Communication method and apparatus

Abstract

A communication method and an apparatus. The method comprises: upon receiving a capability query message, sending capability information to a network device, wherein the capability information comprises first information and second information, the first information is used for indicating that M carriers are supported in a first band, the second information is used for indicating that N carriers are supported in the first band under a first condition, the first band is a band in a first band combination, and N and M are integers greater than 0. In the method, capability information comprises first information and second information in a first band, wherein the first information and the second information respectively represent the carrier aggregation capability of a terminal device in the first band under different conditions, for example, when a first condition is not satisfied, M carriers are supported in the first band, and when the first condition is satisfied, N carriers are supported in the first band. In this way, the carrier aggregation capability of the terminal device can be flexibly indicated.

Description

A communication method and apparatus

[0001] Cross Reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202411322506.4, filed on September 20, 2024, and entitled “A communication method and apparatus”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, and in particular to a communication method and apparatus. BACKGROUND

[0004] Carrier aggregation (CA) technology refers to providing communication services for a terminal device through multiple component carriers (CCs), which can increase the bandwidth of data transmission. The terminal device can indicate the bands and band combinations (BCs) supported by the terminal device to a network device through capability information; the band combination can be used to express the CA capability supported by the terminal device. For a band combination, the band information included in the band combination is also indicated, which can include the identification of the band and the CA bandwidth class of the band, and the like.

[0005] Generally speaking, for non-contiguous CA, in order to suppress interference, the terminal device needs two relatively independent radio frequency chains, however, under certain conditions (for example, the non-contiguous carriers meet the co-site condition), the terminal device can apply one radio frequency chain to support non-contiguous CA. Therefore, under the condition that the number of radio frequency chains of the terminal device is unchanged, the CA capability supported by the terminal device under different conditions can be different.

[0006] Therefore, how the terminal device indicates the CA capability through the capability information is a problem to be solved. SUMMARY

[0007] The present application provides a communication method and apparatus to indicate the CA capability through the capability information.

[0008] In a first aspect, the present application provides a communication method, the execution subject of the method is a terminal device or a module or a chip in the terminal device, and the terminal device is taken as an example for description. The method comprises: receiving a capability query message; the capability query message is used for querying capability information; and sending the capability information, wherein the capability information comprises first information and second information, the first information is used for indicating that M carriers are supported in a first frequency band, the second information is used for indicating that N carriers are supported in the first frequency band under a first condition, the first frequency band is a frequency band in a first frequency band combination, and N and M are integers greater than 0.

[0009] According to the method provided in the present application, the capability information of the terminal device comprises the first information and the second information of the first frequency band, and the first information and the second information respectively represent the carrier aggregation capability of the terminal device in the first frequency band under different conditions. Specifically, in the case where the first condition is not met, the first information indicates that M carriers are supported in the first frequency band, so that the network device can schedule resources for the terminal device according to the first information, for example, scheduling the terminal device in the M carriers indicated by the first information; in the case where the first condition is met, the second information indicates that N carriers are supported in the first frequency band, so that the network device can schedule resources for the terminal device according to the second information, for example, scheduling the terminal device in the N carriers indicated by the second information; in this way, the carrier aggregation capability of the terminal device can be flexibly indicated, the network device can schedule resources according to the carrier aggregation capability of the terminal device, the communication efficiency is improved, and it is also ensured that the scheduled resources will not exceed the capability of the terminal device.

[0010] In a possible implementation, the first information used for indicating that M carriers are supported in the first frequency band comprises: the first information used for indicating that a first carrier aggregation bandwidth level is supported in the first frequency band, and the first carrier aggregation bandwidth level corresponds to the M carriers.

[0011] In a possible implementation, the second information used for indicating that N carriers are supported in the first frequency band under the first condition comprises:

[0012] The second information is used for indicating that the number N of non-continuous carriers supported in the first frequency band under the first condition; or the second information is used for indicating that X second carrier aggregation bandwidth levels are supported in the first frequency band under the first condition; the X second carrier aggregation bandwidth levels correspond to the N carriers, the second carrier aggregation bandwidth level corresponds to one carrier or a plurality of continuous carriers, and X is an integer greater than 0; or the value of the second information is a preset value, indicating that N carriers are supported in the first frequency band under the first condition.

[0013] In the method, the second information is used to indicate the number N of discontinuous carriers supported in the first frequency band under the first condition, and the overhead of the second information can be reduced. The second information is used to indicate X second carrier aggregation bandwidth levels supported in the first frequency band under the first condition, and the first information and the second information can be decoupled, i.e., the carrier aggregation bandwidth level indicated by the first information and the carrier aggregation bandwidth level indicated by the second information can be different, and flexibility is improved.

[0014] In a possible implementation, the first condition includes at least one of the following: a carrier aggregation bandwidth of the N carriers is less than or equal to a first threshold; a maximum receive time difference (MRTD) of the N carriers is less than or equal to a second threshold; a power spectral density (PSD) difference of the N carriers is less than or equal to a third threshold; the N carriers are co-sited carriers; and the N carriers correspond to a same radio frequency (RF) chain.

[0015] In a possible implementation, the N carriers include discontinuous carriers.

[0016] In a possible implementation, the capability information further includes third information and fourth information; the third information is used to indicate carrier level capabilities of M carriers supported in the first frequency band; the fourth information is used to indicate carrier level capabilities of N-M carriers in the N carriers supported in the first frequency band under the first condition; or the fourth information is used to indicate carrier level capabilities of the N carriers supported in the first frequency band under the first condition.

[0017] Through the method, the carrier level capabilities of the M carriers and the carrier level capabilities of the N carriers can be different or the same, and flexibility of the carrier level capabilities is improved.

[0018] In a possible implementation, the capability information further includes a first feature set combination and a second feature set combination; the first feature set combination is used to indicate a first frequency band level capability of the first frequency band and carrier level capabilities of M carriers of the first frequency band.

[0019] The second feature set combination is used to indicate a second frequency band level capability of the first frequency band under the first condition and carrier level capabilities of N carriers of the first frequency band.

[0020] Through the method, the first frequency band corresponds to two frequency band level capabilities, i.e., the first frequency band level capability and the second frequency band level capability, and flexibility of the frequency band level capability of the first frequency band is improved.

[0021] In a possible implementation, the first frequency band combination further includes a second frequency band; the first characteristic set combination is further used to indicate a third frequency band level capability of the second frequency band, and a carrier level capability of at least one carrier of the second frequency band; and the second characteristic set combination is further used to indicate a fourth frequency band level capability of the second frequency band, and a carrier level capability in the at least one carrier of the second frequency band.

[0022] In a possible implementation, the capability information further includes a first frequency band combination level capability set and a second frequency band combination level capability set; the first frequency band combination level capability set is used to indicate a first capability of the first frequency band combination in a case where the first frequency band supports M carriers, and the first capability includes at least one of a first bandwidth combination set capability and a first power class capability; and the second frequency band combination level capability set is used to indicate a second capability of the first frequency band combination in a case where the first frequency band supports N carriers, and the second capability includes at least one of a second bandwidth combination set capability and a second power class capability.

[0023] By the method, the first frequency band combination corresponds to two capabilities, and flexibility of the first frequency band combination capability can be improved.

[0024] In a second aspect, the present application provides a communication method, an execution subject of the method is a network device or a module or chip in the network device, and the network device is taken as an example for description. The method includes: sending a capability query message; the capability query message is used to query capability information; receiving the capability information, the capability information includes first information and second information, the first information is used to indicate that a first frequency band supports M carriers, the second information is used to indicate that the first frequency band supports N carriers under a first condition, the first frequency band is a frequency band in a first frequency band combination, and N and M are integers greater than 0.

[0025] By the method provided in the present application, the capability information of the terminal device includes first information and second information of the first frequency band, and the first information and the second information respectively represent the carrier aggregation capability of the terminal device in the first frequency band under different conditions. Specifically, in the case where the first condition is not met, the first information indicates that M carriers are supported in the first frequency band, so that the network device can schedule resources for the terminal device according to the first information, for example, scheduling the terminal device in the M carriers indicated by the first information; in the case where the first condition is met, the second information indicates that N carriers are supported in the first frequency band, and the network device can schedule resources for the terminal device according to the second information, for example, scheduling the terminal device in the N carriers indicated by the second information; in this way, the carrier aggregation capability of the terminal device can be flexibly indicated, the network device can schedule resources according to the carrier aggregation capability of the terminal device, the communication efficiency is improved, and it is also ensured that the scheduled resources will not exceed the capability of the terminal device. In addition, for the old network device, for example, the network device that does not support the second information, the second information can be ignored, and the first information is used to schedule resources for the terminal device; for the new network device, for example, the network device that supports the second information, the first information or the second information can be used to schedule resources for the terminal device, so that the backward compatibility of the system is realized, and the system compatibility is improved.

[0026] In a possible implementation, the first information is used to indicate that M carriers are supported in the first frequency band, including that the first information is used to indicate that a first carrier aggregation bandwidth level is supported in the first frequency band, and the first carrier aggregation bandwidth level corresponds to the M carriers.

[0027] In a possible implementation, the second information is used to indicate that N carriers are supported in the first frequency band under the first condition, including:

[0028] The second information is used to indicate that a number N of non-continuous carriers is supported in the first frequency band under the first condition; or the second information is used to indicate that X second carrier aggregation bandwidth levels are supported in the first frequency band under the first condition, the X second carrier aggregation bandwidth levels correspond to the N carriers, the second carrier aggregation bandwidth level corresponds to one carrier or a plurality of continuous carriers, and X is an integer greater than 0; or the value of the second information is a preset value, indicating that the N carriers are supported in the first frequency band under the first condition.

[0029] In a possible implementation, the first condition includes at least one of the following: a carrier aggregation bandwidth of the N carriers is less than or equal to a first threshold value; a maximum receiving time difference MRTD of the N carriers is less than or equal to a second threshold value; a power spectral density PSD difference of the N carriers is less than or equal to a third threshold value; the N carriers are co-sited carriers; and the N carriers correspond to a same radio frequency chain.

[0030] In a possible implementation, the N carriers include non-continuous carriers.

[0031] In a possible implementation, the capability information further includes third information and fourth information; the third information is used to indicate carrier-level capabilities of M carriers supported in the first frequency band; the fourth information is used to indicate carrier-level capabilities of N-M carriers supported in the first frequency band under the first condition; or, the fourth information is used to indicate carrier-level capabilities of N carriers supported in the first frequency band under the first condition.

[0032] In a possible implementation, the capability information further includes a first feature set combination and a second feature set combination; the first feature set combination is used to indicate a first frequency band-level capability of the first frequency band, and carrier-level capabilities of M carriers of the first frequency band; and

[0033] the second feature set combination is used to indicate a second frequency band-level capability of the first frequency band under the first condition, and carrier-level capabilities of N carriers of the first frequency band.

[0034] In a possible implementation, the first frequency band combination further includes a second frequency band; the first feature set combination is further used to indicate a third frequency band-level capability of the second frequency band, and carrier-level capabilities of at least one carrier of the second frequency band; and the second feature set combination is further used to indicate a fourth frequency band-level capability of the second frequency band, and carrier-level capabilities of at least one carrier of the second frequency band.

[0035] In a possible implementation, the capability information further includes a first frequency band combination-level capability set and a second frequency band combination-level capability set; the first frequency band combination-level capability set is used to indicate a first capability of the first frequency band combination in a case where M carriers are supported in the first frequency band, and the first capability includes at least one of a first bandwidth combination set capability and a first power class capability; and the second frequency band combination-level capability set is used to indicate a second capability of the first frequency band combination in a case where N carriers are supported in the first frequency band, and the second capability includes at least one of a second bandwidth combination set capability and a second power class capability.

[0036] In a third aspect, the present application provides a communication apparatus, which can implement any method provided in any of the first aspect to the second aspect. The communication apparatus can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0037] In a possible implementation, the communication apparatus includes a processor configured to support the communication apparatus to perform the corresponding functions of the terminal device or the network device in the above-mentioned method. The communication apparatus can further include a memory coupled to the processor, which stores the program instructions and data necessary for the communication apparatus. Optionally, the communication apparatus further includes an interface circuit for supporting the communication between the communication apparatus and the terminal device or the like.

[0038] In a possible implementation, the communication apparatus includes corresponding function modules for implementing the steps in the above-mentioned method. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

[0039] In a possible implementation, the structure of the communication apparatus includes a processing unit and a communication unit, which can perform the corresponding functions in the above-mentioned method examples, and the details are described in the method provided in any one of the first aspect to the second aspect, which will not be repeated here.

[0040] The fourth aspect provides a communication apparatus including a processor and an interface circuit for receiving signals from other communication apparatuses outside the communication apparatus and transmitting the signals to the processor or sending signals from the processor to other communication apparatuses outside the communication apparatus, and the processor implements the function modules of the method in any possible implementation of any one of the first aspect to the second aspect through a logic circuit or executes computer programs or instructions. Optionally, the communication apparatus further includes a memory for storing computer programs or instructions.

[0041] The fifth aspect provides a computer-readable storage medium storing computer programs or instructions, which, when executed by a processor, implement the method in any possible implementation of any one of the first aspect to the second aspect.

[0042] The sixth aspect provides a computer program product storing instructions, which, when read and executed by a computer, implement the method in any possible implementation of any one of the first aspect to the second aspect.

[0043] The seventh aspect provides a circuit for executing the method in any possible implementation of any one of the first aspect to the second aspect, which can include a chip circuit. Optionally, the circuit can be further coupled to a memory.

[0044] In an eighth aspect, a chip is provided, which includes a processor configured to implement a method in any possible implementation of the first aspect to the second aspect. Optionally, the chip further includes a memory, and the chip can be configured by the chip or include the chip and other discrete components.

[0045] In a ninth aspect, a communication apparatus is provided, which includes a processor configured to implement a method in any possible implementation of the first aspect to the second aspect by means of a logic circuit or by executing computer programs or instructions.

[0046] In a tenth aspect, a communication apparatus is provided, which includes units or modules for performing each step of the method in any possible implementation of the first aspect to the second aspect.

[0047] In an eleventh aspect, a communication system is also provided. The communication system includes a terminal device configured to implement the method in the first aspect and any possible implementation of the first aspect, and a network device configured to implement the method in the second aspect and any possible implementation of the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0048] FIG. 1 is a schematic diagram of a network device architecture according to an embodiment of the present application;

[0049] FIG. 2 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

[0050] FIG. 3 is a schematic diagram of carrier aggregation according to an embodiment of the present application;

[0051] FIG. 4 is a schematic diagram of a frequency band combination capability according to an embodiment of the present application;

[0052] FIG. 5 is a schematic diagram of a communication method according to an embodiment of the present application;

[0053] FIG. 6 is a schematic diagram of a frequency band combination capability according to an embodiment of the present application;

[0054] FIG. 7 is a schematic diagram of a frequency band combination capability according to an embodiment of the present application;

[0055] FIG. 8 is a schematic diagram of a frequency band combination capability according to an embodiment of the present application;

[0056] FIG. 9 is a schematic diagram of a frequency band combination capability according to an embodiment of the present application;

[0057] FIG. 10 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0058] FIG. 11 is a schematic diagram of a structure of a communication device according to an embodiment of the present application;

[0059] FIG. 12 is a schematic diagram of a structure of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The terms "first", "second" and corresponding terms of reference numbers in the present application are used to distinguish similar objects, not necessarily to describe a specific order or sequence. The method and device provided by the embodiments of the present application are based on the same or similar technical concepts. Since the principles of the method and device for solving problems are similar, the implementation of the device and the method can be mutually referred to, and the repeated parts will not be described.

[0061] The method provided by the embodiments of the present application can be applied to various mobile communication systems, for example, can be internet of things (IoT), narrow band internet of things (NB-IoT), can be a fourth generation (4th generation, 4G) communication system (such as long term evolution (long term evolution, LTE)), can also be a fifth generation (5th generation, 5G) communication system (such as 5G new radio (new radio, NR)), can also be a hybrid architecture of LTE and NR, can also be a new communication system in future communication development, etc. The communication system can also include a machine to machine (machine to machine, M2M) network, machine type communication (machine type communication, MTC) or other networks.

[0062] In the following, first, some terms in the embodiments of the present application are explained and described, so as to facilitate the understanding of those skilled in the art.

[0063] In embodiments of the present application, the network device can be a device in a wireless network, and can also be referred to as an access network device or a wireless access network device. For example, the network device can be a radio access network (RAN) node that accesses a terminal device to a wireless network. The network device includes but is not limited to: a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, an access network device in an open radio access network (O-RAN), a base station in a future mobile communication system, or an access node in a wireless fidelity (WiFi) system, etc.; or can be a module or unit that completes part of the function of the base station, for example, can be a central unit (CU), a distributed unit (DU), a central unit control plane (CU-CP) module, or a central unit user plane (CU-UP) module. The network device can be a macro base station, or a micro base station or an indoor station, or a relay node or a donor node, etc. The specific technology and specific device form of the network device adopted in the present application are not limited.

[0064] As shown in FIG. 1, in some implementations, a network device can include a centralized unit (CU) and a distributed unit (DU). The RAN device including a CU node and a DU node splits the protocol layers of a gNB in the NR system, with some protocol layer functions being centrally controlled at the CU and the rest or all of the protocol layer functions being distributed in the DU, with the CU centrally controlling the DU. Further, the CU can be further divided into a control plane (CU-CP) and a user plane (CU-UP). The CU-CP is responsible for control plane functions, mainly including radio resource control (RRC) and a packet data convergence protocol (PDCP) corresponding to the control plane (i.e., PDCP-C). The PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, data transmission, etc. The CU-UP is responsible for user plane functions, mainly including a service data adaptation protocol (SDAP) and a PDCP corresponding to the user plane (i.e., PDCP-U). The SDAP is mainly responsible for processing data of the core network and mapping a flow to a bearer. The PDCP-U is mainly responsible for encryption and decryption of the data plane, integrity protection, header compression, sequence number maintenance, data transmission, etc. The CU-CP and the CU-UP are connected through an El interface. The CU-CP represents the gNB to connect with the core network through an NG interface, and to connect with the DU through a control plane (i.e., Fl-C) and an Fl interface. The CU-UP connects with the DU through a user plane (i.e., Fl-U) and an Fl interface. Of course, there is also a possible implementation that the PDCP-C is also in the CU-UP.

[0065] It can be understood that the CU (including CU-CP or CU-UP) or DU can also have different names in different systems, but those skilled in the art can understand its meaning. For example, in an open radio access network (O-RAN) system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, and the CU-UP can also be referred to as an O-CU-UP. For the convenience of description, the CU, CU-CP, CU-UP and DU are taken as examples for description in this application. The network device can also include an active antenna unit (AAU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements the function of the RRC layer. The DU is responsible for processing the physical layer protocol and real-time service, and implements the function of the radio link control (RLC) layer, the media access control (MAC) layer and the physical (PHY) layer. In some deployments, the CU can also be divided into a centralized unit control plane (CU-CP) node and a centralized unit user plane (CU-UP) node. Among them, the CU-CP is responsible for the control plane function, and the CU-UP is responsible for the user plane function.

[0066] FIG. 2 shows an example diagram of an O-RAN system. It should be understood that the O-RAN system can also include other components in addition to the components shown in FIG. 2, which are not specifically limited here. As shown in FIG. 2, the network device can communicate with the core network (CN) through a backhaul link, and can communicate with the terminal device through an air interface. For example, the network device can include a baseband unit (BBU) and a radio unit (RU). The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul link. The RU can implement the functions of the lower physical layer (Lower PHY) and the radio frequency (RF). In some examples, the RU can be a transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Low-PHY can include part of the PHY processing, such as fast Fourier transform (FFT), inverse fast Fourier transform (IFFT), digital beamforming and filtering, etc. The BBU can communicate with the CN through the backhaul link, and the RU can communicate with at least one terminal device through the air interface. The BBU can communicate with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not co-located.

[0067] The hardware of the CU or the DU includes a chassis platform, a mainboard, peripherals, and cooling equipment. The mainboard contains a processing unit, a memory, internal input / output (I / O) interfaces, and external connection ports. The hardware accelerator design has an interface, and the hardware functional components include storage of software, hardware, and system debugging interfaces, and a board management controller.

[0068] A DU system is typically implemented using a multi-core processor and one or more hardware accelerators. Part of the DU protocol stack can be implemented in software running on the multi-core processor, compute-intensive L1 and L2 functions can be offloaded to hardware accelerators based on field programmable gate array (FPGA) / graphics processing unit (GPU); or all L1 functions are offloaded to hardware accelerators based on FPGA / GPU, while other protocol stack contents are implemented in software running on the processor; or all protocol stack is implemented in software running on the processor. The hardware accelerators are supported to interconnect with x86 or non-x86 processors, and the accelerators have a multi-channel interface pointing to a central processing unit (CPU) and are externally connected through a gigabit Ethernet connection.

[0069] An RU generally includes three parts: an O-RAN processing unit (OPU), a digital processing unit (DPU), and an RF processing unit. Among them, the OPU receives an enhanced universal public radio interface frame from the O-RAN front haul, and performs the front haul interface, the bottommost L1 (encoding, scrambling, modulation, layer mapping, precoding), synchronization, beamforming, and resource unit mapping. The OPU can be implemented as a CPU, FPGA, or application specific integrated circuit (ASIC). The DPU performs operations such as synchronization, digital down conversion, digital up conversion, etc., to improve power amplifier efficiency by reducing the peak to average power ratio (PAPR) of the RF front end; the DPU can be implemented as an FPGA or an ASIC. The RF processing unit includes a transceiver module, an up / down converter, a power amplifier, a low noise amplifier, a filter. All conversions between the analog domain and the digital domain are performed within the transceiver module. Note that the physical and logical partitions within the RF processing unit do not require specific boundaries.

[0070] The above is only an example and does not represent a limitation on the CU, DU, and RU.

[0071] The terminal device involved in the embodiments of the present application can be a wireless terminal device capable of receiving network device scheduling and indication information. The terminal device can be referred to as a terminal device or a terminal, and can also be referred to as a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc. The terminal device can be a device including a wireless communication function (providing voice / data connectivity to a user). For example, a handheld device with a wireless connection function, or a vehicle-mounted device, a vehicle-mounted module, etc. At present, some examples of terminal devices are: a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, etc. The terminal device can be widely applied to various scenarios, such as device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, automatic driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, a sensor, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0072] In the following, some terms in the embodiments of the present application are explained and described, so as to facilitate understanding by those skilled in the art.

[0073] Transmitter (TX):

[0074] Radio frequency (RF) transmit channel, short for transmit channel, is a physical concept. The transmit channel can receive a baseband signal from a baseband chip, perform radio frequency processing (such as up-conversion, amplification and filtering) on the baseband signal to obtain a radio frequency signal, and finally radiate the radio frequency signal into space through an antenna. Specifically, the transmit channel can include one or more of an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer, a local oscillator (LO), a filter and the like. These electronic devices can be integrated into one or more chips as needed. The antenna can also be considered as part of the transmit channel.

[0075] In the embodiments of the present application, the transmit channel can also be replaced by an antenna, a radio frequency, a radio frequency chain, a transmission port, a number of radio frequency chains, a number of transmission layers, a maximum number of transmission layers, a maximum number of transmission supported, a receive channel or any combination thereof.

[0076] Carrier aggregation (CA) technology:

[0077] The carrier aggregation technology refers to providing services for a terminal device through multiple carriers at the same time. By aggregating multiple component carriers (CCs), the communication bandwidth can be improved and the peak rate can be improved. In the present application, the component carrier can also be referred to as a carrier. Each carrier can have at least one serving cell component carrier for terminal device operation. In the carrier aggregation technology, there is usually one carrier as a primary cell (PCell) and other serving cells as secondary cells (Scells). The secondary cell can be activated or deactivated during use. For example, if there is no data transmission for a period of time, the network can deactivate the secondary cell, and the secondary cell can be activated again when data transmission is required in the future.

[0078] As shown in FIG. 3, there are three types of carrier aggregation: intra-band contiguous CA, intra-band non-contiguous CA and inter-band CA. Among them, the frequency band (frequency band or band) can also be referred to as the frequency band, and the frequency band combination can also be referred to as the frequency band combination.

[0079] Intra-band contiguous CA refers to the aggregation of multiple contiguous carriers in one frequency band. For example, as shown in the figure, the carrier aggregation of two contiguous carriers (i.e., carrier 1 and carrier 2) in frequency band A is intra-band contiguous CA.

[0080] Intra-band non-contiguous CA refers to the aggregation of multiple non-contiguous carriers in one frequency band. For example, as shown in the figure, the carrier aggregation of two non-contiguous carriers (i.e., carrier 1 and carrier 3) in frequency band A is intra-band non-contiguous CA.

[0081] Inter-band CA refers to the aggregation of multiple carriers in multiple frequency bands. For example, as shown in the figure, the carrier aggregation of one carrier (i.e., carrier 1) in frequency band A and one carrier (i.e., carrier 4) in frequency band B is inter-band CA.

[0082] The terminal device can report the capability information of the terminal device to the network device, and the capability information can indicate the capability of the terminal device. For example, the capability information can include the following parameters: frequency bands supported by the terminal device, frequency band combinations, maximum channel bandwidth capability of the carrier, number of multiple input multiple output (MIMO) layers, modulation order, etc.

[0083] In the 5G system, the capability of the terminal device can be divided into several levels. The level structure represents the data structure of the capability information, and the capability level of the terminal device can include:

[0084] - UE level capability (also referred to as terminal device level capability or per UE capability): applicable to all frequency bands and frequency band combinations. The per UE capability includes hardware version information and / or software version information of the terminal device, PDCP layer capability, etc.

[0085] - Band level capability (also referred to as band level capability or per band capability): usually related to the radio frequency capability of the terminal device. The per band capability can include the extended cyclic prefix (CP) of the frequency band, the modulation mode, the power level, the MIMO capability, etc. The frequency bands supported by the terminal device can be represented by a data structure of a frequency band list.

[0086] - Band combination (BC) level capability (may also be referred to as per BC capability), which is a capability related to a band combination, and the band combination is mainly related to the capability of carrier aggregation and dual connection (DC) supported by the terminal device. One band combination can be composed of one or more bands supported by the terminal device and configured for carrier aggregation or dual connection, and the bands include carriers. That is, for one band combination reported by the terminal device, the network device can configure the carriers included in the bands in the band combination to the terminal device for carrier aggregation or dual connection transmission. In addition, from the capability signaling structure, the capability of a single band or a single carrier can also be reported through the signaling structure of the band combination. The band combinations supported by the terminal device are usually related to the radio frequency capability and baseband capability of the terminal device.

[0087] As shown in FIG. 4, one band combination can be associated with one band list, and the band list is used to indicate the bands included in the band combination. In the figure, the band combination includes band A, band B and band x as an example. One band combination is also associated with one feature set combination (FSC), and the band combination level capability (per BC capability).

[0088] Among them, the FSC is used to indicate the feature set (FS) of each band included in the band combination and the feature set per CC (FSPC) of each carrier on each band. Among them, the FS is used to indicate the per band per band (per BC per band) level capability; and the FSPC is used to indicate the per carrier (per CC) level capability, that is, the capability of the component carrier on the band in the band combination.

[0089] For example, the FSC can indicate the FS corresponding to band A, band B and band x respectively. Taking the FS corresponding to band A as an example, the FS can indicate the band level capability of band A, and the FS can also be associated with a feature set per CC list, which includes the per carrier (per CC) level capability of each carrier included in the band. For example, taking band A including CC1, CC2 and CCx as an example in the figure, the feature set per CC list associated with band A includes the FSPC of CC1, the FSPC of CC2 and the FSPC of CCx. Among them, the FSPC is used to indicate the subcarrier spacing (SCS) supported by one carrier, the maximum number of multiple-input multiple-output (MIMO) layers, the maximum carrier bandwidth, etc.

[0090] The per BC capability can indicate a bandwidth combination set capability of the frequency band combination, a power class capability, and the like.

[0091] When the terminal device reports the capability information of the frequency band combination, the capability information indicates the identity of the FSC, the identity of the FS, and the identity of the FSPC of the frequency band combination. By reporting the identities, the overhead of the capability information can be reduced. In addition, the feature set of each frequency band in the frequency band combination is divided into a downlink feature set and an uplink feature set, which are represented by FeatureSetDownlink and FeatureSetUplink, respectively. The uplink feature set and the downlink feature set of each frequency band always appear in pairs.

[0092] For one frequency band combination, the terminal device can also indicate the information of the frequency bands included in the frequency band combination. Specifically, the terminal device can indicate the identity of the frequency band and the CA bandwidth class of the frequency band through the capability information. The CA bandwidth class is used to indicate the maximum number of continuously aggregated carriers and the aggregated transmission bandwidth. For example, as shown in Table 1, for the frequency range 1 (FR1), the correspondence between the CA bandwidth class and the number of carriers and the aggregated transmission bandwidth. The frequency range of FR1 is 450MHz-6GHz.

[0093] Table 1

[0094] In Table 1, the CA bandwidth class A indicates that the maximum number of continuously aggregated carriers is 1, and the aggregated bandwidth BW Channel is less than the maximum channel bandwidth BW Channel，max , BW Channel，max is a protocol preset value; the CA bandwidth class C indicates that the number of continuously aggregated carriers is 2, and the aggregated bandwidth is greater than 100MHz and less than 2 times the maximum channel bandwidth. Other cases are similar and will not be described in detail.

[0095] For inter-band CA, each band corresponds to one CA bandwidth class for a combination of multiple bands; for intra-band contiguous CA, each band corresponds to one CA bandwidth class; for intra-band non-contiguous CA, one band can contain 2 or more sub-blocks, the sub-blocks in the same band are non-contiguous, each sub-block can contain one carrier or multiple contiguous carriers, and each sub-block corresponds to one CA bandwidth class. For example, combination CA_n7(2A) indicates that there are 2 non-contiguous single carriers in band n7; combination CA_n48(3A) indicates that there are 3 non-contiguous single carriers in band n48; and combination CA_n41(C) indicates that there are 2 contiguous aggregated carriers in band n41.

[0096] From the perspective of a terminal device, for intra-band contiguous carrier aggregation, different carriers can completely share one radio frequency chain; for inter-band carrier aggregation, different carriers use completely independent radio frequency chains; and for intra-band non-contiguous carrier aggregation, different carriers usually use partially independent radio frequency chains, or in other words, to some extent, have independent radio frequency chains (for example, use independent filters).

[0097] For intra-band non-contiguous carrier aggregation, under certain conditions, such as when the non-contiguous carriers in the band meet the co-site condition, the terminal device can also share one radio frequency chain to implement non-contiguous carrier aggregation. In this way, the terminal device can release one radio frequency chain resource for other carrier communication. However, when the terminal device indicates the carrier aggregation capability through the existing band combination, it does not indicate the conditions required to support the band combination. For a band combination supported by the terminal device, the network device can consider that the terminal device supports the band combination under any condition. Therefore, how to indicate to the network device the band combinations that the terminal device can support under certain conditions is a problem to be solved.

[0098] One possible method is that the terminal device reports such a frequency band combination satisfying a specific condition to the network device in the capability information. However, according to the existing frequency band combination reporting manner, backward compatibility problems will be caused, and interoperability problems will occur between the new terminal device and the old network device (i.e., the existing network device, or the network device already existing in the current communication network, or the network device not supporting the method provided in the present application). Specifically, assuming that the terminal device reports a frequency band combination, but the carrier aggregation capability expressed by the frequency band combination needs to satisfy a specific deployment condition for the network device, and the old network device does not know the condition required for configuring the frequency band combination, the old network device can configure the frequency band combination without satisfying the required condition, and then the terminal device considers that it cannot comply with the configuration of the network to communicate, resulting in communication failure between the terminal device and the network device.

[0099] Therefore, the present application provides a method, and designs a capability reporting method, so that the terminal device can report the supported carrier aggregation capability under the condition of satisfying a specific condition. The method provided in the present application can avoid backward compatibility problems and ensure normal interoperability between the terminal device and the network device. Details will be described below.

[0100] The network architecture and service scenario described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be known by those skilled in the art that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0101] It can be understood that the present application does not particularly limit the specific structure of the execution subject of the method provided in the embodiments of the present application, and the method can be applied to a network device or a terminal device, as long as the method can be used to communicate according to the method provided in the embodiments of the present application by running a program in which the code of the method provided in the embodiments of the present application is recorded. Hereinafter, the interaction between the network device and the terminal device will be taken as an example for description.

[0102] As shown in FIG. 5, it is a flowchart of a communication method provided in the embodiments of the present application. The method takes the interaction between the network device and the terminal device as an example, and the method can also be applied to the interaction between other devices, which is not limited in the present application.

[0103] Step 501: The network device sends a capability query message; the capability query message is used to query capability information.

[0104] Correspondingly, the terminal device receives the capability query message.

[0105] The capability enquiry message can also be referred to as a UECapabilityEnquiry, and the name of the capability enquiry message is not limited in the application.

[0106] The application does not limit how the network device specifically sends the capability enquiry message, and how the terminal device specifically receives the capability enquiry message, and does not repeat the details here.

[0107] Optionally, the capability enquiry message includes first enquiry information, and the first enquiry information indicates that the terminal device reports the carrier aggregation capability under the first condition. The first enquiry information can also be understood as first capability filtering information, which is used to request filtering of the capability information of the terminal device.

[0108] The first enquiry information indicates that the terminal device reports the carrier aggregation capability under the first condition, which can also be replaced by requesting the terminal device to report the carrier aggregation capability under the first condition, or allowing the terminal device to report the carrier aggregation capability under the first condition.

[0109] The first enquiry information can be 1 bit. If the capability enquiry message includes the first enquiry information, it indicates that the terminal device reports the carrier aggregation capability under the first condition; if the capability enquiry message does not include the first enquiry information (or the first enquiry information is default), the terminal device does not need to report the carrier aggregation capability under the first condition.

[0110] In one possible implementation, the carrier aggregation capability under the first condition here refers to the carrier aggregation capability supported by the terminal under the first condition, which is different from the carrier aggregation capability supported by the terminal under the condition that the first condition is not met. That is, the first enquiry information does not affect the terminal device to report the carrier aggregation capability under the condition that the first condition is not met.

[0111] Optionally, the first enquiry information can also be used to indicate frequency band information, which is used to indicate that the terminal device reports the carrier aggregation capability under the first condition on the frequency band indicated in the frequency band information. The frequency band of the terminal device reporting the carrier aggregation capability under the first condition is included in the frequency band indicated by the network device in the first enquiry information. For example, if the frequency band information includes a first frequency band, it indicates that the terminal device reports the carrier aggregation capability under the first condition on the first frequency band. If the frequency band information does not include a second frequency band, the terminal device does not need to report the carrier aggregation capability under the first condition on the second frequency band.

[0112] Step 502: The terminal device sends the capability information.

[0113] Correspondingly, the network device receives the capability information.

[0114] The capability information can indicate a frequency band combination list supported by the terminal device, and the frequency band combination list includes at least one frequency band combination supported by the terminal device. The following describes an example in which the capability information indicates that the terminal device supports a first frequency band combination, and other cases are not described again.

[0115] In this application, the first frequency band combination can include one or more frequency bands, for example, the first frequency band combination includes two frequency bands, which are a first frequency band and a second frequency band.

[0116] The capability information includes first information; the first information is used to indicate that the first frequency band in the first frequency band combination supports M carriers, and M is an integer greater than 0. The first frequency band supporting M carriers can mean that the terminal device supports carrier aggregation of M continuous carriers in the first frequency band.

[0117] Optionally, the first information is also used to indicate an aggregated channel bandwidth corresponding to the M carriers of the first frequency band in the first frequency band combination.

[0118] For example, the first information is used to indicate that the first frequency band supports a first carrier aggregation bandwidth level, and the first carrier aggregation bandwidth level corresponds to the M carriers, and the M carriers are continuous carriers.

[0119] The above first frequency band can be indicated by a band entry. The first frequency band combination can include one or more band entries.

[0120] The capability information further includes second information. In an implementation, the second information is used to indicate that the first frequency band in the first frequency band combination supports N carriers under a first condition, and N is an integer greater than 0. The N carriers include non-continuous carriers, or the N carriers are non-continuous N carriers. Optionally, N is greater than M. The first frequency band supporting N carriers can mean that the terminal device supports carrier aggregation of N non-continuous carriers in the first frequency band.

[0121] In this implementation, the second information can have multiple implementation manners, and the following gives several examples.

[0122] Example one, the second information is used to indicate that the first frequency band supports or corresponds to X second carrier aggregation bandwidth levels under the first condition; the X second carrier aggregation bandwidth levels correspond to the N carriers, the second carrier aggregation bandwidth level corresponds to one carrier or multiple continuous carriers, and X is an integer greater than 0.

[0123] For example, the terminal device supports the frequency band combination CA_n7(A)-n25(A) including the frequency band n7 and the frequency band n25. For the frequency band n7, the first information corresponding to the frequency band n7 can indicate that the CA bandwidth level supported on the frequency band n7 is A; for the frequency band n25, the first information corresponding to the frequency band n25 can indicate that the CA bandwidth level supported on the frequency band n25 is A, that is, there is one carrier on the frequency band n7 and one carrier on the frequency band n25 respectively. In addition, when the terminal device can support two non-continuous carriers aggregation on the frequency band n7 under the first condition, that is, the terminal device supports the frequency band combination CA_n7(2A)-n25(A) under the first condition, for the frequency band n7, the second information corresponding to the frequency band n7 indicates that two CA bandwidth levels are supported on the frequency band n7 under the first condition, and both of the two CA bandwidth levels are A.

[0124] For example, when the terminal device can support three non-continuous carriers aggregation on the frequency band n7 under the first condition, that is, the terminal device supports the frequency band combination CA_n7(3A)-n25(A) under the first condition, the second information corresponding to the frequency band n7 indicates that three CA bandwidth levels A are supported on the frequency band n7 under the first condition, and all of the three CA bandwidth levels are A.

[0125] The second carrier aggregation bandwidth level corresponds to one carrier or a plurality of continuous carriers, and can also be understood as that the second carrier aggregation bandwidth level corresponds to one sub-block; a plurality of second carrier aggregation bandwidth levels correspond to a plurality of different sub-blocks.

[0126] For example, the terminal device supports the frequency band combination CA_n41(A)-n25(A); the terminal device supports the frequency band combination CA_n41(C-A)-n25(A) under the first condition, that is, there are two sub-blocks on the frequency band n41, one sub-block includes two continuous carriers (that is, the CA bandwidth level is C), and the other sub-block includes one carrier (that is, the CA bandwidth level is A). In one possible example, the terminal device can indicate that the CA bandwidth level capability supported on the frequency band n41 is A through the first information corresponding to the frequency band n41; and indicate that two CA bandwidth levels are supported on the frequency band n41 under the first condition through the second information corresponding to the frequency band n41, that is, C and A, and the carriers corresponding to the two CA bandwidth levels are non-continuous.

[0127] Example two, the second information is used to indicate the number N of non-continuous carriers supported on the first frequency band under the first condition.

[0128] In this example, the terminal device supports non-contiguous N single-carrier carrier aggregation in the first frequency band under the first condition, or each sub-block supported in the first frequency band under the first condition is carrier aggregation bandwidth level A, and the second information indicates the number N of non-contiguous carriers, or the number N of carrier aggregation bandwidth levels A, that is, the number of non-contiguous carriers is equal to the number of carrier aggregation bandwidth levels A.

[0129] In Example 3, the second information has a preset value, indicating that the first frequency band supports N carriers under the first condition.

[0130] For example, the second information includes 1 bit. The first frequency band in the first frequency band combination contains or carries the second information, or the 1 bit included in the second information has a preset value, indicating that the first frequency band supports N carriers under the first condition. N can also be a preset value, such as N = 2.

[0131] In another implementation, the second information is used to indicate that the first frequency band in the first frequency band combination further supports or corresponds to X carriers under the first condition, X being an integer greater than 0.

[0132] In this implementation, the X carriers indicated by the second information are carriers additionally supported by the terminal device on the basis of the M carriers indicated by the first information, and the X carriers and the M carriers are non-contiguous. It can be understood that the number of carriers supported by the terminal device in the first frequency band in the first frequency band combination under the first condition is the sum of M and N, that is, the terminal device supports a total of X+M carriers in the first frequency band in the first frequency band combination under the first condition, for example, N = X+M.

[0133] For example, the second information is used to indicate that Y second carrier aggregation bandwidth levels are additionally supported in the first frequency band under the first condition; the Y second carrier aggregation bandwidth levels correspond to X carriers, the second carrier aggregation bandwidth level corresponds to one carrier or a plurality of contiguous carriers, and Y is an integer greater than 0.

[0134] In this implementation, the second information only needs to indicate the carriers additionally supported by the terminal device on the basis of the M carriers indicated by the first information, which can reduce the overhead of the second information.

[0135] For example, the terminal device supports a frequency band combination CA_n7(A)-n25(A) including a frequency band n7 and a frequency band n25. For the frequency band n7, the first information corresponding to the frequency band n7 can indicate that a CA bandwidth level supported in the frequency band n7 is A. In addition, when the terminal device can support two non-continuous carrier aggregation in the frequency band n7 under a first condition, i.e., the terminal device supports a frequency band combination CA_n7(2A)-n25(A) under the first condition, for the frequency band n7, the second information corresponding to the frequency band n7 indicates that one CA bandwidth level A is further supported in the frequency band n7 under the first condition, and the CA bandwidth level is A.

[0136] For example, the terminal device supports a frequency band combination CA_n7(3A)-n25(A) under the first condition, and the second information corresponding to the frequency band n7 indicates that two CA bandwidth levels A are further supported in the frequency band n7 under the first condition, and both of the two CA bandwidth levels are A.

[0137] Optionally, the second information can also be used to indicate an aggregated channel bandwidth of N carriers supported in the first frequency band in the first frequency band combination under the first condition.

[0138] Optionally, the first information can also indicate that the transmission direction of the M carriers is uplink or downlink, or in other words, the first information can also indicate that the M carriers are downlink carriers or uplink carriers. The second information can also indicate that the transmission direction of the N carriers is uplink or downlink, or in other words, the second information can also indicate that the N carriers are downlink carriers or uplink carriers. For example, the first information is used to indicate that the first frequency band supports M uplink or downlink carriers, and the second information is used to indicate that the first frequency band supports N uplink or downlink carriers under the first condition.

[0139] For example, taking the M carriers and the N carriers as uplink carriers, the capability information can further include at least one of fifth information and sixth information, the first information is used to indicate that the first frequency band supports M uplink carriers, and the second information is used to indicate that the first frequency band supports N uplink carriers under the first condition; the fifth information is used to indicate that the first frequency band supports M2 downlink carriers, and the sixth information can be used to indicate that the first frequency band supports N2 downlink carriers under the first condition, and M2 and N2 are integers greater than 0. Taking the carrier aggregation bandwidth level as an example, the first information is used to indicate that the first frequency band supports a first uplink carrier aggregation bandwidth level, and the second information can be used to indicate that the first frequency band supports X second uplink carrier aggregation bandwidth levels under the first condition; the fifth information is used to indicate that the first frequency band supports a third downlink carrier aggregation bandwidth level, and the sixth information is used to indicate that the first frequency band supports X2 fourth downlink carrier aggregation bandwidth levels under the first condition, and X2 is an integer greater than 0. The X second uplink carrier aggregation bandwidth levels correspond to the N uplink carriers, and the X2 fourth downlink carrier aggregation bandwidth levels correspond to the N2 uplink carriers.

[0140] Exemplarily, the capability information can further comprise at least one of the fifth information and the sixth information, the first information is used to indicate that M downlink carriers are supported in the first frequency band, and the second information is used to indicate that N downlink carriers are supported in the first frequency band under the first condition; the fifth information is used to indicate that M2 uplink carriers are supported in the first frequency band, and the sixth information is used to indicate that P uplink carriers are supported in the first frequency band in the first frequency band combination under the first condition. Exemplarily, the first information is used to indicate that a first carrier aggregation bandwidth level is supported in the first frequency band, and the second information is used to indicate that X downlink second carrier aggregation bandwidth levels are supported in the first frequency band under the first condition; the fifth information is used to indicate that a third carrier aggregation bandwidth level is supported in the first frequency band, and the sixth information is used to indicate that X2 uplink second carrier aggregation bandwidth levels are supported in the first frequency band under the first condition. The X downlink second carrier aggregation bandwidth levels correspond to the N downlink carriers, and the X2 uplink second carrier aggregation bandwidth levels correspond to N2 uplink carriers.

[0141] Exemplarily, the second information is used to indicate that the number N of uplink or downlink non-contiguous carriers supported in the first frequency band under the first condition. Exemplarily, the second information is used to indicate that the number N of uplink non-contiguous carriers supported in the first frequency band under the first condition, and the capability information can further comprise the sixth information, the sixth information is used to indicate that the number N2 of downlink non-contiguous carriers supported in the first frequency band under the first condition.

[0142] It can be understood that the uplink carrier aggregation bandwidth level supported by the terminal device in the first frequency band under the first condition and the downlink carrier aggregation bandwidth level supported by the terminal device in the first frequency band under the first condition can be the same or different.

[0143] It can be understood that the uplink carrier aggregation bandwidth level supported by the terminal device in the first frequency band under the first condition and the downlink carrier aggregation bandwidth level supported by the terminal device in the first frequency band under the first condition can be the same or different.

[0143] Exemplarily, the terminal device supports a higher uplink carrier aggregation capability but does not support a higher downlink carrier aggregation capability in the first frequency band of the first frequency band combination under the first condition, and the capability information comprises the first information, the second information and the fifth information. Exemplarily, the terminal device supports a higher downlink carrier aggregation capability but does not support a higher uplink carrier aggregation capability in the first frequency band of the first frequency band combination under the first condition, and the capability information comprises the first information, the fifth information and the sixth information.

[0144] For example, the terminal device supports the frequency band combination of DL CA_n7(A)-n25(A) in the down link (DL) and the frequency band combination of UL CA_n7(A) in the up link (UL), and the terminal device supports the frequency band combination of DL CA_n7(2A)-n25(A) in the first frequency band in the first condition and the frequency band combination of UL CA_n7(A) in the first frequency band in the first condition. Then, the second information corresponding to the frequency band n7 can only indicate that more non-continuous aggregated carriers are supported in the first frequency band in the down link in the first condition, for example, the second information indicates that 2 CA bandwidth classes A are supported in the frequency band n7 in the down link in the first condition, without indicating the CA bandwidth class supported in the frequency band n7 in the down link in the first condition.

[0145] In a possible implementation, the capability information includes a band list associated with the first frequency band combination, the band list indicating the frequency bands included in the first frequency band combination, and the capability of each frequency band in the band list can be indicated by a band parameter information element, that is, the first information and the second information are located in the band parameter information element corresponding to the first frequency band.

[0146] For example, the band combination information associated with the first frequency band combination in the capability information can be as follows.

[0147] In the formula, bandlist indicates the band list associated with the first frequency band combination. featureSetCombination indicates the feature set combination (FSC) associated with the first frequency band combination.

[0148] Taking the first frequency band as an NR frequency band as an example, the band parameter (BandParameters) information element corresponding to the first frequency band can be as follows.

[0149] In the formula, bandNR (frequency band NR) corresponds to FreqBandIndicatorNR (frequency band indicator NR), which can indicate the identity or serial number of the first frequency band. The first information can be ca-BandwidthClassDL-NR and / or ca-BandwidthClassUL-NR, wherein ca-BandwidthClassDL-NR (CA bandwidth class downlink NR) is used to indicate the downlink CA bandwidth class supported in the first frequency band, and ca-BandwidthClassUL-NR (CA bandwidth class uplink NR) is used to indicate the uplink CA bandwidth class supported in the first frequency band.

[0150] In the present application, the second information can also be carried in a BandParameters information element. For example, the second information can refer to the following.

[0151] The second information can be ca-BandwidthClassforNonDownLink (CA bandwidth class for non-downlink) and / or ca-BandwidthClassforNonUpLink (CA bandwidth class for non-uplink). The ca-BandwidthClassforNonDownLink is used to indicate X second carrier aggregation bandwidth classes supported by the first frequency band for uplink under the first condition, and the ca-BandwidthClassforNonUpLink is used to indicate Q second carrier aggregation bandwidth classes supported by the first frequency band for downlink under the first condition. The maximum values of X and Q can be preset, for example, the maximum values of X and Q are 8, i.e., the second information indicates at most 8 second carrier aggregation bandwidth classes for uplink and / or 8 second carrier aggregation bandwidth classes for downlink. The present application does not limit the maximum values of X and Q. It can be understood that the information element name of the second information in the present application is only an example.

[0152] For another example, the second information can refer to the following.

[0153] The second information can be nrofNoncontiquousDownLinkCC (NR number of non-contiguous downlink CCs) and / or nrofNoncontiquousUpLinkCC (NR number of non-contiguous uplink CCs). The nrofNoncontiquousDownLinkCC is used to indicate the number N of non-contiguous downlink CCs supported by the first frequency band under the first condition, and the nrofNoncontiquousUpLinkCC is used to indicate the number P of non-contiguous uplink CCs supported by the first frequency band under the first condition. The maximum values of N and P can be preset, for example, the maximum values of N and P are 8, 16, or 32, etc., which are not limited in the present application.

[0154] The above is only an example, and the second information can also have other forms, which are not limited in the present application.

[0155] In the present application, the first condition is not limited, for example, the first condition includes at least one of the following:

[0156] The carrier aggregation bandwidth of the N carriers is less than or equal to a first threshold;

[0157] A maximum receive timing difference (MRTD) of the N carriers is less than or equal to a second threshold value;

[0158] A power spectral density (PSD) difference of the N carriers is less than or equal to a third threshold value;

[0159] The N carriers are co-sited carriers;

[0160] The N carriers correspond to a same radio frequency link.

[0161] The carrier aggregation bandwidth of the N carriers can be understood as a bandwidth range in which the N carriers are located within the first threshold value, or a total bandwidth of the N carriers in carrier aggregation, and when the N carriers include non-continuous carriers, the total bandwidth includes a carrier bandwidth interval of the non-continuous carriers. For example, the first threshold value is 100 MHz, and the first condition includes a bandwidth of 2 carriers in carrier aggregation being less than or equal to 100 MHz. Then, the 2 carriers are located within the bandwidth of 100 MHz, for example, a bandwidth of carrier 1 is 40 MHz, a bandwidth of carrier 2 is 20 MHz, and the 2 carriers are non-continuous, and a carrier bandwidth interval is 10 MHz, and a total bandwidth range of the 2 carriers is 90 MHz, which is less than 100 MHz, and thus the first condition is satisfied. For another example, a bandwidth of carrier 1 is 40 MHz, a bandwidth of carrier 2 is 30 MHz, and the 2 carriers are non-continuous, and a carrier bandwidth interval is 35 MHz, and a total bandwidth range of the 2 carriers is 105 MHz, which is greater than 100 MHz, and thus the first condition is not satisfied.

[0162] The above is only an example, and the first condition can include other contents, which are not limited in the present application.

[0163] In the present application, when the first frequency band supports M carriers, a first frequency band combination including the first frequency band can be considered as a low-order combination, and when the first frequency band supports N carriers, a first frequency band combination including the first frequency band can be considered as a high-order combination. The high-order combination and the low-order combination can be considered as two frequency band combinations, and the FSC associated with the high-order combination and the FSC associated with the low-order combination can be the same or different. It can be understood that the FS of the first frequency band in the high-order combination and the FSPC of each carrier included in the first frequency band are the same as the FS of the first frequency band in the low-order combination and the FSPC of each carrier included in the first frequency band. The frequency band level capability associated with the high-order combination and the frequency band level capability associated with the low-order combination can be the same or different.

[0164] For example, the terminal device supports a frequency band combination CA_n7(A)-n25(A) including a frequency band n7 and a frequency band n25. The frequency band combination is associated with an FSC-1 including an FS corresponding to the frequency band n7 and an FS corresponding to the frequency band n25. The FSC-1 is a capability of the terminal device supporting the frequency band combination under the first frequency band combination, which can be understood as the FSC-1 being a capability of the first frequency band combination under a low-order combination. The FS of the frequency band n7 and the FS of the frequency band n25 each include an FSPC, which is a single-carrier carrier level capability corresponding to the CA bandwidth level A.

[0165] If the terminal device can support the frequency band combination CA_n7(2A)-n25(A) under the first condition, in this case, the terminal device supports the same FSC (both FSC-1) on CA_n7(2A)-n25(A) and CA_n7(A)-n25(A), that is, the FS corresponding to the frequency band n7 under the high-order combination is the same as the FS corresponding to the frequency band n7 under the low-order combination, and the FSPC capabilities of the two single carriers on the frequency band n7 under the high-order combination are also the same, both of which are the same as the FSPC included in the FS of the frequency band n7 under the low-order combination.

[0166] Through the method provided in the present application, the capability information of the terminal device includes first information and second information of the first frequency band, and the first information and the second information respectively represent the carrier aggregation capability of the terminal device on the first frequency band under different conditions. Specifically, in the case where the first condition is not met, the first information indicates that M carriers are supported on the first frequency band, so that the network device can schedule resources for the terminal device according to the first information, for example, scheduling the terminal device on the M carriers indicated by the first information. In the case where the first condition is met, the second information indicates that N carriers are supported on the first frequency band, so that the network device can schedule resources for the terminal device according to the second information, for example, scheduling the terminal device on the N carriers indicated by the second information. In this way, the carrier aggregation capability of the terminal device can be flexibly indicated, so that the network device can schedule resources according to the carrier aggregation capability of the terminal device, improve the communication efficiency, and also ensure that the scheduled resources will not exceed the capability of the terminal device. In addition, for old network devices, for example, network devices that do not support the second information, the second information can be ignored, and resources can be scheduled for the terminal device only according to the first information. For new network devices, for example, network devices that support the second information, resources can be scheduled for the terminal device according to the first information or the second information, realizing backward compatibility of the system and improving the system compatibility.

[0167] In the present application, the capability information can also indicate the frequency band level capability of the first frequency band and the carrier level capability of each carrier included in the first frequency band. For example, the frequency band level capability of the first frequency band can be the first FS of the first frequency band. The frequency band level capability of the first frequency band can indicate at least one of the uplink transmission capability and the downlink transmission capability of the terminal device in the first frequency band. The frequency band level capability can include supported sounding reference signal (SRS) resources and physical downlink control channel (PDCCH) demodulation capability, etc.

[0168] The carrier level capability of one carrier can indicate at least one of the downlink transmission capability and the uplink transmission capability of the terminal device in the carrier. For example, the carrier level capability can be the FSPC or a carrier level characteristic set. The carrier level capability can indicate the subcarrier spacing (SCS), the maximum number of multiple-input multiple-output (MIMO) layers, the maximum carrier bandwidth, etc. of the terminal device in the carrier corresponding to the carrier level characteristic set.

[0169] The first FS of the first frequency band under the first condition and the first FS of the first frequency band under the first condition can be the same or different. In one implementation, the frequency band level capability indicated by the first FS of the first frequency band under the first condition and the frequency band level capability indicated by the first FS of the first frequency band under the first condition can be the same, but the carrier level capability indicated by the first FS of the first frequency band under the first condition and the carrier level capability indicated by the first FS of the first frequency band under the first condition can be different. Therefore, in the present application, the capability information can also indicate the carrier level capability supported by the first frequency band under the first condition. Examples are given below.

[0170] In one implementation, the capability information further includes third information and fourth information. For example, the capability information includes the first FS of the first frequency band, and the third information and the fourth information can be located in the first FS of the first frequency band.

[0171] The third information is used to indicate the carrier level capability of the M carriers supported by the first frequency band.

[0172] For the fourth information, two implementations can be included. Implementation one, the fourth information is used to indicate the carrier level capability of the N-M carriers in the N carriers supported by the first frequency band under the first condition.

[0173] In the implementation, the fourth information indicates the carrier-level capability of the N-M carriers, which can be understood as the fourth information being used to indicate the N-M carrier-level capabilities supported by the terminal device in the first frequency band under the first condition. The N-M carrier-level capabilities are carrier-level capabilities additionally supported by the terminal device on the basis of the M carrier-level capabilities indicated by the third information. It can be understood that the number of carrier-level capabilities supported by the terminal device in the first frequency band under the first condition is the sum of the M carrier-level capabilities indicated by the third information and the N-M carrier-level capabilities indicated by the fourth information, that is, the terminal device supports N carrier-level capabilities in the first frequency band under the first condition.

[0174] In the implementation, the carrier-level capability of the first carrier in the N carriers supported by the terminal device in the first frequency band under the first condition can be one of the N-M carrier-level capabilities indicated by the fourth information or one of the M carrier-level capabilities indicated by the third information.

[0175] In the implementation, the carrier-level capability of the second carrier in the M carriers supported by the terminal device in the first frequency band under the condition that the first condition is not met can be one of the M carrier-level capabilities indicated by the third information.

[0176] In the implementation, the fourth information is used to indicate the carrier-level capability of the N carriers supported by the terminal device in the first frequency band under the first condition.

[0177] In the implementation, the fourth information indicates the carrier-level capability of the N carriers, which can be understood as the fourth information being used to indicate the N carrier-level capabilities supported by the terminal device in the first frequency band under the first condition. The N carrier-level capabilities indicated by the fourth information can or can not have the same carrier-level capability as the M carrier-level capabilities indicated by the third information, which is not limited in the present application.

[0178] In the implementation, the carrier-level capability of the first carrier in the N carriers supported by the terminal device in the first frequency band under the first condition can be one of the N carrier-level capability sets indicated by the fourth information. The M carrier-level capabilities indicated by the third information are independent of the N carriers indicated by the second information.

[0179] In the implementation, the carrier-level capability of the second carrier in the M carriers supported by the terminal device in the first frequency band under the condition that the first condition is not met can be one of the M carrier-level capabilities indicated by the third information.

[0180] For example, as shown in FIG. 6, the capability information indicates a frequency band list of a first frequency band combination, an FSC, and a frequency band combination-level capability. For example, the first frequency band combination includes a first frequency band and a second frequency band, the FSC includes an FS of the first frequency band and an FS of the second frequency band, and the like; if the first frequency band combination further includes other frequency bands, the FSC further includes an FS of the other frequency bands, which is not described herein again.

[0181] Taking the carrier-level capability as an example of FSPC, for the FS of the first frequency range, the first FSPC list (i.e., the third information) and the second FSPC list (i.e., the fourth information) can be included. Taking an example in which the first information indicates that M = 1 carrier is supported in the first frequency range, and the second information indicates that N = 3 carriers are supported in the first frequency range under the first condition, the first FSPC list includes 1 FSPC, i.e., FSPC0; and the second FSPC list includes 3 FSPCs, i.e., FSPC1, FSPC2, and FSPC3.

[0182] The FSPC of one carrier can correspond to one FeatureSetDownlinkPerCC and / or one FeatureSetUplinkPerCC. The FeatureSetDownlinkPerCC is used to indicate the downlink transmission capability of the terminal device on the carrier, for example, to indicate the downlink SCS, the maximum number of MIMO layers, and the maximum carrier bandwidth supported by the terminal device on the carrier. The FeatureSetUplinkPerCC is used to indicate the uplink transmission capability of the terminal device on the carrier, for example, to indicate the uplink SCS, the maximum number of MIMO layers, and the maximum carrier bandwidth supported by the terminal device on the carrier.

[0183] In this application, the capability information can also indicate that the carrier-level capability is an uplink or downlink carrier-level capability. For example, the third information is used to indicate the uplink or downlink carrier-level capability of the M carriers supported in the first frequency range. The fourth information is used to indicate the uplink or downlink carrier-level capability of the N-M carriers supported in the first frequency range under the first condition, or the fourth information is used to indicate the uplink or downlink carrier-level capability of the N carriers supported in the first frequency range under the first condition. For example, the third information is used to indicate M FeatureSetDownlinkPerCCs or M FeatureSetUplinkPerCCs, and the fourth information is used to indicate N FeatureSetDownlinkPerCCs or N FeatureSetUplinkPerCCs.

[0184] Optionally, the capability information further includes at least one of the seventh information and the eighth information. In an implementation manner, the third information is used to indicate the uplink carrier-level capability of the M carriers supported in the first frequency range. The fourth information is used to indicate the uplink carrier-level capability of the N-M carriers supported in the first frequency range under the first condition, or the fourth information is used to indicate the uplink carrier-level capability of the N carriers supported in the first frequency range under the first condition. Then the seventh information is used to indicate the downlink carrier-level capability of the M carriers supported in the first frequency range. The eighth information is used to indicate the downlink carrier-level capability of the N-M carriers supported in the first frequency range under the first condition, or the fourth information is used to indicate the downlink carrier-level capability of the N carriers supported in the first frequency range under the first condition.

[0185] In another implementation, the third information is used to indicate uplink carrier level capability of the M carriers supported in the first frequency band. The fourth information is used to indicate downlink carrier level capability of the N-M carriers supported in the first frequency band under the first condition, or the fourth information is used to indicate downlink carrier level capability of the N carriers supported in the first frequency band under the first condition. Then the seventh information is used to indicate uplink carrier level capability of the M carriers supported in the first frequency band. The eighth information is used to indicate uplink carrier level capability of the N-M carriers supported in the first frequency band under the first condition, or the fourth information is used to indicate uplink carrier level capability of the N carriers supported in the first frequency band under the first condition.

[0186] For example, in the following example, the capability information reported by the terminal device includes a first FS of a first frequency band in a first frequency band combination, the third information is a first per downlink carrier feature set list (e.g., referred to as featureSetListPerDownlinkCC) included in a FeatureSetDownlink information element of the first FS, and the fourth information is a second per downlink carrier feature set list (e.g., referred to as featureSetListPerDownlinkCC-NonCon) included in the FeatureSetDownlink information element of the first FS. The FeatureSetDownlink information element can refer to the following.

[0187] The parameter names included in the FeatureSetDownlink information element above are only examples and do not represent a limitation on the third information and the fourth information.

[0188] For example, in the above example, the capability information reported by the terminal device includes a first FS of a first frequency band in a first frequency band combination, the third information is used to indicate a first per uplink carrier feature set list (featureSetListPerUplinkCC) included in a FeatureSetUplink information element of the first FS, and the first per uplink carrier feature set list (featureSetListPerUplinkCC) can indicate M uplink per carrier feature sets. The fourth information is used to indicate a second per uplink carrier feature set list included in the FeatureSetUplink information element of the first FS, e.g., the second per uplink carrier feature set list is referred to as a non-continuous per uplink carrier feature set list (featureSetListPerUplinkCC-NonCon), and the second per uplink carrier feature set list can indicate N uplink per carrier feature sets.

[0189] For example, the set of uplink features can refer to the following.

[0190] The parameter names included in the FeatureSetUplink information element described above are merely examples and do not represent a limitation on the third information and the fourth information.

[0191] For example, the frequency band combination supported by the terminal device is CA_n7(A)-n25(A)-n66(A)-n77(A), which can be understood as a low-order combination; the frequency band combination that the terminal device can support under the first condition is CA_n7(2A)-n25(A)-n66(A)-n77(A), which can be understood as a high-order combination. For the frequency band n7, the terminal device indicates that the CA bandwidth level of the frequency band n7 is A through the first information, and indicates that only one FSPC is included in the FS corresponding to the frequency band n7 through the third information, which corresponds to the carrier level capability of one carrier. The third information can be the first FSPC list in the FS.

[0192] For how to indicate the carrier level capability corresponding to the two non-continuous carriers supported by the frequency band n7 under the first condition, there are two implementation manners as follows:

[0193] Manner one: an incremental reporting manner is adopted, a second FSPC list (i.e., the fourth information) is added to the FS corresponding to the frequency band n7, the second FSPC list includes one FSPC corresponding to an additional non-continuous carrier, that is, the second FSPC list includes one FSPC; at this time, the FSPC corresponding to the other non-continuous carrier is the same as the FSPC in the first FSPC list, and the FSPC capabilities in the two FSPC lists are combined, which is the FSPC capability of the two non-continuous carriers on the frequency band n7 in the high-order combination.

[0194] Manner two: a full reporting manner is adopted, as shown in FIG. 7, a second FSPC list (i.e., the fourth information) is added to the FS corresponding to the frequency band n7, the second FSPC list includes two non-continuous carrier corresponding FSPCs, and the number of FSPCs is consistent with the total number of non-continuous carriers supported in the frequency band n7 under the first condition. For other frequency bands, one FSPC list is also added to the FS of each frequency band, that is, one new FSPC list is added to the FS of the frequency band n25, the frequency band n66 and the frequency band n77. The number of FSPCs included in the new FSPC list in the FS of each frequency band is the same as the number of FSPCs included in the traditional FSPC list of each frequency band, and in this example, the new FSPC list and the traditional FSPC list each include one FSPC.

[0195] In the first way, in the case that the frequency band n7 supports 2A (2 carriers), the carrier level capability of one carrier is the same as the carrier level capability in the case that the frequency band n7 supports 1A; in the second way, in the case that the terminal device reports that the frequency band n7 supports 2A, 2 carrier level capabilities, and at this time, any one of the 2 carrier level capabilities can be different from the 1 carrier level capability in the case that the frequency band n7 supports 1A.

[0196] In the present application, the N carriers corresponding to the X second carrier aggregation bandwidth levels indicated by the second information can also include X sub-information, one sub-information corresponding to one second carrier aggregation bandwidth level, that is, one sub-information corresponding to one sub-block, and one sub-information being used for indicating the carrier level capability of one or more carriers corresponding to one second carrier aggregation bandwidth level.

[0197] For example, the terminal device supports the frequency band combination CA_n41(A)-n25(A), which includes the frequency band n41 and the frequency band n25. The terminal device supports the frequency band combination CA_n41(C-A)-n25(A) under the first condition. The terminal device indicates, through the first information corresponding to the frequency band n41, that the CA bandwidth level supported by the frequency band n41 is A, and indicates, through the second information corresponding to the frequency band n41, that the CA bandwidth level supported by the frequency band n41 under the first condition is C and A.

[0198] In combination with the above example, the capability information can include third information and 2 sub-information, the third information indicating the carrier level capability (for example, FSPC) of one carrier supported by the frequency band n41. In the 2 sub-information, the sub-information corresponding to the CA bandwidth level A indicates the carrier level capability of one carrier supported by the frequency band n41 under the first condition, and the sub-information corresponding to the CA bandwidth level C indicates the carrier level capability of 2 carriers supported by the frequency band n41 under the first condition.

[0199] In combination with the above example, the following behavior example, the FS of the frequency band n41 in the frequency band combination CA_n41(A)-n25(A) includes a FeatureSetDownlink information element, which can be as follows.

[0200] The third information is a per downlink carrier feature set list (featureSetListPerDownlinkCC) included in the FeatureSetDownlink information element, and the sub-information corresponding to the CA bandwidth level A is a per downlink carrier sub-block-1 feature set list (featureSetListPerDownlinkCC-SubBlock-1), which can indicate one downlink per carrier feature set (Feature Set Downlink Per CC, FSDLPC) corresponding to one carrier. The sub-information corresponding to the CA bandwidth level C is a per downlink carrier sub-block-2 feature set list (featureSetListPerDownlinkCC-SubBlock-2), which can indicate two downlink per carrier feature sets (FSDLPC) corresponding to two carriers.

[0201] The parameter names included in the FeatureSetDownlink information element are only examples and do not represent a limitation on the third information and the sub-information.

[0202] In another implementation, the capability information can include the third information and one sub-information, and the third information indicates a carrier-level capability (for example, FSPC) of one carrier supported in the frequency band n41. The sub-information corresponding to the CA bandwidth level C indicates a carrier-level capability of two carriers supported in the frequency band n41 under a first condition.

[0203] In combination with the above example, the following is an example of behavior. In the frequency band combination CA_n41(A)-n25(A), the FS of the frequency band n41 includes a FeatureSetDownlink information element, which can be as follows.

[0204] The third information is a per downlink carrier feature set list (featureSetListPerDownlinkCC) included in the FeatureSetDownlink information element, and the sub-information corresponding to the CA bandwidth level C is a per downlink carrier feature set list sub-block (featureSetListPerDownlinkCC-SubBlock), which can indicate two downlink per carrier feature sets (FSDLPC) corresponding to two carriers.

[0205] Through the above method, the carrier-level capability of N carriers is indicated by the fourth information, so that the carrier-level capability of M carriers can be different from the carrier-level capability of N carriers, making the flexibility of scheduling terminal devices higher.

[0206] In the present application, the capability information can further include two characteristic set combinations corresponding to the first frequency band combination, i.e., a first characteristic set combination and a second characteristic set combination. The first characteristic set combination is used to indicate the frequency band level capability of each frequency band in the first frequency band combination, and the carrier level capability of each carrier on each frequency band in the first frequency band combination. The second characteristic set combination is used to indicate the frequency band level capability of each frequency band in the first frequency band combination, and the carrier level capability of each carrier on each frequency band in the first frequency band combination, in the case that the first frequency band in the first frequency band combination supports N carriers under the first condition.

[0207] In an implementation manner, the first frequency band combination further includes a second frequency band, and the terminal device supports at least one carrier in the second frequency band. The first characteristic set combination is used to indicate the first frequency band level capability of the first frequency band, and the carrier level capability of the M carriers of the first frequency band. The first characteristic set combination is further used to indicate the third frequency band level capability of the second frequency band, and the carrier level capability of the at least one carrier of the second frequency band.

[0208] The second characteristic set combination is used to indicate the second frequency band level capability of the first frequency band, and the carrier level capability of the N carriers of the first frequency band, in the case that the first frequency band supports N carriers under the first condition. The second characteristic set combination is further used to indicate the fourth frequency band level capability of the second frequency band, and the carrier level capability of the at least one carrier of the second frequency band.

[0209] For one frequency band in the first frequency band combination, the frequency band level capability of the frequency band indicated by the first characteristic set combination and the frequency band level capability of the frequency band indicated by the second characteristic set combination can be the same or different. For example, the first frequency band level capability of the first frequency band and the second frequency band level capability of the first frequency band can be the same or different. Similarly, the carrier level capability of the M carriers of the first frequency band indicated by the first characteristic set combination and the carrier level capability of the N carriers of the first frequency band indicated by the second characteristic set combination can be the same or different.

[0210] In an implementation manner, the frequency band level capability of one frequency band can be FS, and the carrier level capability of one carrier can be FSPC. The FS of one frequency band can correspond to one downlink feature set (FeatureSetDownlink) and / or one uplink feature set (FeatureSetUplink). The downlink feature set is used to indicate the downlink transmission capability of the terminal device on the frequency band, and the uplink feature set is used to indicate the uplink transmission capability of the terminal device on the frequency band. The FSPC of one carrier can correspond to one downlink per carrier feature set (FeatureSetDownlinkPerCC) and / or one uplink per carrier feature set (FeatureSetUplinkPerCC).

[0211] In the implementation, the first characteristic set combination is used to indicate the FS of each frequency band in the first frequency band combination and the FSPC of each carrier on each frequency band in the first frequency band combination; and the second characteristic set combination is used to indicate the FS of each frequency band in the first frequency band combination and the FSPC of each carrier on each frequency band in the first frequency band combination in the case that the first frequency band in the first frequency band combination supports N carriers under the first condition.

[0212] For example, as shown in FIG. 8, the first frequency band combination is associated with a first FSC and a second FSC. The first FSC can refer to the first characteristic set combination, and the second FSC can refer to the second characteristic set combination. The first FSC indicates the FS of each frequency band in the first frequency band combination and the FSPC of each carrier on each frequency band; and the second FSC indicates the FS of each frequency band in the first frequency band combination and the FSPC of each carrier on each frequency band under the first condition. The first frequency band combination can also be associated with a frequency band list and a band combination level capability.

[0213] It can be understood that the signaling structure of the first FSC can be consistent with the signaling structure of the second FSC. For example, the first frequency band combination includes a first frequency band and a second frequency band, and the frequency band list associated with the first frequency band combination includes the first frequency band and the second frequency band. The first FSC indicates the FS of the first frequency band and the FS of the second frequency band; and the second FSC indicates the FS of the first frequency band and the FS of the second frequency band under the first condition. For the FS of the first frequency band indicated by the first FSC, a first FSPC list corresponding to the first frequency band is also indicated; and the first FSPC list indicates the FSPC of M carriers. Similarly, for the second frequency band, the FS of the second frequency band indicated by the first FSC also indicates a FSPC list corresponding to the second frequency band, and the specific content is not described herein.

[0214] For the FS of the first frequency band indicated by the second FSC, a second FSPC list corresponding to the first frequency band is also indicated; and the second FSPC list indicates the FSPC of N carriers. Similarly, for the second frequency band, the FS of the second frequency band indicated by the second FSC also indicates a FSPC list corresponding to the second frequency band, and the specific content is not described herein.

[0215] In combination with the foregoing description, for example, the band combination (band combination) information associated with the first frequency band combination in the capability information can be as follows.

[0216] Wherein, the bandlist indicates a band list associated with the first band combination. The featureSetCombination indicates a first feature set combination (first FSC) associated with the first band combination. The featureSetCombinaionNonCon indicates a second feature set combination (second FSC) associated with the first band combination. The name of the featureSetCombinaionNonCon is only an example, and the application does not limit the name of the second FSC.

[0217] From the above description, it can be known that a second FSC can be added in the band combination (bandcombination) information associated with the first band combination. For example, an identifier of the FSC, i.e., FeatureSetCombinationID indicated by the featureSetCombination, can be added, and the identifier of the FSC can correspond to the second FSC. The identifier of the second FSC is different from the identifier of the first FSC. It can be understood that the first FSC (e.g., featureSetCombination) is used to indicate the capability of the first band combination when the first band in the first band combination supports M carriers, i.e., the capability of the low-order band combination; and the second FSC (e.g., featureSetCombinaionNonCon) is used to indicate the capability of the first band combination when the first band in the first band combination supports N carriers under the first condition, i.e., the capability of the high-order band combination.

[0218] For example, the band combination supported by the terminal device is CA_n7(A)-n25(A)-n66(A)-n77(A), which can be understood as a low-order combination of the first band; and the band combination that can be supported by the terminal device under the first condition is CA_n7(2A)-n25(A)-n66(A)-n77(A), which can be understood as a high-order combination of the first band. Then the first FSC associated with the band combination, the terminal device indicates the FS capability corresponding to the band n7, the band n25, the band n66, and the band n77 respectively under the above low-order combination through the first FSC, and the FSPC capability corresponding to 1 carrier on each of the above bands.

[0219] For the second FSC associated with the band combination, there are two implementation manners:

[0220] Implementation manner one: in the manner of incremental reporting, the second FSC only indicates the FS corresponding to the band n7; the FS corresponding to other bands (e.g., the band n25, the band n66, and the band n77) is the same as the FS of the corresponding band in the first FSC, and the second FSC can not indicate the FS of these bands.

[0221] Further, the FSPC corresponding to the frequency band n7 can have two indication manners:

[0222] Manner one: in an incremental reporting manner, the second FSC indicates that the FS corresponding to the frequency band n7 contains one FSPC, that is, indicates the FSPC capability of one newly added carrier in the high-order combination, and the FSPC corresponding to another carrier is the same as the one FSPC in the FS corresponding to the frequency band n7 indicated by the first FSC.

[0223] Manner two: in a full reporting manner, the second FSC indicates that the FS corresponding to the frequency band n7 contains two FSPCs, that is, indicates the FSPC capabilities of two carriers in the high-order combination.

[0224] Implementation manner two: in the second FSC, the FS corresponding to n7, n25, n66 and n77 is reported.

[0225] In the implementation manner two, the first FSC and the second FSC are completely decoupled, that is, the FS of each frequency band in the high-order combination can be different from the FS of the corresponding frequency band in the low-order combination. In addition, the implementation complexity of the implementation manner two is lower, the old network device (a network device that has not been upgraded) determines the capability of the low-order combination according to the first FSC, and the new network device (a network device that has been upgraded, a network device that can identify that the terminal device supports a higher-order carrier aggregation under the first condition, or a network device that supports the method provided in the present application) can determine the capability of the high-order combination according to the second FSC, so that the network device is easier to implement.

[0226] In the present application, the capability information can further include two frequency band combination level capability sets corresponding to the first frequency band combination, that is, a first frequency band combination level capability set and a second frequency band combination level capability set. The frequency band combination level capability set can also be referred to as a frequency band combination level capability or the like.

[0227] The first frequency band combination level capability set is used to indicate a first capability of the first frequency band combination in the case that the first frequency band supports M carriers, and the first capability includes at least one of the following:

[0228] A first bandwidth combination set capability and a first power class capability.

[0229] The second frequency band combination level capability set is used to indicate a second capability of the first frequency band combination in the case that the first condition or the first frequency band supports N carriers, and the second capability includes at least one of the following:

[0230] A second bandwidth combination set capability and a second power class capability.

[0231] For example, as shown in FIG. 9, the first frequency band combination is associated with a first frequency band combination level capability set and a second frequency band combination level capability set. The first frequency band combination is also associated with an FSC and a band list. For example, the first frequency band combination includes a first frequency band and a second frequency band, the band list associated with the first frequency band combination can indicate the first frequency band and the second frequency band. The FSC associated with the first frequency band combination can indicate the FS of the first frequency band and the FS of the second frequency band.

[0232] In combination with the foregoing description, for example, the band combination (band combination) information associated with the first frequency band combination in the capability information can be as follows.

[0233] Wherein, bandlist indicates the band list associated with the first frequency band combination. featureSetCombination indicates the feature set combination (FSC) associated with the first frequency band combination. supportedBandwidthCombinationSet indicates the first bandwidth combination set capability associated with the first frequency band combination; powerClass-v1530 indicates the first power class capability associated with the first frequency band combination.

[0234] supportedBandwidthCombinationSetNonContiguous indicates the second bandwidth combination set capability associated with the first frequency band combination; powerClassNonContiguous indicates the second power class capability associated with the first frequency band combination. Wherein, the names of supportedBandwidthCombinationSetNonContiguous and powerClassNonContiguous are only examples, and the present application does not limit the names of the above parameters.

[0235] The various technical solutions provided by the present application can be used in combination. In an implementation manner, the capability information reported by the terminal device can include first information and second information. In an implementation manner, the capability information reported by the terminal device can include first information and second information, and can also include third information and fourth information.

[0236] In another implementation manner, the capability information reported by the terminal device can include first information and second information, and can also include a first feature set combination and a second feature set combination.

[0237] In another implementation manner, the capability information reported by the terminal device can include first information and second information, and can also include a first frequency band combination level capability set and a second frequency band combination level capability set.

[0238] In another implementation, the capability information reported by the terminal device can include the first information and the second information, and can further include third information, fourth information, a first frequency band combination level capability set, and a second frequency band combination level capability set.

[0239] In another implementation, the capability information reported by the terminal device can include the first information and the second information, and can further include a first feature set combination, a second feature set combination, a first frequency band combination level capability set, and a second frequency band combination level capability set.

[0240] The network device can schedule resources or configure resources for the terminal device according to the capability information of the terminal device, and the specific process is not limited in the present application.

[0241] It can be understood that, in order to implement the functions in the above embodiments, the terminal device or the network device includes a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware depends on the specific application scenario and design constraints of the technical solution.

[0242] The following is a possible structure of a communication device provided by the embodiments of the present application. These communication devices can be used to implement the functions of the terminal device or the network device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments.

[0243] As shown in FIG. 10, the communication device 1000 includes a processing unit 1010 and a communication unit 1020. The communication device 1000 is used to implement the functions of the terminal device or the network device in each of the above method embodiments.

[0244] When the communication device 1000 is used to implement the functions of the terminal device:

[0245] The processing unit is configured to receive, by the communication unit, a capability query message; the capability query message is used to query capability information.

[0246] The processing unit is configured to send, by the communication unit, capability information, the capability information including first information and second information, the first information being used to indicate that M carriers are supported in a first frequency band, and the second information being used to indicate that N carriers are supported in the first frequency band under a first condition, the first frequency band being a frequency band in a first frequency band combination, and N and M being integers greater than 0.

[0247] When the communication device 1000 is used to implement the functions of the network device:

[0248] The processing unit is configured to send a capability query message through the communication unit, wherein the capability query message is used to query capability information.

[0249] The processing unit is configured to receive capability information through the communication unit, wherein the capability information comprises first information and second information, the first information is used to indicate that M carriers are supported in a first frequency band, and the second information is used to indicate that N carriers are supported in the first frequency band under a first condition, the first frequency band is a frequency band in a first frequency band combination, and N and M are integers greater than 0.

[0250] More detailed descriptions of the processing unit 1010 and the communication unit 1020 can be directly obtained by referring to the descriptions of the above-mentioned various method embodiments, and thus will not be described here.

[0251] It should be understood that the division of the units in the above apparatus is only a logical functional division, and all or part of the units can be integrated into one physical entity, or can be physically separated. The units in the apparatus can all be implemented in the form of software called by a processing element; or all can be implemented in the form of hardware; or part of the units can be implemented in the form of software called by a processing element, and part of the units can be implemented in the form of hardware. For example, each unit can be a separately established processing element, or can be integrated in a chip of the apparatus, in addition, the unit can also be stored in the form of a program in a memory, and the function of the unit is called and executed by a processing element of the apparatus. In addition, all or part of the units can be integrated together, or can be independently implemented. The processing element herein can be a processor, which can be an integrated circuit with signal processing capability. In the implementation process, each operation of the above method or each unit can be implemented by an integrated logic circuit of hardware in the processing element, or in the form of software called by the processing element.

[0252] In one example, the units in any of the above apparatuses can be one or more integrated circuits configured to implement one or more of the above methods, e.g., one or more application specific integrated circuits (ASICs), or, one or more digital singnal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. In another example, when the units in the apparatuses can be implemented in the form of a processing element scheduler, the processing element can be a processor, such as a general purpose central processing unit (CPU), or other processor capable of invoking a program. In yet another example, the units can be integrated together in the form of a system-on-a-chip (SOC).

[0253] The above receiving unit is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the apparatus is implemented in the form of a chip, the receiving unit is an interface circuit of the chip for receiving signals from other chips or apparatuses. The above transmitting unit is an interface circuit of the apparatus for transmitting signals to other apparatuses. For example, when the apparatus is implemented in the form of a chip, the transmitting unit is an interface circuit of the chip for transmitting signals to other chips or apparatuses.

[0254] As another possible product form, the terminal device or the network device of the embodiments of the present application can be implemented by a general bus architecture. For ease of illustration, refer to FIG. 11, which is a structural schematic diagram of a communication apparatus 1100 provided by the embodiments of the present application, the communication apparatus 1100 including a processor 1101 and a transceiver 1102. The communication apparatus 1100 can be a terminal device, or a chip or chip system therein; or the communication apparatus 1100 can be a network device, or a chip or module therein. FIG. 11 only shows the main components of the communication apparatus 1100. In addition to the processor 1101 and the transceiver 1102, the communication apparatus 1100 can further include a memory 1103, and an input output apparatus (not shown in the figure).

[0255] Optionally, the processor 1101 is mainly configured to process communication protocols and communication data, and control the whole communication device, execute software programs, and process data of the software programs. The memory 1103 is mainly configured to store software programs and data. The transceiver 1102 can include radio frequency circuit and antenna, and the radio frequency circuit is mainly configured to convert baseband signals and radio frequency signals and process the radio frequency signals. The antenna is mainly configured to transceive radio frequency signals in the form of electromagnetic waves. The input and output devices, such as touch screen, display screen, keyboard, etc., are mainly configured to receive user input data and output data to the user.

[0256] Optionally, the processor 1101, the transceiver 1102, and the memory 1103 can be connected through a communication bus.

[0257] When the communication device is powered on, the processor 1101 can read the software programs in the memory 1103, interpret and execute the instructions of the software programs, and process the data of the software programs. When data needs to be transmitted wirelessly, the processor 1101 processes the baseband data to be transmitted, and outputs the baseband signals to the radio frequency circuit. The radio frequency circuit processes the baseband signals to radio frequency signals, and transmits the radio frequency signals in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives the radio frequency signals through the antenna, converts the radio frequency signals to baseband signals, and outputs the baseband signals to the processor 1101. The processor 1101 converts the baseband signals to data and processes the data.

[0258] In another implementation, the radio frequency circuit and the antenna can be arranged independently of the processor for baseband processing, for example, in a distributed scenario, the radio frequency circuit and the antenna can be arranged remotely from the communication device.

[0259] In some embodiments, in the hardware implementation, those skilled in the art can conceive that the above-mentioned communication device 1000 can adopt the form of the communication device 1100 shown in FIG. 11.

[0260] As an example, the functions / implementation processes of the processing unit 1010 in FIG. 10 can be realized by the processor 1101 in the communication device 1100 in FIG. 11 calling computer execution instructions stored in the memory 1103. The functions / implementation processes of the communication unit 1020 in FIG. 10 can be realized by the transceiver 1102 in the communication device 1100 in FIG. 11.

[0261] As another possible product form, the terminal device or network device in the present application can adopt the component structure shown in FIG. 12, or include the components shown in FIG. 12. FIG. 12 is a component structure diagram of a communication device 1200 provided in the present application.

[0262] As shown in FIG. 12, the communication apparatus 1200 includes at least one processor 1201. Optionally, the communication apparatus further includes a communication interface 1202.

[0263] When the program instructions involved are executed in the at least one processor 1201, the communication apparatus 1200 can be caused to implement the method provided by any of the preceding embodiments and any possible design thereof. Alternatively, the processor 1201 is used to implement the method provided by any of the preceding embodiments and any possible design thereof by means of logic circuit or executing code instructions.

[0264] The communication interface 1202 can be used to receive program instructions and transmit them to the processor, or the communication interface 1202 can be used for the communication apparatus 1200 to communicate with other communication devices, such as interaction control signaling and / or service data, etc. For example, the communication interface 1202 can be used to receive signals from other devices outside the communication apparatus 1200 and transmit them to the processor 1201, or send signals from the processor 1201 to other communication devices outside the communication apparatus 1200.

[0265] Optionally, the communication interface 1202 can be a code and / or data read-write interface circuit, or the communication interface 1202 can be a signal transmission interface circuit between the communication processor and the transceiver, or a pin of the chip.

[0266] Optionally, the communication apparatus 1200 can further include at least one memory 1203, which can be used to store the program instructions and / or data involved. It should be noted that the memory 1203 can exist independently of the processor 1201, or can be integrated with the processor 1201. The memory 1203 can be located inside the communication apparatus 1200 or outside the communication apparatus 1200, without limitation.

[0267] Optionally, the communication apparatus 1200 can further include a power supply circuit 1204, which can be used to supply power to the processor 1201. The power supply circuit 1204 can be located in the same chip as the processor 1201, or in another chip outside the chip where the processor 1201 is located.

[0268] Optionally, the communication apparatus 1200 can further include a bus, through which various parts of the communication apparatus 1200 can be interconnected.

[0269] In some embodiments, in hardware implementation, those skilled in the art can conceive that the communication apparatus 1000 shown in FIG. 10 can adopt the form of the communication apparatus 1200 shown in FIG. 12.

[0270] As an example, the function / implementation process of the processing unit 1010 in FIG. 10 can be implemented by invoking the computer-executed instructions stored in the memory 1203 by the processor 1201 in the communication apparatus 1200 shown in FIG. 12. The function / implementation process of the communication unit 1020 in FIG. 10 can be implemented by the communication interface 1202 in the communication apparatus 1200 shown in FIG. 12.

[0271] It should be noted that the structure shown in FIG. 12 does not constitute a specific limitation on the terminal device or the network device. For example, in some other embodiments of the present application, the terminal device or the network device can include more or fewer components than those shown, or combine certain components, or split certain components, or different arrangement of components. The components shown can be implemented in hardware, software, or a combination of software and hardware.

[0272] When the communication apparatus is a terminal chip, the terminal chip implements the functions of the terminal in the method embodiments. The terminal chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent by the base station to the terminal; or the terminal chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal, and the information is sent by the terminal to the base station.

[0273] When the communication apparatus is a base station module, the base station module implements the functions of the base station in the method embodiments. The base station module receives information from other modules (such as a radio frequency module or an antenna) in the base station, and the information is sent by the terminal to the base station; or the base station module sends information to other modules (such as a radio frequency module or an antenna) in the base station, and the information is sent by the base station to the terminal. The base station module here can be a baseband chip of the base station, or a DU or other module, and the DU here can be a DU under the open radio access network (O-RAN) architecture.

[0274] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0275] Based on the same technical concept, the embodiments of the present application further provide a computer readable storage medium, which stores instructions, the instructions can also be referred to as computer programs, computer program codes, etc. The instructions run on a computer, so that the computer executes the functions of the terminal device or the network device in the above method embodiments.

[0276] Based on the same technical concept, the embodiments of the present application further provide a computer program product, which comprises computer programs or instructions, when the computer programs or the instructions are run by a communication device, the method steps executed by the terminal device or the network device in the above method embodiments are executed.

[0277] Based on the same technical concept, the embodiments of the present application further provide a chip, which can comprise a processor, and can also comprise a memory (or the chip is coupled with the memory), the chip executes program instructions in the memory, so as to execute the method executed by the terminal device or the network device in the above embodiments. Wherein, "coupled" means that two components are directly or indirectly combined with each other, such as the coupling can mean that the two components are electrically connected.

[0278] Based on the same technical concept, the embodiments of the present application further provide a communication system, which comprises a terminal device and a network device. The terminal device is used to realize the functions of the terminal device in the above various embodiments; the network device is used to realize the functions of the network device in the above various embodiments.

[0279] The method steps in the embodiments of the present application can be realized by hardware, or by the way that the processor executes software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium, and can write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. Of course, the processor and the storage medium can also exist as discrete components in the base station or the terminal.

[0280] In the embodiments described above, all or some of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or some of the embodiments can be implemented in the form of one or more computer program products in whole or in part. The computer program product includes one or more computer programs or instructions. When loaded and executed by one or more computers, the computer program or instructions can perform all or some of the procedures or functions described in the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable apparatuses. The computer program 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 program or instructions can be transmitted from one website, computer, server or data center to another website, 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 that is accessible by a computer. The available medium can be a magnetic medium, such as a floppy diskette, a hard disk, or a magnetic tape; an optical medium, such as a compact disk (CD) or a digital video disk (DVD); or a semiconductor medium, such as a solid-state disk (SSD). The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0281] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0282] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) containing computer-usable program code.

[0283] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions specified in the flowchart block or blocks.

[0284] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks.

[0285] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application cover the modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A communication method characterized by comprising: Comprising: receiving a capability enquiry message; the capability enquiry message is used for inquiring capability information; sending the capability information, the capability information comprising first information and second information, the first information being used for indicating that M carriers are supported in a first frequency band, the second information being used for indicating that N carriers are supported in the first frequency band under a first condition, the first frequency band being a frequency band in a first frequency band combination, N and M being integers greater than 0.

2. The method of claim 1, wherein, the first information being used for indicating that M carriers are supported in a first frequency band, comprising: the first information being used for indicating that a first carrier aggregation bandwidth level is supported in the first frequency band, the first carrier aggregation bandwidth level corresponding to M carriers.

3. The method according to claim 1 or 2, characterized in that, the second information being used for indicating that N carriers are supported in the first frequency band under a first condition, comprising: the second information being used for indicating that a number N of non-continuous carriers is supported in the first frequency band under a first condition; alternatively, the second information being used for indicating that X second carrier aggregation bandwidth levels are supported in the first frequency band under the first condition, the X second carrier aggregation bandwidth levels corresponding to N carriers, the second carrier aggregation bandwidth level corresponding to one carrier or a plurality of continuous carriers, X being an integer greater than 0; alternatively, the second information taking a preset value, indicating that N carriers are supported in the first frequency band under a first condition.

4. The method according to any one of claims 1 to 3, characterized in that, the first condition comprising at least one of the following: a carrier aggregation bandwidth of the N carriers being less than or equal to a first threshold value; a maximum receive time difference MRTD of the N carriers being less than or equal to a second threshold value; a power spectral density PSD difference of the N carriers being less than or equal to a third threshold value; the N carriers being co-sited carriers; the N carriers corresponding to a same radio frequency chain.

5. The method according to any one of claims 1 to 4, characterized in that, the N carriers comprising non-continuous carriers.

6. The method according to any one of claims 1 to 5, characterized in that, the capability information further comprising third information and fourth information, the third information being used for indicating carrier level capability of M carriers supported in a first frequency band; the fourth information being used for indicating carrier level capability of N-M carriers in N carriers supported in the first frequency band under a first condition, or the fourth information being used for indicating carrier level capability of N carriers supported in the first frequency band under the first condition.

7. The method according to any one of claims 1 to 6, characterized in that, the capability information further comprising a first feature set combination and a second feature set combination; wherein, the first feature set combination is used for indicating first frequency band level capability of the first frequency band, and carrier level capability of M carriers of the first frequency band; the second feature set combination is used for indicating second frequency band level capability of the first frequency band under the first condition, and carrier level capability of N carriers of the first frequency band.

8. The method of claim 7, wherein, the first frequency band combination further comprising a second frequency band; the first feature set combination is further used for indicating third frequency band level capability of the second frequency band, and carrier level capability of at least one carrier of the second frequency band; the second feature set combination is further used for indicating fourth frequency band level capability of the second frequency band, and carrier level capability of at least one carrier of the second frequency band.

9. The method according to any one of claims 1 to 8, characterized in that, the capability information further comprising a first frequency band combination level capability set and a second frequency band combination level capability set; The first frequency band combination level capability set is used to indicate a first capability of the first frequency band combination in a case that the first frequency band supports M carriers, and the first capability includes at least one of the following: a first bandwidth combination set capability and a first power class capability; The second frequency band combination level capability set is used to indicate a second capability of the first frequency band combination in a case that the first frequency band supports N carriers, and the second capability includes at least one of the following: a second bandwidth combination set capability and a second power class capability.

10. A communication method characterized by comprising: The method comprises: sending a capability query message; The capability query message is used to query capability information; receiving the capability information, the capability information including first information and second information, the first information being used to indicate that the first frequency band supports M carriers, and the second information being used to indicate that the first frequency band supports N carriers under a first condition, the first frequency band being a frequency band in a first frequency band combination, and N and M being integers greater than 0.

11. The method of claim 10, wherein, The first information is used to indicate that the first frequency band supports M carriers, and includes: The first information is used to indicate that the first frequency band supports a first carrier aggregation bandwidth class, and the first carrier aggregation bandwidth class corresponds to M carriers.

12. The method according to claim 10 or 11, characterized in that, The second information is used to indicate that the first frequency band supports N carriers under a first condition, and includes: The second information is used to indicate that the first frequency band supports a number N of non-continuous carriers under the first condition; Or, the second information is used to indicate that the first frequency band supports X second carrier aggregation bandwidth classes under the first condition; the X second carrier aggregation bandwidth classes correspond to N carriers, the second carrier aggregation bandwidth class corresponds to one carrier or a plurality of continuous carriers, and X is an integer greater than 0; Or, the second information takes a preset value, indicating that the first frequency band supports N carriers under the first condition.

13. The method according to any one of claims 10 to 12, characterized in that, The first condition includes at least one of the following: a carrier aggregation bandwidth of the N carriers is less than or equal to a first threshold value; a maximum receive time difference MRTD of the N carriers is less than or equal to a second threshold value; a power spectral density PSD difference of the N carriers is less than or equal to a third threshold value; the N carriers are co-sited carriers; the N carriers correspond to a same radio frequency chain.

14. The method according to any one of claims 10 to 13, characterized in that, The N carriers include non-continuous carriers.

15. The method according to any one of claims 10 to 14, characterized in that, The capability information further includes third information and fourth information; the third information is used to indicate carrier level capabilities of the M carriers supported by the first frequency band; The fourth information is used to indicate carrier level capabilities of N-M carriers in the N carriers supported by the first frequency band under the first condition; or, the fourth information is used to indicate carrier level capabilities of the N carriers supported by the first frequency band under the first condition.

16. The method according to any one of claims 10 to 15, characterized in that, The capability information further includes a first feature set combination and a second feature set combination; The first feature set combination is used to indicate a first frequency band level capability of the first frequency band and carrier level capabilities of the M carriers of the first frequency band; The second feature set combination is used to indicate a second frequency band level capability of the first frequency band under the first condition and carrier level capabilities of the N carriers of the first frequency band.

17. The method of claim 16, wherein, The first frequency band combination further comprises a second frequency band; The first characteristic set combination is further used for indicating a third frequency band level capability of the second frequency band, and a carrier level capability of at least one carrier of the second frequency band; The second characteristic set combination is further used for indicating a fourth frequency band level capability of the second frequency band, and a carrier level capability in at least one carrier of the second frequency band.

18. The method of any one of claims 10 to 17, wherein, The capability information further comprises a first frequency band combination level capability set and a second frequency band combination level capability set; The first frequency band combination level capability set is used for indicating a first capability of the first frequency band combination in a case that the first frequency band supports M carriers, and the first capability comprises at least one of the following: a first bandwidth combination set capability, a first power level capability; The second frequency band combination level capability set is used for indicating a second capability of the first frequency band combination in a case that the first frequency band supports N carriers, and the second capability comprises at least one of the following: a second bandwidth combination set capability, a second power level capability.

19. A communications device, characterized by Comprising: a processing unit, configured to receive a capability query message through a communication unit; The capability query message is used for querying capability information; The processing unit is configured to send capability information through the communication unit, and the capability information comprises first information and second information, the first information is used for indicating that the first frequency band supports M carriers, and the second information is used for indicating that the first frequency band supports N carriers under a first condition, the first frequency band is a frequency band in a first frequency band combination, and N and M are integers greater than 0.

20. A communications device, characterized by Comprising: a processing unit, configured to send a capability query message through a communication unit; The capability query message is used for querying capability information; The processing unit is configured to receive capability information through the communication unit, and the capability information comprises first information and second information, the first information is used for indicating that the first frequency band supports M carriers, and the second information is used for indicating that the first frequency band supports N carriers under a first condition, the first frequency band is a frequency band in a first frequency band combination, and N and M are integers greater than 0.

21. A communications device, characterized by The chip comprises a processor; the processor is used for executing computer programs or instructions, so that the communication device implements the method in any one of claims 1 to 18.

22. A computer-readable storage medium, characterized in that, The computer programs or instructions are stored in the computer, and when the computer programs or instructions are executed on the computer, the computer implements the method in any one of claims 1 to 18.

23. A chip, characterized by The chip comprises a processor, which is coupled with a memory and is used for executing computer programs or instructions stored in the memory, so that the chip implements the method in any one of claims 1 to 18.

24. A computer program product, characterised in that, When the computer reads and executes the computer program product, the method in any one of claims 1 to 18 is executed.

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