) as the modulation method. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1 to 30 or 31 to 59. An apparatus characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as described in any one of claims 1 to 30 or 31 to 59. A chip characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 30 or 31 to 59. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1 to 30 or 31 to 59. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1 to 30 or 31 to 59. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1 to 30 or 31 to 59.

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