Wireless communication method, terminal device and network device

Abstract

The embodiment of the present application provides a wireless communication method, a terminal device, and a network device, which can determine the subband where the CORESET of the RMSI is located when the SSB and the CORESET of the RMSI are in different subbands. The wireless communication method includes: the terminal device receives a first SSB in a first cell; the terminal device determines a second subband according to the first subband, wherein the first subband is the subband where the first SSB is located, and the second subband is the subband where the control resource set of the RMSI in the first cell is located.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, a terminal device, and a network device. Background Art

[0002] In the fifth generation mobile communication technology new wireless (5G NR) system, for cells where the control resource set (CORESET) of the synchronization signal block (SS / PBCH block, SSB) and the remaining minimum system information (RMSI) are in the same specific subband, the resource location of the CORESET of the RMSI in the cell system information can be determined by the SSB on the synchronization raster (SS raster) point. However, for some cells, the CORESET of the SSB and the RMSI may be in different subbands. How to determine the subband where the CORESET of the RMSI is located when the SSB and the CORESET of the RMSI are in different subbands is a problem that needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present application provide a wireless communication method, a terminal device, and a network device, which can determine the subband where the CORESET of the RMSI is located when the SSB and the CORESET of the RMSI are in different subbands.

[0004] In a first aspect, a wireless communication method is provided, the method comprising:

[0005] The terminal device receives a first SSB in a first cell;

[0006] The terminal device determines the second subband based on the first subband, wherein the first subband is the subband where the first SSB is located, and the second subband is the subband where the control resource set of the RMSI in the first cell is located.

[0007] In a second aspect, a wireless communication method is provided, the method comprising:

[0008] The terminal device receives a first SSB in a first cell, where the first SSB includes first indication information, where the first indication information is used to indicate frequency domain bandwidth information of the first cell;

[0009] The terminal device determines the frequency domain bandwidth of the first cell according to the first indication information;

[0010] The terminal device determines that the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located is the subband where the control resource set of the RMSI is located.

[0011] In a third aspect, a wireless communication method is provided, the method comprising:

[0012] The network device sends a first SSB in a first cell;

[0013] The network device determines a second subband based on a first subband, wherein the first subband is a subband where the first SSB is located, and the second subband is a subband where a control resource set of the RMSI in the first cell is located.

[0014] In a fourth aspect, a wireless communication method is provided, the method comprising:

[0015] The network device sends a first SSB in a first cell, where the first SSB includes first indication information, where the first indication information is used to indicate frequency domain bandwidth information of the first cell;

[0016] The network device determines, according to the first indication information, a frequency domain bandwidth of the first cell;

[0017] The network device determines that the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located is the subband where the control resource set of the RMSI is located.

[0018] In a fifth aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or its various implementation modes.

[0019] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0020] In a sixth aspect, a terminal device is provided for executing the method in the above second aspect or its various implementation modes.

[0021] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0022] In a seventh aspect, a network device is provided for executing the method in the third aspect or its various implementations.

[0023] Specifically, the network device includes a functional module for executing the method in the above-mentioned third aspect or its various implementation modes.

[0024] In an eighth aspect, a network device is provided for executing the method in the fourth aspect or its various implementations.

[0025] Specifically, the network device includes a functional module for executing the method in the fourth aspect or its various implementations.

[0026] In a ninth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementation manners.

[0027] In a tenth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementation manner.

[0028] In an eleventh aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the third aspect or its implementation manners.

[0029] In a twelfth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the fourth aspect or its implementations.

[0030] In the thirteenth aspect, a device is provided for implementing the method in any one of the first to fourth aspects or any of their implementations.

[0031] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes a method as described in any one of the first to fourth aspects or in each of its implementations.

[0032] In a fourteenth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute a method in any one of the first to fourth aspects or in each of its implementations.

[0033] In a fifteenth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to fourth aspects or any of its implementations.

[0034] In the sixteenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to fourth aspects or in each of its implementations.

[0035] Through the technical solution of the first aspect or the third aspect mentioned above, the subband where the control resource set of RMSI is located can be determined based on the subband where the first SSB is located. Therefore, the CORESET position of RMSI can be determined when the SSB and RMSI CORESET are in different subbands, thereby improving the flexibility of the SSB transmission position. In addition, this flexibility is also conducive to avoiding resource collisions between the control information and data information of SSB and RMSI.

[0036] Through the technical solution of the second aspect or the fourth aspect above, the frequency domain bandwidth of the first cell can be determined based on the first indication information in the first SSB, and the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located can be determined as the subband where the control resource set of the RMSI is located. Therefore, the CORESET position of the RMSI can be determined when the SSB and the CORESET of the RMSI are in different subbands, thereby improving the flexibility of the SSB transmission position. In addition, this flexibility is also conducive to avoiding resource collisions between the control information and data information of the SSB and RMSI. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0038] Figure 2 This is a schematic diagram of three positional relationships between SSB and RMSI control resource sets provided in an embodiment of the present application.

[0039] Figure 3 This is a schematic diagram of an embodiment of the present application providing that the control resource sets of SSB and RMSI are located in the same subband.

[0040] Figure 4 It is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0041] Figure 5 This is a schematic diagram of an embodiment of the present application in which the control resource sets of SSB and RMSI are located in different subbands.

[0042] Figure 6 It is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.

[0043] Figure 7 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0044] Figure 8 It is a schematic block diagram of another terminal device provided according to an embodiment of the present application.

[0045] Fig. 9It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0046] Fig.10 It is a schematic block diagram of another network device provided according to an embodiment of the present application.

[0047] Fig.11 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0048] Fig.12 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0049] Fig.13 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] The embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next generation communication system or other communication systems, etc.

[0052] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), and vehicle to vehicle (Vehicle to Vehicle, V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0053] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0054] The embodiments of the present application do not limit the spectrum to which they are applied. For example, the embodiments of the present application can be applied to licensed spectrum or unlicensed spectrum.

[0055] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0056] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0057] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0058] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0059] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0060] The embodiments of the present application describe various embodiments in combination with terminal devices and network devices, wherein: the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc. The terminal device may be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a next-generation communication system, for example, a terminal device in an NR network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0061] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0062] The network device can be a device used to communicate with a mobile device. The network device can be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evoutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, etc.

[0063] In an embodiment of the present application, a network device provides services for a cell, and a terminal device communicates with the network device through transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: a metro cell, a micro cell, a picocell, a femtocell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0064] In 5G NR, a CORESET is defined that can determine the RMSI in the cell system information through the SSB on the synchronization grid (raster) point. The RMSI here is a physical layer term, which can also be called the System Information Block (SIB) 1.

[0065] First, during the cell search process of 5G NR, the UE can determine the location of the SSB through the synchronization raster points predefined by the protocol. Then, based on the frequency domain position of the SSB deployed on the synchronization raster frequency point determined as a reference, the UE can determine the location of the CORESET of the RMSI based on the indication of a limited and specific offset.

[0066] Specifically, in 5G NR, Figure 2 As shown, the relationship between SSB and RMSI CORESET can be as follows:

[0067] Case 1 corresponds to the relationship that the CORESET of SSB and RMSI is in time division multiplexing mode (Testing Data Management, TDM);

[0068] Case 2 corresponds to the situation that the CORESET of SSB and RMSI are in a relatively fixed relationship and have no overlap in the time and frequency domains;

[0069] Case 3 corresponds to the situation that the CORESET of SSB and RMSI are in a relatively fixed relationship and are in a frequency-division multiplexing (FDM) relationship.

[0070] For the above three relationships, in 5G NR, the UE determines the location of the CORESET of the RMSI through a field in the Master Information Block (MIB) message. The field consists of 8 bits, of which 4 bits are used to determine the CORESET information and the other 4 bits are used to confirm the search space information. Figure 2 In the three cases, the UE can obtain the CORESET correspondence between SSB and RMSI in the current case, the frequency domain resource size of CORESET (number of resource blocks (RB)), the time domain resource size of CORESET (number of symbols), and the relative frequency domain offset (Offset) of SSB and RMSI CORESET. It is particularly important to note that the definition of offset here is the offset between the minimum RB number of CORESET and the RB number of the smallest common resource block (CRB) that overlaps with the first RB of SSB. In simple terms, it is the offset of RMSI CORESET relative to SSB, and the SSB here is used to define the SSB of the cell, that is, the SSB sent on the synchronous raster frequency point.

[0071] The above method of determining the resource location of the CORESET of RMSI based on the SSB on the synchronous raster point is effective in the 5G system. However, one thing needs to be explained. The premise of the method of determining the resource location of the CORESET of RMSI through the SSB on the synchronous raster point in the 5G system is that the SSB is located on the synchronous raster. That is to say, only when the UE finds an SSB on the synchronous raster frequency point can the location of the corresponding CORESET be determined based on the SSB.

[0072] The above assumptions are the design basis of 5G NR. However, in unlicensed frequency bands, due to the need to discover cells and determine the SIB information of cells on non-synchronized raster frequencies, the above assumptions and designs will no longer apply.

[0073] Since the unlicensed frequency band is a shared frequency band, different operators or companies may share the same frequency band or frequency point, and at this time, each network user will compete to use limited channel resources. A new problem that arises at this time is that if two operators A and B deploy cells ID25 (A) and ID25 (B) with the same cell ID at the same frequency, and these two cells are used as auxiliary cells, their synchronization signals or SSBs can be deployed and sent at the frequency point of the non-synchronous raster. In addition, in this case, for a certain UE, there will be a need to determine network information such as PLMN, Cell Global Identity (CGI) or global cell identification (Identity, ID) information through SIB1 or other broadcast messages, because only in this way can different operator information be distinguished, thereby avoiding cell confusion and potential misscheduling caused by different operators deploying cells with the same cell ID at the same frequency point.

[0074] A feasible solution is to constrain the frequency position of a unique synchronization grid (SS raster) in each subband. When the UE detects SSB in a subband, the UE determines the SS raster position in the subband. Then the UE uses the SS raster position or a specific position associated with the SS raster as a corresponding reference point (such as a reference SSB) and obtains the resource position of the CORESET of the RMSI based on the reference point, such as Figure 3 shown.

[0075] like Figure 3 The scheme shown assumes that the CORESET of SSB and RMSI are in the same specific subband. For example, when the subband is 20MHz, the UE can determine the unique SS raster position in the subband through the SSB position. However, for example, when a cell is 80MHz, the base station can send SSB in the first 20MHz subband and send the CORESET of RMSI in another 20MHz subband. This helps to avoid resource collision between SSB and RMSI control information and SSB and RMSI data information in one subband. In the above situation, after the UE detects an SSB, it cannot determine the resource location of the RMSI control information and data information. For example, if it determines the subband where the RMSI is located, it cannot determine the CORESET position of the RMSI.

[0076] Based on the above technical problem, the present application proposes a method for determining RMSI positions based on SSB between different sub-bands.

[0077] The following is a detailed description of the solution designed by the present application to determine the CORESET position of RMSI based on SSB between different sub-bands in response to the above technical problems.

[0078] Figure 4 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, such as Figure 4 As shown, the method 200 may include part or all of the following contents:

[0079] S210, the network device sends a first SSB in a first cell;

[0080] S220, the terminal device receives the first SSB in the first cell;

[0081] S230, the terminal device determines a second subband according to the first subband, wherein the first subband is a subband where the first SSB is located, and the second subband is a subband where a control resource set of the RMSI in the first cell is located;

[0082] S240, the network device determines a second subband based on the first subband, wherein the first subband is the subband where the first SSB is located, and the second subband is the subband where the control resource set of the RMSI in the first cell is located.

[0083] It should be noted that, in the embodiment of the present application, when the terminal device executes step S230, the network device may not necessarily execute step S240. Similarly, when the network device executes step S240, the terminal device may not necessarily execute step S230.

[0084] In the embodiment of the present application, the wireless communication method 200 can be applicable to an unlicensed frequency band or a licensed frequency band.

[0085] Optionally, in an embodiment of the present application, the first subband and the second subband are different subbands, that is, the network device sends the control resource sets of the first SSB and RMSI respectively on different subbands in the first cell.

[0086] Optionally, after determining the second subband, the terminal device may determine the location of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the location information of the reference SSB.

[0087] Similarly, after determining the second subband, the network device can determine the location of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the location information of the reference SSB.

[0088] Optionally, in an embodiment of the present application, the frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

[0089] For example, the frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

[0090] A 40MHz cell may be used as two 20MHz subbands, for example, respectively recorded as subband 0 and subband 1. A 60MHz cell may be used as three 20MHz subbands, for example, respectively recorded as subband 0, subband 1 and subband 2. A 80MHz cell may be used as four 20MHz subbands, for example, respectively recorded as subband 0, subband 1, subband 2 and subband 3.

[0091] Optionally, in an embodiment of the present application, the network device may send the first SSB on a synchronization grid or an asynchronous grid in the first cell. That is, the terminal device may receive the first SSB on a synchronization grid or an asynchronous grid in the first cell.

[0092] Further, the network device may send the first SSB at the frequency of the synchronization grid or the frequency of the non-synchronization grid in the first cell. That is, the terminal device may receive the first SSB at the frequency of the synchronization grid or the frequency of the non-synchronization grid in the first cell.

[0093] It should be noted that the network device can send the first SSB by broadcasting a system message, and the terminal device can receive the first SSB by detecting the system message.

[0094] Optionally, as Example 1, the terminal device receives first indication information sent by the network device, where the first indication information is used to indicate an offset between the second sub-band and the first sub-band.

[0095] In Example 1, the terminal device determines the second subband based on the first subband and the first indication information.

[0096] In Example 1, the network device determines the second subband according to the first subband and the first indication information.

[0097] Optionally, as Example 2, the terminal device receives first indication information sent by the network device, and the first indication information is used to indicate the offset between the subband where the first reference SSB is located and the first subband, wherein the first reference SSB and the control resource set of the RMSI are in the same subband, or there is a first correspondence between the subband where the first reference SSB is located and the second subband.

[0098] In Example 2, the terminal device determines the subband where the first reference SSB is located based on the first subband and the first indication information, and the terminal device determines the second subband based on the subband where the first reference SSB is located.

[0099] In Example 2, the network device determines the subband where the first reference SSB is located based on the first subband and the first indication information, and the network device determines the second subband based on the subband where the first reference SSB is located.

[0100] Optionally, in Example 2, the first correspondence is preconfigured, or the first correspondence is configured by the network device, or the first correspondence is indicated by the first indication information.

[0101] Optionally, as Example 3, the terminal device receives first indication information sent by the network device, and the first indication information is used to indicate the offset between the subband where the first synchronization grid is located and the first subband, wherein the first synchronization grid and the control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband.

[0102] In Example 3, the terminal device determines the subband where the first synchronization grid is located based on the first subband and the first indication information, and the terminal device determines the second subband based on the subband where the first synchronization grid is located.

[0103] In Example 3, the network device determines the subband where the first synchronization grid is located according to the first subband and the first indication information, and the network device determines the second subband according to the subband where the first synchronization grid is located.

[0104] Optionally, in Example 3, the second correspondence is preconfigured, or the second correspondence is configured by the network device, or the second correspondence is indicated by the first indication information.

[0105] Optionally, in Examples 1 to 3, the first indication information is carried in a payload of a physical broadcast channel (PBCH) in the first cell, or the first indication information is carried in a master information block (MIB) in the first cell.

[0106] Optionally, as Example 4, the terminal device receives second indication information and third indication information sent by the network device, the second indication information is used to indicate the identifier of the first sub-band, and the third indication is used to indicate the identifier of the second sub-band.

[0107] In Example 4, the terminal device determines the second subband based on the first subband, the second indication information and the third indication information.

[0108] In Example 4, the network device determines the second subband according to the first subband, the second indication information, and the third indication information.

[0109] Optionally, in Example 4, the second indication information and / or the third indication information is carried in the load of the PBCH in the first cell, or the second indication information and / or the third indication information is carried in the MIB in the first cell.

[0110] Optionally, as Example 5, the terminal device receives fourth indication information sent by the network device, where the fourth indication information is used to indicate an identifier of the first subband and an identifier of the second subband.

[0111] In Example 5, the terminal device determines the second subband based on the first subband and the fourth indication information.

[0112] In Example 5, the network device determines the second subband according to the first subband and the fourth indication information.

[0113] Optionally, in Example 5, the fourth indication information is carried in the load of the PBCH in the first cell, or the fourth indication information is carried in the MIB in the first cell.

[0114] Optionally, as Example 1, Figure 5 As shown, the frequency domain bandwidth of the first cell is 80MHz. The first cell is processed as four 20MHz sub-bands. The network device sends SSB in the first 20MHz sub-band and sends the CORESET of RMSI in the third 20MHz sub-band. The network device can indicate through the first indication information that the CORESET of RMSI is located in the third 20MHz sub-band.

[0115] For example, the first indication information is carried in the load of the PBCH in the first cell, or the first indication information is carried in the MIB in the first cell.

[0116] Optionally, in Embodiment 1, the network device may indicate the offset between the subband where the CORESET of the RMSI is located and the subband where the SSB is located through a 3-bit first indication information, as shown in Table 1. For example, in Embodiment 1, the first indication information takes a value of 101, that is, the subband where the CORESET of the RMSI is located is 2 subbands above the subband where the SSB is located.

[0117] Table 1

[0118]

[0119] In the above Table 1, -3 indicates that the subband where the SSB is located is 3 subbands below the subband where the RMSI CORESET is located, -2 indicates that the subband where the SSB is located is 2 subbands below the subband where the RMSI CORESET is located, -1 indicates that the subband where the SSB is located is 1 subband below the subband where the RMSI CORESET is located, 0 indicates that the subband where the SSB is located is the subband where the RMSI CORESET is located, 1 indicates that the subband where the SSB is located is 1 subband above the subband where the RMSI CORESET is located, 2 indicates that the subband where the SSB is located is 2 subbands above the subband where the RMSI CORESET is located, and 3 indicates that the subband where the SSB is located is 3 subbands above the subband where the RMSI CORESET is located.

[0120] It should be understood that the upward k sub-bands refer to a sub-band from a smaller frequency to a sub-band with a larger frequency, and the downward k sub-bands refer to a sub-band from a larger frequency to a sub-band with a smaller frequency.

[0121] In the above Table 1, the value of the first indication information is 111, indicating a CORESET without RMSI, that is, the network device does not send RMSI in the first cell, that is, does not send RMSI control information and data information in the first cell.

[0122] It should be noted that the correspondence between the offset between the subband where the CORESET of the RMSI and the subband where the SSB is located in the above Table 1 and the value of the first indication information is only an example. The specific correspondence can be flexibly configured according to actual needs, and this application does not limit this.

[0123] Optionally, in Embodiment 1, the network device may indicate the offset between the subband where the first reference SSB is located and the subband where the SSB is located through a 3-bit first indication information, as shown in Table 2. The first reference SSB and the control resource set of the RMSI are in the same subband, or there is a first correspondence between the subband where the first reference SSB is located and the subband where the control resource set of the RMSI is located. The terminal device determines the subband where the control resource set of the RMSI is located based on the subband where the first reference SSB is located. The network device determines the subband where the control resource set of the RMSI is located based on the subband where the first reference SSB is located. For example, in Embodiment 1, the first indication information takes a value of 101, that is, the subband where the SSB is located is 2 subbands above the subband where the first reference SSB is located. Optionally, the first correspondence is pre-configured, or the first correspondence is configured by the network device, or the first correspondence is indicated by the first indication information.

[0124] Table 2

[0125]

[0126] In the above Table 2, -3 indicates that the subband 3 subbands below the subband where the SSB is located is the subband where the first reference SSB is located, -2 indicates that the subband 2 subbands below the subband where the SSB is located is the subband where the first reference SSB is located, -1 indicates that the subband 1 subband below the subband where the SSB is located is the subband where the first reference SSB is located, 0 indicates that the subband where the SSB is located is the subband where the first reference SSB is located, 1 indicates that the subband 1 subband above the subband where the SSB is located is the subband where the first reference SSB is located, 2 indicates that the subband 2 subbands above the subband where the SSB is located is the subband where the first reference SSB is located, and 3 indicates that the subband 3 subbands above the subband where the SSB is located is the subband where the first reference SSB is located.

[0127] It should be understood that the upward k sub-bands refer to a sub-band from a smaller frequency to a sub-band with a larger frequency, and the downward k sub-bands refer to a sub-band from a larger frequency to a sub-band with a smaller frequency.

[0128] In the above Table 2, the value of the first indication information is 111, indicating a CORESET without RMSI, that is, the network device does not send RMSI in the first cell, that is, does not send RMSI control information and data information in the first cell.

[0129] It should be noted that the correspondence between the offset between the subband where the first reference SSB is located and the subband where the SSB is located in the above Table 2 and the value of the first indication information is only an example. The specific correspondence can be flexibly configured according to actual needs, and this application does not limit this.

[0130] Optionally, in Example 1, the network device may indicate the offset between the subband where the first synchronization grid is located and the subband where the SSB is located through a 3-bit first indication information, as shown in Table 3. The first synchronization grid and the control resource set of the RMSI are in the same subband, or there is a second correspondence between the subband where the first synchronization grid is located and the subband where the control resource set of the RMSI is located. The terminal device determines the subband where the control resource set of the RMSI is located based on the subband where the first synchronization grid is located. The network device determines the subband where the control resource set of the RMSI is located based on the subband where the first synchronization grid is located. For example, in Example 1, the first indication information takes a value of 101, that is, the subband where the SSB is located is 2 subbands above the subband where the first synchronization grid is located. Optionally, the second correspondence is pre-configured, or the second correspondence is configured by the network device, or the second correspondence is indicated by the first indication information.

[0131] Table 3

[0132]

[0133] In the above Table 3, 3 indicates that the subband 3 subbands below the subband where the SSB is located is the subband where the first synchronization grid is located, 2 indicates that the subband 2 subbands below the subband where the SSB is located is the subband where the first synchronization grid is located, -1 indicates that the subband 1 subband below the subband where the SSB is located is the subband where the first synchronization grid is located, 0 indicates that the subband where the SSB is located is the subband where the first synchronization grid is located, 1 indicates that the subband 1 subband above the subband where the SSB is located is the subband where the first synchronization grid is located, 2 indicates that the subband 2 subbands above the subband where the SSB is located is the subband where the first synchronization grid is located, and 3 indicates that the subband 3 subbands above the subband where the SSB is located is the subband where the first synchronization grid is located.

[0134] It should be understood that the upward k sub-bands refer to a sub-band from a smaller frequency to a sub-band with a larger frequency, and the downward k sub-bands refer to a sub-band from a larger frequency to a sub-band with a smaller frequency.

[0135] In the above Table 3, the value of the first indication information is 111, indicating a CORESET without RMSI, that is, the network device does not send RMSI in the first cell, that is, does not send RMSI control information and data information in the first cell.

[0136] It should be noted that the correspondence between the offset between the subband where the first synchronization grid is located and the subband where the SSB is located in the above Table 3 and the value of the first indication information is only an example. The specific correspondence can be flexibly configured according to actual needs, and this application does not limit this.

[0137] Optionally, as Example 2, Figure 5 As shown, the frequency domain bandwidth of the first cell is 80MHz, and the first cell is processed as 4 20MHz sub-bands. The network device sends SSB in the first 20MHz sub-band and sends the CORESET of RMSI in the third 20MHz sub-band. The network device can indicate that the CORESET of RMSI is located in the third 20MHz sub-band through the second indication information and the third indication information. Specifically, the second indication information is used to indicate the sub-band identifier where the SSB is located, and the third indication is used to indicate the sub-band identifier where the CORESET of RMSI is located.

[0138] For example, the second indication information and / or the third indication information is carried in the load of the PBCH in the first cell, or the second indication information and / or the third indication information is carried in the MIB in the first cell.

[0139] Optionally, in Embodiment 2, the network device may indicate the subband identifier of the SSB through 2-bit second indication information, as shown in Table 4, and indicate the subband identifier of the CORESET of the RMSI through 2-bit third indication information, as shown in Table 5. For example, in Embodiment 2, the second indication information takes a value of 00, that is, the subband identifier of the SSB is 0, and the third indication information takes a value of 10, that is, the subband identifier of the CORESET of the RMSI is 2. The terminal device may determine the positions of subband 1, subband 2, and subband 3 accordingly based on the information in Tables 4 and 5, when the subband identifier of the subband where the SSB is located in Table 4 is 0, combined with the subband of the SSB actually detected, as shown in Table 5. Figure 5 Then, when the third indication information indicates that the subband identifier of the subband where the CORESET of the RMSI is located is 2, the terminal device also determines the position of the subband where the CORESET of the RMSI is located.

[0140] Second instruction information The identifier of the subband where SSB is located 00 0 01 1 10 2 11 3

[0141] The third instruction information The identifier of the subband where the CORESET of RMSI is located 00 0 01 1 10 2 11 3

[0142] It should be noted that the correspondence between the identifier of the subband where the SSB is located and the value of the second indication information in the above Table 4 is only an example, and its specific correspondence can be flexibly configured according to actual needs, and this application does not limit this. And the correspondence between the identifier of the subband where the CORESET of the RMSI is located in the above Table 5 and the value of the third indication information is only an example, and its specific correspondence can be flexibly configured according to actual needs, and this application does not limit this.

[0143] Therefore, in an embodiment of the present application, the subband where the control resource set of the RMSI is located can be determined based on the subband where the first SSB is located. Thus, the CORESET position of the RMSI can be determined when the SSB and RMSI CORESET are in different subbands, thereby improving the flexibility of the SSB transmission position. In addition, this flexibility is also conducive to avoiding resource collisions between the control information and data information of the SSB and RMSI.

[0144] Figure 6 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application, such as Figure 6 As shown, the method 300 may include part or all of the following contents:

[0145] S310, the network device sends a first SSB in a first cell, where the first SSB includes first indication information, where the first indication information is used to indicate frequency domain bandwidth information of the first cell;

[0146] S320, the terminal device receives the first SSB in the first cell;

[0147] S330, the terminal device determines the frequency domain bandwidth of the first cell according to the first indication information;

[0148] S340, the terminal device determines that the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located is the subband where the control resource set of the RMSI is located;

[0149] S350, the network device determines the frequency domain bandwidth of the first cell according to the first indication information;

[0150] S360: The network device determines that the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located is the subband where the control resource set of the RMSI is located.

[0151] It should be noted that in the embodiment of the present application, when the terminal device executes steps S330 and S340, the network device may not necessarily execute steps S350 and S360. Similarly, when the network device executes steps S350 and S360, the terminal device may not necessarily execute steps S330 and S340.

[0152] In the embodiment of the present application, the wireless communication method 300 can be applicable to an unlicensed frequency band or a licensed frequency band.

[0153] Optionally, in an embodiment of the present application, the first synchronization grid is the only synchronization grid in the frequency domain bandwidth of the first cell.

[0154] Optionally, after determining the subband where the control resource set of the RMSI is located, the terminal device may determine the location of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the subband where the control resource set of the RMSI is located and the control resource set of the RMSI and the location information of the reference SSB. Alternatively, after determining the subband where the first synchronization grid is located, the terminal device may determine the location of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the subband where the first synchronization grid is located and the control resource set of the RMSI and the location information of the reference SSB.

[0155] Similarly, after determining the subband where the control resource set of the RMSI is located, the network device can determine the location of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the subband where the control resource set of the RMSI is located and the control resource set of the RMSI and the location information of the reference SSB. Alternatively, after determining the subband where the first synchronization grid is located, the network device can determine the location of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the subband where the first synchronization grid is located and the control resource set of the RMSI and the location information of the reference SSB.

[0156] Optionally, in an embodiment of the present application, the frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

[0157] For example, the frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

[0158] A 40MHz cell may be used as two 20MHz subbands, for example, respectively recorded as subband 0 and subband 1. A 60MHz cell may be used as three 20MHz subbands, for example, respectively recorded as subband 0, subband 1 and subband 2. A 80MHz cell may be used as four 20MHz subbands, for example, respectively recorded as subband 0, subband 1, subband 2 and subband 3.

[0159] Optionally, in an embodiment of the present application, the subband where the first synchronization grid is located is pre-configured, or the subband where the first synchronization grid is located is configured by a network device.

[0160] Optionally, in an embodiment of the present application, the network device may send the first SSB on a synchronization grid or an asynchronous grid in the first cell. That is, the terminal device may receive the first SSB on a synchronization grid or an asynchronous grid in the first cell.

[0161] Further, the network device may send the first SSB at the frequency of the synchronization grid or the frequency of the non-synchronization grid in the first cell. That is, the terminal device may receive the first SSB at the frequency of the synchronization grid or the frequency of the non-synchronization grid in the first cell.

[0162] It should be noted that the network device can send the first SSB by broadcasting a system message, and the terminal device can receive the first SSB by detecting the system message.

[0163] Optionally, in an embodiment of the present application, the first indication information is carried in a load of a PBCH in the first cell, or the first indication information is carried in an MIB in the first cell.

[0164] Therefore, in an embodiment of the present application, the frequency domain bandwidth of the first cell can be determined based on the first indication information in the first SSB, and the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located can be determined as the subband where the control resource set of the RMSI is located. Thus, the CORESET position of the RMSI can be determined when the SSB and RMSI CORESET are in different subbands, thereby improving the flexibility of the SSB transmission position. In addition, this flexibility is also conducive to avoiding resource collisions between the control information and data information of the SSB and RMSI.

[0165] Figure 7 FIG. 4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Figure 7 As shown, the terminal device 400 includes:

[0166] The communication unit 410 is configured to receive a first SSB in a first cell;

[0167] The processing unit 420 is used to determine the second subband based on the first subband, wherein the first subband is the subband where the first SSB is located, and the second subband is the subband where the control resource set of the RMSI in the first cell is located.

[0168] Optionally, the first sub-band and the second sub-band are different sub-bands.

[0169] Optionally, the communication unit 410 is further used to receive first indication information, where the first indication information is used to indicate an offset between the second sub-band and the first sub-band;

[0170] The processing unit 420 is specifically used for:

[0171] The second subband is determined according to the first subband and the first indication information.

[0172] Optionally, the communication unit 410 is further used to receive first indication information, where the first indication information is used to indicate an offset between a subband where a first reference SSB is located and the first subband, wherein the first reference SSB and a control resource set of the RMSI are in the same subband, or there is a first corresponding relationship between the subband where the first reference SSB is located and the second subband;

[0173] The processing unit 420 is specifically used for:

[0174] The subband where the first reference SSB is located is determined according to the first subband and the first indication information, and the second subband is determined according to the subband where the first reference SSB is located.

[0175] Optionally, the first corresponding relationship is preconfigured, or the first corresponding relationship is configured by the network device, or the first corresponding relationship is indicated by the first indication information.

[0176] Optionally, the communication unit 410 is further used to receive first indication information, where the first indication information is used to indicate an offset between a subband where a first synchronization grid is located and the first subband, wherein the first synchronization grid and the control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband;

[0177] The processing unit 420 is specifically used for:

[0178] The subband where the first synchronization grid is located is determined according to the first subband and the first indication information, and the second subband is determined according to the subband where the first synchronization grid is located.

[0179] Optionally, the second corresponding relationship is preconfigured, or the second corresponding relationship is configured by the network device, or the second corresponding relationship is indicated by the first indication information.

[0180] Optionally, the first indication information is carried in a load of a PBCH in the first cell, or the first indication information is carried in an MIB in the first cell.

[0181] Optionally, the communication unit 410 is further used to receive second indication information and third indication information, the second indication information is used to indicate the identifier of the first sub-band, and the third indication is used to indicate the identifier of the second sub-band;

[0182] The processing unit 420 is specifically used for:

[0183] The second subband is determined according to the first subband, the second indication information and the third indication information.

[0184] Optionally, the second indication information and / or the third indication information is carried in the load of the PBCH in the first cell, or the second indication information and / or the third indication information is carried in the MIB in the first cell.

[0185] Optionally, the communication unit 410 is further used to receive fourth indication information, where the fourth indication information is used to indicate an identifier of the first sub-band and an identifier of the second sub-band;

[0186] The processing unit 420 is specifically used for:

[0187] The second subband is determined according to the first subband and the fourth indication information.

[0188] Optionally, the fourth indication information is carried in the load of the PBCH in the first cell, or the fourth indication information is carried in the MIB in the first cell.

[0189] Optionally, the processing unit 420 is further used to determine the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the position information of the reference SSB.

[0190] Optionally, the frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

[0191] Optionally, the frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

[0192] Optionally, the communication unit 410 is specifically configured to:

[0193] The first SSB is received on a synchronization grid or an asynchronous grid in the first cell.

[0194] It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 400 are respectively to implement Figure 4 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0195] Figure 8 FIG. 5 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application. Figure 8 As shown, the terminal device 500 includes:

[0196] The communication unit 510 is configured to receive a first SSB in a first cell, where the first SSB includes first indication information, where the first indication information is used to indicate frequency domain bandwidth information of the first cell;

[0197] The processing unit 520 is configured to determine a frequency domain bandwidth of the first cell according to the first indication information;

[0198] The processing unit 520 is further configured to determine that the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located is the subband where the control resource set of the RMSI is located.

[0199] Optionally, the first synchronization grid is the only synchronization grid in the frequency domain bandwidth of the first cell.

[0200] Optionally, the subband where the first synchronization grid is located is preconfigured, or the subband where the first synchronization grid is located is configured by the network device.

[0201] Optionally, the first indication information is carried in a load of a PBCH in the first cell, or the first indication information is carried in an MIB in the first cell.

[0202] Optionally, the processing unit 520 is further used to determine the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the subband where the first synchronization grid is located and the control resource set of the RMSI and the position information of the reference SSB.

[0203] Optionally, the frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

[0204] Optionally, the frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

[0205] Optionally, the communication unit 510 is specifically configured to:

[0206] The first SSB is received on a synchronization grid or an asynchronous grid in the first cell.

[0207] It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 500 are respectively to implement Figure 6 For the sake of brevity, the corresponding process of the terminal device in the method 300 is not repeated here.

[0208] Fig. 9 FIG. 6 shows a schematic block diagram of a network device 600 according to an embodiment of the present application. Fig. 9 As shown, the network device 600 includes:

[0209] The communication unit 610 is configured to send a first SSB in a first cell;

[0210] The processing unit 620 is used to determine the second subband based on the first subband, wherein the first subband is the subband where the first SSB is located, and the second subband is the subband where the control resource set of the RMSI in the first cell is located.

[0211] Optionally, the first sub-band and the second sub-band are different sub-bands.

[0212] Optionally, the communication unit 610 is further used to send first indication information, where the first indication information is used to indicate an offset between the second sub-band and the first sub-band;

[0213] The processing unit 620 is specifically used for:

[0214] The second subband is determined according to the first subband and the first indication information.

[0215] Optionally, the communication unit 610 is further used to send first indication information, where the first indication information is used to indicate an offset between a subband where a first reference SSB is located and the first subband, wherein the first reference SSB and a control resource set of the RMSI are in the same subband, or there is a first corresponding relationship between the subband where the first reference SSB is located and the second subband;

[0216] The processing unit 620 is specifically used for:

[0217] The subband where the first reference SSB is located is determined according to the first subband and the first indication information, and the second subband is determined according to the subband where the first reference SSB is located.

[0218] Optionally, the first corresponding relationship is configured for the network device.

[0219] Optionally, the communication unit 610 is further used to send first indication information, where the first indication information is used to indicate an offset between a subband where a first synchronization grid is located and the first subband, wherein the first synchronization grid and the control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband;

[0220] The processing unit 620 is specifically used for:

[0221] The subband where the first synchronization grid is located is determined according to the first subband and the first indication information, and the second subband is determined according to the subband where the first synchronization grid is located.

[0222] Optionally, the second corresponding relationship is configured for the network device.

[0223] Optionally, the first indication information is carried in a load of a PBCH in the first cell, or the first indication information is carried in an MIB in the first cell.

[0224] Optionally, the communication unit 610 is further used to send second indication information and third indication information, the second indication information is used to indicate the identifier of the first sub-band, and the third indication is used to indicate the identifier of the second sub-band;

[0225] The processing unit 620 is specifically used for:

[0226] The second subband is determined according to the first subband, the second indication information and the third indication information.

[0227] Optionally, the second indication information and / or the third indication information is carried in the load of the PBCH in the first cell, or the second indication information and / or the third indication information is carried in the MIB in the first cell.

[0228] Optionally, the communication unit 610 is further used to send fourth indication information, where the fourth indication information is used to indicate an identifier of the first sub-band and an identifier of the second sub-band;

[0229] The processing unit 620 is specifically used for:

[0230] The second subband is determined according to the first subband and the fourth indication information.

[0231] Optionally, the fourth indication information is carried in the load of the PBCH in the first cell, or the fourth indication information is carried in the MIB in the first cell.

[0232] Optionally, the processing unit 620 is further used to determine the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the position information of the reference SSB.

[0233] Optionally, the frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

[0234] Optionally, the frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

[0235] Optionally, the communication unit 610 is specifically configured to:

[0236] The first SSB is sent on a synchronization grid or an asynchronous grid in the first cell.

[0237] It should be understood that the network device 600 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 600 are respectively to implement Figure 4 For the sake of brevity, the corresponding processes of the network device in the method 200 are not repeated here.

[0238] Fig.10 FIG. 7 shows a schematic block diagram of a network device 700 according to an embodiment of the present application. Fig.10 As shown, the network device 700 includes:

[0239] The communication unit 710 is configured to send a first SSB in a first cell, where the first SSB includes first indication information, where the first indication information is used to indicate frequency domain bandwidth information of the first cell;

[0240] The processing unit 720 is configured to determine a frequency domain bandwidth of the first cell according to the first indication information;

[0241] The processing unit is also used to determine that the subband where the first synchronization grid in the frequency domain bandwidth of the first cell is located is the subband where the control resource set of the RMSI is located.

[0242] Optionally, the first synchronization grid is the only synchronization grid in the frequency domain bandwidth of the first cell.

[0243] Optionally, the subband where the first synchronization grid is located is configured for the network device.

[0244] Optionally, the first indication information is carried in a load of a PBCH in the first cell, or the first indication information is carried in an MIB in the first cell.

[0245] Optionally, the processing unit 720 is further used to determine the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the subband where the first synchronization grid is located and the control resource set of the RMSI and the position information of the reference SSB.

[0246] Optionally, the frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

[0247] Optionally, the frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

[0248] Optionally, the communication unit 710 is specifically configured to:

[0249] The first SSB is sent on a synchronization grid or an asynchronous grid in the first cell.

[0250] It should be understood that the network device 700 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 700 are respectively to implement Figure 6 For the sake of brevity, the corresponding processes of the network device in the method 300 are not repeated here.

[0251] Fig.11 It is a schematic structural diagram of a communication device 800 provided in an embodiment of the present application. Fig.11 The communication device 800 shown includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0252] Alternatively, if Fig.11 As shown, the communication device 800 may further include a memory 820. The processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.

[0253] The memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .

[0254] Alternatively, if Fig.11 As shown, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0255] The transceiver 830 may include a transmitter and a receiver. The transceiver 830 may further include an antenna, and the number of the antennas may be one or more.

[0256] Optionally, the communication device 800 may specifically be a network device or a base station in an embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the network device or the base station in each method in the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0257] Optionally, the communication device 800 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0258] Fig.12 It is a schematic structural diagram of the device of an embodiment of the present application. Fig.12 The device 900 shown includes a processor 910, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0259] Alternatively, if Fig.12 As shown, the apparatus 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

[0260] The memory 920 may be a separate device independent of the processor 910 , or may be integrated into the processor 910 .

[0261] Optionally, the apparatus 900 may further include an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0262] Optionally, the apparatus 900 may further include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0263] Optionally, the device can be applied to the network equipment or base station in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment or base station in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0264] Optionally, the apparatus may be applied to a mobile terminal / terminal device in an embodiment of the present application, and the apparatus may implement corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0265] Optionally, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0266] Fig.13 1 is a schematic block diagram of a communication system 1000 provided in an embodiment of the present application. Fig.13 As shown, the communication system 1000 includes a terminal device 1010 and a network device 1020 .

[0267] Among them, the terminal device 1010 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1020 can be used to implement the corresponding functions implemented by the network device or base station in the above method. For the sake of brevity, they are not repeated here.

[0268] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0269] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as 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 RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0270] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0271] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0272] Optionally, the computer-readable storage medium can be applied to the network device or base station in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0273] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0274] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0275] Optionally, the computer program product can be applied to the network device or base station in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0276] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0277] The embodiment of the present application also provides a computer program.

[0278] Optionally, the computer program can be applied to the network device or base station in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device or base station in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0279] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0280] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0281] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0282] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0283] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0284] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0285] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0286] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives a first synchronization signal block SSB in a first cell; The terminal device determines a second subband according to the first subband, wherein the first subband is a subband where the first SSB is located, and the second subband is a subband where a control resource set of remaining minimum system information RMSI in the first cell is located; The method further comprises: The terminal device receives first indication information, where the first indication information is used to indicate an offset between a subband where a first reference SSB is located and the first subband, wherein the first reference SSB and a control resource set of the RMSI are in the same subband, or there is a first corresponding relationship between the subband where the first reference SSB is located and the second subband; The terminal device determines the second sub-band according to the first sub-band, including: The terminal device determines the subband where the first reference SSB is located according to the first subband and the first indication information, and the terminal device determines the second subband according to the subband where the first reference SSB is located; or The terminal device receives first indication information, where the first indication information is used to indicate an offset between a subband where a first synchronization grid is located and the first subband, wherein the first synchronization grid and a control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband; The terminal device determines the second sub-band according to the first sub-band, including: The terminal device determines the subband where the first synchronization grid is located according to the first subband and the first indication information, and the terminal device determines the second subband according to the subband where the first synchronization grid is located.

2. The method according to claim 1, characterized in that The first sub-band and the second sub-band are different sub-bands.

3. The method according to claim 1, characterized in that The first correspondence is preconfigured, or the first correspondence is configured by the network device, or the first correspondence is indicated by the first indication information.

4. The method according to claim 1, characterized in that: The second correspondence is pre-configured, or the second correspondence is configured by the network device, or the second correspondence is indicated by the first indication information.

5. The method according to any one of claims 1 to 4, characterized in that The first indication information is carried in a load of a physical broadcast channel PBCH in the first cell, or the first indication information is carried in a master information block MIB in the first cell.

6. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The terminal device determines the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the position information of the reference SSB.

7. The method according to any one of claims 1 to 4, characterized in that The frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

8. The method according to any one of claims 1 to 4, characterized in that The frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

9. The method according to any one of claims 1 to 4, characterized in that The terminal device receives a first SSB in a first cell, including: The terminal device receives the first SSB on a synchronization grid or an asynchronous grid in the first cell.

10. A wireless communication method, characterized in that: include: The network device sends a first synchronization signal block SSB in the first cell; The network device determines a second subband according to the first subband, wherein the first subband is a subband where the first SSB is located, and the second subband is a subband where a control resource set of remaining minimum system information RMSI in the first cell is located; The method further comprises: The network device sends first indication information, where the first indication information is used to indicate an offset between a subband where a first reference SSB is located and the first subband, wherein the first reference SSB and a control resource set of the RMSI are in the same subband, or there is a first corresponding relationship between the subband where the first reference SSB is located and the second subband; The network device determines the second sub-band according to the first sub-band, including: The network device determines the subband where the first reference SSB is located according to the first subband and the first indication information, and the network device determines the second subband according to the subband where the first reference SSB is located; or The network device sends first indication information, where the first indication information is used to indicate an offset between a subband where a first synchronization grid is located and the first subband, wherein the first synchronization grid and a control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband; The network device determines the second sub-band according to the first sub-band, including: The network device determines the subband where the first synchronization grid is located according to the first subband and the first indication information, and the network device determines the second subband according to the subband where the first synchronization grid is located.

11. The method according to claim 10, characterized in that The first sub-band and the second sub-band are different sub-bands.

12. The method according to claim 10, characterized in that The first corresponding relationship is configured by the network device.

13. The method according to claim 10, characterized in that The second corresponding relationship is configured by the network device.

14. The method according to any one of claims 10 to 13, characterized in that The first indication information is carried in a load of a physical broadcast channel PBCH in the first cell, or the first indication information is carried in a master information block MIB in the first cell.

15. The method according to any one of claims 10 to 13, characterized in that The method further comprises: The network device determines the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the position information of the reference SSB.

16. The method according to any one of claims 10 to 13, characterized in that The frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

17. The method according to any one of claims 10 to 13, characterized in that The frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

18. The method according to any one of claims 10 to 13, characterized in that The network device sends a first SSB in a first cell, including: The network device sends the first SSB on a synchronization grid or an asynchronous grid in the first cell.

19. A terminal device, characterized in that: include: A communication unit, configured to receive a first synchronization signal block SSB in a first cell; a processing unit, configured to determine a second subband according to a first subband, wherein the first subband is a subband where the first SSB is located, and the second subband is a subband where a control resource set of a remaining minimum system information RMSI in the first cell is located; The communication unit is further used to receive first indication information, where the first indication information is used to indicate an offset between a subband where a first reference SSB is located and the first subband, wherein the first reference SSB and a control resource set of the RMSI are in the same subband, or there is a first corresponding relationship between the subband where the first reference SSB is located and the second subband; The processing unit is specifically used for: Determine the subband where the first reference SSB is located according to the first subband and the first indication information, and determine the second subband according to the subband where the first reference SSB is located; or The communication unit is further used to receive first indication information, where the first indication information is used to indicate an offset between a subband where a first synchronization grid is located and the first subband, wherein the first synchronization grid and a control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband; The processing unit is specifically used for: The subband where the first synchronization grid is located is determined according to the first subband and the first indication information, and the second subband is determined according to the subband where the first synchronization grid is located.

20. The terminal device according to claim 19, characterized in that: The first sub-band and the second sub-band are different sub-bands.

21. The terminal device according to claim 19, characterized in that: The first correspondence is preconfigured, or the first correspondence is configured by the network device, or the first correspondence is indicated by the first indication information.

22. The terminal device according to claim 19, characterized in that: The second correspondence is pre-configured, or the second correspondence is configured by the network device, or the second correspondence is indicated by the first indication information.

23. The terminal device according to any one of claims 19 to 22, characterized in that: The first indication information is carried in a load of a physical broadcast channel PBCH in the first cell, or the first indication information is carried in a master information block MIB in the first cell.

24. The terminal device according to any one of claims 19 to 22, characterized in that: The processing unit is also used to determine the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the position information of the reference SSB.

25. The terminal device according to any one of claims 19 to 22, characterized in that: The frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

26. The terminal device according to any one of claims 19 to 22, characterized in that: The frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

27. The terminal device according to any one of claims 19 to 22, characterized in that: The communication unit is specifically used for: The first SSB is received on a synchronization grid or an asynchronous grid in the first cell.

28. A network device, characterized in that: include: A communication unit, configured to send a first synchronization signal block SSB in a first cell; a processing unit, configured to determine a second subband according to a first subband, wherein the first subband is a subband where the first SSB is located, and the second subband is a subband where a control resource set of a remaining minimum system information RMSI in the first cell is located; The communication unit is further used to send first indication information, where the first indication information is used to indicate an offset between a subband where a first reference SSB is located and the first subband, wherein the first reference SSB and a control resource set of the RMSI are in the same subband, or there is a first corresponding relationship between the subband where the first reference SSB is located and the second subband; The processing unit is specifically used for: Determine the subband where the first reference SSB is located according to the first subband and the first indication information, and determine the second subband according to the subband where the first reference SSB is located; or The communication unit is further used to send first indication information, where the first indication information is used to indicate an offset between a subband where a first synchronization grid is located and the first subband, wherein the first synchronization grid and a control resource set of the RMSI are in the same subband, or there is a second corresponding relationship between the subband where the first synchronization grid is located and the second subband; The processing unit is specifically used for: The subband where the first synchronization grid is located is determined according to the first subband and the first indication information, and the second subband is determined according to the subband where the first synchronization grid is located.

29. The network device according to claim 28, characterized in that: The first sub-band and the second sub-band are different sub-bands.

30. The network device according to claim 28, characterized in that The first corresponding relationship is configured by the network device.

31. The network device according to claim 28, characterized in that The second corresponding relationship is configured by the network device.

32. The network device according to any one of claims 28 to 31, characterized in that: The first indication information is carried in a load of a physical broadcast channel PBCH in the first cell, or the first indication information is carried in a master information block MIB in the first cell.

33. The network device according to any one of claims 28 to 31, characterized in that: The processing unit is also used to determine the position of the control resource set of the RMSI based on the relative frequency domain offset between the reference SSB in the second subband and the control resource set of the RMSI and the position information of the reference SSB.

34. The network device according to any one of claims 28 to 31, characterized in that: The frequency domain bandwidth of the first cell is greater than or equal to 20 MHz.

35. The network device according to any one of claims 28 to 31, characterized in that: The frequency domain bandwidth of the first cell is 40 MHz, 60 MHz or 80 MHz.

36. The network device according to any one of claims 28 to 31, characterized in that: The communication unit is specifically used for: The first SSB is sent on a synchronization grid or an asynchronous grid in the first cell.

37. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 9.

38. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 10 to 18.

39. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 9.

40. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 10 to 18.

41. A computer-readable storage medium, characterized in that Used to store a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 9.

42. A computer-readable storage medium, characterized in that: Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 10 to 18.

43. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to execute the method as claimed in any one of claims 1 to 9.

44. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to execute the method as claimed in any one of claims 10 to 18.

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