Communication method and apparatus

Abstract

The present application provides a communication method and apparatus. The method comprises: sending first information to a network device, wherein the first information indicates a first frequency band supported by a terminal device, and the first frequency band comprises an uplink frequency band and / or a downlink frequency band; and sending second information to the network device, the second information indicating a working frequency range set, wherein the working frequency range set comprises at least one sub-working frequency range, the sub-working frequency range is a working frequency range supported by the terminal device on the first frequency band, and the sub-working frequency range comprises an uplink working frequency range and / or a downlink working frequency range. By means of the first information and the second information, it can be ensured that a frequency resource allocated to the terminal device by the network device corresponds to a frequency range supported by the terminal device on a frequency band, thereby realizing flexible frequency resource scheduling, and satisfying the requirement of establishing good and secure communication between the network device and the terminal device.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application with application number 202311134378.6 filed with the State Intellectual Property Office of China on August 31, 2023, and priority to the Chinese patent application with the invention name “A Communication Method and Device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a communication method and device. Background Art

[0003] Currently, protocol standards such as TS 38.101-1 and TS38.101-2 define frequency band combination indicators and specific frequency band indicators. Terminal devices report their working capabilities to network devices according to the protocol, so that network devices allocate frequency resources to terminal devices based on terminal capabilities.

[0004] However, with the popularization of 5G networks, the current protocol standards and communication solutions are insufficient to meet the needs of establishing good and secure communications between network equipment and terminal devices. In addition, the update and iteration of terminal equipment has also led to discrepancies between the frequency ranges supported by different terminal devices and the standard definitions. If new frequency bands are defined using standards, and the frequency band combination indicators and specific frequency band indicators are redefined based on existing frequency bands and terminal device capabilities, the complexity of frequency resource scheduling for network equipment will increase. At the same time, operators will lose the ecosystem of the original frequency bands. Not only is the workload of the standard heavy, but it also brings additional complexity and cost to device implementation. In addition, the testing burden of the new standard has also increased significantly, which is not conducive to the development of the industry.

[0005] Therefore, in the new ecology, how to achieve flexible frequency resource scheduling, ensure that the frequency resources allocated by network equipment correspond to the capabilities of terminal equipment, and meet the needs of establishing good and secure communication between network equipment and terminal equipment is an urgent problem to be solved.

[0006] Summary of the Invention

[0007] The present application provides a communication method and apparatus, in which a terminal device reports the supported operating frequency range to a network device based on the working capability of its own duplexer, thereby ensuring that the allocated frequency resources correspond to the frequency range supported by the terminal device, realizing flexible frequency resource scheduling of the network device, and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0008] In a first aspect, a communication method is provided, comprising: sending first information to a network device, the first information indicating a first frequency band supported by a terminal device, the first frequency band including an uplink frequency band and / or a downlink frequency band; sending second information to the network device, the second information indicating a set of operating frequency ranges, wherein the set of operating frequency ranges includes at least one sub-operating frequency range, the sub-operating frequency range being an operating frequency range supported by the terminal device on the first frequency band, the sub-operating frequency range including an uplink operating frequency range and / or a downlink operating frequency range; wherein the uplink frequency band is 703 to 74 8MHz, the downlink frequency band is 758~803MHz; the uplink operating frequency range is 703~733MHz, and the downlink operating frequency range is 758~788MHz; and / or the uplink operating frequency range is 718~748MHz, and the downlink operating frequency range is 773~803MHz; and / or the uplink operating frequency range is 703~743MHz, and the downlink operating frequency range is 758~798MHz; and / or the uplink operating frequency range is 703~748MHz, and the downlink operating frequency range is 758~803MHz.

[0009] Through the first information and the second information, it can be ensured that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device in the frequency band, thereby realizing flexible frequency resource scheduling and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0010] In conjunction with the first aspect, in certain implementations of the first aspect, the second information is determined based on a duplexer of the terminal device. Thus, the second information can be transmitted between the terminal device and the network device to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the duplexer of the terminal device.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the second information indicates the duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to a set of operating frequency ranges; or the second information indicates the duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to a set of operating frequency ranges.

[0012] In conjunction with the first aspect, in certain implementations of the first aspect, the method further includes: receiving frequency resources allocated by a network device, where the frequency resources belong to a first frequency band and to a set of operating frequency ranges. This ensures that the frequency resources allocated by the network device to the terminal device correspond to a frequency range supported by the terminal device in the frequency band.

[0013] In conjunction with the first aspect, in certain implementations of the first aspect, the method further includes: sending third information to the network device, the third information indicating a maximum transmission bandwidth supported by the terminal device, wherein the bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth. The maximum transmission bandwidth may be a specific value, such as 30 MHz, 40 MHz, or 45 MHz. Thus, after the network device determines the actual operating frequency range supported by the terminal device using the first and second information, it can schedule frequency resources of a specific bandwidth for the terminal device within the actual operating frequency range supported by the terminal device, thereby establishing good communication.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the first information and the second information are sent via terminal device capability information. In some implementations, the third information is also sent via terminal device capability information.

[0015] In a second aspect, a communication method is provided, comprising: receiving first information sent from a terminal device, the first information indicating a first frequency band supported by the terminal device, the first frequency band including an uplink frequency band and / or a downlink frequency band; receiving second information sent from the terminal device, the second information indicating a working frequency range set, wherein the working frequency range set includes at least one sub-working frequency range, the sub-working frequency range is a working frequency range supported by the terminal device on the first frequency band, the sub-working frequency range including an uplink working frequency range and / or a downlink working frequency range; allocating frequency resources to the terminal device, the frequency resources being allocated based on the first information and the second information The information is determined; among which, the uplink frequency band is 703-748 MHz, and the downlink frequency band is 758-803 MHz; the uplink operating frequency range is 703-733 MHz, and the downlink operating frequency range is 758-788 MHz; and / or the uplink operating frequency range is 718-748 MHz, and the downlink operating frequency range is 773-803 MHz; and / or the uplink operating frequency range is 703-743 MHz, and the downlink operating frequency range is 758-798 MHz; and / or the uplink operating frequency range is 703-748 MHz, and the downlink operating frequency range is 758-803 MHz.

[0016] Through the first information and the second information, it can be ensured that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device in the frequency band, thereby realizing flexible frequency resource scheduling and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0017] In conjunction with the second aspect, in certain implementations of the second aspect, the second information is determined based on a duplexer of the terminal device. Thus, the second information can be transmitted between the terminal device and the network device to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the duplexer of the terminal device.

[0018] In combination with the second aspect, in certain implementations of the second aspect, the second information indicates the duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to a set of operating frequency ranges; or the second information indicates the duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to a set of operating frequency ranges.

[0019] In conjunction with the second aspect, in certain implementations of the second aspect, the frequency resource belongs to the first frequency band and belongs to the set of operating frequency ranges, thereby ensuring that the frequency resource allocated by the network device to the terminal device corresponds to the frequency range supported by the terminal device in the frequency band.

[0020] In conjunction with the second aspect, in certain implementations of the second aspect, the method further includes: receiving third information sent from a terminal device, the third information indicating a maximum transmission bandwidth supported by the terminal device; the bandwidth of the frequency resource being less than or equal to the maximum transmission bandwidth. The maximum transmission bandwidth may refer to a specific numerical value, such as 30 MHz, 40 MHz, or 45 MHz. Thus, after the network device determines the actual operating frequency range supported by the terminal device using the first and second information, it can schedule frequency resources of a specific bandwidth for the terminal device within the actual operating frequency range supported by the terminal device, thereby establishing good communication.

[0021] In conjunction with the second aspect, in certain implementations of the second aspect, the first information and the second information are received via the terminal device capability information. This allows for the reuse of some existing signaling, ensuring compatibility with existing systems and avoiding the additional complexity and cost associated with redefining standards. In some implementations, the third information is also received via the terminal device capability information.

[0022] According to a third aspect, a terminal device is provided, comprising: a sending module for sending first information to a network device, the first information indicating a first frequency band supported by the terminal device, the first frequency band including an uplink frequency band and / or a downlink frequency band; the sending module is also used to send second information to the network device, the second information indicating a set of operating frequency ranges, wherein the set of operating frequency ranges includes at least one sub-operating frequency range, the sub-operating frequency range is an operating frequency range supported by the terminal device on the first frequency band, the sub-operating frequency range including an uplink operating frequency range and / or a downlink operating frequency range; wherein the uplink frequency band The uplink operating frequency range is 703-748MHz, and the downlink operating frequency range is 758-803MHz; the uplink operating frequency range is 703-733MHz, and the downlink operating frequency range is 758-788MHz; and / or the uplink operating frequency range is 718-748MHz, and the downlink operating frequency range is 773-803MHz; and / or the uplink operating frequency range is 703-743MHz, and the downlink operating frequency range is 758-798MHz; and / or the uplink operating frequency range is 703-748MHz, and the downlink operating frequency range is 758-803MHz.

[0023] Through the first information and the second information, it can be ensured that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device in the frequency band, thereby realizing flexible frequency resource scheduling and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0024] In conjunction with the third aspect, in certain implementations of the third aspect, the second information is determined based on a duplexer of the terminal device. Thus, the second information can be transmitted between the terminal device and the network device to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the duplexer of the terminal device.

[0025] In combination with the third aspect, in certain implementations of the third aspect, the second information indicates the duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to a set of operating frequency ranges; or the second information indicates the duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to a set of operating frequency ranges.

[0026] In conjunction with the third aspect, in certain implementations of the third aspect, the terminal device further includes a receiving module configured to receive frequency resources sent from the network device, where the frequency resources belong to the first frequency band and to the set of operating frequency ranges. This ensures that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device in the frequency band.

[0027] In conjunction with the third aspect, in certain implementations of the third aspect, the sending module is further configured to send third information to the network device, where the third information indicates a maximum transmission bandwidth supported by the terminal device, wherein the bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth. The maximum transmission bandwidth may be a specific numerical value, such as 30 MHz, 40 MHz, or 45 MHz. Thus, after the network device determines the actual operating frequency range supported by the terminal device using the first and second information, it can schedule frequency resources of a specific bandwidth for the terminal device within the actual operating frequency range supported by the terminal device, thereby establishing good communication.

[0028] In conjunction with the third aspect, in certain implementations of the third aspect, the sending module sends the first information and the second information using the terminal device capability information. This allows for the reuse of some existing signaling, ensuring compatibility with existing systems and avoiding the additional complexity and cost associated with redefining standards. In some implementations, the sending module sends the third information using the terminal device capability information.

[0029] In a fourth aspect, a network device is provided, comprising: a receiving module for receiving first information sent from a terminal device, the first information indicating a first frequency band supported by the terminal device, the first frequency band including an uplink frequency band and / or a downlink frequency band; the receiving module is also used to receive second information sent from the terminal device, the second information indicating a set of operating frequency ranges, wherein the set of operating frequency ranges includes at least one sub-operating frequency range, the sub-operating frequency range is an operating frequency range supported by the terminal device on the first frequency band, the sub-operating frequency range including an uplink operating frequency range and / or a downlink operating frequency range; a processing module for allocating frequency resources to the terminal device, the frequency resources are allocated according to The first information and the second information are determined; wherein, the uplink frequency band is 703~748MHz, and / or the downlink frequency band is 758~803MHz; the uplink operating frequency range is 703~733MHz, and the downlink operating frequency range is 758~788MHz; and / or the uplink operating frequency range is 718~748MHz, and the downlink operating frequency range is 773~803MHz; and / or the uplink operating frequency range is 703~743MHz, and the downlink operating frequency range is 758~798MHz; and / or the uplink operating frequency range is 703~748MHz, and the downlink operating frequency range is 758~803MHz.

[0030] Through the first information and the second information, it can be ensured that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device in the frequency band, thereby realizing flexible frequency resource scheduling and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0031] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the second information is determined based on the duplexer of the terminal device. Thus, the terminal device and the network device can transmit the second information to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the duplexer of the terminal device.

[0032] In combination with the fourth aspect, in certain implementations of the fourth aspect, the second information indicates the duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to a set of operating frequency ranges; or the second information indicates the duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to a set of operating frequency ranges.

[0033] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the frequency resource belongs to the first frequency band and to the set of operating frequency ranges, thereby ensuring that the frequency resource allocated by the network device to the terminal device corresponds to the frequency range supported by the terminal device in the frequency band.

[0034] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the receiving module is further configured to receive third information sent from the terminal device, where the third information indicates the maximum transmission bandwidth supported by the terminal device; the bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth. The maximum transmission bandwidth may refer to a specific numerical value, such as 30 MHz, 40 MHz, or 45 MHz. Thus, after the network device determines the actual operating frequency range supported by the terminal device using the first and second information, it can schedule frequency resources of a specific bandwidth for the terminal device within the operating frequency range actually supported by the terminal device, thereby establishing good communication.

[0035] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the receiving module receives the first information and the second information via the terminal device capability information. This allows for the reuse of some existing signaling, ensuring compatibility with existing systems and avoiding the additional complexity and cost associated with redefining standards. In some implementations, the receiving module receives the third information via the terminal device capability information.

[0036] In a fifth aspect, a chip is provided, comprising a processor, wherein the processor is coupled to a memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory, so that part or all of the steps of the method described in the first aspect and any possible implementation thereof, and the second aspect and any possible implementation thereof are executed.

[0037] In a sixth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer program or instruction is executed by a processor, part or all of the steps of the method described in the first aspect and any possible implementation thereof, and the second aspect and any possible implementation thereof are executed.

[0038] In a seventh aspect, a computer product is provided. When the computer program product is run, part or all of the steps of the method described in the first aspect and any possible implementation thereof, and the second aspect and any possible implementation thereof are executed.

[0039] In an eighth aspect, a communication system is provided, comprising a first communication device provided by the third aspect and various possible implementations of the aforementioned aspects, and a second communication device provided by the fourth aspect and various possible implementations of the aforementioned aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.

[0041] FIG2 is a schematic diagram of a method for a terminal device to report its working capability, provided in an embodiment of the present application.

[0042] FIG3 is a schematic diagram of a communication system in a terminal provided in an embodiment of the present application.

[0043] FIG4 is a schematic diagram of a communication method provided in an embodiment of the present application.

[0044] FIG5 is a schematic diagram of a division of a set of operating frequency ranges provided in an embodiment of the present application.

[0045] FIG6 is a schematic diagram of a terminal device provided in an embodiment of the present application.

[0046] FIG7 is a schematic diagram of a network device provided in an embodiment of the present application.

[0047] FIG8 is a system diagram of a terminal device and a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The technical solution in this application will be described below with reference to the accompanying drawings.

[0049] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as long term evolution (LTE) system, long term evolution advanced pro (LTE-A pro), LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, new radio (NR) and future communication systems.

[0050] The terminal device in the embodiments of the present application may refer to a user device, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved public land mobile network (PLMN), etc., and the present application does not limit this.

[0051] The network device in the embodiment of the present application can be any device with wireless transceiver function. The network device includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home evolved NodeB (or home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It can also be a gNB or a transmission point (TRP or TP) in a fifth generation (5G) system, one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc.

[0052] In some deployments, a gNB may include a centralized unit (CU) and a distributed unit (DU). The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. For example, the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, implementing the functions of the radio link control (RLC), media access control (MAC), and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by both the DU and the AAU.

[0053] It is understood that the network device may include one or more of a CU, a DU, and an AAU. In addition, the CU may be classified as a network device in an access network (RAN) or a network device in a core network (CN), which is not limited in this application.

[0054] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in Figure 1, the wireless communication system may include at least one network device 101, and the network device 101 and one or more terminal devices (such as terminal device 102 and terminal device 103 shown in Figure 1) communicate using wireless communication technology. In downlink transmission, the network device is the transmitter and the terminal device is the receiver. In uplink transmission, the terminal device is the transmitter and the network device is the receiver.

[0055] It should be understood that what is shown in FIG1 is merely an example, and the communication system may include one or more network devices and one or more terminal devices, which are not limited here.

[0056] To facilitate understanding, we first briefly introduce the relevant concepts involved in this application.

[0057] Spectrum: A spectrum refers to a family of electromagnetic waves whose wavelengths (or frequencies) are arranged continuously. Frequencies are continuous, not discrete, and close frequencies tend to interfere with each other. The spectrum can be divided into multiple frequency bands, each used for different purposes.

[0058] Band: A band is a specific frequency range within a spectrum. It's typically represented by a starting frequency and an ending frequency. To avoid interference and conflicts when using the spectrum, frequency bands must be properly allocated and managed. Different bands have different transmission characteristics and coverage ranges, and are used to transmit different types of information or services.

[0059] Bandwidth: Bandwidth refers to the frequency range within a specific frequency band that can be used for data transmission. It can also be understood as the width of a frequency band. Bandwidth determines the data transmission rate, similar to the width of a road. Therefore, the greater the bandwidth, the faster the delivery speed, which in turn increases the data transmission rate.

[0060] Each access standard, such as LTE or NR, supports different frequency ranges, which are defined as specific bands. In the 3GPP standard, each band is assigned a unique number, such as band 1 or band 2. These bands can be further divided into uplink (UL) and downlink (DL) bands, used for signals sent from mobile phones to base stations and from base stations to mobile phones, respectively.

[0061] Table 1 below lists some of the LTE bands defined in TS 36.101. Among the operating frequency bands of evolved-UMTS terrestrial radio access (E-UTRA), some of the bands in Table 1 are used as examples below:

[0062] Table 1

[0063] TS 38.101-1 primarily defines frequency range 1 (FR1), often referred to as the sub-6 GHz or low-frequency band, which covers the frequency range of 410 MHz to 7125 MHz. TS 38.101-2 defines frequency range 2 (FR2), the millimeter wave band. FR2 is divided into FR2-1, covering the frequency range of 24,250 MHz to 52,600 MHz, and FR2-2, covering the frequency range of 52,600 MHz to 71,000 MHz.

[0064] The following is an example of the FR1 band using the portion in Table 2:

[0065] Table 2

[0066] The following is an example of the FR2 band using the portion in Table 3:

[0067] Table 3

[0068] During communication between terminal devices and network devices, different terminal devices support different frequency bands due to different terminal device configurations. Therefore, the terminal devices need to report their operating capabilities to the network devices so that the network devices can allocate frequency resources to the terminal devices based on their capabilities.

[0069] FIG2 is a schematic diagram of a method for a terminal device to report its working capability according to an embodiment of the present application. As shown in FIG2 , the method includes:

[0070] S210, the network device sends a terminal device capability request (UECapabilityEnquiry) message to the terminal device; correspondingly, the terminal device receives the terminal device capability request message from the network device.

[0071] The network device specifically uses the Filter field in UECapabilityEnquiry to indicate the working capability of the terminal that the network device specifically wants to know.

[0072] S220, the terminal device sends terminal device capability information (UECapabilityInformation) to the network device; correspondingly, the network device receives the terminal device capability information from the terminal device.

[0073] Among them, UECapabilityInformation signaling can include multiple data structures (Containers), each Container represents the working capability of the terminal device under corresponding wireless access technologies such as LTE, NR or other. Specific working capabilities may refer to frequency band combination information, maximum transmission bandwidth information, supported modulation and coding schemes, etc. It can also be understood that UECapabilityInformation includes multiple fields, among which the frequency band information, taking supportedBandListNR as an example, is used to indicate the working capability under the NR technology supported by the terminal device, which records all NR bands supported by the terminal in a list format. The supportedBandListNR field includes multiple bandNRs, and bandNR represents a specific frequency band in the list, or can also be called an element. The frequency band in the frequency band information includes a frequency band index, which can also be understood as bandNR including fields such as FreqBandIndicatorNR and channelBWs-UL / channelBWs-DL. Among them, the FreqBandIndicatorNR field defines the frequency band number of the frequency band according to TS 38.101-1 and TS 38.101-2. The channelBWs-UL / channelBWs-DL field can be understood as indicating the maximum transmission bandwidth of the terminal device for uplink and downlink.

[0074] As can be seen above, current protocols such as TS 38.101-1 and TS 38.101-2 define frequency bands and specific frequency band indicators. Terminal devices report their capabilities to network devices according to these protocols, allowing network devices to determine the frequency resources allocated to them. However, with the widespread adoption of 5G networks and the ongoing evolution of terminal devices, current protocols, standards, and communication solutions are no longer sufficient to ensure secure communication between network devices and terminal devices.

[0075] Based on different market demands, it can be divided into n28A and n28B. Specifically, the n28A frequency range is 703-733 MHz for uplink and 758-788 MHz for downlink, covering a 30 MHz frequency range for both uplink and downlink. The n28B frequency range is 718-748 MHz for uplink and 773-803 MHz for downlink, covering a 30 MHz frequency range for both uplink and downlink. Whether a terminal device supports the n28A and / or n28B frequency bands depends on the operating capabilities of its own duplexer. That is, while the duplexer supports an operating frequency range of 30 MHz, the two duplexers supporting the n28A and n28B bands have different power backoff and spurious emission requirements. With the reorganization and allocation of spectrum, some manufacturers have already produced duplexers covering a 40 MHz frequency range. Therefore, it is possible to use 40 MHz of spectrum for both uplink and downlink in 5G networks, corresponding to 703-743 MHz for uplink and 758-798 MHz for downlink. In the future, depending on the duplexer capabilities, the frequency range of 5G networks may be further expanded to 703-748 MHz for uplink and 758-803 MHz for downlink.

[0076] However, in this new ecosystem, resource scheduling for network equipment still needs to ensure that allocated frequency resources correspond to the frequency ranges supported by terminal devices. New frequency band solutions, i.e., defining new frequency bands, will increase the complexity of frequency resource scheduling for network equipment. At the same time, operators will lose the existing frequency band ecosystem. From a standards perspective, frequency bands and specific frequency band indicators need to be redefined based on the frequency bands and terminal operating capabilities. This not only requires a large amount of standardization work, but also brings additional complexity and cost to device implementation. Furthermore, the testing burden of the new standards has also increased significantly, which is not conducive to the development of the industry. Therefore, in this new ecosystem, how to achieve flexible frequency resource scheduling to meet the needs of establishing good and secure communications between network equipment and terminal devices is an urgent problem to be solved.

[0077] The communication system of the terminal device is briefly introduced below with reference to FIG3 .

[0078] FIG3 is a schematic diagram of a communication system in a terminal according to an embodiment of the present application. As shown in FIG3 , the communication system may include an antenna 310, a radio frequency front end 320, a transceiver 330, and a baseband processor 340.

[0079] Antenna 310 is used to transmit and / or receive radio frequency signals.

[0080] The RF front end 320 is used to filter and amplify RF signals. Specifically, the RF front end 320 may include a power amplifier (PA) 321, a filter 322, a low-noise amplifier (LNA) 323, a switch 324, and a duplexer 325. Specifically, the power amplifier 321 can be used to amplify RF signals at the transmitting end, the filter 322 is used to filter transmitted or received signals, and the low-noise amplifier 323 is used to amplify received signals and reduce noise.

[0081] The transceiver 330 is used to convert digital signals into radio frequency signals.

[0082] The baseband processor 340 is used to transmit or receive digital signals. The baseband processor 340 processes digital signals, which may include modulation and demodulation, encoding and decoding, and channel estimation.

[0083] In the above terminal structure, duplexer 325, also known as an antenna duplexer, is used to isolate the transmitted and received RF signals, thereby preventing the local transmitted signal from being transmitted to the receiver. This allows for a shared antenna for both transmission and reception, ensuring that both the received and transmitted signals can function normally. Duplexer 325 can also be considered a relatively specialized bidirectional three-terminal filter, consisting of two sets of bandpass filters at different frequencies: one for the receiving end and one for the transmitting end. This means that the duplexers of different terminals have different operating frequency ranges, including both the uplink and downlink operating frequency ranges.

[0084] The processing capability of the baseband processor 340 determines its data processing speed, and therefore the maximum transmission bandwidth is currently mainly determined based on the baseband processor of the terminal device.

[0085] In conjunction with the terminal device's communication system, the maximum frequency range supported by the duplexer is generally greater than or equal to the baseband processor's maximum transmission bandwidth, ensuring the normal operation of the entire system. Current reporting schemes for terminal device operating capabilities primarily determine terminal device operating capabilities based on the baseband processor's capabilities. This defaults to assuming the duplexer's operating frequency range is equal to the frequency range of a defined specific frequency band, without considering the possibility that the duplexer's specific operating frequency range may be inconsistent with the frequency range of the frequency band. Without an updated standard, this may result in a mismatch between the allocated frequency resources and the frequency range supported by the terminal device.

[0086] In view of this, the present application provides a communication method and device, in which the terminal device reports the supported operating frequency range to the network device based on the working capability of its own duplexer, thereby ensuring that the allocated frequency resources correspond to the frequency range supported by the terminal device, realizing flexible frequency resource scheduling of the network device, and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0087] Figure 4 is a schematic diagram of a communication method provided by an embodiment of the present application. As shown in Figure 4, the method includes steps S410, S420, and S430.

[0088] S410, the terminal device sends first information to the network device, where the first information indicates a first frequency band supported by the terminal device, where the first frequency band includes an uplink frequency band and / or a downlink frequency band; correspondingly, the network device receives the first information.

[0089] The first frequency band may specifically refer to the n28 frequency band or the n83 frequency band, wherein the n28 frequency band includes an uplink frequency band of 703 to 748 MHz and a downlink frequency band of 758 to 803 MHz, and the n83 frequency band includes an uplink frequency band of 703 to 748 MHz.

[0090] S420, the terminal device sends second information to the network device, the second information indicates a working frequency range set, wherein the working frequency range set includes at least one sub-working frequency range, the sub-working frequency range is the working frequency range supported by the terminal device on the first frequency band, and the sub-working frequency range includes an uplink working frequency range and / or a downlink working frequency range; correspondingly, the network device receives the second information.

[0091] The operating frequency range set may specifically be one or more of the following sub-operating frequency ranges:

[0092] (a) The uplink operating frequency range is 703 to 733 MHz, and the downlink operating frequency range is 758 to 788 MHz; and / or

[0093] (b) the uplink operating frequency range is 718 to 748 MHz and the downlink operating frequency range is 773 to 803 MHz; and / or

[0094] (c) the uplink operating frequency range is 703 to 743 MHz and the downlink operating frequency range is 758 to 798 MHz; and / or

[0095] (f) The uplink operating frequency range is 703~748MHz, and the downlink operating frequency range is 758~803MHz.

[0096] S430: The network device allocates frequency resources to the terminal device, where the frequency resources are determined based on the first information and the second information; and correspondingly, the terminal device receives the frequency resources sent from the network device. As a determination method, the frequency resources belong to the first frequency band and to the set of operating frequency ranges.

[0097] In some implementations, the set of operating frequency ranges indicated by the second information is specifically determined based on a duplexer of the terminal device. Thus, the second information can be transmitted between the terminal device and the network device to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the duplexer of the terminal device.

[0098] As an indication method, the second information specifically indicates a duplexer type (duplexerType) of the terminal device, where the duplexer type of the terminal device corresponds to the set of operating frequency ranges. As another indication method, the second information indicates a duplexer capability (duplexerCapability) of the terminal device, where the duplexer capability of the terminal device corresponds to the set of operating frequency ranges.

[0099] In some implementations, the first information and the second information in steps S410 and S420 are sent via terminal device capability information. The terminal capability information may be UECapabilityInformation information. This allows for the reuse of some existing signaling, ensuring compatibility with existing systems and avoiding the additional complexity and cost associated with redefining standards.

[0100] Figure 5 is a schematic diagram of the division of a set of working frequency ranges provided by an embodiment of the present application. Taking the uplink frequency band 703-748 MHz corresponding to the n28 frequency band as an example, the uplink working frequency range a, uplink working frequency range b, uplink working frequency range c and uplink working frequency range f in the four sub-working frequency ranges mentioned above correspond to different starting frequencies and ending frequencies, respectively, and their bandwidths are different. Through the first information and the second information, it can be ensured that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device on the frequency band, thereby realizing flexible frequency resource scheduling and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0101] In some implementations, the terminal device sends third information to the network device, the third information indicating a maximum transmission bandwidth supported by the terminal device; and the network device receives the third information. Upon receiving the third information, the bandwidth of the frequency resources allocated by the network device is less than or equal to the maximum transmission bandwidth.

[0102] The maximum transmission bandwidth may refer to a specific value, such as 30 MHz, 40 MHz, 45 MHz, etc. Thus, after the network device determines the actual operating frequency range supported by the terminal device through the first information and the second information, it can schedule frequency resources of a specific bandwidth for the terminal device within the operating frequency range actually supported by the terminal device to establish good communication.

[0103] In some implementations, the third information may be sent via the supported bandwidth field, which may be uplink supported bandwidth (channelBWs-UL) information and downlink supported bandwidth (channelBWs-DL) information. In some implementations, the third information may also be directly defined in existing protocols.

[0104] The communication method shown in FIG4 is described below with reference to specific embodiments.

[0105] Step 1: The terminal device sends first information to the network device, indicating that the terminal device supports the n28 frequency band. The n28 frequency band specifically includes the uplink frequency band of 703-748 MHz and the downlink frequency band of 758-803 MHz. The first information can be sent via the supported band list (supportedBandList) information.

[0106] Step 2: The terminal device sends second information to the network device, indicating a set of operating frequency ranges, wherein the set of operating frequency ranges includes at least one sub-operating frequency range, and the sub-operating frequency range is an operating frequency range supported by the terminal device in the first frequency band.

[0107] For example, the second information can be sent through information such as supported duplexer frequency range (supportedDuplexerRange). The second information can be represented by a bitmap. For example, the terminal device and the network device, or with reference to the protocol, predefine a bitmap with a length of 4 bits. Starting from the first bit from the left, each bit corresponds to 4 sub-operating frequency ranges [a, b, c, f]. Assuming that the sent bitmap is [0, 0, 0, 1], it means that the terminal device supports the f sub-operating frequency range, that is, the uplink operating frequency range is 703 to 748 MHz, and the downlink operating frequency range is 758 to 803 MHz.

[0108] Step 3: The terminal device sends third information to the network device, where the third information indicates the maximum transmission bandwidth supported by the terminal device.

[0109] The specific third information can be sent through the supported bandwidth field. It is represented in the form of a bitmap. The maximum transmission bandwidth can be determined based on the maximum value in the supported bandwidth field. For example, the bitmap indicates [0,0,0,1]. Starting from the first bit from the left, each bit corresponds to [15,20,25,30] MHz bandwidth, which means that the maximum transmission bandwidth supported by the terminal device is 30 MHz.

[0110] Therefore, after receiving the first information, the second information and the third information, the network device allocates frequency resources with a maximum bandwidth of 30MHz to the terminal device from the sub-working frequency range f supported by the terminal device, rather than the entire n28 frequency band, to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device.

[0111] The above describes the method embodiment of the embodiment of the present application. The corresponding device embodiment is introduced below. The method embodiment and the device embodiment correspond to each other, so the parts not described in detail can refer to each other.

[0112] FIG6 is a schematic diagram of a terminal device provided in an embodiment of the present application. The terminal device may include a sending module 610 and a processing module 620.

[0113] The sending module 610 is used to send first information to the network device, where the first information indicates a first frequency band supported by the terminal device, and the first frequency band includes an uplink frequency band and / or a downlink frequency band.

[0114] The first frequency band may specifically refer to the n28 frequency band or the n83 frequency band, wherein the n28 frequency band includes an uplink frequency band of 703 to 748 MHz and a downlink frequency band of 758 to 803 MHz, and the n83 frequency band includes an uplink frequency band of 703 to 748 MHz.

[0115] The sending module 610 is also used to send second information to the network device, where the second information indicates a working frequency range set, wherein the working frequency range set includes at least one sub-working frequency range, the sub-working frequency range is the working frequency range supported by the terminal device on the first frequency band, and the sub-working frequency range includes an uplink working frequency range and / or a downlink working frequency range.

[0116] The operating frequency range set may specifically be one or more of the following sub-operating frequency ranges:

[0117] (a) The uplink operating frequency range is 703 to 733 MHz, and the downlink operating frequency range is 758 to 788 MHz; and / or

[0118] (b) the uplink operating frequency range is 718 to 748 MHz and the downlink operating frequency range is 773 to 803 MHz; and / or

[0119] (c) the uplink operating frequency range is 703 to 743 MHz and the downlink operating frequency range is 758 to 798 MHz; and / or

[0120] (f) The uplink operating frequency range is 703~748MHz, and the downlink operating frequency range is 758~803MHz.

[0121] In some implementations, the sending module 610 is further configured to send third information indicating a maximum transmission bandwidth supported by the terminal device, wherein the maximum transmission bandwidth may be a specific value, such as 30 MHz, 40 MHz, 45 MHz, etc.

[0122] The processing module 620 may be used to configure the first information, the second information, and the third information.

[0123] In some implementations, the set of operating frequency ranges indicated by the second information is specifically determined based on a duplexer of the terminal device. Thus, the second information can be transmitted between the terminal device and the network device to ensure that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the duplexer of the terminal device.

[0124] As an indication method, the second information specifically indicates a duplexer type (duplexerType) of the terminal device, where the duplexer type of the terminal device corresponds to the set of operating frequency ranges. As another indication method, the second information indicates a duplexer capability (duplexerCapability) of the terminal device, where the duplexer capability of the terminal device corresponds to the set of operating frequency ranges.

[0125] In some implementations, the third information may be sent through the supported bandwidth (field, which may include uplink supported bandwidth (channelBWs-UL) information and downlink supported bandwidth (channelBWs-DL) information. In some implementations, the third information may also be directly defined in the existing protocol.

[0126] In some implementations, the terminal device shown in FIG6 further includes a receiving module for receiving frequency resources sent from the network device, where the frequency resources belong to the first frequency band and to a set of operating frequency ranges.

[0127] When the sending module 610 sends the third information, the bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth.

[0128] In the terminal device shown in Figure 6, by sending the second information, it can be ensured that the frequency resources allocated by the network device to the terminal device correspond to the frequency range supported by the terminal device, thereby realizing flexible frequency resource scheduling and meeting the needs of establishing good and secure communication between the network device and the terminal device.

[0129] FIG7 is a schematic diagram of a network device provided in an embodiment of the present application. The network device may include a receiving module 710 and a processing module 720.

[0130] The receiving module 710 is used to receive first information sent from a terminal device, where the first information indicates a first frequency band supported by the terminal device, where the first frequency band includes an uplink frequency band and / or a downlink frequency band.

[0131] The first frequency band may specifically refer to the n28 frequency band or the n83 frequency band, wherein the n28 frequency band includes an uplink frequency band of 703 to 748 MHz and a downlink frequency band of 758 to 803 MHz, and the n83 frequency band includes an uplink frequency band of 703 to 748 MHz.

[0132] The receiving module 710 is also used to receive second information sent from the terminal device, where the second information indicates a working frequency range set, wherein the working frequency range set includes at least one sub-working frequency range, and the sub-working frequency range is a working frequency range supported by the terminal device on the first frequency band, and the sub-working frequency range includes an uplink working frequency range and / or a downlink working frequency range.

[0133] The operating frequency range set may specifically be one or more of the following sub-operating frequency ranges:

[0134] (a) The uplink operating frequency range is 703 to 733 MHz, and the downlink operating frequency range is 758 to 788 MHz; and / or

[0135] (b) the uplink operating frequency range is 718 to 748 MHz and the downlink operating frequency range is 773 to 803 MHz; and / or

[0136] (c) the uplink operating frequency range is 703 to 743 MHz and the downlink operating frequency range is 758 to 798 MHz; and / or

[0137] (f) The uplink operating frequency range is 703~748MHz, and the downlink operating frequency range is 758~803MHz.

[0138] In some implementations, the receiving module 710 is further configured to receive third information sent from the terminal device, where the third information indicates a maximum transmission bandwidth supported by the terminal device.

[0139] The processing module 720 is configured to allocate frequency resources to the terminal device, wherein the frequency resources are determined according to the first information and the second information. As a determination method, the frequency resources belong to the first frequency band and belong to the operating frequency range set.

[0140] When the third information is received, the bandwidth of the frequency resources allocated by the network device is less than or equal to the maximum transmission bandwidth.

[0141] FIG8 is a system diagram of a terminal device and a network device provided in an embodiment of the present application.

[0142] The terminal device includes at least one processor 801 and at least one transceiver 803. Optionally, the terminal device may further include at least one memory 802, at least one output device 804, or at least one input device 805.

[0143] The processor 801, the memory 802, and the transceiver 803 are connected via a communication line. The communication line may include a path for transmitting information between the above components.

[0144] The processor 801 may be a general-purpose central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor. In a specific implementation, as an embodiment, the processor 801 may also include multiple CPUs, and the processor 801 may be a single-core processor or a multi-core processor. The processor here may refer to one or more devices, circuits, or processing cores for processing data.

[0145] The memory 802 may be a device having a storage function. For example, it may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, a laser disc, an optical disc, a digital versatile disc, a Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 802 may exist independently and be connected to the processor 801 via a communication line. The memory 802 may also be integrated with the processor 801.

[0146] The memory 802 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 801. Specifically, the processor 801 is used to execute the computer-executable instructions stored in the memory 802, thereby implementing the frequency resource scheduling described in the embodiment of the present application.

[0147] Alternatively, optionally, in an embodiment of the present application, the processor 801 may also perform functions related to the processing of frequency resource scheduling provided in the following embodiments of the present application, and the transceiver 803 is responsible for communicating with other devices or communication networks, which is not specifically limited in the embodiments of the present application.

[0148] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code or computer program code, which is not specifically limited in the embodiments of the present application.

[0149] The transceiver 803 can be any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, RAN, or wireless local area networks (WLAN). The transceiver 803 includes a transmitter (Tx) and a receiver (Rx).

[0150] Output device 804 communicates with processor 801 and can display information in a variety of ways. For example, output device 804 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector.

[0151] The input device 805 communicates with the processor 801 and can accept user input in various ways. For example, the input device 505 can be a mouse, keyboard, touch screen device, or sensor device.

[0152] [Corrected 14.08.2024 according to Rule 91] The network device includes at least one processor 901, at least one transceiver 903 and at least one network interface 904. Optionally, the network device may also include at least one memory 902. The processor 901, the memory 902, the transceiver 903 and the network interface 904 are connected via a communication line. The network interface 904 is used to connect to the core network device through a link (for example, an S1 interface), or to connect to the network interface of other network devices through a wired or wireless link (for example, an X2 interface) (not shown in Figure 8), and this embodiment of the application does not specifically limit this. In addition, the relevant description of the processor 901, the memory 902 and the transceiver 903 can refer to the description of the processor 901, the memory 902 and the transceiver 903 in the terminal device, which will not be repeated here.

[0153] In addition, an embodiment of the present application also provides a chip that obtains instructions and executes the instructions to implement the above method.

[0154] Optionally, as an implementation manner, the chip includes a processor and a communication interface, and the processor reads instructions stored in the memory through the communication interface to execute the above method.

[0155] Optionally, as an implementation manner, the chip may further include a memory, in which instructions are stored, and the processor is used to execute the instructions stored in the memory. When the instructions are executed, the processor is used to execute the above method.

[0156] An embodiment of the present application further provides a computer-readable storage medium, which stores instructions used in the method in the above method embodiment.

[0157] An embodiment of the present application also provides a computer program product comprising instructions for implementing the method in the above method embodiment.

[0158] As used in this specification, the terms "component," "module," "system," and the like are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component on a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0159] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0160] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0161] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0162] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0163] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0164] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0165] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: Sending first information to the network device, where the first information indicates a first frequency band supported by the terminal device, where the first frequency band includes an uplink frequency band and / or a downlink frequency band; Sending second information to the network device, where the second information indicates a set of operating frequency ranges, where the set of operating frequency ranges includes at least one sub-operating frequency range, where the sub-operating frequency range is an operating frequency range supported by the terminal device on the first frequency band, and where the sub-operating frequency range includes an uplink operating frequency range and / or a downlink operating frequency range; wherein: The uplink frequency band is 703-748 MHz, and the downlink frequency band is 758-803 MHz; The uplink operating frequency range is 703-733 MHz, and the downlink operating frequency range is 758-788 MHz; and / or The uplink operating frequency range is 718-748 MHz, and the downlink operating frequency range is 773-803 MHz; and / or The uplink operating frequency range is 703-743 MHz, and the downlink operating frequency range is 758-798 MHz; and / or The uplink operating frequency range is 703-748 MHz, and the downlink operating frequency range is 758-803 MHz.

2. The method according to claim 1, characterized in that The second information is determined according to a duplexer of the terminal device.

3. The method according to claim 1 or 2, characterized in that: in: The second information indicates a duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to the operating frequency range set; or The second information indicates a duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to the set of operating frequency ranges.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Receive frequency resources allocated by the network device, where the frequency resources belong to the first frequency band and to the working frequency range set.

5. The method according to claim 4, characterized in that The method further comprises: Sending third information to the network device, wherein the third information indicates a maximum transmission bandwidth supported by the terminal device; The bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth.

6. The method according to any one of claims 1 to 5, characterized in that The first information and the second information are sent via terminal device capability information.

7. A communication method, characterized in that: include: Receiving first information sent from a terminal device, where the first information indicates a first frequency band supported by the terminal device, where the first frequency band includes an uplink frequency band and / or a downlink frequency band; receiving second information sent from the terminal device, where the second information indicates an operating frequency range set, wherein the operating frequency range set includes at least one sub-operating frequency range, the sub-operating frequency range is an operating frequency range supported by the terminal device on the first frequency band, and the sub-operating frequency range includes an uplink operating frequency range and / or a downlink operating frequency range; Allocate frequency resources for the terminal device, where the frequency resources are determined according to the first information and the second information; The uplink frequency band is 703-748 MHz, and the downlink frequency band is 758-803 MHz; The uplink operating frequency range is 703-733 MHz, and the downlink operating frequency range is 758-788 MHz; and / or The uplink operating frequency range is 718-748 MHz, and the downlink operating frequency range is 773-803 MHz; and / or The uplink operating frequency range is 703-743 MHz, and the downlink operating frequency range is 758-798 MHz; and / or The uplink operating frequency range is 703-748 MHz, and the downlink operating frequency range is 758-803 MHz.

8. The method according to claim 7, characterized in that The second information is determined according to a duplexer of the terminal device.

9. The method according to claim 7 or 8, characterized in that: in: The second information indicates a duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to the operating frequency range set; or The second information indicates a duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to a set of operating frequency ranges.

10. The method according to any one of claims 7 to 9, characterized in that The frequency resource belongs to the first frequency band and to the working frequency range set.

11. The method according to any one of claims 7 to 10, characterized in that The method further comprises: receiving third information sent from the terminal device, wherein the third information indicates a maximum transmission bandwidth supported by the terminal device; The bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth.

12. The method according to any one of claims 7 to 11, characterized in that The first information and the second information are received via terminal device capability information.

13. A terminal device, characterized in that: include: A sending module, configured to send first information to a network device, where the first information indicates a first frequency band supported by the terminal device, where the first frequency band includes an uplink frequency band and / or a downlink frequency band; The sending module is further used to send second information to the network device, where the second information indicates a working frequency range set, wherein the working frequency range set includes at least one sub-working frequency range, the sub-working frequency range is a working frequency range supported by the terminal device on the first frequency band, and the sub-working frequency range includes an uplink working frequency range and / or a downlink working frequency range; The uplink frequency band is 703-748 MHz, and the downlink frequency band is 758-803 MHz; The uplink operating frequency range is 703-733 MHz, and the downlink operating frequency range is 758-788 MHz; and / or The uplink operating frequency range is 718-748 MHz, and the downlink operating frequency range is 773-803 MHz; and / or The uplink operating frequency range is 703-743 MHz, and the downlink operating frequency range is 758-798 MHz; and / or The uplink operating frequency range is 703-748 MHz, and the downlink operating frequency range is 758-803 MHz.

14. The terminal device according to claim 13, characterized in that: The second information is determined according to a duplexer of the terminal device.

15. The terminal device according to claim 13 or 14, characterized in that: in: The second information indicates a duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to the operating frequency range set; or The second information indicates a duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to the set of operating frequency ranges.

16. The terminal device according to any one of claims 13 to 15, characterized in that: The terminal device also includes a receiving module: The receiving module is used to receive frequency resources sent from the network device, where the frequency resources belong to the first frequency band and to the working frequency range set.

17. The terminal device according to claim 16, characterized in that: The sending module is further used to send third information to the network device, where the third information indicates a maximum transmission bandwidth supported by the terminal device, wherein the bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth.

18. The terminal device according to any one of claims 13 to 17, characterized in that: The sending module sends the first information and the second information through terminal device capability information.

19. A network device, characterized in that: include: A receiving module, configured to receive first information, where the first information indicates a first frequency band supported by the terminal device, where the first frequency band includes an uplink frequency band and / or a downlink frequency band; The receiving module is further used to receive second information sent from the terminal device, where the second information indicates a working frequency range set, wherein the working frequency range set includes at least one sub-working frequency range, the sub-working frequency range is a working frequency range supported by the terminal device on the first frequency band, and the sub-working frequency range includes an uplink working frequency range and / or a downlink working frequency range; a processing module, configured to allocate frequency resources to the terminal device, wherein the frequency resources are determined according to the first information and the second information; The uplink frequency band is 703-748 MHz, and the downlink frequency band is 758-803 MHz; The uplink operating frequency range is 703-733 MHz, and the downlink operating frequency range is 758-788 MHz; and / or The uplink operating frequency range is 718-748 MHz, and the downlink operating frequency range is 773-803 MHz; and / or The uplink operating frequency range is 703-743 MHz, and the downlink operating frequency range is 758-798 MHz; and / or The uplink operating frequency range is 703-748 MHz, and the downlink operating frequency range is 758-803 MHz.

20. The network device according to claim 19, characterized in that: The second information is determined according to a duplexer of the terminal device.

21. The network device according to claim 19 or 20, characterized in that: in: The second information indicates a duplexer type of the terminal device, and the duplexer type of the terminal device corresponds to the operating frequency range set; or The second information indicates a duplexer capability of the terminal device, and the duplexer capability of the terminal device corresponds to a set of operating frequency ranges.

22. The network device according to any one of claims 19 to 21, characterized in that: The frequency resource belongs to the first frequency band and to the working frequency range set.

23. The network device according to any one of claims 19 to 22, characterized in that: The receiving module is further configured to receive third information sent from the terminal device, wherein the third information indicates a maximum transmission bandwidth supported by the terminal device; The bandwidth of the frequency resource is less than or equal to the maximum transmission bandwidth.

24. The network device according to any one of claims 19 to 23, characterized in that: The receiving module receives the first information and the second information through the terminal device capability information.

25. A chip, characterized in that: The chip comprises a processor, the processor is coupled to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the chip executes the method according to any one of claims 1 to 12.

26. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction. When the computer program or instruction is executed by a processor, the method according to any one of claims 1 to 12 is implemented.

27. A computer product, characterized in that: When it is run on a computer, the method according to any one of claims 1 to 12 is executed.

28. A communication system, characterized in that: The method comprises a terminal device and a network device, wherein the terminal device is used to execute the method according to any one of claims 1 to 6, and the network device is used to execute the method according to any one of claims 7 to 12.

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