Wireless communication method and apparatus, and device, chip and storage medium

Abstract

A wireless communication method and apparatus, and a device, a chip and a storage medium, which relate to the technical field of communications. The method comprises: a terminal device determining first auxiliary information on the basis of a received first-type SSB, wherein the first-type SSB is configured to determine the first auxiliary information, and the first auxiliary information is configured to determine a target second-type SSB (310); and the terminal device receiving the target second-type SSB on the basis of the first auxiliary information (320). By means of the method, the number of candidate frequency points that the terminal device needs to blindly detect can be reduced, thereby reducing an initial access latency of the terminal device. In addition, different second-type SSBs may be present in a system or a cell, and the different second-type SSBs may be used for terminal devices having different functions or capability sets, or for different vertical services, or for different spectrum resources, or for different RATs, thereby helping to reduce the design complexity of the system.

Description

Wireless communication methods, devices, equipment, chips and storage media Technical Field

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

[0002] In a cell of an NR (New Radio) system, network equipment can use the same spectrum resources to serve any terminal device that supports any service (e.g., compact terminal, eMBB (Enhanced Mobile Broadband) terminal, or NTN (Non-Terrestrial Networks) terminal).

[0003] This leads to the complexity of NR system design. Optimizing system design and the initial access process for terminal devices within a cell remains a problem to be solved in future communication systems. Summary of the Invention

[0004] This application provides a wireless communication method, apparatus, device, chip, and storage medium. The technical solutions provided by this application are as follows.

[0005] According to one aspect of the embodiments of this application, a wireless communication method is provided, the method being executed by a terminal device, the method comprising:

[0006] Based on the received first type of synchronization signal block (SSB), first auxiliary information is determined, wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine the target second type of SSB;

[0007] Based on the first auxiliary information, the target second type of SSB is received.

[0008] According to one aspect of the embodiments of this application, a wireless communication method is provided, the method being performed by a network device, the method comprising:

[0009] Send a first type of synchronization signal block (SSB), the first type of SSB being used by the terminal device to determine first auxiliary information, the first information being used to determine a target second type of SSB;

[0010] Based on the first auxiliary information, the target's second type of SSB is sent.

[0011] According to one aspect of the embodiments of this application, a wireless communication device is provided, the device comprising:

[0012] The processing module is configured to determine first auxiliary information based on the received first type of synchronization signal block (SSB), wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine the target second type of SSB;

[0013] The receiving module is configured to receive the target's second type of SSB based on the first auxiliary information.

[0014] According to one aspect of the embodiments of this application, a wireless communication device is provided, the device comprising:

[0015] The transmitting module is used to transmit a first type of synchronization signal block (SSB), the first type of SSB being used by the terminal device to determine first auxiliary information, and the first information being used to determine a target second type of SSB;

[0016] The sending module is further configured to send the target's second type of SSB based on the first auxiliary information.

[0017] According to one aspect of the embodiments of this application, a communication device is provided, the communication device including a processor and a memory, the memory storing a computer program, the processor executing the computer program to implement the wireless communication method on the terminal device side or the wireless communication method on the network device side.

[0018] According to one aspect of the embodiments of this application, a computer-readable storage medium is provided, the storage medium storing a computer program, the computer program being executed by a processor to implement the wireless communication method on the terminal device side or the wireless communication method on the network device side described above.

[0019] According to one aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is running, are used to implement the wireless communication method on the terminal device side or the wireless communication method on the network device side.

[0020] According to one aspect of the embodiments of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, wherein a processor reads from the computer-readable storage medium and executes the computer instructions to implement the wireless communication method on the terminal device side or the wireless communication method on the network device side described above.

[0021] The technical solutions provided in this application embodiment may have the following beneficial effects:

[0022] To reduce the initial access latency of terminal devices, the process of searching for a suitable cell is divided into two steps. First, a first-type SSB is searched within a small set of candidate frequency points. After finding the first-type SSB, auxiliary information for detecting a second-type SSB is obtained based on the first-type SSB, and the second-type SSB is detected or received based on this auxiliary information. This method reduces the number of candidate frequency points that the terminal device needs to blindly detect, thereby reducing the initial access latency. Furthermore, different second-type SSBs can exist in the system or cell. Different second-type SSBs can be used for terminal devices with different functional or capability sets, different vertical services, different spectrum resources, or different RATs, thus helping to reduce the design complexity of the system. Attached Figure Description

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

[0024] Figure 2 is a schematic diagram of a fragmented spectrum provided in one embodiment of this application;

[0025] Figure 3 is a flowchart of a wireless communication method provided in an embodiment of this application;

[0026] Figure 4 is a schematic diagram of determining first auxiliary information based on a first type of SSB according to an embodiment of this application;

[0027] Figure 5 is a schematic diagram of determining first auxiliary information based on a first type of SSB according to another embodiment of this application;

[0028] Figure 6 is a schematic diagram of determining first auxiliary information based on a first type of SSB according to another embodiment of this application;

[0029] Figure 7 is a schematic diagram of a terminal device accessing a cell according to an embodiment of this application;

[0030] Figure 8 is a schematic diagram of a terminal device accessing a cell according to another embodiment of this application;

[0031] Figure 9 is a schematic diagram of a terminal device accessing a cell according to another embodiment of this application;

[0032] Figure 10 is a flowchart of a wireless communication method provided in another embodiment of this application;

[0033] Figure 11 is a block diagram of a wireless communication device provided in an embodiment of this application;

[0034] Figure 12 is a block diagram of a wireless communication device provided in another embodiment of this application;

[0035] Figure 13 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0036] Figure 14 is a schematic diagram of the structure of a network device provided in one embodiment of this application. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0038] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0039] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). Fidelity (WiFi), 5th-Generation (5G) systems, B5G (Beyound 5G) systems, 6th-Generation (6G) systems, or other communication systems.

[0040] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0041] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0042] The communication system in this application embodiment can be applied to unlicensed spectrum, wherein unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum, wherein licensed spectrum can also be considered as non-shared spectrum.

[0043] The embodiments of this application can be applied to both non-terrestrial networks (NTN) and terrestrial networks (TN). NTN typically uses satellite communication to provide communication services to terrestrial users. Currently, NTN systems include NR-NTN and IoT-NTN systems, and other NTN systems may be included in the future.

[0044] Please refer to Figure 1, which shows a schematic diagram of a network architecture 100 provided in one embodiment of this application. The network architecture 100 may include: a terminal device 10, an access network device 20, and a core network element 30.

[0045] Terminal device 10 can refer to UE (User Equipment), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, user agent, or user equipment. In some embodiments, terminal device 10 can also be a cellular phone, cordless phone, SIP (Session Initiation Protocol) phone, WLL (Wireless Local Loop) station, PDA (Personal Digital Assistant), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in 5GS (5th Generation System), or terminal device in the future evolved PLMN (Public Land Mobile Network), etc., and this application embodiment is not limited to these. For ease of description, the devices mentioned above are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed within the cell managed by each access network device 20. Terminal equipment can also be simply referred to as terminal or UE, the meaning of which can be understood by those skilled in the art.

[0046] Access network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal device 10. Access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the name of the device with access network device functionality may differ; for example, in a 5G NR system, it is called gNodeB or gNB. As communication technologies evolve, the name "access network device" may change. For ease of description, in this embodiment, the aforementioned devices providing wireless communication functionality to terminal device 10 are collectively referred to as access network devices. In some embodiments, a communication relationship can be established between terminal device 10 and core network element 30 through access network device 20. For example, in an LTE (Long Term Evolution) system, access network device 20 may be one or more eNodeBs in an EUTRAN (Evolved Universal Terrestrial Radio Access Network) or EUTRAN; in a 5G NR system, access network device 20 may be one or more gNBs in a RAN (Radio Access Network). In the embodiments of this application, unless otherwise specified, the term "network device" refers to access network device 20, such as a base station.

[0047] Core network element 30 is a network element deployed in the core network. Its main functions are to provide user connectivity, manage users, and bear services, serving as an interface to external networks. For example, core network elements in a 5G NR system may include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function) entities, and SMF (Session Management Function) entities.

[0048] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via some air interface technology, such as the NG interface in a 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via some air interface technology, such as the Uu interface.

[0049] The "5G NR system" in this application embodiment can also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in this application embodiment can be applied to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (such as B5G (Beyond 5G, a fifth-generation mobile communication technology) systems, 6G systems (6th Generation System, a sixth-generation mobile communication system)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems. This application does not limit these applications.

[0050] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0051] The initial access process and fragment spectrum aggregation in the NR system are described below. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0052] 1. Initial Access Procedure in NR System

[0053] In NR systems, the initial access process for terminal devices can be completed by detecting synchronization signal blocks (SSBs or SS / PBCH blocks) on the GSCN (Global Synchronization Channel Number) (also known as the Sync Raster). During the initial access process, the terminal device determines the possible time-frequency locations of SSBs using a predefined set of GSCNs, attempts to search for SSBs, and obtains time and frequency synchronization, radio frame timing, and cell IDs (identifiers) through the detected SSBs.

[0054] After detecting an SSB, the terminal device can determine the configuration of the Type0-PDCCH (Physical Downlink Control Channel) CSS (Common Search Space) set through the MIB (Master Indication Block) message in the SSB. The terminal device can receive the network device's scheduling of SIB1 (System Information Block) messages by listening to the Type0-PDCCH CSS set. Both the MIB and SIB1 messages include the serving cell's system configuration information. Furthermore, the terminal device can receive the network device's scheduling of other system messages besides SIB1 messages by listening to the Type0A-PDCCH CSS set, receive the network device's scheduling of paging messages by listening to the Type2-PDCCH CSS set, and receive the Paging Early Indication (PEI) information for paging messages sent by the network device by listening to the Type2A-PDCCH CSS set.

[0055] The terminal device can also obtain the resource configuration of PRACH (Physical Random Access Channel) transmission opportunities (RO) during the random access process based on the received system message SIB1 from the cell. Based on the RO resources configured by the network device, the terminal device can initiate random access to the network device or request the sending of system messages.

[0056] 2. Fragmented Spectrum Aggregation

[0057] In low-frequency bands across different countries or regions, multiple fragmented spectrum block resources exist, as shown in Figure 2. In Figure 2, identical fills indicate spectrum used by the same operator, and each block represents a spectrum size of 5MHz. The first row of Figure 2 shows the spectrum block resources of multiple fragments corresponding to PCS (Personal Communications Service). The second row shows the spectrum block resources of multiple fragments corresponding to BRS (Broadband Radio Service). The third row shows the spectrum block resources of multiple fragments corresponding to AWS (Advanced Wireless Service). Each fragmented spectrum block can be viewed as a CC (Component Carrier), meaning one CC corresponds to a continuous segment of spectrum resources.

[0058] In NR system deployment, each carrier cluster (CC) is networked as a cell. In NR systems, the number of radio frequency chains (RF chains) supported by terminal devices is limited and unlikely to increase significantly. Since each CC requires an independent RF link, the data transmission rate of the terminal device is limited by the number of CCs supporting carrier aggregation (CA). To utilize the spectrum resources of multiple fragments in low-frequency bands, NR systems have begun to explore the scenario of multiple carriers sharing a single RF link. For example, for multiple CCs in a single downlink band with a frequency range of less than or equal to 100MHz, RF link sharing can be used for data transmission. This allows the terminal device to support data transmission with the same bandwidth as before using fewer RF links, thereby enabling the terminal device to support data transmission with a larger bandwidth without increasing the number of RF links, thus improving the data transmission rate. When designing future wireless communication systems, such as 6G communication systems, it is also necessary to consider the fragment spectrum aggregation feature to design a wireless communication system that rationally utilizes this spectrum aggregation characteristic. For example, in a 6G communication system, a cell may include the resources of multiple CCs, or multiple CCs are networked as a single cell.

[0059] In an NR system, terminal devices need to blindly detect SSBs on GSCNs to search for a suitable cell to camp on. During this process, since there is no prior information, the terminal device needs to attempt to detect all candidate GSCNs. On each GSCN, the terminal device must detect for a certain duration according to a preset assumption (e.g., assuming the network device sends SSBs at a period of 20ms) until a suitable cell is found. Assuming there are N candidate GSCNs and L is the detection duration for each GSCN, the total detection duration is N*L. When the number of candidate GSCNs N is large, the search duration N*L for the terminal device will also increase accordingly, resulting in a larger initial access latency for the terminal device.

[0060] Furthermore, within a single cell of an NR system, network equipment can utilize the same spectrum resources to serve all terminal devices, regardless of the type of service they support (e.g., compact terminals, eMBB (Enhanced Mobile Broadband) terminals, or NTN terminals). This leads to the complexity of NR system design.

[0061] In future communication systems (such as 6G systems), how to optimize system design and the initial access process of terminal devices in a cell is a problem to be solved.

[0062] Please refer to Figure 3, which shows a flowchart of a wireless communication method provided in one embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include at least one of the following steps 310-320.

[0063] Step 310: The terminal device determines first auxiliary information based on the received first type of SSB, wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine the target second type of SSB.

[0064] Step 320: The terminal device receives the target second type SSB based on the first auxiliary information.

[0065] In this embodiment, to reduce the initial access latency of the terminal device, the process of searching for a suitable cell by the terminal device is divided into two steps. First, a first type of SSB is searched in a small set of candidate frequency points (e.g., a GSCN set). After the first type of SSB is found, auxiliary information for detecting a second type of SSB is obtained based on the first type of SSB, and the second type of SSB is detected or received based on the auxiliary information. This method reduces the number of candidate frequency points that the terminal device needs to blindly detect, thereby reducing the initial access latency of the terminal device. Furthermore, different second types of SSBs can exist in the system or cell. Different second types of SSBs can be used for different terminal devices, different vertical services, or different frequency domain resources, thereby helping to reduce the complexity of system design.

[0066] In some embodiments, the first type of SSB includes at least one of the following: an SSB that is detected by terminal devices that support the target RAT (Radio Access Technology), an SSB that transmits on a frequency point in a preset candidate frequency point set, and a minimum capability SSB.

[0067] In some embodiments, the target RAT includes at least one of the following: 6G RAT, 5G RAT (e.g., NG-RAN, Next Generation Radio Access Network), 4G RAT (e.g., E-UTRAN, Evolved UMTS Terrestrial Radio Access Network), 3G RAT (e.g., UTRAN, UMTS Terrestrial Radio Access Network), and 2G RAT (e.g., GSM, Global System for Mobile Communications; or GSM COMPACT). Exemplarily, if the target RAT includes 6G RAT, then the first type of SSB includes SSBs that are detected by all terminal devices supporting 6G RAT. Exemplarily, if the target RAT includes both 6G RAT and 5G RAT, then the first type of SSB includes SSBs that are detected by all terminal devices supporting 6G RAT and / or 5G RAT.

[0068] In some embodiments, since the terminal device typically blindly detects SSBs based on frequencies in a preset candidate frequency set during the initial search, the SSBs transmitted on frequencies in the preset candidate frequency set can also be understood as the SSBs blindly detected and searched by the terminal device. For example, the GSCN set in a specific frequency band includes P GSCNs, and the terminal device detects SSBs only on these P GSCNs in that frequency band, where P is a positive integer; the SSBs detected by the terminal device on the GSCNs are SSBs of the first type.

[0069] In some embodiments, the number of frequency points in the preset candidate frequency point set is less than the number of frequency points in the GSCN set used in the initial access procedure of the existing NR system. For example, the frequency points in the preset candidate frequency point set are a subset of frequency points randomly selected or sampled based on predefined rules from the GSCN set used in the initial access procedure of the existing NR system. For example, the GSCN set used in the initial access procedure of the existing NR system contains 100 frequency points, while the preset candidate frequency point set used in this application contains 10 frequency points.

[0070] In some embodiments, the minimum capability SSB includes: an SSB that the terminal device with the lowest capability in the network system corresponding to the target RAT also has detection capability. For example, assuming the target RAT is 6G, and assuming that there are 3M bandwidth SSBs and 3.6M bandwidth SSBs in the 6G network system, then the minimum capability SSB is the 3M bandwidth SSB.

[0071] As mentioned earlier, the initial cell search process of the terminal device is completed in two steps: first, it searches for a first type of SSB on the frequency points (e.g., synchronization grid) in the candidate frequency point set; after receiving the first type of SSB, it obtains auxiliary information to assist in detecting a second type of SSB based on the first type of SSB, and detects the second type of SSB based on the auxiliary information.

[0072] In some embodiments, a first type of SSB is used to determine N auxiliary information items, where N is a positive integer. The N auxiliary information items include the first auxiliary information. In this case, the first type of SSB sent by the network device can be used to determine the N auxiliary information items.

[0073] In some embodiments, the SSB transmission opportunity corresponding to the first type of SSB is used to determine N auxiliary information items, wherein the SSB transmission opportunity includes N SSBs, and each of the N SSBs is used to determine one auxiliary information item, where N is a positive integer. The N auxiliary information items include first auxiliary information. In this case, the network device sends N SSBs, which correspond one-to-one with the N auxiliary information items. One SSB is used to determine the auxiliary information corresponding to that SSB, and the value of N can be equal to 1 or greater than 1. The first type of SSB is one of the N SSBs, and this first type of SSB is used to determine the first auxiliary information item among the N auxiliary information items. The first auxiliary information item is the auxiliary information item corresponding to the first type of SSB among the N auxiliary information items.

[0074] In some embodiments, N auxiliary information pieces are used to determine N second-type SSBs; wherein each of the N auxiliary information pieces is used to determine one second-type SSB, and N is a positive integer. The N auxiliary information pieces include first auxiliary information, which is one of the N auxiliary information pieces used to determine a target second-type SSB. The target second-type SSB is one of the N second-type SSBs of the same second type, and the target second-type SSB is the second-type SSB of the N second-type SSBs that corresponds to the first auxiliary information. In this case, one auxiliary information piece is used to determine one second-type SSB.

[0075] In some embodiments, the first auxiliary information is used to determine N second-type SSBs, including the target second-type SSB, where N is a positive integer. In this case, one auxiliary information (such as the first auxiliary information) is used to determine the N second-type SSBs, and the value of N can be equal to 1 or greater than 1.

[0076] In some embodiments, the second type of SSB includes: an SSB determined based on auxiliary information.

[0077] In some embodiments, the second type of SSB includes at least one of the following: an SSB dedicated to a specific set of functions or capabilities, an SSB dedicated to a specific service, an SSB dedicated to a specific spectrum resource, or an SSB dedicated to a specific RAT.

[0078] In some embodiments, a particular set of functions or capabilities includes at least one of the following: receive bandwidth, transmit bandwidth, receive antenna, transmit antenna, number of receive ports, number of transmit ports, number of transmit layers, maximum supported MCS (Modulation and Coding Scheme), maximum data rate, massive MIMO (Multiple Input Multiple Output), millimeter wave, SBFD (Subband non-overlapping Full Duplex), unlicensed spectrum, positioning, low power consumption, multi-carrier, and IAB (Integrated Access Backhaul).

[0079] For example, the aforementioned N second-type SSBs include SSBs dedicated to a specific set of functions or capabilities. For instance, the N second-type SSBs include SSB#1 of the second type and SSB#2 of the second type. Optionally, SSB#1 of the second type is the SSB corresponding to the first set of functions or capabilities, and SSB#2 of the second type is the SSB corresponding to the second set of functions or capabilities, where the first set of functions or capabilities and the second set of functions or capabilities are two different sets of functions or capabilities. Optionally, SSB#1 of the second type is the SSB corresponding to the first set of functions or capabilities, and SSB#2 of the second type is the SSB that does not correspond to the first set of functions or capabilities, where the non-first set of functions or capabilities refers to other sets of functions or capabilities besides the first set of functions or capabilities.

[0080] For example, the first set of functions or capabilities may also be referred to as a small function core or a small core. For example, a small core may refer to: the terminal device receiving or transmitting signals through the first set of UE functions / capabilities, or the terminal device receiving / transmitting a first set of signals, or the terminal device receiving / transmitting signals within a first set of resources, or the terminal device receiving / transmitting signals through a small function core.

[0081] For example, the second set of functions or capabilities may also be referred to as a large functional core or a large core. For example, a large core may refer to: the terminal device receiving or transmitting signals through the second UE function / capability set, or the terminal device receiving / transmitting a second signal set, or the terminal device receiving / transmitting signals within a second resource set, or the terminal device receiving / transmitting signals through a large functional core.

[0082] Optionally, at least one function / capability in the second set of functions or capabilities differs from the first set of functions or capabilities, such as maximum receive or transmit bandwidth; the time-frequency resources occupied by the second set of signals, or the time-frequency resources contained in the second set of resources differ from the first set of signals / resources.

[0083] Optionally, the same terminal device can switch between a first set of functions or capabilities and a second set of functions or capabilities, or support only the first set of functions or capabilities; the same terminal device can receive / transmit different sets of signals at different times, or receive / transmit only the first set of signals; the same terminal device can receive / transmit signals in different resource sets at different times, or receive / transmit signals only within the first resource set.

[0084] Optionally, the non-first set of functions or capabilities includes: the terminal device receiving or transmitting signals through capabilities or functions beyond the first set of functions or capabilities; or the terminal device receiving / transmitting signals outside the first set of signals; or the terminal device receiving / transmitting signals within resources outside the first set of resources.

[0085] In some embodiments, a specific service includes at least one of the following: eMBB, mMTC (Massive Machine Type Communication), IoT (Internet of Things), uRLLC (Ultra Reliable & Low Latency Communication), HRLLC (Hyper Reliable Low Latency Communication), NTN, and Sidelink.

[0086] For example, the aforementioned N second-type SSBs include SSBs dedicated to specific services. For instance, the N second-type SSBs include SSB#1 of second type and SSB#2 of second type. Optionally, SSB#1 of second type is an SSB dedicated to a first service, and SSB#2 of second type is an SSB dedicated to a second service; the first service and the second service are two different services. For example, the first service is an eMBB service, and the second service is an IoT service.

[0087] For example, the aforementioned N second-type SSBs include SSBs dedicated to specific spectrum resources. For instance, the N second-type SSBs include SSB#1 of the second type and SSB#2 of the second type. Optionally, SSB#1 of the second type is an SSB dedicated to a first spectrum resource, and SSB#2 of the second type is an SSB dedicated to a second spectrum resource; the first spectrum resource and the second spectrum resource are two different spectrum resources. Here, spectrum resources can also be understood as a set of frequency domain units.

[0088] In some embodiments, a particular RAT includes at least one of the following: 6G RAT, 5G RAT, 4G RAT, 3G RAT, or 2G RAT.

[0089] For example, the aforementioned N second-type SSBs include SSBs dedicated to a specific RAT. For instance, the N second-type SSBs include SSB#1 of second type and SSB#2 of second type. Optionally, SSB#1 of second type is an SSB dedicated to 6G RAT, and SSB#2 of second type is an SSB dedicated to 5G RAT; 6G RAT and 5G RAT are two different RATs.

[0090] In some embodiments, the relationship between the first type of SSB and the N second type of SSBs includes one of the following: the first type of SSB and the N second type of SSBs are SSBs in the same cell; or, the first type of SSB and the N second type of SSBs are SSBs in different cells; or, a portion of the first type of SSB and the N second type of SSBs are SSBs in the same cell, and another portion of the first type of SSB and the N second type of SSBs are SSBs in different cells.

[0091] For example, N second-type SSBs include second-type SSB#1, second-type SSB#2, and second-type SSB#3. When the first-type SSB and the N second-type SSBs are SSBs in the same cell, then the first-type SSB, second-type SSB#1, second-type SSB#2, and second-type SSB#3 are SSBs in the same cell. When the first-type SSB and the N second-type SSBs are SSBs in different cells, then the first-type SSB, second-type SSB#1, second-type SSB#2, and second-type SSB#3 are SSBs in different cells. In the case where some of the first-type SSBs and the N second-type SSBs are SSBs in the same cell, and another portion of the first-type SSBs and the N second-type SSBs are SSBs in different cells, for example, the first-type SSB and second-type SSB#1 are SSBs in the same cell, while the first-type SSB, second-type SSB#2, and second-type SSB#3 are SSBs in different cells.

[0092] In some embodiments, the relationship between the first type of SSB and the N second type of SSBs includes one of the following: the first type of SSB and the N second type of SSBs are SSBs in different downlink frequency domain unit sets or different carriers; or, one of the second type of SSBs in the first type of SSB and the N second type of SSBs are SSBs in the same downlink frequency domain unit set or the same carrier, and the other second type of SSBs in the first type of SSB and the N second type of SSBs are SSBs in different downlink frequency domain unit sets or different carriers.

[0093] For example, N second-type SSBs include second-type SSB#1, second-type SSB#2, and second-type SSB#3. When the first-type SSB and the N second-type SSBs are SSBs in different downlink frequency domain unit sets or on different carriers, the first-type SSB, second-type SSB#1, second-type SSB#2, and second-type SSB#3 are SSBs in different downlink frequency domain unit sets, or the first-type SSB, second-type SSB#1, second-type SSB#2, and second-type SSB#3 are SSBs on different carriers. When one of the first-type SSBs and the N second-type SSBs is an SSB in the same downlink frequency domain unit set, and the first-type SSB and the other second-type SSBs in the N second-type SSBs are SSBs in different downlink frequency domain unit sets, for example, the first-type SSB and second-type SSB#1 are SSBs in the same downlink frequency domain unit set, while the first-type SSB and second-type SSB#2 and second-type SSB#3 are SSBs in different downlink frequency domain unit sets. In the case where one of the first type SSBs and N second type SSBs is an SSB on the same carrier, and the other second type SSBs among the first type SSBs and N second type SSBs are SSBs on different carriers, for example, the first type SSB and the second type SSB#1 are SSBs on the same carrier, and the first type SSB and the second type SSB#2 and the second type SSB#3 are SSBs on different carriers.

[0094] The downlink frequency domain unit set mentioned above is a set of frequency domain units used for downlink transmission. The frequency domain unit set includes one or more frequency domain units. A frequency domain unit can be understood as a partitioning unit of frequency domain resources. Optionally, a frequency domain unit is an RB (Resource Block) or a portion of bandwidth. The downlink frequency domain unit set includes one or more downlink frequency domain units, which are frequency domain units used for downlink transmission.

[0095] In some embodiments, when N is greater than 1, the relationship of the N second-type SSBs includes one of the following: the N second-type SSBs are SSBs in the same cell; or, the N second-type SSBs are SSBs in different cells; or, a portion of the N second-type SSBs are SSBs in the same cell, and another portion of the N second-type SSBs are SSBs in different cells.

[0096] In some embodiments, when N is greater than 1, the N second-type SSBs are SSBs in different frequency domain unit sets or different carriers.

[0097] Optionally, the same frequency domain unit set refers to a set of frequency domain units that, when the transmission directions are the same (e.g., all are downlink, or all are uplink, or all are TDD (Time Division Duplexing)), have at least two of the following three parameters being the same: start position, end position, and number of frequency domain units.

[0098] Optionally, different frequency domain unit sets refer to: when the transmission directions of the frequency domain unit sets are the same (e.g., all are downlink, or all are uplink, or all are TDD), at least two of the three parameters—start position, end position, and number of frequency domain units—are different; or, the transmission directions of the frequency domain unit sets are different.

[0099] In some embodiments, when N is greater than 1, any two SSBs of the second type among the N SSBs of the second type correspond to different SSB transmission opportunities. That is, different SSBs of the second type correspond to different SSB transmission opportunities.

[0100] In some embodiments, the SSB transmission opportunity corresponding to the first type of SSB is different from the SSB transmission opportunity corresponding to any one of the N second type of SSBs. That is, the first type of SSB and the second type of SSB correspond to different SSB transmission opportunities.

[0101] In some embodiments, when N is greater than 1, the time-frequency structures of the N second-type SSBs are the same.

[0102] In some embodiments, when N is greater than 1, at least two of the N second-type SSBs have different SSB time-frequency structures.

[0103] Optionally, the SSB time-frequency structure corresponding to the second type of SSB refers to the positional relationship of the REs (Resource Elements) mapped on the time-frequency resources of the PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), and PBCH included in the second type of SSB.

[0104] In some embodiments, the first type of SSB does not have the functionality of the second type of SSB.

[0105] In some embodiments, the first type of SSB has the functionality of another second type of SSB in addition to N second type SSBs.

[0106] In some embodiments, a first type of SSB has the functionality of one of N second type SSBs of the second type.

[0107] The function of the first type of SSB will be explained below.

[0108] In some embodiments, the first type of SSB is used to determine first auxiliary information, including one of the following (1) to (4).

[0109] (1) The first type of SSB carries the first auxiliary information.

[0110] For example, the first auxiliary information is carried in the PBCH (Physical Broadcast Channel) of the first type of SSB.

[0111] For example, the first type of SSB carries N auxiliary information, including the first auxiliary information, where N is a positive integer.

[0112] For example, the PBCH of the first type of SSB carries N auxiliary information.

[0113] In some embodiments, a first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set. The first time-frequency resource is used to receive first auxiliary information, including any one of the following (2) to (4). The first downlink frequency domain unit set is a set of downlink frequency domain units used for transmitting and receiving the first auxiliary information.

[0114] (2) The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set. The first time-frequency resource is used to transmit the PDSCH (Physical Downlink Shared Channel) carrying the first auxiliary information.

[0115] For example, the first time-frequency resource is used to transmit a first PDSCH, which carries first auxiliary information.

[0116] For example, the first time-frequency resource is used to transmit the first PDSCH, which carries N auxiliary information, including the first auxiliary information, where N is a positive integer.

[0117] For example, as shown in FIG4, a first type of SSB is used to determine a first time-frequency resource, the first time-frequency resource is used to transmit a first PDSCH, the first PDSCH carries N auxiliary information, the N auxiliary information includes the first auxiliary information, and N is a positive integer.

[0118] (3) The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set. The first time-frequency resource is used to transmit the PDCCH (Physical Downlink Control Channel) carrying the first auxiliary information.

[0119] For example, the first time-frequency resource is used to transmit a first PDCCH, which carries first auxiliary information.

[0120] For example, the first time-frequency resource is used to transmit the first PDCCH, which carries N auxiliary information, including the first auxiliary information, where N is a positive integer.

[0121] For example, as shown in FIG5, a first type of SSB is used to determine a first time-frequency resource, the first time-frequency resource is used to transmit a first PDCCH, the first PDCCH carries N auxiliary information, the N auxiliary information includes the first auxiliary information, and N is a positive integer.

[0122] (4) The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set. The first time-frequency resource is used to transmit the PDCCH that carries the first auxiliary information of the PDSCH.

[0123] For example, the first time-frequency resource is used to transmit the second PDCCH, the second PDCCH is used to schedule the second PDSCH, and the second PDSCH carries the first auxiliary information.

[0124] For example, the first time-frequency resource is used to transmit the second PDCCH, the second PDCCH is used to schedule the second PDSCH, the second PDSCH carries N auxiliary information, the N auxiliary information includes the first auxiliary information, and N is a positive integer.

[0125] For example, as shown in FIG6, a first type of SSB is used to determine a first time-frequency resource, the first time-frequency resource is used to transmit a second PDCCH, the second PDCCH is used to schedule a second PDSCH, and the second PDSCH carries N auxiliary information, including the first auxiliary information, where N is a positive integer.

[0126] In some embodiments, the first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain cell set, including both explicit and implicit determination methods. Optionally, the first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain cell set, including at least one of the following (1) to (3).

[0127] (1) The first type of SSB carries indication information for determining the first time-frequency resource.

[0128] For example, the bandwidth occupied by the first type of SSB (i.e., the first downlink frequency domain unit set) is preset, and the bandwidth occupied by the first type of SSB is the same as the downlink bandwidth corresponding to the first type of SSB (e.g., the starting position and bandwidth size are the same). The first time-frequency resource is the time-frequency resource in the downlink bandwidth corresponding to the first type of SSB. This indication information is used to determine the time domain position and / or frequency domain position of the first time-frequency resource in the downlink bandwidth.

[0129] (2) The first type of SSB carries indication information for determining the first downlink frequency domain cell set.

[0130] For example, the first type of SSB carries indication information for determining the first downlink frequency domain unit set and indication information for determining the first time-frequency resource. Based on the first type of SSB, the first downlink frequency domain unit set and the first time-frequency resource in the first downlink frequency domain unit set can be determined.

[0131] For example, the first type of SSB is used to determine the downlink bandwidth corresponding to the first type of SSB and the first time-frequency resource within that downlink bandwidth. That is, in this example, the first type of SSB also includes indication information for determining the downlink bandwidth corresponding to the first type of SSB.

[0132] (3) There is a mapping relationship between the time-frequency resource where the first type of SSB is located and the first time-frequency resource, or the first time-frequency resource is determined based on the time-frequency resource where the first type of SSB is located according to the preset rules.

[0133] For example, the bandwidth occupied by the first type of SSB is preset, the bandwidth occupied by the first type of SSB is the same as the downlink bandwidth corresponding to the first type of SSB, the first time-frequency resource is the time-frequency resource in the downlink bandwidth corresponding to the first type of SSB, and the positional relationship between the first time-frequency resource and the time-frequency resource where the first type of SSB is located is preset or determined by preset rules.

[0134] In some embodiments, a first type of SSB is used to determine at least one of the following: the time-domain location of the first time-frequency resource in the first downlink frequency domain unit set, the frequency-domain location of the first time-frequency resource in the first downlink frequency domain unit set, and the QCL (Quasi Co-Location) relationship corresponding to the first time-frequency resource; and / or, based on the first type of SSB, to receive first auxiliary information in the first downlink frequency domain unit set.

[0135] In some embodiments, the first type of SSB is used to determine N pieces of auxiliary information, including: the first type of SSB is used to determine one piece of auxiliary information, which includes the first auxiliary information.

[0136] For example, the auxiliary information used to determine the SSB of the first type includes first auxiliary information and second auxiliary information, the first auxiliary information is used to determine the SSB of the second type #1, and the second auxiliary information is used to determine the SSB of the second type #2.

[0137] In some embodiments, the first type of SSB is used to determine N pieces of auxiliary information, including: the first type of SSB is used to determine multiple pieces of auxiliary information, among which the first auxiliary information is included.

[0138] For example, a first type of SSB is used to determine two pieces of auxiliary information, namely a first auxiliary information and a second auxiliary information. The first auxiliary information is used to determine a second type of SSB#1, and the second auxiliary information is used to determine a second type of SSB#2.

[0139] The role of the first auxiliary information will be explained below.

[0140] In some embodiments, the first auxiliary information is used to determine the target second type of SSB, including: the first auxiliary information is used to determine at least one of the following (1) to (14).

[0141] (1) The frequency of the second type of SSB.

[0142] For example, the first auxiliary information includes indication information of the frequency point of the target second type SSB. For instance, the first auxiliary information includes the ARFCN (Absolute Radio Frequency Channel Number) information or GSCN information of the target second type SSB.

[0143] (2) Temporal location of the second type of SSB of the target.

[0144] For example, the first auxiliary information includes indication information of the temporal location of the target's second type of SSB.

[0145] (3) The cycle of the second type of target SSB.

[0146] For example, the first auxiliary information includes indication information of the cycle of the target second type of SSB.

[0147] (4) Index information of SSB of the second type of target.

[0148] For example, the first auxiliary information includes indication information of the index of the target second type SSB. For instance, the SSB index indication information included in the first auxiliary information is {SSB#0, SSB#1}, indicating that the index of the SSB transmitted by the target second type SSB is SSB#0 and SSB#1.

[0149] (5) SCS (Subcarrier Spacing) information of the target type II SSB.

[0150] For example, the first auxiliary information includes indication information of the SCS of the target second type SSB.

[0151] (6) Information on the second downlink frequency domain cell set corresponding to the second type of SSB of the target.

[0152] Optionally, the second downlink frequency domain unit set is a downlink frequency domain unit set used for transmitting and receiving target second type SSBs.

[0153] For example, the first auxiliary information includes indication information of the second downlink frequency domain unit set corresponding to the target second type SSB. This indication information can be used to indicate at least one of the following information related to the second downlink frequency domain unit set: the start position of the second downlink frequency domain unit set, the end position of the second downlink frequency domain unit set, the number of frequency domain units in the second downlink frequency domain unit set, the number and position of available frequency domain units in the second downlink frequency domain unit set, the number and position of unavailable frequency domain units in the second downlink frequency domain unit set, etc. For example, the first auxiliary information is used to indicate the offset value between the start position of the second downlink frequency domain unit set and the start or end position of the second downlink frequency domain unit set. Based on this offset value, the start position of the second downlink frequency domain unit set can be determined. As another example, the first auxiliary information is used to indicate the number of frequency domain units included in the second downlink frequency domain unit set. Based on the above two pieces of information, the terminal device can determine the position and size of the second downlink frequency domain unit set.

[0154] (7) SCS information of the second downlink frequency domain cell set corresponding to the second type of SSB of the target.

[0155] For example, the first auxiliary information includes indication information of the SCS information of the second downlink frequency domain cell set corresponding to the target second type of SSB.

[0156] (8) The type of SSB of the second type of target.

[0157] For example, the first auxiliary information includes indication information of the type of the target second type SSB. For instance, if multiple types of second type SSBs exist in the network, the indication information of the target second type SSB type is used to indicate which type of second type SSB the terminal device should detect or receive. For example, different types of second type SSBs can be associated with different sets of terminal device functions / capabilities; or, different types of second type SSBs can be associated with different services.

[0158] (9) Random access resource configuration information corresponding to the second type of SSB of the target.

[0159] The random access resource configuration information corresponding to the target second type SSB is used to determine the random access resources corresponding to the target second type SSB. For example, the random access resources include RO resources, and the first auxiliary information includes: indication information of the uplink bandwidth corresponding to the target second type SSB and RO resource configuration information in the uplink bandwidth corresponding to the target second type SSB. As another example, the random access resources include MsgA resources, and the first auxiliary information includes: indication information of the uplink bandwidth corresponding to the target second type SSB and MsgA resource configuration information in the uplink bandwidth corresponding to the target second type SSB.

[0160] (10) The first access prohibition information corresponding to the second type of SSB of the target, the first access prohibition information is used to indicate whether the terminal device is prohibited from detecting the second type of SSB of the target.

[0161] For example, the first auxiliary information includes first access denied (Bar) information, which is used to indicate whether to prohibit the terminal device from detecting the target second type of SSB.

[0162] (11) The cell identifier corresponding to the second type of SSB of the target.

[0163] For example, the first auxiliary information includes first cell identification information. The terminal device can determine the synchronization signal sequence corresponding to the target second type SSB based on the first cell identification information, and thus detect the target second type SSB based on the synchronization signal sequence.

[0164] (12) Indication information on whether the cell identifier corresponding to the second type of SSB is the same as the cell identifier corresponding to the first type of SSB.

[0165] For example, the first auxiliary information includes 1 bit to indicate whether the cell identifier corresponding to the target second type SSB is the same as the cell identifier corresponding to the first type SSB. For example, if the terminal device determines based on the first auxiliary information that the cell identifier corresponding to the target second type SSB is the same as the cell identifier corresponding to the first type SSB, the terminal device can determine the synchronization signal sequence corresponding to the target second type SSB based on the cell identifier information of the first type SSB, and thus detect the target second type SSB based on the synchronization signal sequence. In this case, the first auxiliary information may not include the cell identifier information corresponding to the target second type SSB, such as the first cell identifier information, thereby saving overhead. For example, if the terminal device determines based on the first auxiliary information that the cell identifier corresponding to the target second type SSB is different from the cell identifier corresponding to the first type SSB, and the first auxiliary information does not include the cell identifier information corresponding to the target second type SSB, the terminal device can detect the target second type SSB at the frequency point of the target second type SSB using blind detection.

[0166] (13) Indication information on whether the downlink timing information corresponding to the second type of SSB is the same as that corresponding to the first type of SSB.

[0167] For example, the first auxiliary information includes 1 bit to indicate whether the downlink timing information corresponding to the target second type SSB is the same as the downlink timing information corresponding to the first type SSB. For example, the first auxiliary information indicates whether the target second type SSB and the first type SSB are frame-aligned, half-frame-aligned, slot-aligned, or symbol-aligned. For example, if the terminal device determines based on the first auxiliary information that the downlink timing information corresponding to the target second type SSB is the same as the downlink timing information corresponding to the first type SSB, the terminal device can detect or receive the target second type SSB according to the downlink timing information corresponding to the first type SSB, thereby reducing the complexity of the terminal device receiving the target second type SSB.

[0168] (14) Indication information on whether the target type II SSB and the target type I SSB have a QCL relationship.

[0169] For example, the first auxiliary information includes 1 bit to indicate whether the target second type SSB has a QCL relationship with the first type SSB. For instance, the first auxiliary information indicates that the target second type SSB has a QCL relationship with the first type SSB, thereby enabling the terminal device to determine the time-domain and / or frequency-domain location of the target second type SSB based on the first type SSB.

[0170] The role of the second type of target SSB will be explained below.

[0171] In some embodiments, the target second type of SSB is used to determine a first system message, the first system message including the system message corresponding to the target second type of SSB.

[0172] In some embodiments, the first system message is used to determine at least one of the following (1) to (5).

[0173] (1) Cell identifier corresponding to SSB of target type II.

[0174] For example, the first system message includes first cell identification information, which indicates the cell identifier corresponding to the first cell. The first cell is the cell corresponding to the target second type of SSB.

[0175] (2) Paging configuration information corresponding to the SSB of the second type of target.

[0176] The paging configuration information corresponding to the second type of SSB is used to determine the paging configuration of the first cell, such as at least one of the following: paging channel, paging timing, paging DRX (Discontinuous Reception) period, paging priority, etc. The first cell is the cell corresponding to the second type of SSB.

[0177] (3) Carrier bandwidth configuration information corresponding to the second type of SSB of the target.

[0178] The carrier bandwidth configuration information corresponding to the second type of SSB is used to determine the carrier bandwidth corresponding to the first cell. The carrier bandwidth corresponding to the first cell refers to the difference between the highest and lowest frequencies of the carrier used for data transmission within the first cell. The first cell is the cell corresponding to the second type of SSB.

[0179] (4) Random access resource configuration information corresponding to the second type of SSB of the target.

[0180] The random access resource configuration information corresponding to the SSB of the second target type is used to determine the random access resources corresponding to the first cell. For example, the random access resources include RO resources, and the first system message includes: indication information of the uplink bandwidth corresponding to the first cell and RO resource configuration information in the uplink bandwidth corresponding to the first cell. As another example, the random access resources include MsgA resources, and the first system message includes: indication information of the uplink bandwidth corresponding to the first cell and MsgA resource configuration information in the uplink bandwidth corresponding to the first cell. Here, the first cell is the cell corresponding to the SSB of the second target type.

[0181] (5) The second access prohibition information corresponding to the SSB of the second type of target, the second access prohibition information is used to indicate whether the terminal device is prohibited from accessing the cell corresponding to the SSB of the second type of target.

[0182] For example, the first system message includes second Bar information, which indicates whether to prohibit the terminal device from accessing the first cell. The first cell is the cell corresponding to the target second type of SSB.

[0183] In some embodiments, the target second type of SSB is used to determine a first system message, including one of the following (1) to (4).

[0184] (1) The first system message is carried in the SSB of the second type of target.

[0185] For example, the first system message is carried in the PBCH (Physical Broadcast Channel) of the target second type SSB.

[0186] For example, the target second type SSB carries M system messages, including a first system message, where M is a positive integer.

[0187] For example, the PBCH of the target type 2 SSB carries M system messages.

[0188] In some embodiments, the target second type of SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to receive a first system message, including any one of the following (2) to (4). The second downlink frequency domain unit set is a set of downlink frequency domain units used for sending and receiving the first system message.

[0189] (2) The second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDSCH carrying the first system message.

[0190] For example, the second time-frequency resource is used to transmit a third PDSCH, which carries a first system message.

[0191] For example, the second time-frequency resource is used to transmit the third PDSCH, which carries M system messages, including the first system message, where M is a positive integer.

[0192] For example, the target second type of SSB is used to determine the second time-frequency resource, the second time-frequency resource is used to transmit the third PDSCH, the third PDSCH carries M system messages, the M system messages include the first system message, and M is a positive integer.

[0193] (3) The second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDCCH carrying the first system message.

[0194] For example, the second time-frequency resource is used to transmit a third PDCCH, which carries a first system message.

[0195] For example, the second time-frequency resource is used to transmit the third PDCCH, which carries M system messages, including the first system message, where M is a positive integer.

[0196] For example, the target second type of SSB is used to determine the second time-frequency resource, the second time-frequency resource is used to transmit the third PDCCH, the third PDCCH carries M system messages, the M system messages include the first system message, and M is a positive integer.

[0197] (4) The second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set. The second time-frequency resource is used to transmit the PDCCH carrying the first system message of the PDSCH.

[0198] For example, the second time-frequency resource is used to transmit the fourth PDCCH, the fourth PDCCH is used to schedule the fourth PDSCH, and the fourth PDSCH carries the first system message.

[0199] For example, the second time-frequency resource is used to transmit the fourth PDCCH, the fourth PDCCH is used to schedule the fourth PDSCH, the fourth PDSCH carries M system messages, the M system messages include the first system message, and M is a positive integer.

[0200] For example, the target second type of SSB is used to determine the second time-frequency resource, the second time-frequency resource is used to transmit the fourth PDCCH, the fourth PDCCH is used to schedule the fourth PDSCH, the fourth PDSCH carries M system messages, the M system messages include the first system message, and M is a positive integer.

[0201] In some embodiments, the target second type SSB is used to determine the second time-frequency resource in the second downlink frequency domain cell set, including both explicit and implicit determination methods. Optionally, the target second type SSB is used to determine the second time-frequency resource in the second downlink frequency domain cell set, including at least one of the following (1) to (3).

[0202] (1) The second type of target SSB carries indication information for determining the second time-frequency resource.

[0203] For example, the bandwidth occupied by the target second type SSB (i.e., the second downlink frequency domain unit set) is preset, and the bandwidth occupied by the target second type SSB is the same as the downlink bandwidth corresponding to the target second type SSB (e.g., the starting position and bandwidth size are the same). The second time-frequency resource is the time-frequency resource in the downlink bandwidth corresponding to the target second type SSB. This indication information is used to determine the time domain position and / or frequency domain position of the second time-frequency resource in the downlink bandwidth.

[0204] (2) The second type of target SSB carries indication information for determining the second downlink frequency domain cell set.

[0205] For example, the SSB of the second type of target carries indication information for determining the second downlink frequency domain unit set and indication information for determining the second time-frequency resource. Based on the SSB of the second type of target target, the second downlink frequency domain unit set and the second time-frequency resource in the second downlink frequency domain unit set can be determined.

[0206] For example, the target second type SSB is used to determine the downlink bandwidth corresponding to the target second type SSB and the second time-frequency resource in that downlink bandwidth. That is, in this example, the target second type SSB also includes indication information for determining the downlink bandwidth corresponding to the target second type SSB.

[0207] (3) There is a mapping relationship between the time-frequency resource where the target second type SSB is located and the second time-frequency resource, or the second time-frequency resource is determined based on the time-frequency resource where the target second type SSB is located according to the preset rules.

[0208] For example, the bandwidth occupied by the target second type SSB is preset, the bandwidth occupied by the target second type SSB is the same as the downlink bandwidth corresponding to the target second type SSB, the second time-frequency resource is the time-frequency resource in the downlink bandwidth corresponding to the target second type SSB, and the positional relationship between the second time-frequency resource and the time-frequency resource where the target second type SSB is located is preset or determined by preset rules.

[0209] In some embodiments, the target second type of SSB is used to determine at least one of the following: the time domain position of the second time-frequency resource in the second downlink frequency domain unit set, the frequency domain position of the second time-frequency resource in the second downlink frequency domain unit set, and the QCL relationship corresponding to the second time-frequency resource; and / or, based on the target second type of SSB, to receive a first system message in the second downlink frequency domain unit set.

[0210] In some embodiments, the SSB time-frequency structure corresponding to the first type of SSB is the same as the SSB time-frequency structure corresponding to the target second type of SSB.

[0211] In some embodiments, the SSB time-frequency structure corresponding to the first type of SSB is different from the SSB time-frequency structure corresponding to the target second type of SSB.

[0212] Optionally, the SSB time-frequency structure corresponding to the first type of SSB refers to the RE positional relationship mapped on the time-frequency resources of the PSS, SSS, and PBCH included in the first type of SSB. The SSB time-frequency structure corresponding to the target second type of SSB refers to the RE positional relationship mapped on the time-frequency resources of the PSS, SSS, and PBCH included in the target second type of SSB.

[0213] For example, the time-frequency structure of the SSB corresponding to the first type of SSB is the same as that of the SSB corresponding to the target second type of SSB. This means that the RE position relationship of the PSS, SSS and PBCH included in the first type of SSB on the time-frequency resources is the same as that of the RE position relationship of the PSS, SSS and PBCH included in the target second type of SSB on the time-frequency resources.

[0214] For example, the time-frequency structure of the SSB corresponding to the first type of SSB is different from that of the SSB corresponding to the target second type of SSB. This means that the RE position relationship of the PSS, SSS and PBCH included in the first type of SSB on the time-frequency resources is different from that of the RE position relationship of the PSS, SSS and PBCH included in the target second type of SSB on the time-frequency resources.

[0215] In some embodiments, the first type of SSB is a periodically transmitted channel or signal; and / or, the first auxiliary information is periodically transmitted information. Exemplarily, the terminal device detects the first type of SSB and / or the first auxiliary information according to an assumed period. The assumed period can be a predefined period, such as 20ms.

[0216] The first and second frequency domain unit sets will be introduced and explained below.

[0217] In some embodiments, the first downlink frequency domain cell set and the second downlink frequency domain cell set are different, or the CC corresponding to the first downlink frequency domain cell set and the CC corresponding to the second downlink frequency domain cell set are different.

[0218] In some embodiments, the first downlink frequency domain unit set and the second downlink frequency domain unit set are aligned in the time domain based on time domain units, wherein the time domain unit is one of the following: frame, half-frame, time slot, symbol.

[0219] The following example illustrates the process of a terminal device accessing the network, using a network device providing services to two types of terminal devices with different capabilities. For ease of description, in the following example, the first type of SSB is used to determine the first auxiliary information, including: the first type of SSB is used to determine the first time-frequency resource, the first time-frequency resource is used to transmit the second PDCCH, the second PDCCH is used to schedule the second PDSCH, and the second PDSCH carries the first auxiliary information. The target second type of SSB (denoted as second type SSB#1) is used to determine the first system message, including: the target second type of SSB is used to determine the second time-frequency resource, the second time-frequency resource is used to transmit the fourth PDCCH, the fourth PDCCH is used to schedule the fourth PDSCH, and the fourth PDSCH carries the first system message. The two types of terminal devices with different capabilities are a high-capability terminal device (e.g., a large-core terminal device) and a low-capability terminal device (e.g., a small-core terminal device).

[0220] As shown in Figure 7, the second PDSCH carries first auxiliary information and second auxiliary information. The first auxiliary information is used to determine the second type of SSB#1, and the second auxiliary information is used to determine the second type of SSB#2. The second type of SSB#1 and the second type of SSB#2 correspond to different terminal device capabilities. For example, the second type of SSB#1 corresponds to a terminal device with high capabilities, and the second type of SSB#2 corresponds to a terminal device with low capabilities. The first type of SSB, the second type of SSB#1, and the second type of SSB#2 are located on different downlink bandwidths. In this example, the first type of SSB is on CC#1, the second type of SSB#1 is on CC#2, and the second type of SSB#2 is on CC#3. The first type of SSB does not perform the functions of the second type of SSB. The first system message includes system messages for communication via resources in CC#2, and the second system message includes system messages for communication via resources in CC#3.

[0221] When the terminal device is a high-capability terminal device, after receiving a first type of SSB on CC#1 through blind SSB detection, the terminal device obtains first and second auxiliary information based on the first type of SSB. Since the first auxiliary information corresponds to a high-capability terminal device, the terminal device receives a second type of SSB#1 on CC#2 based on the first auxiliary information, and obtains a first system message based on the second type of SSB#1, thereby enabling communication through the resources in CC#2.

[0222] When the terminal device is a low-capability terminal device, after receiving a first type of SSB on CC#1 through blind detection of SSB, the terminal device obtains first and second auxiliary information based on the first type of SSB. Since the second auxiliary information corresponds to the low-capability terminal device, the terminal device receives a second type of SSB#2 on CC#3 based on the second auxiliary information, and determines a third time-frequency resource based on the second type of SSB#2. The third time-frequency resource is used to transmit the fifth PDCCH, and the fifth PDCCH is used to schedule the fifth PDSCH. The fifth PDSCH carries the second system message, so the terminal device can obtain the second system message and thus communicate through the resources in CC#3.

[0223] As shown in Figure 8, the second PDSCH carries first auxiliary information and second auxiliary information. The first auxiliary information is used to determine the second type of SSB#1, and the second auxiliary information is used to determine the second type of SSB#2. The second type of SSB#1 and the second type of SSB#2 correspond to different terminal device capabilities. For example, the second type of SSB#1 corresponds to a terminal device with high capabilities, and the second type of SSB#2 corresponds to a terminal device with low capabilities. The first type of SSB and the second type of SSB#1 operate on different downlink bandwidths, while the first type of SSB and the second type of SSB#2 operate on the same downlink bandwidth. In this example, the first type of SSB and the second type of SSB#2 are on CC#1, and the second type of SSB#1 is on CC#2. The first type of SSB does not perform the functions of the second type of SSB. The first system message includes system messages for communication via resources in CC#2, and the second system message includes system messages for communication via resources in CC#1.

[0224] When the terminal device is a high-capability terminal device, after receiving a first type of SSB on CC#1 through blind SSB detection, the terminal device obtains first and second auxiliary information based on the first type of SSB. Since the first auxiliary information corresponds to a high-capability terminal device, the terminal device receives a second type of SSB#1 on CC#2 based on the first auxiliary information, and obtains a first system message based on the second type of SSB#1, thereby enabling communication through the resources in CC#2.

[0225] When the terminal device is a low-capability terminal device, after receiving a first type of SSB on CC#1 through blind detection of SSB, the terminal device obtains first and second auxiliary information based on the first type of SSB. Since the second auxiliary information corresponds to the low-capability terminal device, the terminal device receives a second type of SSB#2 on CC#1 based on the second auxiliary information, and determines a third time-frequency resource based on the second type of SSB#2. The third time-frequency resource is used to transmit the fifth PDCCH, and the fifth PDCCH is used to schedule the fifth PDSCH. The fifth PDSCH carries a second system message, so the terminal device can obtain the second system message and thus communicate through the resources in CC#1.

[0226] As shown in Figure 9, the second PDSCH carries first auxiliary information, which is used to determine the second type of SSB#1. The first type of SSB performs the function of the second type of SSB. The second type of SSB#1 and the first type of SSB correspond to different terminal device capabilities. For example, the second type of SSB#1 corresponds to a terminal device with high capabilities, and the first type of SSB corresponds to a terminal device with low capabilities. The first type of SSB and the second type of SSB#1 are on different downlink bandwidths. In this example, the first type of SSB is on CC#1, and the second type of SSB#1 is on CC#2. The first system message includes system messages for communication via resources in CC#2, and the second system message includes system messages for communication via resources in CC#1.

[0227] When the terminal device is a high-capability terminal device, after receiving a first type of SSB on CC#1 through blind SSB detection, the terminal device obtains first auxiliary information based on the first type of SSB. Since the first auxiliary information corresponds to a high-capability terminal device, the terminal device receives a second type of SSB#1 on CC#2 based on the first auxiliary information, and obtains a first system message based on the second type of SSB#1, thereby enabling communication through the resources in CC#2.

[0228] When the terminal device is a low-capability terminal device, after receiving the first type of SSB on CC#1 through blind detection of SSB, the terminal device can determine the third time-frequency resource based on the first type of SSB since the first type of SSB corresponds to the low-capability terminal device. The third time-frequency resource is used to transmit the fifth PDCCH, the fifth PDCCH is used to schedule the fifth PDSCH, and the fifth PDSCH carries the second system message. Therefore, the terminal device can obtain the second system message and thus communicate through the resources in CC#1.

[0229] It should be understood that the technical solutions provided in the embodiments of this application can be applied to a scenario where a cell includes multiple CCs, or to a scenario where a cell includes one CC.

[0230] Please refer to Figure 10, which shows a flowchart of a wireless communication method provided in another embodiment of this application. This method can be applied to the network architecture shown in Figure 1. The method may include at least one of the following steps 1010 to 1020.

[0231] Step 1010: The network device sends a first type of SSB. The first type of SSB is used by the terminal device to determine the first auxiliary information. The first auxiliary information is used to determine the target second type of SSB.

[0232] Step 1020: The network device sends the target second type of SSB based on the first auxiliary information.

[0233] In some embodiments, the network device sends a first type of SSB and N second type SSBs, where N is a positive integer.

[0234] In some embodiments, the target second type SSB is one of the N second type SSBs mentioned above.

[0235] For details not described in the method steps on the network device side, please refer to the description in the above embodiments, which will not be repeated here.

[0236] In summary, the technical solution provided in this application, in order to reduce the initial access latency of the terminal device, divides the process of the terminal device searching for a suitable cell into two steps. First, it searches for a first type of SSB in a small set of candidate frequency points. After finding the first type of SSB, it obtains auxiliary information for detecting a second type of SSB based on the first type of SSB, and then detects or receives the second type of SSB based on the auxiliary information. This method reduces the number of candidate frequency points that the terminal device needs to blindly detect, thereby reducing the initial access latency of the terminal device. Furthermore, different second types of SSBs can exist in the system or cell. Different second types of SSBs can be used for terminal devices with different functional or capability sets, different vertical services, different spectrum resources, or different RATs, thereby helping to reduce the design complexity of the system.

[0237] In the above method embodiments, the steps executed by the terminal device can be implemented independently as a wireless communication method on the terminal device side, and the steps executed by the network device can be implemented independently as a wireless communication method on the network device side. Furthermore, the various embodiments of this application can be arbitrarily combined to form new embodiments, all of which are within the protection scope of this application.

[0238] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0239] Please refer to Figure 11, which shows a block diagram of a wireless communication device according to an embodiment of this application. This device has the function of implementing the wireless communication method on the terminal device side described above. This function can be implemented in hardware or by hardware executing corresponding software. The device can be the terminal device described above, or it can be disposed within a terminal device. As shown in Figure 11, the device 1100 may include a processing module 1110 and a receiving module 1120.

[0240] The processing module 1110 is used to determine first auxiliary information based on the received first type of SSB, wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine the target second type of SSB.

[0241] The receiving module 1120 is used to receive the target second type SSB based on the first auxiliary information.

[0242] In some embodiments, the first type of SSB is used to determine the first auxiliary information, including one of the following: the first type of SSB carries the first auxiliary information; the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, the first time-frequency resource being used to transmit a PDSCH carrying the first auxiliary information; the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, the first time-frequency resource being used to transmit a PDCCH carrying the first auxiliary information; the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, the first time-frequency resource being used to transmit a PDCCH that schedules the PDSCH carrying the first auxiliary information.

[0243] In some embodiments, the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, including at least one of the following: the first type of SSB carries indication information for determining the first time-frequency resource; the first type of SSB carries indication information for determining the first downlink frequency domain unit set; there is a mapping relationship between the time-frequency resource where the first type of SSB is located and the first time-frequency resource; or, the first time-frequency resource is determined based on the time-frequency resource where the first type of SSB is located according to a preset rule.

[0244] In some embodiments, the first type of SSB is used to determine at least one of the following: the time-domain position of the first time-frequency resource in the first downlink frequency domain unit set, the frequency-domain position of the first time-frequency resource in the first downlink frequency domain unit set, the QCL relationship corresponding to the first time-frequency resource; and / or, based on the first type of SSB, to receive the first auxiliary information in the first downlink frequency domain unit set.

[0245] In some embodiments, the first auxiliary information is used to determine a target second type of SSB, including: the first auxiliary information is used to determine at least one of the following: the frequency point of the target second type of SSB; the time domain location of the target second type of SSB; the period of the target second type of SSB; the index information of the target second type of SSB; the SCS information of the target second type of SSB; the information of the second downlink frequency domain unit set corresponding to the target second type of SSB; the SCS information of the second downlink frequency domain unit set corresponding to the target second type of SSB; the type of the target second type of SSB; the random access resource configuration information corresponding to the target second type of SSB; the first access prohibition information corresponding to the target second type of SSB, the first access prohibition information being used to indicate whether the terminal device is prohibited from detecting the target second type of SSB; the cell identifier corresponding to the target second type of SSB; the indication information as to whether the cell identifier corresponding to the target second type of SSB is the same as the cell identifier corresponding to the first type of SSB; the indication information as to whether the downlink timing information corresponding to the target second type of SSB is the same as the downlink timing information corresponding to the first type of SSB; and the indication information as to whether the target second type of SSB and the first type of SSB have a QCL relationship.

[0246] In some embodiments, the target second type of SSB is used to determine a first system message, the first system message including a system message corresponding to the target second type of SSB.

[0247] In some embodiments, the first system message is used to determine at least one of the following: the cell identifier corresponding to the SSB of the target second type; the paging configuration information corresponding to the SSB of the target second type; the carrier bandwidth configuration information corresponding to the SSB of the target second type; the random access resource configuration information corresponding to the SSB of the target second type; and the second access prohibition information corresponding to the SSB of the target second type, wherein the second access prohibition information is used to indicate whether the terminal device is prohibited from accessing the cell corresponding to the SSB of the target second type.

[0248] In some embodiments, the target second type SSB is used to determine a first system message, including one of the following: the target second type SSB carries the first system message; the target second type SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to transmit a PDSCH carrying the first system message; the target second type SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to transmit a PDCCH carrying the first system message; the target second type SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to transmit a PDCCH scheduling the PDSCH carrying the first system message.

[0249] In some embodiments, the SSB of the second target type is used to determine the second time-frequency resource in the second downlink frequency domain unit set, including at least one of the following: the SSB of the second target type carries indication information for determining the second time-frequency resource; the SSB of the second target type carries indication information for determining the second downlink frequency domain unit set; there is a mapping relationship between the time-frequency resource where the SSB of the second target type is located and the second time-frequency resource, or the second time-frequency resource is determined based on the time-frequency resource where the SSB of the second target type is located according to a preset rule.

[0250] In some embodiments, the target second type SSB is used to determine at least one of the following: the time-domain position of the second time-frequency resource in the second downlink frequency domain unit set, the frequency-domain position of the second time-frequency resource in the second downlink frequency domain unit set, the QCL relationship corresponding to the second time-frequency resource; and / or, based on the target second type SSB, to receive the first system message in the second downlink frequency domain unit set.

[0251] In some embodiments, the first type of SSB is used to determine N auxiliary information, or the SSB transmission opportunity corresponding to the first type of SSB is used to determine N auxiliary information, wherein the SSB transmission opportunity includes N SSBs, and each of the N SSBs is used to determine one auxiliary information; the N auxiliary information is used to determine N second type of SSBs; wherein each of the N auxiliary information is used to determine a second type of SSB, and the N auxiliary information includes the first auxiliary information, where N is a positive integer.

[0252] In some embodiments, the first auxiliary information is used to determine N second-type SSBs, the N second-type SSBs including the target second-type SSB, where N is a positive integer.

[0253] In some embodiments, the first type of SSB and the N second type of SSB are SSBs in the same cell; or, the first type of SSB and the N second type of SSB are SSBs in different cells; or, a portion of the first type of SSB and the N second type of SSB are SSBs in the same cell, and another portion of the first type of SSB and the N second type of SSB are SSBs in different cells.

[0254] In some embodiments, the first type of SSB and the N second type of SSB are SSBs in different downlink frequency domain unit sets or different carriers; or, one of the second type of SSBs in the first type and the N second type of SSBs are SSBs in the same downlink frequency domain unit set or the same carrier, and the other second type of SSBs in the first type and the N second type of SSBs are SSBs in different downlink frequency domain unit sets or different carriers.

[0255] In some embodiments, when N is greater than 1, the N second-type SSBs are SSBs in the same cell; or, the N second-type SSBs are SSBs in different cells; or, a portion of the N second-type SSBs are SSBs in the same cell, and another portion are SSBs in different cells.

[0256] In some embodiments, when N is greater than 1, the N second-type SSBs are SSBs from different frequency domain unit sets or different carriers.

[0257] In some embodiments, when N is greater than 1, the SSB transmission opportunities corresponding to any two of the N second-type SSBs are different; and / or, the SSB transmission opportunity corresponding to the first-type SSB is different from the SSB transmission opportunity corresponding to any one of the N second-type SSBs.

[0258] In some embodiments, when N is greater than 1, the time-frequency structures of the SSBs corresponding to the N second-type SSBs are the same; or, the time-frequency structures of the SSBs corresponding to at least two of the N second-type SSBs are different.

[0259] In some embodiments, the first type of SSB does not have the functionality of the second type of SSB; or, the first type of SSB has the functionality of another second type of SSB besides the N second type of SSBs; or, the first type of SSB has the functionality of one of the N second type of SSBs.

[0260] In some embodiments, the second type of SSB includes: an SSB determined based on auxiliary information.

[0261] In some embodiments, the second type of SSB includes at least one of the following: an SSB dedicated to a specific set of functions or capabilities, an SSB dedicated to a specific service, an SSB dedicated to a specific spectrum resource, and an SSB dedicated to a specific RAT.

[0262] In some embodiments, the first type of SSB includes at least one of the following: SSBs detected by terminal devices that support the target RAT, SSBs transmitted on frequencies in a preset candidate frequency set, and minimum capability SSBs.

[0263] In some embodiments, the minimum capability SSB includes: an SSB in which the terminal device with the lowest capability in the network system corresponding to the target RAT also has detection capability.

[0264] In some embodiments, the SSB time-frequency structure corresponding to the first type of SSB is the same as the SSB time-frequency structure corresponding to the target second type of SSB; or, the SSB time-frequency structure corresponding to the first type of SSB is different from the SSB time-frequency structure corresponding to the target second type of SSB.

[0265] In some embodiments, the first type of SSB is a periodically transmitted channel or signal; and / or, the first auxiliary information is periodically transmitted information.

[0266] Please refer to Figure 12, which shows a block diagram of a wireless communication device provided in another embodiment of this application. This device has the function of implementing the wireless communication method on the network device side described above. This function can be implemented in hardware or by hardware executing corresponding software. The device can be the network device described above, or it can be disposed within a network device. As shown in Figure 12, the device 1200 may include a transmitting module 1210.

[0267] The sending module 1210 is used to send a first type of SSB, the first type of SSB is used by the terminal device to determine first auxiliary information, and the first information is used to determine the target second type of SSB;

[0268] The sending module 1210 is further configured to send the target second type SSB based on the first auxiliary information.

[0269] In some embodiments, the first type of SSB is used by the terminal device to determine the first auxiliary information, including one of the following: the first type of SSB carries the first auxiliary information; the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, the first time-frequency resource being used to transmit a PDSCH carrying the first auxiliary information; the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, the first time-frequency resource being used to transmit a PDCCH carrying the first auxiliary information; the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, the first time-frequency resource being used to transmit a PDCCH that schedules the PDSCH carrying the first auxiliary information.

[0270] In some embodiments, the first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain unit set, including at least one of the following: the first type of SSB carries indication information for determining the first time-frequency resource; the first type of SSB carries indication information for determining the first downlink frequency domain unit set; there is a mapping relationship between the time-frequency resource where the first type of SSB is located and the first time-frequency resource; or, the first time-frequency resource is determined based on the time-frequency resource where the first type of SSB is located according to a preset rule.

[0271] In some embodiments, the first type of SSB is used to determine at least one of the following: the time-domain position of the first time-frequency resource in the first downlink frequency domain unit set, the frequency-domain position of the first time-frequency resource in the first downlink frequency domain unit set, and the QCL relationship corresponding to the first time-frequency resource; and / or, the terminal device receives the first auxiliary information in the first downlink frequency domain unit set based on the first type of SSB.

[0272] In some embodiments, the first auxiliary information is used to determine a target second type of SSB, including: the first auxiliary information is used to determine at least one of the following: the frequency point of the target second type of SSB; the time domain location of the target second type of SSB; the period of the target second type of SSB; the index information of the target second type of SSB; the SCS information of the target second type of SSB; the information of the second downlink frequency domain unit set corresponding to the target second type of SSB; the SCS information of the second downlink frequency domain unit set corresponding to the target second type of SSB; the type of the target second type of SSB; the random access resource configuration information corresponding to the target second type of SSB; the first access prohibition information corresponding to the target second type of SSB, the first access prohibition information being used to indicate whether the terminal device is prohibited from detecting the target second type of SSB; the cell identifier corresponding to the target second type of SSB; the indication information as to whether the cell identifier corresponding to the target second type of SSB is the same as the cell identifier corresponding to the first type of SSB; the indication information as to whether the downlink timing information corresponding to the target second type of SSB is the same as the downlink timing information corresponding to the first type of SSB; and the indication information as to whether the target second type of SSB and the first type of SSB have a QCL relationship.

[0273] In some embodiments, the target second type of SSB is used to determine a first system message, the first system message including a system message corresponding to the target second type of SSB.

[0274] In some embodiments, the first system message is used to determine at least one of the following: the cell identifier corresponding to the SSB of the target second type; the paging configuration information corresponding to the SSB of the target second type; the carrier bandwidth configuration information corresponding to the SSB of the target second type; the random access resource configuration information corresponding to the SSB of the target second type; and the second access prohibition information corresponding to the SSB of the target second type, wherein the second access prohibition information is used to indicate whether the terminal device is prohibited from accessing the cell corresponding to the SSB of the target second type.

[0275] In some embodiments, the target second type SSB is used to determine a first system message, including one of the following: the target second type SSB carries the first system message; the target second type SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to transmit a PDSCH carrying the first system message; the target second type SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to transmit a PDCCH carrying the first system message; the target second type SSB is used to determine a second time-frequency resource in a second downlink frequency domain unit set, the second time-frequency resource being used to transmit a PDCCH scheduling the PDSCH carrying the first system message.

[0276] In some embodiments, the SSB of the second target type is used to determine the second time-frequency resource in the second downlink frequency domain unit set, including at least one of the following: the SSB of the second target type carries indication information for determining the second time-frequency resource; the SSB of the second target type carries indication information for determining the second downlink frequency domain unit set; there is a mapping relationship between the time-frequency resource where the SSB of the second target type is located and the second time-frequency resource, or the second time-frequency resource is determined based on the time-frequency resource where the SSB of the second target type is located according to a preset rule.

[0277] In some embodiments, the target second type of SSB is used to determine at least one of the following: the time-domain position of the second time-frequency resource in the second downlink frequency domain unit set, the frequency-domain position of the second time-frequency resource in the second downlink frequency domain unit set, and the QCL relationship corresponding to the second time-frequency resource; and / or, the terminal device receives the first system message in the second downlink frequency domain unit set based on the target second type of SSB.

[0278] In some embodiments, the first type of SSB is used to determine N auxiliary information, or the SSB transmission opportunity corresponding to the first type of SSB is used to determine N auxiliary information, wherein the SSB transmission opportunity includes N SSBs, and each of the N SSBs is used to determine one auxiliary information; the N auxiliary information is used to determine N second type of SSBs; wherein each of the N auxiliary information is used to determine a second type of SSB, and the N auxiliary information includes the first auxiliary information, where N is a positive integer.

[0279] In some embodiments, the first auxiliary information is used to determine N second-type SSBs, the N second-type SSBs including the target second-type SSB, where N is a positive integer.

[0280] In some embodiments, the first type of SSB and the N second type of SSB are SSBs in the same cell; or, the first type of SSB and the N second type of SSB are SSBs in different cells; or, a portion of the first type of SSB and the N second type of SSB are SSBs in the same cell, and another portion of the first type of SSB and the N second type of SSB are SSBs in different cells.

[0281] In some embodiments, the first type of SSB and the N second type of SSB are SSBs in different downlink frequency domain unit sets or different carriers; or, one of the second type of SSBs in the first type and the N second type of SSBs are SSBs in the same downlink frequency domain unit set or the same carrier, and the other second type of SSBs in the first type and the N second type of SSBs are SSBs in different downlink frequency domain unit sets or different carriers.

[0282] In some embodiments, when N is greater than 1, the N second-type SSBs are SSBs in the same cell; or, the N second-type SSBs are SSBs in different cells; or, a portion of the N second-type SSBs are SSBs in the same cell, and another portion are SSBs in different cells.

[0283] In some embodiments, when N is greater than 1, the N second-type SSBs are SSBs from different frequency domain unit sets or different carriers.

[0284] In some embodiments, when N is greater than 1, the SSB transmission opportunities corresponding to any two of the N second-type SSBs are different; and / or, the SSB transmission opportunity corresponding to the first-type SSB is different from the SSB transmission opportunity corresponding to any one of the N second-type SSBs.

[0285] In some embodiments, when N is greater than 1, the time-frequency structures of the SSBs corresponding to the N second-type SSBs are the same; or, the time-frequency structures of the SSBs corresponding to at least two of the N second-type SSBs are different.

[0286] In some embodiments, the first type of SSB does not have the functionality of the second type of SSB; or, the first type of SSB has the functionality of another second type of SSB besides the N second type of SSBs; or, the first type of SSB has the functionality of one of the N second type of SSBs.

[0287] In some embodiments, the second type of SSB includes: an SSB determined based on auxiliary information.

[0288] In some embodiments, the second type of SSB includes at least one of the following: an SSB dedicated to a specific set of functions or capabilities, an SSB dedicated to a specific service, an SSB dedicated to a specific spectrum resource, and an SSB dedicated to a specific RAT.

[0289] In some embodiments, the first type of SSB includes at least one of the following: SSBs detected by terminal devices that support the target RAT, SSBs transmitted on frequencies in a preset candidate frequency set, and minimum capability SSBs.

[0290] In some embodiments, the minimum capability SSB includes: an SSB in which the terminal device with the lowest capability in the network system corresponding to the target RAT also has detection capability.

[0291] In some embodiments, the SSB time-frequency structure corresponding to the first type of SSB is the same as the SSB time-frequency structure corresponding to the target second type of SSB; or, the SSB time-frequency structure corresponding to the first type of SSB is different from the SSB time-frequency structure corresponding to the target second type of SSB.

[0292] In some embodiments, the first type of SSB is a periodically transmitted channel or signal; and / or, the first auxiliary information is periodically transmitted information.

[0293] It should be noted that the above embodiments only illustrate the division of the above functional modules when implementing the device. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0294] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here. For details not described in detail in the apparatus embodiments, please refer to the above method embodiments.

[0295] Please refer to Figure 13, which shows a schematic diagram of the structure of a terminal device provided in one embodiment of this application. The terminal device 1300 may include a processor 1301, a transceiver 1302, and a memory 1303. The processor 1301 is used to implement various processing functions of the terminal device 1300, such as generating information to be sent, processing received information, controlling transmission and / or reception, etc., as in implementing the aforementioned processing module 1110. The transceiver 1302 is used to implement transmission and / or reception functions, as in implementing the functions of the aforementioned receiving module 1120.

[0296] The processor 1301 includes one or more processing cores. The processor 1301 executes various functional applications and information processing by running software programs and modules.

[0297] The transceiver 1302 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0298] The memory 1303 can be connected to the processor 1301 and the transceiver 1302.

[0299] The memory 1303 can be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement the various steps in the above method embodiments.

[0300] In some embodiments, processor 1301 is configured to determine first auxiliary information based on a received first type of SSB, wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine a target second type of SSB. Transceiver 1302 is configured to receive the target second type of SSB based on the first auxiliary information.

[0301] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0302] Furthermore, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, statically accessible memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0303] Please refer to Figure 14, which shows a schematic diagram of a network device provided in one embodiment of this application. The network device 1400 may include a processor 1401, a transceiver 1402, and a memory 1403. The processor 1401 can be used to implement various processing functions of the network device 1400, such as generating information to be sent, processing received information, and controlling transmission and / or reception. The transceiver 1402 is used to implement transmission and / or reception functions, such as implementing the functions of the aforementioned transmission module 1210.

[0304] The processor 1401 includes one or more processing cores, and the processor 1401 executes various functional applications and information processing by running software programs and modules.

[0305] Transceiver 1402 may include a receiver and a transmitter. For example, transceiver 1402 may include a wired communication component, which may include a wired communication chip and a wired interface (such as a fiber optic interface). Optionally, transceiver 1402 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0306] The memory 1403 can be connected to the processor 1401 and the transceiver 1402.

[0307] The memory 1403 can be used to store a computer program executed by the processor, and the processor 1401 is used to execute the computer program to implement the various steps performed by the network device in the above method embodiment.

[0308] In some embodiments, transceiver 1402 is configured to transmit a first type of SSB, the first type of SSB being used by the terminal device to determine first auxiliary information, the first auxiliary information being used to determine a target second type of SSB; and based on the first auxiliary information, transmit the target second type of SSB.

[0309] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0310] Furthermore, the memory 1403 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0311] This application also provides a computer-readable storage medium storing a computer program for execution by a processor to implement the aforementioned wireless communication method on the terminal device side or the aforementioned wireless communication method on the network device side. In some embodiments, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0312] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running, it is used to implement the wireless communication method on the terminal device side described above.

[0313] This application also provides a chip, which includes programmable logic circuitry and / or program instructions. When the chip is running in a terminal device, it is used to: determine first auxiliary information based on a received first type of SSB, wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine a target second type of SSB; and receive the target second type of SSB based on the first auxiliary information. When the chip is running in the terminal device, it is also used to implement other steps performed by the terminal device as described in the above embodiments, which will not be repeated here.

[0314] This application also provides a chip, which includes programmable logic circuits and / or program instructions, and when the chip is running, it is used to implement the wireless communication method on the network device side described above.

[0315] This application also provides a chip, which includes programmable logic circuitry and / or program instructions. When the chip operates in a network device, it is used to: send a first type of SSB, wherein the first type of SSB is used by the terminal device to determine first auxiliary information, and the first auxiliary information is used to determine a target second type of SSB; and send the target second type of SSB based on the first auxiliary information. When the chip operates in the network device, it is also used to implement other steps performed by the network device as described in the above embodiments, which will not be repeated here.

[0316] This application also provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the wireless communication method on the terminal device side or the wireless communication method on the network device side.

[0317] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0318] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0319] In some embodiments of this application, "predefined" can be achieved 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.

[0320] In some embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as BLE protocol, Wi-Fi protocol, and related protocols applied in future communication systems. This application does not limit the scope of these protocols.

[0321] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0322] In this article, "greater than or equal to" can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0323] Furthermore, the step numbers described herein are merely illustrative of one possible execution order between steps. In some other embodiments, the steps may not be executed in the order of their numbers, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this.

[0324] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0325] The above description is merely an exemplary embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method of wireless communication, the method comprising: The method is executed by a terminal device, and the method includes: Based on the received first type of synchronization signal block (SSB), first auxiliary information is determined, wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine the target second type of SSB; Based on the first auxiliary information, the target second type of SSB is received.

2. The method according to claim 1, characterized in that, The first type of SSB is used to determine the first auxiliary information, including one of the following: The first type of SSB carries the first auxiliary information; The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set, and the first time-frequency resource is used to transmit the physical downlink shared channel (PDSCH) carrying the first auxiliary information; The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set, and the first time-frequency resource is used to transmit the physical downlink control channel (PDCCH) carrying the first auxiliary information; The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set, and the first time-frequency resource is used to transmit the PDCCH that carries the first auxiliary information of the PDSCH.

3. The method according to claim 2, characterized in that, The first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain cell set, including at least one of the following: The first type of SSB carries indication information for determining the first time-frequency resource; The first type of SSB carries indication information for determining the first downlink frequency domain cell set; There is a mapping relationship between the time-frequency resource where the first type of SSB is located and the first time-frequency resource, or the first time-frequency resource is determined based on the time-frequency resource where the first type of SSB is located according to a preset rule.

4. The method according to claim 2 or 3, characterized in that, The first type of SSB is used to determine at least one of the following: the time-domain position of the first time-frequency resource in the first downlink frequency domain cell set, the frequency-domain position of the first time-frequency resource in the first downlink frequency domain cell set, and the quasi-co-address QCL relationship corresponding to the first time-frequency resource; And / or, Based on the first type of SSB, the first auxiliary information is received in the first downlink frequency domain unit set.

5. The method according to any one of claims 1 to 4, characterized in that, The first auxiliary information is used to determine the second type of SSB of the target, including: the first auxiliary information is used to determine at least one of the following: The frequency point of the target's second type of SSB; The temporal location of the second type of SSB of the target; The period of the target second type of SSB; Index information of the target's second type of SSB; The subcarrier spacing SCS information of the second type of SSB of the target; Information on the second downlink frequency domain cell set corresponding to the second type of SSB of the target; SCS information of the second downlink frequency domain unit set corresponding to the second type of SSB of the target; The type of the second type of SSB of the target; The random access resource configuration information corresponding to the second type of SSB of the target; The first access prohibition information corresponding to the target second type of SSB is used to indicate whether to prohibit the terminal device from detecting the target second type of SSB; The cell identifier corresponding to the second type of SSB of the target; The indication information is as to whether the cell identifier corresponding to the second type of SSB is the same as the cell identifier corresponding to the first type of SSB; The indication information is whether the downlink timing information corresponding to the second type of SSB of the target is the same as the downlink timing information corresponding to the first type of SSB; The information indicates whether the target second type of SSB has a QCL relationship with the first type of SSB.

6. The method according to any one of claims 1 to 5, characterized in that, The target second type of SSB is used to determine a first system message, the first system message including the system message corresponding to the target second type of SSB.

7. The method according to claim 6, characterized in that, The first system message is used to determine at least one of the following: The cell identifier corresponding to the second type of SSB of the target; The paging configuration information corresponding to the second type of SSB of the target; The carrier bandwidth configuration information corresponding to the second type of SSB of the target; The random access resource configuration information corresponding to the second type of SSB of the target; The second access prohibition information corresponding to the second type of SSB of the target is used to indicate whether the terminal device is prohibited from accessing the cell corresponding to the second type of SSB of the target.

8. The method according to claim 6 or 7, characterized in that, The target second type of SSB is used to determine the first system message, including one of the following: The target second type of SSB carries the first system message; The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDSCH carrying the first system message; The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDCCH carrying the first system message; The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDCCH carrying the PDSCH of the first system message.

9. The method according to claim 8, characterized in that, The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain cell set, including at least one of the following: The target second type of SSB carries indication information for determining the second time-frequency resource; The second type of target SSB carries indication information for determining the second downlink frequency domain cell set; There is a mapping relationship between the time-frequency resource where the target second type of SSB is located and the second time-frequency resource, or the second time-frequency resource is determined based on the time-frequency resource where the target second type of SSB is located according to a preset rule.

10. The method according to any one of claims 6 to 9, characterized in that, The target second type of SSB is used to determine at least one of the following: the time-domain position of the second time-frequency resource in the second downlink frequency domain unit set, the frequency-domain position of the second time-frequency resource in the second downlink frequency domain unit set, and the QCL relationship corresponding to the second time-frequency resource; And / or, Based on the target second type of SSB, the first system message is received in the second downlink frequency domain unit set.

11. The method according to any one of claims 1 to 10, characterized in that, The first type of SSB is used to determine N auxiliary information, or the SSB transmission opportunity corresponding to the first type of SSB is used to determine N auxiliary information, wherein the SSB transmission opportunity includes N SSBs, and each of the N SSBs is used to determine one auxiliary information; The N auxiliary information pieces are used to determine N second-type SSBs; wherein each of the N auxiliary information pieces is used to determine a second-type SSB, and the N auxiliary information pieces include the first auxiliary information, and N is a positive integer.

12. The method according to any one of claims 1 to 10, characterized in that, The first auxiliary information is used to determine N second-type SSBs, the N second-type SSBs including the target second-type SSB, where N is a positive integer.

13. The method according to claim 11 or 12, characterized in that, The first type of SSB and the N second type of SSB are SSBs in the same cell; or, The first type of SSB and the N second type of SSB are SSBs from different cells; or, The first type of SSB and a portion of the N second type SSBs are SSBs in the same cell, while the first type of SSB and another portion of the N second type SSBs are SSBs in different cells.

14. The method according to any one of claims 11 to 13, characterized in that, The first type of SSB and the N second type of SSB are SSBs from different downlink frequency domain unit sets or different carriers; or, The SSB of the first type and one of the N SSBs of the second type are SSBs of the same downlink frequency domain unit set or SSBs of the same carrier. The SSBs of the first type and the other SSBs of the second type among the N SSBs of the second type are SSBs of different downlink frequency domain unit sets or SSBs of different carriers.

15. The method according to any one of claims 11 to 14, characterized in that, When N is greater than 1, The N second-type SSBs are SSBs in the same cell; or, The N second-type SSBs are SSBs from different cells; or, Of the N second-type SSBs, some are SSBs in the same cell, and the other part are SSBs in different cells.

16. The method according to any one of claims 11 to 15, characterized in that, When N is greater than 1, the N second-type SSBs are SSBs from different frequency domain unit sets or different carriers.

17. The method according to any one of claims 11 to 16, characterized in that, When N is greater than 1, any two SSBs of the second type among the N second type SSBs have different SSB transmission opportunities; And / or, The SSB transmission opportunity corresponding to the first type of SSB is different from the SSB transmission opportunity corresponding to any one of the N second type SSBs.

18. The method according to any one of claims 11 to 17, characterized in that, When N is greater than 1, The N second-type SSBs have the same SSB time-frequency structure; or... At least two of the N second-type SSBs have different time-frequency structures.

19. The method according to any one of claims 11 to 18, characterized in that, The first type of SSB does not have the functionality of the second type of SSB; or, The first type of SSB possesses the functionality of another second type of SSB besides the N second type SSBs; or, The first type of SSB has the functionality of one of the N second type SSBs.

20. The method according to any one of claims 11 to 19, characterized in that, The second type of SSB includes: SSBs determined based on auxiliary information.

21. The method according to any one of claims 11 to 20, characterized in that, The second type of SSB includes at least one of the following: an SSB dedicated to a specific set of functions or capabilities, an SSB dedicated to a specific service, an SSB dedicated to a specific spectrum resource, or an SSB dedicated to a specific radio access technology (RAT).

22. The method according to any one of claims 1 to 21, characterized in that, The first type of SSB includes at least one of the following: SSBs detected by terminal devices that support the target RAT, SSBs transmitted on frequencies in a preset candidate frequency set, and minimum capability SSBs.

23. The method of claim 22, wherein, The minimum capability SSB includes: the SSB with detection capability that is the lowest capability terminal device in the network system corresponding to the target RAT.

24. The method according to any one of claims 1 to 23, characterized in that, The SSB time-frequency structure corresponding to the first type of SSB is the same as the SSB time-frequency structure corresponding to the target second type of SSB; or... The SSB time-frequency structure corresponding to the first type of SSB is different from the SSB time-frequency structure corresponding to the target second type of SSB.

25. The method according to any one of claims 1 to 24, characterized in that, The first type of SSB is a periodically transmitted channel or signal; and / or, the first auxiliary information is periodically transmitted information.

26. A method of wireless communication, the method comprising: The method is executed by a terminal device, and the method includes: Send a first type of synchronization signal block (SSB), the first type of SSB being used by the terminal device to determine first auxiliary information, the first information being used to determine a target second type of SSB; Based on the first auxiliary information, the target's second type of SSB is sent.

27. The method of claim 26, wherein, The first type of SSB is used by the terminal device to determine the first auxiliary information, including one of the following: The first type of SSB carries the first auxiliary information; The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set, and the first time-frequency resource is used to transmit the physical downlink shared channel (PDSCH) carrying the first auxiliary information; The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set, and the first time-frequency resource is used to transmit the physical downlink control channel (PDCCH) carrying the first auxiliary information; The first type of SSB is used to determine the first time-frequency resource in the first downlink frequency domain unit set, and the first time-frequency resource is used to transmit the PDCCH that carries the first auxiliary information of the PDSCH.

28. The method of claim 27, wherein, The first type of SSB is used to determine a first time-frequency resource in a first downlink frequency domain cell set, including at least one of the following: The first type of SSB carries indication information for determining the first time-frequency resource; The first type of SSB carries indication information for determining the first downlink frequency domain cell set; There is a mapping relationship between the time-frequency resource where the first type of SSB is located and the first time-frequency resource, or the first time-frequency resource is determined based on the time-frequency resource where the first type of SSB is located according to a preset rule.

29. The method according to claim 27 or 28, characterized in that, The first type of SSB is used to determine at least one of the following: the time-domain position of the first time-frequency resource in the first downlink frequency domain cell set, the frequency-domain position of the first time-frequency resource in the first downlink frequency domain cell set, and the quasi-co-address QCL relationship corresponding to the first time-frequency resource; And / or, The terminal device receives the first auxiliary information in the first downlink frequency domain unit set based on the first type of SSB.

30. The method according to any one of claims 26 to 29, characterized in that, The first auxiliary information is used to determine the second type of SSB of the target, including: the first auxiliary information is used to determine at least one of the following: The frequency point of the target's second type of SSB; The temporal location of the second type of SSB of the target; The period of the target second type of SSB; The index information of the second type of SSB of the target; The subcarrier spacing SCS information of the second type of SSB of the target; Information on the second downlink frequency domain cell set corresponding to the second type of SSB of the target; SCS information of the second downlink frequency domain unit set corresponding to the second type of SSB of the target; The type of the second type of SSB of the target; The random access resource configuration information corresponding to the second type of SSB of the target; The first access prohibition information corresponding to the target second type of SSB is used to indicate whether to prohibit the terminal device from detecting the target second type of SSB; The cell identifier corresponding to the second type of SSB of the target; The indication information is as to whether the cell identifier corresponding to the second type of SSB is the same as the cell identifier corresponding to the first type of SSB; The indication information is whether the downlink timing information corresponding to the second type of SSB of the target is the same as the downlink timing information corresponding to the first type of SSB; The information indicates whether the target second type of SSB has a QCL relationship with the first type of SSB.

31. The method according to any one of claims 26 to 30, characterized in that, The target second type of SSB is used to determine a first system message, the first system message including the system message corresponding to the target second type of SSB.

32. The method of claim 31, wherein, The first system message is used to determine at least one of the following: The cell identifier corresponding to the second type of SSB of the target; The paging configuration information corresponding to the second type of SSB of the target; The carrier bandwidth configuration information corresponding to the second type of SSB of the target; The random access resource configuration information corresponding to the second type of SSB of the target; The second access prohibition information corresponding to the second type of SSB of the target is used to indicate whether the terminal device is prohibited from accessing the cell corresponding to the second type of SSB of the target.

33. The method of claim 31 or 32, wherein, The target second type of SSB is used to determine the first system message, including one of the following: The target second type of SSB carries the first system message; The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDSCH carrying the first system message; The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDCCH carrying the first system message; The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain unit set, and the second time-frequency resource is used to transmit the PDCCH carrying the PDSCH of the first system message.

34. The method of claim 33, wherein, The target second type of SSB is used to determine the second time-frequency resource in the second downlink frequency domain cell set, including at least one of the following: The target second type of SSB carries indication information for determining the second time-frequency resource; The second type of target SSB carries indication information for determining the second downlink frequency domain cell set; There is a mapping relationship between the time-frequency resource where the target second type of SSB is located and the second time-frequency resource, or the second time-frequency resource is determined based on the time-frequency resource where the target second type of SSB is located according to a preset rule.

35. The method of any one of claims 31 to 34, wherein, The target second type of SSB is used to determine at least one of the following: the time-domain position of the second time-frequency resource in the second downlink frequency domain unit set, the frequency-domain position of the second time-frequency resource in the second downlink frequency domain unit set, and the QCL relationship corresponding to the second time-frequency resource; And / or, The terminal device receives the first system message in the second downlink frequency domain unit set based on the target second type of SSB.

36. The method according to any one of claims 26 to 35, characterized in that, The first type of SSB is used to determine N auxiliary information, or the SSB transmission opportunity corresponding to the first type of SSB is used to determine N auxiliary information, wherein the SSB transmission opportunity includes N SSBs, and each of the N SSBs is used to determine one auxiliary information; The N auxiliary information pieces are used to determine N second-type SSBs; wherein each of the N auxiliary information pieces is used to determine a second-type SSB, and the N auxiliary information pieces include the first auxiliary information, where N is a positive integer.

37. The method of any one of claims 26 to 35, wherein, The first auxiliary information is used to determine N second-type SSBs, the N second-type SSBs including the target second-type SSB, where N is a positive integer.

38. The method according to claim 36 or 37, characterized in that, The first type of SSB and the N second type of SSB are SSBs in the same cell; or, The first type of SSB and the N second type of SSB are SSBs from different cells; or, The first type of SSB and a portion of the N second type SSBs are SSBs in the same cell, while the first type of SSB and another portion of the N second type SSBs are SSBs in different cells.

39. The method according to any one of claims 36 to 38, characterized in that, The first type of SSB and the N second type of SSB are SSBs from different downlink frequency domain unit sets or different carriers; or, The SSB of the first type and one of the N SSBs of the second type are SSBs of the same downlink frequency domain unit set or SSBs of the same carrier. The SSBs of the first type and the other SSBs of the second type among the N SSBs of the second type are SSBs of different downlink frequency domain unit sets or SSBs of different carriers.

40. The method of any one of claims 36 to 39, wherein, When N is greater than 1, The N second-type SSBs are SSBs within the same cell; or... The N second-type SSBs are SSBs from different cells; or, Of the N second-type SSBs, some are SSBs in the same cell, and the other part are SSBs in different cells.

41. The method according to any one of claims 36 to 40, wherein, When N is greater than 1, the N second-type SSBs are SSBs from different frequency domain unit sets or different carriers.

42. The method according to any one of claims 36 to 41, characterized in that, When N is greater than 1, any two SSBs of the second type among the N second type SSBs have different SSB transmission opportunities; And / or, The SSB transmission opportunity corresponding to the first type of SSB is different from the SSB transmission opportunity corresponding to any one of the N second type SSBs.

43. The method of any one of claims 36 to 42, wherein, When N is greater than 1, The N second-type SSBs have the same SSB time-frequency structure; or... At least two of the N second-type SSBs have different time-frequency structures.

44. The method according to any one of claims 36 to 43, characterized in that, The first type of SSB does not have the functionality of the second type of SSB; or, The first type of SSB possesses the functionality of another second type of SSB besides the N second type SSBs; or, The first type of SSB has the functionality of one of the N second type SSBs.

45. The method according to any one of claims 36 to 44, wherein, The second type of SSB includes: SSBs determined based on auxiliary information.

46. The method of any one of claims 36 to 45, wherein, The second type of SSB includes at least one of the following: an SSB dedicated to a specific set of functions or capabilities, an SSB dedicated to a specific service, an SSB dedicated to a specific spectrum resource, or an SSB dedicated to a specific radio access technology (RAT).

47. The method of any one of claims 26 to 46, wherein, The first type of SSB includes at least one of the following: SSBs detected by terminal devices that support the target RAT, SSBs transmitted on frequencies in a preset candidate frequency set, and minimum capability SSBs.

48. The method of claim 47, wherein, The minimum capability SSB includes: the SSB with detection capability that is the lowest capability terminal device in the network system corresponding to the target RAT.

49. The method according to any one of claims 26 to 48, characterized in that, The SSB time-frequency structure corresponding to the first type of SSB is the same as the SSB time-frequency structure corresponding to the target second type of SSB; or... The SSB time-frequency structure corresponding to the first type of SSB is different from the SSB time-frequency structure corresponding to the target second type of SSB.

50. The method of any one of claims 26 to 49, wherein, The first type of SSB is a periodically transmitted channel or signal; and / or, the first auxiliary information is periodically transmitted information.

51. A wireless communication device, comprising: The device includes: The processing module is configured to determine first auxiliary information based on the received first type of synchronization signal block (SSB), wherein the first type of SSB is used to determine the first auxiliary information, and the first auxiliary information is used to determine the target second type of SSB; The receiving module is configured to receive the target's second type of SSB based on the first auxiliary information.

52. A wireless communication device, characterized in that, The device includes: The transmitting module is used to transmit a first type of synchronization signal block (SSB), the first type of SSB being used by the terminal device to determine first auxiliary information, and the first information being used to determine a target second type of SSB; The sending module is further configured to send the target's second type of SSB based on the first auxiliary information.

53. A communication device, characterized in that, The communication device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program to implement the method as claimed in any one of claims 1 to 25, or to implement the method as claimed in any one of claims 26 to 50.

54. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that is executed by a processor to implement the method as described in any one of claims 1 to 25, or the method as described in any one of claims 26 to 50.

55. A chip, characterized in that, The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running, are used to implement the method as described in any one of claims 1 to 25, or to implement the method as described in any one of claims 26 to 50.

56. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium, which a processor reads from and executes to implement the method as claimed in any one of claims 1 to 25, or the method as claimed in any one of claims 26 to 50.

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