Wireless communication method, terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device and a network device. The method comprises: a terminal device receiving, by means of a first carrier, an SSB sent by a network device, wherein the first carrier comprises a plurality of frequency-domain resource parts, and first information in the SSB is configured to indicate the resource location of a first resource in the first carrier, and if the first resource is partially or entirely located within a first frequency-domain resource part among the plurality of frequency-domain resource parts, the resource location of an initial control resource set and / or the bandwidth of an initial downlink BWP are / is located within the first frequency-domain resource part. In the embodiments of the present application, the SSB may indicate the resource location of the first resource in the first carrier, and correspondingly, the resource location of the first resource is used to determine the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the first carrier, thereby helping to improve the flexibility of indicating the initial control resource set or the initial downlink bandwidth part.

Description

Wireless communication methods, terminal equipment and network equipment Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, and network device. Background Technology

[0002] Traditional methods for indicating the initial control resource set (CORESET) or initial downlink bandwidth part (BWP) are designed for single-carrier systems containing continuous frequency domain resources and may not be applicable to scenarios involving the first carrier (or a virtual carrier). For example, a virtual carrier may contain multiple frequency domain resource parts, some of which may have a smaller frequency domain range, insufficient to accommodate the initial control resource set and / or initial downlink BWP using frequency division multiplexing (FDM) with the synchronization signal / physical broadcast channel block (SSB) resources. In this case, the initial control resource set and / or initial downlink BWP using FDM with the SSB resources cannot be used, significantly limiting the flexibility of resource allocation during the initial access phase. Summary of the Invention

[0003] This application provides a wireless communication method, terminal device, and network device. The various aspects covered by this application are described below.

[0004] In a first aspect, a wireless communication method is provided, comprising: a terminal device receiving a Synchronization Broadcast Block (SSB) sent by a network device via a first carrier, the first carrier including multiple frequency domain resource portions, wherein first information in the SSB is used to indicate the resource location of a first resource in the first carrier, wherein if the first resource portion or all of it is located within the first frequency domain resource portion among the multiple frequency domain resource portions, then the resource location of an initial control resource set and / or the bandwidth of an initial downlink bandwidth portion (BWP) is located within the first frequency domain resource portion.

[0005] In a second aspect, a wireless communication method is provided, comprising: a network device transmitting a Synchronous Broadcast Block (SSB) to a terminal device via a first carrier, the first carrier including multiple frequency domain resource portions, wherein first information in the SSB is used to indicate the resource location of a first resource in the first carrier, wherein if the first resource is located within the first frequency domain resource portion among the multiple frequency domain resource portions, then the resource location of an initial control resource set and / or the bandwidth of an initial downlink bandwidth portion (BWP) is located within the first frequency domain resource portion.

[0006] Thirdly, a terminal device is provided, comprising: a receiving unit, configured to receive a Synchronization Broadcast Block (SSB) transmitted by a network device via a first carrier, the first carrier including multiple frequency domain resource portions, wherein first information in the SSB is used to indicate the resource location of a first resource in the first carrier, wherein if the first resource portion or all of it is located within the first frequency domain resource portion among the multiple frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion (BWP) is located within the first frequency domain resource portion.

[0007] Fourthly, a network device is provided, comprising: a transmitting unit that transmits a Synchronous Broadcast Block (SSB) to a terminal device via a first carrier, the first carrier including multiple frequency domain resource portions, wherein first information in the SSB is used to indicate the resource location of a first resource in the first carrier, wherein if the first resource is located within the first frequency domain resource portion among the multiple frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion (BWP) is located within the first frequency domain resource portion.

[0008] Fifthly, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory, causing the terminal device to perform some or all of the steps in the method of the first aspect.

[0009] In a sixth aspect, a network device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.

[0010] Seventhly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0011] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods described above.

[0012] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0013] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0014] In this embodiment, the SSB can indicate the resource location of the first resource in the first carrier. Accordingly, the resource location of the first resource is used to determine the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth in the first carrier. Compared with the indication method of the initial control resource set or the initial downlink bandwidth portion in conventional schemes, this helps to improve the flexibility of indicating the initial control resource set or the initial downlink bandwidth portion. Attached Figure Description

[0015] Figure 1 shows the wireless communication system 100 used in an embodiment of this application.

[0016] Figure 2 is a flowchart of the signal transmission in a wireless communication system applicable to the embodiments of this application.

[0017] Figure 3 is a schematic diagram of a scheme for determining the frequency domain position of a carrier based on the frequency domain position of the synchronization signal / physical broadcast channel block (SSB).

[0018] Figures 4A, 4B, and 4C illustrate schematic diagrams of the reuse mode between CORESET#0 and SSB applicable to embodiments of this application.

[0019] Figure 5 is a schematic flowchart of a wireless communication method according to an embodiment of this application.

[0020] Figure 6 is a schematic diagram of the positional relationship between the first resource and the resource transmitting the SSB in an embodiment of this application.

[0021] Figures 7A, 7B, 7C, and 7D are schematic diagrams illustrating schemes for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in embodiments of this application.

[0022] Figures 8A and 8B are schematic diagrams of a scheme for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in another embodiment of this application.

[0023] Figures 9 and 10 are schematic diagrams of a scheme in which the network device configures multiple frequency domain resource portions for the terminal device in an embodiment of this application.

[0024] Figures 11A and 11B are schematic diagrams of a scheme for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in another embodiment of this application.

[0025] Figure 12 is a schematic diagram of a terminal device according to an embodiment of this application.

[0026] Figure 13 is a schematic diagram of a network device according to an embodiment of this application.

[0027] Figure 14 is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0028] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0029] Figure 1 illustrates a wireless communication system 100 according to an embodiment of this application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0030] Figure 1 illustrates an exemplary network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other terminal devices within its coverage area. This application embodiment does not limit this.

[0031] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0032] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0033] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0034] The network device in this application embodiment can be a device for communicating with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0035] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0036] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0037] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0038] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0039] Signal transmission process in a wireless communication system

[0040] Figure 2 is a flowchart of signal transmission in a wireless communication system applicable to the embodiments of this application. As shown in Figure 2, the signal transmission process in the wireless communication system can be roughly divided into various channel coding processes S211 to S218 as shown in Figure 2.

[0041] In the channel coding process S211, the transmitter performs channel coding on the information to be transmitted (e.g., source bit stream) to obtain the encoded bit stream. The information to be transmitted can be in the form of a bit stream.

[0042] In the modulation process S212, the code stream is modulated into modulation symbols.

[0043] In the pilot insertion process S213, pilot symbols are inserted into the above modulation symbols to form a signal to be transmitted. The pilot symbols can be used by the receiver for channel estimation and symbol detection.

[0044] In transmission signal S214, the aforementioned signal is carried on the channel and transmitted to the receiver. During transmission through the channel, noise is typically added to the signal.

[0045] In the channel estimation process S215, the receiver can perform channel estimation based on the pilot signal to obtain channel state information (CSI), and feed the CSI back to the transmitter through the feedback link so that the transmitter can adjust the channel coding, modulation, precoding and other methods.

[0046] In the symbol detection process S216, symbol detection is performed on the received modulation symbols to obtain the detection results.

[0047] In the demodulation process S217, the received modulation symbols are demodulated based on the detection results to obtain the code stream.

[0048] In the channel decoding process S218, the code stream is decoded to obtain the recovered information (e.g., the recovered bit stream), wherein the recovered information may be in the form of a bit stream.

[0049] It should be understood that the channel coding processes S211 to S218 shown in Figure 2 are merely exemplary examples of common signal processing procedures in wireless communication systems. Wireless communication systems may also include signal processing procedures such as resource mapping, precoding, interference cancellation, and CSI measurement. For the sake of brevity, these will not be elaborated upon further in this application.

[0050] Carrier position determination method in initial access

[0051] In some communication systems (e.g., 5G communication systems), as shown in Figure 3, the terminal device first determines the frequency domain location of the SSB by searching for the SSB, then receives information from the network device indicating the frequency domain offset from the frequency domain start point of the SSB's frequency domain resources to the frequency domain start point of the carrier, and determines the frequency domain start point of the carrier based on the frequency domain offset and the frequency domain start point of the SSB's frequency domain resources.

[0052] Indication method for CORESET#0

[0053] In some communication systems (e.g., 5G NR), CORESET#0 is the first control resource set to monitor the physical downlink control channel (PDCCH) during the initial access process of a terminal device. The location of CORESET#0 is indicated by the master information block (MIB) carried by the physical broadcast channel (PBCH) in the SSB. Since the information that the MIB can carry is very limited, several multiplexing modes between CORESET#0 and the SSB are defined in the communication protocol. Thus, the MIB can indicate one of these multiplexing modes.

[0054] In some implementations, the multiplexing patterns corresponding to the multiplexing modes defined above can be seen in Figures 4A to 4C. The multiplexing pattern shown in Figure 4A adopts time-division multiplexing (TDM). In the time domain, the time-frequency resources of SSB and CORESET#0 do not overlap. In the frequency domain, the bandwidth of CORESET#0 completely or nearly completely covers the bandwidth of SSB.

[0055] The multiplexing pattern shown in Figure 4B employs a combination of TDM and frequency division multiplexing (FDM). In the time domain, the time-frequency resources of SSB and CORESET#0 do not overlap. In the frequency domain, the bandwidth of SSB and CORESET#0 do not overlap and are as close as possible.

[0056] The multiplexing pattern shown in Figure 4C uses FDM. In the time domain, the time-frequency resources of SSB overlap with those of CORESET#0. In the frequency domain, the bandwidth of SSB does not overlap with that of CORESET#0, and they are as close as possible.

[0057] Accordingly, the terminal device can first detect the SSB, determine the multiplexing pattern used by the SSB and CORESET#0 based on the MIB in the PBCH, and then determine the time-frequency resources of CORESET#0 based on the multiplexing pattern. Afterwards, the terminal device can detect downlink control information (DCI) for scheduling other system information in CORESET#0, and determine the time-frequency resources of the physical downlink control channel (PDSCH) carrying system information based on the DCI indication, and then read the system information from the PDSCH.

[0058] In known communication systems (e.g., 5G communication systems), physical carriers are used as independent carriers. If a terminal device needs to use multiple physical carriers simultaneously, it can only be achieved through carrier aggregation (CA) technology. In this case, the network device needs to send CA-related configuration information to the terminal device. However, in some scenarios, the complexity of the network device sending CA-related configuration information to the terminal device is disproportionate to the aggregation gain brought by CA, resulting in low carrier utilization efficiency in the communication system.

[0059] Therefore, to address the aforementioned issues, a first carrier comprising multiple frequency domain resource portions is introduced, which helps improve carrier utilization efficiency. In some implementations, multiple frequency domain resource portions can correspond to multiple physical carriers; that is, the first carrier can include multiple physical carriers, and correspondingly, these multiple physical carriers serve as the frequency domain resource portions of the first carrier. In some scenarios, the first carrier can be referred to as a "virtual carrier."

[0060] As mentioned earlier, the traditional methods for indicating the initial control resource set (e.g., CORESET#0) or the initial downlink bandwidth portion (initial DL BWP) are designed for single-carrier systems containing continuous frequency domain resources and may not be applicable to scenarios involving the first carrier (or a virtual carrier). For example, a virtual carrier may contain multiple frequency domain resource portions, and some of these portions may have a smaller frequency domain range, insufficient to accommodate the initial control resource set and / or initial downlink BWP using FDM with the SSB resources. In this case, the initial control resource set and / or initial downlink BWP using FDM with the SSB resources cannot be used. This allocation method significantly limits the flexibility of resource allocation during the initial access phase and causes additional cell search delay.

[0061] On the other hand, at least two frequency domain portions of the multiple frequency domain resource portions in the first carrier are discontinuous in the frequency domain, or in other words, some or all of the frequency domain portions of the multiple frequency domain resource portions are discontinuous in the frequency domain. Thus, when configuring the initial control resource set and / or the initial downlink BWP according to the traditional scheme, the initial control resource set and / or the initial downlink BWP may also be discontinuous in the frequency domain, resulting in a decrease in the reception performance of the initial control resource set and / or the initial downlink BWP.

[0062] Therefore, to address the aforementioned problems, this application provides a wireless communication method. In this method, the SSB can indicate the resource location of a first resource in a first carrier. Accordingly, the resource location of the first resource is used to determine the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth (BWP) in the first carrier. Compared to conventional methods for indicating the initial control resource set or the initial downlink bandwidth portion, this method improves the flexibility of indicating the initial control resource set or the initial downlink bandwidth portion. Furthermore, it helps to indicate consecutive initial control resource sets and / or initial downlink bandwidth portions in the frequency domain, thereby avoiding a decrease in the reception performance of the initial control resource set and / or the initial downlink bandwidth. The wireless communication method of this application embodiment is described below with reference to FIG5. The method shown in FIG5 includes step S510.

[0063] In step S510, the network device sends an SSB to the terminal device via a first carrier. The first carrier includes multiple frequency domain resource portions. The first information in the SSB is used to indicate the resource location of the first resource in the first carrier. The resource location of the first resource is used to determine the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the first carrier.

[0064] In some implementations, the first frequency domain resource portion among multiple frequency domain resource portions is used to carry the SSB.

[0065] In some implementations, the initial control resource set contains a PDCCH search space containing scheduling system information, where the PDCCH search space can be a type 0 PDCCH common search space.

[0066] In some implementations, the initial control resource set is CORESET#0.

[0067] In some implementations, the initial downlink BWP is the first downlink BWP activated after cell search.

[0068] In some implementations, the bandwidth of the initial downlink BWP can be understood as the frequency domain resource of the initial downlink BWP, or the frequency domain range corresponding to the initial downlink BWP. Typically, the frequency domain resource of the initial downlink BWP is the same as the frequency domain resource of the initial control resource set; in other words, the bandwidth of the initial downlink BWP is the same as the bandwidth of the initial control resource set.

[0069] In some implementations, at least two frequency domain portions of the multiple frequency domain resource portions are discontinuous in the frequency domain; or, in other words, some or all of the frequency domain portions of the multiple frequency domain resource portions are discontinuous in the frequency domain. Of course, in the embodiments of this application, all frequency domain portions of the multiple frequency domain resource portions may be continuous in the frequency domain.

[0070] In some implementations, the first information is used to indicate the resource location of the first resource in the first carrier. This can be understood as the value of the first information and the frequency domain location of the SSB determining the frequency domain location of the first resource. Of course, in the embodiments of this application, the resource location of the first resource may include the time-frequency location of the first resource.

[0071] In some implementations, the first information may be carried in the MIB of the SSB. Of course, in the embodiments of this application, the first information may also be other information carried by the PBCH of the SSB.

[0072] In this application embodiment, the content of the first information is not limited. In some implementations, the first information can be used to indicate the multiplexing method between the first resource and the resource of the transmission SSB (also known as "SSB resource"). In other implementations, the first information can be used to indicate the frequency domain offset between the frequency domain position of the first resource and the frequency domain position of the resource of the transmission SSB. Of course, in this application embodiment, the way the first information indicates the resource position of the first resource can be the same as the way the SSB indicates the resource position of CORESET#0 through MIB in conventional schemes.

[0073] In some implementations, the multiplexing method between the first resource and the resources of the transmission SSB includes Time Division Multiplexing (TDM) and / or Frequency Division Multiplexing (FDM). For example, TDM is used between the first resource and the resources of the transmission SSB. Another example is that FDM is used between the first resource and the resources of the transmission SSB. Yet another example is that both TDM and FDM are used between the first resource and the resources of the transmission SSB.

[0074] In some implementations, the first resource and the resource of the transmitting SSB are adjacent in the time domain, and / or adjacent in the frequency domain, which helps to reduce the information bits required to indicate the resource location of the first resource. Of course, in the embodiments of this application, the first resource and the resource of the transmitting SSB may be separated by a time domain offset, which may be determined based on one or more of the following: predefined information, preconfiguration information, and configuration information sent by the network device. Alternatively, the first resource and the resource of the transmitting SSB may be separated by a frequency domain offset, which may be determined based on one or more of the following: predefined information, preconfiguration information, and configuration information sent by the network device.

[0075] In some implementations, the resource size of the first resource can be the same as the resource size of the resource transmitting the SSB, which helps reduce the number of information bits required to indicate the resource location of the first resource. Of course, in the embodiments of this application, the resource size of the first resource can be different from the resource size of the resource transmitting the SSB to improve the flexibility of the first resource. In this case, the network device can indicate the resource size of the first resource to the terminal device.

[0076] The following section, with reference to Figure 6, describes the positional relationship between the first resource and the resources of the transmission SSB in the embodiments of this application. Assume that the terminal device receives first information from the MIB carried by the PBCH in the SSB, and determines the position of the initial control resource set (CORESET#0) or the initial DL BWP based on the frequency domain position of the SSB and the value of the first information.

[0077] Taking the determination of the resource location of the first resource based on candidate locations as an example, as shown in Figure 6, the candidate locations can be implemented in four ways: location 1, location 2, location 3, and location 4. Location 1 uses TDM with the resources of the SSB, locations 2 and 3 use FDM with the resources of the SSB, and location 4 uses both TDM and FDM with the resources of the SSB. Accordingly, the first information can indicate one candidate location from the candidate locations corresponding to the four implementation methods as the resource location of the first resource.

[0078] In one implementation, if the first information indicates that the resource location of the first resource is location 1, then the resources of the initial control resource set or the initial DL BWP are located in the same frequency domain range as the resources of the SSB, and the resources of the initial control resource set or the initial DL BWP are adjacent to the resources of the SSB in the time domain.

[0079] In one implementation, if the first information indicates that the resource location of the first resource is location 2, then the resources of the initial control resource set or the initial DL BWP are located within the same time domain as the resources of the SSB. In the frequency domain, the resources of the initial control resource set or the initial DL BWP are adjacent to the resources of the SSB, and compared to the resources of the SSB, the resources of the initial control resource set or the initial DL BWP are located on the lower side of the frequency domain.

[0080] In one implementation, if the first information indicates that the resource location of the first resource is location 3, then the resources of the initial control resource set or the initial DL BWP are within the same time domain as the resources of the SSB. In the frequency domain, the resources of the initial control resource set or the initial DL BWP are adjacent to the resources of the SSB, and compared to the resources of the SSB, the resources of the initial control resource set or the initial DL BWP are located on the higher side of the frequency domain.

[0081] In one implementation, if the first information indicates that the resource location of the first resource is position 4, then the resources of the initial control resource set or the initial DL BWP are adjacent to the resources of the SSB in both the time and frequency domains, and the resources of the initial control resource set or the initial DL BWP are located on the higher side of the frequency domain compared to the resources of the SSB. Furthermore, in the time domain, the resources of the initial control resource set or the initial DL BWP are later than the resources of the SSB.

[0082] The above describes the method for determining the resource location of the first resource in the embodiments of this application. The following describes the scheme for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP based on the resource location of the first resource in the embodiments of this application.

[0083] In some implementations, the resource location of the first resource is used to determine the resource location of the initial control resource set in the first carrier. Typically, the bandwidth corresponding to the initial control resource set is the bandwidth of the initial downlink BWP. Therefore, the resource location of the first resource is used to determine the bandwidth (or frequency domain range) of the initial downlink BWP in the first carrier.

[0084] In the embodiments of this application, the schemes for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP may vary slightly in different scenarios. The following descriptions are based on scenarios 1 and 2 respectively.

[0085] Scenario 1: The terminal device can determine the frequency domain range of each frequency domain resource portion in the first carrier. For example, the network device configures the frequency domain range of each frequency domain resource portion in the first carrier for the terminal device (see Figures 9 and 10 below). Another example is that the terminal device has previously accessed the network and obtained the frequency domain range of each frequency domain resource portion.

[0086] In some implementations, multiple frequency domain resource portions include a first frequency domain resource portion. If the first resource is located within the first frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion BWP is located within the first frequency domain resource portion.

[0087] In some implementations, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within a first resource. In some scenarios, since the resource location of the first resource is used to determine the resource location of the initial control resource set in the first carrier, the first resource is also referred to as a "candidate resource" of the initial control resource set. Of course, in the embodiments of this application, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP may be located within the first frequency domain portion at other resource locations corresponding to the resource location of the first resource. These other resource locations are associated with the resource location of the first resource but are not located within the first resource.

[0088] In other implementations, multiple frequency domain resource portions include a first frequency domain resource portion and a second frequency domain resource portion. Some or all of the resources in the first resource portion are located outside the first frequency domain resource portion. If the resource location of the first resource portion is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

[0089] In some implementations, the resource location of the first resource is associated with the resource location of the second frequency domain resource portion. This association can include the resource location of the first resource relative to the SSB in the frequency domain, and the resource location of the second frequency domain resource portion relative to the SSB. For example, the resource location of the first resource and the resource location of the second frequency domain resource portion may be located on the same side of the SSB resource location in the frequency domain, as described below with reference to Figures 8A and 8B. Another example is that the resource location of the first resource and the resource location of the second frequency domain resource portion may be located on different sides of the respective SSB resources in the frequency domain.

[0090] In some implementations, the frequency domain distance between the second frequency domain resource portion and the first frequency domain resource portion is less than or equal to the frequency domain distance between the first frequency domain resource portion and other frequency domain resource portions among the multiple frequency domain resource portions. That is to say, the second frequency domain resource portion is the frequency domain resource portion that is closest to the first frequency domain resource portion among the multiple frequency domain resource portions, which helps to simplify the complexity of determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP.

[0091] Assuming that the multiple frequency domain resource portions in the first carrier are indexed sequentially, the index of the second frequency domain resource portion is consecutive to the index of the first frequency domain resource portion. For example, if the first carrier includes frequency domain resource portion #0, frequency domain resource portion #1, and frequency domain resource portion #2, and frequency domain resource portion #0 is taken as the first frequency domain resource portion, the second frequency domain resource portion can be frequency domain resource portion #1.

[0092] In some scenarios, the association between the resource location of the first resource and the resource location of the second frequency domain resource can be determined by a first rule. In this embodiment, the first rule can be predefined, preconfigured, or configured by the network device.

[0093] In some implementations, the first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: the first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; the first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; the first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; wherein, other frequency domain ranges are other frequency domain ranges in the second frequency domain resource portion other than the first frequency domain range.

[0094] Taking the first frequency domain range as an example, which is greater than or equal to other frequency domain ranges in the second frequency domain resource section, that is, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the corresponding higher frequency part of the second frequency domain resource section.

[0095] Assuming the first and second frequency domain resource portions are arranged from low to high in the frequency domain, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the portion of the second frequency domain resource portion that is far from the first frequency domain resource. Alternatively, assuming the first and second frequency domain resource portions are arranged from high to low in the frequency domain, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the portion of the second frequency domain resource portion that is close to the first frequency domain resource.

[0096] Taking the first frequency domain range as an example, which is less than or equal to other frequency domain ranges in the second frequency domain resource section, that is, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the corresponding lower frequency part of the second frequency domain resource section.

[0097] Assuming the first and second frequency domain resource portions are arranged from low to high in the frequency domain, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the portion of the second frequency domain resource portion closer to the first frequency domain resource. Alternatively, assuming the first and second frequency domain resource portions are arranged from high to low in the frequency domain, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the portion of the second frequency domain resource portion farther from the first frequency domain resource.

[0098] Taking the first frequency domain range located in the center frequency domain range of the second frequency domain resource section as an example, that is to say, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located in the corresponding center frequency part of the second frequency domain resource section.

[0099] In some scenarios, the resource location of the initial control resource set and / or the resource location of the bandwidth of the initial downlink BWP in the second frequency domain resource portion can be determined by a second rule. In the embodiments of this application, the second rule can be predefined, preconfigured, or configured by the network device.

[0100] It should be noted that the embodiments of this application do not limit the temporal location of the resource location of the initial control resource set. For example, the temporal location of the initial control resource set may overlap with the temporal location of the first resource, which helps to reduce the complexity of determining the temporal location of the initial control resource set. Of course, in the embodiments of this application, the temporal location of the initial control resource set may be determined based on the temporal location of the first resource. For example, the temporal location of the initial control resource set may be obtained by offsetting the temporal location of the first resource by a temporal offset, wherein the temporal offset may be determined based on one or more of the following: predefined information, preconfiguration information, and configuration information sent by the network device.

[0101] For ease of understanding, the following describes the scheme for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the embodiments of this application, with reference to Figures 7A to 8B. Referring to Figures 7A to 8B, it is assumed that the first carrier contains three discontinuous frequency domain resource portions: frequency domain resource portion 0, frequency domain resource portion 1, and frequency domain resource portion 2. Furthermore, the initial control resource set is CORESET#0.

[0102] In this embodiment, since the frequency range of each frequency domain resource portion in the first carrier is known, if the first resource is within the first frequency domain resource portion, then the resource of the initial control resource set or the bandwidth of the initial DL BWP is determined to be within the first resource, as shown in Figures 7A to 7D. If at least a portion of the first resource is not within the first frequency domain resource portion, then a second frequency domain resource portion can be determined outside the first frequency domain resource portion based on the frequency range of each frequency domain resource portion, and the resource of the initial control resource set or the bandwidth of the initial DL BWP can be determined within the second frequency domain resource portion, as shown in Figures 8A to 8B.

[0103] As shown in Figure 7A, assuming the terminal device accesses from the SSB of frequency domain resource section 1, the MIB in the PBCH of the SSB (as an example of the first information) indicates that CORESET#0 or the initial DL BWP is transmitted in the candidate resource that uses TDM with the SSB resource (see position 1 in Figure 6). Since the candidate resource that uses TDM with the SSB resource must be located in frequency domain resource section 1, the terminal device can determine that the resource of CORESET#0 or the initial DL BWP is also located in frequency domain resource section 1.

[0104] As shown in Figure 7B, assuming the terminal device accesses from the SSB in Frequency Domain Resource Section 1, the MIB in the PBCH of the SSB (as an example of the first information) indicates that CORESET#0 or the initial DL BWP is transmitted in a candidate resource that uses FDM with the SSB resource (see position 3 in Figure 6). Since the candidate resource that uses FDM with the SSB resource is located in Frequency Domain Resource Section 1, the terminal device can determine that the resource for CORESET#0 or the initial DL BWP is also located in Frequency Domain Resource Section 1.

[0105] As shown in Figure 7C, assuming the terminal device accesses from the SSB in frequency domain resource section 1, the MIB in the PBCH of the SSB (as an example of the first information) indicates that CORESET#0 or the initial DL BWP is transmitted in a candidate resource that uses FDM with the SSB resource (see position 2 in Figure 6). Since the candidate resource that uses FDM with the SSB resource is located in frequency domain resource section 1, the terminal device can determine that the resource for CORESET#0 or the initial DL BWP is also located in frequency domain resource section 1.

[0106] As shown in Figure 7D, assuming the terminal device accesses from the SSB in frequency domain resource section 1, the MIB in the PBCH of the SSB (as an example of the first information) indicates that CORESET#0 or the initial DL BWP is transmitted in a candidate resource (see position 4 in Figure 6) that uses FDM and TDM with the SSB resource. Since the candidate resource that uses FDM and TDM with the SSB resource is located in frequency domain resource section 1, the terminal device can determine that the resource of CORESET#0 or the initial DL BWP is also located in frequency domain resource section 1.

[0107] As shown in Figure 8A, assuming the terminal device accesses from the SSB in frequency domain resource section 1, the MIB of the PBCH in the SSB (as an example of the first information) indicates that the candidate resource adopts FDM with the SSB resource (see position 3 in Figure 6). Accordingly, this candidate resource is used to determine the bandwidth of the resource for transmitting CORESET#0 or the initial DL BWP. However, since the candidate resource adopting FDM with the SSB resource is only partially located within frequency domain resource section 1, and the other part of the candidate resource is located outside frequency domain resource section 1, the terminal device can determine that the bandwidth of the resource for CORESET#0 or the initial DL BWP is not within frequency domain resource section 1.

[0108] Subsequently, the terminal device can determine the frequency domain resource portion containing the resources of CORESET#0 or the bandwidth of the initial DL BWP from frequency domain resource portion 0 and frequency domain resource portion 2 based on the first rule. The first rule indicates that the frequency domain resource portion containing the resources of CORESET#0 or the bandwidth of the initial DL BWP, and the candidate resources, are located on the same side of the resources of the SSB in the frequency domain. Referring again to Figure 8A, since the frequency domain range corresponding to the candidate resources is higher than the frequency domain range corresponding to the SSB resources, and the frequency domain range corresponding to frequency domain resource portion 2 is higher than the frequency domain range corresponding to frequency domain resource portion 1, the frequency domain resource portion containing the resources of CORESET#0 or the bandwidth of the initial DL BWP is frequency domain resource portion 2.

[0109] Subsequently, the terminal device can determine the resource location of CORESET#0 or the bandwidth of the initial DL BWP in the frequency domain resource section 2 based on the second rule.

[0110] In some implementations, if the second rule indicates that the resources of CORESET#0 or the bandwidth of the initial DL BWP are located in the portion of the frequency domain resources closest to the frequency domain resource portion 1 in the frequency domain resource portion 2, then the resources of CORESET#0 or the bandwidth of the initial DL BWP are shown in Option 1 of Figure 8A.

[0111] In some implementations, if the second rule indicates that the resources of CORESET#0 or the bandwidth of the initial DL BWP are located in the portion of the frequency domain resources furthest from the frequency domain resource portion 1 in the frequency domain resource portion 2, then the resources of CORESET#0 or the bandwidth of the initial DL BWP are shown in option 3 in Figure 8A.

[0112] In some implementations, if the second rule indicates that the resources of CORESET#0 or the bandwidth of the initial DL BWP are located within the center frequency domain resources in frequency domain resource section 2, then the resources of CORESET#0 or the bandwidth of the initial DL BWP are as shown in option 2.

[0113] In the embodiments of this application, SSB can be transmitted in a virtual carrier (i.e., the first carrier) composed of multiple physical carriers. When the physical carrier where the SSB is located is narrow and cannot accommodate the CORESET#0 or initial DL BWP of the SSB FDM, the CORESET#0 or initial DL BWP of the SSB FDM can still be accommodated in another physical carrier. Thus, the CORESET#0 or initial DL BWP of the SSB FDM can be transmitted in a virtual carrier composed of scattered physical carriers, shortening the initial access delay and enabling the multi-beam system to complete the transmission of the SSB and CORESET#0 / initial DL BWP of one beam in the shortest possible time, thereby improving the efficiency of multi-beam transmission.

[0114] As shown in Figure 8B, assuming the terminal device accesses from the SSB in frequency domain resource section 1, the MIB of the PBCH in the SSB (as an example of the first information) indicates that the candidate resource uses FDM and TDM with the SSB resource (see position 4 in Figure 6). Accordingly, this candidate resource is used to determine the bandwidth of the resource for transmitting CORESET#0 or the initial DL BWP. However, since the candidate resource using FDM and TDM with the SSB resource is only partially located within frequency domain resource section 1, and the other part of the candidate resource is located outside frequency domain resource section 1, the terminal device can determine that the bandwidth of the resource for CORESET#0 or the initial DL BWP is not within frequency domain resource section 1.

[0115] Subsequently, the terminal device can determine the frequency domain resource portion containing the resources of CORESET#0 or the bandwidth of the initial DL BWP from frequency domain resource portion 0 and frequency domain resource portion 2 based on the first rule. The first rule indicates that the frequency domain resource portion containing the resources of CORESET#0 or the bandwidth of the initial DL BWP, and the candidate resources, are located on the same side of the resources of the SSB in the frequency domain. Referring again to Figure 8B, since the frequency domain range corresponding to the candidate resources is higher than the frequency domain range corresponding to the SSB resources, and the frequency domain range corresponding to frequency domain resource portion 2 is higher than the frequency domain range corresponding to frequency domain resource portion 1, the frequency domain resource portion containing the resources of CORESET#0 or the bandwidth of the initial DL BWP is frequency domain resource portion 2.

[0116] Subsequently, the terminal device can determine the resource location of CORESET#0 or the bandwidth of the initial DL BWP in the frequency domain resource section 2 based on the second rule.

[0117] In some implementations, if the second rule indicates that the resources of CORESET#0 or the bandwidth of the initial DL BWP are located in the portion of the frequency domain resources closest to the frequency domain resource portion 1 in the frequency domain resource portion 2, then the resources of CORESET#0 or the bandwidth of the initial DL BWP are shown in Option 1 of Figure 8B.

[0118] In some implementations, if the second rule indicates that the resources of CORESET#0 or the bandwidth of the initial DL BWP are located in the portion of the frequency domain resources furthest from the frequency domain resource portion 1 in the frequency domain resource portion 2, then the resources of CORESET#0 or the bandwidth of the initial DL BWP are shown in option 3 in Figure 8B.

[0119] In some implementations, if the second rule indicates that the resources of CORESET#0 or the bandwidth of the initial DL BWP are located within the center frequency domain resources in frequency domain resource section 2, then the resources of CORESET#0 or the bandwidth of the initial DL BWP are shown in option 2 in Figure 8B.

[0120] As mentioned above, in Scenario 1, the network device can configure the frequency domain resources of each of the multiple frequency domain resource portions for the terminal device. That is to say, the above method also includes: the network device sending first configuration information to the terminal device, the first configuration information being used to configure the frequency domain resources of each of the multiple frequency domain resource portions.

[0121] In some implementations, the first configuration information is used to indicate the frequency domain position of each of the multiple frequency domain resource portions. For example, the first configuration information carries one or more of the following: indication information of a first frequency domain position, and a frequency domain offset of the frequency domain position of each of the multiple frequency domain resource portions relative to the first frequency domain position.

[0122] In some implementations, the first configuration information is carried within system information.

[0123] In some implementations, the first frequency domain location can be determined based on the frequency domain location of the SSB. For example, the first frequency domain location can be the frequency domain location of the SSB. In the embodiments of this application, after initial access, the terminal device can directly determine the frequency domain location of the first carrier indicated by the first configuration information based on the frequency domain location of the SSB, which helps to simplify the complexity of the terminal device in determining the frequency domain location of the first carrier.

[0124] For example, the first frequency domain location can be a reference frequency domain location determined based on the frequency domain location of the SSB. In this case, the reference frequency domain location is different from the frequency domain location of the SSB. In the embodiments of this application, for the case where different terminal devices among multiple terminal devices access the first carrier based on different SSBs, multiple terminal devices can determine the frequency domain location of the frequency domain resource portion of the first carrier to be accessed based on the first frequency domain location. That is to say, the network device can carry a set of frequency domain offsets for multiple frequency domain portions in the first configuration information. Compared with sending multiple sets of frequency domain offsets for multiple frequency domain portions for different SSB frequency domain resources, this helps to reduce the signaling overhead of the first configuration information.

[0125] In this embodiment, the frequency domain position of the SSB is not limited. For example, the frequency domain position of the SSB can be the frequency domain starting position of the SSB (also known as the "frequency domain start point of the SSB"). Another example is that the frequency domain position of the SSB can be the center frequency of the subcarrier with the lowest frequency domain position among the subcarriers occupied by the SSB; that is, the frequency domain position of the SSB can be the center frequency of the subcarrier with the lowest frequency in the frequency domain resources of the SSB. Yet another example is that the frequency domain position of the SSB can be the center frequency of the subcarrier with the lowest frequency domain position corresponding to the SSB in the resource grid where the first carrier is located, or in other words, the frequency domain position of the SSB can be the center frequency of the subcarrier with the lowest frequency that overlaps with the SSB in the frequency domain within the resource grid where the first carrier is located. For example, the frequency domain position of the SSB can be the center frequency point of the subcarrier with the lowest frequency domain position in the resource block (RB) where the SSB is located in the resource grid where the first carrier is located. In other words, the frequency domain position of the SSB can be the center frequency point of the subcarrier with the lowest frequency in the resource block where the SSB overlaps with the SSB in the frequency domain in the resource grid where the first carrier is located.

[0126] For ease of understanding, the following sections, in conjunction with Figures 9 and 10, describe the scheme by which the network device configures multiple frequency domain resources for the terminal device in the embodiments of this application.

[0127] Referring to Figure 9, assume that the first carrier includes three frequency domain resource portions: frequency domain resource portion 0, frequency domain resource portion 1, and frequency domain resource portion 2. The first configuration information indicates that the frequency domain start position (i.e., the first frequency domain position) of the SSB's frequency domain resources is frequency domain position 0. Correspondingly, the frequency domain offset between the frequency domain start position (i.e., frequency domain position 1) of frequency domain resource portion 0 and frequency domain position 0 is frequency domain offset 0, the frequency domain offset between the frequency domain start position (i.e., frequency domain position 2) of frequency domain resource portion 1 and frequency domain position 0 is frequency domain offset 1, and the frequency domain offset between the frequency domain start position (i.e., frequency domain position 3) of frequency domain resource portion 2 and frequency domain position 0 is frequency domain offset 2. Accordingly, the terminal device can determine frequency domain position 0 based on the first configuration information, and determine frequency domain position 1 of frequency domain resource part 0 based on frequency domain position 0 and frequency domain offset 0, determine frequency domain position 2 of frequency domain resource part 1 based on frequency domain position 0 and frequency domain offset 1, and determine frequency domain position 3 of frequency domain resource part 2 based on frequency domain position 0 and frequency domain offset 2.

[0128] Referring to Figure 10, assume that the first carrier includes three frequency domain resource portions: frequency domain resource portion 0, frequency domain resource portion 1, and frequency domain resource portion 2. The first configuration information indicates that the frequency domain offset between the first frequency domain position (see frequency domain position 0) and the frequency domain position of the SSB is frequency domain offset 0. Furthermore, the frequency domain offset between the frequency domain start position (i.e., frequency domain position 1) of frequency domain resource portion 0 and frequency domain position 0 is frequency domain offset 1, the frequency domain offset between the frequency domain start position (i.e., frequency domain position 2) of frequency domain resource portion 1 and frequency domain position 0 is frequency domain offset 2, and the frequency domain offset between the frequency domain start position (i.e., frequency domain position 3) of frequency domain resource portion 2 and frequency domain position 0 is frequency domain offset 3. Accordingly, the terminal device can determine frequency domain position 0 based on the first configuration information, and determine frequency domain position 1 of frequency domain resource part 0 based on frequency domain position 0 and frequency domain offset 1, determine frequency domain position 2 of frequency domain resource part 1 based on frequency domain position 0 and frequency domain offset 2, and determine frequency domain position 3 of frequency domain resource part 2 based on frequency domain position 0 and frequency domain offset 3.

[0129] Scenario 2: The terminal device has not obtained the frequency domain range of each frequency domain resource portion in the first carrier. For example, the network device has not yet configured the frequency domain range of each frequency domain resource portion in the first carrier for the terminal device. Another example is that the terminal device has never accessed the network before.

[0130] In some implementations, multiple frequency domain resource portions include a first frequency domain resource portion. If the first resource is located within the first frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP is located within the first frequency domain resource portion.

[0131] In some implementations, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource. In some scenarios, since the resource location of the first resource is used to determine the resource location of the initial control resource set in the first carrier, the first resource is also referred to as the "candidate resource" of the initial control resource set.

[0132] It should be noted that, in this embodiment of the application, since the terminal device cannot determine the frequency range of each frequency domain resource portion in the first carrier, the terminal device can use a blind detection method to determine whether the resource location of the first resource is located in the first frequency domain resource portion.

[0133] In other words, the initial control resource set is used to transmit DCI. If the terminal device detects DCI in the first resource, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource; and / or if the terminal device does not detect DCI in the first resource, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located outside the first resource.

[0134] It should be noted that if the terminal device detects DCI in the first resource, then the first resource can be entirely located within the first frequency domain resource portion, or the resources of the initial control resource set in the first resource can be located within the first frequency domain resource portion. In this case, the resources in the first resource other than the resources of the initial control resource set can be located outside the first frequency domain resource portion. That is to say, some resources in the first resource are located within the first frequency domain resource portion.

[0135] In some implementations, if the terminal device does not detect DCI in the first resource, the above method also includes: the terminal device detecting DCI in multiple resources.

[0136] In some implementations, the terminal device detects DCI in multiple resources, including: the terminal device detects DCI in multiple resources in ascending order of frequency domain resources.

[0137] In some implementations, multiple resources satisfy one or more of the following: multiple resources are located on the same side of the SSB resources in the frequency domain; every two resources are adjacent in the frequency domain; and each resource has the same frequency domain range.

[0138] Taking the example of multiple resources located on the same side of the SSB in the frequency domain, in some implementations, the multiple resources can be located on the side of the frequency range corresponding to the resource with a frequency range higher than or equal to that of the SSB. Of course, in the embodiments of this application, the multiple resources can be located on the side of the frequency range corresponding to the resource with a frequency range lower than or equal to that of the SSB.

[0139] Taking the example of each resource having the same frequency domain range among multiple resources, having the same frequency domain range among multiple resources helps reduce the complexity of DCI detection by the terminal device. Of course, in the embodiments of this application, the frequency domain range of each resource among multiple resources may be different.

[0140] In some scenarios, the terminal device's method of detecting multiple resources (DCI) can be determined based on a third rule. In the embodiments of this application, the first rule can be predefined, pre-configured, or configured by the network device.

[0141] Additionally, it should be noted that multiple resources may be located on the same side of the SSB in the frequency domain as the first resource; one of the multiple resources may be adjacent to the first resource in the frequency domain; and multiple resources may have the same frequency domain range as the first resource.

[0142] For example, multiple resources are multiple candidate resources. The third rule is used to indicate that if the first resource is located in the first direction of the SSB in the frequency domain, and the frequency domain width of the SSB is D, and the frequency domain position of the edge of the first resource away from the SSB is W0, then DCI is detected in the candidate resources in the frequency range [W0+kD, W0+(k+1)D] (k=0,1,2,…) in ascending order of k until DCI is detected. If DCI is detected when k=K, then it is determined that the initial control resource set or the initial DL BWP is located in the candidate resources in the range [W0+KD, W0+(K+1)D], where K is a positive integer.

[0143] The following describes, with reference to Figures 11A and 11B, a scheme for determining the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in another embodiment of this application. Assume that the first carrier contains three discontinuous frequency domain resource portions: frequency domain resource portion 0, frequency domain resource portion 1, and frequency domain resource portion 2. Furthermore, the initial control resource set is CORESET#0.

[0144] In this embodiment, since the frequency range of each frequency domain resource portion is unknown, if the first resource is within the first frequency domain resource portion, then it is determined that the resource of the initial control resource set or the bandwidth of the initial DL BWP is located within the first resource. If at least a portion of the first resource is not within the first frequency domain resource portion, then blind detection is required to sequentially detect possible resources until the resource of the initial control resource set or the bandwidth of the initial DL BWP is found.

[0145] Assuming the terminal device accesses from the SSB in frequency domain resource section 1, if the MIB in the PBCH of the SSB (as an example of the first information) indicates that CORESET#0 or the initial DL BWP is transmitted in a candidate resource that uses TDM with the SSB resource (see position 1 in Figure 6), since the candidate resource that uses TDM with the SSB resource must be located in frequency domain resource section 1, the terminal device can determine that the resource of CORESET#0 or the initial DL BWP is also located in frequency domain resource section 1, as shown in Figure 7A.

[0146] In Case 1: If the MIB indicates that the first resource and the SSB resource use FDM (see position 3 in Figure 6), the terminal device cannot determine whether the first resource is located within the frequency domain resource portion 1. In this case, the terminal device can detect DCI within the candidate resource 1 indicated by the MIB. If DCI is detected, the terminal device can determine that the resource of the initial control resource set or the bandwidth of the initial DL BWP is located in candidate resource 1. If DCI is not detected, the terminal device can detect DCI in multiple resources according to the third rule. The third rule indicates that if candidate resource 1 is located in the first direction of the SSB resource in the frequency domain, and the frequency domain width of the SSB is D, and the frequency domain position of candidate resource 1 away from the edge of the SSB is W0, then DCI is detected in multiple candidate resources in the frequency range [W0+kD, W0+(k+1)D] (k=0,1,2,…) in ascending order of k until DCI is detected. For example, if DCI is detected at k=K, then the resources of the initial control resource set or the bandwidth of the initial DL BWP are determined to be within the candidate resources in [W0+KD, W0+(K+1)D].

[0147] In other words, the terminal device can first assume that CORESET#0 is located in candidate resource 1 and detect DCI within candidate resource 1. If the terminal device can detect DCI in candidate resource 1, it can be determined that the CORESET#0 resource or the initial DL BWP bandwidth is located within candidate resource 1. If the terminal device does not detect DCI in candidate resource 1, it can be determined that the CORESET#0 resource or the initial DL BWP is not located within candidate resource 1.

[0148] Assuming the frequency domain range corresponding to candidate resource 1 is higher than the frequency domain range corresponding to the resource located in the SSB, the terminal device can determine, based on the third rule, that multiple candidate resources and candidate resource 1 are all located on the same side of the SSB resource in the frequency domain, and that the resource size of multiple candidate resources is the same as the resource size of the SSB resource. Referring again to Figure 11A, the terminal device can sequentially detect DCI in multiple candidate resources. Assuming the multiple candidate resources include candidate resource 2 and candidate resource 3, if the terminal device cannot detect DCI in candidate resource 2, it can determine that the resource of CORESET#0 or the bandwidth of the initial DL BWP is not within candidate resource 2. Then, the terminal device continues to detect DCI in candidate resource 3. If the terminal device detects DCI in candidate resource 3, it can determine that the resource of CORESET#0 or the bandwidth of the initial DL BWP is within candidate resource 3, where the frequency domain range corresponding to candidate resource 3 can be represented as [W0+kD, W0+(k+1)D], where k is 1.

[0149] In Case 2: If the MIB indicates that the first resource and the SSB resource use FDM and TDM (see position 4 in Figure 6), the terminal device cannot determine whether the first resource is located within the frequency domain resource portion 1. In this case, the terminal device can detect DCI within the candidate resource 1 indicated by the MIB. If DCI is detected, the terminal device can determine that the resource of the initial control resource set or the bandwidth of the initial DL BWP is located in candidate resource 1. If DCI is not detected, the terminal device can detect DCI in multiple resources according to the third rule. The third rule indicates that if candidate resource 1 is located in the first direction of the SSB resource in the frequency domain, and the frequency domain width of the SSB is D, and the frequency domain position of candidate resource 1 away from the edge of the SSB is W0, then DCI is detected in multiple candidate resources in the frequency range [W0+kD, W0+(k+1)D] (k=0,1,2,…) in ascending order of k until DCI is detected. For example, if DCI is detected at k=K, then the resources of the initial control resource set or the bandwidth of the initial DL BWP are determined to be within the candidate resources in [W0+KD, W0+(K+1)D].

[0150] In other words, the terminal device can first assume that CORESET#0 is located in candidate resource 1 and detect DCI within candidate resource 1. If the terminal device can detect DCI in candidate resource 1, it can be determined that the CORESET#0 resource or the initial DL BWP bandwidth is located within candidate resource 1. If the terminal device does not detect DCI in candidate resource 1, it can be determined that the CORESET#0 resource or the initial DL BWP is not located within candidate resource 1.

[0151] Assuming the frequency domain range corresponding to candidate resource 1 is higher than the frequency domain range corresponding to the resource located in the SSB, the terminal device can determine, based on the third rule, that multiple candidate resources and candidate resource 1 are all located on the same side of the SSB resource in the frequency domain, and that the resource size of multiple candidate resources is the same as the resource size of the SSB resource. Referring again to Figure 11B, the terminal device can sequentially detect DCI in multiple candidate resources. Assuming the multiple candidate resources include candidate resource 2 and candidate resource 3, if the terminal device cannot detect DCI in candidate resource 2, it can determine that the resource of CORESET#0 or the bandwidth of the initial DL BWP is not within candidate resource 2. Then, the terminal device continues to detect DCI in candidate resource 3. If the terminal device detects DCI in candidate resource 3, it can determine that the resource of CORESET#0 or the bandwidth of the initial DL BWP is within candidate resource 3, where the frequency domain range corresponding to candidate resource 3 can be represented as [W0+kD, W0+(k+1)D], where k is 1.

[0152] In this embodiment, SSBs can be transmitted in a virtual carrier (i.e., the first carrier) composed of multiple physical carriers. When the physical carrier where the SSB is located is narrow and cannot accommodate the resources of CORESET#0 or the initial DL BWP bandwidth using FDM with the SSB resources, the resources of CORESET#0 or the initial DL BWP bandwidth can still be accommodated in another physical carrier. Therefore, the resources of CORESET#0 or the initial DL BWP bandwidth can be supported in a virtual carrier containing scattered physical carriers, which helps to shorten the initial access latency and enables the multi-beam system to complete the transmission of SSBs and CORESET#0 / initial DL BWP of one beam in the shortest possible time, improving the efficiency of multi-beam transmission. Furthermore, this embodiment can be applied to situations where the terminal device does not know the frequency domain range of each physical carrier in the virtual carrier, thereby improving the positional flexibility of each physical carrier in the virtual carrier.

[0153] The method embodiments of this application have been described in detail above with reference to Figures 1 to 11B. The apparatus embodiments of this application will be described in detail below with reference to Figures 12 to 14. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0154] Figure 12 is a schematic diagram of a terminal device according to an embodiment of this application. The terminal device 1200 shown in Figure 12 includes a receiving unit 1210.

[0155] The receiving unit 1210 is configured to receive a Synchronization Broadcast Block (SSB) sent by a network device via a first carrier. The first carrier includes multiple frequency domain resource portions. The first information in the SSB is used to indicate the resource location of a first resource in the first carrier. If the first resource portion or all of the first resource portion is located within the first frequency domain resource portion of the multiple frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion (BWP) is located within the first frequency domain resource portion.

[0156] In some implementations, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource.

[0157] In some implementations, the plurality of frequency domain resource portions includes a second frequency domain resource portion. If some or all of the resources in the first resource are located outside the first frequency domain resource portion, and the resource location of the first resource is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

[0158] In some implementations, the resource location of the first resource in the frequency domain relative to the resource location of the SSB is associated with the resource location of the second frequency domain resource portion relative to the resource location of the SSB.

[0159] In some implementations, the resource location of the first resource and the resource location of the second frequency domain resource portion are located on the same side of the resource location of the SSB in the frequency domain.

[0160] In some implementations, the first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: the first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; the first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; the first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; wherein, the other frequency domain ranges are other frequency domain ranges in the second frequency domain resource portion other than the first frequency domain range.

[0161] In some implementations, the receiving unit is further configured to receive first configuration information sent by the network device, the first configuration information being used to configure the frequency domain resources of each of the plurality of frequency domain resource portions.

[0162] In some implementations, the initial control resource set is used to transmit downlink control information (DCI). If the terminal device detects the DCI in the first resource, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP is located within the first resource; and / or if the terminal device does not detect the DCI in the first resource, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP is located outside the first resource.

[0163] In some implementations, the terminal device does not detect the DCI in the first resource, and the terminal device further includes a processing unit for detecting the DCI in multiple resources.

[0164] In some implementations, the processing unit is further configured to detect the DCI in the plurality of resources in ascending order of frequency domain resources.

[0165] In some implementations, the plurality of resources satisfy one or more of the following: the plurality of resources are located on the same side of the SSB in the frequency domain; every two resources are adjacent in the frequency domain; and each resource has the same frequency domain range.

[0166] In some implementations, the first frequency domain resource portion is used to carry the SSB.

[0167] In some implementations, the multiplexing method between the first resource and the resource transmitting the SSB includes time division multiplexing (TDM) and / or frequency division multiplexing (FDM).

[0168] In some implementations, the first resource is adjacent to the resource transmitting the SSB in the time domain, or the first resource is adjacent to the resource transmitting the SSB in the frequency domain.

[0169] In some implementations, the first information is carried in the main information block (MIB) carried by the SSB.

[0170] In some implementations, the initial control resource set includes a physical downlink control channel (PDCCH) search space containing scheduling system information.

[0171] In some implementations, the PDCCH search space is a common search space of type 0PDCCH.

[0172] In some implementations, the initial control resource set is CORESET#0.

[0173] In some implementations, the initial downlink BWP is the first downlink BWP activated after cell search.

[0174] In some implementations, at least two of the plurality of frequency domain resource portions are discontinuous in the frequency domain; and / or each of the plurality of frequency domain resource portions corresponds to a physical carrier.

[0175] Figure 13 is a schematic diagram of a network device according to an embodiment of this application. The network device 1300 shown in Figure 13 includes: a transmitting unit 1310.

[0176] The transmitting unit 1310 transmits a Synchronization Broadcast Block (SSB) to the terminal device via a first carrier. The first carrier includes multiple frequency domain resource portions. The first information in the SSB is used to indicate the resource location of a first resource in the first carrier. If the first resource is located within the first frequency domain resource portion among the multiple frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion (BWP) is located within the first frequency domain resource portion.

[0177] In some implementations, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource.

[0178] In some implementations, the plurality of frequency domain resource portions includes a second frequency domain resource portion. If some or all of the resources in the first resource are located outside the first frequency domain resource portion, and the resource location of the first resource is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

[0179] In some implementations, the resource location of the first resource in the frequency domain relative to the resource location of the SSB is associated with the resource location of the second frequency domain resource portion relative to the resource location of the SSB.

[0180] In some implementations, the resource location of the first resource and the resource location of the second frequency domain resource portion are located on the same side of the resource location of the SSB in the frequency domain.

[0181] In some implementations, the first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: the first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; the first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; the first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; wherein, the other frequency domain ranges are other frequency domain ranges in the second frequency domain resource portion other than the first frequency domain range.

[0182] In some implementations, the sending unit is further configured to send first configuration information to the terminal device, the first configuration information being used to configure the frequency domain resources of each of the plurality of frequency domain resource portions.

[0183] In some implementations, the first frequency domain resource portion is used to carry the SSB.

[0184] In some implementations, the multiplexing method between the first resource and the resource transmitting the SSB includes time division multiplexing (TDM) and / or frequency division multiplexing (FDM).

[0185] In some implementations, the first resource is adjacent to the resource transmitting the SSB in the time domain, or the first resource is adjacent to the resource transmitting the SSB in the frequency domain.

[0186] In some implementations, the first information is carried in the main information block (MIB) carried by the SSB.

[0187] In some implementations, the initial control resource set includes a physical downlink control channel (PDCCH) search space containing scheduling system information.

[0188] In some implementations, the PDCCH search space is a common search space of type 0PDCCH.

[0189] In some implementations, the initial control resource set is CORESET#0.

[0190] In some implementations, the initial downlink BWP is the first downlink BWP activated after cell search.

[0191] In some implementations, at least two of the plurality of frequency domain resource portions are discontinuous in the frequency domain; and / or each of the plurality of frequency domain resource portions corresponds to a physical carrier.

[0192] In an optional embodiment, the receiving unit 1210 may be a transceiver 1430. The terminal device 1200 may also include a processor 1410 and a memory 1420, as shown in FIG14.

[0193] In an optional embodiment, the transmitting unit 1310 may be a transceiver 1430. The network device 1300 may also include a processor 1410 and a memory 1420, as shown in FIG14.

[0194] Figure 14 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 14 indicate that the unit or module is optional. This device 1400 can be used to implement the methods described in the above method embodiments. Device 1400 can be a chip, a terminal device, or a network device.

[0195] Apparatus 1400 may include one or more processors 1410. The processor 1410 may support apparatus 1400 in implementing the methods described in the preceding method embodiments. The processor 1410 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0196] The apparatus 1400 may further include one or more memories 1420. The memories 1420 store a program that can be executed by the processor 1410, causing the processor 1410 to perform the methods described in the preceding method embodiments. The memories 1420 may be independent of the processor 1410 or integrated within the processor 1410.

[0197] The device 1400 may also include a transceiver 1430. The processor 1410 can communicate with other devices or chips via the transceiver 1430. For example, the processor 1410 can send and receive data with other devices or chips via the transceiver 1430.

[0198] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0199] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0200] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0201] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0202] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0203] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0204] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0205] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0206] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0207] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0208] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0209] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0210] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0211] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0212] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0213] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device receives a Synchronization Broadcast Block (SSB) sent by the network device via a first carrier. The first carrier includes multiple frequency domain resource portions, and the first information in the SSB is used to indicate the resource location of a first resource in the first carrier. If the first resource portion or all of it is located within the first frequency domain resource portion among the plurality of frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion BWP is located within the first frequency domain resource portion.

2. The method as described in claim 1, characterized in that, The resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource.

3. The method as described in claim 1 or 2, characterized in that, The plurality of frequency domain resource portions include a second frequency domain resource portion. If some or all of the resources in the first resource are located outside the first frequency domain resource portion, and the resource location of the first resource is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

4. The method as described in claim 3, characterized in that, In the frequency domain, the resource location of the first resource relative to the resource location of the SSB is associated with the resource location of the second frequency domain resource relative to the resource location of the SSB.

5. The method as described in claim 4, characterized in that, The resource location of the first resource and the resource location of the second frequency domain resource portion are located on the same side of the resource location of the SSB in the frequency domain.

6. The method according to any one of claims 3-5, characterized in that, The first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: The first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; The other frequency domain ranges refer to the frequency domain ranges other than the first frequency domain range in the second frequency domain resource portion.

7. The method according to any one of claims 1-6, characterized in that, The method further includes: The terminal device receives first configuration information sent by the network device, the first configuration information being used to configure the frequency domain resources of each of the plurality of frequency domain resource portions.

8. The method as described in claim 1, characterized in that, The initial control resource set is used to transmit downlink control information (DCI). If the terminal device detects the DCI in the first resource, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource. and / or If the terminal device does not detect the DCI in the first resource, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are outside the first resource.

9. The method as described in claim 8, characterized in that, The method further includes: If the terminal device does not detect the DCI in the first resource, the method also includes: The terminal device detects the DCI in multiple resources.

10. The method as described in claim 9, characterized in that, The terminal device detects the DCI in the plurality of resources, including: The terminal device detects the DCI in the plurality of resources in ascending order of frequency domain resources.

11. The method as described in claim 9 or 10, characterized in that, The multiple resources satisfy one or more of the following: The multiple resources are located on the same side of the SSB in the frequency domain; Each pair of resources is adjacent in the frequency domain; The frequency domain range of each of the multiple resources is the same.

12. The method according to any one of claims 1-11, characterized in that, The first frequency domain resource portion is used to carry the SSB.

13. The method according to any one of claims 1-12, characterized in that, The multiplexing method between the first resource and the resource transmitting the SSB includes Time Division Multiplexing (TDM) and / or Frequency Division Multiplexing (FDM).

14. The method according to any one of claims 1-13, characterized in that, The first resource is adjacent to the resource transmitting the SSB in the time domain, or the first resource is adjacent to the resource transmitting the SSB in the frequency domain.

15. The method according to any one of claims 1-14, characterized in that, The first information is carried in the main information block (MIB) carried by the SSB.

16. The method according to any one of claims 1-15, characterized in that, The initial control resource set contains the physical downlink control channel (PDCCH) search space containing scheduling system information.

17. The method as described in claim 16, characterized in that, The PDCCH search space is a common search space of type 0PDCCH.

18. The method according to any one of claims 1-17, characterized in that, The initial control resource set is CORESET#0.

19. The method according to any one of claims 1-18, characterized in that, The initial downlink BWP is the first downlink BWP activated after cell search.

20. The method according to any one of claims 1-19, characterized in that, At least two of the plurality of frequency domain resource portions are not contiguous in the frequency domain; and / or Each of the multiple frequency domain resource portions corresponds to one physical carrier.

21. A method for wireless communication, characterized in that, include: A network device sends a Synchronization Broadcast Block (SSB) to a terminal device via a first carrier. The first carrier includes multiple frequency domain resource portions. The first information in the SSB is used to indicate the resource location of a first resource in the first carrier. Wherein, if the first resource is located within the first frequency domain resource portion of the plurality of frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion BWP is located within the first frequency domain resource portion.

22. The method as described in claim 21, characterized in that, The resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource.

23. The method as described in claim 21 or 22, characterized in that, The plurality of frequency domain resource portions include a second frequency domain resource portion. If some or all of the resources in the first resource are located outside the first frequency domain resource portion, and the resource location of the first resource is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

24. The method as described in claim 23, characterized in that, In the frequency domain, the resource location of the first resource relative to the resource location of the SSB is associated with the resource location of the second frequency domain resource relative to the resource location of the SSB.

25. The method as described in claim 24, characterized in that, The resource location of the first resource and the resource location of the second frequency domain resource portion are located on the same side of the resource location of the SSB in the frequency domain.

26. The method according to any one of claims 23-25, characterized in that, The first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: The first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; The other frequency domain ranges refer to the frequency domain ranges other than the first frequency domain range in the second frequency domain resource portion.

27. The method according to any one of claims 21-26, characterized in that, The method further includes: The network device sends first configuration information to the terminal device, the first configuration information being used to configure the frequency domain resources of each of the plurality of frequency domain resource portions.

28. The method according to any one of claims 21-27, characterized in that, The first frequency domain resource portion is used to carry the SSB.

29. The method according to any one of claims 21-28, characterized in that, The multiplexing method between the first resource and the resource transmitting the SSB includes Time Division Multiplexing (TDM) and / or Frequency Division Multiplexing (FDM).

30. The method according to any one of claims 21-29, characterized in that, The first resource is adjacent to the resource transmitting the SSB in the time domain, or the first resource is adjacent to the resource transmitting the SSB in the frequency domain.

31. The method according to any one of claims 21-30, characterized in that, The first information is carried in the main information block (MIB) carried by the SSB.

32. The method according to any one of claims 21-31, characterized in that, The initial control resource set contains the physical downlink control channel (PDCCH) search space containing scheduling system information.

33. The method as described in claim 32, characterized in that, The PDCCH search space is a common search space of type 0PDCCH.

34. The method according to any one of claims 21-33, characterized in that, The initial control resource set is CORESET#0.

35. The method according to any one of claims 21-34, characterized in that, The initial downlink BWP is the first downlink BWP activated after cell search.

36. The method according to any one of claims 21-35, characterized in that, At least two of the plurality of frequency domain resource portions are not contiguous in the frequency domain; and / or Each of the multiple frequency domain resource portions corresponds to one physical carrier.

37. A terminal device, characterized in that, include: The receiving unit is configured to receive a Synchronization Broadcast Block (SSB) transmitted by a network device via a first carrier. The first carrier includes multiple frequency domain resource portions, and first information in the SSB is used to indicate the resource location of a first resource in the first carrier. If the first resource portion or all of it is located within the first frequency domain resource portion among the plurality of frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion BWP is located within the first frequency domain resource portion.

38. The terminal device as described in claim 37, characterized in that, The resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource.

39. The terminal device as described in claim 37 or 38, characterized in that, The plurality of frequency domain resource portions include a second frequency domain resource portion. If some or all of the resources in the first resource are located outside the first frequency domain resource portion, and the resource location of the first resource is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

40. The terminal device as described in claim 39, characterized in that, In the frequency domain, the resource location of the first resource relative to the resource location of the SSB is associated with the resource location of the second frequency domain resource relative to the resource location of the SSB.

41. The terminal device as described in claim 40, characterized in that, The resource location of the first resource and the resource location of the second frequency domain resource portion are located on the same side of the resource location of the SSB in the frequency domain.

42. The terminal device as described in any one of claims 39-41, characterized in that, The first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: The first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; The other frequency domain ranges refer to the frequency domain ranges other than the first frequency domain range in the second frequency domain resource portion.

43. The terminal device as described in any one of claims 37-42, characterized in that, The receiving unit is further configured to receive first configuration information sent by the network device, wherein the first configuration information is used to configure the frequency domain resources of each frequency domain resource portion among the plurality of frequency domain resource portions.

44. The terminal device as described in claim 37, characterized in that, The initial control resource set is used to transmit downlink control information (DCI). If the terminal device detects the DCI in the first resource, the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource. and / or If the terminal device does not detect the DCI in the first resource, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are outside the first resource.

45. The terminal device as described in claim 44, characterized in that, The terminal device does not detect the DCI in the first resource, and the terminal device further includes: A processing unit for detecting the DCI in multiple resources.

46. ​​The terminal device as described in claim 45, characterized in that, The processing unit is further configured to detect the DCI in the plurality of resources in ascending order of frequency domain resources.

47. The terminal device as described in claim 45 or 46, characterized in that, The multiple resources satisfy one or more of the following: The multiple resources are located on the same side of the SSB in the frequency domain; Each pair of resources is adjacent in the frequency domain; The frequency domain range of each of the multiple resources is the same.

48. The terminal device as described in any one of claims 37-47, characterized in that, The first frequency domain resource portion is used to carry the SSB.

49. The terminal device as described in any one of claims 37-48, characterized in that, The multiplexing method between the first resource and the resource transmitting the SSB includes Time Division Multiplexing (TDM) and / or Frequency Division Multiplexing (FDM).

50. The terminal device as described in any one of claims 37-49, characterized in that, The first resource is adjacent to the resource transmitting the SSB in the time domain, or the first resource is adjacent to the resource transmitting the SSB in the frequency domain.

51. The terminal device as described in any one of claims 37-50, characterized in that, The first information is carried in the main information block (MIB) carried by the SSB.

52. The terminal device as described in any one of claims 37-51, characterized in that, The initial control resource set contains the physical downlink control channel (PDCCH) search space containing scheduling system information.

53. The terminal device as described in claim 52, characterized in that, The PDCCH search space is a common search space of type 0PDCCH.

54. The terminal device as described in any one of claims 37-53, characterized in that, The initial control resource set is CORESET#0.

55. The terminal device as described in any one of claims 37-54, characterized in that, The initial downlink BWP is the first downlink BWP activated after cell search.

56. The terminal device as described in any one of claims 37-55, characterized in that, At least two of the plurality of frequency domain resource portions are not contiguous in the frequency domain; and / or Each of the multiple frequency domain resource portions corresponds to one physical carrier.

57. A network device, characterized in that, include: The transmitting unit transmits a Synchronization Broadcast Block (SSB) to the terminal device via a first carrier. The first carrier includes multiple frequency domain resource portions, and the first information in the SSB is used to indicate the resource location of a first resource in the first carrier. Wherein, if the first resource is located within the first frequency domain resource portion of the plurality of frequency domain resource portions, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink bandwidth portion BWP is located within the first frequency domain resource portion.

58. The network device as described in claim 57, characterized in that, The resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the first resource.

59. The network device as described in claim 57 or 58, characterized in that, The plurality of frequency domain resource portions include a second frequency domain resource portion. If some or all of the resources in the first resource are located outside the first frequency domain resource portion, and the resource location of the first resource is associated with the resource location of the second frequency domain resource portion, then the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP are located within the second frequency domain resource portion.

60. The network device as described in claim 59, characterized in that, In the frequency domain, the resource location of the first resource relative to the resource location of the SSB is associated with the resource location of the second frequency domain resource relative to the resource location of the SSB.

61. The network device as described in claim 60, characterized in that, The resource location of the first resource and the resource location of the second frequency domain resource portion are located on the same side of the resource location of the SSB in the frequency domain.

62. The network device as described in any one of claims 59-61, characterized in that, The first frequency domain range corresponding to the resource location of the initial control resource set and / or the bandwidth of the initial downlink BWP in the second frequency domain resource portion satisfies one of the following: The first frequency domain range is greater than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is less than or equal to other frequency domain ranges in the second frequency domain resource portion; The first frequency domain range is located in the center frequency domain range of the second frequency domain resource portion; The other frequency domain ranges refer to the frequency domain ranges other than the first frequency domain range in the second frequency domain resource portion.

63. The network device as described in any one of claims 57-62, characterized in that, The sending unit is further configured to send first configuration information to the terminal device, the first configuration information being used to configure the frequency domain resources of each frequency domain resource portion among the plurality of frequency domain resource portions.

64. The network device as described in any one of claims 57-63, characterized in that, The first frequency domain resource portion is used to carry the SSB.

65. The network device as described in any one of claims 57-64, characterized in that, The multiplexing method between the first resource and the resource transmitting the SSB includes Time Division Multiplexing (TDM) and / or Frequency Division Multiplexing (FDM).

66. The network device as described in any one of claims 57-65, characterized in that, The first resource is adjacent to the resource transmitting the SSB in the time domain, or the first resource is adjacent to the resource transmitting the SSB in the frequency domain.

67. The network device as described in any one of claims 57-66, characterized in that, The first information is carried in the main information block (MIB) carried by the SSB.

68. The network device as described in any one of claims 57-67, characterized in that, The initial control resource set contains the physical downlink control channel (PDCCH) search space containing scheduling system information.

69. The network device as described in claim 68, characterized in that, The PDCCH search space is a common search space of type 0PDCCH.

70. The network device as described in any one of claims 57-69, characterized in that, The initial control resource set is CORESET#0.

71. The network device as described in any one of claims 57-70, characterized in that, The initial downlink BWP is the first downlink BWP activated after cell search.

72. The network device as described in any one of claims 57-71, characterized in that, At least two of the plurality of frequency domain resource portions are not contiguous in the frequency domain; and / or Each of the multiple frequency domain resource portions corresponds to one physical carrier.

73. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-20.

74. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 21-36.

75. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-36.

76. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-36.

77. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-36.

78. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-36.

79. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-36.

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