WO2024067690A1

WO2024067690A1 - Communication method and device

Info

Publication number: WO2024067690A1
Application number: PCT/CN2023/121983
Authority: WO
Inventors: 刘云峰; 郭志恒; 宋兴华; 谢信乾
Original assignee: 华为技术有限公司
Priority date: 2022-09-30
Filing date: 2023-09-27
Publication date: 2024-04-04
Also published as: CN117812719A

Abstract

The present application relates to the technical field of communications, and provides a communication method and device. The method comprises: receiving first information from a second communication device, wherein the first information indicates a first power control parameter set, the first power control parameter set comprises a group of power control parameters corresponding to each of N frequency domain ranges, power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to a plurality of frequency domain ranges comprised in a first subband, any two of the plurality of frequency domain ranges do not overlap, the first subband is used for sending a signal, and N is an integer greater than 1; and according to the first power control parameter set, determining the power of sending the signal on the first subband. Because the second communication device indicates the power control parameters by taking each of a plurality of frequency domain ranges of a subband as a granularity and power control parameters corresponding to at least two frequency domain ranges are different, the flexibility of the power control parameters is improved.

Description

A communication method and device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed with the China Patent Office on September 30, 2022, with application number 202211213952.2 and application name “A Communication Method and Device”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of communication technology, and in particular to a communication method and device.

Background technique

In the subband full duplex (SBFD) scheme, a component carrier (CC) can be divided into multiple subbands. In the first time unit, some of the multiple subbands can be used for uplink transmission, and the other subbands can be used for downlink transmission; in the second time unit, the entire CC is used for uplink transmission, that is, all subbands are used for uplink transmission; in the third time unit, the entire CC is used for downlink transmission, that is, all subbands are used for downlink transmission. The base station can configure multiple groups of power control parameters for a component carrier for the terminal device, and then indicate a specific set of power control parameters to be used by the terminal device. The terminal device can determine the power of sending (or transmitting) uplink signals according to the set of power control parameters. However, since the base station only indicates one set of power control parameters to the terminal device on a component carrier, the terminal device can only use the same power control parameters within the CC range, which makes the power control parameters less flexible in the frequency domain.

Summary of the invention

Embodiments of the present application provide a communication method and apparatus for improving the flexibility of power control parameters.

In a first aspect, an embodiment of the present application provides a communication method, which can be executed by a first communication device, or can be executed by a chip system, and the chip system can realize the function of the first communication device, and the first communication device is, for example, a terminal device, or a device having the function of a terminal device. The method includes: receiving first information from a second communication device, the first information indicating a first power control parameter set, the first power control parameter set including a set of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two frequency domain ranges of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in the first sub-band, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges, the first sub-band is used to send a signal, and N is an integer greater than 1; according to the first power control parameter set, determining the power of sending the signal on the first sub-band.

In the embodiment of the present application, the second communication device does not configure only one set of power control parameters for one CC, but indicates to the first communication device a set of power control parameters corresponding to each of the N frequency domain ranges of a sub-band (such as the first sub-band), and the power control parameters of at least two frequency domain ranges are different, so as to improve the flexibility of the indicated power control parameters. In addition, since the first communication device receives different interferences in different frequency domain ranges when sending signals in different frequency ranges of the first sub-band, different power control parameters are configured for different frequency domain ranges in the embodiment of the present application, so that the power of the transmitted signal in different frequency domain ranges of a sub-band is different, which is conducive to reducing the interference effect on the first communication device in different frequency domain ranges, thereby improving the transmission performance of the first communication device in the first sub-band.

In one possible embodiment, the first information may include a first index corresponding to a first power control parameter set. In this case, the method further includes: receiving second information from the second communication device, the second information indicating multiple first indexes and multiple power control parameter sets, wherein a first index among the multiple first indexes corresponds to a power control parameter set in the multiple power control parameter sets, a power control parameter set in the multiple power control parameter sets includes a set of power parameters corresponding to each frequency domain range of the N frequency domain ranges, and the multiple power control parameter sets include the first power control parameter set.

In the above embodiment, the second communication device may indicate multiple possible power control parameter sets and the first indexes corresponding to the multiple possible power control parameter sets to the first communication device, and indicate the first index of a power control parameter set (such as the first power control parameter set) through the first information. On the one hand, the second communication device can flexibly select the first power control parameter set used by the first communication device from multiple possible power control parameter sets according to actual conditions, which improves the flexibility of determining the first power control parameter set; on the other hand, the second communication device can indicate the first power control parameter set through a first index, which is conducive to reducing the number of bits occupied by the first information.

In a possible implementation, the second information may also indicate information about the frequency domain range corresponding to each group of power control parameters in each of the multiple power control parameter sets, so that the first communication device can directly determine the frequency range corresponding to each group of power control parameters based on the second information.

In one possible implementation, multiple possibilities (specifically including the first, second and third) of frequency domain range information are provided. In the first, the frequency domain range information includes the second index of the frequency domain range; in the second, the frequency domain range information includes at least two of the starting frequency, length and ending frequency of the frequency domain range; in the third, the frequency domain range information includes the second index of the frequency domain range, and the frequency domain range information includes at least two of the starting frequency, length and ending frequency of the frequency domain range.

In the above implementation, three possible implementation forms of the second information indicating the information of the frequency domain range are provided, which enriches the implementation forms of the information of the frequency domain range. In the above first implementation form, the second information may include a second index of the frequency domain range, which is beneficial to saving the number of bits occupied by the second information. In the above second implementation form, the second information may include at least two of the starting frequency, length and end frequency of the frequency domain range, which is beneficial to the first communication device to intuitively and quickly determine the frequency domain range. In the above third implementation method, the second information may include a second index of the frequency domain range, and at least two of the starting frequency, length and end frequency of the frequency domain range, which is beneficial to provide the first communication device with more comprehensive information of the frequency domain range.

In a possible implementation, if the information of the frequency domain range includes a second index of the frequency domain range, the first communication device may receive third information from the second communication device, wherein the third information indicates N second indexes and the N frequency ranges, and a second index of the N second indexes corresponds to a frequency domain range of the N frequency ranges. In this way, the first communication device may determine the frequency domain range corresponding to a second index based on the third information.

In a possible implementation, the first information further includes fourth information, and the fourth information indicates that the first communication device uses different power control parameters in at least two frequency domain ranges of the first sub-band. In this way, the first communication device can determine to use different power control parameters in at least two frequency domain ranges of the first sub-band according to the first information.

In a possible implementation, the first information may be carried in the downlink control information, and the fourth information included in the first information may be specifically carried in redundant bits in the downlink control information. In this way, the number of bits of the downlink control information will not be increased.

In a possible implementation, before determining the power of sending the signal on the first sub-band according to the first power control parameter set, the method further includes: determining that N is equal to the number of multiple frequency domain ranges included in the first sub-band.

In the above-mentioned embodiment, when the first communication device determines that N is equal to the number of multiple frequency domain ranges, it is equivalent to that the first communication device can directly determine a set of power control parameters corresponding to each frequency domain range in the multiple frequency domain ranges. Therefore, the first communication device can directly determine the power of the signal sent in the first subband based on the first power control parameter set, which is conducive to simplifying the process of the first communication device determining the power of the sent signal.

In a possible implementation, the method further includes: receiving first indication information from a second communication device, the first indication information indicating information about the number of the N frequency domain ranges; and determining the N frequency domain ranges based on the information about the number of the N frequency domain ranges.

In the above embodiment, the first communication device can determine the N frequency domain ranges by itself according to the number of the N frequency domain ranges, providing a method for the first communication device to determine the N frequency domain ranges by itself. In this case, the second communication device does not need to indicate the N frequency domain ranges to the first communication device, which is beneficial to reducing the amount of data transmission between the first communication device and the second communication device.

In a possible implementation manner, the method further includes: sending capability information to the second communication device, where the capability information is used to indicate that the first communication device has the capability of using different power control parameters in at least two frequency domain ranges in a sub-band.

In the above embodiment, the first communication device can send capability information to the second communication device, so that the second communication device can clearly determine whether the first communication device has the ability to adopt different power control parameters in at least two frequency domain ranges in a sub-band, thereby avoiding the situation where the second communication device allocates a first power control parameter set to the first communication device while the first communication device is unable to use it, and is also beneficial to reduce the waste of signaling between the first communication device and the second communication device.

In a possible implementation manner, the second information further indicates at least one set of power control parameters, and each set of power control parameters in the at least one set of power control parameters is a set of power control parameters shared by the multiple frequency domain ranges.

In the above implementation, the second information may also indicate power control parameters shared by multiple frequency domain ranges to be compatible with the current configuration mechanism of power control parameters.

In a possible implementation manner, the first power control parameter set is shared by the first subband and the second subband. It can be understood that the first power control parameter set includes N groups of power control parameters, and the N groups of power control parameters correspond to the N frequency domain ranges included in the first subband and also correspond to the N frequency domain ranges included in the second subband.

In the above embodiment, the first power control parameter set can be a power control parameter set shared by multiple subbands, and the second communication device does not need to indicate the power control parameter sets corresponding to the first subband and the second subband respectively. This is conducive to reducing the signaling interaction between the first communication device and the second communication device.

In a second aspect, an embodiment of the present application provides a communication method, which can be performed by a second communication device or a chip system. The chip system can realize the function of a second communication device, and the second communication device is, for example, a terminal device, or a device having the function of a terminal device. The method includes: determining multiple frequency domain ranges of a first sub-band; sending first information to a first communication device, the first information indicating a first power control parameter set, the first power control parameter set including a set of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two frequency domain ranges of the N frequency domain ranges are different, the N frequency domain ranges belong to the multiple frequency domain ranges, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges, and N is an integer greater than 1.

In one possible embodiment, the method also includes: sending second information to the first communication device, the second information indicating multiple first indexes and multiple power control parameter sets, one first index among the multiple first indexes corresponds to one power control parameter set among the multiple power control parameter sets, and one power control parameter set among the multiple power control parameter sets includes a set of power parameters corresponding to each frequency domain range of the N frequency domain ranges; wherein the first information includes a first index corresponding to the first power control parameter set, and the multiple power control parameter sets include the first power control parameter set.

In a possible implementation manner, the second information further indicates information about a frequency domain range corresponding to each group of power control parameters in each power control parameter set among the multiple power control parameter sets.

In a possible implementation, the information of the frequency domain range includes a second index of the frequency domain range; and/or the information of the frequency domain range includes at least two of a starting frequency, a length, and an ending frequency of the frequency domain range.

In a possible implementation, when the information of the frequency domain range includes a second index of the frequency domain range, the method further includes: sending third information to the first communication device, the third information indicating N second indexes and the N frequency ranges, a second index of the N second indexes corresponding to a frequency domain range of the N frequency ranges.

In a possible implementation manner, the first information includes fourth information, where the fourth information indicates that the first communication device uses different power control parameters in at least two frequency domain ranges of the first sub-band.

In a possible implementation manner, the first information is carried in downlink control information, and the fourth information is carried in redundant bits of the downlink control information.

In a possible implementation manner, the method further includes: receiving capability information from the first communication device, where the capability information is used to indicate that the first communication device has the capability of using different power control parameters in at least two frequency domain ranges in a sub-band.

In a possible implementation manner, determining the multiple frequency domain ranges of the first sub-band includes: determining the multiple frequency domain ranges according to a length of the first sub-band and the number of the multiple frequency domain ranges included in the first sub-band.

In the above implementation, a method for a second communication device to determine multiple frequency domain ranges is provided.

In a possible implementation manner, the method further includes: sending first indication information to the first communication device, where the first indication information indicates information about the number of the N frequency domain ranges.

In a third aspect, an embodiment of the present application provides a communication method, which can be executed by a first communication device, or can be executed by a chip system, and the chip system can realize the function of the first communication device, and the first communication device is, for example, a terminal device, or a device having the function of a terminal device. The method includes: receiving first information from a second communication device, the first information indicating a first power control parameter set, the first power control parameter set including a set of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two frequency domain ranges of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in the first sub-band, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges, the first sub-band is used to send signals, and N is an integer greater than 1; according to a set of power control parameters in the first power control parameter set, determine the power of sending signals on the first sub-band.

In the embodiment of the present application, the second communication device may indicate the power control parameters (equivalent to N groups of power control parameters) corresponding to N frequency domain ranges to the first communication device, and the first communication device may select a group of power control parameters from the N groups of power control parameters to determine the power of the transmitted signal, which is conducive to improving the flexibility of determining the power control parameters. In addition, the group of power control parameters selected by the first communication device each time may be different, thereby increasing the randomness of the power of the determined transmitted signal, which is also conducive to improving the anti-interference ability of the first communication device to a certain extent, so as to improve the transmission performance of the first communication device.

In a possible implementation manner, the method further includes: determining that N is smaller than the number of multiple frequency domain ranges included in the first sub-band.

In a fourth aspect, an embodiment of the present application provides a communication method, which can be executed by a first communication device, or can be executed by a chip system, and the chip system can implement the functions of the first communication device, and the first communication device is, for example, a terminal device, or a device having the functions of a terminal device. The method includes: receiving first information from a second communication device, the first information indicating a first power control parameter The first power control parameter set includes a set of power control parameters corresponding to each of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in the first sub-band, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges. The first sub-band is used to send signals, and N is an integer greater than 1. The first power control parameter set is used to determine the power of sending the signal on the first sub-band.

In a possible implementation, the method further includes: determining the power of sending a signal on the first subband according to a set of power control parameters in the first power control parameter set; or determining the power of sending a signal on the first subband according to the first power control parameter set.

In a fifth aspect, an embodiment of the present application provides a communication device, which may be the first communication device in the first aspect above, or an electronic device (e.g., a chip system) configured in the first communication device, or a larger device including the first communication device. The communication device includes corresponding means or modules for executing the first aspect or any possible implementation method above. For example, the communication device includes a processing module (sometimes also referred to as a processing unit), and a transceiver module (sometimes also referred to as a transceiver unit).

For example, the transceiver module is used to receive first information from a second communication device, the first information indicates a first power control parameter set, the first power control parameter set includes a set of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in a first sub-band, there is no overlap between any two frequency domain ranges of the multiple frequency domain ranges, the first sub-band is used to send signals, and N is an integer greater than 1; the processing module is used to determine the power of sending the signal on the first sub-band according to the first power control parameter set.

In an optional implementation, the communication device includes a storage unit, and the processing unit can be coupled to the storage unit and execute a program or instruction in the storage unit to enable the communication device to perform the function of the above-mentioned first communication device.

In a sixth aspect, an embodiment of the present application provides a communication device, which may be the second communication device in the second aspect above, or an electronic device (e.g., a chip system) configured in the second communication device, or a larger device including the second communication device. The communication device includes corresponding means (means) or modules for executing the second aspect above or any possible implementation. For example, the communication device includes a processing module (sometimes also referred to as a processing unit), and a transceiver module (sometimes also referred to as a transceiver unit).

For example, the processing module is used to determine multiple frequency domain ranges of the first subband; the transceiver module is used to send first information to the first communication device, the first information indicates a first power control parameter set, the first power control parameter set includes a set of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to the multiple frequency domain ranges, there is no overlap between any two frequency domain ranges among the multiple frequency domain ranges, and N is an integer greater than 1.

In an optional implementation, the communication device includes a storage unit, and the processing unit can be coupled to the storage unit and execute a program or instruction in the storage unit to enable the communication device to perform the function of the second communication device.

In a seventh aspect, an embodiment of the present application provides a communication device, which may be the first communication device in the third aspect above, or an electronic device (e.g., a chip system) configured in the first communication device, or a larger device including the first communication device. The communication device includes corresponding means or modules for executing the third aspect or any possible implementation method. For example, the communication device includes a processing module (sometimes also referred to as a processing unit), and a transceiver module (sometimes also referred to as a transceiver unit).

For example, the transceiver module is used to receive first information from a second communication device, the first information indicates a first power control parameter set, the first power control parameter set includes a set of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in a first sub-band, there is no overlap between any two frequency domain ranges of the multiple frequency domain ranges, the first sub-band is used to send signals, and N is an integer greater than 1; the processing module is used to determine the power of sending the signal on the first sub-band according to a set of power control parameter sets in the first power control parameter set.

In an eighth aspect, an embodiment of the present application provides a communication device, which may be the first communication device in the fourth aspect above, or an electronic device (e.g., a chip system) configured in the first communication device, or a larger device including the first communication device. The communication device includes corresponding means or modules for executing the fourth aspect or any possible implementation method. For example, the communication device includes a processing module (sometimes also referred to as a processing unit), and a transceiver module (sometimes also referred to as a transceiver unit).

For example, the transceiver module is used to receive first information from the second communication device under the control of the processing module, the first information indicates a first power control parameter set, and the first power control parameter set includes a set of parameters corresponding to each frequency domain range of N frequency domain ranges. power control parameters, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in the first sub-band, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges, the first sub-band is used to send signals, N is an integer greater than 1, and the first power control parameter set is used to determine the power of sending the signal on the first sub-band.

In a ninth aspect, an embodiment of the present application provides a chip system, the chip system comprising: a processor and a communication interface. The processor is used to call and run instructions from the communication interface, and when the processor executes the instructions, the communication method described in any one of the first to fourth aspects is implemented.

In the tenth aspect, an embodiment of the present application provides a communication system, which includes any communication device in the seventh aspect and any communication device in the eighth aspect.

In the eleventh aspect, an embodiment of the present application provides a communication device, comprising: a processor and a memory; the memory is used to store one or more computer programs, and the one or more computer programs include computer execution instructions. When the communication device is running, the processor executes the one or more computer programs stored in the memory, so that the communication device performs the communication method as described in any one of the first aspect to the fourth aspect.

Optionally, the communication device further includes other components, such as an antenna, an input/output module, an interface, etc. These components may be hardware, software, or a combination of software and hardware.

In the twelfth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store computer programs or instructions. When the computer-readable storage medium is executed, it implements the communication method described in any one of the first to fourth aspects above.

In a thirteenth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer, implements the communication method described in any one of the first to fourth aspects above.

Regarding the beneficial effects of the second to thirteenth aspects, reference may be made to the beneficial effects discussed in the first or third aspect and will not be listed here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a resource structure occupied by a downlink and an uplink under a time division duplex technology;

FIG2 is a schematic diagram of a resource structure occupied by a downlink and an uplink under the SBFD technology;

FIG3 is a schematic diagram of a scenario applicable to an embodiment of the present application;

FIG4 is a schematic diagram of a scenario provided in an embodiment of the present application;

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

FIG6 is a schematic diagram of power component distribution in multiple frequency domain ranges of a first sub-band provided by an embodiment of the present application;

FIG7 is a schematic diagram of a flow chart of another communication method provided in an embodiment of the present application;

FIG8 is a schematic diagram of a DCI indicating multiple resource block groups for this uplink transmission;

FIG9 is a schematic diagram of a DCI indicating multiple resource block groups for uplink transmission provided in an embodiment of the present application;

FIG10 is a schematic diagram of a flow chart of another communication method provided in an embodiment of the present application;

11 to 16 are schematic diagrams of the structures of several communication devices provided in embodiments of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

Below, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1. A terminal device is a device with wireless transceiver functions, which can be a fixed device, a mobile device, a handheld device, a wearable device, a vehicle-mounted device, or a wireless device built into the above device (for example, a communication module or a chip system, etc.). The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, device-to-device communication (D2D), vehicle to everything (V2X), machine-to-machine/machine-type communications (M2M/MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart The terminal device can be used in scenarios such as wearables, smart transportation, smart cities, drones, robots, etc. The terminal device may sometimes be referred to as user equipment (UE), terminal, access station, UE station, remote station, wireless communication device, or user device, etc. For the convenience of description, the terminal device is UE as an example in the embodiments of the present application.

2. Network equipment, such as access network (AN) equipment (also known as access network elements), and/or core network equipment (also known as core network elements).

Among them, the access network device is a device with wireless transceiver function, which is used to communicate with the UE. The access network network elements include but are not limited to base stations (BTS, Node B, eNodeB/eNB, or gNodeB/gNB) in the above-mentioned communication system, transceiver points (t(R)ANsmission reception point, TRP), base stations of subsequent evolution of 3GPP, access nodes in wireless fidelity (wireless fidelity, WiFi) systems, wireless relay nodes, wireless backhaul nodes, etc. The base station can be: a macro base station, a micro base station, a micro-micro base station, a small station, a relay station, etc. Multiple base stations can support the networks of the same access technology mentioned above, or they can support the networks of different access technologies mentioned above. The base station can include one or more co-sited or non-co-sited transmission and receiving points. The network device can also be a wireless controller, a centralized unit (centralized unit, CU), which can also be called a convergence unit, and/or a distributed unit (distributed unit, DU) in the cloud radio access network (cloud radio access network, C(R)AN) scenario. The network device may also be a drone, satellite, terminal, server, wearable device, or vehicle-mounted device that performs the function of a network device in D2D communication and M2M communication. For example, the network device in vehicle to everything (V2X) technology may be a road side unit (RSU). The following describes the access network device by taking a base station as an example. The multiple network devices in the communication system may be base stations of the same type or different types. The base station may communicate with the UE or communicate with the UE through a relay station. The UE may communicate with multiple base stations in different access technologies.

The core network element is used to implement at least one of the functions of mobility management, data processing, session management, policy and billing. The names of the devices that implement the core network functions in systems with different access technologies may be different, and the embodiments of the present application do not limit this. Taking the fifth generation ( ^5th generation, 5G) communication system as an example, the core network element includes: access and mobility management function (AMF), session management function (SMF) or user plane function (UPF), etc.

3. Time unit, used to indicate time domain resources, such as time slot, mini-slot (or mini-slot) or symbol, etc. If the time unit is a time slot, then one time unit may include one or more time slots; if the time unit is a mini-slot, then one time unit may include one or more mini-slots; if the time unit is a symbol, then one time unit may include one or more symbols.

In the embodiments of the present application, the number of nouns, unless otherwise specified, means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "plural" means two or more. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character "/" generally indicates that the previous and next associated objects are in an "or" relationship. For example, A/B means: A or B. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

Unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, the "first information" and "second information" in the embodiments of the present application are not used to limit the differences in the transmission order, priority or importance of the two information.

Please refer to Figure 1, which is a schematic diagram of the resource structure occupied by the downlink (DL) and uplink (UL) under a time division duplexing (TDD) technology. UL is used to implement uplink transmission, and DL is used to implement downlink transmission. Figure 1 takes the frequency domain resource as a component carrier (CC) as an example, and a CC is, for example, a continuous frequency domain resource.

As shown in Figure 1, the time domain resources corresponding to a CC occupied by DL are more than the time domain resources corresponding to a CC occupied by UL. In other words, downlink transmission occupies more time domain resources in a CC than uplink transmission in a CC. The horizontal axis t in Figure 1 represents the time domain resources, and the vertical axis F represents the frequency domain resources. As shown in Figure 1, compared with DL, UL has fewer available time domain resources, poorer coverage, and longer delay.

Among them, UL and DL are relative. For example, the communication link from the network device to the terminal device is considered DL, and the communication link from the terminal device to the network device can be considered UL. Correspondingly, uplink transmission and downlink transmission are also relative. For example, the transmission from the network device to the terminal device can be considered downlink transmission, and the transmission from the terminal device to the network device can be considered uplink transmission.

In order to reduce the UL delay in the TDD system, SBFD is proposed. In SBFD technology, the frequency domain resources of a CC can be divided into For example, in the first time unit, a part of the subbands in the multiple subbands can be used for uplink transmission, and another part of the subbands can be used for downlink transmission. The first time unit can be called an SBFD time unit; in the second time unit, the entire CC is used for uplink transmission, that is, all subbands are used for uplink transmission. In this case, the second time unit can be called an UL time unit or an uplink time unit. It can be understood that in the DL time unit, all subbands are used for downlink transmission; in the third time unit, the entire CC is used for downlink transmission, that is, all subbands are used for downlink transmission. In this case, the third time unit can be called a DL time unit or a downlink time unit. It can be understood that in the UL time unit, all subbands are used for uplink transmission. In the SBFD time unit, a part of the subbands in the multiple subbands can be used for uplink transmission, and another part of the subbands can be used for downlink transmission, so that uplink transmission and downlink transmission can be completed on the same time domain resources. Since the time domain resources occupied by UL are increased in the SBFD system, the delay of UL can be reduced and the coverage of UL can be enhanced.

Please refer to Figure 2, which is a schematic diagram of the resource structure occupied by DL and UL under the SBFD technology. Figure 2 takes the frequency domain resource as one CC as an example.

A CC can be divided into multiple subbands. In FIG2, a CC including three subbands, namely, subband 0, subband 1 and subband 2, is taken as an example. Among them, there is no overlap in the frequency domain of subband 0, subband 1 and subband 2. In the SBFD time unit, UL occupies subband 1. In other words, subband 1 is used for uplink transmission. The subband used for uplink transmission can also be called uplink subband or UL subband. In the SBFD time unit, DL occupies subband 0 and subband 2. In other words, subband 0 and subband 2 are used for downlink transmission. The subband used for downlink transmission can also be called downlink subband or DL subband. Compared with FIG1, the UL in FIG2 occupies more time domain resources, due to the reduction of the delay of uplink transmission. Among them, the horizontal axis t in FIG2 represents the time domain resources, and the vertical axis F represents the frequency domain resources. In addition, FIG2 also illustrates the UL time unit, and the CCs corresponding to the UL time unit can all be used for uplink transmission.

In the following SBFD technology, since different subbands in a CC may be used for uplink transmission and downlink transmission at the same time, that is, uplink transmission and downlink transmission may exist simultaneously on the same time domain resources, there will be cross-link interference (CLI) under the SBFD technology. The CLI includes CLI between terminal devices (such as between UEs (UE-UE)) and CLI between cells (cell-cell). The CLI between UEs includes the interference caused by the uplink transmission of a UE (such as UE0) in the same network device/cell to the downlink transmission of another UE (such as UE1), and the interference caused by the uplink transmission corresponding to a UE (such as UE0) of a network device (such as network device 0) or a cell (such as cell 0) to the downlink transmission corresponding to another network device (such as network device 1) or a UE (such as UE2) in a cell (such as cell 1). The CLI between cells includes the interference caused by the downlink transmission corresponding to a network device to the uplink transmission corresponding to another network device. It can be understood that a network device serves users in a cell. Among them, a network device may include one or more cells, or a network device may be replaced by a cell.

The CLI is introduced below in conjunction with the scenario diagram shown in Figure 3. In Figure 3, the terminal device is taken as a UE for example.

As shown in FIG3 , the scenario includes network device 0, network device 1, UE0, UE1, UE2 and UE3. Among them, network device 0 serves UE0 and UE1, and network device 1 serves UE2 and UE3. Uplink transmission (indicated by the arrowed line toward network device 0 in FIG3 ) and downlink transmission (indicated by the arrowed line toward UE0 in FIG3 ) can be performed between network device 0 and UE0, and uplink transmission (indicated by the arrowed line toward network device 0 in FIG3 ) and downlink transmission (indicated by the arrowed line toward UE1 in FIG3 ) can be performed between network device 0 and UE1. Uplink transmission (indicated by the arrowed line toward network device 1 in FIG3 ) and downlink transmission (indicated by the arrowed line toward UE2 in FIG3 ) can be performed between network device 1 and UE2. Uplink transmission (illustrated by a line with an arrow pointing toward the network device 1 in FIG. 3 ) and downlink transmission (illustrated by a line with an arrow pointing toward the UE 3 in FIG. 3 ) can be performed between the network device 1 and the UE 3 .

For example, the interference of UE1's uplink transmission on UE0's downlink transmission belongs to the UE-UE CLI within the cell. For another example, the interference of UE2's uplink transmission on UE1's downlink transmission belongs to the UE-UE CLI between cells. For example, the interference of network device 0's downlink transmission on network device 1's uplink transmission belongs to cell-cell CLI.

In order to reduce the impact of cell-cell CLI on the uplink transmission of terminal devices, the network device can configure multiple groups of power control parameters for the terminal device on a CC, and then indicate a specific group of power control parameters to be used by the terminal device, namely, the CC-level power control parameters. The terminal device determines the power of the signal sent by the terminal device on the subband on the CC according to the group of power control parameters. For the convenience of description, the power of the signal sent can be called the transmission (or transmit) power. In this way, increasing the transmission power of the terminal device at the CC level can reduce the impact of cell-cell CLI on the uplink transmission of the terminal device to a certain extent. However, since the power control parameters at the CC level are indicated, the flexibility of the power control parameters is poor. In addition, in the SBFD time unit, there are also large differences in the cell-cell CLI in different frequency domain ranges of the UL subband. Therefore, the terminal device determines the transmission power according to the CC-level power control parameters, which may still not meet the needs of uplink transmission.

In view of this, an embodiment of the present application provides a communication method, in which a second communication device can indicate to a first communication device The first power control parameter set includes N groups of power control parameters, one group of power control parameters in the N groups of power control parameters corresponds to one frequency domain range in the N frequency domain ranges included in a subband (such as the first subband), which is equivalent to allocating the power control parameter set with the frequency domain range of a subband as the granularity, so it is conducive to improving the flexibility of indicating the power control parameters, and at least two groups of power control parameters in the first power control parameter set are different, so the flexibility of indicating the power control parameters can also be improved. Since the interference (such as including cell-cell CLI) received in different frequency domain ranges of the first subband is different, in the embodiment of the present application, the second communication device indicates the power control parameters corresponding to different frequency domain ranges to the first communication device, so that the first communication device determines the transmission power in different frequency domain ranges according to the power control parameters corresponding to different frequency domain ranges. It may also be different, and the transmission power of the first communication device in different frequency domain ranges is different, which is conducive to reducing the influence of interference (such as including cell-cell CLI) on the transmission of the first communication device in the frequency domain range, and is also conducive to improving the transmission performance.

The communication method in the embodiments of the present application may be applicable to a fifth generation communication system, a beyond fifth generation (beyond ^5th generation, beyond 5G) communication system, a sixth generation ( ^6th generation, 6G) communication system or other future evolved communication systems, or other various wireless communication systems, etc., and the embodiments of the present application do not make specific limitations on this.

Please refer to Figure 4, which is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. Alternatively, Figure 4 can also be understood as a scenario schematic diagram. As shown in Figure 4, the communication system includes a first communication device and a second communication device. In Figure 4, the number of first communication devices is 2 and the number of second communication devices is 1 for example, and the number of first communication devices and second communication devices is not actually limited.

Any first communication device and the second communication device can communicate with each other. Transmission from any first communication device to the second communication device can be regarded as uplink transmission, and transmission from the second communication device to any first communication device can be regarded as downlink transmission.

Wherein, any first communication device is, for example, a terminal device, and the implementation of the terminal device can refer to the above text. The second communication device is, for example, a network device, and the implementation of the network device can refer to the above text.

In a possible implementation, any first communication device may be, for example, UE0 or UE1 in Figure 3, and the second communication device may be network device 0 in Figure 3; or, any first communication device may be, for example, UE2 or UE3 in Figure 3, and the second communication device may be network device 1 in Figure 3.

In a possible implementation, the second communication device may support SBFD technology. For example, the second communication device may perform uplink transmission on a part of the multiple subbands corresponding to the first time unit (also referred to as the SBFD time unit), and perform downlink transmission on another part of the subbands. The second communication device may perform uplink transmission on the entire CC corresponding to the second time unit (also referred to as the UL time unit), that is, all subbands corresponding to the second time unit are used for uplink transmission, and the second communication device may perform downlink transmission on the entire CC corresponding to the third time unit, that is, all subbands corresponding to the third time unit are used for downlink transmission. For the relevant content of the SBFD technology, please refer to the previous content. In this implementation, the second communication device can also be regarded as a SBFD device.

Optionally, the first communication device may support SBFD technology, and the meaning of supporting SBFD technology can refer to the content in the previous text. Among them, the relevant content of SBFD technology can refer to the content in the previous text. In this embodiment, the first communication device can also be regarded as a SBFD device.

The method provided by the embodiment of the present application is described below in conjunction with the accompanying drawings. In the accompanying drawings corresponding to the various embodiments of the present application, all steps represented by dotted lines are optional steps. Also, the first communication device described in the various embodiments of the present application is, for example, any first communication device in FIG. 4, and the second communication device is, for example, the second communication device in FIG. 4.

Please refer to Figure 5, which is a flow chart of a communication method provided in an embodiment of the present application. The flow chart includes the following steps.

S501. A second communication device determines multiple frequency domain ranges of a first sub-band.

The first subband may be a subband in a CC (such as the first CC), and the first subband may be, for example, a subband under the SBFD technology. For example, the first subband may be used for uplink transmission, in other words, the first subband may be used to send an uplink signal. The uplink signal may be carried on, for example, a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) of the uplink signal.

The first subband may include multiple frequency ranges (frequency range, or frequency area), which may also be referred to as frequency ranges. One of the multiple frequency ranges may be a continuous frequency, for example, a frequency range is [4.8 GHz (gigahertz), 4.9 GHz], or may be expressed as 4.8 GHz-4.9 GHz. Optionally, the first subband includes multiple physical resource blocks (physical resource block groups, PRBs), in which case each of the multiple frequency ranges may include at least one PRB. Among them, PRBs may also be referred to as RBs.

There is no overlap between any two frequency domain ranges among the multiple frequency domain ranges included in the first subband. The fact that there is no overlap between any two frequency domain ranges can be understood as the frequency domain range where any two frequency domain ranges overlap is 0. Alternatively, any two frequency domain ranges do not include the same PRB.

Optionally, there are at least two continuous frequency domain ranges among the multiple frequency domain ranges. The two continuous frequency domain ranges can be understood as the end frequency of one frequency domain range being the start (start) frequency of another frequency domain range. The start frequency of the frequency domain range can also be the start frequency of the one frequency domain range. The minimum frequency in the frequency domain range, and the end frequency of the frequency domain range can be the maximum frequency in the frequency domain range.

Alternatively, any two frequency domain ranges of the multiple frequency domain ranges are discontinuous. The two frequency domain ranges being discontinuous can be understood as the end frequency of one frequency domain range is not the start frequency of another frequency domain range.

For example, the first sub-band is specifically [4.84 GHz, 4.86 GHz], and the multiple frequency domain ranges included in the first sub-band may be frequency domain range 1 and frequency domain range 2. If frequency domain range 1 is [4.84 GHz, 4.85 GHz], and frequency domain range 2 is [4.85 GHz, 4.86 GHz], then frequency range 1 and frequency range 2 may be considered continuous. If frequency domain range 1 is [4.84 GHz, 4.849 GHz], and frequency domain range 2 is [4.85 GHz, 4.86 GHz], then frequency range 1 and frequency range 2 may be considered discontinuous.

For example, the index of the PRB included in the first subband is specifically from 11 to 30, and the frequency domain range contained in the first subband can be specifically continuous, that is, the frequency domain range of the PRB corresponding to the adjacent PRB index is continuous. The multiple frequency domain ranges included in the first subband may be frequency domain range 1 and frequency domain range 2. If frequency domain range 1 includes PRB#11-PRB#20, where PRB#x can be understood as the index of the PRB is x, and frequency domain range 2 includes PRB#21-PRB#30, then frequency range 1 and frequency range 2 can be regarded as continuous. If frequency domain range 1 includes PRB#11-PRB#20, and frequency domain range 2 includes PRB#23-PRB#30, then frequency range 1 and frequency range 2 can be regarded as discontinuous.

The multiple frequency domain ranges are all multiple frequency domain ranges with the same length, or there are at least two frequency domain ranges with different lengths in the multiple frequency domain ranges. The length of the frequency domain range can also be called the bandwidth of the frequency domain range. The length of the frequency domain range can be the difference between the starting frequency and the ending frequency of the frequency domain range. For example, if one of the multiple frequency domain ranges is [4.84GHz, 4.85GHz], then the length of the frequency domain range is 0.01GHz.

The second communication device may determine multiple frequency domain ranges included in the first sub-band. Determining multiple frequency domain ranges may be understood as the second communication device determining at least two of the starting frequency, length, and end frequency of each frequency domain range in the multiple frequency domain ranges. The following describes the manner in which the second communication device determines multiple frequency domain ranges.

Method 1: The second communication device determines multiple frequency domain ranges of the first sub-band through a protocol.

Exemplarily, by default, the lengths of different frequency domain ranges are the same, and the protocol may be configured with the number of the multiple frequency domain ranges included in the first sub-band. In this case, the second communication device determines the multiple frequency domain ranges of the first sub-band based on the number of frequency domain ranges and the frequency domain range of the first sub-band.

Mode 2: The second communication device may determine a plurality of frequency domain ranges of the first sub-band according to the bandwidth (or length) of the first sub-band and the number of frequency domain ranges included in the first sub-band.

A first sub-method under the second method: the number of frequency domain ranges included in the first sub-band can be determined by the second communication device from the first corresponding relationship according to the bandwidth of the first sub-band.

The first correspondence relationship includes a correspondence relationship between different bandwidth intervals of the subband and different numbers of multiple frequency domain ranges included in the subband. The first correspondence relationship may be a protocol configuration in the second communication device. The specific form of the first correspondence relationship may be a table. When the first correspondence relationship is represented by a table, the first correspondence relationship may also be called a frequency domain range configuration table.

If a bandwidth interval of a sub-band in the first correspondence relationship corresponds to a value of the number of multiple frequency domain ranges included in the sub-band, the second communication device can determine the bandwidth interval to which the first sub-band belongs in the first correspondence relationship based on the bandwidth of the first sub-band, and determine the number of multiple frequency domain ranges corresponding to the first sub-band from the first correspondence relationship, and determine the multiple frequency domain ranges included in the first sub-band based on the number of multiple frequency domain ranges corresponding to the first sub-band and the bandwidth of the first sub-band.

Please refer to Table 1 below, which is an example of the first corresponding relationship.

Table 1

It can be seen from Table 1 above that when the bandwidth of a sub-band is less than or equal to 20 MHz, the number of multiple frequency domain ranges of the sub-band is 2; when the bandwidth of a sub-band is greater than 20 MHz and less than or equal to 40 MHz, the number of multiple frequency domain ranges of the sub-band is 4; when the bandwidth of a sub-band is greater than 40 MHz and less than or equal to 80 MHz, the number of multiple frequency domain ranges of the sub-band is 8; when the bandwidth of a sub-band is greater than 80 MHz, the number of multiple frequency domain ranges of the sub-band is 16.

For example, if the first sub-band is specifically [4.8 GHz, 4.82 GHz], then the second communication device can determine that the bandwidth of the first sub-band is 20 MHz, so the second communication device can determine that the number of multiple frequency domain ranges corresponding to the first sub-band is 2. Accordingly, the second communication device can determine The multiple frequency domain ranges included in the first sub-band are specifically: two frequency domain ranges: [4.8 GHz, 4.81 GHz] and [4.81 GHz, 4.82 GHz].

The above is an example of a value of the number of multiple frequency domain ranges included in a subband corresponding to a bandwidth interval of the subband in the first corresponding relationship. It is possible that a bandwidth interval of the subband in the first corresponding relationship corresponds to multiple values of the number of multiple frequency domain ranges included in the subband. In this case, the second communication device can determine a number from multiple numbers of multiple frequency domain ranges corresponding to the first subband as the number of multiple frequency domain ranges included in the first subband. For example, the second communication device can determine a number from multiple numbers.

Please refer to Table 2, which is another example of a first corresponding relationship provided in an embodiment of the present application.

Table 2

It can be seen from Table 2 that when the bandwidth of a sub-band is less than or equal to 20MHz, the number of multiple frequency domain ranges included in the sub-band may be 2 or 4; when the bandwidth of a sub-band is greater than 20MHz and less than or equal to 40MHz, the number of multiple frequency domain ranges included in the sub-band may be 4 or 8; when the bandwidth of a sub-band is greater than 40MHz and less than or equal to 80MHz, the number of multiple frequency domain ranges included in the sub-band may be 8 or 16; when the bandwidth of a sub-band is greater than 80MHz, the number of multiple frequency domain ranges included in the sub-band may be 16 or 32.

The second sub-mode under mode 2: The number of frequency domain ranges included in the first sub-band can be determined by the second communication device from a second corresponding relationship according to the bandwidth of the first sub-band. The second corresponding relationship includes a correspondence between the number intervals of different PRBs of the sub-band and the different numbers of multiple frequency domain ranges included in the sub-band.

The second corresponding relationship may be a protocol configuration in the second communication device. The specific form of the second corresponding relationship may be a table.

If a number interval of PRBs of a subband in the second correspondence corresponds to a value of the number of multiple frequency domain ranges included in the subband, the second communication device can determine the number interval of PRBs to which the first subband belongs in the second correspondence based on the number of PRBs included in the first subband, and determine the number of multiple frequency domain ranges corresponding to the first subband from the second correspondence, and determine the multiple frequency domain ranges included in the first subband based on the number of multiple frequency domain ranges corresponding to the first subband and the bandwidth of the first subband.

Please refer to Table 3, which is an example of a second corresponding relationship provided in an embodiment of the present application.

table 3

It can be seen from Table 3 that when the number of PRBs included in a certain subband is between 2-23, the number of multiple frequency domain ranges included in the subband is 2; when the number of PRBs included in a certain subband is between 24-72, the number of multiple frequency domain ranges included in the subband is 4; when the number of PRBs included in the first subband is between 73-144, the number of multiple frequency domain ranges included in the subband is 8; when the number of PRBs included in the first subband is between 145-275, the number of multiple frequency domain ranges included in the subband is 16.

For example, the first sub-band includes 100 PRBs, and the second communication device may determine that the number of multiple frequency domain ranges corresponding to the first sub-band is 8. Accordingly, the second communication device may determine the multiple frequency domain ranges included in the first sub-band.

The above is an example of a value of the number of multiple frequency domain ranges included in a number interval of PRBs of a sub-band in the second corresponding relationship. It is possible that a number interval of PRBs of a sub-band in the second corresponding relationship corresponds to multiple values of the number of multiple frequency domain ranges included in the sub-band. In this case, the second communication device can determine a number from multiple numbers corresponding to a number interval of PRBs of the first sub-band as the number of multiple frequency domain ranges included in the first sub-band.

For example, the manner in which the second communication device can determine a quantity from multiple quantities can refer to the content discussed above.

Please refer to Table 4, which is another example of a second corresponding relationship provided in an embodiment of the present application.

Table 4

It can be seen from Table 4 that when the number of PRBs of a subband is between 2-23, the number of multiple frequency domain ranges included in the subband can be 2 or 4; when the number of PRBs of a subband is between 24-72, the number of multiple frequency domain ranges included in the subband can be 4 or 8; when the number of PRBs of the first subband is between 73-144, the number of multiple frequency domain ranges included in the subband can be 8 or 16; when the number of PRBs of the first subband is between 145-275, the number of multiple frequency domain ranges included in the subband can be 16 or 32.

For example, if the first sub-band includes 100 PRBs, the second communication device may determine that the number of the multiple frequency domain ranges corresponding to the first sub-band is 8 or 16, and the second communication device may determine the number of the multiple frequency domain ranges included in the first sub-band from 8 or 16. For example, if the second communication device determines that the number of the multiple frequency domain ranges included in the first sub-band is 8, correspondingly, the second communication device may determine the multiple frequency domain ranges included in the first sub-band.

In the second sub-method of the above-mentioned method 2, when the number of PRBs included in the first sub-band is M, and the number of multiple frequency domain ranges included in the first sub-band is Q, if the second communication device determines that M cannot divide Q, it can be expressed as M0=M mod Q, M0 is not 0, and M modQ represents the remainder. As an embodiment, the second communication device can determine that the number of PRBs included in the first Q-1 frequency domain ranges of the multiple (that is, Q) frequency domain ranges is The number of PRBs included in the Qth frequency domain range is in Indicates rounding down.

In the first and second methods, the protocol can indirectly configure multiple frequency domain ranges, so that the second communication device determines the multiple frequency domain ranges in a relatively direct manner with a certain degree of flexibility.

Method 3: The second communication device may determine multiple frequency domain ranges of the first sub-band by itself.

Exemplarily, the second communication device may determine multiple frequency domain ranges of the first sub-band according to a communication scenario.

For example, if the second communication device determines that the communication scenario between the second communication device and the first communication device is a first type of communication scenario, the number of frequency domain ranges included in the first sub-band is determined to be a first number. The second communication device divides the first sub-band according to the first number to obtain multiple frequency domain ranges that meet the first number. The first number is an integer greater than 1.

Alternatively, the second communication device determines that the communication scenario between the second communication device and the first communication device belongs to the second type of communication scenario, and then determines that the number of frequency domain ranges included in the first sub-band is the second number. The second communication device divides the first sub-band according to the second number, thereby obtaining a plurality of frequency domain ranges that meet the second number. The second number is an integer greater than 1. Optionally, the second number may be less than the first number.

The first type of communication scenario is, for example, a communication scenario requiring a transmission performance greater than a first threshold, such as enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC) or enhanced evolved machine type communications (eMTC). The second type of communication scenario is, for example, a communication scenario requiring a transmission performance less than the first threshold.

In mode 3, the second communication device can determine multiple frequency domain ranges by itself, which is conducive to improving the flexibility of dividing multiple frequency domain ranges. In addition, when the second communication device determines that the communication scenario has higher requirements for transmission performance, the first sub-band can be divided into a larger number of frequency domain ranges, which is conducive to more fine division of the frequency domain range on the first sub-band.

The above-mentioned methods 1, 2 and 3 are examples of the methods for the second communication device to determine multiple frequency ranges. In fact, there may be many ways for the second communication device to determine multiple frequency ranges, and the embodiments of the present application do not specifically limit this.

Optionally, the maximum frequency of the yth frequency domain range among the multiple frequency domain ranges included in the first sub-band may be less than or equal to the minimum frequency of the y+1th frequency domain range. Alternatively, the maximum frequency of the y+1th frequency domain range among the multiple frequency domain ranges included in the multiple frequency domain ranges may be less than or equal to the minimum frequency of the yth frequency domain range, where the value of y is less than the number of the multiple frequency domain ranges included in the first sub-band.

The above is an introduction to the second communication device determining multiple frequency domain ranges of the first sub-band. In fact, the second communication device can determine the multiple frequency domain ranges included in any sub-band included in the first CC according to any of the above methods.

For example, the first CC includes a first subband and a second subband, both of which are uplink subbands, and the frequency domains of the first subband and the second subband may be discontinuous. The second communication device may respectively determine the multiple frequency domain ranges included in the first subband and the multiple frequency domain ranges included in the second subband, wherein the method for determining the multiple frequency domain ranges included in the second subband may refer to the content of determining the multiple frequency domain ranges included in the first subband in the previous text. Optionally, the maximum frequency of the y+1th frequency domain range among the multiple frequency domain ranges included in the first subband may be less than or equal to the minimum frequency of the yth frequency domain range. The maximum frequency of the yth frequency domain range among the multiple frequency domain ranges included in the second subband may be less than or equal to the minimum frequency of the y+1th frequency domain range, and the value of y may refer to the previous text.

Optionally, the maximum frequency of the yth frequency domain range among the multiple frequency domain ranges included in the first sub-band may be less than or equal to the minimum frequency of the y+1th frequency domain range. The maximum frequency of the y+1th frequency domain range among the multiple frequency domain ranges included in the second sub-band may be less than or equal to the minimum frequency of the yth frequency domain range, and the value of y may refer to the above text.

For example, one CC includes subband 0, subband 1, and subband 2, with subband 0 or subband 2 being an example of the first subband, the maximum frequency of subband 0 is less than or equal to the minimum frequency of subband 1, and the minimum frequency of subband 2 is greater than or equal to the maximum frequency of subband 1. Subband 0 and subband 2 may be, for example, uplink subbands, and subband 1 is a downlink subband.

The second communication device may determine the multiple frequency domain ranges included in sub-band 0 and sub-band 2 in any manner. Among them, the maximum frequency of the y+1th frequency domain range among the multiple frequency domain ranges included in sub-band 0 may be less than or equal to the minimum frequency of the yth frequency domain range. The maximum frequency of the yth frequency domain range among the multiple frequency domain ranges included in sub-band 1 may be less than or equal to the minimum frequency of the y+1th frequency domain range, and the value of y may refer to the above.

S502: The second communication device sends first information to the first communication device. Correspondingly, the first communication device receives the first information from the second communication device. The first information may indicate a first power control parameter set.

For example, the first information may be carried in a first signaling or downlink control information (DCI). The second communication device sends the first signaling to the first communication device. Accordingly, the first communication device receives the first information from the second communication device, which is equivalent to the first communication device receiving the first information. The first signaling is, for example, high-level signaling or proprietary signaling, and the high-level signaling is, for example, radio resource control (RRC) signaling.

In the case where the first information is carried in the DCI, the first information may indicate the first power control parameter set through field 1 in the DCI. In other words, field 1 is used to indicate the first power control parameter set. Field 1 may also be referred to as a second field, and field 1 is, for example, a sounding reference signal resource index (SRI) field in the DCI.

The first power control parameter set includes a set of power control parameters corresponding to each frequency domain range in the N frequency domain ranges, that is, the first power control parameter set includes N groups of power control parameters. N is an integer greater than 1. The N groups of power control parameters are used to determine the power control parameters used by the N frequency domain ranges, and the power control parameters used by the N frequency domain ranges can be used to determine the power of sending signals on the first subband, or simply referred to as the sending (or transmitting) power. For example, the first subband is used to send uplink signals, and accordingly, the N groups of power control parameters are used to determine the power of sending uplink signals on the first subband.

One set of power control parameters in the N sets of power control parameters corresponds to one frequency range in the N frequency domain ranges. The N frequency domain ranges belong to the multiple frequency domain ranges included in the first sub-band. In other words, the N frequency domain ranges are subsets of the multiple frequency domain ranges included in the first sub-band. Accordingly, N may be less than or equal to the number of the multiple frequency domain ranges included in the first sub-band.

Each of the N groups of power control parameters may include one or more parameters. Optionally, each group of power control parameters includes a value of a target received power offset value P ₀ and/or a value of a path loss compensation factor α (alpha).

As an example, the second communication device may indicate to the first communication device the target received power on each PRB on the first sub-band, wherein the target received power on any two PRBs on the first sub-band may be the same.

Optionally, the second communication device may indicate the target received power on each PRB on the first subband to the first communication device through high-layer signaling.

In the embodiment of the present application, the power control parameters corresponding to at least two of the N frequency domain ranges included in the first power control parameter set are different. In other words, there are at least two groups of power control parameters that are different among the N groups of power control parameters. The difference between the two groups of power control parameters can be understood as the difference between the parameters included in one group of power control parameters and the parameters included in another group of power control parameters. The difference between the two groups of power control parameters can specifically include that the parameters included in one group of power control parameters and the parameters included in another group of power control parameters have at least one different parameter.

For example, N groups of power control parameters include 3 groups of power control parameters (specifically including a first group of power control parameters, a second group of power control parameters and a third group of power control parameters). The first group of power control parameters may include: P ₀ =12, α=0.6, the second group of power control parameters may include: P ₀ =12, α=0.7, and the third group of power control parameters may include: P ₀ =12, α=0.8. It can be seen that the three groups of power control parameters are different.

The following introduces the manner in which the first information indicates the first power control parameter set.

In the first type, the first information includes a first index of a first power control parameter set.

The first index is used to indicate the first power control parameter set. For example, the first communication device may include second information, the second information indicating multiple first indexes and multiple power control parameter sets. Among them, one of the multiple first indexes corresponds to a power control parameter set in multiple power control parameter sets. The multiple power control parameter sets include the first power control parameter set. The second communication device indicates the first index of the first power control parameter set to the first communication device, and the first communication device can also determine the first power control parameter set according to the first index of the first power control parameter set.

The second information may be configured by protocol in the first communication device and the second communication device, or may be received by the first communication device from the second communication device.

Optionally, the first subband is used to transmit an uplink signal carried on PUSCH, and the first index may be, for example, a physical uplink shared channel power control identifier (sri-PUSCH-PowerControl Id).

In a possible implementation manner, if the N frequency domains are multiple frequency domain ranges included in the first sub-band, the first communication device may determine the N frequency domain ranges included in the first sub-band by itself.

For example, the first communication device may adopt the aforementioned method 1 to determine N frequency domain ranges.

Alternatively, the first communication device may determine N frequency domain ranges using the first sub-method under the aforementioned method 2.

Alternatively, the first communication device may determine N frequency domain ranges using the second sub-method under the aforementioned method 2.

The above is an example of how the first communication device determines N frequency domain ranges. In fact, there are many ways for the first communication device to determine N frequency domain ranges, and the embodiments of the present application do not specifically limit this.

In another possible implementation, the first communication device may also receive information about the frequency domain range corresponding to each group of power control parameters in N groups of power control parameters in each power control parameter set of multiple power control parameter sets from the second communication device. The following is an introduction taking the information about the frequency domain range corresponding to one group of power control parameters in N groups of power control parameters as an example.

In order to simplify the description, in the embodiment of the present application, the frequency domain range corresponding to a group of power control parameters in N groups of power control parameters is referred to as the first frequency domain range, and accordingly, the information of the frequency domain range corresponding to a group of power control parameters in N groups of power control parameters is referred to as the information of the first frequency domain range.

Example (1), the information of the first frequency domain range includes a second index of the first frequency domain range.

In this case, the first communication device may include third information indicating N second indexes and N frequency domain ranges. One second index among the N second indexes corresponds to one frequency domain range among the N frequency domain ranges. In example (1), the first communication device may determine the first frequency domain range according to the second index corresponding to the first frequency domain range and the third information.

Please refer to Table 5 below, which is an example of second information provided in an embodiment of the present application.

table 5

As shown in Table 5 above, the second information indicates two power control parameter sets (specifically, power control parameter set 1 and power control parameter set 2 shown in Table 1). Power control parameter set 1 includes a set of power parameters in frequency domain range 1 of P _{0 =} 12, α = 0.9, a set of power parameters in frequency domain range 2 of P _{0 =} 12, α = 0.8, and a set of power control parameters in frequency domain range 3 of P _{0 =} 12, α = 0.7. Power control parameter set 2 includes a set of power parameters in frequency domain range 1 of P _{0 =} 12, α = 0.8, a set of power parameters in frequency domain range 2 of P _{0 =} 12, α = 0.7, and a set of power control parameters in frequency domain range 3 of P _{0 =} 12, α = 0.7.

For example, if the first index indicated by the first information is 1, then the first communication device determines that the first power control parameter set is power control parameter set 1 in Table 1 above.

Example (2): The information of the first frequency domain range includes at least two of the starting frequency, length and ending frequency of the first frequency domain range.

In example (2), the first communication device may determine the first frequency domain range based on at least two of a starting frequency, a length, and an ending frequency of the first frequency domain range.

In this manner, the second communication device can flexibly determine the first power control parameter from a plurality of power control parameter sets and notify the first communication device of the first power control parameter set. In addition, the first information includes the first index of the first power control parameter instead of the first power control parameter, which is conducive to reducing the number of bits occupied by the first information.

Example (3), the information of the first frequency domain range includes a bitmap, and the bitmap indicates the first frequency domain range.

Exemplarily, the first communication device may determine the first frequency domain range according to a bit map corresponding to the first frequency domain range.

Example (4): The information of the first frequency domain range includes the identifier (ID) of the starting PRB of the first frequency domain range, the number of PRBs included and at least two of the end PRB ID. The identifier can also be called an index.

Second, the first information includes a first power control parameter.

In the embodiment of the present application, the first information directly carries the first power control parameter, that is, the first information directly carries N groups of power control parameters.

As an example, the first information may further include information about the frequency domain range corresponding to each group of power control parameters in the N groups of power control parameters. The content of the frequency domain range information may refer to the content in the foregoing text.

In a possible implementation manner, a value of a group of power control parameters corresponding to each frequency domain range in the N frequency domain ranges is related to interference suffered by the frequency domain range.

Exemplarily, a set of power control parameters for a certain frequency domain range is positively correlated with the interference received by the frequency domain range. In other words, the greater the interference received by a certain frequency domain range, the larger the set of power control parameters for the frequency domain range; and the smaller the interference received by a certain frequency domain range, the smaller the set of power control parameters for the frequency domain range.

For example, if the interference received in frequency domain range 1 is greater than the interference received in frequency domain range 2, then the power calculated according to a set of power control parameters corresponding to frequency domain range 1 may be greater than the power calculated according to a set of power control parameters corresponding to frequency domain range 2. The interference includes CLI.

In a possible implementation manner, the first information may also be used to indicate a second power control parameter set for the second subband, where the second power control parameter set includes a power control parameter set corresponding to each frequency domain range of the N frequency domain ranges included in the second subband.

In another possible implementation, the N groups of power control parameters included in the first power control parameter set also correspond to the N frequency domain ranges included in the second sub-band, wherein a group of power control parameters corresponds to one frequency domain range in the second sub-band. In other words, the N frequency domain ranges of the first sub-band and the N frequency domain ranges of the second sub-band both correspond to the first power control parameter set. It can be further understood that the first sub-band and the second sub-band both share the first power control parameter set. It can be understood that one group of power control parameters in the N groups of power control parameters included in the first power control parameter set is a group of power control parameters for one frequency domain range in the N frequency domain ranges included in the first sub-band, and one group of power control parameters in the N groups of power control parameters is a group of power control parameters for one frequency domain range in the N frequency domain ranges included in the second sub-band.

For example, the first subband includes frequency domain range 1, frequency domain range 2 and frequency domain range 3, the second subband includes frequency domain ranges 4, 5 and 6, and the first power control parameter set includes a first group of power control parameters, a second group of power control parameters and a third group of power control parameters. Then the frequency domain range 1 of the first subband and the frequency domain range 4 of the second subband can correspond to the first group of power control parameters; the frequency domain range 2 of the first subband and the frequency domain range 5 of the second subband can correspond to the second group of power control parameters; the frequency domain range 3 of the first subband and the frequency domain range 6 of the second subband can correspond to the third group of power control parameters.

S503: The first communication device determines the power of sending signals on the first sub-band according to the first power control parameter set. For the sake of distinction, in the embodiment of the present application, the power of sending signals on the first sub-band is referred to as transmission power, which may also be referred to as transmit power.

In the case where N is equal to the number of multiple frequency domain ranges included in the first sub-band, the first communication device can determine the power component corresponding to each frequency domain range in the N frequency domain ranges according to the N groups of power control parameters, which is equivalent to determining the power components corresponding to the multiple frequency domain ranges included in the first sub-band, and obtaining N power components. The first communication device sums the N power components to obtain the summed result of the N power components, and obtains the power of the first communication device to send the signal on the first sub-band according to the summed result of the N power components and other power adjustment amounts.

For example, a method for determining the transmission power is specifically shown in the following formula (1).

The terminal device sends the s signal on the uplink BWP b activated in the carrier f included in the activated service cell c, where:

P _s,b,f,c (i,j,q _d ,l) represents the transmit power; _PCMAX,f,c (i) represents the maximum transmit power of the first communication device on the carrier f included in the service cell c at the transmission opportunity i; _PN represents the sum of multiple power components, and the unit is dBm; j represents the first index of the first power control parameter set; _qd represents the index of the reference signal corresponding to the path loss value, l is the index of the power control adjustment state, ΔTF _,b,f,c (i) is the power bias value determined by different MCS levels; _fb,f,c (i,l) is the closed-loop power control part, which can also be understood as the adjustment amount of the transmit power; c can be represented as the service cell c served by the first communication device, and the service cell c is the cell of the second communication device; f represents the carrier corresponding to the first subband; b represents the BWP where the first subband is located; s represents the signal sent on the first subband.

An example of a calculation formula for _PN is as follows.

Wherein, _Pn represents a power component corresponding to each frequency domain range in the multiple frequency domain ranges, in dBm, and K represents the number of the multiple frequency domain ranges.

An example of a calculation formula for P _n is as follows.

in, represents the sum of _p0 and the target received power in the nth frequency range among the multiple frequency ranges, represents α in the nth frequency range, represents the number of resource blocks (RBs) included in the nth frequency range scheduling, Δf represents the subcarrier spacing (SCS) of the first subband, and μ can be determined according to the SCS of the first subband.

Please refer to Table 6 below, which is a correspondence between μ and the SCS of the first sub-band provided in an embodiment of the present application.

Table 6

As shown in Table 6 above, if the SCS of the first sub-band is 15kHz, then the value of μ is 0; if the SCS of the first sub-band is 30kHz, then the value of μ is 1; if the SCS of the first sub-band is 60kHz, then the value of μ is 2; if the SCS of the first sub-band is 120kHz, then the value of μ is 3; if the SCS of the first sub-band is 240kHz, then the value of μ is 4.

In the case where N is less than the number of multiple frequency domain ranges included in the first sub-band, in other words, the first communication device has not yet determined the power control parameters of other frequency domain ranges. Other frequency domain ranges refer to frequency domain ranges other than the N frequency domain ranges in the multiple frequency domain ranges included in the first sub-band. Optionally, the first communication device may determine any one of the N groups of power control parameters as the power control parameters of other frequency domain ranges, which is equivalent to the first communication device obtaining multiple groups of power control parameters, and one group of power control parameters in the multiple groups of power control parameters corresponds to one frequency domain range in the multiple frequency domain ranges included in the first sub-band. The first communication device may determine the power of the signal sent by the first communication device on the first sub-band based on the multiple groups of power control parameters. Among them, the content of determining the power of the signal sent by the first communication device on the first sub-band can refer to the content of the previous text.

In a possible implementation manner, the first communication device may determine the power headroom of the first communication device according to the maximum power and the power of the signal sent on the first sub-band.
PH _type1,b,f,c (i,j,q _d ,l)＝ _PCMAX,f,c (i)-Ps _,b,f,c (i,j,q _d ,l) (4)

Among them, PH _type1,b,f,c (i,j,q _d ,l) represents the power margin.

Please refer to Figure 6, which provides a schematic diagram of the distribution of power components of multiple frequency ranges of a sub-band for an embodiment of the present application. In Figure 6, the first sub-band is sub-band 2, and sub-band 2 is used for uplink transmission, sub-band 1 is used for downlink transmission, and sub-band 2 includes frequency domain range a, frequency domain range b, and frequency domain range c as an example. As shown in Figure 6, the first communication device determines, according to the first power control parameter set, the power component corresponding to the frequency domain range a, the power component corresponding to the frequency domain range b, and the power component corresponding to the frequency domain range c in descending order. Since the frequency domain range a is closer to sub-band 1, if the power component corresponding to the frequency domain range a is larger, then the transmission performance of the first communication device in the frequency domain range a can be improved.

In a possible implementation, if the first subband and the second subband share the first power control parameter set, the first communication device may determine the power of the signal sent on the second subband. The manner in which the first communication device determines the power of the signal sent on the second subband may refer to the content of determining the power of the signal sent on the first subband in the foregoing text.

In another possible implementation, the first information may also be used to indicate a second power control parameter set for the second subband, where the second power control parameter set includes a power control parameter set corresponding to each frequency domain range in the N frequency domain ranges included in the second subband. Then the first communication device may determine the power of the signal sent on the second subband. The manner in which the first communication device determines the power of the signal sent on the second subband may refer to the content of determining the power of the signal sent on the first subband in the previous text.

In the embodiment of the present application, the second communication device may indicate to the first communication device a first power control parameter set (first power The rate control parameter set includes N groups of power parameters), and the power control parameters of at least two frequency domain ranges are different, which improves the flexibility of the power control parameters. In addition, in the embodiment of the present application, different power control parameters are configured for different frequency domain ranges, which is equivalent to configuring different powers for different frequency domain ranges of a sub-band, which is beneficial for the first communication device to reduce the influence of interference on different frequency domain ranges, and is beneficial for improving the transmission performance of the first communication device in the first sub-band.

The following takes the second information in Figure 5 as an example, which is received by the first communication device from the second communication device, as an example to introduce the communication method in the embodiment of the present application. Please refer to Figure 7, which is a flow chart of a communication method provided in the embodiment of the present application. The flow chart includes the following steps.

S701. A first communication device sends capability information to a second communication device. Correspondingly, the second communication device receives the capability information from the first communication device. The capability information indicates that the first communication device has the capability to use different power control parameters in at least two frequency domains of a subband.

Optionally, the capability information may indicate that the first communication device supports a maximum of N0 different power control parameters on one subband, where N0 is an integer greater than 2.

The ability of the first communication device to use different power control parameters in at least two frequency domains of a sub-band can be described as the first communication device having a differentiated power control capability, a power control capability, or a differentiated power transmission capability, etc. A sub-band is, for example, any sub-band used by the first communication device for uplink transmission.

Exemplarily, the first communication device actively sends capability information to the second communication device. Alternatively, the second communication device sends a query request to the first communication device. Accordingly, the first communication device receives the query request from the second communication device. The query request is used to request the capability of the first communication device. Furthermore, the first communication device sends capability information to the second communication device.

In a possible implementation manner, the capability information includes second indication information, where the second indication information is used to indicate whether the first communication device has the capability of using different power control parameters in at least two frequency domain ranges in a sub-band.

Exemplarily, the value of the second indication information is a first value, and the first value indicates that the first communication device has the ability to use different power control parameters in at least two frequency domains of a sub-band; or the value of the second indication information is a second value, and the second value indicates that the first communication device does not have the ability to use different power control parameters in at least two frequency domains of a sub-band. The first value is, for example, 1, and the second value is, for example, 0.

Optionally, when the second indication information is used to indicate that the first communication device has the ability to adopt different power control parameters in at least two frequency domain ranges in a subband, the second indication information may also specifically indicate that the first communication device supports a maximum of N0 different power control parameters on a subband, where N0 is an integer greater than 1.

For example, the value of the second indication information is the first value, which indicates that the first communication device has the ability to adopt different power control parameters in at least two frequency domain ranges in a subband, and the first communication device has the ability to adopt different power control parameters in N0 frequency domain ranges in a subband.

Alternatively, the capability information includes third indication information, and the third indication information is used to indicate the number N0 of frequency domain ranges that the first communication device supports using different power control parameters on a subband. The value of the third indication information is a third value, and the third value indicates that the first communication device has the ability to use different power control parameters in N0 frequency domain ranges of a subband. The third value and the first value may be the same or different.

In some cases, the second communication device may not need to obtain the capability information of the first communication device, that is, it is not necessary to perform step S701, that is, S701 is an optional step, which is indicated by a dotted line in FIG7. In some cases, for example, the protocol configures the first communication device to have or not have the ability to use different power control parameters in at least two frequency domain ranges of a sub-band. Or, the second communication device has determined that the first communication device has or does not have the ability to use different power control parameters in at least two frequency domain ranges of a sub-band.

S702. The second communication device determines multiple frequency domain ranges of a first sub-band.

The content of the first sub-band, the content of the multiple frequency domain ranges, and the method for the second communication device to determine the multiple frequency domain ranges can all refer to the above content.

S703: The second communication device sends information 1 to the first communication device. Accordingly, the first communication device receives information 1 from the second communication device. Information 1 may also be referred to as second information. The second information indicates a plurality of first indexes and a power control parameter set corresponding to each of the plurality of first indexes (i.e., a plurality of power control parameter sets).

The second information can also be understood as indicating the correspondence between the multiple first indexes and the multiple power control parameter sets. The content of the multiple first indexes and the content of the multiple power control parameters can refer to the content of the previous text.

Exemplarily, the second information may be carried in the second signaling. The second communication device sends the second signaling to the first communication device. Accordingly, the first communication device receives the second signaling from the second communication device, which is equivalent to the first communication device receiving the signaling from the second communication device. Information 1. The second signaling is, for example, a high-level signal or a dedicated signaling, and the high-level signaling is, for example, an RRC signaling. For example, the first subband is used to transmit an uplink signal carried on a PUSCH, and accordingly, the second information may be carried in a physical uplink shared channel power control (PUSCH-PowerControl) information element in the RRC signaling.

As an example, the second information further indicates information about the frequency domain range corresponding to each set of power control parameters in each power control parameter set in the multiple power control parameter sets. The content of the information about the frequency domain range corresponding to each set of power control parameters can refer to the content in the previous text.

Please refer to the following Table 7, which is an example of second information provided in an embodiment of the present application. Table 7 is an example of the frequency range indicated by the second information, including the starting frequency and the length.

Table 7

As shown in Table 7 above, the second information indicates two power control parameter sets (specifically, power control parameter set 1 and power control parameter set 2 shown in Table 7).

Power control parameter set 1 includes a set of power parameters in a frequency domain range [4.8GHz, 4.81GHz]: P ₀₌ 12, α=0.9, a set of power parameters in a frequency domain range [4.81GHz, 4.82GHz]: P ₀₌ 12, α=0.8, and a set of power control parameters in a frequency domain range [4.82GHz, 4.83GHz]: P ₀₌ 12, α=0.7.

Power control parameter set 2 includes a set of power parameters in a frequency domain range [4.8GHz, 4.81GHz] of P ₀₌ 11, α=0.9, a set of power parameters in a frequency domain range [4.81GHz, 4.82GHz] of P ₀₌ 12, α=0.8, and a set of power control parameters in a frequency domain range [4.82GHz, 4.83GHz] of P ₀₌ 11, α=0.8.

In a possible implementation, the second information further indicates at least one group of power control parameters, wherein each group of power control layer parameters is a group of power control parameters shared by multiple frequency domains. That is, if the first communication device uses a group of power control parameters in at least one group of power control parameters to determine power, then the power control parameters of the first communication device in multiple frequency domains of the first subband are all the group of power control parameters, that is, the power control parameters of the first communication device in multiple frequency domains of the first subband are the same. In order to simplify the expression, the at least one group of power control parameters also indicated by the second information may be referred to as K1 group of power control parameters below. K1 is a positive integer.

As an example, the second information may indicate at least one third index and at least one set of power control parameters, wherein one third index in the at least one third index corresponds to one set of power control parameters in the at least one set of power control parameters.

The execution order of the above S702 and S703 can be arbitrary, for example, S702 is executed first, and then S703; or S703 is executed first, and then S702; or S702 and S703 are executed at the same time.

In a possible implementation manner, S703 is an optional step, which is indicated by a dotted line in FIG. 7 .

S704: The second communication device sends information 2 to the first communication device. Accordingly, the first communication device receives information 2 from the first communication device. Information 2 may also be referred to as third information. Information 2 indicates N second indexes and N frequency domain ranges. Information 2 may be equivalent to indicating a correspondence between the N second indexes and the N frequency domain ranges.

When information 2 can indicate N frequency domain ranges, it can indicate at least two of the starting frequency, length, and ending frequency of each frequency domain range in the N frequency domain ranges, or information 2 can indicate the N frequency domain ranges through N bitmaps, wherein one bitmap corresponds to one frequency domain range.

In S704, an example is given in which the first communication device receives the second information from the second communication device.

In the case where the second information further indicates a second index of a frequency domain range corresponding to each group of power control parameters in each power control parameter set in a plurality of power control parameter sets, the second communication device may indicate information 2 to the first communication device. For example, information 2 may be carried in a third signaling. The second communication device sends the third signaling to the first communication device. Accordingly, the first communication device receives the third signaling from the second communication device, which is equivalent to the first communication device receiving information 2 from the second communication device. The third signaling is, for example, a high-level signaling or a proprietary signaling. Signaling. An example of the second information may be as shown in Table 5 above.

The first communication device may determine N frequency domain ranges by itself, or the N frequency domain ranges may be preconfigured by the protocol. In this case, there is no need to execute step S704, that is, S704 is an optional step, which is indicated by a dotted line in FIG. 7 .

S705: The second communication device sends information 3 to the first communication device. Correspondingly, the first communication device receives information 3 from the second communication device. Information 3 may also be referred to as first indication information. Information 3 may indicate the number of N frequency domain ranges.

In the case where the N frequency domain ranges are multiple frequency domain ranges of the first sub-band, the second communication device may indicate the number of the N frequency domain ranges to the first communication device, and the first communication device may directly determine the N frequency domain ranges according to the number of the N frequency domain ranges and the bandwidth (or length) of the first sub-band. The manner in which the first communication device determines the N frequency domain ranges may refer to the content of the second communication device determining the N frequency domain ranges discussed above.

Exemplarily, the first communication device may receive information 3 from the second communication device, and determine N frequency domain ranges according to information 3 and the first corresponding relationship. The information 3 indicates the number of N frequency domain ranges included in the first sub-band. The content of the first corresponding relationship may refer to the content of the previous text. The manner in which the first communication device determines the N frequency domain ranges may refer to the content of the second communication device determining the N frequency domain ranges discussed above.

Alternatively, in the case where a number interval of the PRBs of the subband in the second corresponding relationship corresponds to multiple values of the number of multiple frequency domain ranges included in the subband, the first communication device may receive information 3 from the second communication device, and determine N frequency domain ranges according to information 3 and the second corresponding relationship. Wherein, information 3 indicates the number of N frequency domain ranges included in the first subband. Wherein, the content of the second corresponding relationship can refer to the content of the previous text. Wherein, the way in which the first communication device determines the N frequency domain ranges can refer to the content of the second communication device determining the N frequency domain ranges discussed above.

As an example, S705 is an optional step, which is indicated by a dotted line in FIG. 7 .

As an example, information 3 may be carried in the first information. In this case, when the second communication device sends the first information to the first communication device, it is equivalent to sending information 3.

S704 and S705 are two ways for the first communication device to determine N frequency domain ranges, and the first communication device can execute S704 or S705.

S706: The second communication device sends information 4 to the first communication device. Correspondingly, the first communication device receives information 4 from the second communication device. Information 4 may also be referred to as first information. Information 4 indicates a first power control parameter set.

The content of the message 4 and the content of the message 4 sent by the second communication device can refer to the above content.

In a possible implementation manner, the information 4 further indicates that the first communication device uses different power control parameters in at least two frequency domains of the first sub-band.

For example, information 4 may implicitly indicate that the first communication device uses different power control parameters in at least two frequency domain ranges of the first sub-band. In the case where the first power control parameter set indicated by information 4 includes N groups of power control parameters, N is equal to the number of multiple frequency domain ranges included in the first sub-band, which is equivalent to the second communication device implicitly indicating that the first communication device uses different power control parameters in at least two frequency domain ranges of the first sub-band.

Alternatively, the N is smaller than the number of the multiple frequency domain ranges included in the first sub-band, which is equivalent to the second communication device implicitly indicating that the first communication device adopts the same power control parameter in at least two frequency domain ranges of the first sub-band.

Alternatively, the information 4 indicates that the frequency domain range corresponding to a set of power control parameters is the frequency domain range of the first sub-band, which is equivalent to the second communication device implicitly indicating that the first communication device uses the same power control parameters in at least two frequency domain ranges of the first sub-band.

As an example, the second communication device may also send information 5 to the first communication device. Accordingly, the first communication device receives information 5 from the second communication device. Information 5 may also be referred to as fourth information. Information 5 is used to indicate that the first communication device uses different power control parameters in at least two frequency domains of the first subband.

Optionally, information 5 may be carried in information 4. In this case, the second communication device sending information 3 to the first communication device is equivalent to the second communication device sending information 5 to the first communication device.

Exemplarily, the value of information 5 is a third value, and the third value indicates that the first communication device uses different power control parameters in at least two frequency domain ranges of the first sub-band. The value of information 5 is a fourth value, and the fourth value indicates that the first communication device uses the same power control parameter in multiple frequency domain ranges of the first sub-band. The third value is, for example, 1, and the fourth value is, for example, 0.

Optionally, information 5 may be carried in higher layer signaling or in a newly added field in DCI or in redundant bits in DCI, which are respectively introduced below.

Method (1), information 5 is carried in a newly added field in the higher layer signaling or DCI.

Exemplarily, the value of the newly added field in the high-level signaling or DCI is the third value, which is equivalent to information 5 explicitly indicating the first The communication device uses different power control parameters in at least two frequency domain ranges of the first subband. The value of the newly added field in the high-level signaling or DCI is the fourth value, which is equivalent to information 5 indicating that the first communication device uses the same power control parameters in at least two frequency domain ranges of the first subband, that is, it is equivalent to indicating that the first communication device uses the same set of power control parameters in multiple frequency domain ranges of the first subband.

Alternatively, if the high-level signaling or DCI includes a newly added field, it indicates that the first communication device uses different power control parameters in at least two frequency domain ranges of the first subband. If the high-level signaling or DCI does not include a newly added field, it indicates that the first communication device does not use different power control parameters in at least two frequency domain ranges of the first subband, which is equivalent to indicating that the first communication device uses the same set of power control parameters in multiple frequency domain ranges of the first subband.

Method (2): Information 5 is carried in the redundant bits in the DCI.

The following is an introduction to possible redundant bits in DCI.

The frequency domain of a BWP includes subband 1 and subband 2. In the first time unit, subband 1 is used for uplink transmission and subband 2 is used for downlink transmission. In the second time unit, both subband 1 and subband 2 are used for uplink transmission. The meaning of the time unit can be referred to the content discussed above. The frequency domain of a BWP includes PRBs, the index of the starting PRB is Each RBG contains at most P PRBs, where P is based on and determined by high-level signaling from the second communication device, wherein the number of RBGs included in the BWP is Among them, the number of RBs contained in the first RBG is The number of PRBs contained in the last RBG is and or and The number of PRBs contained in other RBGs is P.

The index of the last PRB included in the nth RBG is less than the index of the first PRB included in the (n+1)th RBG, and n is a positive integer.

In one time unit, DCI may use an N _RBG bitmap to indicate an uplink resource allocation method of type 0, where N _RBG represents the number of RBGs used for uplink transmission this time. The uplink resource allocation method of type 0 means that a plurality of discontinuous or continuous RBGs corresponding to one time unit are used for uplink transmission. The nth bit in the bitmap is used to indicate whether the nth RBG is used for uplink transmission. For example, if the nth bit is 1, it indicates that the nth RBG is used for uplink transmission, and if the nth bit is 0, it indicates that the nth RBG is not used for uplink transmission. In other words, in this method, DCI needs to use at least N _RBG bits to indicate an uplink resource allocation method of type 0.

An embodiment of the present application may be for power control on a first time unit. In the first time unit, the PRB where the first subband is located can be used for uplink transmission, so the number of RBGs used for uplink transmission may be less than N _RBG . In other words, DCI can be used to indicate that the number of bits required for RGB of uplink transmission is less than N _RBG . In other words, DCI will have redundant bits, so the second communication device can use the redundant bits in DCI to carry the above information 4.

Please refer to Figure 8, which is a schematic diagram of a DCI indicating multiple RBGs used for this uplink transmission. As shown in Figure 8, the BWP includes corresponding 10 RBGs, specifically RBG0-RBG9 as shown in Figure 8. The second communication device determines that RBG0-RBG2 and RBG5-RBG7 can be used for this uplink transmission, so it determines that the corresponding values of RBG0-RBG2 and RBG5-RBG7 are 1. Correspondingly, after the first communication device receives the DCI, it can be determined that RBG0-RBG2 and RBG5-RBG7 can be used for this uplink transmission. In addition, it can be seen from Figure 8 that the DCI uses 10 bits to indicate the RBG used by the first communication device for uplink transmission this time.

Please refer to Figure 9, which is a schematic diagram of a DCI on a BWP indicating multiple RBGs used for this uplink transmission. The BWP includes 10 corresponding RBGs. In the first time unit, subband 1 includes RBG3-RBG 5, subband 2 includes RBG0-RBG 2, and subband 3 includes RBG7-RBG 9. As shown in Figure 9, the RBGs that can be used for uplink transmission at this time include RBG3-RBG6. In this case, the DCI only needs to use 4 bits to indicate the RBGs used for this uplink transmission in these four resource block groups. It can be seen that there are 6 redundant bits in the DCI. Therefore, in the embodiment of the present application, one or more of the 6 redundant bits can be used to carry information 4.

When indicating the uplink resource allocation mode of type 1 in DCI, DCI may use the frequency domain resource allocation (FDRA) field indication The PRB used for uplink transmission this time among the PRBs. In the FDRA mode, the DCI may indicate that several consecutive PRBs are used for uplink transmission, and the number of bits required for the PRBs indicated by the DCI for this uplink transmission is related to the bandwidth of the BWP. In the embodiment of the present application, the number of resource blocks corresponding to one time unit for uplink transmission may be smaller, so there will be redundant bits in the DCI, so the second communication device may use the redundant bits in the DCI to carry information 4.

For example, the number of RBs included in a BWP is Then the number of bits required for DCI to indicate the RBG used for this uplink transmission can be expressed as: Since the PRB used for uplink transmission in the first time unit in the embodiment of the present application Number is less than Therefore, DCI also has redundant bits.

In a possible implementation, if the first communication device does not support the ability to use different power control parameters in at least two frequency domain ranges of a sub-band, or the second communication device determines that the first communication device can use the same set of power control parameters in different frequency domain ranges of the first sub-band, then the second communication device can send information 6 to the first communication device. Accordingly, the first communication device can receive information 6 from the second communication device. Information 6 can also be referred to as fifth information. Information 6 is used to indicate a set of power control parameters in at least one group of power control parameters, that is, information 6 indicates a set of power control parameters in the K1 group of power control parameters.

As an example, the information 6 includes a third index of a group of power control parameters in the K1 group of power control parameters.

Optionally, the information 6 may also instruct the first communication device to use the same power control parameter in multiple frequency domain ranges included in the first sub-band.

The above possible implementation manner and the process of S706 can be regarded as two situations, that is, either S706 is executed, or the above possible implementation manner is executed.

S707. The first communication device determines the power of sending a signal on the first subband according to the first power control parameter set.

The content of the first communication device determining the power of sending a signal on the first sub-band according to the first power control parameter set can refer to the content of the previous text.

In a possible implementation manner, if the first communication device receives the information 6 from the second communication device, the first communication device may determine the power of sending the signal on the first sub-band according to a set of power control parameters indicated by the information 6 .

For example, a calculation formula for determining the power of a signal transmitted on the first sub-band according to a set of power control parameters indicated by information 6 is as follows.

The meaning of each letter in formula (5) can be found in the previous text. represents the sum of p ₀ and the target received power of the first subband.

In another possible implementation, if N is less than the number of multiple frequency domain ranges included in the first sub-band, the first communication device may determine the power of sending the signal on the first sub-band according to a set of power control parameters in the K1 group of power control parameters. In order to simplify the description, the embodiment of the present application refers to a set of power control parameters in at least one set of power control parameters as the first set of power control parameters. The manner in which the first communication device determines the first set of power control parameters may be arbitrary. For example, the first communication device may randomly select a set of power control parameters from the K1 group of power control parameters.

In the embodiment of the present application, the second communication device may indicate multiple power control parameter sets to the first communication device, and the second communication device may indicate the first power control parameter set to the first communication device according to the actual situation, thereby improving the flexibility of the power control parameters. In addition, the first communication device may also indicate capability information to the second communication device, so that the second communication device can determine the capability of the first communication device to support the use of different power control parameters in at least two frequency domains, thereby avoiding the situation where the second communication device indicates the first power control parameter set but the first communication device cannot use the first power control parameter set.

In order to improve the flexibility of configuring power control parameters, an embodiment of the present application also provides a communication method, in which a second communication device may send first information indicating a first power control parameter set to a first communication device, the first power control parameter set including N groups of power control parameters, one group of power control parameters in the N groups of power control parameters corresponding to N frequency domain ranges included in a subband (such as the first subband), and the first communication device may determine the power of the signal sent on the first subband based on one group of power control parameters in the N groups of power control parameters. Since there are more power control parameters available for the first communication device to choose from, it is beneficial to improve the flexibility of the indicated power control parameters.

Please refer to Figure 10, which is a flow chart of a communication method provided in an embodiment of the present application. The flow chart includes the following steps.

S1001. A first communication device sends capability information to a second communication device. Correspondingly, the second communication device receives capability information from the first communication device. The capability information indicates that the first communication device has the capability to use different power control parameters in at least two frequency domains of a subband.

The content of the capability information and the method for the first communication device to send the capability information may refer to the above content.

As an example, S1001 is an optional step, which is indicated by a dotted line in FIG. 10 .

S1002. The second communication device determines multiple frequency domain ranges of a first sub-band.

The content of the first sub-band, the content of the multiple frequency domain ranges, and the method of determining the multiple frequency domain ranges can all refer to the content of the previous text.

S1003: The second communication device sends information 1 to the first communication device. Correspondingly, the first communication device receives information 1 from the second communication device. Information 1. Information 1 indicates multiple first indexes and N frequency domain ranges. Information 1 can also be called second information.

The content of the information 1, the content of the multiple first indexes, the content of the multiple frequency domain ranges, and the way in which the second communication device sends the information 1 can all refer to the previous content.

As an example, S1003 is an optional step, which is indicated by a dotted line in FIG. 10 .

S1004: The second communication device sends information 2 to the first communication device. Correspondingly, the first communication device receives information 2 from the second communication device. Information 2 indicates N second indexes and N frequency domain ranges. Information 2 may also be referred to as third information.

The content of the information 2, the content of the multiple second indexes, the content of the N frequency domain ranges, and the way in which the second communication device sends the information 2 can all refer to the previous content.

As an example, the execution order of S1003 and S1004 may be arbitrary, for example, S1003 is executed first, and then S1004; or S1004 is executed first, and then S1003; or S1003 and S1004 are executed simultaneously.

As an example, S1004 is an optional step, which is indicated by a dotted line in FIG. 10 .

S1005: The second communication device sends information 3 to the first communication device. Correspondingly, the first communication device receives information 3 from the second communication device. Information 3 indicates the number of N frequency domain ranges.

Among them, the content of information 3 can refer to the content discussed in the previous article.

As an example, S1005 is an optional step, which is indicated by a dotted line in FIG. 10 .

As an example, S1004 and S1005 are two ways for the first communication device to determine N frequency domain ranges, and the first communication device may execute S1004 or S1005.

S1006: The second communication device sends information 4 to the first communication device. Correspondingly, the first communication device receives information 4 from the second communication device. Information 4 indicates a first power control parameter set. Information 4 may also be referred to as first information.

The content of the information 4, the content of the first power control parameter set, and the manner in which the second communication device sends the information 4 may all refer to the previous content.

S1007. The first communication device determines that N is smaller than the number of multiple frequency domain ranges included in the first sub-band.

The first communication device obtains the first power control parameter set according to information 4, and thus obtains N groups of power control parameters. The first communication device may determine that the number N of the N groups of power control parameters is less than the number of multiple frequency domain ranges included in the first sub-band. In other words, the first communication device is equivalent to determining that information 4 indicates power control parameters corresponding to some frequency domains in the multiple frequency domain ranges.

As an example, S1007 is an optional step, which is indicated by a dotted line in FIG. 10 .

S1008. The first communication device determines the power of sending a signal on the first subband according to a set of power control parameter sets in the first power control parameter set. To simplify the description, in the embodiment of the present application, a set of power control parameter sets in the first power control parameter set is referred to as a second set of power control parameters.

The following describes the manner in which the first communication device determines the second set of power control parameters.

1. The first communication device selects a group of power control parameters corresponding to a frequency domain range with the largest center frequency from the first power control parameter set and determines it as the second group of power control parameters.

The first power control parameter set includes N groups of power control parameters, and one group of power control parameters in the N groups of power control parameters corresponds to a frequency range. In this manner, the first communication device can determine the center frequency of each frequency domain range in the N frequency domain ranges, and use a group of power control parameters corresponding to the frequency domain range with the largest center frequency as the second power control parameters.

2. The first communication device selects a group of power control parameters corresponding to a frequency range with the smallest center frequency from the first power control parameter set and determines it as the second group of power control parameters.

The first communication device may determine the center frequency of each frequency domain range in the N frequency domain ranges, and use a set of power control parameters corresponding to a frequency domain range with the smallest center frequency as the second power control parameters.

The first communication device may determine the power of sending the signal on the first sub-band according to the second set of power control parameters. The method of determining the power of sending the signal on the first sub-band according to the second set of power control parameters may refer to the content of determining the power of sending the signal on the first sub-band according to a set of power control parameters indicated by information 5 in the previous text.

The above 1 and 2 are examples of the method for determining the second set of power control parameters. In fact, there are many other methods for the first communication device to determine the second set of power control parameters, and the embodiments of the present application do not make specific limitations on this.

In the embodiment of the present application, the second communication device may indicate the first power control parameter set to the first communication device, and the first communication device may flexibly select a set of power control parameters in the first power control parameter set for power calculation, thereby improving the flexibility of the power control parameters. In addition, the power control parameters selected by the first communication device each time may be different, thereby improving the randomness of the power determined by the first communication device, which is also beneficial to improving the transmission performance of the first communication device to a certain extent.

Please refer to FIG. 11 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

As shown in FIG. 11 , the communication device 1100 includes a transceiver module 1101 and a processing module 1102 .

In the embodiment of the present application, the communication device 1100 may be used to implement the function of a first communication device, such as the function of the first communication device in FIG. 5 or 7 .

For example, the transceiver module 1101 may be used to execute step S502; and the processing module 1102 may be used to execute step S503.

For another example, the transceiver module 1101 may be used to execute step S706, and the processing module 1102 may be used to execute step S707. Optionally, the transceiver module 1101 may also be used to execute steps S701, S703, S704, and S705.

Please refer to FIG. 12 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

As shown in FIG. 12 , the communication device 1200 includes a transceiver module 1201 and a processing module 1202 .

In the embodiment of the present application, the communication device 1200 may be used to implement the function of a second communication device, such as the function of the second communication device in FIG. 5 or FIG. 7 .

For example, the transceiver module 1201 may be used to execute step S502; and the processing module 1202 may be used to execute step S503.

For another example, the transceiver module 1201 may be used to execute step S706, and the processing module 1202 may be used to execute step S702. Optionally, the transceiver module 1201 may also be used to execute steps S701, S703, S704, and S705.

Please refer to FIG. 13 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

As shown in FIG. 13 , the communication device 1300 includes a transceiver module 1301 and a processing module 1302 .

In the embodiment of the present application, the communication device 1300 may be used to implement the function of a first communication device, such as the function of the first communication device in FIG. 10 .

For example, the transceiver module 1301 is used to execute step S1006, and the processing module 1302 is used to execute step S1008. Optionally, the transceiver module 1301 can be used to execute steps S1001 and S1003-S1006.

Please refer to FIG. 14 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

As shown in FIG. 14 , the communication device 1400 includes a transceiver module 1401 and a processing module 1402 .

In the embodiment of the present application, the communication device 1400 may be used to implement the function of a second communication device, such as the function of the second communication device in FIG. 10 .

For example, the transceiver module 1401 may be used to execute step S1006, and the processing module 1402 may be used to implement step S1002. Optionally, the transceiver module 1401 may also be used to implement steps S1001 and S1003-S1006.

Please refer to FIG. 15 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

As shown in FIG. 15 , the communication device 1500 includes a processor 1510 and a communication interface 1520. The processor 1510 and the communication interface 1520 are coupled to each other. It is understood that the communication interface 1520 may be a transceiver or an input/output interface. The processor 1510 and the communication interface 1520 may implement any of the communication methods implemented by the first communication device in FIG. 5 , FIG. 7 or FIG. 10 .

Processor 1510 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

Optionally, the communication device 1500 may further include a memory 1530 for storing instructions executed by the processor 1510 or storing input data required for the processor 1510 to execute instructions or storing data generated after the processor 1510 executes instructions.

Optionally, the processor 1510 is used to implement the functions of the above-mentioned processing module 1102, and the communication interface 1520 is used to implement the functions of the above-mentioned transceiver module 1101.

Optionally, the processor 1510 is used to implement the functions of the above-mentioned processing module 1302, and the communication interface 1520 is used to implement the functions of the above-mentioned transceiver module 1301.

Please refer to FIG. 16 , which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

As shown in FIG16 , the communication device 1600 includes a processor 1610 and a communication interface 1620. The processor 1610 and the communication interface 1620 are coupled to each other. The implementation of the processor 1610 can refer to the content of the processor 1510 in the previous text. It can be understood that the communication interface 1620 can be a transceiver or an input-output interface. Among them, the processor 1610 and the communication interface 1620 can implement any of the communication methods implemented by the second communication device in FIG5 , FIG7 or FIG10 in the previous text.

Optionally, the communication device 1600 may further include a memory 1630 for storing instructions executed by the processor 1610 or storing input data required for the processor 1610 to execute instructions or storing data generated after the processor 1610 executes instructions.

Optionally, the processor 1610 is used to implement the functions of the processing module 1202, and the communication interface 1620 is used to implement the transceiver module Functions of 1201.

Optionally, the processor 1610 is used to implement the functions of the above-mentioned processing module 1402, and the communication interface 1620 is used to implement the functions of the above-mentioned transceiver module 1401.

The embodiment of the present application provides a chip system, which includes: a processor and an interface. The processor is used to call and run instructions from the interface, and when the processor executes the instructions, any of the above communication methods is implemented, for example, any of the communication methods described in FIG. 5, FIG. 7 or FIG. 10.

An embodiment of the present application provides a computer-readable storage medium, which is used to store computer programs or instructions. When the computer-readable storage medium is executed, it implements any of the communication methods described above, for example, the communication method described in any of Figures 5, 7 or 10 above.

An embodiment of the present application provides a computer program product including instructions, which, when executed on a computer, implements any of the communication methods described above, for example, the communication method described in any one of FIG. 5 , FIG. 7 , or FIG. 10 .

The method steps in the embodiments of the present application can be implemented by hardware, or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. Of course, the processor and the storage medium can also be present in a base station or a terminal as discrete components.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

In the various embodiments of the present application, unless otherwise specified or provided in a logical conflict, the terms and/or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

A communication method, characterized in that it is applied to a first communication device, the method comprising:

Receive first information from a second communication device, where the first information indicates a first power control parameter set, where the first power control parameter set includes a set of power control parameters corresponding to each of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in a first sub-band, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges, the first sub-band is used to send a signal, and N is an integer greater than 1;

The power for sending the signal on the first subband is determined according to the first power control parameter set.
The method according to claim 1, characterized in that the method further comprises:

Receive second information from the second communication device, the second information indicating multiple first indexes and multiple power control parameter sets, wherein a first index among the multiple first indexes corresponds to a power control parameter set among the multiple power control parameter sets, and a power control parameter set among the multiple power control parameter sets includes a group of power parameters corresponding to each frequency domain range of the N frequency domain ranges; wherein the first information includes a first index corresponding to the first power control parameter set, and the multiple power control parameter sets include the first power control parameter set.
The method according to claim 2 is characterized in that the second information also indicates information about the frequency domain range corresponding to each group of power control parameters in each power control parameter set among the multiple power control parameter sets.
The method according to claim 3, characterized in that the information of the frequency domain range includes a second index of the frequency domain range; and/or,

The information of the frequency domain range includes at least two of a start frequency, a length, and an end frequency of the frequency domain range.
The method according to claim 4, characterized in that when the information of the frequency domain range includes a second index of the frequency domain range, the method further comprises:

Third information is received from the second communication device, where the third information indicates N second indexes and the N frequency ranges, and one second index of the N second indexes corresponds to one frequency domain range of the N frequency ranges.
The method according to any one of claims 1-5 is characterized in that the first information also includes fourth information, and the fourth information indicates that the first communication device adopts different power control parameters in at least two frequency domain ranges of the first subband.
The method according to claim 6 is characterized in that the first information is carried in downlink control information, and the fourth information is carried in redundant bits in the downlink control information.
The method according to any one of claims 1 to 7, characterized in that before determining, according to the first power control parameter set, the power for sending the signal on the first subband, the method further comprises:

The N is determined to be equal to the number of the plurality of frequency domain ranges included in the first sub-band.
The method according to any one of claims 1 to 8, characterized in that the method further comprises:

Capability information is sent to the second communication device, where the capability information is used to indicate that the first communication device has the capability of using different power control parameters in at least two frequency domain ranges of a sub-band.
The method according to any one of claims 2-5 is characterized in that the second information also indicates at least one set of power control parameters, and each set of power control parameters in the at least one set of power control parameters is a set of power control parameters shared by the multiple frequency domain ranges.
A communication method, characterized in that it is applied to a second communication device, the method comprising:

determining a plurality of frequency domain ranges of a first subband;

A first information is sent to a first communication device, wherein the first information indicates a first power control parameter set, wherein the first power control parameter set includes a group of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two frequency domain ranges of the N frequency domain ranges are different, the N frequency domain ranges belong to the multiple frequency domain ranges, and there is no overlap between any two frequency domain ranges of the multiple frequency domain ranges, and N is an integer greater than 1.
The method according to claim 11, characterized in that the method further comprises:

Sending second information to the first communication device, the second information indicating multiple first indexes and multiple power control parameter sets, one first index among the multiple first indexes corresponds to one power control parameter set among the multiple power control parameter sets, and one power control parameter set among the multiple power control parameter sets includes a group of power parameters corresponding to each frequency domain range of the N frequency domain ranges; wherein the first information includes a first index corresponding to the first power control parameter set, and the multiple power control parameter sets include the first power control parameter set.
The method according to claim 12 is characterized in that the second information also indicates information about the frequency domain range corresponding to each group of power control parameters in each power control parameter set among the multiple power control parameter sets.
The method according to claim 13, characterized in that the information of the frequency domain range includes a second index of the frequency domain range; and/or,

The information of the frequency domain range includes at least two of a start frequency, a length, and an end frequency of the frequency domain range.
The method according to claim 14, characterized in that when the information of the frequency domain range includes a second index of the frequency domain range, the method further comprises:

Third information is sent to the first communication device, where the third information indicates N second indexes and the N frequency ranges, and one second index of the N second indexes corresponds to one frequency domain range of the N frequency ranges.
The method according to any one of claims 11-15 is characterized in that the first information includes fourth information, and the fourth information indicates that the first communication device adopts different power control parameters in at least two frequency domain ranges of the first subband.
The method according to claim 16 is characterized in that the first information is carried in downlink control information, and the fourth information is carried in redundant bits of the downlink control information.
The method according to any one of claims 11 to 17, characterized in that the method further comprises:

Capability information is received from the first communication device, where the capability information is used to indicate that the first communication device has the capability of using different power control parameters in at least two frequency domains of a sub-band.
The method according to any one of claims 12-15 is characterized in that the second information also indicates at least one set of power control parameters, and each set of power control parameters in the at least one set of power control parameters is a set of power control parameters shared by the multiple frequency domain ranges.
A communication method, characterized in that it is applied to a first communication device, the method comprising:

Receive first information from a second communication device, where the first information indicates a first power control parameter set, where the first power control parameter set includes a set of power control parameters corresponding to each of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in a first sub-band, and there is no overlap between any two frequency domain ranges in the multiple frequency domain ranges, the first sub-band is used to send a signal, and N is an integer greater than 1;

The power of sending a signal on the first subband is determined according to a set of power control parameters in the first power control parameter set.
The method according to claim 20, characterized in that before determining the power of sending a signal on the first subband according to a set of power control parameters in the first power control parameter set, the method further comprises:

The N is determined to be smaller than the number of frequency domain ranges included in the first subband.
A communication device, comprising:

A transceiver module, configured to receive first information from a second communication device, wherein the first information indicates a first power control parameter set, wherein the first power control parameter set includes a group of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two frequency domain ranges of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in a first sub-band, and there is no overlap between any two frequency domain ranges of the multiple frequency domain ranges, the first sub-band is used to send a signal, and N is an integer greater than 1;

A processing module is used to determine the power of sending the signal on the first subband according to the first power control parameter set.
A communication device, comprising:

A processing module, configured to determine a plurality of frequency domain ranges of a first sub-band;

A transceiver module is used to send first information to a first communication device, where the first information indicates a first power control parameter set, where the first power control parameter set includes a group of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two of the N frequency domain ranges are different, the N frequency domain ranges belong to the multiple frequency domain ranges, and there is no overlap between any two of the multiple frequency domain ranges, and N is an integer greater than 1.
A communication device, comprising:

A transceiver module, configured to receive first information from a second communication device, wherein the first information indicates a first power control parameter set, wherein the first power control parameter set includes a group of power control parameters corresponding to each frequency domain range of N frequency domain ranges, and the power control parameters corresponding to at least two frequency domain ranges of the N frequency domain ranges are different, the N frequency domain ranges belong to multiple frequency domain ranges included in a first sub-band, and there is no overlap between any two frequency domain ranges of the multiple frequency domain ranges, the first sub-band is used to send a signal, and N is an integer greater than 1;

A processing module is used to determine the power of sending a signal on the first subband according to a set of power control parameters in the first power control parameter set.
A communication device, characterized in that it comprises a processor and a communication interface, wherein the communication interface is used to receive a signal from another device outside the communication device and transmit it to the processor or to send a signal from the processor to another device outside the communication device. In other devices, the processor executes code instructions through a logic circuit to implement the method according to any one of claims 1 to 21.
A computer program product comprising instructions, characterized in that when the instructions are executed by a computing device cluster, the computing device cluster executes the method according to any one of claims 1 to 21.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, the method according to any one of claims 1 to 21 is implemented.