Communication method and apparatus

Abstract

A communication method and apparatus. The method comprises: receiving first information on a first resource, wherein the bandwidth of the first resource is less than or equal to a first bandwidth, and the first information is used for indicating a second bandwidth and / or a second resource; determining a second resource, wherein the second resource is used for transmitting a channel and / or a signal; and transmitting a channel and / or a signal on the second resource, wherein if the time interval between the second resource and the first resource is less than or equal to a first time, the bandwidth of the second resource is less than or equal to the first bandwidth, and / or if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth. By means of the technical solution provided in the present application, it can be ensured that data transmission is not interrupted during a bandwidth switching process, thereby reducing a transmission delay.

Description

A communication method and apparatus

[0001] This application claims priority from the Chinese patent application No. 202411109131.3 filed on August 12, 2024, and entitled "A communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0003] The peak rate of network transmission is closely related to bandwidth. The larger the bandwidth, the higher the peak rate of network transmission, and the smaller the bandwidth, the lower the peak rate of network transmission. In order to improve the peak rate, the carrier aggregation (CA) technology is introduced, that is, multiple component carriers (CCs) are aggregated, so that the terminal can enjoy the sum of the bandwidths of the multiple component carriers.

[0004] Since some communication systems need to support a larger carrier bandwidth, but receiving the entire carrier bandwidth signal by the terminal will bring a large power consumption, a bandwidth part (BWP) is defined. The BWP refers to a continuous spectrum resource configured by the network side to the terminal, that is, a group of continuous resource blocks starting from a certain position of the common resource block, thereby realizing flexible transmission bandwidth configuration of the network side and the terminal side.

[0005] When there is a high-rate data transmission requirement, the terminal needs to switch from a BWP with a smaller bandwidth to a BWP with a larger bandwidth. However, there is a delay in bandwidth switching, and during the bandwidth switching process, the terminal cannot transmit data, thereby causing data transmission interruption and resulting in additional transmission delay. SUMMARY

[0006] Embodiments of the present application provide a communication method and apparatus, which can ensure uninterrupted data transmission and reduce transmission delay during bandwidth switching.

[0007] In a first aspect, embodiments of the present application provide a communication method, which can be applied to a first communication apparatus, and the method comprises:

[0008] receiving first information on a first resource, the bandwidth of the first resource being less than or equal to a first bandwidth, the first information being used to indicate a second bandwidth and / or a second resource;

[0009] determining the second resource, the second resource being used to transmit a channel and / or a signal;

[0010] transmitting the channel and / or the signal on the second resource;

[0011] if the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is less than or equal to the first bandwidth; and / or,

[0012] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth.

[0013] The first information can also be understood as being used to indicate bandwidth switching, i.e., being used to indicate switching from the first bandwidth to the second bandwidth. Accordingly, the first bandwidth can be understood as being the bandwidth before switching (or original bandwidth), and the second bandwidth can be understood as being the bandwidth after switching (or new bandwidth). Alternatively, the second bandwidth can be greater than the first bandwidth, or the second bandwidth can also be less than the first bandwidth.

[0014] The first time refers to bandwidth switching time (or bandwidth switching delay), i.e., the time required for switching from the first bandwidth to the second bandwidth, i.e., the interval between the switching start time and the switching completion time.

[0015] The time of the first resource can be regarded as the switching start time. If the time interval between the second resource and the first resource is less than the first time, it means that the time of the second resource is earlier than the switching completion time, i.e., the time of the second resource is within the bandwidth switching delay, at this time, the bandwidth switching has not been completed, therefore, the bandwidth of the second resource is less than or equal to the first bandwidth, i.e., the first communication device can continue to transmit data on the original bandwidth.

[0016] If the time interval between the second resource and the first resource is greater than the first time, it means that the time of the second resource is later than the switching completion time, i.e., the time of the second resource is outside the bandwidth switching delay, at this time, the bandwidth switching has been completed, therefore, the bandwidth of the second resource is less than or equal to the second bandwidth, i.e., the first communication device can transmit data on the new bandwidth.

[0017] Through the above embodiment, when the bandwidth switching delay is generated due to bandwidth switching, within the bandwidth switching delay, data can be transmitted on the original bandwidth, and outside the bandwidth switching delay, data can be transmitted on the new bandwidth, so that uninterrupted transmission of data can be ensured, and transmission delay can be reduced.

[0018] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, and determining the second resource comprises:

[0019] The first information is used to indicate the second bandwidth and the second resource, and the second resource is determined according to the first information; or,

[0020] The first information is used to indicate a second bandwidth, and the second information is used to indicate a second resource, and the second resource is determined according to the second information.

[0021] According to the above embodiment, the first information is used to indicate the second bandwidth and the second resource, that is, the second bandwidth and the second resource are indicated by the same information, so that the signaling overhead can be saved. Alternatively, the first information is used to indicate the second bandwidth, and the second information is used to indicate the second resource, that is, the second bandwidth and the second resource are indicated by different information respectively, so that the indication of the second resource is more flexible.

[0022] In a possible implementation, the second resource is used to transmit a channel and / or a signal, including that the second resource is used to transmit a reference signal.

[0023] If the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or,

[0024] If the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth.

[0025] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including that the first information is used to indicate the second resource.

[0026] If the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth.

[0027] According to the above embodiment, the time of the first resource can be regarded as the switching start time, the time interval between the second resource and the first resource is greater than the first time, which indicates that the time of the second resource is later than the switching completion time, that is, the time of the second resource is outside the bandwidth switching delay, at this time, the bandwidth switching has been completed, therefore, the bandwidth of the second resource can be greater than the first bandwidth, that is, the first communication device can switch to a larger bandwidth to transmit data.

[0028] In a possible implementation, the first time satisfies one or more of the following conditions:

[0029] The first value of the first time is greater than the second value of the first time.

[0030] The first value of the first time is greater than 0.

[0031] The second value of the first time is equal to 0.

[0032] The first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth.

[0033] According to the above embodiment, the value of the first time (i.e., the bandwidth switching delay) can be determined according to the size relationship between the second bandwidth and the first bandwidth, so that the first communication device can transmit data on the original bandwidth within the bandwidth switching delay, and transmit data on the new bandwidth outside the bandwidth switching delay, thereby ensuring uninterrupted data transmission and reducing transmission delay.

[0034] In a possible implementation, when the first information is used to indicate the second bandwidth, the first information is used to indicate one or more of the following information: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, a subcarrier type, or a bandwidth switching.

[0035] In a possible implementation, the method further includes:

[0036] receiving first configuration information, and determining the first bandwidth according to the first configuration information, the first configuration information including one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, or a subcarrier type; and / or,

[0037] determining the first bandwidth according to predefined information.

[0038] According to the above embodiment, the first bandwidth can be pre-configured or predefined, so that the first communication device can determine the first bandwidth according to the pre-configuration information or the predefined information.

[0039] In a possible implementation, the method further includes:

[0040] receiving second configuration information, the second configuration information including one or more of the following information used to indicate the candidate value set of the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers, or one or more subcarrier types;

[0041] determining the second bandwidth according to the second configuration information and the first information.

[0042] Through the above embodiments, the candidate value set of the second bandwidth can be preconfigured, so that the first communication device can determine the candidate value set of the second bandwidth according to the preconfigured information, and determine the second bandwidth in combination with the first information.

[0043] In a possible implementation, the method further includes:

[0044] When a time interval of the third resource from the first resource or the second resource is less than a first threshold, the third information is not allowed to be transmitted on the third resource, where the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth.

[0045] The third information can also be understood as being used to indicate a bandwidth switching (a next bandwidth switching after the bandwidth switching indicated by the first information), that is, being used to indicate a switching from the first bandwidth or the second bandwidth to the third bandwidth.

[0046] The first threshold refers to a minimum time interval of adjacent two bandwidth switchings. For example, when a time interval of a current bandwidth switching from a previous bandwidth switching is less than the first threshold, the current bandwidth switching is not allowed (or is not expected). For another example, when a time interval of a current bandwidth switching from a previous bandwidth switching is greater than or equal to the first threshold, the current bandwidth switching is allowed. Optionally, the first threshold can be predefined, or preconfigured by the second communication device, or reported by the first communication device.

[0047] The time interval of the third resource from the first resource or the second resource can also be understood as a time interval of a bandwidth switching (denoted as a current bandwidth switching) indicated by the third information from a bandwidth switching (denoted as a previous bandwidth switching) indicated by the first information. When the time interval of the third resource from the first resource or the second resource is less than the first threshold, the current bandwidth switching is not allowed, so that the second communication device is not allowed to send the third information on the third resource, and / or the first communication device does not expect to receive the third information on the third resource.

[0048] Through the above embodiments, the first threshold is introduced to represent a minimum time interval of adjacent two bandwidth switchings, when a time interval of a current bandwidth switching from a previous bandwidth switching is less than the first threshold, the bandwidth switching is not allowed to be performed again, so that frequent bandwidth switching can be avoided, which is beneficial to reduce implementation complexity and save power consumption.

[0049] In a possible implementation, the method further includes:

[0050] The capability report information is used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold.

[0051] In a second aspect, the embodiments of the present application provide a communication method, which can be applied to a second communication device, the method comprising:

[0052] transmitting first information on a first resource, a bandwidth of the first resource being less than or equal to a first bandwidth, the first information being used for indicating a second bandwidth and / or a second resource, the second resource being used for a transmission channel and / or a signal;

[0053] if a time interval between the second resource and the first resource is less than or equal to a first time, a bandwidth of the second resource is less than or equal to the first bandwidth; and / or,

[0054] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth.

[0055] In a possible implementation, the first information is used for indicating the second bandwidth and / or the second resource, comprising: the first information is used for indicating the second bandwidth; the method further comprises:

[0056] transmitting second information, the second information being used for indicating the second resource.

[0057] In a possible implementation, the second resource is used for the transmission channel and / or the signal, comprising: the second resource is used for transmitting a reference signal;

[0058] when the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or,

[0059] when the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth.

[0060] In a possible implementation, the first information is used for indicating the second bandwidth and / or the second resource, comprising: the first information is used for indicating the second resource;

[0061] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth.

[0062] In a possible implementation, the first time satisfies one or more of the following:

[0063] a first value of the first time is greater than a second value of the first time;

[0064] the first value of the first time is greater than 0;

[0065] the second value of the first time is equal to 0;

[0066] wherein the first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth.

[0067] In a possible implementation, when the first information is used to indicate the second bandwidth, the first information is used to indicate one or more of the following information: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, a subcarrier type or a bandwidth switching.

[0068] In a possible implementation, the method further includes:

[0069] sending first configuration information, the first configuration information including one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a bandwidth number, a subcarrier number, a subcarrier number or a subcarrier type.

[0070] In a possible implementation, the method further includes:

[0071] sending second configuration information, the second configuration information including one or more of the following information used to indicate a candidate value set of the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers or one or more subcarrier types.

[0072] In a possible implementation, the method further includes:

[0073] when a time interval between a third resource and the first resource or the second resource is less than a first threshold, not allowing transmission of third information on the third resource, wherein the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth.

[0074] In a possible implementation, the method further includes:

[0075] receiving capability reporting information, the capability reporting information being used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time or the first threshold.

[0076] In a third aspect, an embodiment of the present application provides a communication apparatus, which includes a module or unit for performing the method in the first aspect or any possible implementation of the first aspect.

[0077] In a possible implementation, the apparatus includes:

[0078] a transceiving unit, configured to receive first information on a first resource, a bandwidth of the first resource being less than or equal to a first bandwidth, the first information being used to indicate a second bandwidth and / or a second resource;

[0079] a processing unit, configured to determine the second resource, the second resource being used to transmit a channel and / or a signal;

[0080] the transceiving unit is further configured to transmit the channel and / or the signal on the second resource;

[0081] if a time interval between the second resource and the first resource is less than or equal to a first time, a bandwidth of the second resource is less than or equal to the first bandwidth; and / or,

[0082] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to a second bandwidth.

[0083] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second bandwidth and the second resource; and the processing unit, in determining the second resource, is specifically configured to determine the second resource according to the first information.

[0084] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second bandwidth; the transceiving unit is further configured to receive second information; and the processing unit, in determining the second resource, is specifically configured to determine the second resource according to the second information.

[0085] In a possible implementation, the second resource is used to transmit the channel and / or the signal, including: the second resource is used to transmit a reference signal.

[0086] if the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or,

[0087] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth.

[0088] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second resource.

[0089] If the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth.

[0090] In a possible implementation, the first time satisfies one or more of the following:

[0091] The first value of the first time is greater than a second value of the first time.

[0092] The first value of the first time is greater than 0.

[0093] The second value of the first time is equal to 0.

[0094] The first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth.

[0095] In a possible implementation, when the first information is used to indicate a second bandwidth, the first information is used to indicate one or more of the following information:

[0096] A bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, a subcarrier type, or a bandwidth switching.

[0097] In a possible implementation, the transceiver is further configured to receive first configuration information, and the processor is further configured to determine the first bandwidth according to the first configuration information, the first configuration information including one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, or a subcarrier type; and / or,

[0098] The processor is further configured to determine the first bandwidth according to predefined information.

[0099] In a possible implementation, the transceiver is further configured to receive second configuration information, the second configuration information including one or more of the following information used to indicate a candidate value set of the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers, or one or more subcarrier types.

[0100] The processor is further configured to determine the second bandwidth according to the second configuration information and the first information.

[0101] In a possible implementation, when a time interval between the third resource and the first resource or the second resource is less than a first threshold, the transceiver is configured to not allow transmission of third information on the third resource, wherein the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth.

[0102] In a possible implementation, the transceiver is further configured to send capability reporting information, and the capability reporting information is used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold.

[0103] In a fourth aspect, an embodiment of the present application provides a communication apparatus, which comprises a module or unit for performing the method in the second aspect or any possible implementation of the second aspect.

[0104] In a possible implementation, the apparatus comprises:

[0105] a transceiver configured to send first information on a first resource, wherein a bandwidth of the first resource is less than or equal to a first bandwidth, and the first information is used to indicate a second bandwidth and / or the second resource, and the second resource is used for transmission of a channel and / or a signal;

[0106] if a time interval between the second resource and the first resource is less than or equal to a first time, a bandwidth of the second resource is less than or equal to the first bandwidth; and / or,

[0107] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth.

[0108] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, comprising: the first information is used to indicate the second bandwidth; and the transceiver is further configured to send second information, and the second information is used to indicate the second resource.

[0109] In a possible implementation, the second resource is used for transmission of a channel and / or a signal, comprising: the second resource is used for transmission of a reference signal.

[0110] if the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or,

[0111] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth.

[0112] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second resource.

[0113] If a time interval between the second resource and the first resource is greater than the first time, a bandwidth of the second resource is greater than the first bandwidth.

[0114] In a possible implementation, the first time satisfies one or more of the following:

[0115] A first value of the first time is greater than a second value of the first time.

[0116] The first value of the first time is greater than 0.

[0117] The second value of the first time is equal to 0.

[0118] The first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth.

[0119] In a possible implementation, when the first information is used to indicate the second bandwidth, the first information is used to indicate one or more of the following information:

[0120] A bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, a subcarrier type, or a bandwidth switching.

[0121] In a possible implementation, the transceiver is further configured to send first configuration information, and the first configuration information includes one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a bandwidth number, a subcarrier number, a subcarrier number, or a subcarrier type.

[0122] In a possible implementation, the transceiver is further configured to send second configuration information, and the second configuration information includes one or more of the following information used to indicate a candidate value set of the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers, or one or more subcarrier types.

[0123] In a possible implementation, when a time interval between the third resource and the first resource or the second resource is less than a first threshold, the transceiver is not allowed to transmit third information on the third resource, where the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth.

[0124] In a possible implementation, the transceiver is further configured to receive capability reporting information, where the capability reporting information is used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold.

[0125] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which comprises a processor configured to execute a computer program or instructions, and when the processor executes the computer program or instructions, the method in any one of the first aspect to the second aspect or any possible implementation is implemented. Optionally, the communication apparatus further comprises a memory. Optionally, the communication apparatus further comprises a communication interface, and the processor is coupled with the communication interface.

[0126] In a sixth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program or instructions, and when the computer program or instructions are executed, the method in any one of the first aspect to the second aspect or any possible implementation is implemented.

[0127] In a seventh aspect, an embodiment of the present application provides a computer program product, which comprises a computer program or instructions, and when the computer program or instructions are executed, the method in any one of the first aspect to the second aspect or any possible implementation is implemented.

[0128] In an eighth aspect, an embodiment of the present application provides a chip, which comprises a processor configured to execute a computer program or instructions, and when the processor executes the computer program or instructions, the method in any one of the first aspect to the second aspect or any possible implementation is implemented. Optionally, the chip further comprises a communication interface configured to receive a signal or transmit a signal.

[0129] In a ninth aspect, an embodiment of the present application provides a chip, which comprises a logic circuit and an input / output interface, the logic circuit is configured to be coupled with the input / output interface, and the input / output interface is configured to transmit data to execute the method in any one of the first aspect to the second aspect or any possible implementation.

[0130] In a tenth aspect, an embodiment of the present application provides a communication system, which comprises the communication apparatus according to the third aspect or any possible implementation of the third aspect, and / or the communication apparatus according to the fourth aspect or any possible implementation of the fourth aspect.

[0131] In an eleventh aspect, an embodiment of the present application provides a communication system, which comprises a first communication apparatus and a second communication apparatus, wherein the first communication apparatus is configured to perform the method according to the first aspect or any possible implementation of the first aspect, and the second communication apparatus is configured to perform the method according to the second aspect or any possible implementation of the second aspect.

[0132] The beneficial effects brought by the second aspect to the eleventh aspect can refer to the description of the beneficial effects of the first aspect, which will not be repeated here.

[0133] In addition, in the process of performing the method according to any of the first aspect to the second aspect and any possible implementation, the process of sending information and / or receiving information in the above-mentioned method can be understood as the process of outputting information by the processor, and / or the process of receiving input information by the processor. When outputting information, the processor can output the information to the transceiver (or communication interface or sending module) so as to be transmitted by the transceiver. After being output by the processor, the information can also need to be processed further before reaching the transceiver. Similarly, when the processor receives input information, the transceiver (or communication interface or sending module) receives the information and inputs it into the processor. Furthermore, after the transceiver receives the information, the information can need to be processed further before being input into the processor.

[0134] Based on the above principle, for example, the sending information mentioned in the foregoing method can be understood as the processor outputting information. For another example, the receiving information can be understood as the processor receiving input information.

[0135] Optionally, for the transmission, sending and receiving operations of the processor, if there is no special description, or if it does not contradict the actual role or inherent logic in the related description, it can be more generally understood as the processor outputting and receiving, inputting and the like.

[0136] Optionally, in the process of executing the method in any one of the first aspect to the second aspect and any possible implementation manner, the processor can be a processor specially used for executing the method, or a processor executing the method by executing computer instructions in a memory, such as a general-purpose processor. The memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated on the same chip as the processor, or separately arranged on different chips. The type of the memory and the arrangement manner of the memory and the processor are not limited in the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0137] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application.

[0138] FIG. 1 is a schematic diagram of carrier aggregation;

[0139] FIG. 2 is a schematic diagram of BWP;

[0140] FIG. 3 is a schematic diagram of BWP switching;

[0141] FIG. 4 is a schematic diagram of a network architecture provided by the embodiments of the present application;

[0142] FIG. 5 is a schematic diagram of a flow of a communication method provided by the embodiments of the present application;

[0143] FIG. 6 is a schematic diagram of a flow of another communication method provided by the embodiments of the present application;

[0144] FIG. 7 is a schematic diagram of a flow of still another communication method provided by the embodiments of the present application;

[0145] FIG. 8 is a schematic diagram of resources indicated by first information in the embodiments of the present application;

[0146] FIG. 9 is a schematic diagram of a structure of a communication apparatus provided by the embodiments of the present application;

[0147] FIG. 10 is a schematic diagram of a structure of another communication apparatus provided by the embodiments of the present application;

[0148] FIG. 11 is a schematic diagram of a structure of still another communication apparatus provided by the embodiments of the present application;

[0149] FIG. 12 is a schematic diagram of a structure of a chip provided by the embodiments of the present application. DETAILED DESCRIPTION

[0150] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will describe the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0151] In this application, the word "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word exemplary is intended to present concepts in a concrete manner. In the description of embodiments of the application, reference is made to "an embodiment" or "one embodiment". Such references mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearance of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to a common or all embodiments.

[0152] In the embodiments of the present application, "first", "second", etc. do not limit the quantity and execution sequence, and "first", "second", etc. do not necessarily mean different. In addition, the terms "comprise", "contain" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device, etc. containing a series of steps or units is not limited to the listed steps or units, but can optionally also include steps or units not listed, etc., or can optionally also include other steps or units inherent to these processes, methods, products or devices, etc.

[0153] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily referring to a common or all embodiments. It is explicitly and implicitly understood by those skilled in the art that, unless otherwise specified, terms and / or descriptions used in various embodiments of the application are consistent, and can be mutually referred to, and technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0154] It should be understood that in this application, "at least one" means one or more, and "multiple" means two or more. "And / or" is used to describe the relationship between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that there are three cases: only A, only B, and A and B at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0155] In the description of the present application, "indication" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by certain information is referred to as to-be-indicated information, and there are many ways to indicate the to-be-indicated information in the specific implementation process. For example, the to-be-indicated information can be directly indicated, such as indicating the to-be-indicated information itself or an index of the to-be-indicated information, and the like. For another example, the to-be-indicated information can also be indirectly indicated by indicating other information, and there is an association relationship between the indicated other information and the to-be-indicated information. For another example, only a part of the to-be-indicated information can be indicated, and the other part of the to-be-indicated information is known or agreed in advance. In addition, the indication of a specific information can also be implemented by means of the arrangement order of each information agreed in advance (such as a protocol), thereby reducing the indication overhead to a certain extent.

[0156] For ease of understanding, the following first introduces technical terms and related technical knowledge that may be involved in the embodiments of the present application. The terms used in the implementation part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0157] 1、Carrier aggregation (CA)

[0158] The peak rate (or maximum rate) of network transmission is closely related to the bandwidth. The larger the bandwidth, the higher the peak rate of network transmission, and the smaller the bandwidth, the lower the peak rate of network transmission. Some communication systems, such as new radio (NR) systems, can have a cell bandwidth of up to 100 MHz in low frequency bands and a cell bandwidth of up to 400 MHz in high frequency bands, but such bandwidths cannot meet the peak rate requirements of the 5th generation (5G) system. In order to improve the peak rate, the carrier aggregation (CA) technology is introduced, that is, multiple component carriers (CCs) are aggregated, so that the bandwidth that can be enjoyed by a user equipment (UE) is the sum of the bandwidths of the multiple component carriers, and the bandwidth of each component carrier can be configured by a higher layer parameter.

[0159] Please refer to FIG. 1, which is a schematic diagram of carrier aggregation. As shown in FIG. 1, in a carrier aggregation scenario, there are Cell 1, Cell 2 and Cell 3, wherein Cell 1 is a primary cell (PCell), and Cell 2 and Cell 3 are secondary cells (SCells). A base station configures a primary carrier (PCC) and two secondary carriers (SCCs) through radio resource control (RRC) information, and the two SCCs are denoted as SCC1 and SCC2. The carrier frequencies of the PCC, SCC1 and SCC2 are denoted as F1, F2 and F3, respectively. The SCC is used to supplement the bandwidth of the PCC and help the PCC transmit and receive data. The functions and scheduling modes of the PCC and the SCC are different. For example, the base station can configure, activate / deactivate, change and delete the SCC. Since the UE and the SCC need to interact with control messages when the SCC is activated, the power consumption of the UE will be consumed. Therefore, when the data traffic of the UE is small and the PCC can meet the demand, the SCC will be deactivated. For another example, only the PCell is configured with a physical uplink control channel (PUCCH). The PCC and the SCC need to comply with the downlink protocol architecture of CA. The protocol layer of the CC aggregated on the wireless interface is mainly in the medium access control (MAC) layer.

[0160] 2. Bandwidth part (BWP)

[0161] Since some communication systems (for example, an NR system) need to support a large carrier bandwidth (for example, 100 MHz), but the terminal receiving the entire carrier bandwidth signal will bring large power consumption, a bandwidth part (BWP) is defined. The BWP refers to a continuous spectrum resource configured by the network side to the UE, that is, a group of continuous resource blocks starting from a certain position of the common resource block, so as to realize flexible transmission bandwidth configuration of the network side and the UE side. One BWP can contain 1-275 resource blocks.

[0162] Please refer to FIG. 2, which is a schematic diagram of a BWP. As shown in FIG. 2, at a first time, the UE has a large amount of traffic, and the base station can configure a large bandwidth (BWP1) for the UE, for example, a bandwidth of 40 MHz and a subcarrier spacing of 15 kHz. At a second time, the UE has a small amount of traffic, and the base station can configure a small bandwidth (BWP2) for the UE, for example, a bandwidth of 10 MHz and a subcarrier spacing of 15 kHz, which can meet the basic communication requirements. At a third time, when there is a large range of frequency selective fading in the bandwidth of BWP1, or the resources in the frequency range of BWP1 are relatively scarce, the base station can configure a new bandwidth (BWP3) for the UE, for example, a bandwidth of 20 MHz and a subcarrier spacing of 60 kHz.

[0163] 3. BWP aggregation (BA)

[0164] In a possible design, one BWP corresponds to one chip implementation module. In this design, the granularity of a BWP can be large, for example, the bandwidth candidate values of one BWP can be {20 MHz, 50 MHz, 100 MHz}. The base station informs the UE of the bandwidth and the number of BWP scheduled by the base station, thereby indicating the chip implementation modules that need to be turned on by the UE. The chip implementation module described herein is a hardware subsystem, and different chip implementation modules work independently. That is, the UE can turn on one chip implementation module while transmitting and receiving data on another chip implementation module. In this implementation manner, one hardware subsystem can correspond to one BWP, or correspond to one sub-CC. Here, the BWP or the sub-CC is only an example and does not limit the present application. If one hardware subsystem corresponds to one BWP, and multiple BWP are activated at the same time, this can be referred to as BWP aggregation (BA).

[0165] Based on the above implementation manner, when the required transmission bandwidth is small (for example, in a low-rate data transmission scenario), the base station can only schedule / activate one BWP. When the required transmission bandwidth is large (for example, in a high-rate data transmission scenario), the base station can schedule / activate multiple BWP. Since the chip implementation modules work independently, when only one BWP is activated, only the chip implementation module corresponding to the BWP is in working mode, and other chip implementation modules are in sleep mode, thereby achieving the effect of energy saving.

[0166] 4. Physical downlink control channel (PDCCH) blind detection

[0167] In some communication systems (e.g., NR systems), downlink control information (DCI) is carried by a physical downlink control channel (PDCCH).

[0168] Since the PDCCH can carry a variety of different DCI formats, and the DCI format of a transmission is unknown to the UE, the UE needs to blindly detect the DCI format. The UE determines the possible time-frequency resource size and location of the PDCCH through a control resource set (CORESET), which is a time and frequency resource on which the UE attempts to decode possible PDCCHs using one or more search spaces (SSs). It should be understood that the physical resources of the PDCCH are shared resources, and the size and location of the CORESET are semi-statically configured by the network. For a certain UE, it is possible to detect the DCI of the UE on the CORESET, and it is also possible to detect that there is no DCI of the UE.

[0169] In order to enable the UE to detect the DCI more quickly in these possible locations, a set of candidate PDCCHs (PDCCH candidates) is predefined in the CORESET through various aggregation levels. An SS is a set of candidate control channels with the same aggregation level.

[0170] In actual applications, since the arrival time of data packets is uncertain, and the base station needs to consider the arrangement and scheduling of multiple UEs, in order to achieve maximum scheduling flexibility, from the time domain perspective, the base station usually configures the UE to monitor the PDCCH in each time slot, i.e., the PDCCH detection period is one time slot, and from the frequency domain perspective, the base station usually configures the frequency domain range of the CORESET of the UE to be the entire BWP. In actual applications, for a certain UE, in most cases, there is no frequent traffic scheduling, resulting in a large number of invalid PDCCH detections of the terminal. Frequent PDCCH blind detection and PDCCH blind detection on a large bandwidth will cause waste of terminal power consumption.

[0171] 5. BWP switching

[0172] For the access state of the UE, the BWP of the UE can be divided into an initial BWP and a dedicated BWP, the initial BWP is used to initiate random access, and the dedicated BWP is used for data service transmission. One UE can be configured with four different dedicated BWPs, and at any specific moment in the RRC connected state, the UE can only be activated one configured dedicated downlink BWP and can only be activated one configured dedicated uplink BWP. The base station can activate or deactivate the BWP through the DCI, so as to switch between different BWPs.

[0173] Please refer to FIG. 3, which is a BWP switching schematic diagram. As shown in FIG. 3, two BWPs are shown in the carrier bandwidth, which are respectively denoted as BWP1 and BWP2, and BWP1 is greater than BWP2. When the UE traffic is small, the UE can switch to a smaller bandwidth (BWP2) to run to reduce power consumption. When the UE traffic is large, the UE can switch to a large bandwidth (BWP1) to run to ensure the transmission rate. However, there is a delay in BWP switching. For example, in the NR system, the BWP switching delay is shown in Table 1 as follows.

[0174] Table 1

[0175] Wherein, μ represents a parameter, and how many slots in each subframe in the NR system depends on the parameter μ. NR Slot length represents the length of a slot in the NR system. BWP switchdelayT represents the BWP switching delay. Type 1 represents Type 1. Type 2 represents Type 2. Type 1 and Type 2 can be determined according to the UE capability.

[0176] For example, when μ is 0, there is 1 slot in each subframe in the NR system, the NR Slot length is 1ms, and the BWP switchdelayT can be 1 slot (corresponding to Type 1) or 3 slots (corresponding to Type 2). When μ is 1, there are 2 slots in each subframe in the NR system, the NR Slot length is 0.5ms, and the BWP switchdelayT can be 2 slots (corresponding to Type 1) or 5 slots (corresponding to Type 2). When μ is 2, there are 4 slots in each subframe in the NR system, the NR Slot length is 0.25ms, and the BWP switchdelayT can be 3 slots (corresponding to Type 1) or 9 slots (corresponding to Type 2). When μ is 1, there are 8 slots in each subframe in the NR system, the NR Slot length is 0.125ms, and the BWP switchdelayT can be 6 slots (corresponding to Type 1) or 18 slots (corresponding to Type 2).

[0177] At present, in order to ensure the flexibility of scheduling, the base station generally activates a BWP with a larger bandwidth for the UE, at this time, the frequency domain range of PDCCH blind detection is larger, thereby causing the terminal power consumption to be larger. If a BWP with a smaller bandwidth is activated in order to reduce the frequency domain range of PDCCH blind detection, when there is a high-rate data transmission requirement, the UE needs to switch to a BWP with a larger bandwidth, however, the terminal cannot transmit data in the BWP switching process, thereby causing data transmission interruption, resulting in additional transmission delay.

[0178] Based on this, the embodiments of the present application provide a communication method and device, which can ensure uninterrupted data transmission and reduce transmission delay in the bandwidth switching process.

[0179] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a global system for mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunications system (UMTS) system, an enhanced data rate for GSM evolution (EDGE) system, a worldwide interoperability for microwave access (WiMAX) system. The technical solutions of the embodiments of the present application can also be applied to other communication systems, for example, a public land mobile network (PLMN) system, a long term evolution advanced (LTE-A) system, a 5th generation (5G) system, a new radio (NR) system, a machine to machine (M2M) system, or a future evolved other communication system (for example, a 6th generation (6G) system), and the like, and the embodiments of the present application are not limited thereto.

[0180] The communication system of the embodiments of the present application at least includes two entities, one of which can send information to the other, and the other can receive the information. For example, the communication system of the embodiments of the present application includes a sending end and a receiving end, and the information between the sending end and the receiving end can be transmitted through radio waves, or can be transmitted through transmission media such as visible light, laser, infrared, optical fiber, etc.

[0181] In a possible example, the sending end can be a network device, and the receiving end can be a terminal device. In another possible example, the sending end can be a terminal device, and the receiving end can be a network device. In yet another possible example, the sending end can be a terminal device, and the receiving end can be another terminal device.

[0182] Referring to FIG. 4, FIG. 4 is a schematic diagram of a network architecture provided in an embodiment of the present application. As shown in FIG. 4, the network architecture includes a first communication apparatus 401 and a second communication apparatus 402 connected to each other in communication.

[0183] In a possible embodiment, the first communication apparatus 401 can be a terminal device, or an apparatus (for example, a chip, or a chip system, or a circuit) in the terminal device. The second communication apparatus 402 can be a network device, or an apparatus (for example, a chip, or a chip system, or a circuit) in the network device.

[0184] In another possible embodiment, the first communication apparatus 401 can be a terminal device (for the sake of distinction, referred to as a first terminal device), or an apparatus (for example, a chip, or a chip system, or a circuit) in the first terminal device. The second communication apparatus 402 can be another terminal device (for the sake of distinction, referred to as a second terminal device), or an apparatus (for example, a chip, or a chip system, or a circuit) in the second terminal device.

[0185] The network device in the embodiments of the present application can include, but is not limited to, a base station (or node B (NB)), a next generation base station (gNB), an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home evolved node B (HeNB) or a home node B (HNB), a baseband unit (BBU), a server, a wearable device, a vehicle-mounted device, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc., and can also be a gNB, a TRP or a TP in a 5G such as a new radio (NR) system, one or a group of antenna panels of a base station in a 5G system, or a network node such as a baseband unit or a distributed unit (DU) constituting a gNB or a TP. The base station can be a macro base station, a micro base station, a pico base station, a small station, a relay station or a balloon station, etc.

[0186] In some deployments, a gNB can include a centralized unit (CU) and a DU. The gNB can also include an active antenna unit (AAU). The CU implements part of the functions of the gNB, and the DU implements part of the functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, implementing the radio resource control (RRC), and the functions of the packet data convergence protocol (PDCP) layer. The DU is responsible for processing the physical layer protocol and real-time services, implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing, and related functions of the active antenna. The information of the RRC layer is generated by the CU and eventually becomes the PHY layer information through the encapsulation of the PHY layer of the DU, or is converted from the information of the PHY layer. Thus, under this architecture, high-layer signaling such as RRC layer signaling can also be considered as being sent by the DU or by the DU+AAU. It can be understood that the network device can be a device including one or more of the CU node, the DU node, and the AAU node. In addition, the CU can be divided into a network device in the radio access network (RAN) or a network device in the core network (CN), and the embodiments of the present application do not limit the CU.

[0187] The terminal device in the embodiments of the present application is a device with wireless communication function, which can also be referred to as a terminal, a terminal device, an access terminal, a subscriber unit, a user equipment (UE), a user station, a mobile station (MS), a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or a user device. For example, the terminal device in the embodiments of the present application can be a mobile phone, a pad, a computer with wireless transceiver function, a train, an airplane, a mobile internet device (MID), a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control (such as a robot, etc.), a wireless terminal in Internet of Vehicles (such as a vehicle-mounted device, a whole vehicle device, a vehicle-mounted module, a vehicle, etc.), a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a machine type communication (MTC) terminal, a cellular phone, a smart phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless data card, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, etc.

[0188] It should be understood that the network architecture shown in FIG. 4 is only an example, and the network architecture applicable to the embodiments of the present application is not limited thereto, and any network architecture capable of realizing the functions of the above-mentioned devices in part or in whole is applicable to the embodiments of the present application.

[0189] The communication method provided by the embodiments of the present application is described below.

[0190] Please refer to FIG. 5, which is a flow diagram of a communication method according to an embodiment of the present application. The embodiment shown in FIG. 5 takes the first communication device and the second communication device as the execution subject of the interaction to illustrate the method. For example, the first communication device can be the first communication device 401 in FIG. 4, and the second communication device can be the second communication device 402 in FIG. 4.

[0191] As shown in FIG. 5, the communication method can include, but is not limited to, the following steps S501-S503.

[0192] S501, the second communication device sends first information to the first communication device on a first resource, and correspondingly, the first communication device receives the first information sent by the second communication device on the first resource. The bandwidth of the first resource is less than or equal to the first bandwidth. The first information is used to indicate the second bandwidth and the second resource.

[0193] The first information can also be understood as indicating bandwidth switching, i.e., indicating switching from the first bandwidth to the second bandwidth. Correspondingly, the first bandwidth can be understood as the bandwidth before switching (or the original bandwidth), and the second bandwidth can be understood as the bandwidth after switching (or the new bandwidth).

[0194] Optionally, the second bandwidth can be greater than the first bandwidth. Alternatively, the second bandwidth can also be less than the first bandwidth.

[0195] Specifically, the first resource refers to the physical resource used by the first communication device to receive the first information, which can include time domain resources and / or frequency domain resources. The bandwidth of the first resource refers to the frequency range of the first resource. For example, the bandwidth of the first resource can be indicated by the frequency domain resource of the first resource, or by the time domain resource of the first resource. Alternatively, the bandwidth of the first resource refers to the bandwidth of receiving the first information. For example, the first information is DCI, and the bandwidth of the first resource refers to the bandwidth of PDCCH blind detection. Alternatively, the first information is DCI, and the bandwidth of the first resource refers to the bandwidth contained in the CORESET. The first bandwidth can also be understood as the maximum bandwidth of the first resource.

[0196] For example, the first bandwidth can be used for one or more of the following: random access, control signaling transmission, data transmission, or channel measurement. The first bandwidth being used for control signaling transmission means that the first bandwidth is the maximum bandwidth for control signaling transmission, or the first bandwidth is the maximum bandwidth of CORESET. For example, the control signaling can be uplink control signaling, e.g., uplink control information (UCI), or the control signaling can be downlink control signaling, e.g., downlink control information (DCI). The first bandwidth being used for data transmission means that the first bandwidth is the maximum bandwidth for data transmission. For example, the data transmission can include uplink data transmission and / or downlink data transmission. The first bandwidth being used for channel measurement means that the first bandwidth is the bandwidth for measurement signal transmission, or the first bandwidth is the maximum bandwidth for measurement signal transmission. For example, the measurement signal can include one or more of the following: channel state information reference signal (CSI-RS), tracking reference signal (TRS), phase-tracking reference signals (PTRS), sounding reference signal (SRS), demodulation reference signal (DMRS), synchronization signal block (SSB), or channel state information Interference Measurement (CSI-IM).

[0197] In a possible implementation, the first bandwidth can be predefined, e.g., a bandwidth value of the first bandwidth can be defined as a default value. In this way, the first communication device and the second communication device can determine the first bandwidth according to the predefined information. For example, the first bandwidth is X MHz or X resource units, X being a positive integer. X can be 20, 40, 50, 100, 200, or 400, for example. Optionally, the resource unit can be any of the following: resource element (RE), resource block (RB), BWP, resource block group (RBG), CC.

[0198] In another possible implementation, the first bandwidth is configured by the second communication device. Specifically, the second communication device sends first configuration information to the first communication device, and the first communication device receives the first configuration information from the second communication device, where the first configuration information is used to indicate the first bandwidth. In this way, the first communication device can determine the first bandwidth according to the first configuration information.

[0199] For example, the first configuration information can include one or more of the following information: a bandwidth value, a number of resource units, a bandwidth number, a bandwidth type, a bandwidth aggregation level, a subcarrier number, a number of subcarriers, or a subcarrier type. The bandwidth number can be a BWP number, the bandwidth type can be a BWP type, and the bandwidth aggregation level can be a BWP aggregation level. The above information can be used to indicate a bandwidth (i.e., the first bandwidth), so that the first communication device can determine the first bandwidth according to the first configuration information.

[0200] For example, the first configuration information indicates that the first bandwidth is X MHz, where X is a positive integer. X is configured, for example, and the candidate value of X can be one or more of the following: 20, 40, 50, 100, 200, or 400. The resource unit can be any of the following: RE, RB, BWP, RBG, or CC. The first configuration information indicates that the first bandwidth is Y resource units, where Y is a positive integer. For example, Y = 20, or Y = 40, or Y = 50, or Y = 100.

[0201] For another example, the first configuration information indicates that the first bandwidth is a bandwidth corresponding to a configured bandwidth number. Each bandwidth number can correspond to a pre-defined or pre-configured bandwidth. For example, the candidate value of the bandwidth number is 1 and 2, the bandwidth corresponding to the bandwidth number 1 is 50 MHz, and the bandwidth corresponding to the bandwidth number 2 is 100 MHz. Accordingly, when the bandwidth number configured in the first configuration information is 1, the first configuration information indicates that the first bandwidth is 50 MHz. When the bandwidth number configured in the first configuration information is 2, the first configuration information indicates that the first bandwidth is 100 MHz.

[0202] For another example, the first configuration information indicates that the first bandwidth is a bandwidth corresponding to a configured bandwidth type. Each bandwidth type can correspond to a pre-defined or pre-configured bandwidth. For example, the candidate of the bandwidth type is a first bandwidth type and a second bandwidth type, the bandwidth corresponding to the first bandwidth type is 50 MHz, and the bandwidth corresponding to the second bandwidth type is 100 MHz. Accordingly, when the bandwidth type configured in the first configuration information is the first bandwidth type, the first configuration information indicates that the first bandwidth is 50 MHz. When the bandwidth type configured in the first configuration information is the second bandwidth type, the first configuration information indicates that the first bandwidth is 100 MHz.

[0203] For another example, the first configuration information indicates the first bandwidth as a bandwidth corresponding to a configured bandwidth aggregation level. Each bandwidth aggregation level can correspond to a pre-defined or pre-configured bandwidth. For example, the candidate values of the bandwidth aggregation level are 2 and 4, the bandwidth corresponding to the bandwidth aggregation level 2 is 50MHz, and the bandwidth corresponding to the bandwidth aggregation level 4 is 100MHz. Accordingly, when the bandwidth aggregation level configured in the first configuration information is 2, the first configuration information indicates the first bandwidth as 50MHz. When the bandwidth aggregation level configured in the first configuration information is 4, the first configuration information indicates the first bandwidth as 100MHz.

[0204] For another example, the first configuration information indicates the first bandwidth as a bandwidth corresponding to a configured subcarrier number. Each subcarrier number can correspond to a pre-defined or pre-configured bandwidth. For example, the candidate values of the subcarrier number are 1 and 2, the bandwidth corresponding to the subcarrier number 1 is 50MHz, and the bandwidth corresponding to the subcarrier number 2 is 100MHz. Accordingly, when the subcarrier number configured in the first configuration information is 1, the first configuration information indicates the first bandwidth as 50MHz. When the subcarrier number configured in the first configuration information is 2, the first configuration information indicates the first bandwidth as 100MHz.

[0205] For another example, the first configuration information indicates the first bandwidth as Z subcarriers, where Z is a positive integer, for example, Z = 100, or Z = 200, or Z = 273. Each subcarrier can correspond to a pre-defined or pre-configured bandwidth.

[0206] For another example, the first configuration information indicates the first bandwidth as a bandwidth corresponding to a configured subcarrier type. Each subcarrier type can correspond to a pre-defined or pre-configured bandwidth. For example, the candidate values of the subcarrier type are a first subcarrier type and a second subcarrier type, the bandwidth corresponding to the first subcarrier type is 50MHz, and the bandwidth corresponding to the second subcarrier type is 100MHz. Accordingly, when the subcarrier type configured in the first configuration information is the first subcarrier type, the first configuration information indicates the first bandwidth as 50MHz. When the subcarrier type configured in the first configuration information is the second subcarrier type, the first configuration information indicates the first bandwidth as 100MHz.

[0207] For example, when the second communication device is a network device and the first communication device is a terminal device, the first configuration information can be configured by the network device through high layer signaling (for example, RRC signaling).

[0208] Optionally, before the second communication device sends the first configuration information to the first communication device, the first communication device sends capability report information (denoted as first capability report information) to the second communication device. Correspondingly, the second communication device receives the first capability report information from the first communication device. The first capability report information is used to indicate one or more bandwidths that the first communication device can support. After receiving the first capability report information, the second communication device can determine the first bandwidth from the one or more bandwidths indicated by the first capability report information. After determining the first bandwidth, the second communication device sends the first configuration information to the first communication device, and correspondingly, the first communication device receives the first configuration information.

[0209] Optionally, the first configuration information can also be used to indicate a candidate value set of the first bandwidth, which can include multiple candidate values. For example, the first configuration information can include one or more of the following information: multiple bandwidth values, multiple resource block numbers, multiple bandwidth numbers, multiple bandwidth types, multiple bandwidth aggregation levels, multiple subcarrier numbers, multiple subcarrier numbers, or multiple subcarrier types. The above information can be used to indicate multiple bandwidths (i.e., multiple candidate values of the first bandwidth), so that the first communication device can determine multiple candidate values of the first bandwidth according to the first configuration information.

[0210] In this case, in addition to sending the first configuration information to the first communication device, the second communication device can also send first indication information to the first communication device, and correspondingly, the first communication device receives the first indication information from the second communication device, which is used to indicate the first bandwidth, for example, the first indication information can include a candidate value index of the first bandwidth. Therefore, the first communication device can determine the first bandwidth according to the first configuration information and the first indication information.

[0211] For example, assuming that the first configuration information is used to indicate two candidate values of the first bandwidth (e.g., the first candidate value and the second candidate value, whose indexes are 0 and 1, respectively), and the first indication information includes a candidate value index of the first bandwidth (e.g., the index is 0), then the first communication device can determine the bandwidth value of the first bandwidth as the first candidate value according to the candidate value index of the first bandwidth contained in the first indication information and the candidate values of the first bandwidth indicated by the first configuration information.

[0212] For example, taking the second communication device as a network device and the first communication device as a terminal device, the first indication information can be indicated by the network device through a MAC control element (CE) or DCI.

[0213] In yet another possible implementation, the first bandwidth can be reported by the first communication device. Specifically, the first communication device sends capability reporting information (denoted as second capability reporting information) to the second communication device, and accordingly, the second communication device receives the second capability reporting information from the first communication device, where the second capability reporting information is used to indicate the first bandwidth that can be supported by the first communication device. That is, the first bandwidth can be determined by the first communication device itself and reported to the second communication device.

[0214] For example, the second bandwidth can be used for one or more of the following: random access, control signaling transmission, data transmission, or channel measurement. When the second bandwidth is used for control signaling transmission, it means that the second bandwidth is the maximum bandwidth for control signaling transmission, or the second bandwidth is the maximum bandwidth of CORESET. For example, the control signaling can be UCI or DCI. When the second bandwidth is used for data transmission, it means that the second bandwidth is the maximum bandwidth for data transmission. For example, the data transmission can include uplink data transmission and / or downlink data transmission. When the second bandwidth is used for channel measurement, it means that the second bandwidth is the bandwidth for measurement signal transmission, or the second bandwidth is the maximum bandwidth for measurement signal transmission. For example, the measurement signal can include one or more of the following: CSI-RS, TRS, PTRS, SRS, DMRS, SSB, or CSI-IM.

[0215] Optionally, when the first information is used to indicate the second bandwidth, the first information can be used to indicate one or more of the following: a bandwidth value, a number of resource units, a bandwidth number, a bandwidth type, a bandwidth aggregation level, a subcarrier number, a number of subcarriers, a subcarrier type, or a bandwidth switching. The above information can be used to indicate the switched bandwidth (i.e., the second bandwidth), so that the first communication device can determine the second bandwidth according to the first information.

[0216] For example, the candidate values of the second bandwidth are a first bandwidth value and a second bandwidth value, and the first information indicates that the second bandwidth is the first bandwidth value. For another example, the candidates of the second bandwidth are BWP1 and BWP2, and the first information indicates that the second bandwidth is BWP1. Wherein, BWP1 and BWP2 are configured by a higher layer parameter. For example, BWP1 and BWP2 are configured by the second configuration information.

[0217] For another example, the first information indicates that the second bandwidth is Y resource units, where Y is a positive integer. For example, Y = 20, or Y = 40, or Y = 50, or Y = 100. Wherein, the resource unit can be any of the following: RE, RB, BWP, RBG, or CC.

[0218] For another example, the candidate of the second bandwidth includes a bandwidth corresponding to a first bandwidth number and a bandwidth corresponding to a second bandwidth number, and the first information indicates the first bandwidth number, i.e., indicates that the second bandwidth is the bandwidth corresponding to the first bandwidth number. The bandwidth corresponding to the first bandwidth number and the bandwidth corresponding to the second bandwidth number can be predefined or preconfigured.

[0219] For another example, the candidate of the second bandwidth includes a bandwidth corresponding to a first bandwidth type and a bandwidth corresponding to a second bandwidth type, and the first information indicates the first bandwidth type, i.e., indicates that the second bandwidth is the bandwidth corresponding to the first bandwidth type. The bandwidth corresponding to the first bandwidth type and the bandwidth corresponding to the second bandwidth type can be predefined or preconfigured.

[0220] For another example, the candidate of the second bandwidth includes a bandwidth corresponding to a first bandwidth aggregation level and a bandwidth corresponding to a second bandwidth aggregation level, and the first information indicates the first bandwidth aggregation level, i.e., indicates that the second bandwidth is the bandwidth corresponding to the first bandwidth aggregation level. The bandwidth corresponding to the first bandwidth aggregation level and the bandwidth corresponding to the second bandwidth aggregation level can be predefined or preconfigured.

[0221] For another example, the candidate of the second bandwidth includes a bandwidth corresponding to a first subcarrier number and a bandwidth corresponding to a second subcarrier number, and the first information indicates the first subcarrier number, i.e., indicates that the second bandwidth is the bandwidth corresponding to the first subcarrier number. The bandwidth corresponding to the first subcarrier number and the bandwidth corresponding to the second subcarrier number can be predefined or preconfigured.

[0222] For another example, the first information indicates that the second bandwidth is Z subcarriers, and Z is a positive integer. For example, Z=100, or Z=200, or Z=273. The bandwidth corresponding to each subcarrier can be predefined or preconfigured.

[0223] For another example, the candidate of the second bandwidth includes a bandwidth corresponding to a first subcarrier type and a bandwidth corresponding to a second subcarrier type, and the first information indicates the first subcarrier type, i.e., indicates that the second bandwidth is the bandwidth corresponding to the first subcarrier type. The bandwidth corresponding to the first subcarrier type and the bandwidth corresponding to the second subcarrier type can be predefined or preconfigured.

[0224] For another example, the candidate of the second bandwidth is a first bandwidth value, and the first information indicates bandwidth switching (from the first bandwidth to the second bandwidth), i.e., indicates that the second bandwidth is the first bandwidth value. The first bandwidth value can be predefined or preconfigured.

[0225] For another example, the example of the second bandwidth can refer to the example of the first bandwidth described above, which will not be described here.

[0226] For another example, taking the second communication device as a network device and the first communication device as a terminal device as an example, the first information can be DCI.

[0227] In a possible implementation, the second bandwidth can be predefined, for example, a bandwidth value of the second bandwidth can be defined as a default value. In this way, after the first communication device receives the first information for indicating switching from the first bandwidth to the second bandwidth, the second bandwidth can be determined according to the predefined information.

[0228] In another possible implementation, the second bandwidth can be configured by the second communication device. Specifically, the second communication device sends second configuration information to the first communication device, and accordingly, the first communication device receives the second configuration information from the second communication device, and the second configuration information is used to indicate the second bandwidth. In this way, after the first communication device receives the first information for indicating switching from the first bandwidth to the second bandwidth, the second bandwidth can be determined according to the second configuration information.

[0229] For example, the second configuration information can include one or more of the following information: a bandwidth value, a number of resource units, a bandwidth number, a bandwidth type, a bandwidth aggregation level, a subcarrier number, a number of subcarriers, or a subcarrier type. The above information can be used to indicate a bandwidth (i.e., the second bandwidth), so that after the first communication device receives the first information for indicating switching from the first bandwidth to the second bandwidth, the second bandwidth can be determined according to the second configuration information.

[0230] For example, taking the second communication device as a network device and the first communication device as a terminal device as an example, the second configuration information can be configured by the network device through high-layer signaling (for example, RRC signaling). Optionally, the second configuration information and the first configuration information can be configured through the same high-layer signaling, or can be configured through different high-layer signaling.

[0231] Optionally, before the second communication device sends the above-mentioned second configuration information to the first communication device, the first communication device sends capability reporting information (denoted as third capability reporting information) to the second communication device, and accordingly, the second communication device receives the third capability reporting information from the first communication device, and the third capability reporting information is used to indicate one or more bandwidths that can be supported by the first communication device. After the second communication device receives the third capability reporting information, the second bandwidth can be determined from the one or more bandwidths indicated by the third capability reporting information. After the second communication device determines the second bandwidth, the second communication device sends the above-mentioned second configuration information to the first communication device, and accordingly, the first communication device receives the above-mentioned second configuration information.

[0232] Optionally, the second configuration information can also be used to indicate a candidate value set of the second bandwidth, which can include a plurality of candidate values. For example, the first configuration information can include one or more of the following information: a plurality of bandwidth values, a plurality of resource block numbers, a plurality of bandwidth numbers, a plurality of bandwidth types, a plurality of bandwidth aggregation levels, a plurality of subcarrier numbers, a plurality of subcarrier numbers, or a plurality of subcarrier types. The above information can be used to indicate a plurality of bandwidths (i.e., a plurality of candidate values of the second bandwidth), so that the first communication device can determine a plurality of candidate values of the second bandwidth according to the second configuration information. After the first communication device receives the first information indicating switching from the first bandwidth to the second bandwidth, the first communication device can determine the second bandwidth according to the second configuration information and the first information.

[0233] For example, assuming that the second configuration information is used to indicate two candidate values of the second bandwidth (e.g., a first candidate value and a second candidate value, whose indexes are 0 and 1, respectively), and the first information includes a candidate value index of the second bandwidth (e.g., index 1), the first communication device can determine the candidate value of the second bandwidth as the second candidate value according to the candidate value index of the second bandwidth included in the first information and the candidate values of the second bandwidth indicated by the second configuration information.

[0234] In another possible implementation, the second bandwidth can be reported by the first communication device. Specifically, the first communication device sends capability reporting information (denoted as fourth capability reporting information) to the second communication device, and accordingly, the second communication device receives the fourth capability reporting information from the first communication device, which is used to indicate the second bandwidth that can be supported by the first communication device. That is, the second bandwidth can be determined by the first communication device itself and reported to the second communication device.

[0235] Optionally, before the second communication device sends the above-mentioned first information to the first communication device, the first communication device sends capability reporting information (denoted as fifth capability reporting information) to the second communication device. Accordingly, the second communication device receives the fifth capability reporting information from the first communication device. The fifth capability reporting information is used to indicate whether the first communication device supports receiving the first information. Or the fifth capability reporting information is used to indicate whether the first communication device supports switching the first bandwidth to the second bandwidth. Or the fifth capability reporting information is used to indicate whether the first communication device supports switching the first bandwidth to the second bandwidth, and if the time interval between the second resource and the first resource is less than or equal to the first time, and the bandwidth of the second resource is less than or equal to the first bandwidth. After the second communication device receives the fifth capability reporting information, the second communication device determines whether to send the first information to the first communication device or to indicate the second bandwidth for the first communication device.

[0236] The second resource is used for transmission of a channel and / or a signal, and the second resource can also be understood as a physical resource used for transmission of a channel and / or a signal after bandwidth switching, which can include time domain resources and / or frequency domain resources. When the first information is used to indicate the second resource, the first information can indicate a bandwidth of the second resource. The bandwidth of the second resource refers to a frequency range of the second resource. For example, the bandwidth of the second resource can be indicated by frequency domain resources of the second resource, or can be indicated by time domain resources of the second resource. The bandwidth of the second resource is less than the second bandwidth.

[0237] It should be noted that the number of second resources indicated by the first information is not limited in the embodiments of the present application. For example, the first information can be used to indicate one or more second resources.

[0238] For example, the bandwidth of the second resource can include one or more of the following cases:

[0239] In case one, if the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource is less than or equal to the first bandwidth.

[0240] The time interval between the second resource and the first resource refers to the interval between the time of the second resource and the time of the first resource. Alternatively, the time of the first resource is the time corresponding to the first resource, and the time of the second resource is the time corresponding to the second resource. Alternatively, the time of the first resource is the end time of the first resource, and the time of the second resource is the start time of the second resource. Alternatively, the end time of the first resource is the last time unit of the time domain resource of the first resource, and the start time of the second resource is the first time unit of the time domain resource of the second resource. The time unit can be, but is not limited to, a symbol, a time slot, a micro time slot, a frame or a subframe. Alternatively, the time interval between the second resource and the first resource refers to the time interval between the first time unit included in the second resource and the last time unit included in the first resource.

[0241] The first time refers to a bandwidth switching time (or a bandwidth switching delay, or an aggregation delay, or a processing delay). That is, the time required for switching from the first bandwidth to the second bandwidth, that is, the interval between the switching start time and the switching completion time.

[0242] Specifically, the end time of the first resource can be regarded as the switching start time, and the time interval between the second resource and the first resource is less than the first time, which means that the start time of the second resource is earlier than the switching completion time, that is, the start time of the second resource is within the bandwidth switching delay, and thus the bandwidth of the second resource can only be less than or equal to the first bandwidth (i.e. the bandwidth before switching, or the original bandwidth), that is, the bandwidth of the second resource is within the first bandwidth, so the first communication device can continue to transmit data on the original bandwidth.

[0243] In other words, when the time interval between the second resource and the first resource is less than the first time, and the bandwidth of the second resource is greater than the first bandwidth, the first communication device does not allow transmission of the channel and / or the signal on the second resource.

[0244] In other words, when the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource is not allowed to be greater than the first bandwidth. Or, when the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource can not be greater than the first bandwidth. Or, when the time interval between the second resource and the first resource is less than the first time, the first communication device does not expect the bandwidth of the second resource to be greater than the first bandwidth.

[0245] Case two: if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth.

[0246] Specifically, the end time of the first resource can be regarded as the switching start time, and the time interval between the second resource and the first resource is greater than the first time, which means that the start time of the second resource is later than the switching completion time, i.e., the start time of the second resource is outside the bandwidth switching delay, at this time the bandwidth switching has been completed, therefore, the bandwidth of the second resource is less than or equal to the second bandwidth (i.e., the bandwidth after switching, or the new bandwidth), that is, the bandwidth of the second resource is included in the second bandwidth, so the first communication device can transmit data on the new bandwidth.

[0247] That is, if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource can be greater than the first bandwidth.

[0248] In other words, when the time interval between the second resource and the first resource is greater than the first time, and the bandwidth of the second resource is greater than the second bandwidth, the first communication device does not allow transmission of the channel and / or the signal on the second resource.

[0249] Case three, if the time interval between the second resource and the first resource is equal to the first time, the bandwidth of the second resource can be less than or equal to the first bandwidth, or the bandwidth of the second resource can be less than or equal to the second bandwidth.

[0250] Specifically, the end time of the first resource can be regarded as the switching start time, and the time interval between the second resource and the first resource is equal to the first time, which means that the start time of the second resource is equal to the switching completion time, at this time it is a critical time point for completing bandwidth switching, therefore, the bandwidth of the second resource can be less than or equal to the first bandwidth, i.e., the bandwidth of the second resource can be included in the first bandwidth, so the first communication device can continue to transmit data on the original bandwidth, and the bandwidth of the second resource can also be less than or equal to the second bandwidth, i.e., the bandwidth of the second resource can also be included in the second bandwidth, so the first communication device can also transmit data on the new bandwidth. That is, if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource can be greater than the first bandwidth.

[0251] Alternatively, the first communication device does not allow transmission of the channel and / or the signal on the second resource when the time interval between the second resource and the first resource is equal to the first time, and the bandwidth of the second resource is greater than the larger one of the first bandwidth and the second bandwidth.

[0252] In a possible implementation, the second resource is used for transmission of a reference signal. When the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource is equal to the first bandwidth. When the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth. When the time interval between the second resource and the first resource is equal to the first time, the bandwidth of the second resource can be equal to the first bandwidth or the second bandwidth.

[0253] In a possible case, the second bandwidth is greater than the first bandwidth, i.e., switching from a smaller bandwidth to a larger bandwidth, and the value of the first time is recorded as a first value. In another possible case, the second bandwidth is less than the first bandwidth, i.e., switching from a larger bandwidth to a smaller bandwidth, and the value of the first time is recorded as a second value.

[0254] In a possible implementation, the first bandwidth and the second bandwidth respectively correspond to one or more scheduling modules (or hardware subsystems). Optionally, each scheduling module can be defined by at least one capability parameter: time domain resource length, frequency domain resource bandwidth, number of layers, number of antennas, control channel detection period, search space period, or control channel detection bandwidth. For example, one scheduling module corresponds to one BWP. For another example, the bandwidth of one scheduling module is 20 MHz.

[0255] If the first bandwidth is scheduled or activated, the first communication device needs to turn on the scheduling module corresponding to the first bandwidth, so that the scheduling module corresponding to the first bandwidth is in working mode. If the second bandwidth is scheduled or activated, the first communication device needs to turn on the scheduling module corresponding to the second bandwidth, so that the scheduling module corresponding to the second bandwidth is in working mode.

[0256] When the second bandwidth is greater than the first bandwidth, the number of scheduling modules corresponding to the second bandwidth is greater than the number of scheduling modules corresponding to the first bandwidth. That is, when switching from a smaller bandwidth to a larger bandwidth, the first communication device needs to turn on more scheduling modules. The first communication device needs to spend a certain time to turn on the scheduling module, i.e., the scheduling module needs a certain time to convert from a non-working mode (e.g., sleep mode) to a working mode.

[0257] When the second bandwidth is smaller than the first bandwidth, the number of scheduling modules corresponding to the second bandwidth is smaller than the number of scheduling modules corresponding to the first bandwidth. That is, when switching from a larger bandwidth to a smaller bandwidth, the first communication device needs to open fewer scheduling modules, or needs to close some scheduling modules. The time required for the first communication device to close the scheduling modules is smaller than the time required for the first communication device to open the scheduling modules, that is, the time required for the scheduling module to switch from the working mode to the non-working mode (for example, the sleep mode) is smaller than the time required for the scheduling module to switch from the non-working mode (for example, the sleep mode) to the working mode. In a possible example, the scheduling module can switch from the working mode to the non-working mode (for example, the sleep mode) immediately, that is, the time required for the first communication device to close the scheduling modules can be approximately considered as 0.

[0258] Based on the above implementation, in a possible design, the first value of the first time (that is, the value of the first time when the second bandwidth is larger than the first bandwidth) can be determined according to the time required for the first communication device to open the scheduling modules, and the second value of the first time (that is, the value of the first time when the second bandwidth is smaller than the first bandwidth) can be determined according to the time required for the first communication device to close the scheduling modules.

[0259] In a possible implementation, the first value of the first time is greater than the second value of the first time. That is, the time required when switching from a smaller bandwidth to a larger bandwidth is greater than the time required when switching from a larger bandwidth to a smaller bandwidth.

[0260] In a possible implementation, the first value of the first time is greater than 0. That is, the time required when switching from a smaller bandwidth to a larger bandwidth is greater than 0, that is, there is a switching delay when switching from a smaller bandwidth to a larger bandwidth. The first value of the first time is N time units. For example, the first value of the first time is 1 time slot. For another example, the first value of the first time is 2 time slots.

[0261] In a possible implementation, the second value of the first time is equal to 0. That is, the time required when switching from a larger bandwidth to a smaller bandwidth is 0, that is, there is no switching delay when switching from a larger bandwidth to a smaller bandwidth.

[0262] Through the above implementation, the value of the first time (that is, the bandwidth switching delay) can be determined according to the size relationship between the second bandwidth and the first bandwidth, so that within the bandwidth switching delay, the first communication device can transmit data on the original bandwidth, and outside the bandwidth switching delay, the first communication device can transmit data on the new bandwidth, thereby ensuring uninterrupted data transmission and reducing transmission delay.

[0263] In a possible implementation, the first time can be predefined. For example, a first value and a second value of the first time can be defined as default values. In this way, the first communication device and the second communication device can determine the first time according to the predefined information.

[0264] In another possible implementation, the first value and / or the second value of the first time can be configured by the second communication device. Specifically, the second communication device sends third configuration information to the first communication device, and the first communication device receives the third configuration information from the second communication device, where the third configuration information is used to indicate the first time. In this way, the first communication device can determine the first time according to the first configuration information.

[0265] In yet another possible implementation, the first value and / or the second value of the first time can be reported by the first communication device. Specifically, the first communication device sends capability reporting information (denoted as sixth capability reporting information) to the second communication device, and the second communication device receives the sixth capability reporting information from the first communication device, where the sixth capability reporting information is used to indicate the first time that can be supported by the first communication device. That is, the first time can be determined by the first communication device itself and reported to the second communication device.

[0266] S502, the first communication device determines the second resource according to the first information.

[0267] After the first communication device receives the first information, the first communication device can determine the second resource according to the first information, because the first information indicates the second resource. Specifically, the first communication device can determine the time domain resource and / or the frequency domain resource of the second resource according to the first information.

[0268] S503, the first communication device transmits a channel and / or a signal on the second resource.

[0269] After the first communication device determines the time domain resource and / or the frequency domain resource of the second resource, the first communication device can transmit a channel and / or a signal on the time domain resource and / or the frequency domain resource of the second resource.

[0270] In a possible implementation, when a time interval between the third resource and the first resource or the second resource is less than a first threshold, the third information is not allowed to be transmitted on the third resource. The third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth. In addition, when the third bandwidth is different from the second bandwidth, the second communication device is not allowed to send the third information on the third resource.

[0271] In the embodiments of the present application, not allowed can be understood as not expected by the first communication device.

[0272] The third information can also be understood as information used to indicate a bandwidth switching (a next bandwidth switching after the bandwidth switching indicated by the first information), i.e., information used to indicate switching from the first bandwidth or the second bandwidth to a third bandwidth.

[0273] The first threshold refers to a minimum time interval between two adjacent bandwidth switchings. For example, when a time interval between the current bandwidth switching and a previous bandwidth switching is less than the first threshold, the current bandwidth switching is not allowed (or is not expected). For another example, when the time interval between the current bandwidth switching and the previous bandwidth switching is greater than or equal to the first threshold, the current bandwidth switching is allowed. Optionally, the first threshold can be predefined, or preconfigured by the second communication device, or reported by the first communication device.

[0274] The third resource refers to a physical resource used to transmit a channel and / or a signal, and the physical resource can include a time domain resource and / or a frequency domain resource. The time interval between the third resource and the first resource refers to an interval between a time of the third resource and a time of the first resource. Optionally, the time of the first resource is a time corresponding to the first resource, and the time of the third resource is a time corresponding to the third resource. Alternatively, the time of the first resource is an end time of the first resource, and the time of the third resource is a start time of the third resource. Optionally, the end time of the first resource can be a last time unit of a time domain resource of the first resource, and the start time of the third resource can be a first time unit of a time domain resource of the third resource. Here, the time unit can be, but is not limited to, a symbol, a slot, a mini-slot, a frame, or a subframe.

[0275] The time interval between the third resource and the second resource refers to an interval between the time of the third resource and an end time of the second resource. Optionally, the end time of the second resource can be a last time unit of a time domain resource of the second resource, and the time of the third resource can be a first time unit of a time domain resource of the third resource. Here, the time unit can be, but is not limited to, a symbol, a slot, a mini-slot, a frame, or a subframe. Alternatively, the time interval between the third resource and the second resource refers to an interval between the time of the third resource and a start time of the second resource. Optionally, the start time of the second resource can be a first time unit of a time domain resource of the second resource, and the time of the third resource can be a first time unit of a time domain resource of the third resource. Here, the time unit can be, but is not limited to, a symbol, a slot, a mini-slot, a frame, or a subframe.

[0276] The time interval between the third resource and the first resource can also be understood as a time interval between the bandwidth switching indicated by the third information (denoted as the current bandwidth switching indication) and the bandwidth switching indicated by the first information (denoted as the last bandwidth switching indication). When the time interval between the third resource and the first resource is less than the first threshold, the current bandwidth switching is not allowed, so that the second communication device is not allowed to send the third information on the third resource, and / or the first communication device does not expect to receive the third information on the third resource.

[0277] In the above embodiments, the first threshold is introduced to represent a minimum time interval between two adjacent bandwidth switching indications. When the time interval between the current bandwidth switching indication and the last bandwidth switching indication is less than the first threshold, the bandwidth switching is not allowed to be indicated again, so that the bandwidth switching is avoided from being frequently performed, which is beneficial to reduce implementation complexity and save power consumption.

[0278] The time interval between the third resource and the second resource can also be understood as a time interval between the bandwidth switching indicated by the third information (denoted as the current bandwidth switching) and the bandwidth switching indicated by the first information (denoted as the last bandwidth switching). When the time interval between the third resource and the second resource is less than the first threshold, the current bandwidth switching is not allowed, so that the second communication device is not allowed to send the third information on the third resource, and / or the first communication device does not expect to receive the third information on the third resource.

[0279] In the above embodiments, the first threshold is introduced to represent a minimum time interval between two adjacent bandwidth switchings. When the time interval between the current bandwidth switching and the last bandwidth switching is less than the first threshold, the bandwidth switching is not allowed to be performed again, so that the bandwidth switching is avoided from being frequently performed, which is beneficial to reduce implementation complexity and save power consumption.

[0280] Optionally, the first information can further indicate a fourth resource, and a bandwidth of the fourth resource is less than or equal to the first bandwidth. The fourth resource refers to a physical resource used for transmitting a channel and / or a signal, and the physical resource can include a time domain resource and / or a frequency domain resource. When the first information is used to indicate the fourth resource, the first information can indicate the bandwidth of the fourth resource. The bandwidth of the fourth resource refers to a frequency range of the fourth resource. For example, the bandwidth of the fourth resource can be indicated by a frequency domain resource of the fourth resource, or can be indicated by a time domain resource of the fourth resource.

[0281] After the first communication device receives the first information, the first communication device can determine the fourth resource according to the first information since the first information indicates the fourth resource. Specifically, the first communication device can determine a time domain resource and / or a frequency domain resource of the fourth resource according to the first information, and transmit a channel and / or a signal on the time domain resource and / or the frequency domain resource of the fourth resource.

[0282] It should be noted that the number of fourth resources indicated by the first information is not limited by the embodiments of the present application. For example, the first information can be used to indicate one or more fourth resources.

[0283] According to the embodiments of the present application, when the bandwidth switching delay is caused by the bandwidth switching, within the bandwidth switching delay, the first communication device can transmit data on the original bandwidth, and outside the bandwidth switching delay, the first communication device can transmit data on the new bandwidth, so that uninterrupted data transmission can be ensured, and the transmission delay can be reduced.

[0284] Specifically, the first communication device can design its hardware subsystems according to the maximum capability required by one bandwidth (for example, one BWP or Sub-CC), that is, the specifications of each hardware subsystem are used to achieve the maximum capability required by one BWP or Sub-CC. When the second communication device indicates one BWP or Sub-CC to the first communication device, the first communication device opens a corresponding hardware subsystem. When the second communication device indicates two BWP or Sub-CC to the first communication device, the first communication device opens two corresponding hardware subsystems. In this way, the unopened hardware subsystems can remain in a sleep state. In the process of opening new hardware subsystems, the previously opened hardware subsystems can continue to work.

[0285] According to the embodiments of the present application, the first communication device can perform PDCCH blind detection on a small bandwidth through the hardware subsystem corresponding to the small bandwidth, so that the effect of saving energy consumption can be achieved. When there is a high-rate data transmission requirement, the first communication device can continue to transmit data on the small bandwidth while opening more hardware subsystems, so that uninterrupted data transmission can be ensured, and the transmission delay can be reduced.

[0286] Please refer to FIG. 6, which is a flowchart of another communication method provided by the embodiments of the present application. The embodiments shown in FIG. 6 take the first communication device and the second communication device as the interactive execution subject to illustrate the method. Illustratively, the first communication device can be the first communication device 401 in FIG. 4, and the second communication device can be the second communication device 402 in FIG. 4.

[0287] As shown in FIG. 6, the communication method can include but is not limited to the following steps S601 to S604.

[0288] S601, the second communication device sends first information to the first communication device on a first resource, and correspondingly, the first communication device receives the first information sent by the second communication device on the first resource. The bandwidth of the first resource is less than or equal to the first bandwidth. The first information is used to indicate a second bandwidth.

[0289] S602, the second communication device sends second information to the first communication device, and correspondingly, the first communication device receives the second information from the second communication device. The second information is used to indicate the second resource.

[0290] The second resource is used for transmission of a channel and / or a signal. The second resource can also be understood as a physical resource used for transmission of a channel and / or a signal after bandwidth switching. The physical resource can include a time domain resource and / or a frequency domain resource. When the second information is used to indicate the second resource, the second information can indicate a bandwidth of the second resource. The bandwidth of the second resource refers to a frequency range of the second resource. For example, the bandwidth of the second resource can be indicated by a frequency domain resource of the second resource, or can be indicated by a time domain resource of the second resource.

[0291] It should be noted that the number of second resources indicated by the second information is not limited in the embodiments of the present application. For example, the second information can be used to indicate one or more second resources.

[0292] Optionally, the second communication device sends the second information to the first communication device on the first resource, and correspondingly, the first communication device receives the second information sent by the second communication device on the first resource.

[0293] For example, taking the second communication device as a network device and the first communication device as a terminal device, the second information can be DCI.

[0294] S603, the first communication device determines the second resource according to the second information.

[0295] After the first communication device receives the second information, the first communication device can determine the second resource according to the second information because the second information indicates the second resource. Specifically, the first communication device can determine a time domain resource and / or a frequency domain resource of the second resource according to the second information.

[0296] S604, the first communication device transmits a channel and / or a signal on the second resource.

[0297] In a possible implementation, when a time interval between the third resource and the first resource or the second resource is less than a first threshold, the third information is not allowed to be transmitted on the third resource. The third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth. In addition, when the third bandwidth is different from the second bandwidth, the second communication device is not allowed to send the third information on the third resource.

[0298] Optionally, the first information can also indicate a fourth resource, and a bandwidth of the fourth resource is less than or equal to the first bandwidth. The first communication device transmits a channel and / or a signal on the fourth resource.

[0299] It should be understood that the contents not specifically described in the embodiment shown in FIG. 6 and the beneficial effects can be correspondingly referred to the related description in the embodiment shown in FIG. 5, which will not be repeated here.

[0300] In the embodiment shown in FIG. 5, the first information is used to indicate the second bandwidth and the second resource, that is, the second bandwidth and the second resource are indicated by the same information, so that the signaling overhead can be saved. In the embodiment shown in FIG. 6, the first information is used to indicate the second bandwidth, and the second information is used to indicate the second resource, that is, the second bandwidth and the second resource are indicated by different information respectively, so that the indication of the second resource can be more flexible.

[0301] Please refer to FIG. 7, which is a flow diagram of another communication method provided by the embodiments of the present application. The embodiment shown in FIG. 7 takes the first communication device and the second communication device as the interactive execution subject to illustrate the method. Exemplarily, the first communication device can be the first communication device 401 in FIG. 4, and the second communication device can be the second communication device 402 in FIG. 4.

[0302] As shown in FIG. 7, the communication method can include but not limited to the following steps S701 to S703.

[0303] S701, the second communication device sends the first information to the first communication device on the first resource, and correspondingly, the first communication device receives the first information sent by the second communication device on the first resource. The bandwidth of the first resource is less than or equal to the first bandwidth. The first information is used to indicate the second resource.

[0304] The second resource is used for transmission channel and / or signal, and the second resource can also be understood as the physical resource used for transmission channel and / or signal after the bandwidth switching, which can include time domain resource and / or frequency domain resource. When the first information is used to indicate the second resource, the first information can indicate the bandwidth of the second resource. The bandwidth of the second resource refers to the frequency range of the second resource, which can be indicated by the frequency domain resource of the second resource, or can be indicated by the time domain resource of the second resource.

[0305] It should be noted that the number of the second resources indicated by the first information is not limited in the embodiments of the present application, for example, the first information can be used to indicate one or more second resources.

[0306] Exemplarily, the bandwidth of the second resource can include one or more of the following cases:

[0307] Case one, if the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource is less than or equal to the first bandwidth.

[0308] Specifically, the end time of the first resource can be regarded as the switching start time, and the time interval between the second resource and the first resource is less than the first time, which means that the start time of the second resource is earlier than the switching completion time, i.e., the start time of the second resource is within the bandwidth switching delay, at this time, the bandwidth switching has not been completed, therefore, the bandwidth of the second resource can only be less than or equal to the first bandwidth (i.e., the bandwidth before switching, or the original bandwidth), that is, the bandwidth of the second resource is within the first bandwidth, so the first communication device can continue to transmit data on the original bandwidth.

[0309] Alternatively, when the time interval between the second resource and the first resource is less than the first time, and the bandwidth of the second resource is greater than the first bandwidth, the first communication device does not allow to transmit channels and / or signals on the second resource.

[0310] Alternatively, when the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource is not allowed to be greater than the first bandwidth. Alternatively, when the time interval between the second resource and the first resource is less than the first time, the bandwidth of the second resource can not be greater than the first bandwidth. Alternatively, when the time interval between the second resource and the first resource is less than the first time, the first communication device does not expect the bandwidth of the second resource to be greater than the first bandwidth.

[0311] Case two: if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth.

[0312] Specifically, the end time of the first resource can be regarded as the switching start time, and the time interval between the second resource and the first resource is greater than the first time, which means that the start time of the second resource is later than the switching completion time, i.e., the start time of the second resource is outside the bandwidth switching delay, at this time, the bandwidth switching has been completed, therefore, the bandwidth of the second resource can be greater than the first bandwidth, i.e., the first communication device can switch to a larger bandwidth to transmit data.

[0313] That is, if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource can be greater than the first bandwidth.

[0314] It should be noted that when the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource can also be less than or equal to the first bandwidth, i.e., the first communication device can also switch to a smaller bandwidth to transmit data.

[0315] Case three, if the time interval between the second resource and the first resource is equal to the first time, the bandwidth of the second resource can be less than or equal to the first bandwidth, or the bandwidth of the second resource can be greater than the first bandwidth.

[0316] Specifically, the end time of the first resource can be regarded as the switching start time, the time interval between the second resource and the first resource is equal to the first time, and the start time of the second resource is equal to the switching completion time. At this time, it is a critical time point for completing bandwidth switching. Therefore, the bandwidth of the second resource can be less than or equal to the first bandwidth, or can be greater than the first bandwidth.

[0317] S702, the first communication device determines the second resource according to the first information.

[0318] S703, the first communication device transmits a channel and / or a signal on the second resource.

[0319] In a possible implementation, when the time interval between the third resource and the first resource or the second resource is less than the first threshold, the third information is not allowed to be transmitted on the third resource. The third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth. When the third bandwidth is different from the second bandwidth, the second communication device is not allowed to send the third information on the third resource.

[0320] Optionally, the first information can also indicate a fourth resource, and the bandwidth of the fourth resource is less than or equal to the first bandwidth. The first communication device transmits a channel and / or a signal on the fourth resource.

[0321] It should be understood that the content not specifically described and the beneficial effects in the embodiment shown in FIG. 7 can be correspondingly referred to the related description in the embodiment shown in FIG. 5 described above, and will not be described here.

[0322] In the embodiment shown in FIG. 5, the first information is used to indicate the second bandwidth and the second resource, and the bandwidth of the second resource is related to the second bandwidth. In the embodiment shown in FIG. 7, the first information is used to indicate the second resource, and the second bandwidth does not need to be indicated. In this way, the bandwidth selection of the second resource can be more flexible.

[0323] It should be understood that, regarding the steps in the embodiments shown in FIG. 5 to FIG. 7 described above, unless otherwise specified herein, the execution of these steps does not have strict order limitation.

[0324] Please refer to FIG. 8, which is a schematic diagram of a resource indicated by the first information in the embodiment of the present application. As shown in FIG. 8, the horizontal coordinate represents the time domain, and the vertical coordinate represents the frequency domain. slot1, slot2 and slot3 represent time slots. PDC1 represents the first information, and the time-frequency resource where PDC1 is located is the first resource. The time-frequency resource where PDS4 is located is the fourth resource, the time-frequency resource where PDS2 is located is the second resource, and the bandwidth of PDS4 is less than the bandwidth of PDS2. t represents the time interval between the second resource and the first resource. PDC represents other possible control information, and PDS represents other possible data information.

[0325] In a possible implementation, the PDC1 is only used to indicate time-frequency resources of the PDS2.

[0326] In another possible implementation, the PDC1 is only used to indicate time-frequency resources of the PDS4.

[0327] In yet another possible implementation, the PDC1 is used to indicate time-frequency resources of the PDS2 and the PDS4.

[0328] The above describes the method of the embodiments of the present application in detail, and the following describes the device embodiments related to the embodiments of the present application.

[0329] Please refer to FIG. 9, which is a structural schematic diagram of a communication device provided by the embodiments of the present application.

[0330] As shown in FIG. 9, the communication device 900 can include a transceiver unit 901 and a processing unit 902. The transceiver unit 901 and the processing unit 902 can be software, hardware, or a combination of software and hardware.

[0331] The transceiver unit 901 can implement a sending function and / or a receiving function, and the transceiver unit 901 can also be described as a communication unit. The transceiver unit 901 can also be a unit integrating an acquisition unit and a sending unit, where the acquisition unit is used to implement a receiving function, and the sending unit is used to implement a sending function. Optionally, the transceiver unit 901 can be used to receive information sent by other devices, and can also be used to send information to other devices.

[0332] In a possible design, the communication device 900 can correspond to the first communication device in the method embodiments described above. For example, the communication device 900 can be the first communication device in the method embodiments shown in FIGS. 5-7 described above, or can be a chip in the first communication device. The communication device 900 can include units used to perform operations performed by the first communication device in the method embodiments described above, and each unit in the communication device 900 is respectively used to implement operations performed by the first communication device in the method embodiments described above. Descriptions of each unit are as follows:

[0333] The transceiver unit 901 is configured to receive first information on a first resource, where a bandwidth of the first resource is less than or equal to a first bandwidth, and the first information is used to indicate a second bandwidth and / or a second resource.

[0334] The processing unit 902 is configured to determine the second resource, where the second resource is used to transmit a channel and / or a signal.

[0335] The transceiver unit 901 is further configured to transmit the channel and / or the signal on the second resource.

[0336] if the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is less than or equal to the first bandwidth; and / or,

[0337] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth.

[0338] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second bandwidth and the second resource; and the processing unit 902, in the determination of the second resource, is specifically configured to determine the second resource according to the first information.

[0339] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second bandwidth; the transceiver 901 is further configured to receive second information; and the processing unit 902, in the determination of the second resource, is specifically configured to determine the second resource according to the second information.

[0340] In a possible implementation, the second resource is used to transmit a channel and / or a signal, including: the second resource is used to transmit a reference signal;

[0341] if the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or,

[0342] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth.

[0343] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including: the first information is used to indicate the second resource;

[0344] if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth.

[0345] In a possible implementation, the first time satisfies one or more of the following:

[0346] a first value of the first time is greater than a second value of the first time;

[0347] the first value of the first time is greater than 0;

[0348] the second value of the first time is equal to 0;

[0349] The first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth.

[0350] In a possible implementation, when the first information is used to indicate the second bandwidth, the first information is used to indicate one or more of the following information:

[0351] a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, a subcarrier type, or a bandwidth switch.

[0352] In a possible implementation, the transceiver 901 is further configured to receive first configuration information, and the processing unit 902 is further configured to determine the first bandwidth according to the first configuration information, the first configuration information including one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, or a subcarrier type; and / or,

[0353] The processing unit 902 is further configured to determine the first bandwidth according to predefined information.

[0354] In a possible implementation, the transceiver 901 is further configured to receive second configuration information, the second configuration information including one or more of the following information used to indicate a candidate value set of the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers, or one or more subcarrier types.

[0355] The processing unit 902 is further configured to determine the second bandwidth according to the second configuration information and the first information.

[0356] In a possible implementation, when a time interval of a third resource from the first resource or the second resource is less than a first threshold, the transceiver 901 does not allow transmission of third information on the third resource, where the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth.

[0357] In a possible implementation, the transceiver 901 is further configured to send capability reporting information, the capability reporting information being used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold.

[0358] Please refer to Fig. 10, which is a structural diagram of another communication apparatus provided in the embodiments of the present application.

[0359] As shown in Fig. 10, the communication apparatus 1000 can include a transceiver unit 1001. The transceiver unit 1001 can be software, hardware, or a combination of software and hardware.

[0360] The transceiver unit 1001 can implement a sending function and / or a receiving function, and the transceiver unit 1001 can also be described as a communication unit. The transceiver unit 1001 can also be a unit integrating an acquisition unit and a sending unit, where the acquisition unit is configured to implement a receiving function, and the sending unit is configured to implement a sending function. Optionally, the transceiver unit 1001 can be configured to receive information sent by another apparatus, and also be configured to send information to another apparatus.

[0361] In a possible design, the communication apparatus 1000 can correspond to the second communication apparatus in the method embodiments, for example, the communication apparatus 1000 can be the second communication apparatus in the method embodiments shown in Figs. 5-7, or can be a chip in the second communication apparatus. The communication apparatus 1000 can include units configured to perform the operations performed by the second communication apparatus in the method embodiments, and each unit in the communication apparatus 1000 is configured to implement the operations performed by the second communication apparatus in the method embodiments. Specifically, the units are as follows:

[0362] The transceiver unit 1001 is configured to send first information on a first resource, where a bandwidth of the first resource is less than or equal to a first bandwidth, and the first information is used to indicate a second bandwidth and / or a second resource, and the second resource is used for a transmission channel and / or a signal.

[0363] If a time interval between the second resource and the first resource is less than or equal to a first time, a bandwidth of the second resource is less than or equal to the first bandwidth; and / or,

[0364] If the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth.

[0365] In a possible implementation, the first information used to indicate the second bandwidth and / or the second resource includes that the first information is used to indicate the second bandwidth, and the transceiver unit 1001 is further configured to send second information, where the second information is used to indicate the second resource.

[0366] In a possible implementation, the second resource used for the transmission channel and / or the signal includes that the second resource is used for transmission of a reference signal.

[0367] when the time interval of the second resource from the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or,

[0368] when the time interval of the second resource from the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth.

[0369] In a possible implementation, the first information is used to indicate the second bandwidth and / or the second resource, including that the first information is used to indicate the second resource.

[0370] when the time interval of the second resource from the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth.

[0371] In a possible implementation, the first time satisfies one or more of the following:

[0372] a first value of the first time is greater than a second value of the first time;

[0373] the first value of the first time is greater than 0;

[0374] the second value of the first time is equal to 0;

[0375] wherein the first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth.

[0376] In a possible implementation, when the first information is used to indicate the second bandwidth, the first information is used to indicate one or more of the following information:

[0377] a bandwidth value, a resource block quantity, a partial bandwidth number, a partial bandwidth quantity, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier quantity, a subcarrier type, or a bandwidth switching.

[0378] In a possible implementation, the transceiver 1001 is further configured to send first configuration information, and the first configuration information includes one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block quantity, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a bandwidth number, a subcarrier number, a subcarrier quantity, or a subcarrier type.

[0379] In a possible implementation, the transceiver 1001 is further configured to send second configuration information, where the second configuration information includes one or more of the following information used to indicate the candidate value set of the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers, or one or more subcarrier types.

[0380] In a possible implementation, when a time interval between a third resource and the first resource or the second resource is less than a first threshold, the transceiver 1001 does not allow transmission of third information on the third resource, where the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth.

[0381] In a possible implementation, the transceiver 1001 is further configured to receive capability reporting information, where the capability reporting information is used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold.

[0382] According to the embodiments of the present application, each unit in the apparatuses shown in FIG. 9 and FIG. 10 can be combined into one or several other units respectively or all, or some of the units can be further split into a plurality of units with smaller functions to constitute, which can realize the same operation without affecting the realization of the technical effects of the embodiments of the present application. The units are divided based on logical functions, and in actual application, the function of one unit can also be realized by a plurality of units, or the functions of a plurality of units are realized by one unit. In other embodiments of the present application, the apparatuses can also include other units, and in actual application, these functions can also be realized by other units and can be realized by a plurality of units in cooperation.

[0383] It should be noted that the implementation of each unit can also correspond to the description of the corresponding method embodiments.

[0384] Please refer to FIG. 11, which is a structural schematic diagram of another communication apparatus provided by the embodiments of the present application. The communication apparatus 1100 can include a processor 1101. Optionally, the communication apparatus 1100 can also include a memory 1102. Further optionally, the communication apparatus 1100 can also include a communication interface 1103 and a bus 1104. The processor 1101, the memory 1102 and the communication interface 1103 are communicatively connected with each other through the bus 1104. The communication interface 1103 is used to exchange data with other devices.

[0385] The processor 1101 is a module for performing arithmetic operations and logical operations, and can be one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor unit (MPU), and the like. The processor 1101 can also be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, and the like. The general-purpose processor can be a microprocessor or any conventional processor.

[0386] The memory 1102 is configured to provide a storage space, in which data such as an operating system and a computer program can be stored. The memory 1102 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM).

[0387] In a possible design, the communication apparatus 1100 can correspond to the first communication apparatus in the above-described method embodiments. For example, the communication apparatus 1100 can be the first communication apparatus in the above-described method embodiments, or can be a processor or circuit or chip or chip system in the first communication apparatus. The communication apparatus 1100 can include components for performing operations performed by the first communication apparatus in the above-described method embodiments, and each component in the communication apparatus 1100 respectively calls a computer program stored in the memory 1102 to perform the method shown in the above-described method embodiments in order to perform the operations performed by the first communication apparatus in the above-described method embodiments.

[0388] In another possible design, the communication apparatus 1100 can correspond to the second communication apparatus in the above-described method embodiments, for example, the communication apparatus 1100 can be the second communication apparatus in the above-described method embodiments, or can be a processor or circuit or chip or chip system in the second communication apparatus. The communication apparatus 1100 can include components for performing operations performed by the second communication apparatus in the above-described method embodiments, and each component in the communication apparatus 1100 respectively, in order to implement the operations performed by the second communication apparatus in the above-described method embodiments, the processor 1101 invokes the computer program stored in the memory 1102 to perform the method shown in the above-described method embodiments.

[0389] Optionally, the communication apparatus 1100 can be a chip or chip system. For the case that the communication apparatus 1100 is a chip or chip system, the structure schematic diagram of the chip can be referred to Fig. 12.

[0390] As shown in Fig. 12, the chip 1200 includes a processor 1201 and an interface 1202. Wherein, the number of the processor 1201 can be one or more, and the number of the interface 1202 can be multiple. It should be noted that the functions of the processor 1201 and the interface 1202 respectively can be realized by hardware design, or realized by software design, or realized by combination of software and hardware, which is not limited here.

[0391] Optionally, the chip 1200 can further include a memory 1203, and the memory 1203 is used to store necessary program instructions and data.

[0392] In the present application, the processor 1201 can be used to invoke the implementation program of the communication method provided by one or more embodiments of the present application in the electronic device from the memory 1203, and execute the instructions contained in the program. The interface 1202 can be used to output the execution result of the processor 1201. In the present application, the interface 1202 can be specifically used to output various messages or information of the processor 1201.

[0393] The communication method provided by one or more embodiments of the present application can refer to the above-described various method embodiments, which will not be repeated here.

[0394] According to the method provided by the embodiments of the present application, the embodiments of the present application further provide a computer readable storage medium, and the computer readable storage medium stores computer programs or instructions, when the computer programs or instructions run on the processor, the method shown in the above-described method embodiments can be implemented.

[0395] According to the method provided in the embodiments of the present application, the embodiments of the present application further provide a computer program product, which includes a computer program or instructions, and when the computer program or instructions run on a processor, the method shown in the method embodiments can be implemented.

[0396] According to the method provided in the embodiments of the present application, the embodiments of the present application further provide a communication system, which includes at least one of the communication device 900, or the communication device 1000, or the communication device 1100, or the chip 1200.

[0397] According to the method provided in the embodiments of the present application, the embodiments of the present application further provide a communication system, which includes a first communication device and a second communication device, wherein the first communication device is configured to perform the steps performed by the first communication device in the method embodiments, and the second communication device is configured to perform the steps performed by the second communication device in the method embodiments.

[0398] It should be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a hard disk (HDD), a solid-state drive (SSD), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM can be used, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0399] In the embodiments described above, the entire or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, the entire or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded on a computer, the entire or part of the embodiments described in the present application are executed by the computer. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment or other programmable apparatus. The computer programs or instructions can 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 programs or instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through wired or wireless manner. The computer readable storage medium can be any available medium or a data storage device integrated with one or more available media, such as a server, data center and the like. The available medium can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a digital video disc; or a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0400] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments provided herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0401] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0402] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the division of the above-described device embodiment is merely an example, and there can be other division manners. For example, the above-described unit can be combined or integrated in another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0403] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0404] In addition, each functional unit in the various embodiments of the present application can be integrated in one processing unit, or each unit can be a physically separate unit, or two or more units can be integrated in one unit.

[0405] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, and various program codes that can be stored in the medium.

[0406] The above is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application.

Claims

A communication method characterized by comprising: comprising: receiving first information on a first resource, a bandwidth of the first resource being less than or equal to a first bandwidth, the first information being used to indicate a second bandwidth and / or a second resource; determining the second resource, the second resource being used to transmit a channel and / or a signal; transmitting the channel and / or the signal on the second resource; if a time interval of the second resource from the first resource is less than or equal to a first time, a bandwidth of the second resource is less than or equal to the first bandwidth; and / or, if the time interval of the second resource from the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth. the first information being used to indicate the second bandwidth and / or the second resource, determining the second resource comprising: The method of claim 1, wherein the first information being used to indicate the second bandwidth and the second resource, determining the second resource according to the first information; or, the first information being used to indicate the second bandwidth, receiving second information, the second information being used to indicate the second resource, determining the second resource according to the second information. the second resource being used to transmit the channel and / or the signal comprising: the second resource being used to transmit a reference signal; The method according to claim 2, characterized in that if the time interval of the second resource from the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or, if the time interval of the second resource from the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth. the first information being used to indicate the second bandwidth and / or the second resource comprising: the first information being used to indicate the second resource; The method of claim 1, wherein if the time interval of the second resource from the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth. the first time satisfying one or more of: The method according to any one of claims 1 to 4, characterized in that a first value of the first time being greater than a second value of the first time; the first value of the first time being greater than 0; the second value of the first time being equal to 0; wherein the first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth. when the first information is used to indicate the second bandwidth, the first information being used to indicate one or more of: The method according to any one of claims 1 to 5, characterized in that a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, a subcarrier type, or a bandwidth switch. the method further comprising: The method according to any one of claims 1 to 6, characterized in that receiving first configuration information, determining the first bandwidth according to the first configuration information, the first configuration information comprising one or more of the following information used to indicate the first bandwidth: a bandwidth value, a resource block number, a partial bandwidth number, a partial bandwidth type, a partial bandwidth aggregation level, a subcarrier number, a subcarrier number, or a subcarrier type; and / or, determining the first bandwidth according to predefined information. the method further comprising: The method according to any one of claims 1 to 7, characterized in that ​ receive second configuration information, the second configuration information comprising one or more of the following information for indicating a set of candidate values of the second bandwidth: one or more bandwidth values, one or more numbers of resource blocks, one or more part bandwidth numbers, one or more part bandwidth types, one or more part bandwidth aggregation levels, one or more subcarrier numbers, one or more numbers of subcarriers, or one or more subcarrier types; determine the second bandwidth according to the second configuration information and the first information. The method according to any one of claims 1 to 8, characterized in that The method further comprises: when a time interval between a third resource and the first resource or the second resource is less than a first threshold, not allowing transmission of third information on the third resource, wherein the third information is used to indicate a third bandwidth, and the third bandwidth is different from the second bandwidth. The method according to any one of claims 1 to 9, characterized in that The method further comprises: sending capability reporting information, the capability reporting information being used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold. A communication method characterized by comprising: comprises: sending first information on a first resource, a bandwidth of the first resource being less than or equal to a first bandwidth, the first information being used to indicate a second bandwidth and / or a second resource, the second resource being used for transmission of a channel and / or a signal; if a time interval between the second resource and the first resource is less than or equal to a first time, a bandwidth of the second resource is less than or equal to the first bandwidth; and / or, if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is less than or equal to the second bandwidth. The method of claim 11, wherein The first information being used to indicate a second bandwidth and / or a second resource comprises: the first information being used to indicate a second bandwidth; the method further comprises: sending second information, the second information being used to indicate the second resource. The method of claim 12, wherein The second resource being used for transmission of a channel and / or a signal comprises: the second resource being used for transmission of a reference signal; when the time interval between the second resource and the first resource is less than or equal to the first time, the bandwidth of the second resource is equal to the first bandwidth; and / or, when the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is equal to the second bandwidth. The method of claim 11, wherein The first information being used to indicate a second bandwidth and / or a second resource comprises: the first information being used to indicate the second resource; if the time interval between the second resource and the first resource is greater than the first time, the bandwidth of the second resource is greater than the first bandwidth. The method according to any one of claims 11 to 14, characterized in that The first time satisfies one or more of the following: a first value of the first time is greater than a second value of the first time; the first value of the first time is greater than 0; the second value of the first time is equal to 0; wherein the first value of the first time is a value of the first time when the second bandwidth is greater than the first bandwidth, and the second value of the first time is a value of the first time when the second bandwidth is less than the first bandwidth. The method according to any one of claims 11 to 15, characterized in that When the first information is used to indicate a second bandwidth, the first information is used to indicate one or more of the following information: Bandwidth value, number of resource blocks, partial bandwidth number, number of partial bandwidths, type of partial bandwidth, aggregation level of partial bandwidth, subcarrier number, number of subcarriers, subcarrier type, or bandwidth switching. The method according to any one of claims 11 to 16, characterized in that The method further includes: Send first configuration information, which includes one or more of the following information to indicate the first bandwidth: bandwidth value, number of resource blocks, partial bandwidth number, partial bandwidth type, partial bandwidth aggregation level, bandwidth number, subcarrier number, number of subcarriers, or subcarrier type. The method according to any one of claims 11 to 17, characterized in that The method further includes: Send second configuration information, which includes one or more of the following information to indicate the set of candidate values ​​for the second bandwidth: one or more bandwidth values, one or more resource block numbers, one or more partial bandwidth numbers, one or more partial bandwidth types, one or more partial bandwidth aggregation levels, one or more subcarrier numbers, one or more subcarrier numbers, or one or more subcarrier types. The method according to any one of claims 11 to 18, characterized in that The method further includes: When the time interval between the third resource and the first resource or the second resource is less than a first threshold, the transmission of third information on the third resource is not allowed, wherein the third information is used to indicate a third bandwidth, which is different from the second bandwidth. The method according to any one of claims 11 to 19, characterized in that The method further includes: Receive capability reporting information, which is used to indicate one or more of the following: the first bandwidth, the second bandwidth, the first time, or the first threshold. A communication device characterized by comprising: include: A unit for performing the method as described in any one of claims 1 to 10, or a unit for performing the method as described in any one of claims 11 to 20. A communication device, characterized by The method includes a processor for executing a computer program or instructions, which, when executed, cause the method of any one of claims 1 to 10, or the method of any one of claims 11 to 20, to be implemented. A computer-readable storage medium, characterized by The computer-readable storage medium stores a computer program or instructions that, when executed, cause the method as described in any one of claims 1 to 10, or the method as described in any one of claims 11 to 20, to be implemented. A computer program product, characterized by It includes a computer program or instructions that, when executed, cause the method of any one of claims 1 to 10 to be implemented, or the method of any one of claims 11 to 20 to be implemented. A communication system characterized by include: A first communication device and a second communication device, wherein the first communication device is used to perform the method as described in any one of claims 1 to 10, and the second communication device is used to perform the method as described in any one of claims 11 to 20.

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