Wireless communication method, and device, chip, storage medium and program product

Abstract

Provided in the present application are a wireless communication method, and a device, a chip, a storage medium and a program product. The method comprises: a terminal device sending first information, wherein the first information is used for indicating one or more first frequency band groups supported by the terminal device.

Description

Wireless communication methods and devices, chips, storage media, and software products Technical Field

[0001] This application relates to the field of mobile communication technology, specifically to a wireless communication method and device, chip, storage medium, and program product. Background Technology

[0002] Carrier aggregation (CA) is a technique that combines multiple spectrum carriers, allowing them to operate simultaneously to achieve a larger aggregated spectrum bandwidth, thereby enabling higher data transmission rates and more stable connections. There are two types of carrier aggregation: intra-band carrier aggregation and inter-band carrier aggregation. Intra-band carrier aggregation aggregates channels within the same frequency band, while inter-band carrier aggregation aggregates channels across different frequency bands. Summary of the Invention

[0003] This application provides a wireless communication method and device, a chip, a storage medium, and a program product.

[0004] The wireless communication method provided in this application includes:

[0005] The terminal device sends first information, which indicates one or more first frequency band groups supported by the terminal device.

[0006] The wireless communication method provided in this application includes:

[0007] The network device receives first information sent by the terminal device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0008] The terminal device provided in this application embodiment includes:

[0009] The first communication unit is configured to send first information, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0010] The network device provided in this application embodiment includes:

[0011] The second communication unit is configured to receive first information sent by the terminal device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0012] The communication device provided in this application embodiment can be a network device or a terminal device as described above. The communication device includes a transceiver, a processor, and a memory. The memory stores computer programs, and the processor calls and runs the computer programs stored in the memory to perform the aforementioned wireless communication method in conjunction with the transceiver.

[0013] The chip provided in this application embodiment is used to implement the above-described wireless communication method.

[0014] Specifically, the chip includes a processor for calling and running a computer program from a memory, causing a device equipped with the chip to perform the aforementioned wireless communication method.

[0015] The computer-readable storage medium provided in this application embodiment is used to store a computer program that causes a computer to execute the above-described wireless communication method.

[0016] The computer program product provided in this application includes computer program instructions that cause a computer to execute the above-described wireless communication method.

[0017] The computer program provided in this application embodiment, when run on a computer, causes the computer to execute the above-described wireless communication method.

[0018] The above technical solution groups the frequency bands supported by the terminal into frequency band groups and reports the supported frequency band groups to the network device. This allows the network device to configure the frequency bands for the terminal device based on the frequency band groups supported by the terminal device, thereby realizing the combination of frequency bands in the time domain and frequency domain, which can improve the uplink and / or downlink capacity of the network while also increasing the transmission rate. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0021] Figure 2 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0022] Figure 3 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0023] Figure 4 is a schematic diagram of an optional radio frequency architecture provided in an embodiment of this application;

[0024] Figure 5 is a schematic diagram of an optional radio frequency architecture provided in an embodiment of this application;

[0025] Figure 6 is a schematic diagram of an optional radio frequency architecture provided in an embodiment of this application;

[0026] Figure 7 is a schematic diagram of the spectrum distribution provided in an embodiment of this application;

[0027] Figure 8 is a schematic diagram of the spectrum distribution provided in an embodiment of this application;

[0028] Figure 9 is a schematic diagram of the spectrum distribution provided in an embodiment of this application;

[0029] Figure 10 is a schematic diagram of the frequency spacing of the uplink carrier center provided in an embodiment of this application;

[0030] Figure 11 is a schematic diagram of the frequency spacing of the uplink carrier center provided in an embodiment of this application;

[0031] Figure 12 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0032] Figure 13 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0033] Figure 14 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0034] Figure 15 is a schematic diagram of frequency band division provided in an embodiment of this application;

[0035] Figure 16 is a schematic diagram of frequency band division provided in an embodiment of this application;

[0036] Figure 17 is a schematic diagram of frequency band division provided in an embodiment of this application;

[0037] Figure 18 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0038] Figure 19 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0039] Figure 20 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0040] Figure 21 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0041] Figure 22 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0042] Figure 23 is a schematic diagram of an optional radio frequency architecture provided in an embodiment of this application;

[0043] Figure 24 is a schematic diagram of an optional structure of the terminal device provided in an embodiment of this application;

[0044] Figure 25 is a schematic diagram of an optional structure of a network device provided in an embodiment of this application;

[0045] Figure 26 is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0046] Figure 27 is a schematic structural diagram of a chip according to an embodiment of this application;

[0047] Figure 28 is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0049] Communication system scenarios include Terrestrial Networks (TN) and NTN. NTN typically uses satellite communication to provide communication services to terrestrial users. Current NTN systems include NR-NTN and IoT-NTN systems, and other NTN systems may be included in the future.

[0050] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in Figure 1, the communication system 100 may include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 via an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

[0051] It should be understood that the embodiments of this application are only illustrated by way of example with communication system 100, but the embodiments of this application are not limited thereto. That is to say, the technical solutions of the embodiments of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

[0052] In the communication system 100 shown in Figure 1, network device 120 may be an access network device that communicates with terminal device 110. The access network device can provide communication coverage for a specific geographical area and can communicate with terminal device 110 (e.g., UE) located within that coverage area.

[0053] Terminal device 110 can be any terminal device, including but not limited to terminal devices that are connected to network device 120 or other terminal devices via wired or wireless connections.

[0054] Terminal device 110 can be used for device-to-device (D2D) communication.

[0055] The wireless communication system 100 may further include a core network device 130 that communicates with a base station. This core network device 130 may be a 5G core network (5G Core, 5GC) device. Optionally, the core network device 130 may also be an Evolved Packet Core (EPC) device for an LTE network. During network evolution, the aforementioned core network device may be called by other names, or new network entities may be formed by dividing the functions of the core network; this embodiment does not impose any limitations on this.

[0056] The various functional units in the communication system 100 can also establish connections and communicate with each other through the next generation (NG) interface.

[0057] Figure 1 exemplarily illustrates a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices, and each base station may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

[0058] NTN typically uses satellite communication to provide communication services to terrestrial users. Compared to terrestrial cellular network communication, satellite communication has many unique advantages.

[0059] NTN technology can be combined with various communication systems. For example, NTN technology can be combined with NR systems to form an NR-NTN system. As another example, NTN technology can be combined with Internet of Things (IoT) systems to form an IoT-NTN system. As further examples, an IoT-NTN system can include NB-IoT-NTN systems and eMTC-NTN systems.

[0060] Figure 2 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application.

[0061] As shown in Figure 2, the system includes a terminal device 201 and a satellite 202, which can communicate wirelessly. The network formed between the terminal device 201 and the satellite 202 can also be called an NTN. In the architecture of the communication system shown in Figure 2, the satellite 202 can function as a base station, and the terminal device 201 and the satellite 202 can communicate directly. In this system architecture, the satellite 202 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple network devices 202, and the coverage area of ​​each network device 202 may include other numbers of terminal devices; this application does not limit this aspect.

[0062] Figure 3 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application.

[0063] As shown in Figure 3, the system includes a terminal device 201, a satellite 202, and a base station 203. Wireless communication is possible between the terminal device 201 and the satellite 202, and communication is possible between the satellite 202 and the base station 203. The network formed by the terminal device 201, satellite 202, and base station 203 can also be called an NTN. In the architecture of the communication system shown in Figure 3, the satellite 202 may not have the function of a base station; communication between the terminal device 201 and the base station 203 requires relaying through the satellite 202. In this system architecture, the base station 203 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple network devices 203, and the coverage area of ​​each network device 203 may include other numbers of terminal devices; this application does not limit this. The network device 203 may be the network device 120 in Figure 1.

[0064] It should be noted that Figures 1 to 3 are merely illustrative examples illustrating the system to which this application applies. Of course, the methods shown in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. It should also be understood that "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a related relationship. For example, A instructing B can mean that A directly instructs B, for example, B can be obtained through A; it can also mean that A indirectly instructs B, for example, A instructs C, B can be obtained through C; or it can mean that there is a related relationship between A and B. It should also be understood that "correspondence" mentioned in the embodiments of this application can indicate a direct or indirect correspondence between two things, or an related relationship between two things, or a relationship of instruction and being instructed, configuration and being configured, etc. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method. For example, predefined can refer to those defined in a protocol. It should also be understood that in the embodiments of this application, the "protocol" can refer to standard protocols in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this.

[0065] To facilitate understanding of the technical solutions of the embodiments of this application, the relevant technologies of the embodiments of this application are described below. The following relevant technologies are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and they all fall within the protection scope of the embodiments of this application.

[0066] Carrier aggregation essentially combines two or more physically separate but logically integrated connections into a single, larger, and faster connection. Therefore, carrier aggregation increases data transmission rates by bundling multiple frequency-domain carrier signals into a wider bandwidth, while simultaneously operating in the time domain. For example, bundling two 20MHz carriers into a 40MHz bandwidth effectively expands the available bandwidth.

[0067] Carrier aggregation technology plays a crucial role, which is reflected in the following aspects:

[0068] Improve data rates: Meet users' needs for high-bandwidth applications such as high-definition video and VR / AR.

[0069] Improve spectrum efficiency: Make effective use of existing spectrum resources and increase spectrum utilization.

[0070] Enhanced coverage: In areas with weak signal coverage, multiple carrier signals can be combined to enhance signal strength and expand coverage.

[0071] Enhanced user experience: Provides faster web browsing speeds, smoother video playback, and a more stable gaming experience.

[0072] Support more user connections: Increase system capacity and support more users to access the network simultaneously.

[0073] Inter-band carrier aggregation requires simultaneous communication across multiple frequency bands. To achieve this aggregation, the RF front-end needs to support multiple independent transmit / receive paths. These paths typically rely on multiplexing filters to share an antenna and RF switches to switch between different frequency bands and paths to achieve different levels of aggregation. Examples of multiplexing filters include:

[0074] A diplexer (also known as a duplexer) is used to isolate two frequency bands.

[0075] Triplexer (also known as triplexer): Used to support three frequency bands.

[0076] More sophisticated multiplexing filters: As the number of carriers increases, more frequency band aggregation requires more complex multiplexers, such as quad-multiplexers (also known as quad-multiplexers), quintuple multiplexers (also known as quintupleers), or even higher-order multiplexers to support parallel transmission of multiple frequency bands.

[0077] For some frequency bands where multiplexed filters cannot be used to share antennas, physically separate antennas can be used. However, this is not conducive to terminal implementation because multiple antennas will occupy a large area, which is not conducive to board layout design.

[0078] In terminal implementation, most frequency band standards require a one-transmit, two-receive configuration. The terminal can be configured with two antennas: a main antenna for both transmission and reception, where frequency division multiplexing (FDD) bands use a duplexer to connect transmission and reception to the main antenna, and time division multiplexing (TDD) bands use a switching time division method to connect transmission and reception to the main antenna; and a diversity antenna for receive diversity, meaning it only receives the second channel. Multiple frequency bands are then multiplexed using a multiplexing filter to reuse these two antennas.

[0079] The multiplexing filters used for carrier aggregation across different frequency bands vary, as do the implementation difficulties. Based on the differences in implementation difficulty and the multiplexing filters used, carrier aggregation can be broadly classified into five categories:

[0080] A1: The combination of low-frequency band and high-frequency band has no harmonic and intermodulation problems;

[0081] • A2: The combination of low-frequency band and high-frequency band has harmonic and / or intermodulation problems;

[0082] • A3: There are no intermodulation issues with combinations of low-frequency bands + low-frequency bands or high-frequency bands + high-frequency bands;

[0083] • A4: Combinations of low-frequency bands + low-frequency bands or high-frequency bands + high-frequency bands have intermodulation problems;

[0084] • A5: Other aggregation combinations that do not belong to the A1-A4 groups.

[0085] The implementation methods for low-frequency and high-frequency carrier aggregation are shown in Figure 4, and the implementation methods for low-frequency and low-frequency (or high-frequency and high-frequency) carrier aggregation are shown in Figure 5. The implementation methods for FDD high-frequency and TDD high-frequency carrier aggregation are shown in Figure 6. A duplexer is used to separate or combine received and transmitted signals in the same or different frequency bands, ensuring that received and transmitted signals can operate simultaneously.

[0086] Different multiplexing filters have different implementation difficulties. Two-way multiplexing filters that connect low-frequency and high-frequency bands and three-way multiplexing filters that connect high, medium and low-frequency bands are relatively easy to implement, while four-way multiplexing filters that connect two low-frequency bands or high-frequency bands are more difficult to implement, especially for frequency bands less than 1 GHz.

[0087] The frequency band combinations shown in the example below are difficult to implement using three-way or four-way multiplexing filters to connect the two frequency bands. If a separate antenna scheme is used, at least three or four antennas are required, which is very disadvantageous for terminal implementation.

[0088] Figure 7 shows the spectrum of the FDD low-frequency band and the downlink auxiliary (SDL) band below 1 GHz. As shown in Figure 7, the frequency spacing between some low-frequency bands is very small. For example, there is only a 1 MHz frequency spacing between the uplink spectrum of band n13 and the uplink spectrum of band n14, only a 5 MHz frequency spacing between the uplink spectrum of band n8 and the downlink spectrum of band n18, and only a 2 MHz spacing between the uplink spectrum of band n26 and the uplink spectrum of band n106. With such small frequency spacing, it is virtually impossible to achieve multi-band aggregation using multiplexing filters.

[0089] The problems mentioned above that exist in the low-frequency band below 1GHz will also exist in the mid-frequency band around 1.5GHz and the high-frequency band around 2GHz.

[0090] Figure 8 shows the spectrum of the mid-frequency band around 1.5 GHz. As shown in Figure 8, the downlink of n74 and the uplink of n24 in the mid-frequency band have only a 7 MHz spectral interval, and the uplink and downlink of n74 basically overlap with the spectra of TDD bands n50 and n51.

[0091] Figure 9 shows the spectrum of the high-frequency band around 2 GHz. As shown in Figure 9, the spectra of many frequency bands in the high-frequency band overlap with each other. For example, the uplink of frequency band n3 overlaps with the uplink of frequency band n66, and the uplink spectra of n3 and n66 are adjacent to the uplink spectrum of n70 without frequency spacing. The uplink of n2 overlaps with the downlink of n3, the downlink of n2 overlaps with the uplink of n1, and overlaps with the uplink of n65.

[0092] For the FDD band, the default frequency spacing between the transmit (TX) channel (carrier center frequency) and the receive (RX) channel (carrier center frequency) is shown in Table 1.

[0093] For frequency band n1, as shown in Figure 10, the frequency interval between the uplink and downlink carrier centers is 190MHz.

[0094] For TDD bands, the uplink and downlink carrier centers of the operating band must remain at the same frequency point. That is to say, when the TDD band switches from the TX channel to the RX channel, its carrier center remains unchanged, but the bandwidth can be changed.

[0095] For frequency band n39, as shown in Figure 11, the uplink and downlink carrier centers remain consistent.

[0096] For carrier aggregation of low-frequency band + low-frequency band, mid-frequency band + mid-frequency band, or high-frequency band + high-frequency band, it is difficult to implement a three-way or four-way multiplexing filter to connect the two frequency bands. If a separate antenna scheme is used, at least three or four antennas are required, which is also difficult for the terminal to implement. It can be seen that the RF implementation architecture of the terminal has difficulty in implementing carrier aggregation for certain close frequency bands.

[0097] To facilitate understanding of the technical solutions of the embodiments of this application, the technical solutions of this application are described in detail below through specific embodiments. The above-mentioned related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0098] This application provides a wireless communication method applied to a terminal device, as shown in Figure 12, including:

[0099] S1201. The terminal device sends first information, which is used to indicate one or more first frequency band groups supported by the terminal device.

[0100] This application provides a wireless communication method applied to a network device, as shown in Figure 13, including:

[0101] S1301. The network device receives first information sent by the terminal device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0102] This application provides a wireless communication method applied to a wireless communication system including terminal devices and network devices, as shown in FIG14, including:

[0103] S1401, The terminal device sends first information to the network device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0104] The wireless communication methods shown in Figures 12, 13, or 14 are described below.

[0105] The terminal device supports one or more first frequency band groups and reports the supported first frequency band groups as terminal capabilities to the network device through first information.

[0106] In one embodiment, the first information can be reported in the form of a list of frequency band groups, including one or more first frequency band groups.

[0107] The first information may include the group identifier of the first frequency band group supported by the terminal device and the frequency band identifier of the frequency bands included in the first frequency band group.

[0108] The first information may include the frequency band identifiers of the frequency bands included in each of the one or more first frequency band groups supported by the terminal device, with the frequency band identifiers being divided based on the first frequency band group to which they belong.

[0109] The first frequency band group can be understood as a group of frequency bands supported by the terminal device, or a group of frequency bands supported by the terminal device. A frequency band group may include one or more frequency bands, or the first frequency band group is a collection of one or more frequency bands.

[0110] In one example, if the terminal device supports the following first frequency band group: BandGroup1: {n8, n20}, then the first information indicates BandGroup1.

[0111] In one example, if the terminal device supports the following first frequency band groups: frequency band group 1: {frequency band 1, frequency band 2}, frequency band group 2: {frequency band 3, frequency band 4}, and frequency band group 3: {frequency band 1, frequency band 3}, then the first information indicates: frequency band group 1, frequency band group 2, and frequency band group 3.

[0112] In this application embodiment, the frequency band group can be replaced by other descriptions such as frequency band set, and this application embodiment does not limit it.

[0113] In some embodiments, frequency bands within the first frequency band group are time-division multiplexed. It is understood that frequency bands within the first frequency band group may be switched at different times.

[0114] In one example, the first frequency band group includes the following frequency bands: frequency band 1, frequency band 2 and frequency band 3. Then frequency band 1 and frequency band 2 are time-division multiplexed, frequency band 2 and frequency band 3 are time-division multiplexed, and frequency band 1 and frequency band 3 are time-division multiplexed.

[0115] In some embodiments, frequency bands within the first frequency band group are selected or carriers are selected by time-division switching.

[0116] In this embodiment of the application, for time-division multiplexed frequency bands, they can be connected to the antenna in a time-division manner via a switch.

[0117] In some embodiments, frequency division multiplexing is performed between different first frequency band groups. It is understood that frequency bands between different first frequency band groups may be used simultaneously.

[0118] In one example, the following first frequency band groups are included: Frequency band group 1: {Frequency band 1, Frequency band 2}, Frequency band group 2: {Frequency band 3, Frequency band 4}, Frequency band group 4: {Frequency band 4, Frequency band 5}. Then, frequency band 1 and frequency band 2 are time-division multiplexed, frequency band 3 and frequency band 4 are time-division multiplexed, frequency band 4 and frequency band 5 are time-division multiplexed, frequency band 1 and frequency band 4 are frequency-division multiplexed, frequency band 2, frequency band 3, and frequency band 5 are frequency-division multiplexed, frequency band 3 and frequency band 5 are frequency-division multiplexed, and frequency band 1 and frequency band 5 are frequency-division multiplexed.

[0119] In some embodiments, frequency bands between different first frequency band groups can be reused in the frequency domain through frequency band combination.

[0120] In some embodiments, the frequency band combination may include one or more of carrier aggregation, supplementary uplink (SUL), and dual connectivity. Dual connectivity may include one or more of Evolved Universal Terrestrial Radio Access (E-UTRA)-NR dual connectivity (EN-DC), NR-E-UTRA dual connectivity (NE-DC), NR-NR dual connectivity (NR-DC), and dual connectivity between future radio access networks and existing standards.

[0121] In this embodiment of the application, for frequency division multiplexing bands, multiplexing filters can be connected to the antenna.

[0122] Understandably, the frequency bands supported by the terminal device are divided into one or more first frequency band groups. The terminal device reports the frequency bands in the form of first frequency band groups. The network device determines which frequency bands supported by the terminal device are time-division multiplexed and which frequency bands are frequency-division multiplexed based on the first frequency band groups reported by the terminal device.

[0123] In some embodiments, the first frequency band group is a subset of the frequency bands supported by the terminal device.

[0124] In this embodiment, the frequency bands supported by the terminal device are grouped into frequency band groups, and the supported frequency band groups are reported to the network device. This enables the network device to configure the frequency bands for the terminal device based on the frequency band groups supported by the terminal device, thereby realizing the combination of frequency bands in the time domain and frequency bands in the frequency domain. This improves the uplink and / or downlink capacity of the network while also increasing the transmission rate.

[0125] In this embodiment, time division multiplexing is used between frequency bands within the same frequency band group, and frequency division multiplexing is used between frequency bands in different frequency band groups, thereby realizing the combination of time-domain carriers and frequency-domain carriers, which can improve the uplink and / or downlink capacity of the network while also increasing the transmission rate.

[0126] In some embodiments, the first frequency band group is a subset of one of a plurality of second frequency band groups.

[0127] In some embodiments, inter-band time division multiplexing is used within the second frequency band group, and inter-band frequency division multiplexing is used between different second frequency band groups.

[0128] In some embodiments, the plurality of second frequency band groups may be predefined frequency band groups. In some embodiments, the plurality of second frequency band groups may be configured by the network device.

[0129] The second frequency band group can be a frequency band group obtained by dividing all supported frequency bands into frequency band groups. Here, all supported frequency bands include or are divided into multiple second frequency band groups. It is understood that all supported frequency bands include or are divided into a first number of second frequency band groups, where the first number is greater than 1.

[0130] Time-division multiplexing is supported between frequency bands within the second frequency band group, and frequency-division multiplexing is supported between frequency bands in different second frequency band groups. For an understanding of time-division multiplexing and frequency-division multiplexing, please refer to the description of the first frequency band group, which will not be repeated here.

[0131] In some embodiments, the first frequency band group consists of a first frequency band in the second frequency band group, wherein the first frequency band is a frequency band supported by the terminal device.

[0132] The terminal device selects and reports the supported frequency bands from multiple second frequency band groups based on the frequency bands it supports. Frequency bands belonging to the same second frequency band group are located in the same first frequency band group, and frequency bands belonging to different second frequency band groups are located in different first frequency band groups.

[0133] In one example, the following second frequency band groups exist: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, and {n14, n20, n28}. The terminal device supports the following frequency bands: n8, n20, n28, and n71. Based on the second frequency band group to which the frequency bands supported by the terminal device belong, the following first frequency band group is determined: {n28, n71}, {n8, n20}, and {n20, n28}. Among them, {n28, n71} is a subset of {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n8, n20} is a subset of {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, and {n20, n28} is a subset of {n14, n20, n28}.

[0134] In one example, the following second frequency band groups exist: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, and {n14, n20, n28}. If the terminal device supports the following frequency bands: n14, n20, and n28, then based on the second frequency band group to which the supported frequency bands belong, the following first frequency band group is determined: {n14, n20, n28}.

[0135] Here, the frequency band designation n can also be replaced by other designations such as F. For example, n12 can also be equivalent to F12. In this embodiment, the representation of the frequency band number is not limited.

[0136] It is understood that the frequency band number is one type of frequency band identifier. In this embodiment of the application, the frequency band identifier may also be in other ways, and this embodiment of the application does not limit this.

[0137] In this embodiment, for different terminal devices, one or more first frequency band groups supported by the device are determined from multiple second frequency band groups based on the frequency bands they support. When a terminal device supports different frequency bands, the determined first frequency band groups may be different.

[0138] In some embodiments, the second frequency band group is a subset of the frequency bands included in one of a plurality of frequency ranges.

[0139] In some embodiments, the frequency range is a predefined frequency range (FR). The second frequency band group is a subset of the predetermined FR.

[0140] In one example, the predefined FRs include: FR1, FR2, and FR3.

[0141] In one example, the predetermined FRs include: FR1, FR2-1, FR2-2, FR3-1, and FR-3.

[0142] In one example, the predetermined frequency of FR can be shown in Table 1:

[0143] Table 1. Examples of FR frequencies

[0144] Understandably, the FRs in Table 1 can be selected or combined arbitrarily.

[0145] It is understood that Table 1 above is an example of the number and frequency of FRs, and the number and frequency of FRs can be other values, which are not limited in this application embodiment.

[0146] In some embodiments, the frequency range is a predefined spectral interval. The second frequency band group is a subset of the spectral interval.

[0147] In one example, the following spectrum ranges exist: the first spectrum range (less than 1 GHz), the second spectrum range (1 GHz to 1.7 GHz), the third spectrum range (1.6 GHz to 3 GHz), the fourth spectrum range (3 GHz to 5 GHz), the fifth spectrum range (7 GHz to 8.5 GHz), the sixth spectrum range (8.5 GHz to 16 GHz), and the seventh spectrum range (30 GHz to 300 GHz). The first spectrum range can be referred to as the low-frequency band spectrum range, the second spectrum range as the mid-frequency band spectrum range, the third spectrum range as the high-frequency band spectrum range, the fourth spectrum range as the very high-frequency band spectrum range, the fifth spectrum range as the 6 GHz low-frequency band spectrum range, the sixth spectrum range as the 6 GHz high-frequency band spectrum range, and the seventh spectrum range as the millimeter-wave band spectrum range.

[0148] In this embodiment of the application, the number of spectrum intervals and the frequency of each spectrum interval can also be other values, and this embodiment of the application does not limit them.

[0149] In some embodiments, M of the plurality of second frequency band groups are located in one of the plurality of frequency ranges, where M is greater than or equal to 1.

[0150] A frequency range corresponds to or includes one or more, i.e., M, second frequency band groups. A first number of second frequency band groups includes the second frequency band groups corresponding to each frequency range within the plurality of frequency ranges. Wherein, M is greater than or less than 1. In the embodiments of this application, M can also be described as a second number. A frequency range corresponding to or including one second frequency band group can be understood as the frequency bands within that frequency range being located in one second frequency band group. A frequency range corresponding to or including multiple second frequency band groups can be understood as the frequency bands within that frequency range being located in multiple second frequency band groups.

[0151] In this embodiment of the application, within multiple frequency ranges, a frequency band within one frequency range is divided into one or more second frequency band groups. The number of second frequency band groups divided into frequency bands in different frequency ranges may be the same or different.

[0152] In one embodiment, each frequency range among multiple frequency ranges includes a second frequency band group. In one example, the predefined FRs include FR1, FR2, and FR3, and the frequency bands in each of FR1, FR2, and FR3 are respectively located in a second frequency band group. In one example, the predefined spectrum intervals include a first spectrum interval, a second spectrum interval, a third spectrum interval, a fourth spectrum interval, a fifth spectrum interval, a sixth spectrum interval, and a seventh spectrum interval, and the frequency bands in each of the first, second, third, fourth, fifth, sixth, and seventh spectrum intervals are respectively located in a second frequency band group.

[0153] In one embodiment, among multiple frequency ranges, some frequency ranges include one second frequency band group, and some frequency ranges include multiple second frequency band groups. In one example, the predetermined FRs include FR1, FR2, and FR3, then FR1 corresponds to one second frequency band group, and FR2 and FR3 are respectively divided into multiple second frequency band groups. In one example, the predetermined spectrum intervals include: a first spectrum interval, a second spectrum interval, a third spectrum interval, a fourth spectrum interval, a fifth spectrum interval, a sixth spectrum interval, and a seventh spectrum interval. The frequency bands in each spectrum interval of the first, second, and third spectrum intervals are respectively divided into multiple second frequency band groups, and the frequency bands in each spectrum interval of the fourth, fifth, sixth, and seventh spectrum intervals correspond to one second frequency band group.

[0154] In one embodiment, the frequency bands in each of the multiple frequency ranges include multiple groups of second frequency bands.

[0155] In this embodiment of the application, the frequency bands in the frequency range are located in a second frequency band group, which can be understood as dividing the frequency bands in the frequency range into a second frequency band group.

[0156] In this embodiment of the application, the frequency bands in the frequency range are located in multiple second frequency band groups. This can be understood as dividing the frequency bands in the frequency range into a frequency band group, and then further dividing the frequency bands in the frequency band group into multiple second frequency band groups.

[0157] In some embodiments, when a first frequency range in the plurality of frequency ranges includes M second frequency bands and M is greater than 1, the rule for dividing the frequency bands included in the first frequency range into M groups of second frequency bands includes one or more of the following:

[0158] Rule 1: Within the first frequency range, two frequency bands with overlapping spectra are located in the same second frequency band group;

[0159] Rule 2: Within the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval smaller than the first frequency interval are located in the same second frequency band group;

[0160] Rule 3: Within the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval greater than the second frequency interval are located in different second frequency band groups.

[0161] The first frequency range can be understood as any frequency range in which the number M of the second frequency band groups included in multiple frequency ranges is greater than 1.

[0162] Rule 1 is used for dividing frequency bands into groups of two frequency bands with overlapping spectra. Rule 2 is used for dividing frequency bands into groups of two frequency bands with adjacent spectral positions and a small frequency interval. Rule 3 is used for dividing frequency bands into groups of two frequency bands with adjacent spectral positions and a large frequency interval.

[0163] Rule 1 and / or Rule 2 are used to identify frequency bands where frequency division multiplexing is not easily or impossible to achieve between adjacent spectrum bands. Frequency bands where frequency division multiplexing is not easily or impossible to achieve between adjacent spectrum bands are located in the same second frequency band group. In this application embodiment, the rules for identifying frequency bands where frequency division multiplexing is not easily or impossible to achieve between adjacent spectrum bands may include, but are not limited to, Rule 1 and / or Rule 2, and may also include other rules; this application embodiment does not impose any limitations on this.

[0164] Rule 3 is used to determine frequency bands where frequency division multiplexing is easily achieved between adjacent spectrum bands. Frequency bands where frequency division multiplexing is easily achieved between adjacent spectrum bands are located in different second frequency band groups. In this application embodiment, the rule for determining frequency bands where frequency division multiplexing is easily achieved between adjacent spectrum bands may include, but is not limited to, Rule 3, and may also include other rules; this application embodiment does not impose any limitations on this.

[0165] In some embodiments, the first frequency interval and the second frequency interval are frequency interval thresholds used to determine whether frequency division multiplexing can be easily achieved between two frequency bands. If the frequency interval between two frequency bands is less than the first frequency interval, it is considered that frequency division multiplexing cannot be easily achieved between the two frequency bands. If the frequency interval between two frequency bands is greater than the second frequency interval, it is considered that frequency division multiplexing can be easily achieved between the two frequency bands.

[0166] In some embodiments, the first frequency interval and / or the second frequency interval are predefined.

[0167] In some embodiments, the first frequency interval and / or the second frequency interval are determined based on the implementation.

[0168] In some embodiments, the first frequency interval and the second frequency interval are the same size.

[0169] In some embodiments, the frequency range includes frequencies below 1 GHz; the second frequency band group included in the frequency range includes one or more of the following: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, {n13, n14, n28, n20}.

[0170] The frequency range includes frequencies below 1 GHz, which is the first frequency band. The spectral distribution of the first frequency band is shown in Figure 15. Based on the frequency band distribution, the dividing line 1501 can be determined. The frequency interval at the location of the dividing line 1501 is relatively large and the spectral overlap rate is low. Here, "relatively large frequency interval at the location of the dividing line 1501" can be understood as the frequency interval at the location of the dividing line 1501 in the spectrum diagram shown in Figure 15 being larger than the frequency interval at other locations. "Low spectral overlap rate at the location of the dividing line 1501" can be understood as the spectral overlap rate at the location of the dividing line 1501 in the spectrum diagram shown in Figure 15 being lower than the spectral overlap rate at other locations.

[0171] As shown in Figure 15, the first frequency spectrum interval includes the following frequency bands: n5, n8, n12, n13, n14, n18, n20, n26, n28, n29, n71, n81, n82, n83, n85, n89, n100, n105, and n106. Based on the boundary line 1501, the frequency bands of the first frequency spectrum interval are divided into two second frequency band groups: BandGroup1-1: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, and BandGroup1-2: {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}. The frequency bands near the dividing line 1501 that have overlapping frequencies, namely the frequency bands with overlapping frequencies in BandGroup1-1 and BandGroup1-2, are further divided into a second frequency band group: BandGroup1-3: {n14, n20, n28}. Thus, the first frequency interval is divided into three second frequency band groups: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, and {n13, n14, n28, n20}. The second frequency band groups included in the first frequency interval may include one or more of these three second frequency band groups.

[0172] In this embodiment of the application, for the frequency range below 1 GHz, the division method of the second frequency band group can be other than the method shown in Figure 15, and this embodiment of the application does not limit this.

[0173] In some embodiments, the frequency range includes 1 GHz to 1.7 GHz; the second frequency band group included in the frequency range includes one or more of the following: {n24, n50, n51, n74, n75, n76, n99}, {n54}.

[0174] The frequency range includes 1 GHz to 1.7 GHz, which is the second frequency range. The spectral distribution of the second frequency range is shown in Figure 16. Based on the frequency band distribution, a boundary line 1601 can be determined, where the frequency interval at the location of boundary line 1601 is relatively large. As shown in Figure 16, the second frequency range includes the following frequency bands: n24, n50, n51, n54, n74, n75, n76, n99. Based on boundary line 1601, the frequency bands of the second frequency range are divided into two second frequency band groups: {n24, n50, n51, n74, n75, n76, n99} and {n54}. The second frequency band groups included in the second frequency range may include one or more of these two second frequency band groups.

[0175] In this embodiment of the application, for the frequency range of 1 GHz to 1.7 GHz, the division method of the second frequency band group can be other than the method shown in Figure 16, and this embodiment of the application does not limit this.

[0176] In some embodiments, the frequency range includes 1.6 GHz to 3 GHz; the second frequency band group included in the frequency range includes one or more of the following: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n98, n101}, {n2, n3, n25, n39, n98}, {n30, n40, n97}, {n7, n38, n41, n53, n90}.

[0177] The frequency range includes 1.6 GHz to 3 GHz, which is the third frequency spectrum interval. The spectral distribution of the third frequency spectrum interval is shown in Figure 17. Based on the frequency band distribution, the dividing line 1701, dividing line 1702 and dividing line 1703 can be determined. Among them, the frequency intervals of the locations of dividing lines 1701, dividing line 1702 and dividing line 1703 are relatively large and the spectral overlap rate is low. As shown in Figure 17, based on boundary lines 1701, 1702, and 1703, the third frequency spectrum is divided into the following four second frequency band groups: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n98, n101}, {n30, n40, n97}, and {n7, n38, n41, n53, n90}. Furthermore, the frequency bands with overlapping spectra near boundary line 1701 are divided into a second frequency band group: {n2, n3, n25, n39, n98}. Therefore, the third frequency range is divided into five second frequency band groups: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n98, n101}, {n2, n3, n25, n39, n98}, {n30, n40, n97}, {n7, n38, n41, n53, n90}. The second frequency band groups included in the third frequency range may include one or more of these five second frequency band groups.

[0178] In this embodiment of the application, for the frequency range of 1.6 GHz to 3 GHz, the division method of the second frequency band group can be other than the method shown in Figure 17, and this embodiment of the application does not limit this.

[0179] In this embodiment of the application, the determination of the position of the dividing line in Figures 16 and 17 can refer to the determination of the dividing line in Figure 15, and will not be repeated here.

[0180] In some embodiments, based on FIG12, the wireless communication method provided in this application further includes:

[0181] The terminal device sends second information, which includes parameters of the one or more first frequency band groups.

[0182] In some embodiments, based on FIG13, the wireless communication method provided in this application further includes:

[0183] The network device receives second information sent by the terminal device, the second information including parameters of the one or more first frequency band groups.

[0184] When a terminal device reports a first frequency band group, it also reports parameters for one or more first frequency band groups. The parameters included in the second information can be understood as parameters applied to one or more first frequency band groups indicated by the first information.

[0185] In this embodiment of the application, the first information and the second information can be transmitted through the same message or through different messages.

[0186] In some embodiments, the first information further includes parameters of the one or more first frequency band groups. In this case, the first information and the second information can be considered the same information, which indicates one or more first frequency band groups and includes parameters of one or more first frequency band groups. The second information can be understood as first frequency band group parameter information.

[0187] In some embodiments, the second information includes one or more of the following:

[0188] The first parameter is the aggregation parameter of the frequency bands among the first frequency band groups;

[0189] One or more second parameters of the first frequency band group, wherein the second parameters are common parameters among the frequency bands within the first frequency band group;

[0190] One or more third parameters of the second frequency band, wherein the third parameters are parameters of the second frequency band used for multi-band aggregation and / or frequency band selection, and the second frequency band is a frequency band in the first frequency band group.

[0191] The first parameter can be understood as the parameter used for carrier aggregation between different first frequency band groups.

[0192] In some embodiments, the first parameter includes: the transmit power level of the uplink aggregation.

[0193] The transmit power level of uplink aggregation can be understood as the maximum power level when multiple frequency bands are carrier aggregated.

[0194] This first parameter applies to all first frequency groups in multiple first frequency groups.

[0195] The second parameter is specific to the first frequency band group; different first frequency band groups may correspond to different second parameters. The second parameter can be understood as a parameter that can be shared by all frequency bands within a first frequency band group.

[0196] In some embodiments, the one or more second parameters include one or more of the following:

[0197] First indication information, the first indication information is used to indicate whether the first frequency band group supports inter-band switching;

[0198] The first time is the switching time between frequency bands in the first frequency band group;

[0199] The second indication information is used to indicate the switching mode of the frequency band switching of the first frequency band group.

[0200] The first indication information can indicate whether the first frequency band group supports inter-band switching based on different values. In one example, the first indication information is a first value, indicating that the first frequency band group supports inter-band switching; the first indication information is a second value, indicating that the first frequency band group does not support inter-band switching.

[0201] In some embodiments, the first indication information may also be referred to as band group switching indication information.

[0202] When the first frequency band group supports inter-band switching, the frequency bands in the first frequency band group can be switched with the frequency bands in other first frequency band groups.

[0203] The first time can be understood as the time required for frequency band switching when the first frequency band group supports inter-band switching.

[0204] The value of the first time interval can be 35us, 140us, 120us, etc. In this embodiment, the value of the first time interval is not limited.

[0205] The second indication information is used to indicate the switching mode when the frequency bands in the first frequency band group are switched.

[0206] Here, the inter-band handover mode is used to indicate the relationship between uplink and downlink before and after the band handover. In some embodiments, the second indication information may also be referred to as inter-band handover mode indication information.

[0207] In some embodiments, the switching mode for inter-band switching includes one or more of the following:

[0208] Switching from full-duplex in the third frequency band to downlink in the fourth frequency band;

[0209] Switching from full-duplex in the third frequency band to downlink in the third frequency band and downlink in the fourth frequency band;

[0210] Switching from full-duplex in the third frequency band to uplink in the fourth frequency band;

[0211] Switching from full-duplex in the third frequency band to full-duplex in the fourth frequency band;

[0212] Switching from uplink in the third frequency band to full-duplex in the fourth frequency band;

[0213] The frequency band before the frequency band switch includes the third frequency band, and the frequency band after the frequency band switch includes the fourth frequency band or includes both the third frequency band and the fourth frequency band.

[0214] In this embodiment of the application, the switching mode between frequency bands can be understood as indicating the switching between the duplex mode before the switch and the duplex mode after the switch.

[0215] The duplex mode may include full-duplex, half-duplex, uplink-only, and downlink-only. In this embodiment, other duplex modes may also be included, and this embodiment does not impose any limitations on them.

[0216] Full-duplex in a frequency band can be understood as the frequency band supporting both uplink and downlink, and can be represented as 1UL1DL.

[0217] Downlink in a frequency band can be understood as the frequency band only supporting downlink, which can be represented as 1DL.

[0218] Uplink in a frequency band can be understood as the frequency band only supporting uplink, which can be represented as 1UL.

[0219] Terminal devices can support one or more frequency bands. For a single frequency band, they can support full-duplex, uplink-only, or downlink-only.

[0220] If a terminal device supports two frequency bands and both frequency bands support full-duplex operation, it can be represented as 2UL2DL.

[0221] If a terminal device supports two frequency bands, with one band supporting full-duplex and the other supporting only uplink, it can be represented as 2UL1DL.

[0222] If a terminal device supports two frequency bands, with one band supporting full-duplex and the other supporting only downlink, it can be represented as 1UL2DL.

[0223] Taking the third frequency band as band A and the fourth frequency band as band B as an example, the switching modes between frequency bands can include one or more of the following:

[0224] This indicates a switch from full-duplex to DL-only in band A.

[0225] This indicates a switch from full-duplex to DL-only in band A+B.

[0226] This indicates a switch from full-duplex mode in band A to UL-only mode in band B.

[0227] This indicates a switch from full-duplex mode in frequency band A to full-duplex mode in frequency band B.

[0228] This indicates a switch from UL only in band A to DL only in band A+ band B.

[0229] In this embodiment of the application, the switching mode between segments may include, but is not limited to, the switching modes described above.

[0230] One or more third parameters are parameters for the second frequency band in the first frequency band group, and different second frequency bands may correspond to different one or more third parameters.

[0231] Understandably, the second frequency band is the first frequency band supported by the terminal device, meaning that the first frequency band and the second frequency band can be understood as the same frequency band.

[0232] The third parameter can be understood as the parameter when the corresponding second frequency band is operating in a multi-frequency band situation.

[0233] In some embodiments, the one or more third parameters include one or more of the following: the number of carriers supported by the second frequency band;

[0234] The subcarrier spacing supported by the second frequency band; the uplink carrier bandwidth and / or downlink carrier bandwidth supported by the second frequency band; third indication information, which is used to indicate whether the uplink carrier bandwidth and downlink carrier bandwidth of the second frequency band are the same; fourth indication information, which is used to indicate whether the second frequency band supports flexible duplex spacing;

[0235] The uplink and downlink carrier duplex modes of the second frequency band;

[0236] The second frequency band supports the following transmit power levels;

[0237] The number of RF paths used for uplink and / or downlink in the second frequency band;

[0238] The number of multiple input-output MIMO layers supported by the uplink and / or downlink carriers of the second frequency band.

[0239] The second frequency band can support 1, 2, 3, etc.

[0240] The number of carriers supported by the second frequency band can be the number of uplink carriers and / or downlink carriers supported by the second frequency band.

[0241] In some embodiments, when the second frequency band supports multiple carriers, the third parameter may further include indication information for indicating whether the multiple carriers are consecutive. In one example, this indication information indicates whether the multiple carriers are consecutive or discontinuous based on different values.

[0242] The subcarrier spacing supported by the second frequency band may include one or more of 15kHz, 30kHz, 60kHz, and 120kHz. In this embodiment, the size of the subcarrier spacing supported by the second frequency band may include other sizes besides those mentioned above, and this embodiment does not limit this.

[0243] The bandwidth of the uplink or downlink carrier supported by the second frequency band may include one or more of 5MHz, 10MHz, and 20MHz. This application embodiment does not limit the bandwidth of the uplink or downlink carrier supported by the second frequency band.

[0244] The duplex modes of the uplink and downlink carriers in the second frequency band may include one or more of the following: full-duplex, half-duplex, uplink only, and downlink only.

[0245] The uplink and downlink carrier duplex mode of the second frequency band is full-duplex, indicating that the terminal supports simultaneous transmission and reception in the FDD frequency band.

[0246] The uplink and downlink carrier duplex mode of the second frequency band is half-duplex, indicating that the terminal supports time-division multiplexing of uplink and downlink carriers in the FDD band.

[0247] The duplex mode of the uplink and downlink carriers in the second frequency band is either uplink-only or downlink-only, indicating that the FDD or TDD frequency band can operate in uplink-only or downlink-only mode.

[0248] When the duplex mode of the uplink and downlink carriers in the second frequency band is uplink only or downlink only, the second frequency band can be recombined with the downlink or uplink of other frequency bands to form uplink and downlink carriers for use, according to network scheduling.

[0249] The third indication information can also be called the uplink and downlink bandwidth relationship indication information corresponding to the second frequency band.

[0250] The fourth indication information can also be called the flexible duplex interval indication information corresponding to the second frequency band.

[0251] In this embodiment of the application, the reporting of the first information and the second information can be understood as the reporting of terminal capabilities at the frequency band group level, enabling network devices to perform efficient frequency band configuration based on the reporting of terminal devices.

[0252] This application provides a wireless communication method applied to a terminal device, as shown in Figure 18, including:

[0253] S1801. The terminal device sends third information, which is used to indicate one or more first frequency bands, wherein the first frequency band is a frequency band supported by the terminal device.

[0254] This application provides a wireless communication method applied to a network device, as shown in Figure 19, including:

[0255] S1901. The network device receives third information sent by the terminal device, the third information being used to indicate one or more first frequency bands, the first frequency bands being frequency bands supported by the terminal device.

[0256] This application provides a wireless communication method applied to a wireless communication system including terminal devices and network devices, as shown in FIG20, including:

[0257] S2001. The terminal device sends third information to the network device, the third information being used to indicate one or more first frequency bands, the first frequency band being a frequency band supported by the terminal device.

[0258] The wireless communication methods shown in Figures 18, 19, or 20 will now be described.

[0259] The third piece of information can be understood as the frequency band capability information of the terminal device, which is used to indicate one or more frequency bands supported by the terminal device.

[0260] Terminal devices report the frequency bands they support to network devices by reporting third-party information. The reporting of third-party information can be understood as frequency band-level reporting.

[0261] In this embodiment of the application, the network device learns about the frequency band support capability of the terminal device by reporting third information, so that the network device can accurately configure the frequency band for the terminal device.

[0262] In this embodiment of the application, the first information and the third information can be transmitted through the same message or through different messages.

[0263] In some embodiments, the first information further indicates one or more first frequency bands. In this case, the first information and the third information can be considered as the same information, which indicates one or more groups of first frequency bands and indicates one or more first frequency bands.

[0264] In some embodiments, based on FIG18, the wireless communication method provided in this application further includes: the terminal device sending fourth information, the fourth information including parameters for the one or more first frequency bands to operate in a single frequency band.

[0265] In some embodiments, based on FIG19, the wireless communication method provided in this application embodiment further includes: the network device receiving fourth information sent by the terminal device, the fourth information including parameters of the one or more first frequency bands.

[0266] When a terminal device reports one or more first frequency bands, it also reports the parameters of those one or more frequency bands.

[0267] In this embodiment of the application, the fourth information and the third information can be transmitted through the same message or through different messages.

[0268] In some embodiments, the third information further includes parameters for one or more first frequency bands to operate in a single frequency band. In this case, the fourth information and the third information can be considered as the same information, which indicates one or more first frequency bands and includes parameters for the one or more first frequency bands.

[0269] In some embodiments, the fourth information includes one or more fourth parameters of the first frequency band, wherein the fourth parameters are parameters for the first frequency band to operate in a single frequency band.

[0270] For each of one or more first frequency bands, there are one or more fourth parameters, wherein the fourth parameters of different first frequency bands are independent.

[0271] The fourth parameter is the parameter when the corresponding first frequency band is used as a single frequency band. It can be understood that when the first frequency band is used as a single frequency band, the use of the first frequency band is controlled based on one or more first parameters corresponding to the first frequency band.

[0272] In some embodiments, the one or more fourth parameters include one or more of the following: subcarrier spacing supported by the first frequency band; uplink carrier bandwidth and / or downlink carrier bandwidth supported by the first frequency band; fifth indication information, which indicates whether the uplink carrier bandwidth and downlink carrier bandwidth of the first frequency band are the same; sixth indication information, which indicates whether the first frequency band supports flexible duplex spacing; duplex mode of uplink and downlink carriers of the first frequency band; transmit power level supported by the first frequency band; number of RF paths used for uplink and / or downlink in the first frequency band; modulation scheme.

[0273] In the embodiments of this application, the description of some of the fourth parameters can be found in the description of the third parameters with the same indication content, and will not be repeated here.

[0274] Understandably, the third and fourth parameters are both carrier parameters. For the same carrier, the parameters when operating as a single frequency band and when used as a multi-band frequency band for frequency aggregation or frequency selection can be the same or different.

[0275] In some embodiments, the fifth indication information may also be referred to as the uplink and downlink bandwidth relationship indication information corresponding to the first frequency band.

[0276] In some embodiments, the sixth indication information may also be referred to as the flexible duplex spacing indication information corresponding to the first frequency band.

[0277] This application provides a wireless communication method applied to a terminal device, as shown in FIG21, including:

[0278] S2101. The terminal device receives fifth information, which is related to the first information. The fifth information is used to configure one or more fifth frequency bands, which are frequency bands used by the terminal device.

[0279] This application provides a wireless communication method applied to a network device, as shown in FIG22, including:

[0280] S2201. The network device sends fifth information to the terminal device. The fifth information is related to the first information. The fifth information is used to configure one or more fifth frequency bands. The fifth frequency band is the frequency band used by the terminal device.

[0281] The terminal device sends first information to the network device. After receiving the first information, the network device configures the terminal device for the fifth frequency band based on the first information, and indicates one or more fifth frequency bands to the terminal device through the fifth information.

[0282] In some embodiments, when the terminal device reports one or more of the second, third, and fourth information, the fifth information may be related to one or more of the second, third, and fourth information reported by the terminal device.

[0283] In the case of scheduling multiple fifth frequency bands, the fifth information can also be used to indicate the switching mode of multiple fifth frequency bands.

[0284] The operating modes of multiple fifth bands may include: time division multiplexing between different fifth bands and / or frequency division multiplexing between different fifth bands.

[0285] In one example, the fifth piece of information only indicates frequency band n1, indicating that the terminal device communicates based on frequency band n1.

[0286] In one example, the fifth information indicates the time-division multiplexed frequency bands n28 and n71 (which can be identified as T(n28, n71)), so the terminal device can perform time-division switching between n28 and n71.

[0287] In one example, the fifth information indicates a time-division switching of the uplink and downlink carriers of n3 (which can be identified as T(n3U, n3D+n39D)), then the terminal device switches from the uplink carrier of n3 to the downlink carrier of n3 and the downlink carrier of n39.

[0288] In this embodiment, the terminal device can operate on carriers of a first number of frequency bands. The first number can be understood as the number of frequency bands operating simultaneously, and can be one or more of 1, 2, 3, 4, and 5. In this embodiment, the value of the first number is not limited.

[0289] In this embodiment of the application, the switching between frequency bands can be determined by the network device or according to a predefined switching pattern.

[0290] When the switching between frequency bands is determined by the network device, the network device can control the switching between frequency bands through downlink signaling. In some embodiments, the downlink signaling may include one or more of downlink control information (DCI) and other dynamic signaling.

[0291] In this embodiment, the network device configures the frequency band for the terminal device based on the capabilities reported by the terminal device, and can also schedule the switching mode between frequency bands to realize the carrier combination in the time domain and frequency domain, thereby improving the uplink and / or downlink capacity of the network while also increasing the transmission rate.

[0292] The wireless communication method provided in the embodiments of this application will now be described.

[0293] This application proposes a method for grouping frequency bands to achieve time-domain and frequency-domain carrier combination, thereby improving network uplink and / or downlink capacity and transmission rate. Frequency bands within a group are selected or carriers are selected through time-division switching to achieve time-division multiplexing. Frequency bands between groups are multiplexed in the frequency domain through frequency band combination (frequency band combination may include carrier aggregation (CA), SUL, and dual link).

[0294] The grouping method provided in this application embodiment may include:

[0295] Method 1: Group the frequencies according to the spectrum range defined in the protocol, with the specific frequency points defined in the standard.

[0296] In one example, the spectrum ranges FR1, FR2, and FR3 are grouped according to the protocol definition, and the division of FR1, FR2, and FR3 can be shown in Table 1.

[0297] Method 2: Based on LTE or NR, the low-frequency spectrum range (less than 1 GHz), mid-frequency spectrum range (greater than 1 GHz and less than 1.7 GHz), high-frequency spectrum range (greater than 1.6 GHz and less than 3 GHz), very high-frequency spectrum range (greater than 3 GHz and less than 5 GHz), 6 GHz low-frequency spectrum range (greater than 7 GHz and less than 8.5 GHz), 6 GHz high-frequency spectrum range (greater than 8.5 GHz and less than 16 GHz), and millimeter-wave spectrum range (30 GHz to 300 GHz) are grouped into several band groups. The band groups are named BandGroupX. Frequency bands within a group are reused through time-division switching. Frequency bands between groups can simultaneously perform carrier aggregation in the frequency domain.

[0298] Method 3: Based on the partitioning of Method 2, further grouping is performed within the low-frequency band spectrum range, mid-frequency band spectrum range, and high-frequency band spectrum range according to the ease of implementation of carrier aggregation. Frequency bands within a group are reused through time-division switching, and frequency bands between groups can be connected by multiplex filters for carrier aggregation.

[0299] The grouping criteria are as follows: if it is not easy or impossible to achieve frequency division multiplexing between adjacent spectrums, they are grouped into the same group for intra-group time division multiplexing; if it is easy to achieve frequency division multiplexing between adjacent spectrums, they are grouped into different groups for inter-group frequency division multiplexing. If a frequency band belongs to multiple frequency band groups at the same time, then the frequency band and each frequency band in each of its respective Band Groups can only perform time division multiplexing and cannot perform frequency division multiplexing.

[0300] The method for grouping within each frequency band can be as follows: First, find a dividing line with a relatively large frequency interval and low spectral overlap to divide the frequency band into two, resulting in BandGroupX-1 and BandGroupX-2. Then, divide the frequency bands near the dividing line that are located between the two band groups with relatively small intervals or spectral overlap into a third band group: BandGroupX-3. Frequency bands within the same band group (BandGroupX-1, BandGroupX-2, or BandGroupX-3) can only be time-division multiplexed. Frequency bands located in BandGroupX-1 and those located in BandGroupX-2 but not in BandGroupX-3 can be frequency-division multiplexed using multiplexing filters. Alternatively, multiple dividing lines can be used to divide the frequency band into multiple parts, and then the above rules can be applied for grouping. An example of grouping is shown below:

[0301] Example 1: The grouping of the low-frequency spectrum intervals can be shown in Figure 15. The low-frequency spectrum intervals are divided into two groups based on the boundary line 1001, as follows:

[0302] BandGroup1-1: {n12, n13, n14, n28, n29, n71, n83, n85, n105},

[0303] BandGroup1-2: {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}.

[0304] Since the uplink of band n14 and the downlink of band n28 in BandGroup1-1 overlap with the downlink of band n20, frequency division multiplexing cannot be achieved. Therefore, the frequency bands in BandGroup1-1 and BandGroup1-2 that are difficult to achieve frequency division multiplexing can be further grouped into BandGroup1-3: {n14, n20, n28}.

[0305] If frequency band n14 belongs to both BandGroup1-1 and BandGroup1-3, then n14 can only be time-division multiplexed with each frequency band in BandGroup1-1 and BandGroup1-3, but not frequency-division multiplexed. However, n14 can be frequency-division multiplexed with other frequency bands in BandGroup1-2 that are not located in BandGroup1-3.

[0306] When a terminal reports a frequency band, it can select the supported frequency bands from each frequency band group based on its own capabilities. For example, the frequency bands supported by each Band Group in the low-frequency spectrum range are as follows:

[0307] BandGroup1-1: {n28, n71,}

[0308] BandGroup1-2: {n8, n20}

[0309] BandGroup1-3: {n20, n28}

[0310] The terminal supports frequency division multiplexing of frequency bands n28 and n8, or n71 and n8, or n71 and n20. It only supports time division multiplexing between n28 and n71, and n20. The achievable RF architecture is shown in Figure 23. The switch states in Figure 23 and the corresponding supported frequency band combinations are shown in Table 2.

[0311] Examples of switch combinations in Table 2 and Figure 23

[0312] It should be noted that in the embodiments of this application, T(nX, nZ) represents that frequency bands nX and nZ can only be time-division multiplexed, CA_nX-nY represents that frequency bands nX and nY can be used simultaneously, and CA_T(nX, nZ)-nY represents that frequency bands nX and nY and nZ and nY can be used simultaneously, but only time-division multiplexing can be used between nX and nZ.

[0313] Example 2: The grouping of the mid-frequency spectrum interval can be shown in Figure 16. The mid-frequency spectrum interval is divided into two groups based on the dividing line 1201, such as: BandGroup2-1: {n24, n50, n51, n74, n75, n76, n99}, BandGroup2-2: {n54}.

[0314] There are no overlapping frequency bands or frequency bands with small frequency intervals near the dividing line 1201. Therefore, there is no third band group, BandGroup2-3, here.

[0315] Frequency bands located within BandGroup2-1 or BandGroup2-2 can only be time-division multiplexed, while frequency bands located between BandGroup2-1 and BandGroup2-2 can be frequency-division multiplexed through multiplexing filters.

[0316] Example 3: The high-frequency band can be grouped as shown in Figure 17. Since the frequency spectrum range of about 1.7G to 2.3G is relatively large, it can be divided into 4 parts. Then, considering the problem of small frequency intervals or spectrum overlap near the dividing line, as shown in Figure 13, it can be divided into five frequency band groups.

[0317] BandGroup3-1: {n3, n66, n70, n80, n86}

[0318] BandGroup3-2: {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n98, n101}

[0319] BandGroup3-3: {n2, n3, n25, n39, n98}

[0320] BandGroup4-1: {n30, n40, n97}

[0321] BandGroup4-2: {n7, n38, n41, n53, n90}

[0322] The above grouping follows the following rules: frequency bands within the same group can be time-division multiplexed, and frequency bands located in different groups but not in two or more groups can be frequency-division multiplexed.

[0323] The terminal can select any supported frequency band group from the further grouping of low-frequency band spectrum range, mid-frequency band spectrum range, and high-frequency band spectrum range, such as BandGroup1-1{}, BandGroup2-2{}, BandGroup3-1{}, BandGroup4-2{}, etc.

[0324] In this embodiment of the application, after frequency band grouping, in order to simplify the scheduling complexity, multiple different carriers located in the same frequency band group are assigned to the same cell, or multiple carriers can be combined into a virtual carrier, and carriers located in different frequency band groups are assigned to different cells.

[0325] Terminal capabilities can be reported at different levels, such as supported frequency bands, supported frequency band groups, and frequency bands supported within a frequency band group. The frequency bands within a frequency band group should be a subset of the frequency bands supported by the terminal.

[0326] The connected terminal reports the supported frequency bands and the parameters supported for each frequency band, such as the supported subcarrier spacing, uplink and downlink carrier bandwidth, power level, modulation method, etc.

[0327] In connected mode, the terminal reports a list of supported frequency band groups. The number of frequency band groups reported represents the number of cells supported by the terminal. The following parameters are also reported:

[0328] Characteristic parameters of frequency band aggregation between different frequency band groups, such as the power level of uplink aggregation;

[0329] Common characteristic parameters among frequency bands within a frequency band group, such as whether dynamic switching between frequency bands is supported, the corresponding switching time, and the duplex mode of switching between frequency bands;

[0330] The parameters for each frequency band within a frequency band group may include: the number of carriers supported on each band and the relative positions between carriers (e.g., whether the carriers are continuously or discontinuously distributed), the bandwidth of each carrier including the subcarrier spacing, the size of the uplink and downlink carriers (uplink and downlink carriers can be reported separately), whether different bandwidths for uplink and downlink carriers are supported (if the terminal reports support, it means the network can configure different bandwidths on the uplink and downlink carriers in this frequency band, such as 20MHz uplink and 40MHz downlink), whether flexible duplex spacing of the center frequency points of uplink and downlink carriers is supported, and the duplex mode of uplink and downlink carriers (full-duplex, half-duplex, UL only, DL only) (a terminal reporting full-duplex indicates that the terminal supports simultaneous transmission and reception in the FDD band; a terminal reporting half-duplex indicates that the terminal supports time-division multiplexing of uplink and downlink carriers in the FDD band; a terminal reporting UL only or DL ​​only indicates that a normal FDD or TDD frequency band can operate in UL only or DL ​​mode). In the only mode, depending on network scheduling, it can be recombined with downlink or uplink of other frequency bands to form uplink and downlink carriers for use (e.g., the uplink carrier of frequency band A is paired with the downlink carrier of frequency band B for use), the transmit power level of the uplink of the frequency band, and the number of radio frequency paths used for uplink and / or downlink of the frequency band.

[0331] In one embodiment, the information reported by the terminal is as follows:

[0332] Terminal reporting support:

[0333] Frequency bands: n1, n3, n28, n39, n41, n71 (supported frequency bands);

[0334] n1

[0335] SCS: 15kHz, 30kHz; BW-UL: 5MHz, 10MHz, 20MHz; BW-DL: 5MHz, 10MHz, 20MHz; Supports different uplink and downlink carrier sizes; Supports flexible duplex spacing; Half-duplex; Uplink transmit power PC3 23dBm; 1Tx chain; 1Rx chain.

[0336] Other frequency bands are similar and will not be listed here.

[0337] Low-frequency band group 1-1: {n28, n71,} (Supported band group)

[0338] Supports dynamic switching with a switching time of 140µs; supports inter-band switching modes; (common parameters for low-frequency band groups)

[0339] Band n28

[0340] SCS: 15kHz; 1 uplink carrier; 2 downlink carriers: consecutive; BW-UL: 5MHz, 10MHz, 20MHz; BW-DL: 5MHz, 10MHz, 20MHz; supports different uplink and downlink carrier sizes; supports flexible duplex spacing; half-duplex; uplink transmit power PC3 23dBm; 1Tx chain; 1Rx chain.

[0341] Band n71

[0342] SCS: 15kHz; 1 uplink carrier; 1 downlink carrier; BW-UL: 5MHz, 10MHz, 20MHz; BW-DL: 5MHz, 10MHz, 20MHz; supports different uplink and downlink carrier sizes; supports flexible duplex spacing; full duplex; uplink transmit power PC3 23dBm; 1Tx chain; 1Rx chain.

[0343] High-frequency band group 3-1: {n3, n39} (Supported band groups)

[0344] Dynamic switching is not supported; {1UL1DL, 2DL} (common parameters for high-frequency band groups) are supported.

[0345] Band n3

[0346] SCS: 15kHz; 1 uplink carrier; 2 downlink carriers: discontinuous; BW-UL: 5MHz, 10MHz, 20MHz; BW-DL: 5MHz, 10MHz, 20MHz; supports different uplink and downlink carrier sizes; supports fixed duplex spacing; supports half-duplex; uplink transmit power PC3 23dBm; 1Tx chain; 2Rx chain.

[0347] Band n39

[0348] SCS: 15kHz; 1 uplink carrier; 1 downlink carrier; BW-UL: 5MHz, 10MHz, 20MHz; BW-DL: 5MHz, 10MHz, 20MHz; supports different uplink and downlink carrier sizes; supports different uplink and downlink carrier center frequencies; uplink transmit power PC3 23dBm; 1Tx chain; 1Rx chain.

[0349] Uplink aggregation power level PC2 (inter-band aggregation parameter).

[0350] The network schedules terminals according to their reported capabilities. For example, the network can schedule only one frequency band, such as n1, or it can time-division switch two frequency bands, such as T(n28, n71), corresponding to the switching mode. It can even time-division switching schedule the up and down carriers of a frequency band, such as T(n3U, n3D+n39D) corresponding to the switching mode. The network can also configure the terminal with the following frequency band combinations: UL_CA_T(n28A, n71A)-T(n3A, n39A) and DL_CA_T(n28C, n71A)-T(n3A, n39A). The terminal operates in UL_CA_n28A-n3A / DL_CA_n28C-n3A at time X and in UL_CA_n71A-n3A / DL_CA_n71A-n3A at time Y. At time Z, the terminal operates in UL_CA_n28A-n39A / DL_CA_n28C-n39A, and at time W, it operates in UL_CA_n71A-n39A / DL_CA_n71A-n39A. The time domain switching between n28A and n71A is determined by the network scheduling, such as through DCI or other dynamic signaling. The switching between n3A and n39A is configured by the network with a predefined switching pattern, and the terminal switches according to the switching pattern.

[0351] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solutions of this application, and these simple modifications all fall within the protection scope of this application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. Furthermore, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be considered as the content disclosed in this application. Moreover, without conflict, the various embodiments and / or the technical features in the various embodiments described in this application can be arbitrarily combined with the prior art, and the resulting technical solutions should also fall within the protection scope of this application.

[0352] It should also be understood that in the various method embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. Furthermore, in the embodiments of this application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data. "Downlink" indicates that the transmission direction of signals or data is a first direction from the site to the user equipment in the cell; "uplink" indicates that the transmission direction of signals or data is a second direction from the user equipment in the cell to the site; and "sidelink" indicates that the transmission direction of signals or data is a third direction from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. Additionally, in the embodiments of this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. Specifically, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0353] Figure 24 is a schematic diagram of the structural composition of the terminal device provided in an embodiment of this application. As shown in Figure 24, the terminal device 2400 includes:

[0354] The first communication unit 2401 is configured to send first information, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0355] In some embodiments, the multiple frequency bands of frequency division multiplexing are used for one or more of the following: carrier aggregation, SUL, dual connectivity.

[0356] In some embodiments, the first frequency band group is a subset of one of a plurality of second frequency band groups.

[0357] In some embodiments, the first frequency band group consists of a first frequency band in the second frequency band group, wherein the first frequency band is a frequency band supported by the terminal device.

[0358] In some embodiments, the second frequency band group is a subset of the frequency bands included in one of a plurality of frequency ranges.

[0359] In some embodiments, M of the plurality of second frequency band groups are located in one of the plurality of frequency ranges, where M is greater than or equal to 1.

[0360] In some embodiments, when a first frequency range in the plurality of frequency ranges includes M second frequency bands and M is greater than 1, the rule for dividing the frequency bands included in the first frequency range into M groups of second frequency bands includes one or more of the following:

[0361] In the first frequency range, two frequency bands with overlapping spectra are located in the same second frequency band group;

[0362] In the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval smaller than the first frequency interval are located in the same second frequency band group;

[0363] In the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval greater than the second frequency interval are located in different second frequency band groups.

[0364] In some embodiments, the frequency range includes frequencies below 1 GHz;

[0365] The second frequency band group included in the frequency range includes one or more of the following: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, {n13, n14, n28, n20}.

[0366] In some embodiments, the frequency range includes 1 GHz to 1.7 GHz;

[0367] The second frequency band group included in the frequency range includes one or more of the following: {n24, n50, n51, n74, n75, n76, n99}, {n54}.

[0368] In some embodiments, the frequency range includes 1.6 GHz to 3 GHz;

[0369] The second frequency band group included in the frequency range includes one or more of the following: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n98, n101}, {n2, n3, n25, n39, n98}, {n30, n40, n97}, {n7, n38, n41, n53, n90}.

[0370] In some embodiments, the first communication unit 2401 is further configured to transmit second information, the second information including parameters of the one or more first frequency band groups.

[0371] In some embodiments, the second information includes one or more of the following: a first parameter, wherein the first parameter is an aggregation parameter of frequency bands among the first frequency band groups; one or more second parameters of the first frequency band group, wherein the second parameter is a common parameter among frequency bands within the first frequency band group; and one or more third parameters of the second frequency band, wherein the third parameter is a parameter of the second frequency band used for multi-band aggregation and / or frequency band selection, wherein the second frequency band is a frequency band in the first frequency band group.

[0372] In some embodiments, the first parameter includes: the transmit power level of the uplink aggregation.

[0373] In some embodiments, the one or more second parameters include one or more of the following:

[0374] First indication information, the first indication information is used to indicate whether the first frequency band group supports inter-band switching;

[0375] The first time is the switching time between frequency bands in the first frequency band group;

[0376] The second indication information is used to indicate the switching mode of the frequency band switching of the first frequency band group.

[0377] In some embodiments, the switching mode for inter-band switching includes one or more of the following:

[0378] Switching from full-duplex in the third frequency band to downlink in the fourth frequency band;

[0379] Switching from full-duplex in the third frequency band to downlink in the third frequency band and downlink in the fourth frequency band;

[0380] Switching from full-duplex in the third frequency band to uplink in the fourth frequency band;

[0381] Switching from full-duplex in the third frequency band to full-duplex in the fourth frequency band;

[0382] Switching from uplink in the third frequency band to full-duplex in the fourth frequency band;

[0383] The frequency band before the frequency band switch includes the third frequency band, and the frequency band after the frequency band switch includes the fourth frequency band or includes both the third frequency band and the fourth frequency band.

[0384] In some embodiments, the one or more third parameters include one or more of the following:

[0385] The number of carriers supported by the second frequency band;

[0386] The subcarrier spacing supported by the second frequency band;

[0387] The bandwidth of the uplink carrier and / or the bandwidth of the downlink carrier supported by the second frequency band;

[0388] The third indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the second frequency band are the same;

[0389] The fourth indication information is used to indicate whether the second frequency band supports flexible duplex spacing;

[0390] The uplink and downlink carrier duplex modes of the second frequency band;

[0391] The second frequency band supports the following transmit power levels;

[0392] The number of RF paths used for uplink and / or downlink in the second frequency band;

[0393] The number of multiple input-output MIMO layers supported by the uplink and / or downlink carriers of the second frequency band.

[0394] In some embodiments, the first communication unit 2401 is further configured to send third information, the third information being used to indicate one or more first frequency bands, the first frequency bands being frequency bands supported by the terminal device.

[0395] In some embodiments, the first communication unit 2401 is further configured to transmit fourth information, the fourth information including parameters of the one or more first frequency bands.

[0396] In some embodiments, the fourth information includes one or more fourth parameters of the first frequency band, wherein the fourth parameters are parameters for the first frequency band to operate in a single frequency band.

[0397] In some embodiments, the one or more fourth parameters include one or more of the following:

[0398] The subcarrier spacing supported by the first frequency band;

[0399] The uplink carrier bandwidth and / or downlink carrier bandwidth supported by the first frequency band;

[0400] The fifth indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the first frequency band are the same;

[0401] The sixth indication information is used to indicate whether the first frequency band supports flexible duplex spacing;

[0402] The duplex mode of uplink and downlink carriers in the first frequency band;

[0403] The transmit power levels supported by the first frequency band;

[0404] The number of RF paths used for uplink and / or downlink in the first frequency band;

[0405] Modulation method.

[0406] In some embodiments, the first communication unit 2401 is further configured to receive fifth information, which is related to the first information, and the fifth information is used to configure one or more fifth frequency bands, which are frequency bands used by the terminal device.

[0407] The first communication unit in the terminal device can be implemented by the transceiver in the terminal device.

[0408] Figure 25 is a schematic diagram of the structural composition of a network device provided in an embodiment of this application. As shown in Figure 25, the network device 2500 includes:

[0409] The second communication unit 2501 is configured to receive first information sent by the terminal device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

[0410] In some embodiments, the multiple frequency bands of frequency division multiplexing are used for one or more of the following: carrier aggregation, SUL, dual connectivity.

[0411] In some embodiments, the first frequency band group is a subset of one of a plurality of second frequency band groups.

[0412] In some embodiments, the first frequency band group consists of a first frequency band in the second frequency band group, wherein the first frequency band is a frequency band supported by the terminal device.

[0413] In some embodiments, the second frequency band group is a subset of the frequency bands included in one of a plurality of frequency ranges.

[0414] In some embodiments, M of the plurality of second frequency band groups are located in one of the plurality of frequency ranges, where M is greater than or equal to 1.

[0415] In some embodiments, when a first frequency range in the plurality of frequency ranges includes M second frequency bands and M is greater than 1, the rule for dividing the frequency bands included in the first frequency range into M second frequency band groups includes one or more of the following: in the first frequency range, two frequency bands with overlapping spectra are located in the same second frequency band group; in the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval less than a first frequency interval are located in the same second frequency band group; in the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval greater than a second frequency interval are located in different second frequency band groups.

[0416] In some embodiments, the frequency range includes frequencies below 1 GHz; the second frequency band group included in the frequency range includes one or more of the following: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, {n13, n14, n28, n20}.

[0417] In some embodiments, the frequency range includes 1 GHz to 1.7 GHz; the second frequency band group included in the frequency range includes one or more of the following: {n24, n50, n51, n74, n75, n76, n99}, {n54}.

[0418] In some embodiments, the frequency range includes 1.6 GHz to 3 GHz; the second frequency band group included in the frequency range includes one or more of the following: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n98, n101}, {n2, n3, n25, n39, n98}, {n30, n40, n97}, {n7, n38, n41, n53, n90}.

[0419] In some embodiments, the second communication unit 2501 is further configured to receive second information sent by the terminal device, the second information including parameters of the one or more first frequency band groups.

[0420] In some embodiments, the second information includes one or more of the following: a first parameter, wherein the first parameter is an aggregation parameter of frequency bands among the first frequency band groups; one or more second parameters of the first frequency band group, wherein the second parameter is a common parameter among frequency bands within the first frequency band group; and one or more third parameters of the second frequency band, wherein the third parameter is a parameter of the second frequency band used for multi-band aggregation and / or frequency band selection, wherein the second frequency band is a frequency band in the first frequency band group.

[0421] In some embodiments, the first parameter includes: the transmit power level of the uplink aggregation.

[0422] In some embodiments, the one or more second parameters include one or more of the following:

[0423] First indication information, the first indication information is used to indicate whether the first frequency band group supports inter-band switching;

[0424] The first time is the switching time between frequency bands in the first frequency band group;

[0425] The second indication information is used to indicate the switching mode of the frequency band switching of the first frequency band group.

[0426] In some embodiments, the switching mode for inter-band switching includes one or more of the following:

[0427] Switching from full-duplex in the third frequency band to downlink in the fourth frequency band;

[0428] Switching from full-duplex in the third frequency band to downlink in the third frequency band and downlink in the fourth frequency band;

[0429] Switching from full-duplex in the third frequency band to uplink in the fourth frequency band;

[0430] Switching from full-duplex in the third frequency band to full-duplex in the fourth frequency band;

[0431] Switching from uplink in the third frequency band to full-duplex in the fourth frequency band;

[0432] The frequency band before the frequency band switch includes the third frequency band, and the frequency band after the frequency band switch includes the fourth frequency band or includes both the third frequency band and the fourth frequency band.

[0433] In some embodiments, the one or more third parameters include one or more of the following:

[0434] The number of carriers supported by the second frequency band;

[0435] The subcarrier spacing supported by the second frequency band;

[0436] The bandwidth of the uplink carrier and / or the bandwidth of the downlink carrier supported by the second frequency band;

[0437] The third indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the second frequency band are the same;

[0438] The fourth indication information is used to indicate whether the second frequency band supports flexible duplex spacing;

[0439] The uplink and downlink carrier duplex modes of the second frequency band;

[0440] The second frequency band supports the following transmit power levels;

[0441] The number of RF paths used for uplink and / or downlink in the second frequency band;

[0442] The number of multiple input-output MIMO layers supported by the uplink and / or downlink carriers of the second frequency band.

[0443] In some embodiments, the second communication unit 2501 is further configured to receive third information sent by the terminal device, the third information being used to indicate one or more first frequency bands, the first frequency bands being frequency bands supported by the terminal device.

[0444] In some embodiments, the second communication unit 2501 is further configured to receive fourth information sent by the terminal device, the fourth information including parameters of the one or more first frequency bands.

[0445] In some embodiments, the fourth information includes one or more fourth parameters of the first frequency band, wherein the fourth parameters are parameters for the first frequency band to operate in a single frequency band.

[0446] In some embodiments, the one or more fourth parameters include one or more of the following:

[0447] The subcarrier spacing supported by the first frequency band;

[0448] The uplink carrier bandwidth and / or downlink carrier bandwidth supported by the first frequency band;

[0449] The fifth indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the first frequency band are the same;

[0450] The sixth indication information is used to indicate whether the first frequency band supports flexible duplex spacing;

[0451] The duplex mode of uplink and downlink carriers in the first frequency band;

[0452] The transmit power levels supported by the first frequency band;

[0453] The number of RF paths used for uplink and / or downlink in the first frequency band;

[0454] Modulation method.

[0455] In some embodiments, the second communication unit 2501 is further configured to send fifth information to the terminal device, the fifth information being related to the first information, the fifth information being used to configure one or more fifth frequency bands, the fifth frequency band being a frequency band used by the terminal device.

[0456] The second communication unit in a network device can be implemented by a transceiver in the network device.

[0457] Those skilled in the art should understand that the descriptions of the terminal devices or network devices described in the embodiments of this application can be understood with reference to the descriptions of the wireless communication methods described in the embodiments of this application.

[0458] Figure 26 is a schematic structural diagram of a communication device 2600 provided in an embodiment of this application. This communication device can be a terminal device or a network device. The communication device 2600 shown in Figure 26 includes a processor 2610, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0459] Optionally, as shown in FIG26, the communication device 2600 may further include a memory 2620. The processor 2610 may retrieve and run computer programs from the memory 2620 to implement the methods in the embodiments of this application.

[0460] The memory 2620 can be a separate device independent of the processor 2610, or it can be integrated into the processor 2610.

[0461] Optionally, as shown in FIG26, the communication device 2600 may further include a transceiver 2630, and the processor 2610 may control the transceiver 2630 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0462] The transceiver 2630 may include a transmitter and a receiver. The transceiver 2630 may further include an antenna, which may be one or more.

[0463] Optionally, the communication device 2600 may specifically be a network device in the embodiments of this application, and the communication device 2600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0464] Optionally, the communication device 2600 may specifically be a terminal device in the embodiments of this application, and the communication device 2600 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0465] Figure 27 is a schematic structural diagram of a chip according to an embodiment of this application. The chip 2700 shown in Figure 27 includes a processor 2710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0466] Optionally, as shown in FIG27, chip 2700 may further include memory 2720. Processor 2710 may retrieve and run computer programs from memory 2720 to implement the methods in the embodiments of this application.

[0467] The memory 2720 can be a separate device independent of the processor 2710, or it can be integrated into the processor 2710.

[0468] Optionally, the chip 2700 may also include an input interface 2730. The processor 2710 can control the input interface 2730 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0469] Optionally, the chip 2700 may also include an output interface 2740. The processor 2710 can control the output interface 2740 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0470] Optionally, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0471] Optionally, the chip can be applied to the terminal device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0472] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0473] Figure 28 is a schematic block diagram of a communication system 2800 provided in an embodiment of this application. As shown in Figure 28, the communication system 2800 includes a terminal device 2810 and a network device 2820.

[0474] The network device can be used to implement the corresponding functions implemented by the network device in the above method, which will not be elaborated here for the sake of simplicity. The terminal device can be used to implement the corresponding functions implemented by the terminal device in the above method, which will not be elaborated here for the sake of simplicity.

[0475] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0476] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0477] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0478] This application also provides a computer-readable storage medium for storing computer programs.

[0479] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0480] Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0481] This application also provides a computer program product, including computer program instructions.

[0482] Optionally, the computer program product can be applied to the network device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0483] Optionally, the computer program product can be applied to the terminal device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0484] This application also provides a computer program.

[0485] Optionally, the computer program can be applied to the network device in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0486] Optionally, the computer program can be applied to the terminal device in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0487] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0488] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0489] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0490] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0491] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0492] If the aforementioned functions are implemented as 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 this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0493] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireless communication method, the method comprising: The terminal device sends first information, which indicates one or more first frequency band groups supported by the terminal device.

2. The method according to claim 1, wherein, Multiple frequency bands in frequency division multiplexing are used for one or more of the following: carrier aggregation, supplementary uplink, and dual connectivity.

3. The method according to claim 1 or 2, wherein, The first frequency band group is a subset of one of the multiple second frequency band groups.

4. The method according to claim 3, wherein, The first frequency band group is composed of the first frequency band in the second frequency band group, and the first frequency band is a frequency band supported by the terminal device.

5. The method according to claim 3 or 4, wherein, The second frequency band group is a subset of frequency bands within a frequency range packet among multiple frequency ranges.

6. The method according to any one of claims 3 to 5, wherein, M of the plurality of second frequency band groups are located in one of the plurality of frequency ranges, where M is greater than or equal to 1.

7. The method according to claim 6, wherein, When a first frequency range in the plurality of frequency ranges includes M second frequency bands and M is greater than 1, the rule for dividing the frequency bands included in the first frequency range into M second frequency band groups includes one or more of the following: In the first frequency range, two frequency bands with overlapping spectra are located in the same second frequency band group; In the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval smaller than the first frequency interval are located in the same second frequency band group; In the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval greater than the second frequency interval are located in different second frequency band groups.

8. The method according to claim 6 or 7, wherein, The frequency range includes frequencies below 1 GHz; The second frequency band group included in the frequency range includes one or more of the following: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, {n13, n14, n28, n20}.

9. The method according to claim 6 or 7, wherein, The frequency range includes 1 GHz to 1.7 GHz; The second frequency band group included in the frequency range includes one or more of the following: {n24, n50, n51, n74, n75, n76, n99}, {n54}.

10. The method according to claim 6 or 7, wherein, The frequency range includes 1.6 GHz to 3 GHz; The second frequency band group included in the frequency range includes one or more of the following: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n9 8, n101}, {n2, n3, n25, n39, n98}, {n30, n40, n97}, {n7, n38, n41, n53, n90}.

11. The method according to any one of claims 1 to 10, wherein, The method further includes: The terminal device sends second information, which includes parameters of the one or more first frequency band groups.

12. The method according to claim 11, wherein, The second information includes one or more of the following: The first parameter is the aggregation parameter of the frequency bands among the first frequency band groups; One or more second parameters of the first frequency band group, wherein the second parameters are common parameters among the frequency bands within the first frequency band group; One or more third parameters of the second frequency band, wherein the third parameters are parameters of the second frequency band used for multi-band aggregation and / or frequency band selection, and the second frequency band is a frequency band in the first frequency band group.

13. The method according to claim 12, wherein, The first parameter includes: Uplink aggregation transmit power level.

14. The method according to claim 11 or 12, wherein, The one or more second parameters include one or more of the following: First indication information, the first indication information is used to indicate whether the first frequency band group supports inter-band switching; The first time is the switching time between frequency bands in the first frequency band group; The second indication information is used to indicate the switching mode of the frequency band switching of the first frequency band group.

15. The method according to claim 14, wherein, The switching modes between frequency bands include one or more of the following: Switching from full-duplex in the third frequency band to downlink in the fourth frequency band; Switching from full-duplex in the third frequency band to downlink in the third frequency band and downlink in the fourth frequency band; Switching from full-duplex in the third frequency band to uplink in the fourth frequency band; Switching from full-duplex in the third frequency band to full-duplex in the fourth frequency band; Switching from uplink in the third frequency band to full-duplex in the fourth frequency band; The frequency band before the frequency band switch includes the third frequency band, and the frequency band after the frequency band switch includes the fourth frequency band or includes both the third frequency band and the fourth frequency band.

16. The method according to any one of claims 12 to 15, wherein, The one or more third parameters include one or more of the following: The number of carriers supported by the second frequency band; The subcarrier spacing supported by the second frequency band; The bandwidth of the uplink carrier and / or the bandwidth of the downlink carrier supported by the second frequency band; The third indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the second frequency band are the same; The fourth indication information is used to indicate whether the second frequency band supports flexible duplex spacing; The uplink and downlink carrier duplex modes of the second frequency band; The second frequency band supports the following transmit power levels; The number of RF paths used for uplink and / or downlink in the second frequency band; The number of multiple input-output MIMO layers supported by the uplink and / or downlink carriers of the second frequency band.

17. The method according to any one of claims 1 to 16, wherein, The method further includes: The terminal device sends third information, which is used to indicate one or more first frequency bands, wherein the first frequency band is a frequency band supported by the terminal device.

18. The method according to claim 17, wherein, The method further includes: The terminal device sends fourth information, which includes parameters of the one or more first frequency bands.

19. The method according to claim 18, wherein, The fourth information includes one or more fourth parameters of the first frequency band, wherein the fourth parameters are parameters of the first frequency band for single-band operation.

20. The method according to claim 19, wherein, The one or more fourth parameters include one or more of the following: The subcarrier spacing supported by the first frequency band; The uplink carrier bandwidth and / or downlink carrier bandwidth supported by the first frequency band; The fifth indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the first frequency band are the same; The sixth indication information is used to indicate whether the first frequency band supports flexible duplex spacing; The duplex mode of uplink and downlink carriers in the first frequency band; The transmit power levels supported by the first frequency band; The number of RF paths used for uplink and / or downlink in the first frequency band; Modulation method.

21. The method according to any one of claims 1 to 20, wherein, The method further includes: The terminal device receives fifth information, which is related to the first information. The fifth information is used to configure one or more fifth frequency bands, which are frequency bands used by the terminal device.

22. A wireless communication method, the method comprising: The network device receives first information sent by the terminal device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

23. The method according to claim 22, wherein, Multiple frequency bands in frequency division multiplexing are used for one or more of the following: carrier aggregation, supplementary uplink SUL, and dual connectivity.

24. The method according to claim 22 or 23, wherein, The first frequency band group is a subset of one of the multiple second frequency band groups.

25. The method according to claim 24, wherein, The first frequency band group is composed of the first frequency band in the second frequency band group, and the first frequency band is a frequency band supported by the terminal device.

26. The method according to claim 24 or 25, wherein, The second frequency band group is a subset of the frequency bands included in one of multiple frequency ranges.

27. The method according to any one of claims 24 to 26, wherein, M of the plurality of second frequency band groups are located in one of the plurality of frequency ranges, where M is greater than or equal to 1.

28. The method according to claim 27, wherein, When the first frequency range in the plurality of frequency ranges includes M second frequency bands and M is greater than 1, the rule for dividing the frequency bands included in the first frequency range into M second frequency band groups includes one or more of the following: In the first frequency range, two frequency bands with overlapping spectra are located in the same second frequency band group; In the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval smaller than the first frequency interval are located in the same second frequency band group; In the first frequency range, two frequency bands with adjacent spectral positions and a frequency interval greater than the second frequency interval are located in different second frequency band groups.

29. The method according to claim 27 or 28, wherein, The frequency range includes frequencies below 1 GHz; The second frequency band group included in the frequency range includes one or more of the following: {n12, n13, n14, n28, n29, n71, n83, n85, n105}, {n5, n8, n18, n20, n26, n81, n82, n89, n100, n106}, {n13, n14, n28, n20}.

30. The method according to claim 27 or 28, wherein, The frequency range includes 1 GHz to 1.7 GHz; The second frequency band group included in the frequency range includes one or more of the following: {n24, n50, n51, n74, n75, n76, n99}, {n54}.

31. The method according to claim 27 or 28, wherein, The frequency range includes 1.6 GHz to 3 GHz; The second frequency band group included in the frequency range includes one or more of the following: {n3, n66, n70, n80, n86}, {n1, n2, n25, n34, n39, n65, n66, n70, n84, n95, n9 8, n101}, {n2, n3, n25, n39, n98, {n30, n40, n97}, {n7, n38, n41, n53, n90}.

32. The method according to any one of claims 22 to 31, wherein, The method further includes: The network device receives second information sent by the terminal device, the second information including parameters of the one or more first frequency band groups.

33. The method according to claim 32, wherein, The second information includes one or more of the following: The first parameter is the aggregation parameter of the frequency bands among the first frequency band groups; One or more second parameters of the first frequency band group, wherein the second parameters are common parameters among the frequency bands within the first frequency band group; One or more third parameters of the second frequency band, wherein the third parameters are parameters of the second frequency band used for multi-band aggregation and / or frequency band selection, and the second frequency band is a frequency band in the first frequency band group.

34. The method according to claim 33, wherein, The first parameter includes: Uplink aggregation transmit power level.

35. The method according to claim 32 or 33, wherein, The one or more second parameters include one or more of the following: First indication information, the first indication information is used to indicate whether the first frequency band group supports inter-band switching; The first time is the switching time between frequency bands in the first frequency band group; The second indication information is used to indicate the switching mode of the frequency band switching of the first frequency band group.

36. The method according to claim 35, wherein, The switching modes between frequency bands include one or more of the following: Switching from full-duplex in the third frequency band to downlink in the fourth frequency band; Switching from full-duplex in the third frequency band to downlink in the third frequency band and downlink in the fourth frequency band; Switching from full-duplex in the third frequency band to uplink in the fourth frequency band; Switching from full-duplex in the third frequency band to full-duplex in the fourth frequency band; Switching from uplink in the third frequency band to full-duplex in the fourth frequency band; The frequency band before the frequency band switch includes the third frequency band, and the frequency band after the frequency band switch includes the fourth frequency band or includes both the third frequency band and the fourth frequency band.

37. The method according to any one of claims 33 to 36, wherein, The one or more third parameters include one or more of the following: The number of carriers supported by the second frequency band; The subcarrier spacing supported by the second frequency band; The bandwidth of the uplink carrier and / or the bandwidth of the downlink carrier supported by the second frequency band; The third indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the second frequency band are the same; The fourth indication information is used to indicate whether the second frequency band supports flexible duplex spacing; The uplink and downlink carrier duplex modes of the second frequency band; The second frequency band supports the following transmit power levels; The number of RF paths used for uplink and / or downlink in the second frequency band; The number of multiple input-output MIMO layers supported by the uplink and / or downlink carriers of the second frequency band.

38. The method according to any one of claims 22 to 37, wherein, The method further includes: The network device receives third information sent by the terminal device, the third information being used to indicate one or more first frequency bands, the first frequency bands being frequency bands supported by the terminal device.

39. The method according to claim 38, wherein, The method further includes: The network device receives fourth information sent by the terminal device, the fourth information including parameters for the one or more first frequency bands to operate in a single frequency band.

40. The method according to claim 39, wherein, The fourth information includes one or more fourth parameters of the first frequency band, wherein the fourth parameters are parameters of the first frequency band for single-band operation.

41. The method according to claim 40, wherein, The one or more fourth parameters include one or more of the following: The subcarrier spacing supported by the first frequency band; The uplink carrier bandwidth and / or downlink carrier bandwidth supported by the first frequency band; The fifth indication information is used to indicate whether the bandwidth of the uplink carrier and the bandwidth of the downlink carrier in the first frequency band are the same; The sixth indication information is used to indicate whether the first frequency band supports flexible duplex spacing; The duplex mode of uplink and downlink carriers in the first frequency band; The transmit power levels supported by the first frequency band; The number of RF paths used for uplink and / or downlink in the first frequency band; Modulation method.

42. The method according to any one of claims 22 to 41, wherein, The method further includes: The network device sends a fifth piece of information to the terminal device. The fifth piece of information is related to the first piece of information. The fifth piece of information is used to configure one or more fifth frequency bands, which are the frequency bands used by the terminal device.

43. A terminal device, comprising: The first communication unit is configured to send first information, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

44. A network device, comprising: The second communication unit is configured to receive first information sent by the terminal device, the first information being used to indicate one or more first frequency band groups supported by the terminal device.

45. A communication device, comprising: A transceiver, a processor, and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to cooperate with the transceiver in performing the method as described in any one of claims 1 to 21, or in performing the method as described in any one of claims 22 to 42.

46. ​​A chip, comprising: A processor for retrieving and running a computer program from memory, causing a device having the chip mounted to perform the method as claimed in any one of claims 1 to 21, or the method as claimed in any one of claims 22 to 42.

47. A computer-readable storage medium for storing a computer program, the execution of which causes the computer to perform the method as claimed in any one of claims 1 to 21, or the method as claimed in any one of claims 22 to 42.

48. A computer program product comprising computer program instructions, the execution of which causes a computer to perform the method as claimed in any one of claims 1 to 21, or to perform the method as claimed in any one of claims 22 to 42.

49. A computer program, the execution of which causes a computer to perform the method as claimed in any one of claims 1 to 21, or to perform the method as claimed in any one of claims 22 to 42.

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