Communication method and related device

Abstract

Embodiments of the present application disclose a communication method and a related device. The method comprises: a first communication device receiving first information sent by a second communication device, wherein the first information indicates a first bandwidth, the first bandwidth is used as a reference bandwidth for executing uplink transmission by the first communication device, the bandwidth value of the first bandwidth is greater than the bandwidth value of a base station channel bandwidth (BS CBW), the reference bandwidth is used for determining radio frequency indicators when the first communication device executes uplink transmission, and the BS CBW is the bandwidth value of a single carrier supported by the second communication device in an uplink or a downlink; and on the basis of the first bandwidth, determining transmission power when the first communication device executes uplink transmission. Since the first bandwidth is greater than the BS CBW, the reference bandwidth is increased from the BS CBW to the first bandwidth, which is equivalent to relaxing the radio frequency indicators, so that the first communication device can perform uplink transmission by using higher transmission power, thereby improving the flexibility of configuring the maximum transmission power by the first communication device.

Description

A communication method and related apparatus

[0001] This application claims priority to Chinese Patent Application No. 202410703981.X, filed with the State Intellectual Property Office of China on May 31, 2024, entitled “A Communication Method and Related Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0003] In wireless communication networks, the transmit power of a terminal device is a key factor affecting the data it sends to network devices. The transmit power of a terminal device primarily depends on the power amplifier (PA). The PA's function is to convert low-power signals into high-power signals, thereby overcoming signal attenuation between the terminal device and the network device, ensuring that the network device receives a sufficiently strong signal. This transmit power directly affects communication quality; for example, low transmit power from the terminal device may lead to unstable communication.

[0004] The transmit power of terminal equipment is primarily limited by uplink radio frequency (RF) specifications. These specifications are designed to ensure the signal quality of the transmitted signal and that the interference it causes to other devices is within a reasonable level. Current uplink RF specifications include various metrics such as maximum power reduction (MPR), error vector magnitude (EVM), in-band emission (IBE), adjacent channel leakage ratio (ACLR), spectral emission mask (SEM), and spurious emission (SE).

[0005] With the development of communication technology, terminal equipment needs to flexibly adjust its transmission power. How to flexibly adjust the transmission power has become an urgent problem to be solved. Summary of the Invention

[0006] This application proposes a communication method that allows a terminal device to use higher transmission power when performing uplink transmission. This improves the flexibility of configuring the maximum transmission power of the terminal device.

[0007] In a first aspect, embodiments of this application propose a communication method applied to a first communication device. The first communication device may be a communication device (such as a terminal device or network device), or it may be a component of a communication device (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication device.

[0008] The first and second communication devices in this application embodiment can be implemented in several possible ways, as follows: In one possible implementation, the first communication device in this application embodiment can be a terminal device, and the second communication device can be a network device and / or a core network device. In another possible implementation, the first communication device in this application embodiment can be a network device, and the second communication device can be another network device and / or a core network device. In yet another possible implementation, the first communication device in this application embodiment can be a terminal device, and the second communication device can be another terminal device.

[0009] The method includes: a first communication device receiving first information sent by a second communication device, the first information indicating a first bandwidth, the first bandwidth being used as a reference bandwidth for the first communication device to perform uplink transmission, the bandwidth value of the first bandwidth being greater than the bandwidth value of the base station channel bandwidth BS CBW, the reference bandwidth being used to determine the radio frequency indicators when the first communication device performs uplink transmission, and BS CBW being the bandwidth value of a single carrier supported by the second communication device in the uplink or downlink; and determining the transmission power when the first communication device performs uplink transmission based on the first bandwidth.

[0010] In this embodiment, the second communication device instructs the first communication device to use a first bandwidth as a reference bandwidth, and then determines the radio frequency (RF) parameters for uplink transmission based on the first bandwidth. Since the first bandwidth is greater than the baseband (BS CBW), increasing the reference bandwidth from BS CBW to the first bandwidth is equivalent to relaxing the RF parameters, which helps the first communication device use higher transmit power for uplink transmission. This improves the flexibility of configuring the maximum transmit power of the first communication device.

[0011] In one possible implementation of the first aspect, the first information includes any one or more of the following: the start position of the first bandwidth, the end position of the first bandwidth, the bandwidth value of the first bandwidth, or a first offset, wherein the absolute value of the first offset is equal to the bandwidth value of the first bandwidth when summed with the bandwidth value of the BS CBW or the user equipment channel bandwidth UE CBW, where UE CBW is the bandwidth of a single carrier supported by the first communication device in the uplink or downlink.

[0012] Specifically, the starting position of the first bandwidth can be determined using a reference point in the frequency domain and an offset relative to that reference point. Similarly, the ending position of the first bandwidth can also be determined using a reference point in the frequency domain and an offset relative to that reference point.

[0013] In one possible implementation, the first information includes: the starting position of the first bandwidth and the bandwidth value of the first bandwidth.

[0014] In another possible implementation, the first information includes: the end position of the first bandwidth and the bandwidth value of the first bandwidth.

[0015] In another possible implementation, the first information includes a first offset. For example, the first offset may include a set of numbers, where one number indicates that the first bandwidth is offset in the frequency domain towards the increasing direction relative to the BS CBW or UE CBW, and the other number indicates that the first bandwidth is offset in the frequency domain towards the decreasing direction relative to the BS CBW or UE CBW. For example, taking the first offset as indicating the offset of the first bandwidth from the BS CBW, the BS CBW bandwidth value is 50MHz, the starting position of the BS CBW is pointA+100MHz, and the ending position of the BS CBW is pointA+150MHz, where pointA is the reference point of the BS CBW or UE CBW in the frequency domain. pointA is also called the common reference point, or absolute frequency point A, indicating the absolute frequency position of the reference resource block (general RB 0, i.e., CRB 0). If the first offset is (-10MHz, +10MHz), then the bandwidth value of the first bandwidth is 70MHz, the starting position of the first bandwidth is pointA+90MHz, and the ending position of the first bandwidth is pointA+160MHz.

[0016] Using the above method, the second communication device can indicate the first bandwidth to the first communication device in multiple ways, thereby improving the flexibility of the solution.

[0017] In one possible implementation of the first aspect, the first information includes one or more of the following: a first information element indicating the subcarrier spacing SCS corresponding to the first bandwidth; a second information element indicating the offset of the starting position of the first bandwidth from the common reference point pointA, where pointA indicates the center position of subcarrier 0 of common resource block CRB 0; or, a third information element indicating the bandwidth value of the first bandwidth.

[0018] In one possible implementation of the first aspect, the first information includes: a first multiple, or a second multiple, wherein the product of the first multiple and the UE CBW is equal to the bandwidth value of the first bandwidth, and the product of the second multiple and the BS CBW is equal to the bandwidth value of the first bandwidth.

[0019] For example, using a first multiple and the UE CBW, the start position, end position, and bandwidth value of the first bandwidth can be determined. Using a second multiple and the BS CBW, the start position, end position, and bandwidth value of the first bandwidth can be determined. For example, if the bandwidth value of the UE CBW is 50MHz, the start position of the UE CBW is pointA+100MHz, and the end position of the UE CBW is pointA+150MHz, where pointA is the reference point (also known as the common reference point) of the BS CBW or UE CBW in the frequency domain. If the first multiple is 2, then the bandwidth value of the first bandwidth is 100MHz, the start position of the first bandwidth is pointA+200MHz, and the end position of the first bandwidth is pointA+300MHz.

[0020] In one possible implementation of the first aspect, the first information includes one or more of the following: a second information element indicating the subcarrier spacing (SCS) corresponding to the first bandwidth; a fourth information element indicating the offset between the starting position of the first bandwidth and the starting position of the BS CBW, or the fourth information element indicating the offset between the starting position of the first bandwidth and the starting position of the UE CBW; or a fifth information element used to carry a first multiple or a second multiple.

[0021] In one possible implementation of the first aspect, the first offset indicates the offset of the start and / or end position of the UE CBW; or, the first offset indicates the offset of the start and / or end position of the BS CBW.

[0022] In one possible implementation of the first aspect, the radio frequency metrics include any one or more of the following: maximum power back-off (MPR), error vector magnitude (EVM), in-band transmit (IBE), adjacent channel leakage ratio (ACLR), spectrum transmit template (SEM), or spurious emissions (SE).

[0023] Using the above method, the first communication device can also use the first bandwidth as a reference bandwidth for one or more radio frequency indicators, and then determine the transmission power based on the above one or more radio frequency indicators, thereby improving the implementation flexibility of the scheme.

[0024] In one possible implementation of the first aspect, the bandwidth value of the first bandwidth is the bandwidth value of the second communication device transmitting and / or receiving one or more radio access technologies (RATs) within the operating frequency band supported by the second communication device; or, the bandwidth value of the first bandwidth is the sum of the base station channel bandwidths (BS CBW) within the operating frequency band supported by the second communication device; or, the bandwidth value of the first bandwidth is less than or equal to the bandwidth value of the base station radio frequency bandwidth (BS RF BW) of the second communication device.

[0025] In one possible implementation of the first aspect, the method further includes: sending a second message indicating that the first communication device supports configuring the transmit power of the first communication device based on a bandwidth value greater than BS CBW.

[0026] Using the above method, the first communication device can also report capability information (i.e., second information) to the second communication device so that the second communication device can configure a reference bandwidth greater than BS CBW for the first communication device based on the capability information, thereby avoiding configuring a reference bandwidth greater than BS CBW for the first communication device that does not support it and saving communication resources.

[0027] In one possible implementation of the first aspect, the method further includes: a first communication device receiving third information sent by a second communication device, the third information instructing the first communication device to use a first bandwidth as a reference bandwidth for the first communication device to perform uplink transmission; and the first communication device determining the first bandwidth as a reference bandwidth for the first communication device to perform uplink transmission based on the third information.

[0028] Using the above method, the second communication device can explicitly instruct the first communication device to use the first bandwidth as the reference bandwidth for performing uplink transmission, thereby improving the flexibility of the solution implementation.

[0029] In one possible implementation of the first aspect, the first information is carried in any of the following messages: Radio Resource Control (RRC) message, or System Message Block (SIB).

[0030] Secondly, embodiments of this application propose a communication method applied to a second communication device. The second communication device may be a communication device (such as a terminal device, network device, or core network device), or it may be a component of a communication device (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication device.

[0031] The method includes: a second communication device sending first information to a first communication device, the first information indicating a first bandwidth, the bandwidth value of the first bandwidth being greater than the bandwidth value of the base station channel bandwidth BS CBW, the first bandwidth being used as a reference bandwidth for the first communication device to perform uplink transmission, the reference bandwidth being used to determine the radio frequency indicators when the first communication device performs uplink transmission, and BS CBW being the bandwidth value of a single carrier supported by the second communication device in the uplink or downlink.

[0032] In this embodiment, the second communication device instructs the first communication device to use a first bandwidth as a reference bandwidth, and then determines the radio frequency (RF) parameters for uplink transmission based on the first bandwidth. Since the first bandwidth is greater than the baseband (BS CBW), increasing the reference bandwidth from BS CBW to the first bandwidth is equivalent to relaxing the RF parameters, which helps the first communication device use higher transmit power for uplink transmission. This improves the flexibility of configuring the maximum transmit power of the first communication device.

[0033] In one possible implementation of the second aspect, the first information includes any one or more of the following:

[0034] The first bandwidth is defined as the starting position, ending position, and bandwidth value of the first bandwidth, or the first offset, wherein the absolute value of the first offset is equal to the bandwidth value of the first bandwidth when summed with the bandwidth value of the BS CBW or the user equipment channel bandwidth UE CBW, where UE CBW is the bandwidth of a single carrier supported by the first communication device in the uplink or downlink.

[0035] Specifically, the starting position of the first bandwidth can be determined using a reference point in the frequency domain and an offset relative to that reference point. Similarly, the ending position of the first bandwidth can also be determined using a reference point in the frequency domain and an offset relative to that reference point.

[0036] In one possible implementation, the first information includes: the starting position of the first bandwidth and the bandwidth value of the first bandwidth.

[0037] In another possible implementation, the first information includes: the end position of the first bandwidth and the bandwidth value of the first bandwidth.

[0038] In another possible implementation, the first information includes a first offset. For example, the first offset may include a set of numbers, where one number indicates that the first bandwidth is offset in the frequency domain towards the increasing frequency domain relative to the BS CBW or UE CBW, and the other number indicates that the first bandwidth is offset in the frequency domain towards the decreasing frequency domain relative to the BS CBW or UE CBW. For example, taking the first offset as an indication of the offset of the first bandwidth from the BS CBW, where the BS CBW bandwidth value is 50MHz, the starting position of the BS CBW is pointA+100MHz, and the ending position of the BS CBW is pointA+150MHz, and the first offset is (-10MHz, +10MHz), then it indicates that the first bandwidth value is 70MHz, the starting position of the first bandwidth is pointA+90MHz, and the ending position of the first bandwidth is pointA+160MHz.

[0039] Using the above method, the second communication device can indicate the first bandwidth to the first communication device in multiple ways, thereby improving the flexibility of the solution.

[0040] In one possible implementation of the second aspect, the first information includes one or more of the following: a first information element indicating the subcarrier spacing SCS corresponding to the first bandwidth; a second information element indicating the offset of the starting position of the first bandwidth from the common reference point pointA, where pointA indicates the center position of subcarrier 0 of common resource block CRB 0; or, a third information element indicating the bandwidth value of the first bandwidth.

[0041] In one possible implementation of the second aspect, the first information includes: a first multiple, or a second multiple, wherein the product of the first multiple and the UE CBW is equal to the bandwidth value of the first bandwidth, and the product of the second multiple and the BS CBW is equal to the bandwidth value of the first bandwidth.

[0042] In one possible implementation of the second aspect, the first information includes one or more of the following: a second information element indicating the subcarrier spacing (SCS) corresponding to the first bandwidth; a fourth information element indicating the offset between the starting position of the first bandwidth and the starting position of the BS CBW, or the fourth information element indicating the offset between the starting position of the first bandwidth and the starting position of the UE CBW; or a fifth information element used to carry the first multiple or the second multiple.

[0043] In one possible implementation of the second aspect, the first offset indicates the offset of the start and / or end position of the UE CBW; or, the first offset indicates the offset of the start and / or end position of the BS CBW.

[0044] In one possible implementation of the second aspect, the radio frequency metrics include any one or more of the following: maximum power back-off (MPR), error vector magnitude (EVM), in-band transmit (IBE), adjacent channel leakage ratio (ACLR), spectrum transmit template (SEM), or spurious emissions (SE).

[0045] Using the above method, the first communication device can also use the first bandwidth as a reference bandwidth for one or more radio frequency indicators, and then determine the transmission power based on the above one or more radio frequency indicators, thereby improving the implementation flexibility of the scheme.

[0046] In one possible implementation of the second aspect, the bandwidth value of the first bandwidth is the bandwidth value of the second communication device transmitting and / or receiving one or more radio access technologies (RATs) within the operating frequency band supported by the second communication device; or, the bandwidth value of the first bandwidth is the sum of the base station channel bandwidths (BS CBW) within the operating frequency band supported by the second communication device; or, the bandwidth value of the first bandwidth is less than or equal to the bandwidth value of the base station radio frequency bandwidth (BS RF BW) of the second communication device.

[0047] In one possible implementation of the second aspect, the method further includes:

[0048] The second communication device receives second information, which instructs the first communication device to support configuring its transmit power based on a bandwidth value greater than the BS CBW. Then, the second communication device sends first information to the first communication device according to the second information.

[0049] Using the above method, the first communication device can also report capability information (i.e., second information) to the second communication device so that the second communication device can configure a reference bandwidth greater than BS CBW for the first communication device based on the capability information, thereby avoiding configuring a reference bandwidth greater than BS CBW for the first communication device that does not support it and saving communication resources.

[0050] In one possible implementation of the second aspect, the method further includes: sending third information, the third information instructing the first communication device to use the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission.

[0051] Using the above method, the second communication device can explicitly instruct the first communication device to use the first bandwidth as the reference bandwidth for performing uplink transmission, thereby improving the flexibility of the solution implementation.

[0052] In one possible implementation of the second aspect, the first information is carried in any of the following messages: Radio Resource Control (RRC) message, or System Message Block (SIB).

[0053] A third aspect of this application provides a communication device, which is a first communication device, and the device includes a transceiver unit and a processing unit.

[0054] In the third aspect of this application, the constituent modules of the communication device can also be used to execute the steps performed in various possible implementations of the first aspect and achieve the corresponding technical effects. For details, please refer to the first aspect, which will not be repeated here.

[0055] The fourth aspect of this application provides a communication device, which is a second communication device, and the device includes a transceiver unit and a processing unit.

[0056] In the fourth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be repeated here.

[0057] The fifth aspect of this application provides a communication device including at least one processor coupled to a memory; the memory is used to store a program or instructions; the at least one processor is used to execute the program or instructions to enable the device to implement the method described in any possible implementation of the first or second aspect.

[0058] The sixth aspect of this application provides a communication device including at least one logic circuit and an input / output interface; the logic circuit is used to perform the method described in any of the possible implementations of the first or second aspect described above.

[0059] The seventh aspect of this application provides a communication system, which includes the first communication device and / or the second communication device described above.

[0060] Optionally, the communication system may also include other communication devices that communicate with the first or second communication device.

[0061] An eighth aspect of this application provides a computer-readable storage medium for storing one or more computer-executable instructions that, when executed by a processor, perform the method as described in any possible implementation of the first or second aspect above.

[0062] The ninth aspect of this application provides a computer program product (or computer program) that, when executed by a processor, performs the method described in any possible implementation of the first or second aspect described above.

[0063] The tenth aspect of this application provides a chip or chip system including at least one processor for supporting a communication device in implementing the method described in any possible implementation of the first or second aspect above.

[0064] In one possible design, the chip or chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices. Optionally, the chip system may also include interface circuitry that provides program instructions and / or data to the at least one processor.

[0065] The technical effects of any of the design methods in aspects three through ten can be found in the technical effects of different design methods in aspects one or two above, and will not be repeated here. Attached Figure Description

[0066] Figure 1 is a frequency domain diagram corresponding to the uplink radio frequency indicators;

[0067] Figure 2 is a schematic diagram showing the relationship between the input signal and the output signal of PA;

[0068] Figure 3 is a schematic diagram of the primary restricted RF indicator;

[0069] Figure 4 is a schematic diagram of the MPR and RB allocation positions;

[0070] Figure 5 is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application;

[0071] Figure 6 is a schematic flowchart of an embodiment of the communication method proposed in this application;

[0072] Figure 7 shows another schematic diagram of the MPR and RB allocation positions;

[0073] Figure 8 is a schematic diagram of the communication device provided in this application;

[0074] Figure 9 is another schematic diagram of the communication device provided in this application;

[0075] Figure 10 is another schematic diagram of the communication device provided in this application;

[0076] Figure 11 is another schematic diagram of the communication device provided in this application. Detailed Implementation

[0077] First, some terms used in the embodiments of this application will be explained to facilitate understanding by those skilled in the art.

[0078] (1) Terminal device: can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and / or data connectivity to the user, or a handheld device with wireless connection function, or other processing device connected to a wireless modem.

[0079] Terminal devices can communicate with one or more core networks or the Internet via a radio access network (RAN). Terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones), computers, and data cards. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets, and computers with wireless transceiver capabilities. Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, subscriber station (SS), customer premises equipment (CPE), terminal, user equipment (UE), mobile terminal (MT), etc.

[0080] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices or smart wearable devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0081] Terminals can also be drones, robots, devices for device-to-device (D2D) communication, vehicles for everything (V2X), virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes, etc.

[0082] Furthermore, terminal devices can also be terminal devices in communication systems evolved from fifth-generation (5G) communication systems (such as sixth-generation (6G) communication systems) or in future public land mobile networks (PLMNs). For example, 6G networks can further expand the form and function of 5G communication terminals; 6G terminals include, but are not limited to, vehicles, cellular network terminals (integrating satellite terminal functions), drones, and Internet of Things (IoT) devices.

[0083] (2) Network equipment: This can be equipment within a wireless network. For example, network equipment can be a RAN node (or device) that connects terminal devices to the wireless network, and can also be called a base station. Currently, some examples of RAN equipment include: base station, evolved NodeB (eNodeB), gNB (gNodeB) in 5G communication systems, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wi-Fi) access point (AP), etc. In addition, in a network structure, network equipment can include centralized unit (CU) nodes, distributed unit (DU) nodes, or RAN equipment including CU nodes and DU nodes.

[0084] Optionally, RAN nodes can also be macro base stations, micro base stations, indoor stations, relay nodes, donor nodes, or radio controllers in cloud radio access network (CRAN) scenarios. RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU).

[0085] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with each RAN node performing a portion of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0086] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an open access network (open RAN, O-RAN, or ORAN) system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0087] Communication between access network devices and terminal devices follows a specific protocol layer structure. This protocol layer may include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer may include at least one of the following: radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, media access control (MAC) layer, or physical (PHY) layer, etc. The user plane protocol layer may include at least one of the following: service data adaptation protocol (SDAP) layer, PDCP layer, RLC layer, MAC layer, or physical layer, etc.

[0088] The correspondence between network elements and their achievable protocol layer functions in the ORAN system can be found in Table 1 below.

[0089] Table 1

[0090] Network devices can be other devices that provide wireless communication functions for terminal devices. The embodiments of this application do not limit the specific technology or form of the network device. For ease of description, the embodiments of this application are not limited.

[0091] Network equipment may also include core network equipment, such as the Mobility Management Entity (MME), Home Subscriber Server (HSS), Serving Gateway (S-GW), Policy and Charging Rules Function (PCRF), and Public Data Network Gateway (PDN Gateway, P-GW) in 4th generation (4G) networks; and access and mobility management function (AMF), user plane function (UPF), or session management function (SMF) in 5G networks. Furthermore, this core network equipment may also include other core network equipment in 5G networks and next-generation networks of 5G networks.

[0092] In this application embodiment, the device for implementing the function of the network device can be the network device itself, or it can be a device capable of supporting the network device in implementing that function, such as a chip system, which can be installed in the network device. In the technical solutions provided in this application embodiment, the example of a network device being used to implement the function of the network device is used to describe the technical solutions provided in this application embodiment.

[0093] (3) Configuration and Pre-configuration: In this application, both configuration and pre-configuration are used. Configuration refers to the network device and / or server sending configuration information or parameter values ​​to the terminal via messages or signaling, so that the terminal can determine communication parameters or resources for transmission based on these values ​​or information. Pre-configuration is similar to configuration; it can be parameter information or parameter values ​​pre-negotiated between the network device and / or server and the terminal device, or parameter information or parameter values ​​specified by standard protocols for use by the base station / network device or terminal device, or parameter information or parameter values ​​pre-stored in the base station and / or server or terminal device. This application does not limit this.

[0094] Furthermore, these values ​​and parameters can be changed or updated.

[0095] (4) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, sequence, priority or importance of multiple objects.

[0096] (5) In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include sending directly through the air interface or sending indirectly through the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include receiving directly from YY through the air interface or receiving indirectly from YY through the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0097] In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, wiring, or interfaces.

[0098] It is understandable that information may undergo necessary processing, such as encoding and modulation, between the source and destination, but the destination can understand the valid information from the source. Similar statements in this application can be interpreted in a similar way and will not be elaborated further.

[0099] (6) In the embodiments of this application, "instruction" may include direct instruction and indirect instruction, as well as explicit instruction and implicit instruction. The information indicated by a certain piece of information (as described below, the instruction information) is called the information to be instructed. In the specific implementation process, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is an association between the other information and the information to be instructed; or it can only indicate a part of the information to be instructed, while the other parts of the information to be instructed are known or pre-agreed upon. For example, the instruction can be implemented by using a pre-agreed (e.g., protocol predefined) arrangement order of various information, thereby reducing the instruction overhead to a certain extent. This application does not limit the specific method of instruction. It is understood that for the sender of the instruction information, the instruction information can be used to indicate the information to be instructed, and for the receiver of the instruction information, the instruction information can be used to determine the information to be instructed.

[0100] (7) Transmit power and uplink radio frequency (RF) indicators.

[0101] In wireless communication networks, the transmit power of a terminal device is a key factor affecting the data it sends to network devices. The transmit power of a terminal device primarily depends on the power amplifier (PA). The PA's function is to convert low-power signals into high-power signals, thereby overcoming signal attenuation between the terminal device and the network device, ensuring that the network device receives a sufficiently strong signal. This transmit power directly affects communication quality; for example, low transmit power from the terminal device may lead to unstable communication.

[0102] The transmit power of a terminal device is primarily limited by its uplink radio frequency (RF) specifications. These specifications are designed to ensure the signal quality of the terminal device's transmitted signal and that the interference it causes to other devices is within a reasonable level. In this embodiment, the uplink direction refers to the direction from the terminal device to the network device, and the corresponding downlink direction refers to the direction from the network device to the terminal device. For example, please refer to Figure 1, which is a frequency domain diagram corresponding to the uplink RF specifications. Current uplink RF specifications include various metrics, such as error vector magnitude (EVM), in-band emission (IBE), adjacent channel leakage ratio (ACLR), spectral emission mask (SEM), and spurious emission (SE).

[0103] The core components of a power amplifier (PA) are semiconductor devices such as transistors; therefore, PAs exhibit nonlinear characteristics. In one example, the relationship between the input and output signals of a PA is as follows:

[0104] Where x(t) is the input signal of the PA, y(t) is the output signal of the PA, n is the model order, and a is the coefficient corresponding to each order in the model. The amplitude curve of the above equation in the time domain is shown in Figure 2, which is a schematic diagram of the relationship between the input signal and the output signal of the PA. Due to the existence of higher orders, signal compression occurs at high power, i.e., nonlinear effects. The harmonics and intermodulation distortion generated by the nonlinear interaction between the input signal and the PA will lead to a decrease in signal quality, thereby affecting the effective transmission of information and reducing communication performance. In addition, since nonlinear effects generate abundant higher-order harmonics and intermodulation products, these products may fall into adjacent channels, thereby causing electromagnetic interference to the signals transmitted in adjacent channels, seriously affecting the effective utilization of spectrum resources.

[0105] As the transmit power of terminal devices increases, at least one of the aforementioned uplink RF metrics becomes the primary limiting RF metric affecting nonlinearity. For clarity, please refer to Figure 3, which illustrates the primary limiting RF metrics. Figure 3 uses a 50 MHz reference bandwidth and a quadrature phase shift keying (QPSK) modulation scheme with a reference bandwidth of 50 MHz. In Figure 3, the horizontal axis (X-axis) represents the starting position (rb_start) of the resource block (RB) scheduled by the network device within the reference bandwidth (50 MHz), and the vertical axis (Y-axis) represents the number of RBs scheduled by the network device within the reference bandwidth (50 MHz) (rb_number). Each two-dimensional coordinate point in Figure 3 illustrates the scheduling resources allocated by the network device to the terminal device, including the starting position and number of RBs, as well as the corresponding primary limiting RF metric. As shown in Figure 3, different scheduling resources correspond to different primary limiting RF metrics.

[0106] Considering the severe nonlinearity of the PA at high transmit power, which fails to meet RF specifications, the maximum transmit power of the terminal device can be reduced. For example, the maximum transmit power of the terminal device is determined by maximum power reduction (MPR). Specifically, the current maximum transmit power of the terminal device is: P CMAX,f,c ;

[0107] Among them, P CMAX_L,f,c It is P CMAX,f,c The lower limit, P CMAX_H,f,c It is P CMAX,f,c The upper limit of P. EMAX,c The maximum transmit power configured for the terminal device by the network device, and the power class (PC) capability reported by the terminal device to the network device is P. PowerClass ΔP PowerBoost For the inner RB allocations, the allowable power increase is ΔP. PowerClassPower back-off is permitted for terminal devices under certain circumstances. ΔMPR, A-MPR (Additional Maximum Power Back-off), and P-MPR represent corresponding power back-offs under different conditions. These back-off parameters take into account the severe PA nonlinearity at high power, which may prevent the defined RF specifications from being met. MPR primarily considers factors such as different RB allocation regions, different modulation schemes, and different waveforms. ΔMPR allows for further back-off due to excessively large operating bandwidth. A-MPR allows for additional power back-off because radiation standards are set very low in some regions. Human body radiation is regulated by local regulations; P-MPR ensures that human body radiation standards are not exceeded through power back-off.

[0108] One factor affecting MPR is the RB allocation region, which refers to the relative position of the RBs (i.e., the frequency domain resources included in the scheduling resources, specifically the starting position and number of RBs) to the reference bandwidth. Specifically, the RB allocation regions include: inner RB allocations, outer RB allocations, and edge RB allocations.

[0109] RB starting position in the internal RB allocation region Start And the number of RBs L CRB The following conditions must be met: RB Start,Low ≤RB Start ≤RB Start,High； L CRB ≤ceil(N RB / 2);

[0110] Among them RB Start,Low =max(1,floor(L) CRB / 2)), RB Start,High =N RB –RB Start,Low –L CRB N RB The maximum number of RBs is the reference bandwidth. This can be understood as different RB allocation areas being divided based on the reference bandwidth. ceil is the smallest integer greater than or equal to NRB / 2. If the area allocated to an RB is neither an internal RB allocation area nor an edge RB allocation area, then the allocation area of ​​that RB is an external RB allocation area.

[0111] Generally, the MPR (Maximum Transmit Power) follows this pattern: the MPR of the internal RB (Resource Block) allocation region is lower than that of the external RB allocation region, and the MPR of the external RB allocation region is lower than that of the edge RB allocation region. Since different RB allocation regions correspond to different MPRs, and the relative position of the frequency domain resources of the scheduling resources (the starting position and number of RBs) to the reference bandwidth determines the RB allocation region, choosing different reference bandwidths will affect the MPR, assuming the frequency domain resources of the scheduling resources remain unchanged. The reference bandwidth will affect the MPR of the terminal device's maximum transmit power, and the MPR is a key factor in determining whether the terminal device meets the uplink RF specifications. Therefore, the uplink RF specifications of the terminal device actually need to be designed based on the reference bandwidth.

[0112] Currently, the reference bandwidth for terminal devices is either the base station channel bandwidth (BS CBW) or the user equipment channel bandwidth (UE CBW). Specifically, when the network device configures the UE CBW for the terminal device, the reference bandwidth of the terminal device is the UE CBW; when the network device does not configure the UE CBW for the terminal device, the reference bandwidth of the terminal device is the BS CBW. BS CBW refers to the bandwidth of a single carrier supported by the network device in the uplink or downlink. UE CBW refers to the bandwidth of a single carrier supported by the terminal device in the uplink or downlink.

[0113] With the development of communication technology, terminal devices need to be able to adjust their maximum transmission power more flexibly, which in turn requires network devices to configure reference bandwidth more flexibly for terminal devices.

[0114] Based on this, in this embodiment, the first communication device receives first information sent by the second communication device. The first information indicates a first bandwidth, the bandwidth value of which is greater than the bandwidth value of the base station channel bandwidth (BS CBW). The first bandwidth serves as a reference bandwidth for the first communication device to perform uplink transmission. The reference bandwidth is used to determine the radio frequency parameters when the first communication device performs uplink transmission. BS CBW is the bandwidth value of a single carrier supported by the second communication device in the uplink or downlink. Based on the first bandwidth, the transmit power of the first communication device when performing uplink transmission is determined. In this embodiment, the second communication device configures the first bandwidth as a reference bandwidth for the first communication device to perform uplink transmission. The bandwidth value of the first bandwidth is greater than the bandwidth value of BS CBW, allowing the first communication device to use a larger transmit power when performing uplink transmission. This improves the flexibility of the first communication device in configuring its maximum transmit power.

[0115] The embodiments of this application will now be described with reference to the accompanying drawings.

[0116] First, the first communication device and the second communication device in the embodiments of this application can be implemented in a variety of ways, as follows:

[0117] In one possible implementation, the first communication device in this application embodiment may be a terminal device, and the second communication device may be a network device and / or a core network device.

[0118] In another possible implementation, the first communication device in this application embodiment can be a network device, and the second communication device can be another network device and / or core network device.

[0119] In another possible implementation, the first communication device in this application embodiment can be a terminal device, and the second communication device can be another terminal device.

[0120] In this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and the various methods / designs / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various methods / designs / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various methods / designs / implementations within each embodiment can be combined to form new embodiments, methods, or implementations based on their inherent logical relationships. The following embodiments of this application do not constitute a limitation on the scope of protection of this application.

[0121] This application can be applied to long-term evolution (LTE) systems, new radio (NR) systems, or communication systems evolving after 5G (such as 6G). These communication systems include at least one network device and / or at least one terminal device.

[0122] For ease of understanding, please refer to Figure 5, which is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application.

[0123] As shown in Figure 5, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (which can also be understood as a network device described above, such as 110a and 110b in Figure 5), and may also include at least one terminal (which can also be understood as a terminal device described above, such as 120a-120j in Figure 5). Furthermore, the wireless access network device may be a macro base station (as shown in Figure 5, 110a), a micro base station or an indoor station (as shown in Figure 5, 110b), or a relay node or donor node, etc. It is understood that all or part of the functions of the wireless access network device in this application may also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The embodiments of this application do not limit the specific technology or specific device form used in the wireless access network device.

[0124] For ease of description, we will use a base station as a wireless access network device and terminal devices as terminals as an example. It is understood that when the communication system includes an integrated access and backhaul (IAB) network, the base station can be an IAB node.

[0125] In this application, the base station and the terminal can be fixed or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, on water, or in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base station and the terminal.

[0126] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 5 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 via 120i, terminal 120i is a base station. However, for base station 110a, 120i is a terminal; that is, 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 5 can be called communication devices with base station functions, and 120a-120j in Figure 5 can be called communication devices with terminal functions.

[0127] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be achieved using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0128] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the application scenarios of the aforementioned terminals, such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0129] In this application, the base station transmits downlink signals (or downlink information) to the terminal, and the downlink signals (or downlink information) are carried on the downlink channel. The terminal transmits uplink signals (or uplink information) to the base station, and the uplink signals (or uplink information) are carried on the uplink channel.

[0130] It should be understood that this application can be applied to long-term evolution (LTE) systems, new radio (NR) systems, or communication systems evolving after 5G (such as 6G). These communication systems include network equipment and terminal equipment.

[0131] Please refer to Figure 6, which is a schematic flowchart of an embodiment of the communication method proposed in this application. An embodiment of the communication method proposed in this application includes:

[0132] For ease of description, the embodiment illustrated in Figure 6 is described using the example of a first communication device being a terminal device and a second communication device being a network device.

[0133] S1. The first communication device sends second information to the second communication device, the second information indicating that the first communication device supports configuring the transmission power of the first communication device based on a bandwidth value greater than the base station channel bandwidth BS CBW.

[0134] Step S1 is an optional step.

[0135] In step S1, the first communication device may report second information to the second communication device, the second information indicating that the first communication device supports configuring its transmit power based on a bandwidth value greater than the base station channel bandwidth. The base station channel bandwidth is the bandwidth value of a single carrier supported by the second communication device in the uplink or downlink.

[0136] In another alternative implementation, the second information indicates that the first communication device supports configuring its transmit power based on the base station radio frequency bandwidth (BS RF BW). The BS RF BW is the bandwidth within the operating frequency band supported by the second communication device for simultaneously transmitting and / or receiving a single carrier or multiple carriers. Alternatively, the BS RF BW is the bandwidth within the operating frequency band supported by the second communication device for simultaneously transmitting and / or receiving a single radio access technology (RAT) or multiple RATs. The bandwidth value of multiple RATs refers to the bandwidth values ​​of multiple network standards, such as the bandwidth value of LTE, the bandwidth value of NR, and / or the bandwidth value of 6G, etc.

[0137] After receiving the second information, the second communication device determines, based on the second information, that the first communication device supports a bandwidth value greater than BS CBW and configures the transmission power of the first communication device accordingly. Then, proceeding to step S2, the second communication device sends the first information to the first communication device.

[0138] S2. The second communication device sends first information to the first communication device. The first information indicates a first bandwidth, and the bandwidth value of the first bandwidth is greater than the base station channel bandwidth.

[0139] In step S2, the second communication device sends first information to the first communication device. The first information indicates a first bandwidth, the value of which is greater than the bandwidth value of the BS CBW. The first bandwidth is used as a reference bandwidth for the first communication device to perform uplink transmission. This reference bandwidth is used to determine the radio frequency parameters when the first communication device performs uplink transmission.

[0140] First, let's introduce the first bandwidth. The first bandwidth of this application includes several possible implementations:

[0141] In one possible implementation, the bandwidth value of the first bandwidth is the bandwidth value of the second communication device transmitting and / or receiving one or more Radio Access Technologies (RATs) within the operating frequency band supported by the second communication device.

[0142] In another possible implementation, the bandwidth value of the first bandwidth is the sum of the base station channel bandwidths (BS CBWs) within the operating frequency band supported by the second communication device. For example, if the second communication device supports multiple BS CBWs, then the bandwidth value of the first bandwidth can be the sum of the bandwidth values ​​of any one or more of those multiple BS CBWs.

[0143] In another possible implementation, the bandwidth value of the first bandwidth is less than or equal to the bandwidth value of the base station radio frequency bandwidth BS RF BW of the second communication device.

[0144] In another possible implementation, the bandwidth value of the first bandwidth is greater than the UE CBW, or the BS CBW.

[0145] Secondly, the first information includes various types of information. The first information includes any one or more of the following: the start position of the first bandwidth, the end position of the first bandwidth, the bandwidth value of the first bandwidth, or, the first offset, wherein the absolute value of the first offset and the bandwidth value of the BS CBW or the user equipment channel bandwidth UE CBW are equal to the bandwidth value of the first bandwidth, where UE CBW is the bandwidth of a single carrier supported by the first communication device in the uplink or downlink.

[0146] Specifically, the starting position of the first bandwidth can be determined using a reference point in the frequency domain and the offset relative to that reference point.

[0147] Similarly, the end position of the first bandwidth can also be determined using a reference point in the frequency domain and the offset relative to that reference.

[0148] The first offset will be explained below:

[0149] In one possible implementation, the starting position of the first bandwidth can be determined based on the first offset and the starting position of the UE CBW. For example, if the bandwidth value of the UE CBW is 50MHz, the starting position of the UE CBW is pointA+100MHz, and the ending position of the UE CBW is pointA+150MHz, with pointA serving as a reference point for the UE CBW or BS CBW in the frequency domain. If the first offset is 10MHz, then the bandwidth value of the first bandwidth is 60MHz, the starting position of the first bandwidth is pointA+90MHz, and the ending position of the first bandwidth is pointA+150MHz.

[0150] Point A, also known as the common reference point or absolute frequency point A, indicates the absolute frequency position of the reference resource block (general RB 0, i.e., CRB 0).

[0151] In another possible implementation, the end position of the first bandwidth can be determined based on the first offset and the end position of the UE CBW. For example, if the bandwidth value of the UE CBW is 50MHz, the start position of the UE CBW is pointA+100MHz, and the end position of the UE CBW is pointA+150MHz, then a first offset of 10MHz indicates that the bandwidth value of the first bandwidth is 60MHz, the start position of the first bandwidth is pointA+100MHz, and the end position of the first bandwidth is pointA+160MHz.

[0152] In another possible implementation, the starting position of the first bandwidth can be determined based on the first offset and the starting position of the BS CBW. For example, if the bandwidth value of the BS CBW is 120MHz, the starting position of the BS CBW is pointA+100MHz, and the ending position of the BS CBW is pointA+220MHz, then a first offset of 10MHz indicates a bandwidth value of 130MHz, a starting position of pointA+90MHz, and an ending position of pointA+220MHz.

[0153] In another possible implementation, the end position of the first bandwidth can be determined based on the first offset and the end position of the BS CBW. For example, if the bandwidth value of the BS CBW is 120MHz, the start position of the BS CBW is pointA+100MHz, and the end position of the BS CBW is pointA+220MHz, then a first offset of 10MHz indicates that the bandwidth value of the first bandwidth is 130MHz, the start position of the first bandwidth is pointA+100MHz, and the end position of the first bandwidth is pointA+230MHz.

[0154] In another possible implementation, the start and end positions of the first bandwidth can be determined based on the first offset and the start and end positions of the UE CBW (or the start and end positions of the BS CBW). For example, if the bandwidth value of the UE CBW is 50MHz, the start position of the UE CBW is pointA+100MHz, and the end position of the UE CBW is pointA+150MHz, then a first offset of 10MHz indicates that the bandwidth value of the first bandwidth is 70MHz, the start position of the first bandwidth is pointA+90MHz, and the end position of the first bandwidth is pointA+160MHz.

[0155] In another possible implementation, the first offset can be a positive number. The first offset indicates that the first bandwidth is offset (also known as a backward offset) relative to the BS CBW or UE CBW in the frequency domain in the direction of increasing frequency domain. For example, taking the first offset as indicating the offset of the first bandwidth from the BS CBW, if the BS CBW bandwidth is 50MHz, the starting position of the BS CBW is pointA+100MHz, and the ending position of the BS CBW is pointA+150MHz, then a first offset of +10MHz indicates that the first bandwidth is 60MHz, the starting position of the first bandwidth is pointA+100MHz, and the ending position of the first bandwidth is pointA+160MHz.

[0156] Understandably, the first offset is negative, and the first offset can also indicate that the first bandwidth is offset in the frequency domain towards the direction of decreasing frequency domain relative to the BS CBW or UE CBW (also known as forward offset).

[0157] In another possible implementation, the first offset can be negative, indicating that the first bandwidth is offset in the frequency domain towards a decreasing direction relative to the BS CBW or UE CBW. For example, taking the first offset as an indication of the offset of the first bandwidth from the BS CBW, the BS CBW bandwidth value is 50MHz, the starting position of the BS CBW is pointA+100MHz, and the ending position of the BS CBW is pointA+150MHz. If the first offset is -10MHz, it indicates that the first bandwidth value is 60MHz, the starting position of the first bandwidth is pointA+90MHz, and the ending position of the first bandwidth is pointA+150MHz.

[0158] Understandably, the first offset is negative, and the first offset can also indicate that the first bandwidth is offset in the frequency domain towards the direction of increasing frequency domain relative to the BS CBW or UE CBW.

[0159] In another possible implementation, the first offset may include a set of numbers. One number in the first offset indicates that the first bandwidth is offset in the frequency domain towards the direction of increasing frequency relative to the BS CBW or UE CBW, while the other number indicates that the first bandwidth is offset in the frequency domain towards the direction of decreasing frequency relative to the BS CBW or UE CBW. For example, taking the first offset as an indication of the offset of the first bandwidth from the BS CBW, if the bandwidth value of the BS CBW is 50MHz, the starting position of the BS CBW is pointA+100MHz, and the ending position of the BS CBW is pointA+150MHz, then a first offset of (-10MHz, +10MHz) indicates that the bandwidth value of the first bandwidth is 70MHz, the starting position of the first bandwidth is pointA+90MHz, and the ending position of the first bandwidth is pointA+160MHz.

[0160] Secondly, we will introduce the various possible components of the first piece of information:

[0161] In one possible implementation, the first information includes: the starting position of the first bandwidth and the bandwidth value of the first bandwidth.

[0162] In another possible implementation, the first information includes: the end position of the first bandwidth and the bandwidth value of the first bandwidth.

[0163] In another possible implementation, the first information includes a first multiple, or a second multiple, where the product of the first multiple and the UE CBW equals the bandwidth value of the first bandwidth, and the product of the second multiple and the BS CBW equals the bandwidth value of the first bandwidth. The start position, end position, and bandwidth value of the first bandwidth can be determined using the first multiple and the UE CBW. Similarly, the start position, end position, and bandwidth value of the first bandwidth can be determined using the second multiple and the BS CBW. For example, if the bandwidth value of the UE CBW is 50MHz, the start position of the UE CBW is pointA+100MHz, and the end position of the UE CBW is pointA+150MHz, then if the first multiple is 2, the bandwidth value of the first bandwidth is 100MHz, the start position of the first bandwidth is pointA+200MHz, and the end position of the first bandwidth is pointA+300MHz.

[0164] In another possible implementation, the first information includes: a first offset.

[0165] The following are several examples of first information:

[0166] In one example, the first information includes any one or more of the following: a first information element, a second information element, or a third information element, wherein the first information element indicates the subcarrier spacing SCS corresponding to the first bandwidth; the second information element indicates the offset between the starting position of the first bandwidth and the common reference point pointA, where pointA indicates the center position of subcarrier 0 of common resource block CRB 0; and the third information element indicates the bandwidth value of the first bandwidth.

[0167] For example, the first information element is "subcarrierSpacing", the second information element is "offsetToCarrier", and the third information element is "carrierBandwidth". The first information is carried in the "SCS-SpecificCarrier" information element.

[0168] When the first information is carried in a Radio Resource Control (RRC) message, such as an RRC Reconfiguration message, the RRC Reconfiguration message includes a "ServingCellConfigCommon" element, which in turn includes an "UplinkConfigCommon" element, which in turn includes a "FrequencyInfoUL" element, which in turn includes a "SCS-SpecificCarrier" element, and the "SCS-SpecificCarrier" element includes the first information.

[0169] The first information is carried in a System Information Block (SIB), such as SIB1. SIB1 includes the "ServingCellConfigCommonSIB" information element, which in turn includes "UplinkConfigCommonSIB," which in turn includes "FrequencyInfoUL-SIB," which in turn includes "SCS-SpecificCarrier," and which includes the first information.

[0170] In another example, the first information includes any one or more of the following: a second information element, a fourth information element, or a fifth information element, wherein the second information element indicates the subcarrier spacing (SCS) corresponding to the first bandwidth; the fourth information element indicates the offset between the starting position of the first bandwidth and the starting position of the BS CBW, or the fourth information element indicates the offset between the starting position of the first bandwidth and the starting position of the UE CBW; and the fifth information element is used to carry the first multiple or the second multiple.

[0171] For example, the fourth information element is the "totaloffsetToCarrier" information element, and the "totaloffsetToCarrier" information element is, for example, "INTEGER(1, ..., maxNrofPhysicalResourceBlocks)", where "maxNrofPhysicalResourceBlocks" represents the maximum number of physical resource blocks that the second communication device can allocate to the first communication device.

[0172] For example, the fifth information element is the "totalcarrierBandwidth" information element, which can be a decimal with a value greater than 1, such as "ENUMERATED{1.2, 1.4, 1.6}".

[0173] Optionally, in addition to being carried in RRC messages or SIBs, the first information can also be carried in media access control entity (MAC CE) messages or other messages. This application embodiment does not limit this.

[0174] After step S1, the second communication device may also send configuration information to the first communication device. This configuration information is used to configure scheduling resources (including frequency domain resources or other resources) for uplink transmission of the first communication device. In one example, the configuration information is used to configure scheduling resources, which include the starting position of the RBs and the number of RBs.

[0175] S3. The second communication device sends a third message to the first communication device, the third message instructing the first communication device to use the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission.

[0176] Step S3 is an optional step.

[0177] In step S3, the second communication device may also send third information to the first communication device, which is used to instruct the first communication device to use the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission.

[0178] In one possible implementation, the third information includes an indicator bit, which, when the indicator bit is "1", instructs the first communication device to use the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission.

[0179] For example, the third information is carried in an RRC message or a MAC CE message. The RRC message or MAC CE message includes an indication bit. When the indication bit is "1", the RRC message or MAC CE message carries the third information, and (through the indication bit) instructs the first communication device to use the first bandwidth as the reference bandwidth for uplink transmission. When the indication bit is "0", the RRC message or MAC CE message (through the indication bit) instructs the first communication device to use the BS CBW or UE CBW as the reference bandwidth for uplink transmission.

[0180] Optionally, in addition to being carried in RRC messages or MAC CE messages, the third information can also be carried in SIB or other messages. This application embodiment does not limit this.

[0181] Optionally, the third information can be carried in the same message as the first information; the third information and the first information can also be carried in different messages, for example, step S2 can be executed first and then step S3 can be executed, or step S3 can be executed first and then step S2 can be executed. This application embodiment does not limit this.

[0182] S4. The first communication device determines the transmission power when performing uplink transmission based on the first bandwidth.

[0183] In step S4, after the first communication device receives the first information, it determines the first bandwidth based on the first information. Then, the first communication device uses the first bandwidth as a reference bandwidth to determine the radio frequency (RF) parameters when performing uplink transmission. Finally, based on the determined RF parameters, the transmission power when performing uplink transmission is further determined.

[0184] For example, radio frequency metrics include any one or more of the following: maximum power back-off (MPR), error vector magnitude (EVM), in-band transmit (IBE), adjacent channel leakage ratio (ACLR), spectrum transmit template (SEM), or spurious emissions (SE).

[0185] In one possible implementation, the first communication device uses a first bandwidth as a reference bandwidth. Then, based on this reference bandwidth (the first bandwidth), the transmit power when the first communication device performs uplink transmission is determined.

[0186] In another possible implementation, the first communication device determines a second bandwidth based on a first bandwidth. This second bandwidth is then used as a reference bandwidth to determine the transmit power of the first communication device when performing uplink transmission. The second bandwidth satisfies the following condition: the bandwidth value of the second bandwidth is greater than the bandwidth value of the base station channel bandwidth BS CBW.

[0187] There are several possible implementations for the first and second bandwidths, which are explained below:

[0188] Method A: The first bandwidth is greater than the second bandwidth. For example, if the first bandwidth is 160MHz, its starting position is point A+100MHz, and its ending position is point A+260MHz, then the second bandwidth can be 100MHz, with its starting position at point A+100MHz and its ending position at point A+200MHz. Alternatively, the second bandwidth can be 100MHz, with its starting position at point A+160MHz and its ending position at point A+260MHz. In other words, the first communication device determines the bandwidth value, starting position, and ending position of the second bandwidth based on the first bandwidth.

[0189] Method B: The first bandwidth equals the second bandwidth. In this case, the start position of the second bandwidth can differ from the start position of the first bandwidth, and / or the end position of the second bandwidth can differ from the end position of the first bandwidth. For example, if the first bandwidth is 160MHz, its start position is point A+100MHz, and its end position is point A+260MHz, then the second bandwidth could be 160MHz, with its start position at point A+200MHz and its end position at point A+360MHz.

[0190] Method C: The first bandwidth is less than the second bandwidth. For example, if the first bandwidth is 160MHz, the starting position of the first bandwidth is point A+100MHz, and the ending position of the first bandwidth is point A+260MHz, then the second bandwidth can be 200MHz, the starting position of the second bandwidth is point A+100MHz, and the ending position of the second bandwidth is point A+300MHz.

[0191] It should be noted that after the first communication device uses the first bandwidth (or the second bandwidth) as the reference bandwidth, the transmission power determined by the first communication device when performing uplink transmission (referred to as the first transmission power) and the transmission power determined by the first communication device when performing uplink transmission based on the UE CBW or BS CBW as the reference bandwidth (referred to as the second transmission power) can remain unchanged, or the first transmission power can be greater than the second transmission power, or the first transmission power can be less than the second transmission power. This application embodiment does not impose any restrictions on this.

[0192] For example, taking the determination of the MPR by the first communication device as an example, the specific process of the first communication device determining the MPR using the first bandwidth as a reference bandwidth is described. For ease of understanding, please refer to Figure 7, which is another schematic diagram of the MPR and RB allocation position. The second communication device allocates scheduling resources for uplink transmission to the first communication device, that is, the second communication device instructs the first communication device on the frequency domain resources used for uplink transmission, which includes the RB start position and the number of RBs.

[0193] First, the relative positional relationship between the frequency domain resources configured in the second communication device and the reference bandwidth (i.e., the first bandwidth or the second bandwidth) is determined. Then, based on this relative positional relationship, the MPR (Mean Differential Ratio) is determined. For example, for PC2 CP-OFDM QPSK, if the frequency domain resource is located in the outer RB allocation region of the reference bandwidth, the MPR is less than or equal to 3 dB; if the frequency domain resource is located in the inner RB allocation region of the reference bandwidth, the MPR is less than or equal to 1.5 dB. Alternatively, ΔP can be further extended. PowerBoost The scope of application has been expanded from the original internal RB allocation area to the external RB allocation area in order to increase the transmission power (or over-transmit power).

[0194] In this embodiment, the second communication device instructs the first communication device to use a first bandwidth as a reference bandwidth, and then determines the RF parameters for uplink transmission based on the first bandwidth. Since the first bandwidth is greater than the baseband bandwidth (BS CBW), increasing the reference bandwidth from BS CBW to the first bandwidth is equivalent to relaxing the RF parameters, which helps the first communication device use higher transmit power for uplink transmission. This improves the flexibility of configuring the maximum transmit power of the first communication device. For example, please refer to Figure 4, which is a schematic diagram of MPR and RB allocation positions. In Figure 4, when the reference bandwidth of the first communication device (UE) is UE CBW, the corresponding RB allocation position is the external RB allocation area; when the reference bandwidth of the first communication device (UE) is BS CBW, the corresponding RB allocation position is the external RB allocation area; and when the reference bandwidth of the first communication device (UE) is BS RF BW, the corresponding RB allocation position is the internal RB allocation area. As shown in Figure 4, when the reference bandwidth is adjusted to the BS RF BW which is greater than the BS CBW, the RB allocation location changes to the internal RB allocation area, thereby reducing the maximum power backoff and increasing the maximum transmit power of the first communication device (UE).

[0195] The present application has been described above from a methodological perspective. Other embodiments provided by the present application will be further described below.

[0196] Please refer to Figure 8, which is a schematic diagram of an implementation of the communication device provided in this application. The communication device 800 includes a processing unit 801 and a transceiver unit 802. The communication device 800 can implement the functions of the communication devices (including a first communication device and a second communication device, etc.) in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device 800 can be a first communication device, or it can be an integrated circuit or component inside the first communication device, such as a chip. The following embodiments use the communication device 800 as an example of a first communication device for explanation.

[0197] In one example, the communication device 800 is applied to a first communication device, and the communication device 800 includes:

[0198] The transceiver unit 802 is used to receive first information sent by the second communication device. The first information indicates a first bandwidth. The first bandwidth is used as a reference bandwidth for the first communication device to perform uplink transmission. The bandwidth value of the first bandwidth is greater than the bandwidth value of the base station channel bandwidth BS CBW. The reference bandwidth is used to determine the radio frequency indicators when the first communication device performs uplink transmission. The BS CBW is the bandwidth value of a single carrier supported by the second communication device in the uplink or downlink.

[0199] The processing unit 801 is configured to determine the transmission power of the first communication device when performing uplink transmission based on the first bandwidth.

[0200] In one possible implementation, the first information includes any one or more of the following:

[0201] The starting position of the first bandwidth, the ending position of the first bandwidth, the bandwidth value of the first bandwidth, or the first offset, wherein the absolute value of the first offset and the bandwidth value of the BS CBW or the UE channel bandwidth CBW are equal to the bandwidth value of the first bandwidth, and the UE CBW is the bandwidth of a single carrier supported by the first communication device in the uplink or downlink.

[0202] In one possible implementation, the first information includes one or more of the following:

[0203] The first information cell indicates the subcarrier spacing (SCS) corresponding to the first bandwidth;

[0204] The second information cell indicates the offset between the starting position of the first bandwidth and the common reference point pointA, where pointA indicates the center position of subcarrier 0 of common resource block CRB 0;

[0205] Alternatively, a third information element, which indicates the bandwidth value of the first bandwidth.

[0206] In one possible implementation, the first information includes:

[0207] The first multiple, or the second multiple.

[0208] Wherein, the product of the first multiple and the UE CBW is equal to the bandwidth value of the first bandwidth.

[0209] The product of the second multiple and the BS CBW is equal to the bandwidth value of the first bandwidth.

[0210] In one possible implementation, the first information includes one or more of the following:

[0211] The second information element indicates the subcarrier spacing (SCS) corresponding to the first bandwidth;

[0212] The fourth information element indicates the offset between the starting position of the first bandwidth and the starting position of the BS CBW, or the fourth information element indicates the offset between the starting position of the first bandwidth and the starting position of the UE CBW.

[0213] Alternatively, a fifth cell may be used to carry either the first multiple or the second multiple.

[0214] In one possible implementation, the first offset indicates the offset of the start and / or end position of the UE CBW;

[0215] Alternatively, the first offset indicates the offset of the start and / or end position of the BS CBW.

[0216] In one possible implementation, the radio frequency indicator includes any one or more of the following:

[0217] Maximum power back-off (MPR), error vector magnitude (EVM), in-band transmit (IBE), adjacent channel leakage ratio (ACLR), spectrum transmit template (SEM), or spurious SE.

[0218] In one possible implementation, the bandwidth value of the first bandwidth is the bandwidth value of the second communication device transmitting and / or receiving one or more Radio Access Technologies (RATs) within the operating frequency band supported by the second communication device.

[0219] Alternatively, the bandwidth value of the first bandwidth is the sum of the base station channel bandwidths BS and CBW within the operating frequency band supported by the second communication device;

[0220] Alternatively, the bandwidth value of the first bandwidth is less than or equal to the bandwidth value of the base station radio frequency bandwidth BS RF BW of the second communication device.

[0221] In one possible implementation,

[0222] The transceiver unit 802 is also configured to transmit second information, the second information indicating that the first communication device supports configuring the transmit power of the first communication device based on a bandwidth value greater than the BS CBW.

[0223] In one possible implementation,

[0224] The transceiver unit 802 is also configured to receive third information, the third information instructing the first communication device to use the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission;

[0225] The processing unit 801 is further configured to determine the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission based on the third information.

[0226] In one possible implementation,

[0227] The first information is carried in any of the following messages: Radio Resource Control (RRC) message, or System Message Block (SIB).

[0228] In another example, the communication device 800 is applied to a second communication device, and the communication device 800 includes:

[0229] The transceiver unit 802 is used to send first information to the first communication device. The first information indicates a first bandwidth. The bandwidth value of the first bandwidth is greater than the bandwidth value of the base station channel bandwidth BS CBW. The first bandwidth is used as a reference bandwidth for the first communication device to perform uplink transmission. The reference bandwidth is used to determine the radio frequency indicators when the first communication device performs uplink transmission. The BS CBW is the bandwidth value of a single carrier supported by the second communication device in the uplink or downlink.

[0230] In one possible implementation, the first information includes any one or more of the following:

[0231] The starting position of the first bandwidth, the ending position of the first bandwidth, the bandwidth value of the first bandwidth, or the first offset, wherein the absolute value of the first offset and the bandwidth value of the BS CBW or the UE channel bandwidth CBW are equal to the bandwidth value of the first bandwidth, and the UE CBW is the bandwidth of a single carrier supported by the first communication device in the uplink or downlink.

[0232] In one possible implementation, the first information includes one or more of the following:

[0233] The first information cell indicates the subcarrier spacing (SCS) corresponding to the first bandwidth;

[0234] The second information cell indicates the offset between the starting position of the first bandwidth and the common reference point pointA, where pointA indicates the center position of subcarrier 0 of common resource block CRB 0;

[0235] Alternatively, a third information element, which indicates the bandwidth value of the first bandwidth.

[0236] In one possible implementation, the first information includes:

[0237] The first multiple, or the second multiple.

[0238] Wherein, the product of the first multiple and the UE CBW is equal to the bandwidth value of the first bandwidth.

[0239] The product of the second multiple and the BS CBW is equal to the bandwidth value of the first bandwidth.

[0240] In one possible implementation, the first information includes one or more of the following:

[0241] The second information element indicates the subcarrier spacing (SCS) corresponding to the first bandwidth;

[0242] The fourth information element indicates the offset between the starting position of the first bandwidth and the starting position of the BS CBW, or the fourth information element indicates the offset between the starting position of the first bandwidth and the starting position of the UE CBW.

[0243] Alternatively, a fifth cell may be used to carry either the first multiple or the second multiple.

[0244] In one possible implementation, the first offset indicates the offset of the start and / or end position of the UE CBW;

[0245] Alternatively, the first offset indicates the offset of the start and / or end position of the BS CBW.

[0246] In one possible implementation, the radio frequency indicator includes any one or more of the following:

[0247] Maximum power back-off (MPR), error vector magnitude (EVM), in-band transmit (IBE), adjacent channel leakage ratio (ACLR), spectrum transmit template (SEM), or spurious SE.

[0248] In one possible implementation, the bandwidth value of the first bandwidth is the bandwidth value of the second communication device transmitting and / or receiving one or more Radio Access Technologies (RATs) within the operating frequency band supported by the second communication device.

[0249] Alternatively, the bandwidth value of the first bandwidth is the sum of the base station channel bandwidths BS and CBW within the operating frequency band supported by the second communication device;

[0250] Alternatively, the bandwidth value of the first bandwidth is less than or equal to the bandwidth value of the base station radio frequency bandwidth BS RF BW of the second communication device.

[0251] In one possible implementation,

[0252] The transceiver unit 802 is also configured to receive second information, the second information indicating that the first communication device supports configuring the transmit power of the first communication device based on a bandwidth value greater than the BS CBW.

[0253] In one possible implementation,

[0254] The transceiver unit 802 is also configured to send third information, the third information instructing the first communication device to use the first bandwidth as the reference bandwidth for the first communication device to perform uplink transmission.

[0255] In one possible implementation, the first information is carried in any of the following messages: Radio Resource Control (RRC) message, or System Message Block (SIB).

[0256] Please refer to Figure 9, which is another schematic structural diagram of the communication device 900 provided in this application. The communication device 900 includes at least an input / output interface 902. The communication device 900 can be a chip or an integrated circuit.

[0257] Optionally, the communication device also includes logic circuitry 901.

[0258] In Figure 8, the transceiver unit 802 can be a communication interface, which can be the input / output interface 902 in Figure 9, and the input / output interface 902 can include an input interface and an output interface. Alternatively, the communication interface can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0259] The logic circuit 901 and the input / output interface 902 can also perform other steps executed by the communication device in any embodiment and achieve corresponding beneficial effects, which will not be elaborated here.

[0260] In one possible implementation, the processing unit 801 shown in FIG8 can be the logic circuit 901 in FIG9.

[0261] Optionally, the logic circuit 901 can be a processing device, the functions of which can be partially or entirely implemented in software.

[0262] Optionally, the processing apparatus may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the corresponding processing and / or steps in any of the method embodiments.

[0263] Optionally, the processing device may consist of only a processor. A memory for storing computer programs is located outside the processing device, and the processor is connected to the memory via circuitry / wires to read and execute the computer programs stored in the memory. The memory and processor may be integrated together or physically independent of each other.

[0264] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processing units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0265] Please refer to Figure 10, which shows the communication device 1000 involved in the above embodiments provided in the embodiments of this application. Specifically, the communication device 1000 can be the communication device that serves as the first communication device or the second communication device in the above embodiments.

[0266] The present invention provides a possible logical structure diagram of the communication device 1000, which may include, but is not limited to, at least one processor 1001 and a communication port 1002.

[0267] Further optionally, the device may also include at least one of a memory 1003 and a bus 1004. In the embodiments of this application, the at least one processor 1001 is used to control the operation of the communication device 1000.

[0268] Furthermore, the processor 1001 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0269] It should be noted that the communication device 1000 shown in Figure 10 can be used to implement the steps implemented by the first communication device or the second communication device in the aforementioned method embodiments, and to achieve the technical effects corresponding to the first communication device or the second communication device. The specific implementation of the communication device shown in Figure 10 can be referred to the description in the aforementioned method embodiments, and will not be repeated here.

[0270] Please refer to Figure 11, which is a schematic diagram of the structure of the communication device 1100 involved in the above embodiments provided in this application. The communication device 1100 can specifically be the communication device that serves as the first communication device or the second communication device in the above embodiments. The structure of the communication device can be referred to the structure shown in Figure 11.

[0271] The communication device 1100 includes at least one processor 1110 and at least one network interface 1140. Optionally, the communication device further includes at least one memory 1120, at least one transceiver 1130, and one or more antennas 1150. The processor 1110, memory 1120, transceiver 1130, and network interface 1140 are connected, for example, via a bus. In this embodiment, the connection may include various interfaces, transmission lines, or buses, etc., and this embodiment is not limited thereto. The antenna 1150 is connected to the transceiver 1130. The network interface 1140 is used to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 1140 may include a network interface between the communication device and a core network device, such as an S1 interface. The network interface may also include a network interface between the communication device and other communication devices (e.g., other first or second communication devices or core network devices), such as an X2 or Xn interface.

[0272] Processor 1110 is primarily used for processing communication protocols and communication data, controlling the entire communication device, executing software programs, and processing data from the software programs, for example, to support the actions described in the embodiments of the communication device. The communication device may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily used for processing communication protocols and communication data, while the CPU is primarily used for controlling the entire first or second communication device, executing software programs, and processing data from the software programs. Processor 1110 in Figure 11 may integrate the functions of a baseband processor and a CPU. Those skilled in the art will understand that the baseband processor and CPU may also be independent processors interconnected via technologies such as buses. Those skilled in the art will understand that the first or second communication device may include multiple baseband processors to adapt to different network standards, and multiple CPUs to enhance its processing capabilities. The various components of the first or second communication device may be connected via various buses. The baseband processor may also be described as a baseband processing circuit or a baseband processing chip. The CPU may also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, which is then executed by the processor to implement the baseband processing function.

[0273] The memory is primarily used to store software programs and data. The memory 1120 can exist independently or be connected to the processor 1110. Optionally, the memory 1120 can be integrated with the processor 1110, for example, integrated within a single chip. The memory 1120 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 1110. The various types of computer program code being executed can also be considered as drivers for the processor 1110.

[0274] Figure 11 shows only one memory and one processor. In the actual first or second communication device, there may be multiple processors and multiple memories. Memory can also be called storage medium or storage device, etc. Memory can be a storage element on the same chip as the processor, i.e., an on-chip storage element, or it can be a separate storage element; the embodiments of this application do not limit this.

[0275] Transceiver 1130 can be used to support the reception or transmission of radio frequency (RF) signals between a communication device and a terminal. Transceiver 1130 can be connected to antenna 1150. Transceiver 1130 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1150 can receive RF signals. The receiver Rx of transceiver 1130 is used to receive the RF signals from the antennas, convert the RF signals into digital baseband signals or digital intermediate frequency (IF) signals, and provide the digital baseband signals or IF signals to processor 1110 so that processor 1110 can perform further processing on the digital baseband signals or IF signals, such as demodulation and decoding. In addition, the transmitter Tx in transceiver 1130 is also used to receive modulated digital baseband signals or IF signals from processor 1110, convert the modulated digital baseband signals or IF signals into RF signals, and transmit the RF signals through one or more antennas 1150. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of these downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of these upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0276] The transceiver 1130 can also be called a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit that performs the receiving function can be regarded as the receiving unit, and the device in the transceiver unit that performs the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be called a receiver, input port, receiving circuit, etc., and the transmitting unit can be called a transmitter, transmitter, or transmitting circuit, etc.

[0277] It should be noted that the communication device 1100 shown in Figure 11 can specifically be used to implement the steps implemented by the first communication device or the second communication device in the aforementioned method embodiments, and to achieve the corresponding technical effects of the first communication device or the second communication device. The specific implementation methods of the communication device 1100 shown in Figure 11 can all be referred to the descriptions in the aforementioned method embodiments, and will not be repeated here. This application also provides a computer-readable storage medium storing one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method as described in the possible implementation methods of the first communication device or the second communication device in the aforementioned embodiments.

[0278] This application also provides a computer program product (or computer program) that stores one or more computers. When the computer program product is executed by the processor, the processor executes the method described above for the possible implementation of the first or second communication device.

[0279] This application also provides a chip system including at least one processor for supporting a communication device in implementing the functions involved in the possible implementations of the communication device described above. Optionally, the chip system further includes an interface circuit that provides program instructions and / or data to the at least one processor. In one possible design, the chip system may further include a memory for storing the program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices, wherein the communication device may specifically be the first communication device or the second communication device in the aforementioned method embodiments.

[0280] This application also provides a communication system, which includes the first communication device or the second communication device in any of the above embodiments.

[0281] 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, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0282] 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.

[0283] Furthermore, 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. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A communication method characterized by comprising: The method is applied to a first communication device, and the method comprises: The first communication device receives first information sent by a second communication device, the first information indicating a first bandwidth, the first bandwidth being used as a reference bandwidth for the first communication device to perform uplink transmission, a bandwidth value of the first bandwidth being greater than a bandwidth value of a base station channel bandwidth (BS CBW), the reference bandwidth being used to determine a radio frequency index when the first communication device performs uplink transmission, the BS CBW being a bandwidth value of a single carrier supported by the second communication device in uplink or downlink; According to the first bandwidth, a transmission power when the first communication device performs uplink transmission is determined.

2. The method of claim 1, wherein, The first information comprises any one or more of the following: A starting position of the first bandwidth, an ending position of the first bandwidth, a bandwidth value of the first bandwidth, or a first offset, wherein an absolute value of the first offset and a bandwidth value of the BS CBW or a user equipment channel bandwidth (UE CBW) are equal to the bandwidth value of the first bandwidth, the UE CBW being a bandwidth of a single carrier supported by the first communication device in uplink or downlink.

3. The method of claim 2, wherein, The first information comprises one or more of the following: A first information element indicating a subcarrier spacing (SCS) corresponding to the first bandwidth; A second information element indicating an offset of a starting position of the first bandwidth from a common reference point (point A), the point A indicating a center position of a subcarrier 0 of a common resource block (CRB 0); Or a third information element indicating a bandwidth value of the first bandwidth.

4. The method of claim 2, wherein, The first information comprises: A first multiple, or a second multiple, Wherein a product of the first multiple and the UE CBW is equal to the bandwidth value of the first bandwidth, A product of the second multiple and the BS CBW is equal to the bandwidth value of the first bandwidth.

5. The method of claim 4, wherein, The first information comprises one or more of the following: A second information element indicating a subcarrier spacing (SCS) corresponding to the first bandwidth; A fourth information element indicating an offset of a starting position of the first bandwidth from a starting position of the BS CBW, or a fourth information element indicating an offset of a starting position of the first bandwidth from a starting position of the UE CBW; Or a fifth information element used to carry the first multiple or the second multiple.

6. The method of claim 2, wherein, The first offset indicates an offset of a starting position and / or an ending position of the UE CBW; Or the first offset indicates an offset of a starting position and / or an ending position of the BS CBW.

7. The method according to any one of claims 1 to 6, characterized in that, The radio frequency index comprises any one or more of the following: A maximum power reduction (MPR), an error vector magnitude (EVM), an in-band emission (IBE), an adjacent channel leakage ratio (ACLR), a spectral emission mask (SEM), or a spur (SE).

8. The method of any one of claims 1-7, wherein The bandwidth value of the first bandwidth is within a working frequency band supported by the second communication device, and the second communication device transmits and / or receives a bandwidth value of a single or multiple radio access technologies (RATs); Alternatively, the bandwidth value of the first bandwidth is within a sum of base station channel bandwidths (BS CBWs) supported by the second communication device; Alternatively, the bandwidth value of the first bandwidth is less than or equal to a bandwidth value of a base station radio frequency bandwidth (BS RF BW) of the second communication device.

9. The method according to any one of claims 1-8, characterized in that, The method further comprises: sending second information indicating that the first communication device supports configuring a transmission power of the first communication device based on a bandwidth value greater than the BS CBW.

10. The method according to any one of claims 1-9, characterized in that, The method further comprises: receiving third information indicating that the first bandwidth is used as the reference bandwidth for the first communication device to perform uplink transmission; determining, according to the third information, that the first bandwidth is used as the reference bandwidth for the first communication device to perform uplink transmission.

11. The method of any of claims 1-10, wherein: the first information is carried in any of the following messages: a radio resource control (RRC) message, or a system information block (SIB).

12. A communication method characterized by comprising: The method is applied to a second communication device, and the method comprises: The second communication device sends first information to a first communication device, the first information indicating a first bandwidth, a bandwidth value of the first bandwidth being greater than a bandwidth value of a base station channel bandwidth (BS CBW), the first bandwidth being used as a reference bandwidth for the first communication device to perform uplink transmission, the reference bandwidth being used to determine a radio frequency indicator when the first communication device performs uplink transmission, and the BS CBW being a bandwidth value of a single carrier supported by the second communication device in uplink or downlink.

13. The method of claim 12, wherein, The first information includes any one or more of the following: a starting position of the first bandwidth, an ending position of the first bandwidth, a bandwidth value of the first bandwidth, or a first offset, wherein an absolute value of the first offset and a sum of bandwidth values of the BS CBW or a user equipment channel bandwidth (UE CBW) are equal to the bandwidth value of the first bandwidth, and the UE CBW being a bandwidth of a single carrier supported by the first communication device in uplink or downlink.

14. The method of claim 13, wherein, The first information includes one or more of the following: a first information element indicating a subcarrier spacing (SCS) corresponding to the first bandwidth; a second information element indicating an offset of a starting position of the first bandwidth from a common reference point (point A), the point A indicating a center position of a subcarrier 0 of a common resource block (CRB 0); or a third information element indicating a bandwidth value of the first bandwidth.

15. The method of claim 13, wherein, The first information includes: a first multiple, or a second multiple, wherein a product of the first multiple and the UE CBW is equal to the bandwidth value of the first bandwidth, a product of the second multiple and the BS CBW is equal to the bandwidth value of the first bandwidth.

16. The method of claim 15, wherein, The first information includes one or more of the following: a second information element indicating a subcarrier spacing (SCS) corresponding to the first bandwidth; a fourth information element indicating an offset of a starting position of the first bandwidth from a starting position of the BS CBW, or indicating an offset of a starting position of the first bandwidth from a starting position of the UE CBW; or a fifth information element used to carry the first multiple or the second multiple.

17. The method of claim 13, wherein, The first offset indicates an offset of a starting position and / or an ending position of the UE CBW. The first offset indicates an offset of a starting position and / or an ending position of the BS CBW.

18. The method according to any one of claims 12-17, characterized by, The radio frequency indicator includes any one or more of the following: a maximum power reduction (MPR), an error vector magnitude (EVM), an in-band emission (IBE), an adjacent channel leakage ratio (ACLR), a spectral emission mask (SEM), or a spurious emission (SE).

19. The method of any of claims 12-18, wherein: a bandwidth value of the first bandwidth is within a working frequency band supported by the second communication device, and the second communication device transmits and / or receives a bandwidth value of a single or multiple radio access technologies (RATs); or a bandwidth value of the first bandwidth is within a sum of BS CBWs supported by the second communication device; or a bandwidth value of the first bandwidth is less than or equal to a bandwidth value of a base station radio frequency bandwidth (BS RF BW) of the second communication device.

20. The method of any one of claims 12-19, wherein, The method further includes: receiving second information indicating that the first communication device supports configuring a transmission power of the first communication device based on a bandwidth value greater than the BS CBW.

21. The method of any one of claims 12-20, wherein, The method further includes: sending third information indicating that the first communication device uses the first bandwidth as the reference bandwidth for performing uplink transmission by the first communication device.

22. The method of any of claims 12-21, wherein: the first information is carried in any one of the following messages: a radio resource control (RRC) message, or a system information block (SIB).

23. A communications device, characterized by The apparatus includes a transceiver unit and a processing unit, and the communication device is configured to perform the method of any of the preceding claims 1-11 and / or any of the preceding claims 12-22.

24. A communication system, characterized by The communication system includes the first communication device and / or the second communication device. The communication system is configured to perform the method of any of the preceding claims 1-11 and / or any of the preceding claims 12-22.

25. A communications device, characterized by The communication device includes a processor and a memory, the memory is configured to store program code, and the processor is configured to invoke the program code in the memory to cause the communication device to perform the method of any of the preceding claims 1-11 and / or any of the preceding claims 12-22.

26. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a processor, perform the method of any of the preceding claims 1-11 and / or any of the preceding claims 12-22.

27. A computer program product, characterised in that, computer program, which, when run by the processor, performs the method according to any of the preceding claims 1-11, and / or claims 12-22.

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