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

Abstract

Provided in the present application are a wireless communication method, a device, a chip, a storage medium, a program and a program product. The method comprises: a terminal device communicating with a network device on the basis of a supported first-type channel bandwidth and / or second-type channel bandwidth, wherein the first-type channel bandwidth is predefined, and the second-type channel bandwidth is different from the first-type channel bandwidth.

Description

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

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

[0002] During the measurement and acquisition of system information phase, after powering on, the terminal device searches for the Synchronization Signal and PBCH Block (SSB) in the network (NW). For the terminal device, acquiring the SSB is crucial for connecting to the cell, thereby enabling network communication after connection.

[0003] In 5G communication systems, channel bandwidth is a non-continuous discrete value defined by standards, such as 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz. When terminal devices conduct network communication, they can transmit communication data based on the standard-defined channel bandwidth. However, during the transmission of communication data, the channel bandwidth used by the communication data may be greater than the channel bandwidth adapted to the communication data, thus leading to a waste of spectrum resources. Summary of the Invention

[0004] This application provides a wireless communication method, device, chip and storage medium, program and program product.

[0005] The wireless communication method provided in this application includes:

[0006] The terminal device communicates with the network device based on the supported Type I channel bandwidth and / or Type II channel bandwidth;

[0007] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0008] The wireless communication method provided in this application includes:

[0009] The network device communicates with the terminal device based on the first type of channel bandwidth and / or the second type of channel bandwidth supported by the terminal device;

[0010] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0011] The terminal device provided in this application includes: a first communication unit configured to communicate with a network device based on a supported first type of channel bandwidth and / or a second type of channel bandwidth; the first type of channel bandwidth is predefined; the second type of channel bandwidth is different from the first type of channel bandwidth.

[0012] The network device provided in this application embodiment includes: a second communication unit configured to communicate with the terminal device based on a first type of channel bandwidth and / or a second type of channel bandwidth supported by the terminal device;

[0013] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0014] The communication device provided in this application includes a memory, a processor, and a transceiver. The memory stores computer programs, and the processor calls and runs the computer programs stored in the memory to perform the signal transmission or signal reception methods described above in conjunction with the transceiver.

[0015] The chip provided in this application embodiment is used to implement the above-described wireless communication method.

[0016] Specifically, the chip includes: a memory for storing computer programs;

[0017] The processor, connected to the memory, is used to retrieve and run a computer program from the memory, causing the device equipped with the chip to perform the aforementioned wireless communication method.

[0018] The computer-readable storage medium provided in this application embodiment stores a computer program that, when executed by at least one processor, implements the above-described wireless communication method.

[0019] The computer program product provided in this application includes a computer program or instructions, which, when executed by a processor, implement the above-described wireless communication method.

[0020] The computer program provided in this application embodiment enables a computer to execute the above-described wireless communication method.

[0021] In this embodiment of the application, the first type of channel bandwidth is predefined, while the second type of channel bandwidth can be a more flexible or smaller channel bandwidth compared to the first type of channel bandwidth. In this way, with the support of the second type of channel bandwidth, the terminal device can make more efficient use of spectrum resources when conducting network communication. Attached Figure Description

[0022] 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:

[0023] Figure 1 is a schematic diagram of a communication architecture provided in an embodiment of this application;

[0024] Figure 2 is a schematic diagram of the structure of the SSB provided in an embodiment of this application;

[0025] Figure 3 is a schematic diagram of the transmission effect of the SSB burst set provided in the embodiment of this application;

[0026] Figure 4 is a schematic diagram of an optional SSB transmittable location provided in an embodiment of this application;

[0027] Figure 5 is a flowchart illustrating a wireless communication method provided in an embodiment of this application;

[0028] Figure 6 is a flowchart illustrating a wireless communication method provided in an embodiment of this application;

[0029] Figure 7 is a schematic diagram of an optional first type of channel bandwidth provided in an embodiment of this application;

[0030] Figure 8 is a schematic diagram of an optional multi-carrier cell provided in an embodiment of this application;

[0031] Figure 9 is a schematic diagram of the structural composition of a terminal device provided in an embodiment of this application;

[0032] Figure 10 is a schematic diagram of the structural composition of a network device provided in an embodiment of this application;

[0033] Figure 11 is a schematic diagram of the structural composition of a communication device provided in an embodiment of this application;

[0034] Figure 12 is a schematic structural diagram of a chip provided in an embodiment of this application;

[0035] Figure 13 is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0036] 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.

[0037] Figure 1 is a schematic diagram of an application scenario of an embodiment of this application.

[0038] 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.

[0039] 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 NR communication system), or future communication systems, etc.

[0040] In the communication system 100 shown in Figure 1, the network device 120 can be an access network device that communicates with the terminal device 110. The access network device can provide communication coverage for a specific geographical area and can communicate with the terminal device 110 located within that coverage area.

[0041] Network device 120 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a radio controller in a Cloud Radio Access Network (CRAN), or network device 120 may be a relay station, access point, vehicle-mounted equipment, wearable device, hub, switch, bridge, router, or network equipment in a future evolved Public Land Mobile Network (PLMN), etc.

[0042] 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.

[0043] For example, terminal equipment 110 can refer to an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device. An access terminal can be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, IoT device, satellite handheld terminal, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal equipment in a 5G network, or terminal equipment in a future evolved network, etc.

[0044] Terminal device 110 can be used for device-to-device (D2D) communication.

[0045] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

[0046] It should be noted that Figure 1 is merely an example illustrating the system to which this application applies. Of course, the method 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.

[0047] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0048] It should be understood that the terms "first, second, third" used in the embodiments of this application are only used to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0049] It should also be understood that the term "and / or" in this article is merely a description of 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 article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] It should also be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0051] It should also be understood that the term "correspondence" mentioned in the embodiments of this application may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship of instruction and being instructed, configuration and being configured, etc.

[0052] 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 methods that can be used to indicate relevant information in the device (e.g., including the sending end and the receiving end), and this application does not limit the specific implementation method. For example, predefined can refer to what is 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 it.

[0053] 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.

[0054] In an NR system, the initial access process generally includes the following steps:

[0055] First, during the system information measurement and acquisition phase, after powering on, the UE searches for the Synchronization Signal and PBCH Block (SSB) in the network (NW). For the UE, measuring and selecting the optimal SSB serves to obtain downlink time synchronization, determine the uplink transmission beam direction, and decode the Physical Broadcast Channel (PBCH) within the SSB. The PBCH contains the higher-layer Master Information Block (MIB), which in turn contains scheduling information for the Physical Downlink Shared Channel (PDSCH) carrying System Information Block (SIB) 1.

[0056] In this system, the user equipment (UE) can scan and measure the SSBs transmitted from the base station to evaluate signal quality (such as L1-Reference Signal Receiving Power, L1-RSRP) and select the optimal SSB for access. Figure 2 is a schematic diagram of the structure of a synchronization signal block provided in an embodiment of this application. As shown in Figure 2, the SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH, and a PBCH demodulation reference signal (DMRS). The PSS and SSS contain 12 Physical Resource Blocks (PRBs) in the frequency domain, and the PBCH contains 20 PRBs in the frequency domain. The SSB can indicate the cell identity document (ID), support UE time-frequency synchronization, obtain the MIB, assist in cell search, and be used for Radio Resource Management (RRM) and Radio Link Management (RLM) measurements, etc.

[0057] In 5G, coverage requirements are met by introducing a beam sweeping mechanism, essentially trading time for space. To this end, 5G periodically transmits SSBs in the time domain in the form of SSB burst sets. Each SSB burst set contains multiple SSBs, all concentrated within a 5ms range. Different SSBs may have different beam directions, thus achieving coverage in different directions. As shown in Figure 3, SSB burst sets are transmitted at a period of 20ms, and each SSB burst set contains 8 SSBs, corresponding to indices #0 to #7. Different SSBs target different beam directions, ensuring that UEs in different directions can receive SSBs with sufficiently high RSRP.

[0058] The transmission period of the SSB burst set can vary from 5 milliseconds to 160 milliseconds, for example, it can be {5, 10, 20, 40, 80, 160} ms. This period can be configured via higher-layer signaling. However, for a UE performing initial cell search, it cannot receive higher-layer signaling regarding the transmission period of the SSB burst set before searching for an SSB. Therefore, a default period needs to be defined. In the NR system, the default period for a UE performing initial cell search is defined as 20 ms. When the relevant higher-layer signaling received by the UE contains the period information of the SSB burst set, the period of the SSB burst set can be determined through this information; otherwise, the UE defaults to a period of 5 ms for the SSB burst set of the serving cell.

[0059] It should also be noted that within each SSB burst set period, all SSBs are transmitted within a half-frame (5ms). Within frequency range 1 (FR1), a maximum of four time slots contain SSBs within a half-frame. The Orthogonal Frequency Division Multiplexing (OFDM) symbol for each SSB varies depending on the subcarrier spacing and the transmission capacity of the SSB. For example, referring to Figure 4, which illustrates a possible SSB transmission location, within a half-frame (5ms), an SSB can be transmitted in the first four subframes (1ms). In addition, in each subframe, in the 15kHz subcarrier spacing scheme, the SSB transmission positions include: OFDM symbols 2-5 and OFDM symbols 8-11; in one scheme of 30kHz subcarrier spacing, the SSB transmission positions may include OFDM symbols 4-7 and OFDM symbols 8-11 in the first time slot, and OFDM symbols 2-5 and OFDM symbols 6-9 in the second time slot; in another scheme of 30kHz subcarrier spacing, the SSB transmission positions may include OFDM symbols 2-5 and OFDM symbols 8-11 in each time slot.

[0060] After selecting the optimal SSB, the UE can decode the PBCH to obtain the MIB. Based on the configuration information in the MIB and the system message transmission method determined in the protocol, the UE blindly detects the Physical Downlink Control Channel (PDCCH) for scheduling system messages from the control-resource set (CORESET) #0 and the search space #0. From the PDCCH, it decodes the scheduling information of the PDSCH used to schedule the SIB1 carrier, thereby obtaining the RACH configuration information in SIB1. Here, CORESET is the set of PDCCH candidate sets on time-frequency resources, while the Search Space is the search range of the PDCCH candidate sets within CORESET.

[0061] Next is the RACH phase. The UE sends a PRACH within a Random Access Occasion (RO). The UE determines the RO to use based on the index of the selected SSB and the association between the SSB and the RO. In NR Rel.15, a four-step RACH procedure was supported; later versions supported a two-step RACH procedure (Step A and Step B). This explanation uses the four-step RACH as an example.

[0062] (1) Transmission of random access preamble (Preamble as Msg.1). The UE selects a random access preamble and transmits it to the base station's transmission point (TRP) on the PRACH. The PRACH preamble sequence consists of a root sequence and its cyclic shift. The PRACH preamble defines the specific format of the PRACH preamble, including time-domain resources and frequency-domain resources.

[0063] (2) Random Access Response (RAR) (RAR as Msg.2). After receiving the preamble, the base station sends a RAR to the UE, which includes Timing Advance (TA), Uplink Resource Grant (UL grant), and Cell-Radio Network Temporary Identifier (C-RNTI). The UE listens to the PDCCH to receive the RAR. If the UE successfully receives a RAR and the preamble sequence in the RAR is the same as the preamble sequence sent by the UE, it is considered that the RAR has been successfully received, uplink resources have been obtained, and uplink data can be sent.

[0064] (3) RRC Connection Request (Msg.3). The UE sends an RRC Setup Request message using the uplink resources allocated in the RAR. This message contains the UE identifier and the reason for establishment. This step is part of the contention-based random access procedure.

[0065] (4) RRC Connection Device (Msg.4). After receiving the RRC connection request, the base station sends an RRC connection setup message to confirm the connection request and allocate the necessary resources. This message is used to resolve possible contention-based preamble sequence conflicts and marks the completion of the initial access procedure.

[0066] In 5G communication systems, channel bandwidth is a non-continuous discrete value defined by the standard, including 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz. In 6G, in order to make more efficient use of spectrum resources, the communication system needs to support more flexible and smaller channel bandwidths, such as 1MHz, 2MHz, 7MHz, etc. However, there is no ideal method to support these flexible bandwidths.

[0067] 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.

[0068] This application provides a wireless communication method applied to a terminal device, as shown in Figure 5. The method includes:

[0069] S501. The terminal device communicates with the network device based on the supported Type I channel bandwidth and / or Type II channel bandwidth.

[0070] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0071] This application provides a wireless communication method applied to a network device, as shown in Figure 6. The method includes:

[0072] S601. The network device communicates with the terminal device based on the first type of channel bandwidth and / or the second type of channel bandwidth supported by the terminal device.

[0073] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0074] The wireless communication method shown in Figure 5 or Figure 6 will now be described.

[0075] In some implementations, the first type of channel bandwidth can be predefined by a standard.

[0076] In some embodiments, a first type of channel bandwidth set may be predefined, which includes one or more first type of channel bandwidths. The first type of channel bandwidths in the first type of channel bandwidth set can be understood as a series of discrete channel bandwidths.

[0077] In one example, the first type of channel bandwidth set includes the following first type of channel bandwidths: 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz.

[0078] In this embodiment of the application, the terminal device may simultaneously support one or more of the first type of channel bandwidths in the first type of channel bandwidth set.

[0079] In some implementations, the second type of channel bandwidth is different from the first type of channel bandwidth. This can be understood as the first type of channel bandwidth being different in size from the second type of channel bandwidth.

[0080] In some embodiments, the second type of channel bandwidth is the channel bandwidth outside the first type of channel bandwidth set.

[0081] In one example, the first set of channel bandwidths may include 3MHz, 5MHz, 10MHz, 15MHz, ..., 100MHz, and the second set of channel bandwidths may include 1MHz, 2MHz, 7MHz, etc.

[0082] In this embodiment of the application, the second type of channel bandwidth can be referred to as flexible channel bandwidth.

[0083] Understandably, the second type of channel bandwidth can be a more flexible or smaller channel bandwidth compared to the first type of channel bandwidth.

[0084] In this embodiment of the application, the spectrum resources can be utilized more effectively by supporting the second type of channel bandwidth.

[0085] In some embodiments, based on the wireless communication method of FIG5, the wireless communication method provided in this application embodiment further includes: a terminal device receiving first information sent by a network device, the first information being used to determine whether the terminal device is allowed to access a first cell with the first type of channel bandwidth and / or the second type of channel bandwidth.

[0086] Accordingly, based on the wireless communication method in Figure 6, the wireless communication method provided in this application embodiment further includes: a network device sending first information to a terminal device, the first information being used to determine whether the terminal device is allowed to access the first cell with the first type of channel bandwidth and / or the second type of channel bandwidth.

[0087] In some embodiments, the network device may periodically broadcast first information.

[0088] The terminal device receives the first information sent by the network device, and determines whether the terminal device is allowed to access the first cell based on the first information and the first type of channel bandwidth set and / or the second type of channel bandwidth set.

[0089] In some embodiments, the first information is carried in a System Information Block (SIB).

[0090] In some implementations, the first information can be carried in SIBm, where m can take values ​​such as 1, 2, 3, etc. In this embodiment, no limitations are placed on the SIB carrying the first information.

[0091] Taking the first information carried on SIB1 as an example, the terminal device can listen to SIB1 through the MIB in SSB and the system configuration, and obtain the first information by decoding the received SIB1.

[0092] Taking the first information carried in SIM m and m not being 1 as an example, the terminal device can listen to SIBm through the scheduling information carried by SIBn and decode the first information based on the received SIBm; where n is less than m.

[0093] In one implementation, the terminal device determines whether it is allowed to access the first cell based on the first information and the first type of channel bandwidth in the first type of channel bandwidth set.

[0094] In one implementation, the terminal device determines whether it is allowed to access the first cell based on the first information and the second type of channel bandwidth in the second type of channel bandwidth set.

[0095] In one implementation, the terminal device determines whether it is allowed to access the first cell based on first information, the first type of channel bandwidth in the first type of channel bandwidth set, and the second type of channel bandwidth in the second type of channel bandwidth set.

[0096] In some embodiments, the first information relates to carrier bandwidth and / or initial BWP.

[0097] In some embodiments, the first information includes one or more of the following:

[0098] First configuration information, the first configuration information is used to determine whether the terminal device is allowed to access the first cell with a first criterion, the first criterion being related to the maximum transmission bandwidth configurable by the first type of channel bandwidth and / or the second type of channel bandwidth;

[0099] The second configuration information is used to determine, in conjunction with a second criterion, whether the terminal device is allowed to access the first cell, wherein the second criterion is related to the first type of channel bandwidth and / or the second type of channel bandwidth.

[0100] In some implementations, the configurable maximum transmission bandwidth of the first type of channel bandwidth and / or the second type of channel bandwidth can be predefined.

[0101] In some implementations, the configurable maximum transmission bandwidth of the first type of channel bandwidth and / or the second type of channel bandwidth can be determined based on one or more of frequency utilization and guard band size, wherein the frequency utilization and / or guard band size can be predefined or configured by the network device. In this case, if the first information conforms to or matches the first criterion, it is determined that the terminal device is allowed to access the first cell; if the first information does not conform to or does not match the first criterion, it is determined that the terminal device is prohibited from accessing the first cell.

[0102] In some implementations, if the terminal device is allowed to access the first cell, the terminal device may enter the RACH phase to perform a random access procedure.

[0103] In some implementations, where the first information includes first configuration information, the first configuration information is used to determine, along with a first criterion, whether the terminal device is allowed to access the first cell.

[0104] In some implementations, where the first information includes second configuration information, the second configuration information is used to determine, along with a second criterion, whether the terminal device is allowed to access the first cell.

[0105] In some implementations, when the first information includes first configuration information and second configuration information, the first configuration information is used to determine whether the terminal device is allowed to access the first cell based on a first criterion, and the second configuration information is used to determine whether the terminal device is allowed to access the first cell based on a second criterion.

[0106] In some implementations, the terminal device is allowed to access the first cell if one of the first and second criteria is met; otherwise, the terminal device is not allowed to access the first cell.

[0107] In one example, if the first criterion is met but the second criterion is not met, the terminal device is allowed to access the first cell; otherwise, the terminal device is not allowed to access the first cell.

[0108] In one example, if the second criterion is met but the first criterion is not met, the terminal device is allowed to access the first cell; otherwise, the terminal device is not allowed to access the first cell.

[0109] In some implementations, the terminal device is allowed to access the first cell if both the second criterion and the first criterion are met; otherwise, the terminal device is not allowed to access the first cell.

[0110] In some implementations, whether the first criterion is met can be obtained by comparing the first configuration information with the maximum transmission bandwidth configurable for the first type of channel bandwidth, and / or by comparing the second configuration information with the maximum transmission bandwidth configurable for the second type of channel bandwidth.

[0111] In some implementations, whether the first criterion is met can be obtained by comparing the first configuration information with the first type of channel bandwidth, and / or by comparing the second configuration information with the second type of channel bandwidth.

[0112] In this embodiment, by judging based on the first information and the first criterion and / or the second criterion, it can be determined whether the terminal device is allowed to access the first cell. In this way, if the terminal device supports access to the first cell, the terminal device can enter the RACH phase to perform a random access procedure, thereby ultimately connecting the terminal device to the first cell. After connecting to the first cell, the terminal device can select a channel bandwidth that is compatible with the data to be transmitted from the first type of channel bandwidth and / or the second type of channel bandwidth for data transmission, which can make more efficient use of spectrum resources.

[0113] In some embodiments, the bandwidth of the first type of channel and / or the maximum configurable transmission bandwidth of the second type of channel is represented by the bandwidth size, i.e., the value includes a value in Hz.

[0114] In some embodiments, the bandwidth of the first type of channel and / or the maximum configurable transmission bandwidth of the second type of channel are represented based on the number of physical resource blocks (PRBs).

[0115] In some implementations, the number of PRBs corresponding to the configurable maximum transmission bandwidth of the first type of channel bandwidth can be predefined, in which case the first type of channel bandwidth can be considered predefined; and / or, the number of PRBs corresponding to the configurable maximum transmission bandwidth of the second type of channel is predefined, in which case the second type of channel bandwidth can be considered predefined.

[0116] In some implementations, when customizing the second type of channel bandwidth, the number of PRBs corresponding to the maximum configurable transmission bandwidth of the second type of channel bandwidth can be customized.

[0117] In some implementations, when predefining the first type of channel bandwidth, the number of PRBs corresponding to the maximum configurable transmission bandwidth of the first type of channel bandwidth can be predefined.

[0118] In one example, when predefining the first type of channel bandwidth, the maximum number of RBs (useful channel bandwidths) that can be configured for each first type of channel bandwidth is defined, as shown in Table 1 below.

[0119] Table 1 Examples of configurable maximum number of RBs for different channel bandwidths and subcarrier spacings.

[0120] Furthermore, when predefining the first type of channel bandwidth, the minimum guard band that can be configured for each first type of channel bandwidth is predefined, as shown in Table 2 below.

[0121] Table 2 Examples of minimum guard intervals for different channel bandwidths and subcarrier spacings.

[0122] The following explanation focuses on the first type of channel bandwidth, as shown in Figure 7. The first type of channel bandwidth includes the effective bandwidth module for data transmission, which is the transmission bandwidth configuration N in the figure. RB (RB) module, and located in the transmission bandwidth configuration N RB The (RB) module has guard band modules on both sides, and these guard band modules can be asymmetrical. For the transmission bandwidth configuration N... RB The module can be seen to include multiple resource blocks. Active resource blocks refer to resource blocks that are currently being used or allocated for data transmission.

[0123] In some embodiments, the first configuration information includes one or more of the following:

[0124] Reference downlink carrier bandwidth and initial downlink bandwidth portion of BWP;

[0125] Refer to the uplink carrier bandwidth and initial uplink BWP.

[0126] The reference downlink carrier bandwidth and the reference uplink carrier bandwidth can be the same or different.

[0127] The initial downlink BWP can be the same as or different from the initial downlink BWP.

[0128] In some embodiments, one or more of the reference downlink carrier bandwidth, initial downlink BWP, reference uplink carrier bandwidth, and initial uplink BWP may be represented based on the number of PRBs.

[0129] In one example, the reference downlink carrier bandwidth and initial downlink BWP can be represented based on the bandwidth size, while the reference uplink carrier bandwidth and initial uplink BWP can be represented based on the number of PRBs.

[0130] In one example, the reference downlink carrier bandwidth and initial downlink BWP can be represented based on the number of PRBs, while the reference uplink carrier bandwidth and initial uplink BWP can be represented based on the bandwidth size.

[0131] In one example, the reference downlink carrier bandwidth and reference uplink carrier bandwidth can be represented based on the number of PRBs, and the initial downlink BWP and initial uplink BWP can be represented based on the bandwidth size.

[0132] In one example, the reference downlink carrier bandwidth and the initial uplink BWP can be represented based on the number of PRBs, and the initial downlink BWP and the reference uplink carrier bandwidth can be represented based on the bandwidth size.

[0133] In one example, the reference downlink carrier bandwidth can be represented based on the number of PRBs, and the initial downlink BWP, reference uplink carrier bandwidth, and initial uplink BWP can be represented based on the bandwidth size.

[0134] In one example, the initial downlink BWP can be represented based on the number of PRBs, and the reference downlink carrier bandwidth, reference uplink carrier bandwidth, and initial uplink BWP can be represented based on the bandwidth size.

[0135] In one example, the reference uplink carrier bandwidth can be represented based on the number of PRBs, while the reference downlink carrier bandwidth, initial downlink BWP, and initial uplink BWP can be represented based on the bandwidth size.

[0136] In one example, the initial uplink BWP can be represented based on the number of PRBs, and the reference downlink carrier bandwidth, initial downlink BWP, and reference uplink carrier bandwidth can be represented based on the bandwidth size.

[0137] In one example, the reference downlink carrier bandwidth, the initial downlink BWP, and the reference uplink carrier bandwidth can be represented based on the number of PRBs, and the initial uplink BWP can be represented based on the bandwidth size.

[0138] In one example, the reference downlink carrier bandwidth, initial downlink BWP, and initial uplink BWP can be represented based on the number of PRBs, and the reference uplink carrier bandwidth can be represented based on the bandwidth size.

[0139] In one example, the reference downlink carrier bandwidth, reference uplink carrier bandwidth, and initial uplink BWP can be represented based on the number of PRBs, and the reference uplink carrier bandwidth can be represented based on the bandwidth size.

[0140] In one example, the reference uplink carrier bandwidth, initial downlink BWP, and initial uplink BWP can be represented based on the number of PRBs, and the reference downlink carrier bandwidth can be represented based on the bandwidth size.

[0141] In some embodiments, one or more of the reference downlink carrier bandwidth, initial downlink BWP, reference uplink carrier bandwidth, and initial uplink BWP are represented based on bandwidth size.

[0142] In one example, the reference downlink carrier bandwidth, initial downlink BWP, reference uplink carrier bandwidth, and initial uplink BWP can be represented based on bandwidth size.

[0143] In some embodiments, the first criterion includes one or more of the following:

[0144] The maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth and greater than or equal to the initial downlink BWP. The first channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the first channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0145] The maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth and greater than or equal to the initial uplink BWP. The second channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the second channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0146] The maximum transmission bandwidth can be expressed based on the number of PRBs or the bandwidth size. Correspondingly, the reference downlink carrier bandwidth can also be expressed based on the number of PRBs or the bandwidth size. Therefore, the representation methods for the maximum transmission bandwidth and the reference downlink carrier bandwidth may differ. Similarly, the representation methods for the maximum transmission bandwidth and the reference uplink carrier bandwidth, the maximum transmission bandwidth and the initial uplink BWP, and the maximum transmission bandwidth and the initial downlink BWP may differ.

[0147] In this embodiment, the first channel bandwidth is any channel bandwidth in the first channel bandwidth set supported by the terminal device, or the first channel bandwidth is any channel bandwidth in the first channel bandwidth set and the second channel bandwidth set supported by the terminal device. The second channel bandwidth is any channel bandwidth in the first channel bandwidth set supported by the terminal device, or the second channel bandwidth is any channel bandwidth in the first channel bandwidth set and the second channel bandwidth set supported by the terminal device.

[0148] The first channel bandwidth and the second channel bandwidth can be the same channel bandwidth or different channel bandwidths.

[0149] In this embodiment of the application, the first criterion includes one or more of the following criteria.

[0150] Criterion 1: The first channel bandwidth supported by the terminal device is a channel bandwidth in the first type of channel bandwidth set, the maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and the maximum transmission bandwidth of the first channel bandwidth is greater than or equal to the initial downlink BWP; and / or, the second channel bandwidth supported by the terminal device is a channel bandwidth in the first type of channel bandwidth set, the maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and the maximum transmission bandwidth of the second channel bandwidth is greater than or equal to the initial uplink BWP.

[0151] Guideline 2: The first channel bandwidth supported by the terminal device is a channel bandwidth from either the first type of channel bandwidth set or the second type of channel bandwidth set, wherein the maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and the maximum transmission bandwidth of the first channel bandwidth is greater than or equal to the initial downlink BWP; and / or, the second channel bandwidth supported by the terminal device is a channel bandwidth from either the first type of channel bandwidth set or the second type of channel bandwidth set, wherein the maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and the maximum transmission bandwidth of the second channel bandwidth is greater than or equal to the initial uplink BWP.

[0152] Guideline 3: The first channel bandwidth supported by the terminal device is a channel bandwidth from either the first type of channel bandwidth set or the second type of channel bandwidth set, wherein the maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and the maximum transmission bandwidth of the first channel bandwidth is greater than or equal to the initial downlink BWP; and / or, the second channel bandwidth supported by the terminal device is a channel bandwidth from either the first type of channel bandwidth set, wherein the maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and the maximum transmission bandwidth of the second channel bandwidth is greater than or equal to the initial uplink BWP.

[0153] Guideline 4: The first channel bandwidth supported by the terminal device is a channel bandwidth in the first type of channel bandwidth set, the maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and the maximum transmission bandwidth of the first channel bandwidth is greater than or equal to the initial downlink BWP; and / or, the second channel bandwidth supported by the terminal device is a channel bandwidth in the first type of channel bandwidth set or the second type of channel bandwidth set, the maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and the maximum transmission bandwidth of the second channel bandwidth is greater than or equal to the initial uplink BWP.

[0154] Understandably, since the Type I channel bandwidth supported by the UE is predefined, the minimum protection interval for Type I channel bandwidth is clearly known. Therefore, using Criterion 1 to restrict whether the UE accesses the cell can reduce the complexity of controlling adjacent channel interference. However, Type II channel bandwidth differs from Type I channel bandwidth; it is a flexibly configurable channel bandwidth. Therefore, using the Type II channel bandwidth from any of Criterions 2, 3, and 4 to restrict whether the UE accesses the cell can increase the flexibility of terminal equipment implementation and spectrum management.

[0155] In this embodiment, the representation of the maximum transmission bandwidth and the reference downlink carrier bandwidth may differ. The representation of the maximum transmission bandwidth and the reference downlink carrier bandwidth can be unified, which can be a representation based on the number of PRBs or a representation based on the bandwidth size.

[0156] Correspondingly, when comparing the maximum transmission bandwidth of the first channel bandwidth with the initial downlink BWP, it is necessary to unify the representation of the maximum transmission bandwidth of the first channel bandwidth and the initial downlink BWP.

[0157] In some implementations, the first channel bandwidth may be determined from a first type of channel bandwidth set supported by the terminal device, or the first channel bandwidth may be determined from a first type of channel bandwidth set or a second type of channel bandwidth set supported by the terminal device.

[0158] In one example, the first channel bandwidth can be determined based on all channel bandwidths or all downlink channel bandwidths in the first type of channel bandwidth set supported by the terminal device.

[0159] In one example, the first channel bandwidth can be determined based on all channel bandwidths or all downlink channel bandwidths in a first-class channel bandwidth set or a second-class channel bandwidth set supported by the terminal device.

[0160] The method for determining the bandwidth of the second channel can be found in the method for determining the bandwidth of the first channel described above, and will not be repeated here.

[0161] In some embodiments, the first configuration information further includes:

[0162] Please refer to the supplementary uplink SUL carrier bandwidth;

[0163] SUL initial uplink BWP.

[0164] In some embodiments, the reference supplementary uplink SUL carrier bandwidth and / or the SUL initial uplink BWP are represented based on the number of PRBs.

[0165] In some embodiments, the reference supplementary uplink SUL carrier bandwidth and / or the SUL initial uplink BWP are represented based on the bandwidth size.

[0166] In some implementation examples, the first criterion further includes: the maximum transmission bandwidth of the third channel bandwidth is less than or equal to the reference supplementary uplink SUL carrier bandwidth, and greater than or equal to the SUL initial uplink BWP, wherein the third channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the third channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0167] In this embodiment of the application, the third channel bandwidth is any channel bandwidth in the first channel bandwidth set supported by the terminal device, or the third channel bandwidth is any channel bandwidth in the first channel bandwidth set and the second channel bandwidth set supported by the terminal device.

[0168] In this embodiment of the application, the first criterion includes one or more of the following criteria.

[0169] Guideline 5: The third channel bandwidth supported by the terminal device is one of the channel bandwidths in the first type of channel bandwidth set. The maximum transmission bandwidth of the third channel bandwidth is less than or equal to the supplementary uplink SUL carrier bandwidth, and the maximum transmission bandwidth of the third channel bandwidth is greater than or equal to the initial uplink BWP of the SUL.

[0170] Guideline 6: The third channel bandwidth supported by the terminal device is one of the channel bandwidths in the first type of channel bandwidth set or the second type of channel bandwidth set. The maximum transmission bandwidth of the third channel bandwidth is less than or equal to the supplementary uplink SUL carrier bandwidth, and the maximum transmission bandwidth of the third channel bandwidth is greater than or equal to the initial uplink BWP of the SUL.

[0171] In this embodiment of the application, when the first configuration information includes the reference supplementary uplink SUL carrier bandwidth and the initial uplink BWP of SUL, the first criterion may include one of the criteria one to four, and one of the criteria five to six.

[0172] As described above, the maximum transmission bandwidth can be represented based on the number of PRBs or the bandwidth size. Correspondingly, the reference supplementary uplink SUL carrier bandwidth can also be represented based on the number of PRBs or the bandwidth size. Therefore, the representation methods of the maximum transmission bandwidth and the reference supplementary uplink SUL carrier bandwidth may differ. The representation methods of the maximum transmission bandwidth and the initial uplink BWP of the SUL may also differ.

[0173] In this embodiment of the application, since the representation of the maximum transmission bandwidth and the reference supplementary uplink SUL carrier bandwidth may be different, it is first necessary to unify the representation of the maximum transmission bandwidth and the reference supplementary uplink SUL carrier bandwidth. This can be unified into a representation based on the number of PRBs or a representation based on the bandwidth size.

[0174] Correspondingly, when comparing the maximum transmission bandwidth of the third channel bandwidth with the initial uplink BWP of SUL, it is necessary to unify the representation of the maximum transmission bandwidth of the third channel bandwidth and the initial uplink BWP of SUL.

[0175] In some implementations, the third channel bandwidth may be determined from the set of bandwidths of the first type of channel bandwidths supported by the terminal device, or from the set of bandwidths of the first type of channel bandwidths or the second type of channel bandwidths supported by the terminal device.

[0176] In one example, the third channel bandwidth can be determined based on all channel bandwidths or all uplink channel bandwidths in the first type of channel bandwidth set supported by the terminal device.

[0177] In one example, the third channel bandwidth can be determined based on all channel bandwidths or all uplink channel bandwidths in the first or second set of channel bandwidths supported by the terminal device.

[0178] It should be noted that the first channel bandwidth, the second channel bandwidth, and the third channel bandwidth mentioned above can be the same channel bandwidth or different channel bandwidths.

[0179] In some embodiments, the second configuration information includes:

[0180] First uplink carrier bandwidth and / or first downlink carrier bandwidth.

[0181] In some implementations, the first uplink carrier bandwidth and / or the first downlink carrier bandwidth can be represented based on the number of PRBs.

[0182] In other implementations, the first uplink carrier bandwidth and / or the first downlink carrier bandwidth may be represented based on the bandwidth size.

[0183] In other implementations, the first uplink carrier bandwidth may be represented based on the bandwidth size, the first downlink carrier bandwidth may be represented based on the number of PRBs, or the first downlink carrier bandwidth may be represented based on the bandwidth size and the first uplink carrier bandwidth may be represented based on the number of PRBs.

[0184] The first uplink carrier bandwidth can be understood as the uplink carrier bandwidth configured by the network device. The first downlink carrier bandwidth can be understood as the downlink carrier bandwidth configured by the network device.

[0185] In one implementation, the first information does not include the second configuration information. The terminal device determines whether it is allowed to access the first cell based on whether the first configuration information matches the first criterion.

[0186] In one implementation, the first information includes second configuration information. The terminal device determines whether it is allowed to access the first cell based on whether the first configuration information matches the first criterion and whether the second configuration information matches the second criterion. In this case, the terminal device is allowed to access the first cell if both the first configuration information and the first criterion match, and the second configuration information and the second criterion match; otherwise, the terminal device is prohibited from accessing the first cell.

[0187] In some embodiments, the second criterion includes:

[0188] The first uplink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device; and / or

[0189] The first downlink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0190] In some implementations, the second configuration information includes a first uplink carrier bandwidth. The first uplink carrier bandwidth is searched from a first type of channel bandwidth set and a second type of channel bandwidth set supported by the terminal device. If the first type of channel bandwidth set supported by the terminal device includes the first uplink carrier bandwidth, then the first uplink carrier bandwidth is determined to be a first type of channel bandwidth supported by the terminal device. If the second type of channel bandwidth set supported by the terminal device includes the first uplink carrier bandwidth, then the first uplink carrier bandwidth is determined to be a second type of channel bandwidth supported by the terminal device.

[0191] In some implementations, the second configuration information includes a first downlink carrier bandwidth. The first downlink carrier bandwidth is searched from a first type of channel bandwidth set and a second type of channel bandwidth set supported by the terminal device. If the first type of channel bandwidth set supported by the terminal device includes the first downlink carrier bandwidth, then the first downlink carrier bandwidth is determined to be a first type of channel bandwidth supported by the terminal device. If the second type of channel bandwidth set supported by the terminal device includes the first downlink carrier bandwidth, then the first downlink carrier bandwidth is determined to be a second type of channel bandwidth supported by the terminal device.

[0192] It is understandable that the second criterion mentioned above can be used to determine whether the terminal device supports the first downlink carrier bandwidth and / or the first uplink carrier bandwidth. If the terminal device does not support the first downlink carrier bandwidth and / or the first uplink carrier bandwidth, the terminal device can be prevented from accessing the first cell.

[0193] In some embodiments, the first cell is a single-carrier cell; the single-carrier cell includes a downlink carrier and an uplink carrier.

[0194] In some implementations, the first cell is a single carrier. When the terminal device is allowed to access the first cell, the terminal device can enter the RACH phase to perform a random access procedure.

[0195] Here, downlink carrier refers to the carrier used for the downlink, and uplink carrier refers to the carrier used for the uplink.

[0196] The bandwidth of the uplink carrier supported by a single-carrier cell can be either the first-class channel bandwidth or the second-class channel bandwidth, and the bandwidth of the downlink carrier supported by the single-carrier cell can also be either the first-class channel bandwidth or the second-class channel bandwidth.

[0197] In some implementations, the bandwidth of the downlink carrier can be a type-1 channel bandwidth, and the bandwidth of the uplink carrier can be a type-1 channel bandwidth.

[0198] In some implementations, the bandwidth of the downlink carrier can be a type II channel bandwidth, and the bandwidth of the uplink carrier can be a type II channel bandwidth.

[0199] In some implementations, the downlink carrier bandwidth can be a second-type channel bandwidth, and the uplink carrier bandwidth can be a first-type channel bandwidth; or, the uplink carrier bandwidth can be a second-type channel bandwidth, and the downlink carrier bandwidth can be a first-type channel bandwidth.

[0200] Understandably, a single-carrier cell contains only one downlink carrier and one uplink carrier.

[0201] In some embodiments, a single-carrier cell includes only one downlink carrier and one uplink carrier, and also includes a supplementary uplink (SUL) carrier.

[0202] Understandably, setting up a SUL carrier in the first cell can extend the uplink coverage of the first cell, allowing more terminal devices located at the cell edge or in areas with weak signals to enjoy high-quality uplink services, significantly improving the uplink communication quality of terminal devices, enabling terminal devices to initiate uplink transmissions on the SUL carrier, thereby enjoying higher uplink speeds and more stable communication quality.

[0203] In some implementations, when the first cell includes a SUL carrier, the first information sent by the network device to the terminal device includes a reference supplementary uplink SUL carrier bandwidth and an initial uplink BWP of the SUL. In this way, by combining the reference supplementary uplink SUL carrier bandwidth and the initial uplink BWP of the SUL in the first information with a first criterion, it is determined whether the terminal device is allowed to access the first cell.

[0204] In some embodiments, the first cell is a multi-carrier cell; the multi-carrier cell includes multiple downlink carriers and / or one or more uplink carriers.

[0205] In some implementations, the first cell is a multi-carrier cell. When the terminal device is allowed to access the first cell, it enters the carrier configuration phase to perform carrier configuration.

[0206] In some implementations, the bandwidth of one of the multiple downlink carriers can be either a first-type channel bandwidth or a second-type channel bandwidth.

[0207] In some implementations, the bandwidth of one of the multiple uplink carriers can be either a first-type channel bandwidth or a second-type channel bandwidth.

[0208] In some implementations, when the first cell includes multiple downlink carriers, the first information sent by the network device to the terminal device includes a reference downlink carrier bandwidth and an initial downlink BWP. Thus, by combining the reference downlink carrier bandwidth, the initial downlink BWP, and at least one of the multiple downlink carriers in the first information with a first criterion, it is determined whether the terminal device is allowed to access the first cell.

[0209] In some implementations, when the first cell includes one or more carriers, the first information sent by the network device to the terminal device includes a reference uplink carrier bandwidth and an initial uplink BWP. Thus, by combining the reference uplink carrier bandwidth, the initial uplink BWP, and at least one of the one or more downlink carriers in the first information with a first criterion, it is determined whether the terminal device is allowed to access the first cell.

[0210] In some embodiments, the multicarrier cell includes one or more SUL carriers.

[0211] In some implementations, when the first cell includes one or more SUL carriers, the first information sent by the network device to the terminal device includes a reference supplementary uplink SUL carrier bandwidth and an initial uplink BWP of the SUL. Thus, by combining the reference supplementary uplink SUL carrier bandwidth, the initial uplink BWP of the SUL, and one or more SUL carriers in the first information with a first criterion, it is determined whether the terminal device is allowed to access the first cell.

[0212] Understandably, a multi-carrier cell contains only multiple downlink carriers and / or one or more uplink carriers.

[0213] In some embodiments, a multicarrier cell may contain only one or more uplink carriers and also one or more SUL carriers.

[0214] In some embodiments, a multicarrier cell includes only multiple downlink carriers and one or more uplink carriers, and also includes one or more SUL carriers.

[0215] In some embodiments, the synchronization signal and the first control resource set are carried on the same carrier or different carriers, the first control resource set being used to schedule the transmission of the SIB.

[0216] In one embodiment, the synchronization signal includes an SSB.

[0217] In one embodiment, the first control resource set may be referred to as Cell Reference Signal (CRS)-SIBm, which can be understood as the control resource set of broadcast messages SIBm that the scheduling terminal equipment must receive.

[0218] In one embodiment, the SIB is SIB1 and the first control resource set is CORESET#0.

[0219] When the terminal device determines the first control resource set, it can search for control information for scheduling SIBs within the first control resource set, thereby enabling the reception of SIBs.

[0220] In some embodiments, the initial BWP of the SIB configuration includes a first control resource set, and the SIB is located on the carrier where the first control resource set is located.

[0221] In some implementations, when the synchronization signal and the first control resource set are carried on the same carrier, and the SIB is located on the carrier where the first control resource set is located, the SIB and the synchronization signal are carried on the same carrier. In this way, the network device can send the synchronization signal and the SIB to the terminal device via the same carrier without carrier switching; after receiving the SSB, the terminal device can receive the SIB based on the same carrier without carrier switching, thus reducing carrier switching time and improving the initial access speed of the terminal device.

[0222] In some implementations, when the synchronization signal and the first control resource set are carried on different carriers, and the SIB is located on the carrier where the first control resource set is located, the SIB and the synchronization signal are carried on different carriers.

[0223] When the SIB and the synchronization signal are carried on different carriers, the synchronization signal can indirectly or directly indicate the frequency domain location of the first control resource set.

[0224] In some embodiments, where the synchronization signal and the first control resource set are carried on different carriers, the first carrier and the second carrier are associated; the first carrier is used to carry the synchronization signal, and the second carrier is used to carry the first control resource set.

[0225] Here, it can be understood that the synchronization signal indirectly indicates the frequency domain position of the first control resource set.

[0226] The first carrier carrying the synchronization signal and the second carrier carrying the first control resource set are associated, and the position of the second carrier can be determined based on the first carrier and this association.

[0227] In some embodiments, a predefined association exists between the first carrier and the second carrier.

[0228] In some embodiments, the synchronization signal includes first offset information; the first offset information is used to indicate a first frequency offset of the first control resource set relative to the starting position of the second carrier.

[0229] After determining the first carrier carrying the synchronization signal, the initial position of the second carrier can be determined based on this correlation. Then, based on the initial position of the second carrier and the first frequency offset indicated by the first offset information, the frequency domain position of the first control resource set on the second carrier is obtained.

[0230] In some embodiments, the synchronization signal includes second offset information; the second offset information is used to indicate a second frequency offset of the frequency domain starting position of the first control resource set relative to the synchronization signal; the second frequency offset is greater than the bandwidth of the first carrier.

[0231] Here, it can be understood that the synchronization signal directly indicates the frequency domain position of the first control resource set.

[0232] The network device sends second offset information to the terminal device via a synchronization signal, allowing the terminal device to determine the frequency domain location of the first control resource set based on the second offset information. Specifically, after determining the first carrier carrying the synchronization signal, the terminal device can obtain the frequency domain location of the first control resource set based on the first carrier and the second offset information.

[0233] In some embodiments, the second frequency offset includes a greater number of RBs than the number of RBs on the carrier in which the SSB is located.

[0234] In one example, the MIB of the synchronization signal includes second offset information.

[0235] In some embodiments, the synchronization signal includes: second information, the second information being used to indicate the time-domain location of the first control resource set.

[0236] In some embodiments, based on the wireless communication method of FIG5, the wireless communication method provided in this application embodiment further includes: the terminal device receiving third information sent by the network device; the third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, or the third information is used to instruct the terminal device to perform cell reselection, wherein the first uplink carrier and the first downlink carrier are carriers configured by the terminal device.

[0237] Accordingly, based on the wireless communication method in Figure 6, the wireless communication method provided in this application embodiment further includes: the network device sending third information to the terminal device; the third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, or the third information is used to instruct the terminal device to perform cell reselection, wherein the first uplink carrier and the first downlink carrier are carriers configured by the terminal device.

[0238] In some embodiments, the third information further includes one or more of the following: BWP configuration on the first uplink carrier; BWP configuration on the first downlink carrier.

[0239] In some implementations, if the terminal device meets the first criterion and / or the second criterion described above, the terminal device receives the third information sent by the network device.

[0240] In some implementations, when the third information indicates one or more first uplink carriers, the terminal device transmits uplink data via the one or more first uplink carriers indicated by the third information.

[0241] In some implementations, when the third information indicates one or more first downlink carriers, the terminal device receives downlink data via the one or more first downlink carriers indicated by the third information.

[0242] In some implementations, the bandwidth of the uplink carrier in one or more first uplink carriers may be a first type channel bandwidth and / or a second type channel bandwidth; the bandwidth of the downlink carrier in one or more first downlink carriers may be a first type channel bandwidth and / or a second type channel bandwidth.

[0243] In some implementations, when the third information is used to instruct the terminal device to perform cell reselection, it can be understood that the first cell does not support carriers supported by the terminal device, or that the terminal device does not support carriers supported by the first cell.

[0244] In some implementations, when the third information is used to instruct the terminal device to perform cell reselection, the third information may also include a second cell, so that when the terminal device receives the third information, it determines whether the terminal device is allowed to access the second cell.

[0245] When the terminal device receives third information that indicates one or more first uplink carriers and one or more first downlink carriers, it enters the RACH phase.

[0246] When the terminal device receives third information that instructs it to perform cell reselection, it enters the cell reselection phase to reselect a cell.

[0247] In this embodiment of the application, the third information can be used to instruct the terminal device to enter the RACH phase or the cell reselection phase.

[0248] In some embodiments, based on the wireless communication method of FIG5, the wireless communication method provided in this application embodiment further includes: the terminal device sending fourth information to the network device, the fourth information being used to indicate one or more fourth channel bandwidths supported by the terminal device, the fourth channel bandwidth being the first type of channel bandwidth or the second type of channel bandwidth; the third information being related to the fourth information.

[0249] Accordingly, based on the wireless communication method in Figure 6, the wireless communication method provided in this application embodiment further includes: the network device receiving fourth information sent by the terminal device, the fourth information being used to indicate one or more fourth channel bandwidths supported by the terminal device, the fourth channel bandwidth being the first type of channel bandwidth or the second type of channel bandwidth; the third information being related to the fourth information.

[0250] The terminal device sends a fourth message to the network device, indicating one or more channel bandwidths supported by the terminal device. Upon receiving the fourth message, the network device determines the third message based on it, and then configures one or more uplink carriers and one or more downlink carriers for the terminal device based on the one or more channel bandwidths supported by the terminal device. The carrier bandwidths of the one or more uplink carriers and the one or more downlink carriers belong to the one or more channel bandwidths.

[0251] In some embodiments, the fourth information may further include one or more of the following: the maximum number of PRBs in the fourth channel bandwidth; and the minimum guard interval of the fourth channel bandwidth.

[0252] In some implementations, the terminal device sends the fourth channel bandwidth and the maximum number of PRBs for the fourth channel bandwidth to the network device.

[0253] In some implementations, the terminal device sends the fourth channel bandwidth and the minimum guard interval of the fourth channel bandwidth to the network device.

[0254] In some implementations, the terminal device sends the fourth channel bandwidth, the minimum guard interval of the fourth channel bandwidth, and the maximum number of PRBs for the fourth channel bandwidth to the network device.

[0255] In some implementations, the fourth information can indicate all the fourth channel bandwidths supported by the terminal device. After receiving the fourth information, the network device configures a carrier for the terminal device based on the carriers it supports and the fourth information. If the carrier configuration is successful, the network device sends third information to the terminal device. The third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, where the first uplink carriers and the first downlink carriers are the carriers configured for the terminal device.

[0256] Understandably, in the above scenario, network devices can configure the corresponding carriers for terminal devices based on the bandwidth capabilities of the terminal devices, without the need for network devices to broadcast the carriers they support to the terminal devices. This helps reduce the load of broadcast messages, and the carriers configured through the fourth information are the carriers supported by the terminal devices, thus improving the accuracy of carrier configuration.

[0257] In some implementations, the channel bandwidth indicated by the fourth information can be supported by both the terminal device and the network device. After receiving the fourth information, the network device configures a carrier for the terminal device based on the fourth information. If the carrier configuration is successful, the network device sends a third information to the terminal device. The third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, where the first uplink carriers and the first downlink carriers are the carriers configured for the terminal device.

[0258] Understandably, in the above scenario, the terminal device does not need to report all the supported carriers, which helps to reduce the amount of information reported by the terminal device.

[0259] In some implementations, after receiving the fourth information, the network device configures a carrier for the terminal device based on the fourth information. If the carrier configuration fails, the network device sends third information to the terminal device to instruct the terminal device to perform cell reselection.

[0260] In this embodiment of the application, a fourth information network device can configure a carrier for the terminal device. After the network device completes the carrier configuration, it sends the corresponding configuration information to the terminal device through a third message, so that the terminal device can enter the RACH phase after receiving the third message.

[0261] In some embodiments, based on the wireless communication method of FIG5, the wireless communication method provided in this application embodiment further includes: the terminal device receiving fifth information of the network device; the fifth information is used to indicate one or more carriers included in the first cell, and the fourth information is related to the fifth information.

[0262] Accordingly, based on the wireless communication method in Figure 6, the wireless communication method provided in this application embodiment further includes: the network device sending fifth information to the terminal device; the fifth information is used to indicate one or more carriers included in the first cell, and the fourth information is related to the fifth information.

[0263] In some implementations, the network device may send the fifth information in a broadcast manner.

[0264] In one example, the SIB message includes a fifth piece of information, so that when the SIB is broadcast, the terminal device can decode the fifth piece of information based on the received SIB.

[0265] In some implementations, the network device may send the fifth information to the terminal device via unicast.

[0266] In some implementations, after receiving the fifth information, the terminal device compares the carrier it supports with the carrier in the fifth information to obtain the carriers that are supported by both the terminal device and the network device, and then generates the fourth information and sends it to the network device.

[0267] In some embodiments, the terminal device does not support the carrier indicated by the fifth information. Understandably, the fourth information may not support any carrier. In this case, the fourth information can be considered as indicating that the terminal device does not support the carrier supported by the network device. In this case, the third information sent by the network device to the terminal device can instruct the terminal device to perform cell reselection.

[0268] In this embodiment of the application, the fifth information enables the terminal device to obtain the carriers supported by both the terminal device and the network device in advance. This eliminates the need for the terminal device to report all supported carriers, which helps reduce the amount of information reported by the terminal device.

[0269] In some embodiments, the one or more first downlink carriers include one or more second downlink carriers, the bandwidth of the second downlink carrier being less than the bandwidth of the first control resource set.

[0270] It is understandable that the bandwidth of the second downlink carrier is less than that of the first control resource set, and the second downlink carrier does not support the transmission of control information. Therefore, the terminal device may not perform control information detection on the second downlink carrier.

[0271] In some implementations, the second downlink carrier can support the reception of downlink data channels. In this case, the terminal device does not receive control information on the second downlink carrier, but it can receive data.

[0272] It should be noted that one or more first downlink carriers include one or more second downlink carriers, and one or more first downlink carriers also include one or more third downlink carriers. The bandwidth of the third downlink carrier is greater than or equal to the bandwidth of the first control resource set. The third downlink carrier supports the detection of control information, so that the terminal device can perform control information detection on the third downlink carrier.

[0273] In some embodiments, the one or more first uplink carriers include one or more second uplink carriers, the bandwidth of which is less than the minimum bandwidth of the Physical Random Access Channel (PRACH).

[0274] It is understandable that the bandwidth of the second uplink carrier is less than the minimum bandwidth of the Physical Random Access Channel (PRACH), so the terminal device can choose not to transmit PRACH on the second downlink carrier.

[0275] In some implementations, the second uplink carrier can support the reception of the uplink data channel.

[0276] It should be noted that one or more first uplink carriers include one or more second uplink carriers, and one or more first uplink carriers also include one or more third uplink carriers. The bandwidth of the third uplink carrier is greater than or equal to the bandwidth of PRACH, so that the terminal device can support PRACH transmission on the third uplink carrier.

[0277] The wireless communication method provided in the embodiments of this application will be described in detail below with reference to specific application scenarios.

[0278] In this embodiment, the channel bandwidth supported by the UE is divided into a first type of channel bandwidth and a second type of channel bandwidth. For a UE to simultaneously support one or more channel bandwidths from the first type of channel bandwidth set, the specific values ​​of the channel bandwidths in the first type of channel bandwidth set, the maximum configurable number of PRBs under that bandwidth, and the minimum guard interval are all defined by the standard. For a UE to simultaneously support one or more channel bandwidths from the second type of channel bandwidth set, these are channel bandwidths outside the first type of channel bandwidth set. In other words, the core idea of ​​the second type of channel bandwidth set is to support flexible UE channel bandwidth.

[0279] Furthermore, this application embodiment describes the UE access cell method in a single-carrier cell scenario and a multi-carrier cell scenario. The single-carrier cell scenario refers to a cell containing only one downlink carrier and one uplink carrier. The single-carrier cell scenario may also include a supplementary uplink carrier (SUL). The multi-carrier cell scenario refers to a cell containing multiple downlink carriers and / or multiple uplink carriers, and at least one of the multiple uplink carriers is not a SUL. As shown in Figure 8, the multiple multi-carrier cells include carrier 1, carrier 2, carrier 3 and carrier 4. For example, carrier 1, carrier 2, carrier 3 and carrier 4 can be multiple downlink carriers, or carrier 1, carrier 2, carrier 3 and carrier 4 can be multiple uplink carriers.

[0280] The following examples illustrate single-carrier and multi-carrier scenarios respectively.

[0281] Example 1: Single-carrier scenario.

[0282] If the UE supports Type II channel bandwidth, the UE detects the synchronization signal and SIBm transmitted by the base station, and obtains the initial uplink BWP, initial downlink BWP, reference downlink carrier bandwidth, and reference uplink carrier bandwidth from SIBm. SIBm may also include a reference SUL bandwidth. SIBm is a broadcast message that the UE must receive; for example, SIBm can be SIB1, and the uplink reference carrier bandwidth, downlink reference carrier bandwidth, and SUL reference carrier bandwidth can be indicated by specific parameters in SIBm. The UE determines whether it can access the cell according to one of the following criteria:

[0283] Rule 1: A UE may access a cell if it meets all of the following conditions; otherwise, the cell is considered to be off-limits to access:

[0284] 1) The UE supports a channel bandwidth from a first-class channel bandwidth set, and the maximum configurable number of PRBs corresponding to this channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and greater than or equal to the initial downlink BWP; moreover,

[0285] 2) The UE supports channel bandwidths from a first-class channel bandwidth set, and the maximum configurable number of PRBs corresponding to this channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and greater than or equal to the initial uplink BWP; moreover,

[0286] 3) If SUL is configured, the UE supports a channel bandwidth in a first-class channel bandwidth set, and the maximum number of configurable PRBs corresponding to the channel bandwidth is less than or equal to the reference SUL uplink carrier bandwidth and greater than or equal to the initial uplink BWP.

[0287] According to the above-mentioned criterion 1, the following advantages can be brought about: Since the bandwidth size of the second type of channel bandwidth supported by the UE and the minimum protection interval that it can support are uncertain, while the first type of channel bandwidth is clearly defined by the standard, and the minimum protection interval of the first type of channel bandwidth can be clearly known, the complexity of controlling adjacent channel interference can be reduced by restricting whether the UE can access the cell through criterion 1.

[0288] Guideline 2: A UE may access a cell if it meets all of the following conditions; otherwise, the cell is considered to be off-limits to access:

[0289] 1) The UE supports a channel bandwidth from a set of Category 1 or Category 2 channel bandwidths, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and greater than or equal to the initial downlink BWP; moreover,

[0290] 2) The UE supports a channel bandwidth within a Category 1 or Category 2 channel bandwidth set, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and greater than or equal to the initial uplink BWP; moreover,

[0291] 3) If SUL is configured, the UE supports a channel bandwidth in a set of Category 1 or Category 2 channel bandwidths, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the uplink carrier bandwidth of the reference SUL, and greater than or equal to the initial uplink BWP on the SUL.

[0292] According to the above-mentioned criterion 2, the following advantages can be brought about: Compared with criterion 1, the judgment of the second type of channel bandwidth is added to the above bandwidth restriction conditions. In this way, if the second type of channel bandwidth supported by the UE meets the bandwidth restriction conditions, it can access the cell. The second type of channel bandwidth is a flexible channel bandwidth. Therefore, criterion 2 can increase the flexibility of UE implementation and spectrum management.

[0293] Guideline 3: A UE may access a cell if it meets all of the following conditions; otherwise, the cell is considered to be off-limits to access:

[0294] 1) The UE supports a channel bandwidth from a set of Category 1 or Category 2 channel bandwidths, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and greater than or equal to the initial downlink BWP; moreover,

[0295] 2) The UE supports channel bandwidths within a first-class channel bandwidth set, and the maximum configurable number of PRBs corresponding to this channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and greater than or equal to the initial uplink BWP; moreover,

[0296] 3) If SUL is configured, the channel bandwidth in a first-class channel bandwidth set supported by the UE, and the maximum number of configurable PRBs corresponding to the channel bandwidth is less than or equal to the uplink carrier bandwidth of the reference SUL, and greater than or equal to the initial uplink BWP on the SUL.

[0297] According to the aforementioned criterion 3, the following advantages can be achieved: Compared to criterion 1, if the bandwidth of a Type II channel supported by the UE meets the downlink bandwidth limit, it can access the cell. This increases the flexibility of UE implementation and spectrum management. Simultaneously, because the base station has strong radio frequency capabilities, it can effectively control adjacent channel interference. Furthermore, for uplink carrier condition judgment, the bandwidth of a Type I channel supported by the UE is required to meet the bandwidth limit. Using criterion 3 to restrict whether the UE accesses the cell can reduce the complexity of controlling adjacent channel interference.

[0298] Guideline 4: A UE may access a cell if it meets all of the following conditions; otherwise, the cell is considered off-limits to access:

[0299] 1) The UE supports a channel bandwidth from a first-class channel bandwidth set, and the maximum configurable number of PRBs corresponding to this channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and greater than or equal to the initial downlink BWP; moreover,

[0300] 2) The UE supports a channel bandwidth within a first-class channel bandwidth set, and the maximum configurable number of PRBs corresponding to this channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and greater than or equal to the initial uplink BWP; moreover,

[0301] 3) If SUL is configured, the UE supports a channel bandwidth in a set of Category 1 or Category 2 channel bandwidths, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the uplink carrier bandwidth of the reference SUL, and greater than or equal to the initial uplink BWP on the SUL.

[0302] According to the above-mentioned criterion 4, the following advantages can be achieved: On downlink and uplink carriers, since the judgment is made based on the first type of channel bandwidth, the advantages of criterion 1 are retained, namely, the complexity of controlling adjacent channel interference can be reduced. On SUL carriers, the judgment of the second type of channel bandwidth is added. Thus, if the UE supports a second type of channel bandwidth that meets the bandwidth limit condition, it can access the cell, which is conducive to increasing the flexibility of UE implementation and spectrum management.

[0303] Guideline 5: A UE may access a cell if it meets all of the following conditions; otherwise, the cell is considered off-limits to access:

[0304] 1) The UE supports a channel bandwidth from a set of Category 1 or Category 2 channel bandwidths, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the reference downlink carrier bandwidth, and greater than or equal to the initial downlink BWP; moreover,

[0305] 2) The UE supports channel bandwidths from a first-class channel bandwidth set, and the maximum configurable number of PRBs corresponding to this channel bandwidth is less than or equal to the reference uplink carrier bandwidth, and greater than or equal to the initial uplink BWP; moreover,

[0306] 3) If SUL is configured, the UE supports a channel bandwidth in a set of Category 1 or Category 2 channel bandwidths, and the maximum number of PRBs that can be supported on that channel bandwidth is less than or equal to the uplink carrier bandwidth of the reference SUL, and greater than or equal to the initial uplink BWP on the SUL.

[0307] According to the above-mentioned criterion 5, the following advantages can be achieved: On downlink and uplink carriers, since the judgment is made based on the first type of channel bandwidth, the advantages of criterion 1 are retained, namely, the complexity of controlling adjacent channel interference can be reduced. On downlink and SUL carriers, the judgment of the second type of channel bandwidth is added. Thus, if the UE supports a second type of channel bandwidth that meets the bandwidth limit condition, it can access the cell, which helps to increase the flexibility of UE implementation and spectrum management.

[0308] Guideline 6: A UE may access a cell if it meets all of the following conditions; otherwise, the cell is considered off-limits to access:

[0309] 1) The UE determines the access cell based on at least one of criteria 1 to 5; and,

[0310] 2) The SIBm indicates the first downlink carrier bandwidth and the first uplink carrier bandwidth, and the indicated first downlink carrier bandwidth / first uplink carrier bandwidth belongs to the first type of channel bandwidth set or the second type of channel bandwidth set supported by the UE.

[0311] According to the above-mentioned criterion 6, the following advantages can be obtained: According to the above-mentioned bandwidth limitation condition 2, if the carrier bandwidth indicated in SIBm does not belong to the first type of channel bandwidth or the second type of channel bandwidth, that is, the UE may not support this channel bandwidth. Through this preparation, UEs that do not support this carrier bandwidth can be prevented from accessing the cell.

[0312] It should be noted that criteria 1 to 5 are derived from a combination of multiple criteria under the first criterion, and criterion 6 is derived from a combination of the first and second criteria.

[0313] Example 2: Multi-carrier scenario.

[0314] For a multi-carrier cell, SSB and CRS-SIBm can be transmitted on the same carrier, or they can be transmitted on different carriers. CRS-SIBm refers to the control resource set used to schedule the broadcast message SIBm that the UE must receive. Thus, after receiving CRS-SIBm, the UE can search for control information to schedule SIBm within this control resource set. For example, SIBm can be SIB1, and CRS-SIBm can be CORESET#0.

[0315] Specifically, for SSB and CRS-SIBm to be transmitted on the same carrier, the initial BWP configured in SIBm includes CRS-SIBm, and SIBm and CRS-SIBm are located on the same carrier. This allows the UE to receive SSB and SIBm on the same carrier, thereby reducing the carrier switching when the UE receives SSB and SIBm and improving the initial access speed of the UE to the cell.

[0316] If the SSB and CRS-SIBm are located on different carriers, and the initial BWP configured for SIBm includes CRS-SIBm, and SIBm and CRS-SIBm are located on the same carrier, then in this scenario, the SSB should directly or indirectly indicate the frequency domain location of CRS-SIBm.

[0317] For example, the frequency domain location of CRS-SIBm can be indicated by one of the following methods:

[0318] Method 1: A predefined association exists between the carrier where the SSB is located and the carrier of CRS-SIBm. The UE determines the carrier position of CRS-SIBm based on this predefined association. In this case, the SSB further indicates the starting frequency offset of CRS-SIBm relative to the carrier where CRS-SIBm is located, as well as the time-domain position of CRS-SIBm, so that the UE can uniquely determine the frequency position of CRS-SIBm.

[0319] Method 2: The SSB can send a System Broadcast Message (MIB). The MIB indicates the offset of the frequency domain starting point of CRS-SIBm relative to the SSB, and the value of this offset is greater than the number of PRBs on the carrier in which the SSB is located. The MIB also indicates the time domain position of CRS-SIBm.

[0320] Furthermore, the UE can access the cell and obtain multiple carrier configurations in the following manner:

[0321] S1. The UE reads SIBm to determine the initial downlink BWP, initial uplink BWP, reference downlink carrier bandwidth, and reference uplink carrier bandwidth. Then, it determines whether to access the cell based on one of the criteria in the single-carrier scenario mentioned above.

[0322] S2. The UE reports at least one of the following: the second type of channel bandwidth it supports, the maximum number of PRBs it can support under each second type of channel bandwidth, and the minimum guard interval under each second type of channel bandwidth.

[0323] S3. The UE receives configuration information from the base station and obtains one or more first downlink carriers and / or one or more first uplink carriers configured for the UE from the configuration information. The configuration information may also include BWP configurations on the one or more first downlink carriers and / or BWP configurations on the one or more first uplink carriers. The bandwidth of the one or more carriers may be the second type channel bandwidth reported by the UE. Alternatively, the UE reselects a cell according to the base station's instructions.

[0324] According to the above method, the base station can configure the corresponding carrier for the UE based on the UE's bandwidth capability, without the base station needing to broadcast all the carriers it supports, which helps to reduce the load of broadcast messages.

[0325] Alternatively, the UE can access the cell and obtain multiple carrier configurations in the following ways:

[0326] S4. The UE reads SIBm to determine the initial downlink BWP, initial uplink BWP, reference downlink carrier bandwidth, and reference uplink carrier bandwidth. Then, it determines whether to access the cell based on one of the criteria in the single-carrier scenario.

[0327] S5. The UE further receives broadcast messages from the base station, which include the location and bandwidth of one or more carriers contained in the cell. The broadcast message can be SIBm or other broadcast messages.

[0328] S6. For one or more carriers in the acquired broadcast message, the UE reports the carriers it supports. If the UE does not support any of the carriers, the UE may indicate this in the reported information, or directly send a cell reselection request.

[0329] S7. The UE receives configuration information from the base station and obtains one or more first downlink carriers and / or first uplink carriers configured for the UE from the configuration information. The configuration information may also include BWP configurations for the one or more first downlink carriers and / or BWP configurations on the one or more first uplink carriers. Alternatively, the UE reselects a cell according to the instructions of the base station.

[0330] Among the one or more first downlink carriers configured by the base station for the UE, there may be one or more second downlink carriers whose bandwidth is less than the bandwidth of the control information resource set. For the one or more second downlink carriers, the UE does not need to support the detection of control information on the second downlink carrier, but it needs to support the reception of downlink data channels.

[0331] Among the one or more first uplink carriers configured by the base station for the UE, there may be one or more second uplink carriers with bandwidths less than the minimum PRACH bandwidth. For the one or more second uplink carriers, the UE does not need to support PRACH transmission on the second uplink carrier, but it needs to support uplink data channel transmission.

[0332] According to the above method, the UE does not need to report all the carriers it supports, which helps to reduce the amount of information that the UE needs to report.

[0333] This application provides a wireless communication method that enables UEs with flexible bandwidth to effectively access cells for communication.

[0334] 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.

[0335] It should also be understood that, in the various method embodiments of this application, the order of the above-mentioned processes 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.

[0336] Figure 9 is a schematic diagram of the structural composition of a terminal device 900 provided in an embodiment of this application. As shown in Figure 9, the terminal device 900 includes:

[0337] The first communication unit 901 is configured to communicate with network devices based on supported first-type channel bandwidth and / or second-type channel bandwidth.

[0338] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0339] In some embodiments, the first communication unit is further configured to receive first information sent by the network device, the first information being used to determine, in conjunction with the first type of channel bandwidth and / or the second type of channel bandwidth, whether the terminal device is allowed to access the first cell.

[0340] In some embodiments, the first information includes one or more of the following:

[0341] First configuration information, the first configuration information is used to determine whether the terminal device is allowed to access the first cell with a first criterion, the first criterion being related to the maximum transmission bandwidth configurable by the first type of channel bandwidth and / or the second type of channel bandwidth;

[0342] The second configuration information is used to determine, in conjunction with a second criterion, whether the terminal device is allowed to access the first cell, wherein the second criterion is related to the first type of channel bandwidth and / or the second type of channel bandwidth.

[0343] In some embodiments, the bandwidth of the first type of channel and / or the maximum configurable transmission bandwidth of the second type of channel is represented based on the number of physical resource blocks (PRBs).

[0344] In some embodiments, the first configuration information includes one or more of the following:

[0345] Reference downlink carrier bandwidth and initial downlink bandwidth portion of BWP;

[0346] Refer to the uplink carrier bandwidth and initial uplink BWP.

[0347] In some embodiments, one or more of the following are represented based on the number of PRBs:

[0348] The reference downlink carrier bandwidth;

[0349] The initial downlink BWP;

[0350] The reference uplink carrier bandwidth;

[0351] The initial uplink BWP.

[0352] In some embodiments, the first criterion includes one or more of the following:

[0353] The maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth and greater than or equal to the initial downlink BWP. The first channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the first channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0354] The maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth and greater than or equal to the initial uplink BWP. The second channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the second channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0355] In some embodiments, the first configuration information further includes:

[0356] Please refer to the supplementary uplink SUL carrier bandwidth;

[0357] SUL initial uplink BWP.

[0358] In some embodiments, the reference supplemental uplink SUL carrier bandwidth and / or the SUL initial uplink BWP are represented based on the number of PRBs.

[0359] In some embodiments, the first criterion further includes:

[0360] The maximum transmission bandwidth of the third channel bandwidth is less than or equal to the reference supplementary uplink SUL carrier bandwidth, and greater than or equal to the SUL initial uplink BWP. The third channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the third channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0361] In some embodiments, the second configuration information includes:

[0362] First uplink carrier bandwidth and / or first downlink carrier bandwidth.

[0363] In some embodiments, the second criterion includes:

[0364] The first uplink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device; and / or

[0365] The first downlink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0366] In some embodiments, the first information is carried in a System Information Block (SIB).

[0367] In some embodiments, the first cell is a single-carrier cell; the single-carrier cell includes a downlink carrier and an uplink carrier.

[0368] In some embodiments, the single-carrier cell includes a SUL carrier.

[0369] In some embodiments, the first cell is a multi-carrier cell; the multi-carrier cell includes multiple downlink carriers and / or one or more uplink carriers.

[0370] In some embodiments, the multicarrier cell includes one or more SUL carriers.

[0371] In some embodiments, the synchronization signal (SSB) and the first control resource set (CRS-SIBm) are carried on the same carrier or different carriers, the first control resource set being used to schedule the transmission of the SIB.

[0372] In some embodiments, the initial downlink BWP of the SIB configuration includes the first control resource set, and the SIB is located on the carrier where the first control resource set is located.

[0373] In some embodiments, where the synchronization signal (SSB) and the first control resource set (CRS-SIBm) are carried on different carriers, the first carrier and the second carrier are associated; the first carrier is used to carry the synchronization signal, and the second carrier is used to carry the first control resource set.

[0374] In some embodiments, the synchronization signal includes:

[0375] First offset information; the first offset information is used to indicate a first frequency offset of the first control resource set relative to the starting position of the second carrier.

[0376] In some embodiments, the synchronization signal includes:

[0377] Second offset information; the second offset information is used to indicate a second frequency offset of the frequency domain starting position of the first control resource set relative to the synchronization signal; the second frequency offset is greater than the bandwidth of the first carrier.

[0378] In some embodiments, the synchronization signal includes:

[0379] The second information is used to indicate the temporal location of the first control resource set.

[0380] In some embodiments, the first communication unit is further configured to receive third information sent by the network device; the third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, or the third information is used to instruct the terminal device to perform cell reselection, wherein the first uplink carrier and the first downlink carrier are carriers configured by the terminal device.

[0381] In some embodiments, the third information further includes one or more of the following:

[0382] BWP configuration on the first uplink carrier;

[0383] BWP configuration on the first downlink carrier.

[0384] In some embodiments, the first communication unit is further configured to send fourth information to the network device, the fourth information being used to indicate one or more fourth channel bandwidths supported by the terminal device, the fourth channel bandwidth being either the first type of channel bandwidth or the second type of channel bandwidth; the third information is related to the fourth information.

[0385] In some embodiments, the fourth information further includes one or more of the following:

[0386] The maximum number of PRBs in the fourth channel bandwidth;

[0387] The minimum protection interval of the fourth channel bandwidth.

[0388] In some embodiments, the first communication unit is further configured to receive fifth information from the network device; the fifth information is used to indicate one or more carriers included in the first cell, and the fourth information is related to the fifth information.

[0389] In some embodiments, the one or more first downlink carriers include one or more second downlink carriers, the bandwidth of which is less than the bandwidth of the first control resource set.

[0390] In some embodiments, the one or more first uplink carriers include one or more second uplink carriers, the bandwidth of which is less than the minimum bandwidth of the Physical Random Access Channel (PRACH).

[0391] Those skilled in the art should understand that the description of the network device in the embodiments of this application can be understood with reference to the description of the signal transmission method in the embodiments of this application.

[0392] Figure 10 is a schematic diagram of the structure of a network device 1000 provided in an embodiment of this application. As shown in Figure 10, the network device 1000 includes:

[0393] The second communication unit 1001 is configured to communicate with the terminal device based on the first type of channel bandwidth and / or the second type of channel bandwidth supported by the terminal device.

[0394] The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

[0395] In some embodiments, the second communication unit is further configured to send first information to the terminal device, the first information being used to determine, in conjunction with the first type of channel bandwidth and / or the second type of channel bandwidth, whether the terminal device is allowed to access the first cell.

[0396] In some embodiments, the first information includes one or more of the following:

[0397] First configuration information, the first configuration information is used to determine whether the terminal device is allowed to access the first cell with a first criterion, the first criterion being related to the maximum transmission bandwidth configurable by the first type of channel bandwidth and / or the second type of channel bandwidth;

[0398] The second configuration information is used to determine, in conjunction with a second criterion, whether the terminal device is allowed to access the first cell, wherein the second criterion is related to the first type of channel bandwidth and / or the second type of channel bandwidth.

[0399] In some embodiments, the bandwidth of the first type of channel and / or the maximum configurable transmission bandwidth of the second type of channel are represented based on the number of physical resource blocks (PRBs).

[0400] In some embodiments, the first configuration information includes one or more of the following:

[0401] Reference downlink carrier bandwidth and initial downlink bandwidth portion of BWP;

[0402] Refer to the uplink carrier bandwidth and initial uplink BWP.

[0403] In some embodiments, one or more of the following are represented based on the number of PRBs:

[0404] The reference downlink carrier bandwidth;

[0405] The initial downlink BWP;

[0406] The reference uplink carrier bandwidth;

[0407] The initial uplink BWP.

[0408] In some embodiments, the first criterion includes one or more of the following:

[0409] The maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth and greater than or equal to the initial downlink BWP. The first channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the first channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0410] The maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth and greater than or equal to the initial uplink BWP. The second channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the second channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0411] In some embodiments, the first configuration information further includes:

[0412] Please refer to the supplementary uplink SUL carrier bandwidth;

[0413] SUL initial uplink BWP.

[0414] In some embodiments, the reference supplementary uplink SUL carrier bandwidth and / or the SUL initial uplink BWP are represented based on the number of PRBs.

[0415] In some embodiments, the first criterion further includes:

[0416] The maximum transmission bandwidth of the third channel bandwidth is less than or equal to the reference supplementary uplink SUL carrier bandwidth, and greater than or equal to the SUL initial uplink BWP. The third channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the third channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0417] In some embodiments, the second configuration information includes:

[0418] First uplink carrier bandwidth and / or first downlink carrier bandwidth.

[0419] In some embodiments, the second criterion includes:

[0420] The first uplink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device; and / or

[0421] The first downlink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

[0422] In some embodiments, the first information is carried in a System Information Block (SIB).

[0423] In some embodiments, the first cell is a single-carrier cell; the single-carrier cell includes a downlink carrier and an uplink carrier.

[0424] In some embodiments, the single-carrier cell includes a SUL carrier.

[0425] In some embodiments, the first cell is a multi-carrier cell; the multi-carrier cell includes multiple downlink carriers and / or one or more uplink carriers.

[0426] In some embodiments, the multicarrier cell includes one or more SUL carriers.

[0427] In some embodiments, the synchronization signal (SSB) and the first control resource set (CRS-SIBm) are carried on the same carrier or different carriers, the first control resource set being used to schedule the transmission of the SIB.

[0428] In some embodiments, the initial downlink BWP of the SIB configuration includes the first control resource set, and the SIB is located on the carrier where the first control resource set is located.

[0429] In some embodiments, where the synchronization signal (SSB) and the first control resource set (CRS-SIBm) are carried on different carriers, the first carrier and the second carrier are associated; the first carrier is used to carry the synchronization signal, and the second carrier is used to carry the first control resource set.

[0430] In some embodiments, the synchronization signal includes:

[0431] First offset information; the first offset information is used to indicate a first frequency offset of the first control resource set relative to the starting position of the second carrier.

[0432] In some embodiments, the synchronization signal includes:

[0433] Second offset information; the second offset information is used to indicate a second frequency offset of the frequency domain starting position of the first control resource set relative to the synchronization signal; the second frequency offset is greater than the bandwidth of the first carrier.

[0434] In some embodiments, the synchronization signal includes:

[0435] The second information is used to indicate the temporal location of the first control resource set.

[0436] In some embodiments, the second communication unit is further configured to send third information to the terminal device; the third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, or the third information is used to instruct the terminal device to perform cell reselection, wherein the first uplink carriers and the first downlink carriers are carriers configured by the terminal device.

[0437] In some embodiments, the third information further includes one or more of the following:

[0438] BWP configuration on the first uplink carrier;

[0439] BWP configuration on the first downlink carrier.

[0440] In some embodiments, the second communication unit is further configured to receive fourth information sent by the terminal device, the fourth information being used to indicate one or more fourth channel bandwidths supported by the terminal device, the fourth channel bandwidth being either the first type of channel bandwidth or the second type of channel bandwidth; the third information is related to the fourth information.

[0441] In some embodiments, the fourth information further includes one or more of the following:

[0442] The maximum number of PRBs in the fourth channel bandwidth;

[0443] The minimum protection interval of the fourth channel bandwidth.

[0444] In some embodiments, the second communication unit is further configured to send fifth information to the terminal device; the fifth information is used to indicate one or more carriers included in the first cell, and the fourth information is related to the fifth information.

[0445] In some embodiments, the one or more first downlink carriers include one or more second downlink carriers, the bandwidth of the second downlink carrier being less than the bandwidth of the first control resource set.

[0446] In some embodiments, the one or more first uplink carriers include one or more second uplink carriers, the bandwidth of which is less than the minimum bandwidth of the Physical Random Access Channel (PRACH).

[0447] The description of the terminal device in the embodiments of this application can be understood by referring to the description of the signal receiving method in the embodiments of this application.

[0448] Figure 11 is a schematic structural diagram of a communication device 1100 provided in an embodiment of this application. This communication device can be a terminal device or a network device. The communication device 1100 shown in Figure 11 includes a processor 1110, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0449] Optionally, as shown in FIG11, the communication device 1100 may further include a memory 1120. The processor 1110 may retrieve and run computer programs from the memory 1120 to implement the methods described in the embodiments of this application.

[0450] The memory 1120 can be a separate device independent of the processor 1110, or it can be integrated into the processor 1110.

[0451] Optionally, as shown in FIG11, the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0452] The transceiver 1130 may include a transmitter and a receiver. The transceiver 1130 may further include an antenna, and the number of antennas may be one or more.

[0453] Optionally, the communication device 1100 may specifically be a network device in the embodiments of this application, and the communication device 1100 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.

[0454] Optionally, the communication device 1100 may specifically be a terminal device in the embodiments of this application, and the communication device 1100 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.

[0455] Figure 12 is a schematic structural diagram of a chip according to an embodiment of this application. The chip 1200 shown in Figure 12 includes a processor 1210, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0456] Optionally, as shown in FIG12, chip 1200 may further include memory 1220. Processor 1210 may retrieve and run computer programs from memory 1220 to implement the methods in the embodiments of this application.

[0457] The memory 1220 can be a separate device independent of the processor 1210, or it can be integrated into the processor 1210.

[0458] Optionally, the chip 1200 may also include an input interface 1230. The processor 1210 can control the input interface 1230 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0459] Optionally, the chip 1200 may also include an output interface 1240. The processor 1210 can control the output 1240 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0460] 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.

[0461] 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.

[0462] 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.

[0463] Figure 13 is a schematic block diagram of a communication system 1300 provided in an embodiment of this application. As shown in Figure 13, the communication system 1300 includes a terminal device 1310 and a network device 1320.

[0464] The network device can be used to implement the corresponding functions implemented by the network device in the above method, and the terminal device can be used to implement the corresponding functions implemented by the terminal device in the above method. For the sake of brevity, these will not be elaborated further here.

[0465] 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.

[0466] 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.

[0467] 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.

[0468] This application also provides a computer-readable storage medium for storing computer programs.

[0469] 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.

[0470] 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.

[0471] This application also provides a computer program product, including computer program instructions.

[0472] 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.

[0473] 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.

[0474] This application also provides a computer program.

[0475] 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.

[0476] 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.

[0477] 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.

[0478] 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.

[0479] 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.

[0480] 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.

[0481] 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.

[0482] 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.

[0483] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireless communication method, the method comprising: The terminal device communicates with the network device based on the supported Type I channel bandwidth and / or Type II channel bandwidth; The bandwidth of the first type of channel is predefined; The bandwidth of the second type of channel is different from that of the first type of channel.

2. The method based on claim 1, wherein, The method includes: The terminal device receives first information sent by the network device, the first information being used to determine whether the terminal device is allowed to access the first cell, based on the first type of channel bandwidth and / or the second type of channel bandwidth.

3. The method based on claim 2, wherein, The first information includes one or more of the following: First configuration information, the first configuration information is used to determine whether the terminal device is allowed to access the first cell with a first criterion, the first criterion being related to the maximum transmission bandwidth configurable by the first type of channel bandwidth and / or the second type of channel bandwidth; The second configuration information is used to determine, in conjunction with a second criterion, whether the terminal device is allowed to access the first cell, wherein the second criterion is related to the first type of channel bandwidth and / or the second type of channel bandwidth.

4. The method based on claim 3, wherein, The bandwidth of the first type of channel and / or the maximum configurable transmission bandwidth of the second type of channel are represented based on the number of physical resource blocks (PRBs).

5. The method based on claim 3, wherein, The first configuration information includes one or more of the following: Reference downlink carrier bandwidth and initial downlink bandwidth portion of BWP; Refer to the uplink carrier bandwidth and initial uplink BWP.

6. The method based on claim 5, wherein, One or more of the following are represented based on the number of PRBs: The reference downlink carrier bandwidth; The initial downlink BWP; The reference uplink carrier bandwidth; The initial uplink BWP.

7. The method based on claim 5 or 6, wherein, The first criterion includes one or more of the following: The maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth and greater than or equal to the initial downlink BWP. The first channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the first channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device. The maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth and greater than or equal to the initial uplink BWP. The second channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the second channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

8. The method based on any one of claims 3 to 7, wherein, The first configuration information also includes: Please refer to the supplementary uplink SUL carrier bandwidth; SUL initial uplink BWP.

9. The method based on claim 8, wherein, The reference supplementary uplink SUL carrier bandwidth and / or the SUL initial uplink BWP are represented based on the number of PRBs.

10. The method based on claim 8, wherein, The first criterion also includes: The maximum transmission bandwidth of the third channel bandwidth is less than or equal to the reference supplementary uplink SUL carrier bandwidth, and greater than or equal to the SUL initial uplink BWP. The third channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the third channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

11. The method based on any one of claims 3 to 10, wherein, The second configuration information includes: First uplink carrier bandwidth and / or first downlink carrier bandwidth.

12. The method based on claim 11, wherein, The second criterion includes: The first uplink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device; and / or The first downlink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

13. The method based on any one of claims 2 to 12, wherein, The first information is carried in the System Information Block (SIB).

14. The method based on any one of claims 2 to 13, wherein, The first cell is a single-carrier cell; the single-carrier cell includes one downlink carrier and one uplink carrier.

15. The method of claim 14, wherein the single-carrier cell comprises a SUL carrier.

16. The method based on any one of claims 2 to 13, wherein, The first cell is a multi-carrier cell; the multi-carrier cell includes multiple downlink carriers and / or one or more uplink carriers.

17. The method based on claim 16, wherein, The multi-carrier cell includes one or more SUL carriers.

18. The method based on claim 16 or 17, wherein, The synchronization signal and the first control resource set are carried on the same carrier or different carriers, and the first control resource set is used to schedule the transmission of SIB.

19. The method based on claim 18, wherein, The initial downlink BWP of the SIB configuration includes the first control resource set, and the SIB is located on the carrier where the first control resource set is located.

20. The method based on claim 18 or 19, wherein, When the synchronization signal and the first control resource set are carried on different carriers, the first carrier and the second carrier are associated; the first carrier is used to carry the synchronization signal, and the second carrier is used to carry the first control resource set.

21. The method based on claim 20, wherein, The synchronization signal includes: First offset information; the first offset information is used to indicate a first frequency offset of the first control resource set relative to the starting position of the second carrier.

22. The method based on claim 20, wherein, The synchronization signal includes: Second offset information; the second offset information is used to indicate a second frequency offset of the frequency domain starting position of the first control resource set relative to the synchronization signal; the second frequency offset is greater than the bandwidth of the first carrier.

23. The method based on any one of claims 18 to 22, wherein, The synchronization signal includes: The second information is used to indicate the temporal location of the first control resource set.

24. The method based on any one of claims 1 to 23, wherein, The method includes: The terminal device receives third information sent by the network device; the third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, or the third information is used to instruct the terminal device to perform cell reselection, wherein the first uplink carrier and the first downlink carrier are carriers configured by the terminal device.

25. The method based on claim 24, wherein, The third information also includes one or more of the following: BWP configuration on the first uplink carrier; BWP configuration on the first downlink carrier.

26. The method based on claim 24 or 25, wherein, The method includes: The terminal device sends fourth information to the network device, the fourth information indicating one or more fourth channel bandwidths supported by the terminal device, the fourth channel bandwidth being either the first type of channel bandwidth or the second type of channel bandwidth; the third information is related to the fourth information.

27. The method based on claim 26, wherein, The fourth information also includes one or more of the following: The maximum number of PRBs in the fourth channel bandwidth; The minimum protection interval of the fourth channel bandwidth.

28. The method based on claim 26 or 27, wherein, The method further includes: The terminal device receives the fifth information from the network device; the fifth information is used to indicate one or more carriers included in the first cell, and the fourth information is related to the fifth information.

29. The method based on claim 24 or 25, wherein, The one or more first downlink carriers include one or more second downlink carriers, the bandwidth of the second downlink carriers being less than the bandwidth of the first control resource set.

30. The method based on claim 24 or 25, wherein, The one or more first uplink carriers include one or more second uplink carriers, the bandwidth of which is less than the minimum bandwidth of the Physical Random Access Channel (PRACH).

31. A wireless communication method, the method comprising: The network device communicates with the terminal device based on the first type of channel bandwidth and / or the second type of channel bandwidth supported by the terminal device; The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

32. The method based on claim 31, wherein, The method includes: The network device sends first information to the terminal device, the first information being used to determine whether the terminal device is allowed to access the first cell, based on the first type of channel bandwidth and / or the second type of channel bandwidth.

33. The method based on claim 32, wherein, The first information includes one or more of the following: First configuration information, the first configuration information is used to determine whether the terminal device is allowed to access the first cell with a first criterion, the first criterion being related to the maximum transmission bandwidth configurable by the first type of channel bandwidth and / or the second type of channel bandwidth; The second configuration information is used to determine, in conjunction with a second criterion, whether the terminal device is allowed to access the first cell, wherein the second criterion is related to the first type of channel bandwidth and / or the second type of channel bandwidth.

34. The method based on claim 33, wherein, The bandwidth of the first type of channel and / or the maximum configurable transmission bandwidth of the second type of channel are represented based on the number of physical resource blocks (PRBs).

35. The method based on claim 33, wherein, The first configuration information includes one or more of the following: Reference downlink carrier bandwidth and initial downlink bandwidth portion of BWP; Refer to the uplink carrier bandwidth and initial uplink BWP.

36. The method based on claim 35, wherein, One or more of the following are represented based on the number of PRBs: The reference downlink carrier bandwidth; The initial downlink BWP; The reference uplink carrier bandwidth; The initial uplink BWP.

37. The method based on claim 35 or 36, wherein, The first criterion includes one or more of the following: The maximum transmission bandwidth of the first channel bandwidth is less than or equal to the reference downlink carrier bandwidth and greater than or equal to the initial downlink BWP. The first channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the first channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device. The maximum transmission bandwidth of the second channel bandwidth is less than or equal to the reference uplink carrier bandwidth and greater than or equal to the initial uplink BWP. The second channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the second channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

38. The method based on any one of claims 33 to 37, wherein, The first configuration information also includes: Please refer to the supplementary uplink SUL carrier bandwidth; SUL initial uplink BWP.

39. The method based on claim 38, wherein, The reference supplementary uplink SUL carrier bandwidth and / or the SUL initial uplink BWP are represented based on the number of PRBs.

40. The method based on claim 38, wherein, The first criterion also includes: The maximum transmission bandwidth of the third channel bandwidth is less than or equal to the reference supplementary uplink SUL carrier bandwidth, and greater than or equal to the SUL initial uplink BWP. The third channel bandwidth is the first type of channel bandwidth supported by the terminal device, or the third channel bandwidth is the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

41. The method based on any one of claims 33 to 40, wherein, The second configuration information includes: First uplink carrier bandwidth and / or first downlink carrier bandwidth.

42. The method based on claim 41, wherein, The second criterion includes: The first uplink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device; and / or The first downlink carrier bandwidth is either the first type of channel bandwidth or the second type of channel bandwidth supported by the terminal device.

43. The method based on any one of claims 32 to 42, wherein, The first information is carried in the System Information Block (SIB).

44. The method based on any one of claims 32 to 43, wherein, The first cell is a single-carrier cell; the single-carrier cell includes one downlink carrier and one uplink carrier.

45. The method based on claim 44, wherein, The single-carrier cell includes one SUL carrier.

46. ​​The method based on any one of claims 32 to 43, wherein, The first cell is a multi-carrier cell; the multi-carrier cell includes multiple downlink carriers and / or one or more uplink carriers.

47. The method based on claim 46, wherein, The multi-carrier cell includes one or more SUL carriers.

48. The method based on claim 46 or 47, wherein, The synchronization signal and the first control resource set are carried on the same carrier or different carriers, and the first control resource set is used to schedule the transmission of SIB.

49. The method based on claim 48, wherein, The initial downlink BWP of the SIB configuration includes the first control resource set, and the SIB is located on the carrier where the first control resource set is located.

50. The method based on claim 48 or 49, wherein, When the synchronization signal and the first control resource set are carried on different carriers, the first carrier and the second carrier are associated; the first carrier is used to carry the synchronization signal, and the second carrier is used to carry the first control resource set.

51. The method based on claim 50, wherein, The synchronization signal includes: First offset information; the first offset information is used to indicate a first frequency offset of the first control resource set relative to the starting position of the second carrier.

52. The method based on claim 50, wherein, The synchronization signal includes: Second offset information; the second offset information is used to indicate a second frequency offset of the frequency domain starting position of the first control resource set relative to the synchronization signal; the second frequency offset is greater than the bandwidth of the first carrier.

53. The method based on any one of claims 48 to 52, wherein, The synchronization signal includes: The second information is used to indicate the temporal location of the first control resource set.

54. The method based on any one of claims 31 to 53, wherein, The method includes: The network device sends third information to the terminal device; the third information is used to indicate one or more first uplink carriers and one or more first downlink carriers, or the third information is used to instruct the terminal device to perform cell reselection, wherein the first uplink carrier and the first downlink carrier are carriers configured by the terminal device.

55. The method based on claim 54, wherein, The third information also includes one or more of the following: BWP configuration on the first uplink carrier; BWP configuration on the first downlink carrier.

56. The method based on claim 54 or 55, wherein, The method includes: The network device receives fourth information sent by the terminal device, the fourth information being used to indicate one or more fourth channel bandwidths supported by the terminal device, the fourth channel bandwidth being either the first type of channel bandwidth or the second type of channel bandwidth; the third information is related to the fourth information.

57. The method based on claim 56, wherein, The fourth information also includes one or more of the following: The maximum number of PRBs in the fourth channel bandwidth; The minimum protection interval of the fourth channel bandwidth.

58. The method based on claim 56 or 57, wherein, The method further includes: The network device sends a fifth piece of information to the terminal device; the fifth piece of information is used to indicate one or more carriers contained in the first cell, and the fourth piece of information is related to the fifth piece of information.

59. The method based on claim 54 or 55, wherein, The one or more first downlink carriers include one or more second downlink carriers, the bandwidth of the second downlink carriers being less than the bandwidth of the first control resource set.

60. The method based on claim 54 or 55, wherein, The one or more first uplink carriers include one or more second uplink carriers, the bandwidth of which is less than the minimum bandwidth of the Physical Random Access Channel (PRACH).

61. A terminal device, comprising: The first communication unit is configured to communicate with network devices based on supported first-type channel bandwidth and / or second-type channel bandwidth. The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

62. A network device, comprising: The second communication unit is configured to communicate with the terminal device based on the first type of channel bandwidth and / or the second type of channel bandwidth supported by the terminal device. The bandwidth of the first type of channel is predefined; the bandwidth of the second type of channel is different from that of the first type of channel.

63. A communication device, the communication device comprising: Memory, used to store computer programs; A processor, connected to the memory, is configured to retrieve and run the computer program from the memory to implement the method of any one of claims 1 to 30, or to implement the method of any one of claims 31 to 60; A transceiver is used to receive and send information when exchanging information with other external devices.

64. A chip, the chip comprising: Memory, used to store computer programs; A processor, connected to the memory, is configured to retrieve and run a computer program from the memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 30, or to perform the method as described in any one of claims 31 to 60; A transceiver is used to receive and send information during the exchange of information with a device or chip.

65. A computer-readable storage medium storing a computer program that, when executed by at least one processor, implements the method as claimed in any one of claims 1 to 30, or implements the method as claimed in any one of claims 31 to 60.

66. A computer program product comprising a computer program or instructions which, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 30; or implement the steps of the method as claimed in any one of claims 31 to 60.

67. A computer program that, when executed, causes a computer to perform the method as claimed in any one of claims 1 to 30, or to implement the method as claimed in any one of claims 31 to 60.

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