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

Abstract

The present application provides a wireless communication method, a device, a chip, a storage medium, and a program product. The method comprises: a network device determines a first maximum configurable channel bandwidth and a first guard band within a first channel bandwidth, wherein the first maximum configurable channel bandwidth and the first guard band are related to first information, the first information comprises one or more first relationships, and the first relationship is used to indicate a relationship between a second channel bandwidth and a second maximum configurable channel bandwidth.

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] In mobile communication systems, a series of independent channel bandwidths are defined to simplify the implementation of terminals and networks, avoiding the implementation complexity caused by excessive fragmented bandwidth. However, the spectrum owned by a terminal device may not be exactly equal to a certain channel bandwidth or the sum of several channel bandwidths. This will result in the terminal device only being able to use a portion of the bandwidth it owns, causing spectrum waste. 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 network device determines a first maximum configurable channel bandwidth and a first guard band in the first channel bandwidth, and the first maximum configurable channel bandwidth and the first guard band are related to the first information;

[0006] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0007] The wireless communication method provided in this application includes:

[0008] The terminal device determines the first channel bandwidth and the first guard band corresponding to the fourth quantity, wherein the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth, and the first channel bandwidth and the first guard band are related to the first information;

[0009] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

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

[0011] The first determining unit is configured to determine a first maximum configurable channel bandwidth and a first guard band in the first channel bandwidth, wherein the first maximum configurable channel bandwidth and the first guard band are related to the first information;

[0012] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0013] The terminal device provided in this application embodiment includes:

[0014] The second determining unit is configured to determine the first channel bandwidth and the first guard band corresponding to the fourth quantity, wherein the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth, and the first channel bandwidth and the first guard band are related to the first information;

[0015] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0016] 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.

[0017] The chip provided in this application embodiment is used to implement the above-described wireless communication method.

[0018] 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.

[0019] 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.

[0020] The computer program product provided in this application includes computer program instructions that cause a computer to execute the above-described wireless communication method.

[0021] The computer program provided in this application embodiment, when run on a computer, causes the computer to execute the above-described wireless communication method.

[0022] The above technical solution determines the maximum configurable channel bandwidth and guard band in the first channel bandwidth based on the first information. The first information includes a predefined mapping relationship between the second channel bandwidth and the second maximum configurable channel bandwidth. This enables flexible bandwidth configuration based on the predefined mapping relationship between the second channel bandwidth and the second maximum configurable channel bandwidth, avoiding the waste of spectrum resources caused by discrete channel bandwidth definitions. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0025] Figure 2 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0026] Figure 3 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0027] Figure 4 is a schematic diagram of the optional channel bandwidth provided in an embodiment of this application;

[0028] Figure 5 is a schematic diagram of the channel bandwidth, maximum configurable channel bandwidth, and guard band options provided in the embodiments of this application;

[0029] Figure 6 is a schematic diagram showing the optional relationship between power spectral density and out-of-band spectrum requirements provided in an embodiment of this application;

[0030] Figure 7 is a schematic diagram showing the optional relationship between power spectral density and out-of-band spectrum requirements provided in an embodiment of this application;

[0031] Figure 8 is a schematic diagram of the optional land relationship of the wireless communication method provided in the embodiments of this application;

[0032] Figure 9 is a schematic diagram illustrating the optional channel bandwidth, maximum configurable channel bandwidth, and guard band provided in an embodiment of this application.

[0033] Figure 10 is a schematic diagram illustrating the optional channel bandwidth, maximum configurable channel bandwidth, and guard band provided in an embodiment of this application.

[0034] Figure 11 is a schematic diagram of the optional land relationship of the wireless communication method provided in the embodiment of this application;

[0035] Figure 12 is a schematic diagram of the optional land relationship of the wireless communication method provided in the embodiment of this application;

[0036] Figure 13 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0037] Figure 14 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0038] Figure 15 is an optional flowchart of the wireless communication method provided in an embodiment of this application;

[0039] Figure 16 is a schematic diagram of an optional structure of a network device provided in an embodiment of this application;

[0040] Figure 17 is a schematic diagram of an optional structure of a network device provided in an embodiment of this application;

[0041] Figure 18 is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0042] Figure 19 is a schematic structural diagram of a chip according to an embodiment of this application;

[0043] Figure 20 is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Terminal device 110 can be used for device-to-device (D2D) communication.

[0051] 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.

[0052] The various functional units in the communication system 100 can also establish connections and communicate with each other through the next generation (NG) interface.

[0053] 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.

[0054] NTN typically uses satellite communication to provide communication services to terrestrial users. Compared to terrestrial cellular network communication, satellite communication has many unique advantages.

[0055] 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.

[0056] Figure 2 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application.

[0057] 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.

[0058] Figure 3 is a schematic diagram of the architecture of another communication system provided in an embodiment of this application.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] In mobile communication systems, a series of independent channel bandwidths are typically defined to simplify the implementation of terminals and networks, and to align the understanding of channel bandwidth between the network and terminals.

[0063] As shown in Figure 5, the channel bandwidth includes the maximum configurable channel bandwidth and the guard bands on both sides. The maximum configurable channel bandwidth can be represented as N resource blocks (RBs), i.e., N*RB.

[0064] Different channel bandwidths require different guard band sizes, so the maximum configurable channel bandwidth does not increase proportionally with the increase of channel bandwidth, as shown in Tables 1 and 2 (including Tables 2.1 and 2.2).

[0065] Table 1. Channel bandwidth and maximum configurable channel bandwidth and their spectrum utilization (SU)

[0066] Table 2.1: Channel bandwidth and its minimum guard bandwidth

[0067] Table 2.2: Channel bandwidth and its minimum guard bandwidth

[0068] Here, N / A indicates that it is not applicable.

[0069] The size of the guard bandwidth needs to take into account the influence of the spectral characteristics of the baseband output signal. Figures 6 and 7 show the relative relationship between the baseband output signal spectrum (based on power spectral density (PSD)) and the out-of-band spectrum requirements (spurious emission mask, SEM-mask) for the cases with one RB and full RB configuration, respectively. The larger the guard bandwidth, the easier it is to meet the out-of-band spectrum requirements; conversely, the smaller the guard bandwidth, the more difficult it is to meet the out-of-band spectrum requirements. In addition, an excessively large guard bandwidth will reduce the maximum configurable channel bandwidth, thereby reducing the overall spectrum utilization.

[0070] Therefore, the size of the protection bandwidth must take into account both out-of-band spurious emission requirements and spectral efficiency. In the NR phase, the spectral efficiency of the 15kHz SCS is required to be greater than 90%, as shown in Table 1 for the spectral efficiency of each channel bandwidth.

[0071] The maximum configurable channel bandwidth and minimum guard band can be used to determine the maximum spectral efficiency. The spectral efficiency SU of the channel bandwidth is defined as: maximum configurable channel bandwidth / channel bandwidth, i.e., N*RB / CBW.

[0072] Frequency band definition

[0073] Table 3 shows the frequency band definitions and spectrum information of the licensed spectrum in NR.

[0074] As shown in Table 3, NR defines frequency bands n1, n2, and n3, and fixes the uplink spectrum, downlink spectrum, and operating mode for each band. Among these, n1 to n41 are refarmed spectrums for LTE, with relatively narrow spectrum ranges. n77, n78, and n79 are newly defined frequency bands in NR, with larger spectrum ranges; for example, n78 has a spectrum range of 500MHz, while n77 and n79 have spectrum ranges greater than 500MHz. Millimeter wave bands are also defined, with even larger spectrum ranges, the smallest being greater than 850MHz.

[0075] Table 4 shows the millimeter wave frequency band, which has a larger spectral range, with the smallest being greater than 850MHz.

[0076] Table 4. Millimeter wave frequency bands and their spectral definitions

[0077] With the continuous decommissioning of 2G, 3G, and 4G networks and the corresponding spectrum refarming, future communication systems will inevitably face increasingly fragmented spectrum. Furthermore, there is a high probability that this spectrum cannot directly utilize the defined discrete bandwidths, leading to increasingly widespread spectrum waste. Therefore, it is necessary to consider how to optimize the definition of channel bandwidth to fully utilize operators' spectrum. Figure 5 shows a partial list of fragmented spectrum in various regions.

[0078] Table 5 shows the fragmented spectrum of each region.

[0079] In NR, during initial access, the network will assign the terminal a corresponding SCS with a maximum configurable channel bandwidth N. RB After entering the connected state, the terminal will report the bandwidth of all channels it supports in the supported frequency bands to the network via capability signaling. The network will then determine the maximum configurable channel bandwidth N based on the capabilities reported by the terminal and the maximum configurable channel bandwidth N defined in Table 1. RB Configure the terminal with the maximum configurable channel bandwidth N under the corresponding SCS. RB Number. The protection bandwidth is only to ensure that the terminal and network implementation can meet various spurious requirements.

[0080] First, as shown in Figure 3, except for 3MHz, these bandwidths are all integer multiples of 5MHz. However, the actual spectrum owned by an operator may not be exactly equal to the bandwidth of a certain channel or the sum of the bandwidths of several channels. This will result in operators only being able to use a portion of the available bandwidth, leading to spectrum waste.

[0081] Secondly, the amount of spectrum owned by operators varies in different frequency ranges. For example, in the frequency bands refarmed for LTE, the spectrum owned by operators is relatively narrow due to the narrow spectrum width of each band, resulting in more severe spectrum fragmentation.

[0082] Furthermore, the relationship between the current channel bandwidth and the maximum configurable channel bandwidth and guard band is determined through discussion. This means that if new channel bandwidth requirements are added, the useful bandwidth and guard band will need to be redefined through discussion.

[0083] 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.

[0084] This application provides a wireless communication method applied to a network device, as shown in Figure 8, including:

[0085] S801, The network device determines a first maximum configurable channel bandwidth and a first guard band in the first channel bandwidth, wherein the first maximum configurable channel bandwidth and the first guard band are related to the first information;

[0086] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0087] The wireless communication method shown in Figure 8 will now be described.

[0088] The first channel bandwidth can be understood as the channel bandwidth of a carrier on the network side. The first channel bandwidth is the channel bandwidth that can support flexible configuration of the maximum configurable channel bandwidth, and the first channel bandwidth can be called the flexible channel bandwidth.

[0089] The first maximum configurable channel bandwidth can be understood as the maximum configurable channel bandwidth within the first channel bandwidth. The maximum configurable channel bandwidth can also be called the useful channel bandwidth. The first guard band can be understood as the minimum guard band within the first channel bandwidth. The first channel bandwidth may include two first guard bands, located on either side of the first maximum configurable channel bandwidth.

[0090] The network device determines the first maximum configurable channel bandwidth and the first guard band within the first channel bandwidth based on the first information. The first channel bandwidth can be identified as X.

[0091] In the case of multiple carriers, the network device can determine a corresponding first maximum configurable channel bandwidth and a first guard band for each carrier based on the first channel bandwidth of each carrier. The first channel bandwidths of different carriers may be the same or different.

[0092] The first piece of information can be understood as a predefined mapping relationship between the channel bandwidth grid and the maximum configured channel bandwidth. This first piece of information can appear in a table or list format.

[0093] The first information includes one or more first relationships, which indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth. Here, the second channel bandwidth can be understood as a predefined channel bandwidth grid, and the second maximum configurable channel bandwidth can be understood as the maximum configurable channel bandwidth within the second channel bandwidth.

[0094] In this embodiment of the application, the second channel bandwidth in the first information can be a bandwidth defined in NR, including 3MHz and integer multiples of 5MHz such as 5MHz, 10MHz, etc., or it can be a custom bandwidth.

[0095] In one example, taking the second channel bandwidth in the first information as an example that can be a bandwidth defined in NR including 3MHz and integer multiples of 5MHz such as 5MHz, 10MHz, etc., the first information includes: the first relationship between 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz and the corresponding maximum configurable channel bandwidth.

[0096] In this embodiment of the application, determining the first maximum configurable channel bandwidth within the first channel bandwidth may include: determining a fourth quantity, where the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth. The fourth quantity may be identified as N. RB,c .

[0097] After determining the fourth quantity, the network device can configure it to the terminal device. The terminal device then determines the first maximum configurable channel bandwidth, the first channel bandwidth on the terminal side, and the first guard band based on the fourth quantity. Understandably, the first channel bandwidth on the terminal side and the first channel bandwidth on the network side can be the same or different. In one example, the first channel bandwidth on the terminal side is less than or equal to the first channel bandwidth on the network side.

[0098] The fourth quantity can be understood as the number of RBs included in the first maximum configurable channel bandwidth, or the maximum number of useful RBs in the first channel bandwidth.

[0099] In this embodiment, the network device determines the first maximum configurable channel bandwidth and the first guard band in the first channel bandwidth based on the first information of the relationship between the predefined indication channel bandwidth and the maximum configurable channel. The first maximum configurable channel bandwidth can be any channel bandwidth. Thus, flexible bandwidth configuration is achieved based on the mapping relationship between the defined second channel bandwidth and the second maximum configurable channel bandwidth. This ensures that the first maximum configurable channel bandwidth in the first channel bandwidth is not limited by the discrete maximum configurable channel bandwidth, avoiding the waste of spectrum resources caused by the definition of discrete channel bandwidth.

[0100] In some embodiments, the first relationship is used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under SCS.

[0101] In this embodiment of the application, for the second channel bandwidth, the first information may include one or more first relationships. When the first information includes multiple first relationships, different first relationships indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under different SCS conditions. SCS may include: 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, etc.

[0102] In one example, the first information includes: the first relationship between the channel bandwidths of 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz at 15kHz, 30kHz, and 60kHz and the corresponding maximum configurable channel bandwidth.

[0103] At this time, the terminal device determines the first maximum configurable channel bandwidth and the first guard band in the first channel bandwidth based on the first information and the current SCS.

[0104] In this embodiment of the application, an RB includes multiple SCSs. When the SCSs are different, the size of the RB is different, and the number of RBs included in the same channel bandwidth is different.

[0105] In one example, an RB consists of 12 SCSs.

[0106] In this embodiment of the application, the first information includes a first relationship used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under the corresponding SCS, thereby adapting to the scenario requirements of different SCSs.

[0107] In this embodiment of the application, the first relationship may include, but is not limited to, one of the following:

[0108] Case 1: The primary relationship is related to the number of RBs;

[0109] Case 2: The first relationship is related to spectrum utilization.

[0110] In Case 1, the first relationship is the relationship between the second channel bandwidth and the number of RBs. The number of RBs reflects the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0111] In Case 2, the first relationship is the relationship between the second channel bandwidth and the first spectrum utilization rate. The first spectrum utilization rate reflects the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0112] The following explanation addresses scenario one.

[0113] In some embodiments, when the first relationship is Case 1, the first relationship is the relationship between the second channel bandwidth and the first quantity, the second quantity, and the third quantity; wherein...

[0114] The first quantity is the maximum number of RBs included in the second channel bandwidth;

[0115] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0116] The third quantity is the number of RBs included in the second guard band of the second channel bandwidth.

[0117] The first quantity can be understood as the maximum number of RBs that can be accommodated. The first quantity can be denoted as N. RB,t .

[0118] The first quantity is applied within the second channel bandwidth, where rounding down can be used. In this case, for the second channel bandwidth CBW, in MHz, the first quantity can be expressed as equation (1): N RB,t =floor(CBW*1000 / RB, 1) Formula (1);

[0119] In equation (1), RB can be expressed as equation (2), which represents the spectral width of an RB in kHz.

[0120] RB = 12 * SCS (2).

[0121] The second quantity can be the number of useful RBs in the second channel bandwidth, which can be understood as the number of useful RBs and can be denoted as N. RB,c That is, the number of RBs included in the second maximum configurable channel bandwidth.

[0122] The third quantity can be understood as the number of protection RBs, which can be understood as the RBs included in the second protection band of the second channel bandwidth. The third quantity can be represented by Y, where Y = N. RB,t -N RB,c .

[0123] Understandably, the second channel bandwidth includes two second guard bands, and the third quantity is the total number of RBs included in the two second guard bands.

[0124] In one example, the first information includes the first relationship as shown in Table 6.

[0125] Table 6. Second Channel Bandwidth and N RB,t N RB,c Example of the relationship between Y and

[0126] In Table 6, the second channel bandwidth included in the first information includes a 3MHz and a channel bandwidth grid that is an integer multiple of 5MHz, and the maximum channel bandwidth is 100MHz. Here, 100MHz is just an example. In actual applications, any N*5MHz can be used.

[0127] In some embodiments, the first channel bandwidth is one of one or more second channel bandwidths included in the first information;

[0128] The first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number is the second number corresponding to the first channel bandwidth in the first information;

[0129] The first protection band includes a fifth number of RBs, the fifth number being the third number corresponding to the first channel bandwidth in the first information.

[0130] The first channel bandwidth is one of one or more second channel bandwidths included in the first information. This can be understood as the first channel bandwidth being located on a channel bandwidth grid in a predefined mapping relationship. In one example, the first information includes the following second channel bandwidths: channel bandwidth 1, channel bandwidth 2, channel bandwidth 3, and channel bandwidth 4. If the first channel bandwidth is channel bandwidth 1, then the first channel bandwidth is considered to be one of one or more second channel bandwidths included in the first information.

[0131] At this point, the network device determines the first relationship corresponding to the first channel bandwidth in the first information, determines the first maximum configurable channel bandwidth based on the second quantity in the first relationship, and determines the first guard band based on the third quantity in the first relationship. It can be understood that the second quantity in the first relationship corresponding to the first channel bandwidth is the number of RBs included in the first maximum configurable channel bandwidth, i.e., the fourth quantity, and the third quantity in the first relationship is the number of RBs included in the first guard band, i.e., the fifth quantity.

[0132] Here, when the first information includes one or more first relationships corresponding to multiple SCSs, the network device determines the first relationship corresponding to the current first channel bandwidth among the one or more first relationships corresponding to the current SCS, and determines the second and third quantities corresponding to the first channel bandwidth based on the first relationship.

[0133] The current SCS can be predefined or configured by the network device.

[0134] Here, the third number is the size of the RBs included in the two first guard bands, therefore, the size of one first guard band is half the spectral width of the third number of RBs.

[0135] In some embodiments, the first information is used to determine the second information, the second information including one or more second relationships, the second relationship being the relationship between the channel bandwidth interval corresponding to the second channel bandwidth and the third quantity, and the third quantity corresponding to different channel bandwidth intervals is different.

[0136] The starting and ending bandwidths of the channel bandwidth range are different second channel bandwidths.

[0137] The second channel bandwidth corresponding to the channel bandwidth interval can be the starting bandwidth or the ending bandwidth of the channel bandwidth interval, and the third quantity corresponding to the channel bandwidth interval is the third quantity corresponding to the second channel bandwidth of the channel bandwidth interval.

[0138] In one example, taking the second channel bandwidth corresponding to the channel bandwidth interval as an example, which can be the end bandwidth of the channel bandwidth interval, the first information includes the following second channel bandwidths: 10MHz, 20MHz, and 30MHz; wherein, the second information determined by the first information includes the following channel bandwidth intervals: 0-10MHz, 10MHz-20MHz, and 20MHz-30MHz, wherein the third quantities corresponding to 0-10MHz, 10MHz-20MHz, and 20MHz-30MHz are the third quantities corresponding to 10MHz, 20MHz, and 30MHz, respectively.

[0139] In one example, taking the second channel bandwidth corresponding to the channel bandwidth range as the starting bandwidth of the channel bandwidth range as an example, the first information includes the following second channel bandwidths: 10MHz, 20MHz, and 30MHz; wherein, the second information determined by the first information includes the following channel bandwidth ranges: 10MHz-20MHz, 20MHz-30MHz, and greater than 30MHz, wherein the third quantities corresponding to 10MHz-20MHz, 20MHz-30MHz, and greater than 30MHz are the third quantities corresponding to 10MHz, 20MHz, and 30MHz, respectively.

[0140] In this embodiment of the application, it can be assumed that the third number of equal second channel bandwidths and the channel bandwidths between these second channel bandwidths are located in the same channel bandwidth range.

[0141] Here, the Y value and the corresponding SCS can be obtained from the first information to divide the second channel bandwidth into intervals, resulting in one or more channel bandwidth intervals. The channel bandwidth intervals of different SCSs can be the same or different.

[0142] In one example, the first information shown in Table 6 can determine the second information shown in Table 7.

[0143] Table 7. Example of the relationship between channel bandwidth range and Y

[0144] In this embodiment of the application, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information; the network device determines the first maximum configurable channel bandwidth and the first guard band in the first channel bandwidth according to the second information.

[0145] In this embodiment of the application, the definition of the first channel bandwidth may include one of the following definitions:

[0146] Definition 1: The bandwidth of the first channel is an integer multiple of the first bandwidth.

[0147] Definition 2: The bandwidth of the second channel is an integer multiple of RB.

[0148] The definition of the first channel bandwidth is based on the scenario in Definition 1.

[0149] The first channel bandwidth is defined as follows (under Definition 1): The first channel bandwidth uses the same unit as the second channel bandwidth: MHz. The step size between two adjacent first channel bandwidths is the first bandwidth, which can be identified as z. The unit of the first bandwidth can be MHz or kHz. The size of the first bandwidth differs from the bandwidth of the RB.

[0150] In some embodiments, the first bandwidth is an integer multiple of 100kHz. For example, 100kHz, 200kHz, etc.

[0151] In some embodiments, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information;

[0152] The first maximum configurable channel bandwidth includes a fourth number of RBs, which is determined based on a fifth number and a sixth number. The sixth number is the maximum number of RBs included in the first channel bandwidth, which can also be called the maximum number of RBs that the first channel bandwidth can accommodate. The fifth number is related to the second information.

[0153] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0154] The statement that the first channel bandwidth is not any of the one or more second channel bandwidths included in the first information can be understood as the first channel bandwidth not being located on a channel bandwidth grid in a predefined mapping relationship. In one example, if the first information includes the following second channel bandwidths: channel bandwidth 1, channel bandwidth 2, channel bandwidth 3, and channel bandwidth 4, and the first channel bandwidth is channel bandwidth 5, then the first channel bandwidth is considered not to be any of the one or more second channel bandwidths included in the first information.

[0155] The network device can determine the number of RBs included in the first channel bandwidth, i.e., the sixth number, and determine the number of RBs included in the first protection band, i.e., the fifth number, based on the second information. Then, it can determine the fourth number based on the fifth and sixth numbers, where the fourth number is the sixth number minus the fifth number.

[0156] After the network device determines the fourth quantity, as shown in Figure 9, the first maximum configurable channel bandwidth is determined based on the fourth quantity, and the total spectrum width of the two first guard bands is obtained by subtracting the first maximum configurable channel bandwidth from the first channel bandwidth.

[0157] For the first channel bandwidth, the sixth quantity N RB,t It can be expressed as equation (3): N RB,t＝ floor(X*1000 / RB formula (3).

[0158] Given the fifth quantity Y, the fourth quantity N RB,c =N RB,t -Y.

[0159] Based on Figure 9, when the first channel bandwidth is an integer multiple of the first bandwidth, it may not be an integer multiple of RB. In this case, in addition to the sixth number of RBs, the first channel bandwidth also includes the remaining bandwidth smaller than RB. Therefore, the size of the first protection band can be accurately determined by subtracting the first maximum configurable channel bandwidth from the first channel bandwidth.

[0160] In determining the fourth quantity N RB,c In this case, the total bandwidth of the two first protection bandwidths can be expressed as XN RB,c *RB-SCS, understandably, the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier. The spectral width of the center subcarrier may include, but is not limited to, one SCS. If the spectral width of the center subcarrier is changed to other values, the SCS here will be changed accordingly.

[0161] The spectral width GB of a first protection bandwidth can be expressed as equation (4): GB=(XN) RB,c *RB-SCS) / 2 Equation (4).

[0162] Understandably, the first and sixth quantities are used to represent the maximum number of RBs that can be accommodated by different channel bandwidths, and therefore, both are denoted as N. RB,t Similarly, the second and fourth quantities are used to represent the number of RBs that can be accommodated by different maximum configurable channel bandwidths, and are both identified as N. RB,c The third and fifth quantities are both used to represent the number of protection RBs that can be accommodated in different channel bandwidths, and can both be identified as Y.

[0163] In one example, the network's first channel bandwidth X = 7MHz, SCS = 15kHz, and RB = 12 * 15 = 180kHz. What is the maximum number of RBs it can accommodate, N? RB,t =floor(7*1000 / 180, 1) = 38. Since 7MHz falls within the 5-10MHz channel bandwidth range, Y = 3. The maximum configurable channel bandwidth is N. RB,c =38-3=35, correspondingly, the guard bandwidth GB for a 7MHz flexible channel bandwidth = (7*1000-N) RB,c *180-15) / 2=342.5kHz.

[0164] The definition of the bandwidth of the first channel is given in the scenario of Definition 2.

[0165] The definition of the first channel bandwidth, under Definition 2, is that the first channel bandwidth is an integer multiple of RB, and the step size between two adjacent first channel bandwidths is RB.

[0166] In some embodiments, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information;

[0167] The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on a fifth number and a sixth number, the sixth number being the maximum number of RBs included in the first channel bandwidth, and the fifth number being related to the second information;

[0168] The first protective strip includes the fifth number of RBs.

[0169] The network device can determine the number of RBs included in the first channel bandwidth, i.e., the sixth number, and determine the number of RBs included in the second protection band, i.e., the fifth number, based on the second information. Then, it can determine the fourth number based on the sixth and fifth numbers, where the fourth number is the sixth number minus the fifth number.

[0170] After determining the fourth quantity of network devices, as shown in Figure 10, the total spectral width of the two first protection bands is determined based on the fifth quantity.

[0171] For the first channel bandwidth, the sixth quantity N RB,t It can be expressed as equation (3).

[0172] Given the fifth quantity Y, the fourth quantity N RB,c =N RB,t -Y.

[0173] As shown in Figure 10, when the first channel bandwidth is an integer multiple of RB, the first channel bandwidth includes a sixth number of RBs, wherein the first maximum configurable bandwidth includes a fourth number of RBs, and the first guard band includes a fifth number of RBs.

[0174] In determining the fourth quantity N RB,c In this case, the total bandwidth of the two first protection bandwidths can be expressed as Y*RB-SCS. It can be understood that the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier.

[0175] The spectral width GB of a first protection bandwidth can be expressed as Equation (5): GB=(Y*RB-SCS) / 2 Equation (5).

[0176] In one example, the network device's first channel bandwidth X = 38 * RB / 1000 = 6.84 MHz, SCS = 15 kHz. Since the 38 RBs are located in the 5-10 MHz channel bandwidth range, Y = 3. The maximum number of RBs with configurable channel bandwidth N is... RB,c =35, and correspondingly, the protection bandwidth GB of the first channel bandwidth = (3*12*15-15) / 2 = 262.5kHz.

[0177] In some embodiments, the fifth quantity is related to the second information and includes:

[0178] The fifth quantity is the third quantity corresponding to the third channel bandwidth, the third channel bandwidth is the second channel bandwidth corresponding to the first channel bandwidth interval, and the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the second information.

[0179] The network device determines that the channel bandwidth of the first channel bandwidth is located in one or more channel bandwidth intervals included in the second information as the first channel bandwidth interval, and determines that the third quantity corresponding to the first channel bandwidth interval in multiple second relationships is the fifth quantity, wherein the fifth quantity is the third quantity corresponding to the second channel bandwidth corresponding to the first channel bandwidth interval.

[0180] In one example, the first channel bandwidth X is 7MHz and the SCS is 15KHz. In the second relationship shown in Table 7, 7MHz is located in the bandwidth range of 5-10MHz. Therefore, the fifth quantity is the third quantity corresponding to 10MHz: 3.

[0181] The following explanation addresses scenario two.

[0182] In some embodiments, when the first relationship is Case Two, the first relationship is the relationship between the second channel bandwidth and the second quantity and the first spectrum utilization rate; wherein...

[0183] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0184] The first spectrum utilization rate is the spectrum utilization rate of the second maximum configurable channel bandwidth occupied by the second channel bandwidth.

[0185] The second quantity is the number of useful RBs in the second channel bandwidth, which can be identified as N. RB,c That is, the number of RBs included in the second maximum configurable channel bandwidth.

[0186] The spectrum utilization rate SU is defined as: configurable channel bandwidth / channel bandwidth = N RB,c *RB / CBW. The first spectral utilization rate can be understood as the maximum spectral utilization rate of the configurable channel bandwidth within the second channel bandwidth.

[0187] In one example, the first information includes the first relationship as shown in Table 8.

[0188] Table 8. Second Channel Bandwidth and N RB,c and corresponding SU relationship examples

[0189] In Table 8, the second channel bandwidth included in the first information includes a 3MHz and a channel bandwidth grid that is an integer multiple of 5MHz, and the maximum channel bandwidth is 100MHz. Here, 100MHz is just an example. In actual applications, any N*5MHz can be used.

[0190] In some embodiments, the first channel bandwidth is one of one or more second channel bandwidths included in the first information;

[0191] The first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number is the second number corresponding to the first channel bandwidth in the first information;

[0192] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0193] The first channel bandwidth is one of one or more second channel bandwidths included in the first information. This can be understood as the first channel bandwidth being located on a channel bandwidth grid in a predefined mapping relationship. At this time, the network device determines the first relationship corresponding to the first channel bandwidth in the first information, determines the first maximum configurable channel bandwidth based on the second quantity in the first relationship, and subtracts the first maximum configurable channel bandwidth from the first channel bandwidth to obtain the first guard band. It can be understood that the first channel bandwidth minus the first maximum configurable channel bandwidth includes the sum of the spectral widths of two first guard bands, and the size of one first guard band is half the bandwidth obtained by subtracting the first maximum configurable channel bandwidth from the first channel bandwidth.

[0194] In some embodiments, the first information is used to determine third information, the third information including one or more channel bandwidth intervals, wherein the starting bandwidth and channel bandwidth of the channel bandwidth interval are two adjacent second channel bandwidths.

[0195] The starting and ending bandwidths of the channel bandwidth interval are the bandwidths of two adjacent second channels.

[0196] In one example, the first information shown in Table 8 can determine the third information shown in Table 9.

[0197] Table 9. Examples of Channel Bandwidth Ranges

[0198] In this application embodiment, for a channel bandwidth range, the corresponding spectral efficiency is determined by one or more of the following methods:

[0199] Method 1: Take the maximum spectral efficiency SU corresponding to the channel bandwidth range downwards from the starting point of the range to the SU corresponding to the second channel bandwidth. For example, for 5-10MHz, the corresponding maximum spectral efficiency SU is the SU of 5MHz.

[0200] Method 2: Take the maximum spectral efficiency SU corresponding to the channel bandwidth range upwards from the starting point of the range to the SU corresponding to the second channel bandwidth; for example, for 5-10MHz, the corresponding maximum spectral efficiency SU is taken as the SU of 10MHz.

[0201] Method 3: The individual SU corresponding to the channel bandwidth interval is the average of the SU corresponding to the start of the channel bandwidth interval and the S corresponding to the end of the channel bandwidth interval; for example, for 5-10MHz, the corresponding maximum spectrum utilization SU = (SU ​​of 5MHz + SU of 10MHz) / 2.

[0202] In this embodiment of the application, the definition of the first channel bandwidth may include one of definition one and definition two.

[0203] The descriptions of Definition 1 and Definition 2 are the same as those in Case 1, and will not be repeated here.

[0204] In some embodiments, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information;

[0205] The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on the first channel bandwidth and a second spectral efficiency, the second spectral efficiency being related to the third information;

[0206] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0207] The network device determines a second spectrum utilization rate based on a first channel bandwidth and third information, and determines a first maximum configurable channel bandwidth based on the first channel bandwidth and the second spectrum utilization rate.

[0208] Here, the first maximum configurable channel bandwidth includes an integer multiple of RBs. The number of RBs included in the first maximum configurable channel bandwidth, i.e. the fourth number, can be determined based on the first channel bandwidth and the second spectrum utilization rate, with the RB values ​​included in the bandwidth rounded up.

[0209] Fourth quantity N RB,c It can be expressed as equation (6): N RB,c =floor((X*1000*SU / RB,1) Formula (6);

[0210] Network devices determine the first maximum configurable channel bandwidth N based on a fourth quantity. RB,c *RB.

[0211] In determining the fourth quantity N RB,c In this case, the total bandwidth of the two first protection bandwidths can be expressed as XN RB,c *RB-SCS, understandably, the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier.

[0212] The spectral width GB of a first protection bandwidth can be expressed as Equation (4).

[0213] In this embodiment of the application, when the definition of the first channel bandwidth is defined as in Definition 2, the first channel bandwidth is an integer multiple of RB, and the first maximum configurable channel bandwidth is an integer multiple of RB. Therefore, the first guard band may also include a fifth number of RBs, wherein the fifth number is obtained by subtracting the fourth number from the number of RBs included in the first channel bandwidth, i.e., the sixth number.

[0214] In some embodiments, the second spectral utilization is related to the third information, including:

[0215] The second spectral efficiency is determined based on one or more of the following:

[0216] The first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth range;

[0217] The first spectral efficiency corresponding to the end bandwidth of the first channel bandwidth interval;

[0218] Wherein, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the third information.

[0219] The network device determines the channel bandwidth interval containing the first channel bandwidth among one or more channel bandwidth intervals included in the third information as the first channel bandwidth interval, and determines the first spectrum utilization rate corresponding to the starting bandwidth (interval start point) and / or ending bandwidth (interval end point) of the first channel bandwidth interval, and determines the second spectrum utilization rate based on the first spectrum utilization rate corresponding to the starting bandwidth (interval start point) and / or ending bandwidth (interval end point) of the first channel bandwidth interval.

[0220] In one example, X is 7MHz and SCS is 15KHz. Based on Tables 8 and 9, the first channel bandwidth X is within the channel bandwidth range of 5-10MHz, so the second spectrum utilization rate is SU: 90.00% for 5MHz.

[0221] In one example, X is 7MHz and SCS is 15KHz. Based on Table 8 and Table 9, the first channel bandwidth X is within the channel bandwidth range of 5-10MHz. Therefore, the second spectral utilization rate is SU: 93.60% for 10MHz.

[0222] In one example, X is 7MHz and SCS is 15KHz. Based on Tables 8 and 9, the first channel bandwidth X is within the channel bandwidth range of 5-10MHz. The average of the second spectrum utilization rate is 91.80%, which is SU: 90.00% for 5MHz and SU: 93.60% for 10MHz.

[0223] In one example, the network's X is an integer multiple of the first bandwidth, 12.5MHz, and SCS = 15kHz. According to Table 8, X is located within the 10-15MHz channel bandwidth range, so SU = 93.6%. Therefore, the maximum configurable channel bandwidth RB number N is... RB,c=floor((12.5*1000*0.936 / (12*15),1)=65, correspondingly, the guard bandwidth GB of the 12.5MHz flexible channel bandwidth is (12.5*1000-65*12*15-15) / 2=392.5kHz.

[0224] In one example, the network's X is an integer multiple of RB, 12.42MHz, and SCS = 15kHz. According to Table 8, X is located within the 10-15MHz channel bandwidth range, so SU = 93.6%. Therefore, the maximum configurable channel bandwidth RB number N is... RB,c =floor((12.42*1000*0.936 / (12*15),1)=64, correspondingly, the guard bandwidth GB of the 12.42MHz flexible channel bandwidth is (12.42*1000-64*12*15-15) / 2=442.5kHz, where the guard bandwidth of the 12.42MHz flexible channel bandwidth includes 69-64=5 RBs, so GB can also be (5*12*15-15) / 2=442.5kHz.

[0225] This application provides a wireless communication method applied to a terminal device, as shown in Figure 11, including:

[0226] S1101. The terminal device determines the first channel bandwidth and the first guard band corresponding to the fourth quantity, wherein the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth, and the first channel bandwidth and the first guard band are related to the first information.

[0227] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0228] The wireless communication method shown in Figure 11 will now be described.

[0229] The first maximum configurable channel bandwidth can be understood as the maximum configurable channel bandwidth on a single carrier. In Figure 11, the first channel bandwidth can be understood as the channel bandwidth on the carrier on the terminal side where the first maximum configurable bandwidth is located. The maximum configurable channel bandwidth can also be called the useful channel bandwidth. The first guard band can be understood as the smallest guard band in the first channel bandwidth. The first channel bandwidth may include two first guard bands, located on either side of the first maximum configurable channel bandwidth.

[0230] Here, the first channel bandwidth is the channel bandwidth that can support flexible configuration of the maximum configurable channel bandwidth, and the first channel bandwidth can be called the flexible channel bandwidth.

[0231] The terminal device determines the first channel bandwidth and the first guard band corresponding to the first maximum configurable channel bandwidth based on the first information. The first channel bandwidth can be identified as X.

[0232] In the case of multiple carriers, the network device can determine a corresponding first channel bandwidth and a first guard band for each carrier based on the first maximum configurable channel bandwidth of each carrier. The first maximum configurable channel bandwidths of different carriers may be the same or different.

[0233] The first piece of information can be understood as a predefined mapping relationship between the channel bandwidth grid and the maximum configured channel bandwidth. This first piece of information can appear in a table or list format.

[0234] The first information includes one or more first relationships, which indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth. Here, the second channel bandwidth can be understood as a predefined channel bandwidth grid, and the second maximum configurable channel bandwidth can be understood as the maximum configurable channel bandwidth within the second channel bandwidth.

[0235] In this embodiment of the application, the second channel bandwidth in the first information can be a bandwidth defined in NR, including 3MHz and integer multiples of 5MHz such as 5MHz, 10MHz, etc., or it can be a custom bandwidth.

[0236] In one example, taking the second channel bandwidth in the first information as an example that can be a bandwidth defined in NR including 3MHz and integer multiples of 5MHz such as 5MHz, 10MHz, etc., the first information includes: the first relationship between 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz and the corresponding maximum configurable channel bandwidth.

[0237] In this embodiment of the application, the first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number can be identified as N. RB,c .

[0238] In this embodiment, the network device may not directly configure the first maximum configurable channel bandwidth and / or the first channel bandwidth to the terminal device, but instead configure a fourth quantity to the terminal device. The terminal device determines the first maximum configurable channel bandwidth, the first channel bandwidth on the terminal side, and the first guard band based on the fourth quantity. It is understood that the first channel bandwidth on the terminal side and the first channel bandwidth on the network side may be the same or different. In one example, the first channel bandwidth on the terminal side is less than or equal to the first channel bandwidth on the network side.

[0239] In this embodiment, the terminal device determines the first channel bandwidth and the first guard band corresponding to the first maximum configurable channel bandwidth based on the first information of the relationship between the predefined indication channel bandwidth and the maximum configurable channel bandwidth. The first maximum configurable channel bandwidth can be any channel bandwidth. Thus, flexible bandwidth configuration is achieved based on the mapping relationship between the defined second channel bandwidth and the second maximum configurable channel bandwidth, so that the first maximum configurable channel bandwidth in the first channel bandwidth is not limited by the discrete maximum configurable channel bandwidth, avoiding the waste of spectrum resources caused by the definition of discrete channel bandwidth.

[0240] In some embodiments, the first relationship is used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under SCS.

[0241] In this embodiment of the application, for a second channel bandwidth, the first information may include one or more first relationships. When the first information includes multiple first relationships, different first relationships indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under different SCS conditions. SCS may include: 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, etc.

[0242] In one example, the first information includes: the first relationship between the channel bandwidths of 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz at 15kHz, 30kHz, and 60kHz and the corresponding maximum configurable channel bandwidth.

[0243] At this time, the terminal device determines the first maximum configurable channel bandwidth and the first guard band in the first channel bandwidth based on the first information and the current SCS.

[0244] In this embodiment of the application, an RB includes multiple SCSs. When the SCSs are different, the size of the RB is different, and the number of RBs included in the same channel bandwidth is different.

[0245] In one example, an RB consists of 12 SCSs.

[0246] In this embodiment of the application, the first information includes a first relationship used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under the corresponding SCS, thereby adapting to the scenario requirements of different SCSs.

[0247] In this embodiment of the application, the first relationship may include, but is not limited to, one of the following:

[0248] Case 1: The primary relationship is related to the number of RBs;

[0249] Case 2: The first relationship is related to spectrum utilization.

[0250] In Case 1, the first relationship is the relationship between the second channel bandwidth and the number of RBs. The number of RBs reflects the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0251] In Case 2, the first relationship is the relationship between the second channel bandwidth and the first spectrum utilization rate. The first spectrum utilization rate reflects the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0252] The following explanation addresses scenario one.

[0253] In some embodiments, the first relationship is the relationship between the second channel bandwidth and the first, second, and third quantities; wherein...

[0254] The first quantity is the maximum number of RBs included in the second channel bandwidth;

[0255] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0256] The third quantity is the number of RBs included in the second guard band of the second channel bandwidth.

[0257] The first quantity can be understood as the maximum number of RBs that can be accommodated. The first quantity can be denoted as N. RB,t .

[0258] The first quantity is applied within the second channel bandwidth, where rounding down can be used. In this case, for the second channel bandwidth CBW, the unit is MHz, the first quantity can be expressed as Equation (1).

[0259] The second quantity is the number of useful RBs in the second channel bandwidth, which can be identified as N. RB,c This refers to the number of RBs included in the second maximum configurable channel bandwidth. It is understood that the first information includes one or more second numbers.

[0260] The third quantity can be understood as the number of protection RBs, which can be understood as the RBs included in the second protection band of the second channel bandwidth. The third quantity can be represented by Y, where Y = N. RB,t -N RB,c .

[0261] Understandably, the second channel bandwidth includes two second guard bands, and the third quantity is the sum of the number of RBs included in the two second guard bands.

[0262] In one example, the first information includes the first relationship as shown in Table 6.

[0263] In some embodiments, the fourth quantity is one of one or more second quantities included in the first information;

[0264] The first channel bandwidth includes a sixth number of RBs, where the sixth number is the first number corresponding to the second number in the first information;

[0265] The first protective strip includes a fifth number of RBs, the fifth number being the third number corresponding to the second number in the first information.

[0266] The fourth quantity is one of one or more second quantities included in the first information. This can be understood as the fourth quantity being one of one or more second quantities corresponding to the current SCS in the first information. In this case, the first channel bandwidth can be considered to be located on the channel bandwidth grid in the predefined mapping relationship. It is understood that the current SCS can be predefined or configured by the network device.

[0267] At this point, the terminal device determines the first relationship corresponding to the fourth quantity in the first information, determines the first channel bandwidth based on the first quantity in the first relationship, and determines the first guard band based on the third quantity in the first relationship. It can be understood that the first quantity in the first relationship corresponding to the first maximum configurable channel bandwidth is the number of RBs included in the first channel bandwidth, i.e., the sixth quantity, and the third quantity in the first relationship is the number of RBs included in the first guard band, i.e., the fifth quantity.

[0268] Here, the third number is the size of the RBs included in the two first guard bands, therefore, the size of one first guard band is half the spectral width of the third number of RBs.

[0269] In some embodiments, the first information is used to determine the second information, the second information including one or more second relationships, the second relationship being the relationship between the channel bandwidth interval corresponding to the second channel bandwidth and the third quantity, and the third quantity corresponding to different channel bandwidth intervals is different.

[0270] Here, the second information determined by the first information can be found in the description of the first information determining the second information in the wireless communication method shown in Figure 8, and will not be repeated here.

[0271] In this embodiment of the application, the definition of the first channel bandwidth may include one of definition one and definition two:

[0272] The definition of the first channel bandwidth is based on the scenario in Definition 1.

[0273] The first channel bandwidth is defined as follows: under Definition 1, the first channel bandwidth uses the same unit as the second channel bandwidth: MHz. The step size between two adjacent first channel bandwidths is the first bandwidth, which can be identified as z. The unit of the first bandwidth can be MHz or kHz.

[0274] In some embodiments, the first bandwidth is an integer multiple of 100kHz. For example, 100kHz, 200kHz, etc.

[0275] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0276] The first channel bandwidth is determined based on a sixth quantity and the first bandwidth, wherein the sixth quantity is the maximum number of RBs included in the first channel bandwidth, the sixth quantity is determined based on the fourth quantity and the fifth quantity, and the fifth quantity is related to the second information;

[0277] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0278] The fourth quantity is not one of the one or more second quantities corresponding to the current SCS in the first information. This can be understood as the fourth quantity not being one of the one or more second quantities corresponding to the current SCS in the first information. In this case, it can be considered that the first channel bandwidth does not fall on the channel bandwidth grid in the predefined mapping relationship. It is understood that the current SCS can be predefined or configured by the network device.

[0279] The terminal device can determine the number of RBs included in the first protection band (i.e., the fifth number) based on the second information, and then determine the sixth number based on the fifth and fourth numbers. The sixth number is the number of RBs included in the first channel bandwidth, and is the sum of the fourth and fifth numbers. The sixth number can be identified as N. RB,t .

[0280] In this embodiment of the application, since the first channel bandwidth may not be an integer multiple of RB, the first channel bandwidth X>=N RB,t *RB.

[0281] To further determine the value of the first channel bandwidth X more accurately, the value of N can be determined based on the first bandwidth. RB,t *Rounding up RB, the bandwidth X of the first channel can be expressed as equation (7): X=ceiling((N RB,c +Y)*RB*1000 / z,1)*z / 1000 Equation (7).

[0282] The terminal device determines the first channel bandwidth, as shown in Figure 9. The total spectral width of the two first guard bands is obtained by subtracting the first maximum configurable channel bandwidth from the first channel bandwidth. The bandwidth excluding the first maximum configurable channel bandwidth in the first channel bandwidth is the total bandwidth of the two first guard bands, which can be expressed as XN. RB,c*RB-SCS, understandably, the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier. The spectral width of the center subcarrier may include, but is not limited to, one SCS. If the spectral width of the center subcarrier is changed to other values, the SCS here will be changed accordingly.

[0283] The spectral width GB of a first protection bandwidth can be expressed as Equation (4).

[0284] Based on Figure 9, when the first channel bandwidth is an integer multiple of the first bandwidth, it may not be an integer multiple of RB. In this case, in addition to the sixth number of RBs, the first channel bandwidth also includes the remaining bandwidth smaller than RB. Therefore, the size of the first protection band can be accurately determined by subtracting the first maximum configurable channel bandwidth from the first channel bandwidth.

[0285] Understandably, the first and sixth quantities are used to represent the maximum number of RBs that can be accommodated by different channel bandwidths, and therefore, both are denoted as N. RB,t Similarly, the second and fourth quantities are used to represent the number of RBs that can be accommodated by different maximum configurable channel bandwidths, and are both identified as N. RB,c The third and fifth quantities are both used to represent the number of protection RBs that can be accommodated in different channel bandwidths, and can both be identified as Y.

[0286] The definition of the bandwidth of the first channel is given in the scenario of Definition 2.

[0287] The definition of the first channel bandwidth, under Definition 2, is that the first channel bandwidth is an integer multiple of RB, and the step size between two adjacent first channel bandwidths is RB.

[0288] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0289] The first channel bandwidth includes a sixth number of RBs, the sixth number being the maximum number of RBs included in the first channel bandwidth, the sixth number being determined based on the fourth number and the fifth number, and the fifth number being related to the second information;

[0290] The first protective strip includes the fifth number of RBs.

[0291] The terminal device can determine the number of RBs included in the first protection band (i.e., the fifth number) based on the second information, and then determine the sixth number based on the fifth and fourth numbers. The sixth number is the number of RBs included in the first channel bandwidth, and is the sum of the fourth and fifth numbers. The sixth number can be identified as N. RB,t The terminal device determines the first channel bandwidth X based on equation (7).

[0292] Given the fifth quantity Y, the fourth quantity N RB,c =N RB,t -Y.

[0293] As shown in Figure 10, when the first channel bandwidth is an integer multiple of RB, the first channel bandwidth includes a sixth number of RBs, wherein the first maximum configurable bandwidth includes a fourth number of RBs, and the first guard band includes a fifth number of RBs.

[0294] In determining the fourth quantity N RB,c In the case of Y*RB-SCS, the total bandwidth of the two first protection bandwidths can be expressed as Y*RB-SCS. It can be understood that the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier. The spectral width GB of a first protection bandwidth can be expressed as Equation (5).

[0295] In some embodiments, the fifth quantity is related to the second information and includes:

[0296] The fifth quantity is the third quantity corresponding to the third channel bandwidth. The third channel bandwidth is the second channel bandwidth corresponding to the first channel bandwidth interval. The first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the second information. The first channel bandwidth interval is determined based on the fourth quantity.

[0297] The terminal device determines two second quantities adjacent to the fourth quantity in the third information, and determines the first channel bandwidth interval based on the second channel bandwidth corresponding to the two second quantities respectively.

[0298] In one example, the fourth quantity is 35, SCS = 15kHz. According to Tables 6 and 7, the two second quantities adjacent to the fourth quantity are 25 and 52, respectively. The second channel bandwidths corresponding to 25 and 52 are 5MHz and 10MHz, respectively. Therefore, the first channel bandwidth range is 5-10MHz, that is, X is located in the 5-10MHz channel bandwidth range. The fifth quantity is the third quantity corresponding to 10MHz: 3.

[0299] In one example, the first channel bandwidth on the network side is 7MHz, and the network configures the maximum configurable channel bandwidth N for the terminal. RB,c =35, SCS=15kHz, according to Table 7, X is located within the channel bandwidth range of 5-10MHz, therefore Y=3. Assuming z=50kHz, therefore, the maximum number of RBs that can be accommodated is N. RB,t=38, X = ceiling(38*12*15 / 50,1)*50 / 1000 = 6.85MHz, guard bandwidth GB = (6.85*1000-35*12*15-15) / 2 = 267.5kHz. Ultimately, the terminal device determines X = 6.85MHz, which is less than the network's channel bandwidth of 7MHz, satisfying the configuration requirements. Assuming z = 100kHz, therefore, the maximum number of RBs that can be accommodated is N. RB,t =38, X = ceiling(38*12*15 / 100,1)*100 / 1000 = 6.9MHz, correspondingly, the guard bandwidth GB = (6.9*1000-35*12*15-15) / 2 = 292.5kHz, and the final flexible channel bandwidth X = 6.9MHz determined by the terminal is less than the network's channel bandwidth of 7MHz, which meets the configuration requirements. In one example, the network configures the maximum configurable channel bandwidth N for the terminal as the number of RBs. RB,c =35, SCS=15kHz. According to Tables 6 and 7, the flexible channel bandwidth X is located within the channel bandwidth range of 5-10MHz. Therefore, Y=3, and thus the maximum number of RBs that can be accommodated is N. RB,t =38, X = 38*12*15 / 1000 = 6.84MHz, guard bandwidth GB = (3*12*15-15) / 2 = 262.5kHz. The final flexible channel bandwidth determined by the terminal is X = 6.84MHz, which is consistent with the network's channel bandwidth of 6.84MHz.

[0300] The following explanation addresses scenario two.

[0301] In some embodiments, the first relationship is the relationship between the second channel bandwidth and the second quantity and the first spectral utilization; wherein...

[0302] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0303] The first spectrum utilization rate is the spectrum utilization rate of the second maximum configurable channel bandwidth occupied by the second channel bandwidth.

[0304] The second quantity is the number of useful RBs in the second channel bandwidth, which can be identified as N. RB,c That is, the number of RBs included in the second maximum configurable channel bandwidth.

[0305] The spectrum utilization rate SU is defined as: configurable channel bandwidth / channel bandwidth = N RB,c *RB / CBW.

[0306] The first spectrum utilization rate can be understood as the maximum spectrum utilization rate of the configurable channel bandwidth in the second channel bandwidth.

[0307] In one example, the first information includes the first relationship as shown in Table 8.

[0308] In some embodiments, the fourth quantity is one of one or more second quantities included in the first information;

[0309] The first channel bandwidth is determined based on the first maximum configurable channel bandwidth and the first spectrum utilization rate corresponding to the fourth quantity;

[0310] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0311] The fourth quantity is one of one or more second quantities included in the first information, which can be understood as the first channel bandwidth being located on the channel bandwidth grid in a predefined mapping relationship. At this time, the terminal device determines the first relationship corresponding to the first channel bandwidth in the first information, determines the first channel bandwidth based on the first spectrum utilization rate and the first maximum configurable channel bandwidth in the first relationship, and determines the bandwidth other than the first maximum configurable channel bandwidth in the first channel bandwidth as the first guard band.

[0312] Here, the bandwidth in the first channel bandwidth excluding the first maximum configurable channel bandwidth includes the size of the RB. Therefore, the size of a first guard band is half of the bandwidth in the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0313] In some embodiments, the first information is used to determine third information, the third information including one or more channel bandwidth intervals, wherein the starting bandwidth and channel bandwidth of the channel bandwidth interval are two adjacent second channel bandwidths.

[0314] The starting and ending bandwidths of the channel bandwidth interval are the bandwidths of two adjacent second channels.

[0315] In one example, the first information shown in Table 8 can determine the third information shown in Table 9.

[0316] In this embodiment of the application, for a channel bandwidth range, the method for determining the corresponding spectrum utilization is including but not limited to one of the following: determination method one, determination method two, and determination method three. The descriptions of determination method one, determination method two, and determination method three can be found in the wireless communication method shown in Figure 8, and will not be repeated here.

[0317] In this embodiment of the application, the definition of the first channel bandwidth may include one of definition one and definition two:

[0318] The definition of the first channel bandwidth is based on the scenario in Definition 1.

[0319] In some embodiments, the fourth quantity is not any one of the plurality of second quantities included in the first information;

[0320] The first channel bandwidth is determined based on the fourth quantity, the second spectrum utilization rate, and the first bandwidth, wherein the second spectrum utilization rate is related to the third information;

[0321] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0322] The terminal device determines the second spectrum utilization rate based on the third information, and determines the first channel bandwidth based on the fourth quantity, the second spectrum utilization rate, and the first bandwidth.

[0323] The bandwidth of the first channel can be expressed as equation (8): X = celing((N RB,c *RB*1000 / SU / z),1)*z / 1000 Formula (8);

[0324] The terminal device subtracts the first maximum configurable channel bandwidth from the first channel bandwidth to obtain the total spectral width of the two first guard bands. The bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth is the total bandwidth of the two first guard bands, which can be expressed as XN. RB,c *RB-SCS, understandably, the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier.

[0325] The spectral width GB of a first protection bandwidth can be expressed as Equation (4).

[0326] The definition of the bandwidth of the first channel is given in the scenario of Definition 2.

[0327] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0328] The first channel bandwidth is determined based on the fourth quantity and the second spectrum utilization rate, the second spectrum utilization rate being related to the third information;

[0329] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0330] The terminal device determines the first maximum configurable channel bandwidth based on the fourth quantity and RB, and determines the second spectrum utilization based on the fourth quantity and third information, and then determines the first channel bandwidth based on the first maximum configurable channel bandwidth and the second spectrum utilization.

[0331] Here, the spectrum bandwidth calculated based on the first maximum configurable channel bandwidth and the second spectrum utilization rate may not be an integer multiple of RB, and the second spectrum utilization rate is the maximum spectrum utilization rate. Therefore, the calculation results of the first maximum configurable channel bandwidth and the second spectrum utilization rate can be rounded up.

[0332] The bandwidth of the first channel can be expressed as equation (9): X = ceiling((N RB,c / SU),1)*RB / 1000 Equation (9).

[0333] The terminal device subtracts the first maximum configurable channel bandwidth from the first channel bandwidth to obtain the total spectral width of the two first guard bands. The bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth is the total bandwidth of the two first guard bands, which can be expressed as XN. RB,c *RB-SCS, understandably, the SCS subtracted in this formula is the spectral width of the center subcarrier of the carrier.

[0334] The spectral width GB of a first protection bandwidth can be expressed as Equation (4).

[0335] In some embodiments, the second spectral utilization is related to the third information, including:

[0336] The second spectral efficiency is determined based on one or more of the following:

[0337] The first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth range;

[0338] The first spectral efficiency corresponding to the end bandwidth of the first channel bandwidth interval;

[0339] Wherein, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the third information, and the first channel bandwidth interval is determined based on the fourth quantity.

[0340] The terminal device determines two second quantities adjacent to the fourth quantity in the third information, and determines a first channel bandwidth interval based on the second channel bandwidth corresponding to each of the two second quantities. The terminal device determines a second spectrum utilization rate based on the first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth interval and / or the first spectrum utilization rate corresponding to the ending bandwidth of the first channel bandwidth interval.

[0341] In one example, the fourth quantity is 35, and SCS = 15kHz. According to Tables 6 and 7, the two second quantities adjacent to the fourth quantity are 25 and 52, respectively. The second channel bandwidths corresponding to 25 and 52 are 5MHz and 10MHz, respectively. Therefore, the first channel bandwidth range is 5-10MHz, that is, X is located in the 5-10MHz channel bandwidth range. The terminal device determines the second spectrum utilization rate based on the first spectrum utilization rate corresponding to 5MHz and / or the first spectrum utilization rate corresponding to 10MHz.

[0342] In one example, assume that the maximum spectral efficiency SU of X is taken down to the SU corresponding to the channel bandwidth grid at the start of the interval. The network configures the terminal with the number of RBs (Racks, RBs) of the maximum configurable channel bandwidth N. RB,c =65, SCS=15kHz. According to Table 8, X is located in the channel bandwidth range of 10-15MHz, so SU=93.6%. Assuming z=50kHz, X=ceiling(65*12*15 / 0.936 / 50,1)*50 / 1000=12.5MHz. Correspondingly, GB=(12.5*1000-65*12*15-15) / 2=392.5kHz.

[0343] In one example, the network configures the maximum configurable channel bandwidth N for the terminal. RB,c =64, SCS=15kHz. According to Table 8, X is located in the channel bandwidth range of 5-10MHz. Then SU=93.6%. Therefore, X=ceiling((64 / 0.936),1)*12*SCS / 1000=69*12*15 / 1000=12.42MHz. Guard bandwidth GB=(5*12*15-15) / 2=442.5kHz.

[0344] This application provides a wireless communication method as shown in FIG12, which is applied to a network device and includes:

[0345] S1201, The network device sends fourth information to the terminal device, the fourth information being used to indicate the fourth quantity corresponding to each carrier in one or more carriers.

[0346] This application provides a wireless communication method as shown in FIG13, which is applied to a terminal device and includes:

[0347] S1301. The terminal device receives fourth information sent by the network terminal device, the fourth information being used to indicate the fourth quantity corresponding to each carrier in one or more carriers.

[0348] The fourth quantity can be understood as the number of useful RBs on the channel bandwidth of a carrier, that is, the number N of RBs included in the maximum configurable channel bandwidth. RB,c .

[0349] Understandably, the fourth piece of information is used to indicate N. RB,c Size.

[0350] In this embodiment of the application, for a carrier, the fourth quantity corresponding to the carrier can be carried in the carrier parameters of the carrier.

[0351] The wireless communication method shown in Figure 12 can be implemented in combination with the wireless communication method shown in Figure 8. The wireless communication method shown in Figure 13 can be implemented in combination with the wireless communication method shown in Figure 11.

[0352] In this embodiment of the application, the network device can determine the fourth quantity corresponding to each carrier in one or more carriers based on the first channel bandwidth and the first information, and send the fourth quantity corresponding to each carrier in one or more carriers to the terminal device through the fourth information.

[0353] In this embodiment of the application, the terminal device receives a fourth quantity corresponding to each of one or more carriers. For each carrier, the first channel bandwidth and the first guard band can be determined by the fourth quantity corresponding to the carrier and the first information.

[0354] In this embodiment of the application, the fourth information is also used to indicate the starting position of one or more first maximum configurable channel bandwidths.

[0355] The starting position of the first maximum configurable channel bandwidth can be understood as N. RB，c Starting point. The fourth piece of information may include the absolute position of the starting point, or the relative offset of the starting point relative to a predefined position.

[0356] The starting position of the first maximum configurable channel bandwidth and the size of the first maximum configurable channel bandwidth are used to determine the position of the first maximum configurable channel bandwidth.

[0357] The fourth number of carriers and the starting position of the first maximum configurable channel bandwidth can be understood as a (N) RB,c Starting point + N RB,c (Size) is correct.

[0358] In some embodiments, the network device schedules the transmission of the terminal device on a single carrier; the fourth information is further used to indicate the starting position of the first maximum configurable channel bandwidth of the carrier.

[0359] If the network device schedules only on a single carrier, then the network device configures a (N) carrier for the terminal device. RB Starting point + N RB (Size) is correct.

[0360] In some embodiments, the network device schedules the transmission of the terminal device on multiple consecutive carriers;

[0361] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth for each of the plurality of carriers; or,

[0362] The fourth information is also used to indicate the starting position of the plurality of the first maximum configurable channel bandwidths of the plurality of carriers.

[0363] If the network device schedules on two or more consecutive carriers, the network device configures one (one NRB start point + two or more NRB sizes) pair for the terminal device, or configures two or more (NRB start point and NRB size) pairs.

[0364] When the network device configures a pair of (one NRB start point + two or more NRB sizes) for the terminal device, the starting position of the first maximum configurable channel bandwidth of the first carrier is determined, and the position of the first maximum configurable channel bandwidth of each carrier is continuously determined based on the size of the first maximum configurable channel bandwidth of each carrier.

[0365] In some embodiments, the network device schedules the transmission of the terminal device on multiple non-contiguous carriers;

[0366] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of each of the plurality of carriers.

[0367] If a network device schedules on two or more non-contiguous carriers, the network device configures two or more (NRB start point + NRB size) pairs for the terminal device.

[0368] Understandably, the aforementioned multiple carriers could also be multiple RB resource sets.

[0369] Understandably, the aforementioned multiple carriers can be combined to form a large virtual carrier.

[0370] In some embodiments, based on FIG12 and as shown in FIG14, the wireless communication method provided in this application embodiment further includes:

[0371] S1401. The network device receives fifth information from one or more frequency bands sent by the terminal device, wherein the fifth information is used to indicate the channel bandwidth supported by the corresponding frequency band.

[0372] In some embodiments, based on FIG13 and as shown in FIG15, the wireless communication method provided in this application embodiment further includes:

[0373] S1501. The terminal device sends fifth information for each of one or more frequency bands to the network device, wherein the fifth information is used to indicate the channel bandwidth supported by the corresponding frequency band.

[0374] The terminal device reports the channel bandwidth it supports to the network device, and the network device can determine the first channel bandwidth based on the channel bandwidth it supports reported by the terminal device.

[0375] In this embodiment of the application, the terminal device may send the fifth information to the network device after entering the connected state.

[0376] In some embodiments, the reporting methods of the terminal device include, but are not limited to, one of the following reporting methods:

[0377] Reporting Method 1: The fifth piece of information includes: the minimum and maximum channel bandwidth supported by the terminal device;

[0378] The terminal device supports the minimum channel bandwidth, the maximum channel bandwidth, and the channel bandwidth between the minimum channel bandwidth and the maximum channel bandwidth.

[0379] Reporting method two: Category 1 channel bandwidth and / or Category 2 channel bandwidth;

[0380] The first type of channel bandwidth includes one or more of the second channel bandwidths, and the second type of channel bandwidth includes one or more channel bandwidth intervals based on the second channel bandwidth;

[0381] The terminal device supports the first type of channel bandwidth and / or the second type of channel bandwidth.

[0382] For reporting method one, the minimum and maximum channel bandwidth supported by the terminal device in each frequency band can be defined separately. Other flexible channel bandwidths between the minimum and maximum channel bandwidths are supported by default by the terminal.

[0383] In some embodiments, the minimum channel bandwidth is one of one or more second channel bandwidths included in the first information, and the maximum channel bandwidth is one of one or more second channel bandwidths included in the first information.

[0384] Here, the minimum channel bandwidth and the maximum channel bandwidth are located on the channel bandwidth grid included in the first information.

[0385] In one example, taking the first relationship as shown in Table 6 as an example, the minimum channel bandwidth and the maximum channel bandwidth are located on the channel bandwidth grids that are integer multiples of 3MHz, 5MHz, and 5MHz.

[0386] For reporting method two, the first type of channel bandwidth can be understood as the channel bandwidth supported by the terminal device located on the channel bandwidth grid, and the second type of channel bandwidth can be understood as the channel bandwidth range supported by the terminal device based on the channel bandwidth grid.

[0387] In one example, the first type of channel bandwidth is defined as the supported channel bandwidths of 3MHz, 5MHz, and integer multiples of 5MHz.

[0388] In one example, the second type of channel bandwidth is defined as a channel bandwidth range defined by a grid of channel bandwidths that are integer multiples of 3MHz, 5MHz, and 5MHz, such as 3-5*N, 5*N-5*(N+i). For example, 5-20MHz means that the terminal supports all channel bandwidths that vary according to the first bandwidth or RB between the 5MHz and 20MHz channel bandwidths.

[0389] For Category I channel bandwidth, the terminal device can report the supported Category I channel bandwidth using a bitmap method.

[0390] For the second type of channel bandwidth, the terminal device can report the minimum and maximum channel bandwidth within the channel bandwidth range.

[0391] If a terminal device supports multiple channel bandwidth ranges, and these multiple channel bandwidth ranges are not consecutive, the terminal device can report multiple channel bandwidth ranges.

[0392] In some embodiments, the fifth information does not include the second type of channel bandwidth used to indicate that the terminal device does not support the channel bandwidth range based on the second type of channel bandwidth; or,

[0393] The fourth information does not include the second type of channel bandwidth used to indicate that the terminal device supports all channel bandwidth ranges based on the second type of channel bandwidth.

[0394] Understandably, if the second type of signaling or the second type of channel bandwidth is defaulted, it may mean that the terminal does not support flexible channel bandwidth within the channel bandwidth range, or it may mean that the terminal supports flexible channel bandwidth within all channel bandwidth ranges by default. This can be predefined or defined by negotiation between the network device and the terminal device.

[0395] In this embodiment of the application, the flexible channel bandwidth within all channel bandwidth intervals can be understood as the channel bandwidth interval determined based on all adjacent second channel bandwidths.

[0396] In some embodiments, the fifth information further includes: a second bandwidth supported by the terminal device, wherein the second bandwidth is the maximum total bandwidth of multiple carriers.

[0397] The second bandwidth can be understood as the maximum combined bandwidth of multiple carriers. These multiple carriers can be continuous or discontinuous.

[0398] In the case of multiple carriers in succession, the second bandwidth can be understood as the maximum combined bandwidth supported by the multi-FFT (FFT) per band per RF chain for the frequency band and RF link (corresponding to the maximum capability of multiple consecutive carriers).

[0399] In the case of multiple discontinuous carriers, the second bandwidth can be understood as the maximum combined bandwidth supported for the frequency band, RF link, and frequency span (Per band per RF chain multi-FFT) (corresponding to the maximum capability of discontinuous multi-carriers).

[0400] In this embodiment of the application, the frequency span can be understood as the range from the lowest frequency of the lowest frequency carrier among multiple discontinuous carriers to the highest frequency of the highest frequency carrier.

[0401] In some embodiments, the fifth information is further used to indicate a first bandwidth, wherein the first channel bandwidth is an integer multiple of the first bandwidth.

[0402] Here, the terminal device reports the first bandwidth to the network device, so that the network device determines that the first channel bandwidth is an integer multiple of the first bandwidth.

[0403] In some embodiments, based on the method shown in FIG12, the wireless communication method provided in this application further includes:

[0404] During the initial access phase, the network device configures the initial bandwidth portion (BWP) to the terminal device; or,

[0405] During the initial access phase, the network device configures a fourth channel bandwidth to the terminal device. The fourth channel bandwidth is the minimum channel bandwidth supported by one or more frequency bands, and the fourth channel bandwidth is used to determine the initial BWP.

[0406] In some embodiments, based on the method shown in FIG13, the wireless communication method provided in this application further includes:

[0407] The initial bandwidth portion (BWP) during the initial access phase can be determined using one of the following methods:

[0408] Network device configuration; or,

[0409] The fourth channel bandwidth is determined based on the network device configuration, whereby the fourth channel bandwidth is the minimum channel bandwidth supported by one or more frequency bands.

[0410] It is determined based on the predefined fifth channel bandwidth.

[0411] During the initial access phase, the network can configure resources for the terminal in one of the following ways:

[0412] Configuration Method 1: The network can configure only the initial BWP for the terminal without configuring the channel bandwidth.

[0413] Configuration Method 2: The network configures a minimum channel bandwidth that supports all frequency bands for the terminal, or a predefined channel bandwidth, and then configures the initial BWP within this channel bandwidth.

[0414] In this embodiment of the application, the network device does not need to configure or reduce the configuration of channel resources for the terminal device in the initial stage, thereby reducing the signaling overhead in the initial access stage.

[0415] The wireless communication method provided in this application will now be described through several embodiments.

[0416] This application relates to the following two aspects:

[0417] Firstly, predefined flexible channel bandwidth mapping relationships

[0418] A predefined mapping relationship between the maximum configurable channel bandwidth, channel bandwidth, and guard bandwidth is established for arbitrary channel bandwidth. This allows the terminal and network to use any predefined channel bandwidth. The terminal-side channel bandwidth and the network-side channel bandwidth can be the same or different, but in actual configuration, the terminal-side channel bandwidth is less than or equal to the network-side channel bandwidth. This arbitrary channel bandwidth is called flexible channel bandwidth. The mapping relationship between the maximum configurable channel bandwidth, flexible channel bandwidth, and guard bandwidth can be defined using the following method:

[0419] Method 1: Maximum Useful RB Number

[0420] Define channel bandwidths CBW of 3MHz, 5MHz, and integer multiples of 5MHz as channel bandwidth grids. First, determine the maximum number of RBs N that each channel bandwidth grid can accommodate. RB,t and its maximum configurable channel bandwidth RB number N RB,c N RB,c The definition of NR can be used or a new definition can be created, as shown in Table 6 below (the definition of NR is used here) to determine the protection RB number Y value, where the maximum number of RBs that can be accommodated is N. RB,t =floor(CBW*1000 / (12*SCS), 1), maximum number of RBs N that can be accommodated. RB,t It should be located within the channel bandwidth CBW, so rounding down is used here. Here, 12*SCS is the spectral width of one RB, in kHz; CBW is 3 or 5*N MHz, representing the channel bandwidth grid; N is a positive integer; SCS = 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, etc.; Y = N RB,t -N RB,c .

[0421] The maximum channel bandwidth of 100MHz here is just an example; in actual applications, any N*5MHz can be used.

[0422] Based on the obtained Y value and the corresponding SCS, the channel bandwidth is divided into intervals as shown in Table 7. The channel bandwidth intervals for different SCSs can be the same or different.

[0423] In this application embodiment, the definition of flexible channel bandwidth X includes the following definition one and definition two.

[0424] Definition 1: The flexible channel bandwidth X uses the same spectrum resource unit MHz as the channel bandwidth grid, with a variation step size of zHz.

[0425] Network side:

[0426] If the network's channel bandwidth X is located on a channel bandwidth grid, then the corresponding maximum configurable channel bandwidth number N is determined according to the predefined table 7. RB,c and protection bandwidth (GB).

[0427] If the network's channel bandwidth X is a flexible channel bandwidth within the channel bandwidth range, the network determines the channel bandwidth range to which X belongs based on its flexible channel bandwidth X and SCS, and then determines the corresponding Y value through N. RB,t =floor(X*1000 / (12*SCS), 1) determines the maximum number of RBs that can be accommodated, and then determines the maximum number of RBs N with configurable channel bandwidth. RB,c , where N RB,c =N RB,t -Y = floor(X*1000 / (12*SCS), 1) - Y. Correspondingly, the minimum protection band is X minus the maximum configurable channel bandwidth and the center subcarrier, where the center subcarrier is one subcarrier. That is, the minimum protection bandwidth GB = (X*1000 - N) RB,c *12*SCS-SCS) / 2kHz.

[0428] The network does not notify the terminal of its operating channel bandwidth; the network only configures the terminal with the maximum configurable channel bandwidth number N (RBs). RB,c .

[0429] Example: If the network has a flexible channel bandwidth X = 7MHz and SCS = 15kHz, then the maximum number of RBs it can accommodate is N. RB,t =floor(7*1000 / (12*15), 1) = 38. Since 7MHz is in the 5-10MHz channel bandwidth range, Y = 3. The maximum configurable channel bandwidth is N. RB,c=35, correspondingly, the guard bandwidth GB for the 7MHz flexible channel bandwidth = (7*1000-N) RB,c (*12*15-15) / 2=342.5kHz.

[0430] Terminal side

[0431] If the network configures the maximum configurable channel bandwidth N for the terminal RB,c The maximum configurable channel bandwidth N for the channel bandwidth grid in the predefined table 7. RB,c Then the terminal determines its channel bandwidth and protection bandwidth GB according to the predefined table 7.

[0432] If the network configures the maximum configurable channel bandwidth N for the terminal RB,c If not in the predefined table 7, the terminal can be configured according to N. RB,c The SCS determines the channel bandwidth range to which the network is configured, and then determines the corresponding Y value based on N. RB,t =N RB,c +Y determines the maximum number of RBs N that the channel bandwidth can accommodate. RB,t Since the spectrum owned by the operator may not be an integer multiple of RB, the channel bandwidth X configured by the network for the terminal is greater than or equal to N. RB,t To further determine the value of X more accurately, N can be adjusted according to the flexible channel bandwidth variation step. RB,t *12*SCS rounded up, i.e., X = ceiling((N RB,c The formula is: +Y)*12*SCS*1000 / z, 1)*z / 1000, to determine the specific value of the channel bandwidth X MHz configured for the terminal by the network. Correspondingly, the minimum protection bandwidth GB = (X*1000-N) RB,c *12*SCS-SCS) / 2kHz.

[0433] Example: The number N of RBs (Redundant Blocks) that the network configures for the maximum configurable channel bandwidth of the terminal. RB,c =35, SCS=15kHz. According to Table 7, the flexible channel bandwidth X is located in the channel bandwidth range of 5-10MHz, so Y=3. Assuming z=50kHz, the maximum number of RBs that can be accommodated is N. RB,t =38, X = ceiling(38*12*15 / 50,1)*50 / 1000 = 6.85MHz, guard bandwidth GB = (6.85*1000-35*12*15-15) / 2 = 267.5kHz. The final flexible channel bandwidth determined by the terminal, X = 6.85MHz, is less than the network's channel bandwidth of 7MHz, which meets the configuration requirements. Assuming z = 100kHz, therefore the maximum number of RBs that can be accommodated is N. RB,t=38, X = ceiling(38*12*15 / 100,1)*100 / 1000 = 6.9MHz, correspondingly, the protection bandwidth GB = (6.9*1000-35*12*15-15) / 2 = 292.5kHz, and the final flexible channel bandwidth X = 6.9MHz determined by the terminal is less than the network channel bandwidth of 7MHz, which meets the configuration requirements.

[0434] As can be seen from Table 5 of the background information, the fragmented spectrum currently owned by operators is an integer multiple of 100kHz, meaning that the step size z of the flexible channel bandwidth can be an integer multiple of 100kHz.

[0435] Definition 2: The flexible channel bandwidth is an integer number of RBs.

[0436] Network side:

[0437] If the network's channel bandwidth X is located on a channel bandwidth grid, then the corresponding maximum configurable channel bandwidth number N is determined according to the predefined table 6. RB,c and protection bandwidth GB.

[0438] If the network's channel bandwidth is a flexible channel bandwidth within the channel bandwidth range, the network determines the corresponding Y value based on its flexible channel bandwidth X and SCS to determine the channel bandwidth range to which X belongs. X is then the maximum number of RBs N that can be accommodated. RB,t Then the maximum number of RBs N for configurable channel bandwidth RB,c =N RB,t -Y, correspondingly, the minimum protection bandwidth GB = (Y*12*SCS-SCS) / 2kHz.

[0439] The network does not notify the terminal of its operating channel bandwidth; the network only configures the terminal with the maximum configurable channel bandwidth number N (RBs). RB,c .

[0440] Example: The network's flexible channel bandwidth X = 38 * 12 * SCS / 1000 = 6.84 MHz, SCS = 15 kHz. Since the 38 RBs are located in the 5-10 MHz channel bandwidth range, Y = 3. The maximum number of RBs with configurable channel bandwidth N is... RB,c =35, and correspondingly, the protection bandwidth of the flexible channel bandwidth GB = (3*12*15-15) / 2 = 262.5kHz.

[0441] Terminal side

[0442] If the network configures the maximum configurable channel bandwidth N for the terminal, then... RB,c The number N of RBs is the maximum configurable channel bandwidth for the channel bandwidth grid in the predefined table 6. RB,cThen the terminal determines its channel bandwidth and protection bandwidth GB according to the predefined table 6.

[0443] If the network configures the maximum configurable channel bandwidth N for the terminal RB,c If it is not in the predefined table, the terminal can be configured according to N. RB,c The SCS determines the channel bandwidth range to which the network's configured channel bandwidth belongs, and then determines the corresponding Y value. This allows us to determine the channel bandwidth X as (N... RB +Y)*12*SCS. Accordingly, the minimum protection bandwidth GB = (Y*12*SCS-SCS) / 2.

[0444] Example: The number N of RBs (Redundant Blocks) that the network configures for the maximum configurable channel bandwidth of the terminal. RB,c =35, SCS=15kHz. According to Table 7, the flexible channel bandwidth X is located in the channel bandwidth range of 5-10MHz. Therefore, Y=3, and thus the maximum number of RBs that can be accommodated is N. RB,t =38, X = 38*12*15 / 1000 = 6.84MHz, guard bandwidth GB = (3*12*15-15) / 2 = 262.5kHz. The final flexible channel bandwidth determined by the terminal is X = 6.84MHz, which is consistent with the network's channel bandwidth of 6.84MHz.

[0445] Method 2: Maximum Spectrum Utilization

[0446] Define channel bandwidths CBW of 3MHz, 5MHz, and integer multiples of 5MHz as channel bandwidth grids. First, determine the maximum configurable number of channel bandwidths RBN for each channel bandwidth grid. RB,c N RB,c The definition of NR can be used or a new definition can be made, as shown in Table 8 (the definition of NR is used here) to determine its maximum channel bandwidth spectral efficiency (SU). In this table, the spectral width of one RB is 12*SCS in kHz, CBW = 3 or 5*N MHz is the channel bandwidth grid, N is a positive integer, and SCS = 15kHz / 30kHz / 60kHz / 120kHz / 240kHz and other subcarrier spacings.

[0447] The SU definition of channel bandwidth is: Configurable channel bandwidth / Channel bandwidth = N RB,c *12*SCS / CBW.

[0448] Accordingly, the channel bandwidth range can be defined starting from the adjacent channel bandwidth of the defined channel bandwidth grid, as shown in Table 9.

[0449] The SU of the flexible channel bandwidth X located in each channel bandwidth range can be determined using the following method:

[0450] Method 1: The maximum spectral efficiency SU of the flexible channel bandwidth X is taken downwards from the SU corresponding to the channel bandwidth grid at the starting point of the interval. For example, if X is located in the 5-10MHz interval, the maximum spectral efficiency SU of the flexible channel bandwidth X is taken as the SU of the channel bandwidth grid of 5MHz.

[0451] Method 2: The maximum spectral efficiency SU of the flexible channel bandwidth X is taken as the SU corresponding to the channel bandwidth grid at the starting point of the interval. For example, if X is located in the 5-10MHz interval, the maximum spectral efficiency SU of the flexible channel bandwidth X is taken as the SU of the channel bandwidth grid of 10MHz.

[0452] Method 3: Alternatively, a separate SU can be defined for each channel interval. The definition method can be the average value of the SU corresponding to the channel bandwidth grid at the beginning and end of the channel bandwidth interval. For example, if X is located in the 5-10MHz interval, then the maximum spectral efficiency of the flexible channel bandwidth X is SU = (SU ​​for 5MHz + SU for 10MHz) / 2.

[0453] In this application embodiment, the definition of flexible channel bandwidth X includes the following definition one and definition two.

[0454] Definition 1: The flexible channel bandwidth X uses the same spectrum resource unit MHz as the channel bandwidth grid, with a variation step size of zHz.

[0455] Network side:

[0456] If the network's channel bandwidth is located on a channel bandwidth grid, then the corresponding maximum configurable channel bandwidth number N is determined according to a predefined table. RB,c and protection bandwidth GB.

[0457] If the network's channel bandwidth is a flexible channel bandwidth within the channel bandwidth range, the network determines the channel bandwidth range to which X belongs based on its own flexible channel bandwidth X and SCS, and then determines the corresponding SU based on N. RB,c =floor((X*1000*SU / (12*SCS),1) determines the maximum configurable channel bandwidth N of the network (RB). RB,c Accordingly, the minimum protection bandwidth GB = (X * 1000 - N) RB,c *12*SCS-SCS) / 2.

[0458] Example: Assume the maximum spectral efficiency SU of the flexible channel bandwidth X is taken downwards from the starting point of the interval corresponding to the SU of the channel bandwidth grid. The network's flexible channel bandwidth X = 12.5MHz, SCS = 15kHz. According to Tables 8 and 9, the flexible channel bandwidth X is located within the 10-15MHz channel bandwidth interval, so SU = 93.6%. Therefore, the maximum configurable channel bandwidth RB number N is...RB,c =floor((12.5*1000*0.936 / (12*15),1)=65, correspondingly, the guard bandwidth GB of the 12.5MHz flexible channel bandwidth is (12.5*1000-65*12*15-15) / 2=392.5kHz.

[0459] Terminal side

[0460] If the network configures the maximum configurable channel bandwidth N for the terminal, then... RB,c The number N of RBs for the maximum configurable channel bandwidth of the channel bandwidth grid in the predefined table. RB,c Then the terminal determines its channel bandwidth and protection bandwidth (GB) according to the predefined table.

[0461] If the network configures the maximum configurable channel bandwidth N for the terminal RB,c If it is not in the predefined table, the terminal can be configured according to N. RB,c The SCS determines the channel bandwidth range to which the network is configured, and then determines the corresponding SU according to X = ceiling((N RB,c The specific value of the flexible channel bandwidth X MHz configured for the terminal by the network is determined by *12*SCS*1000 / SU / z),1)*z / 1000. Correspondingly, the minimum protection bandwidth GB = (X*1000-N) RB,c *12*SCS-SCS) / 2.

[0462] Example: Assume that the maximum spectral efficiency SU of the flexible channel bandwidth X is taken downwards from the starting point of the interval, corresponding to the SU of the channel bandwidth grid.

[0463] The number N of the maximum configurable channel bandwidth that the network can configure for the terminal. RB,c =65, SCS=15kHz. According to Tables 8 and 9, the flexible channel bandwidth X is located in the channel bandwidth range of 10-15MHz. Then SU=93.6%. Assuming z=50kHz, X=ceiling(65*12*15 / 0.936 / 50,1)*50 / 1000=12.5MHz. Correspondingly, GB=(12.5*1000-65*12*15-15) / 2=392.5kHz.

[0464] Definition 2: The flexible channel bandwidth is an integer number of RBs.

[0465] Network side

[0466] If the network's channel bandwidth is located on a channel bandwidth grid, then the corresponding maximum configurable channel bandwidth number N is determined according to a predefined table. RB,c and protection bandwidth GB.

[0467] If the network's channel bandwidth is a flexible channel bandwidth within a certain bandwidth range, the network determines the corresponding SU (Supply Stream) based on its flexible channel bandwidth X and SCS (Self-Spanning Channel Bandwidth), where X / (12*SCS) is an integer, to determine the channel bandwidth range to which X belongs. Then, the maximum number of RBs (Resource Blocks) with configurable channel bandwidth, N, is determined. RB,c =ceiling(X*1000*SU / (12*SCS),1), correspondingly, minimum protection bandwidth GB = (X*1000-N) RB,c *12*SCS-SCS) / 2kHz.

[0468] Example: Assume that the maximum spectral efficiency SU of the flexible channel bandwidth X is taken downwards from the starting point of the interval, corresponding to the SU of the channel bandwidth grid.

[0469] The network's flexible channel bandwidth X = 69 * 12 * SCS / 1000 = 12.42 MHz, SCS = 15 kHz. According to Tables 8 and 9, the flexible channel bandwidth X falls within the 10-15 MHz channel bandwidth range. Therefore, SU = 93.6%, and the maximum configurable channel bandwidth RB number N is... RB,c =floor((12.42*1000*0.936 / (12*15),1)=64, correspondingly, the guard bandwidth GB of the 12.42MHz flexible channel bandwidth is (5*12*15-15) / 2=442.5kHz.

[0470] Terminal side

[0471] If the network configures the maximum configurable channel bandwidth N for the terminal, then... RB,c The number N of RBs for the maximum configurable channel bandwidth of the channel bandwidth grid in the predefined table. RB,c Then the terminal determines its channel bandwidth and protection bandwidth (GB) according to the predefined table.

[0472] If the network configures the maximum configurable channel bandwidth N for the terminal RB,c If it is not in the predefined table, the terminal can be configured according to N. RB,c The SCS determines the channel bandwidth range to which the network is configured, and then the corresponding SU is determined. Finally, the channel bandwidth X = ceiling((N) can be determined. RB,c / SU),1)*12*SCS / 1000, because SU is the maximum spectral efficiency of the channel bandwidth, rounding up is used here. Correspondingly, the minimum protection bandwidth GB = (X*1000-N) RB *12*SCS-SCS) / 2.

[0473] Example: The number N of RBs (Redundant Blocks) that the network configures for the maximum configurable channel bandwidth of the terminal. RB,c=64, SCS=15kHz. According to Table 8, the flexible channel bandwidth X is located in the channel bandwidth range of 5-10MHz. Then SU=93.6%. Therefore, X=ceiling((64 / 0.936),1)*12*SCS / 1000=69*12*15 / 1000=12.42MHz. The guard bandwidth GB=(5*12*15-15) / 2=442.5kHz.

[0474] Secondly, defining the channel bandwidth for each frequency band.

[0475] Based on the above definitions, and considering the different spectral widths of each frequency band (as shown in Table 4, n1 has a spectral width of 60MHz, n2 has a spectral width of 60MHz, n3 has 75MHz, and n25 has 25MHz), when the channel bandwidth is expanded to flexible channel bandwidth, the number of channel bandwidths that the terminal can potentially support is very large. If the bitmap method is still used to report the channel bandwidth supported by each frequency band, the signaling overhead will be very large, which is also impractical. Regarding the definition of flexible channel bandwidth:

[0476] During the initial access phase, the network can configure resources for the terminal in one of the following ways:

[0477] Method 1: The network can configure the initial BWP for the terminal without configuring the channel bandwidth.

[0478] Method 2: The network configures a minimum channel bandwidth that supports all frequency bands for the terminal, or a predefined channel bandwidth, and then configures the initial BWP within this channel bandwidth.

[0479] After entering the connected state, the terminal can use the following reporting methods:

[0480] Reporting Method 1

[0481] The terminal supports different channel bandwidths in different frequency bands. The minimum and maximum channel bandwidths supported by the terminal in each frequency band can be defined separately. The minimum and maximum channel bandwidths are located on channel bandwidth grids that are integer multiples of 3MHz, 5MHz, and 5MHz. Other flexible channel bandwidths between the minimum and maximum channel bandwidths are supported by default. The terminal has a maximum configurable channel bandwidth (RB) N configured through the network. RB,c According to the predefined method, the channel bandwidth configured in the network and the corresponding protection bandwidth can be calculated.

[0482] The terminal can report the following channel bandwidths respectively:

[0483] 1. Report the minimum and maximum channel bandwidth supported per carrier in each frequency band;

[0484] 2. For multi-carrier scenarios, different maximum capabilities can be reported based on different RF and baseband capabilities, such as:

[0485] The maximum combined bandwidth supported per band per RF chain multi-FFT (corresponding to the maximum capability of consecutive multi-carriers), and the combined bandwidth of other flexible channel bandwidths is supported by default;

[0486] The maximum combined bandwidth supported per band per RF chain per span (corresponding to the maximum capability of non-contiguous multi-carriers) is supported by default for other flexible channel bandwidths.

[0487] Based on the capabilities reported by the terminal, the network side configures one or more maximum configurable channel bandwidths (RBs, N) for the terminal. RB,c :

[0488] a) If the network schedules only on a single carrier, then the network configures a (N) carrier for the terminal. RB,c Starting point + N RB,c (Size) pair;

[0489] b) If the network schedules on two or more consecutive carriers, the network configures one (one N) for the terminal. RB Starting point + two or more N RB,c Size) pairs, or configure two or more (N) pairs. RB,c Starting point and N RB,c (Size) pair;

[0490] c) If the network schedules on two or more non-contiguous carriers, the network configures two or more (N) carriers for the terminal. RB,c Starting point + N RB,c (Size) is correct.

[0491] The terminal configures the maximum configurable channel bandwidth (RB) N through the network. RB,c Based on the predefined method, the bandwidth of each channel in the network configuration and the corresponding protection bandwidth can be calculated.

[0492] Reporting Method Two:

[0493] The channel bandwidth supported by the terminal in different frequency bands can be defined in two categories:

[0494] Category 1: Defines supported channel bandwidths of 3MHz, 5MHz, and integer multiples of 5MHz.

[0495] The second category defines flexible channel bandwidth ranges using 3MHz, 5MHz, and integer multiples of 5MHz as grids. These ranges are typically 3-5*N or 5*N-5*(N+i). For example, 5-20MHz represents the terminal supporting all step-variable flexible channel bandwidths between 5MHz and 20MHz. The network configures the corresponding flexible channel bandwidth for the terminal based on its reported capabilities. The maximum configurable channel bandwidth (RB) N that the terminal can configure through the network is [not specified in the original text]. RB,c According to the predefined method, the channel bandwidth configured in the network and the corresponding protection bandwidth can be calculated.

[0496] The terminal reports the supported channel bandwidth located on the channel bandwidth grid and the channel bandwidth range to which the supported flexible bandwidth belongs for each frequency band in the following manner:

[0497] 1. The supported Category 1 channel bandwidth is reported using a bitmap method via Category 1 signaling;

[0498] 2. Report the channel bandwidth range to which the supported flexible channel bandwidth belongs via Type II signaling:

[0499] a) The channel bandwidth range can be determined by reporting the minimum and maximum channel bandwidth located on the channel bandwidth grid.

[0500] b) If the supported channel bandwidth ranges are not contiguous, multiple channel bandwidth ranges can be reported:

[0501] If the second type of signaling is omitted, it may mean that the terminal does not support flexible channel bandwidth within the channel bandwidth range, or it may mean that the terminal supports flexible channel bandwidth within all channel bandwidth ranges by default. This can be negotiated and defined.

[0502] 2. For multi-carrier scenarios, different maximum capabilities can be reported based on different RF and baseband capabilities, such as:

[0503] The maximum combined bandwidth supported per band per RF chain multi-FFT (corresponding to the maximum capability of consecutive multi-carriers), and the combined bandwidth of other flexible channel bandwidths is supported by default;

[0504] The maximum combined bandwidth supported per band per RF chain per span (corresponding to the maximum capability of non-contiguous multi-carriers) is supported by default for other flexible channel bandwidths.

[0505] Based on the capabilities reported by the terminal, the network side configures one or more maximum configurable channel bandwidths (RBs, N) for the terminal. RB,c :

[0506] a) If the network schedules only on a single carrier, then the network configures a (N) carrier for the terminal. RB,c Starting point + N RB,c (Size) pair;

[0507] b) If the network schedules on two or more consecutive carriers, the network configures one (one N) for the terminal. RB,c Starting point + two or more N RB,c Size) pairs, or configure two or more (N) pairs. RB,c Starting point and N RB,c (Size) pair;

[0508] c) If the network schedules on two or more non-contiguous carriers, the network configures two or more (N) carriers for the terminal. RB,c Starting point + N RB,c (Size) is correct.

[0509] The terminal configures the maximum configurable channel bandwidth (RB) N through the network. RB,c According to the predefined method, the bandwidth of each channel in the network configuration and the corresponding protection bandwidth can be calculated.

[0510] 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.

[0511] 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.

[0512] Figure 16 is a schematic diagram of the structure of a network device provided in an embodiment of this application. As shown in Figure 16, the network device 1600 includes:

[0513] The first determining unit 1601 is configured to determine a first maximum configurable channel bandwidth and a first guard band in the first channel bandwidth, wherein the first maximum configurable channel bandwidth and the first guard band are related to the first information;

[0514] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0515] In some embodiments, the first relationship is used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under the subcarrier spacing SCS.

[0516] In some embodiments, the first relationship is the relationship between the second channel bandwidth and the first, second, and third quantities; wherein...

[0517] The first quantity is the maximum number of RBs included in the second channel bandwidth;

[0518] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0519] The third quantity is the number of RBs included in the second guard band of the second channel bandwidth.

[0520] In some embodiments, the first channel bandwidth is one of one or more second channel bandwidths included in the first information;

[0521] The first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number is the second number corresponding to the first channel bandwidth in the first information;

[0522] The first protection band includes a fifth number of RBs, the fifth number being the third number corresponding to the first channel bandwidth in the first information.

[0523] In some embodiments, the first information is used to determine the second information, the second information including one or more second relationships, the second relationship being the relationship between the channel bandwidth interval corresponding to the second channel bandwidth and the third quantity, and the third quantity corresponding to different channel bandwidth intervals is different.

[0524] In some embodiments, the first channel bandwidth is an integer multiple of the first bandwidth.

[0525] In some embodiments, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information;

[0526] The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on a fifth number and a sixth number, the sixth number being the maximum number of RBs included in the first channel bandwidth, and the fifth number being related to the second information;

[0527] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0528] In some embodiments, the first channel bandwidth is an integer multiple of RB.

[0529] In some embodiments, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information;

[0530] The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on a fifth number and a sixth number, the sixth number being the maximum number of RBs included in the first channel bandwidth, and the fifth number being related to the second information;

[0531] The first protective strip includes the fifth number of RBs.

[0532] In some embodiments, the fifth quantity is related to the second information and includes:

[0533] The fifth quantity is the third quantity corresponding to the third channel bandwidth, the third channel bandwidth is the second channel bandwidth corresponding to the first channel bandwidth, and the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the second information.

[0534] In some embodiments, the first relationship is the relationship between the second channel bandwidth and the second quantity and the first spectral utilization; wherein...

[0535] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0536] The first spectrum utilization rate is the spectrum utilization rate of the second maximum configurable channel bandwidth occupied by the second channel bandwidth.

[0537] In some embodiments, the first channel bandwidth is one of one or more second channel bandwidths included in the first information;

[0538] The first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number is the second number corresponding to the first channel bandwidth in the first information;

[0539] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0540] In some embodiments, the first information is used to determine third information, the third information including one or more channel bandwidth intervals, wherein the starting bandwidth and channel bandwidth of the channel bandwidth interval are two adjacent second channel bandwidths.

[0541] In some embodiments, the first channel bandwidth is an integer multiple of the first bandwidth or an integer multiple of RB.

[0542] In some embodiments, the first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information;

[0543] The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on the first channel bandwidth and a second spectral efficiency, the second spectral efficiency being related to the third information;

[0544] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0545] In some embodiments, the second spectral utilization is related to the third information, including:

[0546] The second spectral efficiency is determined based on one or more of the following:

[0547] The first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth range;

[0548] The first spectral efficiency corresponding to the end bandwidth of the first channel bandwidth interval;

[0549] Wherein, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the third information.

[0550] In some embodiments, the network device 1600 further includes:

[0551] The first communication unit is configured to send fourth information to the terminal device, the fourth information being used to indicate the fourth quantity corresponding to each carrier in one or more carriers.

[0552] In some embodiments, the network device schedules the transmission of the terminal device on a single carrier;

[0553] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of the carrier.

[0554] In some embodiments, the network device schedules the transmission of the terminal device on multiple consecutive carriers;

[0555] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth for each of the plurality of carriers; or,

[0556] The fourth information is also used to indicate the starting position of the plurality of the first maximum configurable channel bandwidths of the plurality of carriers.

[0557] In some embodiments, the network device schedules the transmission of the terminal device on multiple non-contiguous carriers;

[0558] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of each of the plurality of carriers.

[0559] In some embodiments, the first communication unit is further configured to receive fifth information from one or more frequency bands sent by the terminal device, the fifth information being used to indicate the channel bandwidth supported by the corresponding frequency band.

[0560] In some embodiments, the fifth information includes:

[0561] The terminal device supports the minimum and maximum channel bandwidth.

[0562] The terminal device supports the minimum channel bandwidth, the maximum channel bandwidth, and the channel bandwidth between the minimum channel bandwidth and the maximum channel bandwidth.

[0563] In some embodiments, the minimum channel bandwidth is one of a plurality of second channel bandwidths included in the first information, and the maximum channel bandwidth is one of a plurality of second channel bandwidths included in the first information.

[0564] In some embodiments, the fifth information includes:

[0565] Type I channel bandwidth and / or Type II channel bandwidth;

[0566] The first type of channel bandwidth includes one or more of the second channel bandwidths, and the second type of channel bandwidth includes one or more channel bandwidth intervals based on the second channel bandwidth;

[0567] The terminal device supports the first type of channel bandwidth and / or the second type of channel bandwidth.

[0568] In some embodiments, the fifth information does not include the second type of channel bandwidth used to indicate that the terminal device does not support a channel bandwidth range based on the second type of channel bandwidth; or,

[0569] The fourth information does not include the second type of channel bandwidth used to indicate that the terminal device supports all channel bandwidth ranges based on the second type of channel bandwidth.

[0570] In some embodiments, the fifth information further includes:

[0571] The terminal device supports a second bandwidth, which is the maximum total bandwidth of multiple carriers.

[0572] In some embodiments, the first communication unit is further configured as:

[0573] During the initial access phase, the initial bandwidth portion (BWP) is configured to the terminal device; or,

[0574] During the initial access phase, a fourth channel bandwidth is configured for the terminal device. The fourth channel bandwidth is the minimum channel bandwidth supported by multiple frequency bands, and the fourth channel bandwidth is used to determine the initial BWP.

[0575] The first communication unit in the network device can be implemented by a transceiver in the network device. The first determination unit in the network device can be implemented by a processor in the network device.

[0576] Figure 17 is a schematic diagram of the structural composition of the terminal device provided in an embodiment of this application. As shown in Figure 17, the terminal device 1700 includes:

[0577] The second determining unit 1701 is configured to determine the first channel bandwidth and the first guard band corresponding to the fourth quantity, wherein the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth, and the first channel bandwidth and the first guard band are related to the first information;

[0578] The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

[0579] In some embodiments, the first relationship is used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under the subcarrier spacing SCS.

[0580] In some embodiments, the first relationship is the relationship between the second channel bandwidth and the first, second, and third quantities; wherein...

[0581] The first quantity is the maximum number of RBs included in the second channel bandwidth;

[0582] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0583] The third quantity is the number of RBs included in the second guard band of the second channel bandwidth.

[0584] In some embodiments, the fourth quantity is one of one or more second quantities included in the first information;

[0585] The first channel bandwidth includes a sixth number of RBs, where the sixth number is the first number corresponding to the second number in the first information;

[0586] The first protective strip includes a fifth number of RBs, the fifth number being the third number corresponding to the second number in the first information.

[0587] In some embodiments, the first information is used to determine the second information, the second information including one or more second relationships, the second relationship being the relationship between the channel bandwidth interval corresponding to the second channel bandwidth and the third quantity, and the third quantity corresponding to different channel bandwidth intervals is different.

[0588] In some embodiments, the first channel bandwidth is an integer multiple of the first bandwidth.

[0589] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0590] The first channel bandwidth is determined based on a sixth quantity and the first bandwidth, wherein the sixth quantity is the maximum number of RBs included in the first channel bandwidth, the sixth quantity is determined based on the fourth quantity and the fifth quantity, and the fifth quantity is related to the second information;

[0591] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0592] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0593] The first channel bandwidth includes a sixth number of RBs, the sixth number being the maximum number of RBs included in the first channel bandwidth, the sixth number being determined based on the fourth number and the fifth number, and the fifth number being related to the second information;

[0594] The first protective strip includes the fifth number of RBs.

[0595] In some embodiments, the fifth quantity is related to the second information and includes:

[0596] The fifth quantity is the third quantity corresponding to the third channel bandwidth, the third channel bandwidth is the second channel bandwidth corresponding to the first channel bandwidth interval, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the second information, and the first channel bandwidth interval is determined based on the fourth quantity.

[0597] In some embodiments, the first relationship is the relationship between the second channel bandwidth and the second quantity and the first spectral utilization; wherein...

[0598] The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth;

[0599] The first spectrum utilization rate is the spectrum utilization rate of the second maximum configurable channel bandwidth occupied by the second channel bandwidth.

[0600] In some embodiments, the fourth quantity is one of one or more second quantities included in the first information;

[0601] The first channel bandwidth is determined based on the first maximum configurable channel bandwidth and the first spectrum utilization rate corresponding to the fourth quantity;

[0602] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0603] In some embodiments, the first information is used to determine third information, the third information including one or more channel bandwidth intervals, wherein the starting bandwidth and channel bandwidth of the channel bandwidth interval are two adjacent second channel bandwidths.

[0604] In some embodiments, the first channel bandwidth is an integer multiple of the first bandwidth.

[0605] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0606] The first channel bandwidth is determined based on the fourth quantity, the second spectrum utilization rate, and the first bandwidth, wherein the second spectrum utilization rate is related to the third information;

[0607] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0608] In some embodiments, the first channel bandwidth is an integer multiple of RB.

[0609] In some embodiments, the fourth quantity is not any one of the one or more second quantities included in the first information;

[0610] The first channel bandwidth is determined based on the fourth quantity and the second spectrum utilization rate, the second spectrum utilization rate being related to the third information;

[0611] The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

[0612] In some embodiments, the second spectral utilization is related to the third information, including:

[0613] The second spectral efficiency is determined based on one or more of the following:

[0614] The first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth range;

[0615] The first spectral efficiency corresponding to the end bandwidth of the first channel bandwidth interval;

[0616] Wherein, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the third information, and the first channel bandwidth interval is determined based on the fourth quantity.

[0617] In some embodiments, the terminal device 1700 further includes:

[0618] The second communication unit is configured to receive fourth information sent by a network device, the fourth information being used to indicate a fourth quantity corresponding to each carrier in one or more carriers.

[0619] In some embodiments, the network device schedules the transmission of the terminal device on a single carrier;

[0620] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of the carrier.

[0621] In some embodiments, the network device schedules the transmission of the terminal device on multiple consecutive carriers;

[0622] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth for each of the plurality of carriers; or,

[0623] The fourth information is also used to indicate the starting position of the plurality of the first maximum configurable channel bandwidths of the plurality of carriers.

[0624] In some embodiments, the network device schedules the transmission of the terminal device on multiple non-contiguous carriers;

[0625] The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of each of the plurality of carriers.

[0626] In some embodiments, the second communication unit is further configured to send fifth information of each of one or more frequency bands to the network device, the fifth information being used to indicate the channel bandwidth supported by the corresponding frequency band.

[0627] In some embodiments, the fifth information includes:

[0628] The terminal device supports the minimum and maximum channel bandwidth.

[0629] The terminal device supports the minimum channel bandwidth, the maximum channel bandwidth, and the channel bandwidth between the minimum channel bandwidth and the maximum channel bandwidth.

[0630] In some embodiments, the minimum channel bandwidth is one of a plurality of second channel bandwidths included in the first information, and the maximum channel bandwidth is one of a plurality of second channel bandwidths included in the first information.

[0631] In some embodiments, the fifth information includes:

[0632] Type I channel bandwidth and / or Type II channel bandwidth;

[0633] The first type of channel bandwidth includes one or more of the second channel bandwidths, and the second type of channel bandwidth includes one or more channel bandwidth intervals based on the second channel bandwidth;

[0634] The terminal device supports the first type of channel bandwidth and / or the second type of channel bandwidth.

[0635] In some embodiments, the fifth information does not include the second type of channel bandwidth used to indicate that the terminal device does not support a channel bandwidth range based on the second type of channel bandwidth; or,

[0636] The fourth information does not include the second type of channel bandwidth used to indicate that the terminal device supports all channel bandwidth ranges based on the second type of channel bandwidth.

[0637] In some embodiments, the fifth information further includes:

[0638] The terminal device supports a second bandwidth, which is the maximum total bandwidth of multiple carriers.

[0639] In some embodiments, the determination of the initial bandwidth portion (BWP) during the initial access phase includes one of the following methods:

[0640] Network device configuration; or,

[0641] The fourth channel bandwidth is determined based on the network device configuration, and the fourth channel bandwidth is the minimum channel bandwidth supported by multiple frequency bands.

[0642] It is determined based on the predefined fifth channel bandwidth.

[0643] The second communication unit in the terminal device can be implemented by the transceiver in the terminal device. The second determination unit in the terminal device can be implemented by the processor in the terminal device.

[0644] 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.

[0645] Figure 18 is a schematic structural diagram of a communication device 1800 provided in an embodiment of this application. This communication device can be a terminal device or a network device. The communication device 1800 shown in Figure 18 includes a processor 1810, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0646] Optionally, as shown in FIG18, the communication device 1800 may further include a memory 1820. The processor 1810 may retrieve and run computer programs from the memory 1820 to implement the methods described in the embodiments of this application.

[0647] The memory 1820 can be a separate device independent of the processor 1810, or it can be integrated into the processor 1810.

[0648] Optionally, as shown in FIG18, the communication device 1800 may further include a transceiver 1830, and the processor 1810 may control the transceiver 1830 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0649] The transceiver 1830 may include a transmitter and a receiver. The transceiver 1830 may further include an antenna, and the number of antennas may be one or more.

[0650] Optionally, the communication device 1800 may specifically be a network device in the embodiments of this application, and the communication device 1800 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.

[0651] Optionally, the communication device 1800 may specifically be a terminal device in the embodiments of this application, and the communication device 1800 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.

[0652] Figure 19 is a schematic structural diagram of a chip according to an embodiment of this application. The chip 1900 shown in Figure 19 includes a processor 1910, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0653] Optionally, as shown in FIG19, chip 1900 may further include memory 1920. Processor 1910 can call and run computer programs from memory 1920 to implement the methods in the embodiments of this application.

[0654] The memory 1920 can be a separate device independent of the processor 1910, or it can be integrated into the processor 1910.

[0655] Optionally, the chip 1900 may also include an input interface 1930. The processor 1910 can control the input interface 1930 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0656] Optionally, the chip 1900 may also include an output interface 1940. The processor 1910 can control the output interface 1940 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0657] 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.

[0658] 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.

[0659] 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.

[0660] Figure 20 is a schematic block diagram of a communication system 2000 provided in an embodiment of this application. As shown in Figure 20, the communication system 2000 includes a terminal device 2010 and a network device 2020.

[0661] 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.

[0662] 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.

[0663] 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.

[0664] 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.

[0665] This application also provides a computer-readable storage medium for storing computer programs.

[0666] 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.

[0667] 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.

[0668] This application also provides a computer program product, including computer program instructions.

[0669] 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.

[0670] 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.

[0671] This application also provides a computer program.

[0672] 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.

[0673] 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.

[0674] 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.

[0675] 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.

[0676] 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.

[0677] 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.

[0678] 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.

[0679] 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.

[0680] 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 network device determines a first maximum configurable channel bandwidth and a first guard band in the first channel bandwidth, and the first maximum configurable channel bandwidth and the first guard band are related to the first information; The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

2. The method according to claim 1, wherein, The first relationship is used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under the subcarrier spacing SCS.

3. The method according to claim 1 or 2, wherein, The first relationship is the relationship between the second channel bandwidth and the first, second, and third quantities; wherein, The first quantity is the maximum number of RBs included in the second channel bandwidth; The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth; The third quantity is the number of RBs included in the second guard band within the second channel bandwidth.

4. The method according to claim 3, wherein, The first channel bandwidth is one of one or more second channel bandwidths included in the first information; The first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number is the second number corresponding to the first channel bandwidth in the first information; The first protection band includes a fifth number of RBs, and the fifth number is the third number corresponding to the first channel bandwidth in the first information.

5. The method according to claim 3, wherein, The first information is used to determine the second information, which includes one or more second relationships. The second relationship is the relationship between the channel bandwidth interval corresponding to the second channel bandwidth and the third quantity. Different channel bandwidth intervals correspond to different third quantities.

6. The method according to claim 5, wherein, The bandwidth of the first channel is an integer multiple of the first bandwidth.

7. The method according to claim 6, wherein, The first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information; The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on a fifth number and a sixth number, the sixth number being the maximum number of RBs included in the first channel bandwidth, and the fifth number being related to the second information; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

8. The method according to claim 5, wherein, The bandwidth of the first channel is an integer multiple of RB.

9. The method according to claim 8, wherein, The first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information; The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on a fifth number and a sixth number, the sixth number being the maximum number of RBs included in the first channel bandwidth, and the fifth number being related to the second information; The first protective strip includes the fifth number of RBs.

10. The method according to claim 7 or 9, wherein, The fifth quantity is related to the second information and includes: The fifth quantity is the third quantity corresponding to the third channel bandwidth, the third channel bandwidth is the second channel bandwidth corresponding to the first bandwidth interval, and the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the second information.

11. The method according to claim 1 or 2, wherein, The first relationship is the relationship between the second channel bandwidth and the second quantity and the first spectrum utilization rate; wherein, The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth; The first spectrum utilization rate is the spectrum utilization rate of the second maximum configurable channel bandwidth occupied by the second channel bandwidth.

12. The method according to claim 11, wherein, The first channel bandwidth is one of one or more second channel bandwidths included in the first information; The first maximum configurable channel bandwidth includes a fourth number of RBs, wherein the fourth number is the second number corresponding to the first channel bandwidth in the first information; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

13. The method according to claim 11, wherein, The first information is used to determine the third information, which includes one or more channel bandwidth intervals, wherein the starting bandwidth and channel bandwidth of the channel bandwidth interval are two adjacent second channel bandwidths.

14. The method according to claim 13, wherein, The bandwidth of the first channel is an integer multiple of the first bandwidth or an integer multiple of RB.

15. The method according to claim 14, wherein, The first channel bandwidth is not any one of the one or more second channel bandwidths included in the first information; The first maximum configurable channel bandwidth includes a fourth number of RBs, the fourth number being determined based on the first channel bandwidth and a second spectral efficiency, the second spectral efficiency being related to the third information; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

16. The method according to claim 15, wherein, The second spectral utilization rate is related to the third information, including: The second spectral efficiency is determined based on one or more of the following: The first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth range; The first spectral efficiency corresponding to the end bandwidth of the first channel bandwidth interval; Wherein, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the third information.

17. The method according to any one of claims 1-16, wherein, The method further includes: The network device sends a fourth piece of information to the terminal device, the fourth piece of information being used to indicate the fourth quantity corresponding to each carrier in one or more carriers.

18. The method according to claim 17, wherein, The network device schedules the transmission of the terminal device on a single carrier. The fourth information is also used to indicate the starting position of the first configurable channel bandwidth of the carrier.

19. The method of claim 17, wherein, The network device schedules the transmission of the terminal device on multiple consecutive carriers; The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth for each of the plurality of carriers; or, The fourth information is also used to indicate the starting position of the plurality of the first maximum configurable channel bandwidths of the plurality of carriers.

20. The method of claim 17, wherein, The network device schedules the transmission of the terminal device on multiple non-contiguous carriers; The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of each of the plurality of carriers.

21. The method according to any one of claims 1-20, wherein the method further comprises: The network device receives fifth information from one or more frequency bands sent by the terminal device, the fifth information being used to indicate the channel bandwidth supported by the corresponding frequency band.

22. The method according to claim 21, wherein, The fifth piece of information includes: The terminal device supports the minimum and maximum channel bandwidth. The terminal device supports the minimum channel bandwidth, the maximum channel bandwidth, and the channel bandwidth between the minimum channel bandwidth and the maximum channel bandwidth.

23. The method according to claim 22, wherein, The minimum channel bandwidth is one of the multiple second channel bandwidths included in the first information, and the maximum channel bandwidth is one of the multiple second channel bandwidths included in the first information.

24. The method according to claim 21, wherein, The fifth piece of information includes: Type I channel bandwidth and / or Type II channel bandwidth; The first type of channel bandwidth includes one or more of the second channel bandwidths, and the second type of channel bandwidth includes one or more channel bandwidth intervals based on the second channel bandwidths; The terminal device supports the first type of channel bandwidth and / or the second type of channel bandwidth.

25. The method according to claim 24, wherein, The fifth piece of information does not include the second type of channel bandwidth used to indicate that the terminal device does not support the channel bandwidth range based on the second type of channel bandwidth; or, The fourth information does not include the second type of channel bandwidth used to indicate that the terminal device supports all channel bandwidth ranges based on the second type of channel bandwidth.

26. The method according to any one of claims 21-25, wherein, The fifth piece of information also includes: The terminal device supports a second bandwidth, which is the maximum total bandwidth of multiple carriers.

27. The method according to any one of claims 1-26, wherein, The method further includes: During the initial access phase, the network device configures the initial bandwidth portion (BWP) to the terminal device; or, During the initial access phase, the network device configures a fourth channel bandwidth to the terminal device. The fourth channel bandwidth is the minimum channel bandwidth supported by multiple frequency bands, and the fourth channel bandwidth is used to determine the initial BWP.

28. A wireless communication method, the method comprising: The terminal device determines the first channel bandwidth and the first guard band corresponding to the fourth quantity, wherein the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth, and the first channel bandwidth and the first guard band are related to the first information; The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

29. The method according to claim 28, wherein, The first relationship is used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth under the subcarrier spacing SCS.

30. The method according to claim 28 or 29, wherein, The first relationship is the relationship between the second channel bandwidth and the first, second, and third quantities; wherein, The first quantity is the maximum number of RBs included in the second channel bandwidth; The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth; The third quantity is the number of RBs included in the second guard band within the second channel bandwidth.

31. The method according to claim 30, wherein, The fourth quantity is one of one or more second quantities included in the first information; The first channel bandwidth includes a sixth number of RBs, where the sixth number is the first number corresponding to the second number in the first information; The first protective strip includes a fifth number of RBs, the fifth number being the third number corresponding to the second number in the first information.

32. The method according to claim 30, wherein, The first information is used to determine the second information, which includes one or more second relationships. The second relationship is the relationship between the channel bandwidth interval corresponding to the second channel bandwidth and the third quantity. Different channel bandwidth intervals correspond to different third quantities.

33. The method according to claim 32, wherein, The bandwidth of the first channel is an integer multiple of the first bandwidth.

34. The method according to claim 33, wherein, The fourth quantity is not any one of the one or more second quantities included in the first information; The first channel bandwidth is determined based on a sixth quantity and the first bandwidth, wherein the sixth quantity is the maximum number of RBs included in the first channel bandwidth, the sixth quantity is determined based on the fourth quantity and the fifth quantity, and the fifth quantity is related to the second information; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

35. The method according to claim 32, wherein, The bandwidth of the first channel is an integer multiple of RB.

36. The method according to claim 35, wherein, The fourth quantity is not any one of the one or more second quantities included in the first information; The first channel bandwidth includes a sixth number of RBs, the sixth number being the maximum number of RBs included in the first channel bandwidth, the sixth number being determined based on the fourth number and the fifth number, and the fifth number being related to the second information; The first protective strip includes the fifth number of RBs.

37. The method according to claim 34 or 36, wherein, The fifth quantity is related to the second information and includes: The fifth quantity is the third quantity corresponding to the third channel bandwidth, the third channel bandwidth is the second channel bandwidth corresponding to the first channel bandwidth interval, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the second information, and the first channel bandwidth interval is determined based on the fourth quantity.

38. The method according to claim 28 or 29, wherein, The first relationship is the relationship between the second channel bandwidth and the second quantity and the first spectrum utilization rate; wherein, The second quantity is the maximum number of RBs included in the second maximum configurable channel bandwidth; The first spectrum utilization rate is the spectrum utilization rate of the second maximum configurable channel bandwidth occupied by the second channel bandwidth.

39. The method according to claim 38, wherein, The fourth quantity is one of one or more second quantities included in the first information; The first channel bandwidth is determined based on the first maximum configurable channel bandwidth and the first spectrum utilization rate corresponding to the fourth quantity; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

40. The method of claim 38, wherein, The first information is used to determine the third information, which includes one or more channel bandwidth intervals, wherein the starting bandwidth and channel bandwidth of the channel bandwidth interval are two adjacent second channel bandwidths.

41. The method according to claim 40, wherein, The bandwidth of the first channel is an integer multiple of the first bandwidth.

42. The method according to claim 41, wherein, The fourth quantity is not any one of the one or more second quantities included in the first information; The first channel bandwidth is determined based on the fourth quantity, the second spectrum utilization rate, and the first bandwidth, wherein the second spectrum utilization rate is related to the third information; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

43. The method according to claim 40, wherein, The bandwidth of the first channel is an integer multiple of RB.

44. The method according to claim 43, wherein, The fourth quantity is not any one of the one or more second quantities included in the first information; The first channel bandwidth is determined based on the fourth quantity and the second spectrum utilization rate, the second spectrum utilization rate being related to the third information; The first guard band is the bandwidth of the first channel bandwidth excluding the first maximum configurable channel bandwidth.

45. The method according to claim 42 or 44, wherein, The second spectral utilization rate is related to the third information, including: The second spectral efficiency is determined based on one or more of the following: The first spectrum utilization rate corresponding to the starting bandwidth of the first channel bandwidth range; The first spectral efficiency corresponding to the end bandwidth of the first channel bandwidth interval; Wherein, the first channel bandwidth interval is the channel bandwidth interval in which the first channel bandwidth is located among one or more channel bandwidth intervals included in the third information, and the first channel bandwidth interval is determined based on the fourth quantity.

46. ​​The method according to any one of claims 28-45, wherein, The method further includes: The terminal device receives fourth information sent by the network device, the fourth information being used to indicate the fourth quantity corresponding to each carrier in one or more carriers.

47. The method according to claim 46, wherein, The network device schedules the transmission of the terminal device on a single carrier. The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of the carrier.

48. The method according to claim 46, wherein, The network device schedules the transmission of the terminal device on multiple consecutive carriers; The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth for each of the plurality of carriers; or, The fourth information is also used to indicate the starting position of the plurality of the first maximum configurable channel bandwidths of the plurality of carriers.

49. The method according to claim 46, wherein, The network device schedules the transmission of the terminal device on multiple non-contiguous carriers; The fourth information is also used to indicate the starting position of the first maximum configurable channel bandwidth of each of the plurality of carriers.

50. The method according to any one of claims 28-49, wherein the method further comprises: The terminal device sends fifth information for each of one or more frequency bands to the network device, the fifth information being used to indicate the channel bandwidth supported by the corresponding frequency band.

51. The method according to claim 50, wherein, The fifth piece of information includes: The terminal device supports the minimum and maximum channel bandwidth. The terminal device supports the minimum channel bandwidth, the maximum channel bandwidth, and the channel bandwidth between the minimum channel bandwidth and the maximum channel bandwidth.

52. The method according to claim 51, wherein, The minimum channel bandwidth is one of the multiple second channel bandwidths included in the first information, and the maximum channel bandwidth is one of the multiple second channel bandwidths included in the first information.

53. The method according to claim 50, wherein, The fifth piece of information includes: Type I channel bandwidth and / or Type II channel bandwidth; The first type of channel bandwidth includes one or more of the second channel bandwidths, and the second type of channel bandwidth includes one or more channel bandwidth intervals based on the second channel bandwidths; The terminal device supports the first type of channel bandwidth and / or the second type of channel bandwidth.

54. The method according to claim 53, wherein, The fifth piece of information does not include the second type of channel bandwidth used to indicate that the terminal device does not support the channel bandwidth range based on the second type of channel bandwidth; or, The fourth information does not include the second type of channel bandwidth used to indicate that the terminal device supports all channel bandwidth ranges based on the second type of channel bandwidth.

55. The method according to any one of claims 50-54, wherein, The fifth piece of information also includes: The terminal device supports a second bandwidth, which is the maximum total bandwidth of multiple carriers.

56. The method according to any one of claims 28-55, wherein, The initial bandwidth portion (BWP) during the initial access phase can be determined using one of the following methods: Network device configuration; or, The fourth channel bandwidth is determined based on the network device configuration, and the fourth channel bandwidth is the minimum channel bandwidth supported by multiple frequency bands. It is determined based on the predefined fifth channel bandwidth.

57. A network device, comprising: The first determining unit is configured to determine a first maximum configurable channel bandwidth and a first guard band in the first channel bandwidth, wherein the first maximum configurable channel bandwidth and the first guard band are related to the first information; The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

58. A terminal device, comprising: The second determining unit is configured to determine the first channel bandwidth and the first guard band corresponding to the fourth quantity, wherein the fourth quantity is the number of RBs included in the first maximum configurable channel bandwidth, and the first channel bandwidth and the first guard band are related to the first information; The first information includes one or more first relationships, which are used to indicate the relationship between the second channel bandwidth and the second maximum configurable channel bandwidth.

59. 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 27, or in performing the method as described in any one of claims 28 to 56.

60. 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 27, or the method as claimed in any one of claims 28 to 56.

61. 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 27, or the method as claimed in any one of claims 28 to 56.

62. 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 27, or to perform the method as claimed in any one of claims 28 to 56.

63. A computer program, the execution of which causes a computer to perform the method as claimed in any one of claims 1 to 27, or the method as claimed in any one of claims 28 to 56.

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