Wireless communication method, terminal device, and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The wireless communication method comprises: a terminal device receives all or part of information of an SSB, wherein the SSB is located within a first bandwidth, the part of the information is located within a second bandwidth, the part of the information comprises a first part of a PBCH and a first synchronization signal, all of the information comprises the first part of the PBCH, a second part of the PBCH, and the first synchronization signal, and the second part of the PBCH and the first part of the PBCH carry different system information.

Description

Wireless communication methods, terminal devices, and network devices Technical Field

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

[0002] In some communication systems (such as new radio (NR) systems), the synchronization signal block (SSB) can provide synchronization signals and / or a physical broadcast channel (PBCH) for terminal devices to access the network. As communication systems continue to evolve, terminal devices with different capabilities may require different information from the SSB. Therefore, how to design the SSB becomes a problem that needs to be addressed. Summary of the Invention

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

[0004] In a first aspect, a wireless communication method is provided, comprising: a terminal device receiving all or part of the information of an SSB, wherein the SSB is located within a first bandwidth and the part of the information is located within a second bandwidth; wherein the part of the information includes a first part of a PBCH and a first synchronization signal, and the all information includes the first part of the PBCH, a second part of the PBCH and the first synchronization signal, and the second part of the PBCH carries different system information from the first part of the PBCH.

[0005] In a second aspect, a wireless communication method is provided, comprising: a network device sending an SSB to a terminal device, the SSB being located within a first bandwidth and the SSB including partial information located within a second bandwidth; wherein the partial information includes a first part of a PBCH and a first synchronization signal, and the complete information of the SSB includes the first part of the PBCH, a second part of the PBCH, and the first synchronization signal, and the second part of the PBCH carries different system information from the first part of the PBCH.

[0006] Thirdly, a terminal device is provided, comprising: a receiving module for receiving all or part of the information of an SSB, wherein the SSB is located within a first bandwidth and the part of the information is located within a second bandwidth; wherein the part of the information includes a first part of a PBCH and a first synchronization signal, and the all information includes the first part of the PBCH, a second part of the PBCH and the first synchronization signal, and the second part of the PBCH carries different system information from the first part of the PBCH.

[0007] Fourthly, a network device is provided, comprising: a transmitting module for transmitting an SSB to a terminal device, wherein the SSB is located within a first bandwidth and includes partial information located within a second bandwidth; wherein the partial information includes a first part of a PBCH and a first synchronization signal, and the complete information of the SSB includes the first part of the PBCH, a second part of the PBCH, and the first synchronization signal, and the second part of the PBCH carries different system information from the first part of the PBCH.

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

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

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

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

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

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

[0014] In this embodiment, the terminal device can choose to receive all or part of the SSB information, and the all information carries information not included in the part information. In other words, this embodiment designs an SSB structure with multiple bandwidths, and the information carried in different parts of the bandwidth differs. In this way, the terminal device can choose (e.g., based on the terminal device's bandwidth capability) to receive the parts of the SSB located in different bandwidths, which is beneficial for different terminal devices to access the network using the same SSB structure, thereby simplifying communication system design and reducing cell search signaling overhead. Attached Figure Description

[0015] Figure 1 is a system architecture example diagram of a wireless communication system applicable to embodiments of this application.

[0016] Figure 2 is an example diagram of the signal transmission process in a wireless communication system to which embodiments of this application are applicable.

[0017] Figure 3 is an example diagram of the reuse mode of SSB and control resource set 0.

[0018] Figure 4 is a structural example diagram of an SSB provided in an embodiment of this application.

[0019] Figure 5 is a structural example diagram of an SSB provided in another embodiment of this application.

[0020] Figure 6 is a structural example diagram of an SSB provided in another embodiment of this application.

[0021] Figure 7 is a structural example diagram of an SSB provided in another embodiment of this application.

[0022] Figure 8 is a structural example diagram of an SSB provided in another embodiment of this application.

[0023] Figure 9 is a structural example diagram of an SSB provided in another embodiment of this application.

[0024] Figure 10 is a structural example diagram of an SSB provided in another embodiment of this application.

[0025] Figure 11 is a structural example diagram of an SSB provided in another embodiment of this application.

[0026] Figure 12 is a structural example diagram of an SSB provided in another embodiment of this application.

[0027] Figure 13 is a structural example diagram of an SSB provided in another embodiment of this application.

[0028] Figure 14 is a structural example diagram of an SSB provided in another embodiment of this application.

[0029] Figure 15 is a structural example diagram of an SSB provided in another embodiment of this application.

[0030] Figure 16 is a structural example diagram of an SSB provided in another embodiment of this application.

[0031] Figure 17 is a flowchart illustrating a wireless communication method provided in an embodiment of this application.

[0032] Figure 18 is a flowchart illustrating a wireless communication method provided in another embodiment of this application.

[0033] Figure 19 is a flowchart illustrating a wireless communication method provided in another embodiment of this application.

[0034] Figure 20 is a flowchart illustrating a wireless communication method provided in another embodiment of this application.

[0035] Figure 21 is a flowchart illustrating a wireless communication method provided in another embodiment of this application.

[0036] Figure 22 is a schematic diagram of the structure of the terminal device provided in the embodiment of this application.

[0037] Figure 23 is a schematic diagram of the structure of the network device provided in an embodiment of this application.

[0038] Figure 24 is a schematic structural diagram of the communication device provided in an embodiment of this application. Detailed Implementation

[0039] Communication system architecture

[0040] Figure 1 is a system architecture example diagram of a wireless communication system 100 to which embodiments of this application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0041] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

[0042] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0043] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0044] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0045] The network device in this application embodiment can be a device for communicating with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0046] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0047] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0048] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0049] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0050] Signal transmission process in a wireless communication system

[0051] Figure 2 is an example diagram of the signal transmission process in a wireless communication system to which this application embodiment applies. As shown in Figure 2, the signal transmission process in a wireless communication system can be broadly divided into various signal processing processes as shown in Figure 2.

[0052] At the transmitting end, the transmitter can perform channel coding on the information to be transmitted during the channel coding process to obtain the encoded code stream. The information to be transmitted can be in the form of a bit stream. Then, the transmitter can modulate the code stream into modulation symbols during the modulation process. During pilot insertion, the transmitter can insert pilot symbols into the modulation symbols to form the signal to be transmitted. The pilot symbols can be used by the receiver for channel estimation and symbol detection. The signal to be transmitted can be carried in the channel and arrive at the receiving end. In some embodiments, noise may be superimposed on the signal to be transmitted during transmission through the channel.

[0053] At the receiving end, the receiver first uses pilot symbols to perform channel estimation, obtaining channel state information (CSI). This CSI is then fed back to the transmitter via a feedback link, allowing the transmitter to adjust channel coding, modulation, precoding, and other methods. Afterward, the receiver can perform symbol detection, demodulation, and channel decoding. During symbol detection, the receiver performs symbol detection on the received modulated symbols, obtaining the detection results. During demodulation, the receiver demodulates the received modulated symbols based on the detection results, obtaining the bitstream. During channel decoding, the receiver decodes the bitstream to obtain the recovered information, which can be in the form of a bitstream.

[0054] It should be understood that the signal processing procedures shown in Figure 2 are merely illustrative examples of common signal processing procedures in wireless communication systems. Wireless communication systems may also include signal processing procedures such as resource mapping, precoding, interference cancellation, and CSI measurement. These signal processing procedures can be designed and implemented independently, for example, through separate artificial intelligence (AI) models. These individual modules can then be integrated to form a complete wireless communication system. For the sake of brevity, this application will not elaborate further.

[0055] Synchronization signal block

[0056] The synchronization signal block can also be called the synchronization signal / physical broadcast channel block (SS / PBCH block, or simply SSB). That is, in this embodiment, SSB can be replaced by SS / PBCH block. The following description uses SSB as an example.

[0057] The SSB comprises four orthogonal frequency division multiplexing (OFDM) symbols in the time domain. The SSB can include a synchronization signal (SS) and a PBCH, where the synchronization signal can include a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The structure of the SSB in an NR system is described below with reference to Figure 3. Referring to Figure 3, in an NR system, the PSS is located in the first symbol, and its bandwidth in the frequency domain is 12 physical resource blocks (PRBs). The SSS is located in the third symbol, and its bandwidth in the frequency domain is also 12 PRBs. The PBCH is located in the second and fourth symbols, and its bandwidth in the second and fourth symbols is 20 PRBs (i.e., it occupies the full bandwidth of the SSB). In the third symbol, it occupies the lower four PRBs and the upper four PRBs of the SSB bandwidth (i.e., it occupies the bandwidth excluding the SSS).

[0058] It should be noted that the SSB in the NR system is designed for enhanced mobile broadband (eMBB) terminal devices, and the bandwidth of this SSB is 20 PRBs. Taking a subcarrier spacing (SCS) of 15kHz as an example, the bandwidth of this SSB is 3.6MHz.

[0059] In some embodiments, in the SSB shown in FIG3, the time domain resources occupied by the PBCH may include a demodulation reference signal (DMRS) for demodulating the PBCH.

[0060] Control resource set (CORESET)

[0061] To reduce the complexity of blind detection of the physical downlink control channel (PDCCH) and avoid resource waste, some communication systems (such as NR systems) encapsulate information such as the frequency band occupied by the PDCCH in the frequency domain and the number of OFDM symbols occupied in the time domain in CORESET.

[0062] CORESET 0 (or CORESET#0) is the first CORESET that the terminal device needs to monitor during the initial access process. The location of CORESET 0 can be indicated by the master information block (MIB) carried in the PBCH of the SSB. Since the information that the MIB can carry is limited, the NR system defines several multiplexing modes (or multiplexing patterns) between CORESET 0 and the SSB. The terminal device selects one of these multiplexing modes through the MIB so that it can determine the location of CORESET 0 according to the multiplexing mode indicated by the MIB. The following describes the several multiplexing modes between CORESET 0 and the SSB with reference to Figure 3.

[0063] As shown in Figure 3, the multiplexing modes between CORESET 0 and SSB include multiplexing mode 1, multiplexing mode 2, and multiplexing mode 3. Multiplexing mode 1 uses time division multiplexing (TDM). That is, in multiplexing mode 1, in the time domain, SSB and the associated CORESET 0 appear at different times; in the frequency domain, the bandwidth of SSB completely covers or nearly completely covers the bandwidth of the associated CORESET 0. Multiplexing mode 2 uses both TDM and frequency division multiplexing (FDM). That is, in multiplexing mode 2, in the time domain, SSB and the associated CORESET 0 appear at different times; in the frequency domain, the bandwidth of SSB does not overlap with the bandwidth of the associated CORESET 0 and is as close as possible. Multiplexing mode 3 uses FDM. In other words, in multiplexing mode 3, in the time domain, SSB and associated CORESET 0 occur at the same time; in the frequency domain, the bandwidth of SSB and associated CORESET 0 do not overlap and are as close as possible.

[0064] After determining the location of CORESET 0, the terminal device can detect the PDCCH based on this location to obtain system information (SIB) for scheduling based on the PDCCH. In one implementation, the terminal device first detects the SSB, determines the multiplexing mode between the SSB and CORESET 0 based on the MIB information carried in the PBCH of the SSB, then determines the location of CORESET 0 based on this multiplexing mode, searches for downlink control information (DCI) for scheduling other SIBs in CORESET 0, and then determines the time-frequency resource location of the physical downlink shared channel (PDSCH) carrying the SIB based on the DCI, and obtains the SIB from the PDSCH.

[0065] As can be seen from the above description, in the NR system, the SSB has a single (or fixed) bandwidth size so that various terminal devices can make initial access through the SSB. However, the single SSB bandwidth cannot support the access of terminal devices with bandwidth capabilities less than the SSB bandwidth (such as low-end IoT devices). This causes the communication system to need to design a separate initial access signal and access method for low-end IoT devices, resulting in additional system complexity and signaling overhead.

[0066] Furthermore, in future communication systems, with the diversification of terminal device capabilities, the communication system may need to extend the SSB, for example, by extending the PBCH within the SSB. In this case, how to extend the SSB is also a problem that needs to be solved.

[0067] In summary, how to design an SSB becomes a problem that needs to be solved.

[0068] To address the aforementioned issues, this application provides an SSB structure with multiple bandwidths, where the information carried in different portions of the SSB varies. This allows terminal devices to select (e.g., based on their bandwidth capabilities) the portions of the SSB located in different bandwidths, facilitating the use of the same SSB structure by different terminal devices to access the network. This simplifies communication system design and reduces cell search signaling overhead.

[0069] The SSB structure provided in the embodiments of this application will be described below.

[0070] In the embodiments of this application, the SSB can support initial access with multiple bandwidths (or different bandwidths). For example, the SSB can support initial access with two bandwidths. As another example, the SSB can support initial access with three or more bandwidths. The following description uses the example of the SSB supporting initial access with a first bandwidth and a second bandwidth; the support for other bandwidths is similar and will not be detailed in the embodiments of this application.

[0071] Figure 4 is a schematic diagram of an SSB structure provided in an embodiment of this application. As shown in Figure 4, the frequency domain bandwidth occupied by the SSB is the first bandwidth. The SSB carries all information within the first bandwidth, and the SSB can also carry some information within the second bandwidth. That is, the SSB provided in this embodiment of the application can include a portion located within the first bandwidth and a portion located within the second bandwidth, wherein the portion located within the first bandwidth is used to carry all information, and the portion located within the second bandwidth is used to carry some information. In this way, the SSB can support initial access with multiple bandwidths. For example, the terminal device can perform initial access by receiving all information within the first bandwidth (e.g., completing the cell search process). As another example, the terminal device can perform initial access by receiving some information within the second bandwidth.

[0072] In this embodiment of the application, the SSB mentioned in this embodiment may include an SSB located within a first bandwidth and an SSB located within a second bandwidth. The SSB located within the first bandwidth includes all of the aforementioned information, and the SSB located within the second bandwidth includes only a portion of the aforementioned information. The following description will use the portion located within the first bandwidth as the SSB located within the first bandwidth and the portion located within the second bandwidth as the SSB located within the second bandwidth as an example.

[0073] It should be noted that the SSB located within the first bandwidth and the SSB located within the second bandwidth mentioned in the embodiments of this application are not two separate SSBs, but rather different parts of a single SSB structure. In this case, for the network device, regardless of the type of terminal device receiving the SSB, the SSB sent by the network device is the same (i.e., sending the entire SSB or sending the SSB located within the first bandwidth). The terminal device can choose to receive the SSB located within the first bandwidth or the SSB located within the second bandwidth based on actual circumstances (e.g., the type of terminal device, the capabilities of the terminal device, etc.).

[0074] In some embodiments, the size of the second bandwidth is smaller than the size of the first bandwidth. Or, the size of the first bandwidth is larger than the size of the second bandwidth.

[0075] For example, the size of the first bandwidth can be 20 PRBs. In this case, as long as the size of the second bandwidth is less than 20 PRBs, such as 12 PRBs, it can be compatible with the structure of 5G SSB. In some embodiments, when the size of the second bandwidth is 12 PRBs, the second bandwidth can occupy 127 resource elements (REs) or 144 REs.

[0076] For example, the size of the second bandwidth can be 20 PRBs. In this case, as long as the size of the first bandwidth is greater than 20 PRBs, such as 36 PRBs or 40 PRBs, it is acceptable.

[0077] In some embodiments, the first bandwidth includes the second bandwidth (i.e., the second bandwidth is within the first bandwidth). For example, the first bandwidth includes the second bandwidth, and the size of the first bandwidth is greater than the size of the second bandwidth. Alternatively, the second bandwidth is within the first bandwidth, and the size of the second bandwidth is less than the size of the first bandwidth.

[0078] In some embodiments, the SSB within the first bandwidth can also be understood as or replaced by the full bandwidth SSB or the entire SSB or all the information of the SSB. Correspondingly, the first bandwidth can also be understood as or replaced by the full bandwidth of the SSB.

[0079] In some embodiments, the SSB within the second bandwidth can also be understood as or replaced by the portion of the basic SSB or the full-bandwidth SSB located within the second bandwidth, or a portion of the SSB information. Correspondingly, the second bandwidth can also be understood as or replaced by the basic bandwidth of the SSB or a portion of the SSB bandwidth.

[0080] In this way, in the embodiments of this application, different terminal devices can access the network through the same SSB structure, which simplifies the design of the communication system and reduces the overhead of cell search signaling. For example, terminal devices with weak bandwidth capabilities (such as low-end IoT devices) can access the network through an SSB with a smaller bandwidth (i.e., an SSB located within the second bandwidth), while terminal devices with stronger bandwidth capabilities (such as eMBB terminal devices) can access the network through a full-bandwidth SSB (i.e., an SSB located within the first bandwidth), avoiding the additional signaling overhead caused by multiple synchronization / broadcast signals, thereby improving the spectrum efficiency of the system.

[0081] In some embodiments, the information provided by the SSB within the first bandwidth differs from the information provided by the SSB within the second bandwidth; that is, the information provided by the SSB located in the first bandwidth differs from the information provided by the SSB located in the second bandwidth. For example, the SSB may provide more information (e.g., more system information) within the first bandwidth than within the second bandwidth, or in other words, the SSB located in the first bandwidth may provide more information than the SSB located in the second bandwidth. The information provided by the SSB within the first bandwidth and the information provided by the SSB within the second bandwidth are described below.

[0082] In this embodiment, the SSB located within the first bandwidth includes a synchronization signal and a PBCH, and the SSB located within the second bandwidth also includes a synchronization signal and a PBCH. The PBCH included in the SSB located within the second bandwidth is a portion of the PBCH included in the SSB located within the first bandwidth. That is, in this embodiment, the PBCH may include two parts (hereinafter referred to as the first part of the PBCH and the second part of the PBCH), wherein the first part of the PBCH is carried in the SSB located within the second bandwidth, and the second part of the PBCH is carried in the SSB located within the first bandwidth but outside the second bandwidth.

[0083] In some embodiments, the SSB located within the first bandwidth and the SSB located within the second bandwidth include the same synchronization signal. For example, both the SSB located within the first bandwidth and the SSB located within the second bandwidth include the first synchronization signal.

[0084] In some embodiments, the synchronization signals included in the SSB located within the first bandwidth are different from those included in the SSB located within the second bandwidth. For example, the SSB located within the first bandwidth includes a first synchronization signal and a second synchronization signal, while the SSB located within the second bandwidth includes only the first synchronization signal.

[0085] In some embodiments, the partial information of the SSB includes a first portion of the PBCH and a first synchronization signal, that is, the SSB located within the second bandwidth includes a first portion of the PBCH and a first synchronization signal.

[0086] In some embodiments, the complete information of the SSB may include a first part of the PBCH, a second part of the PBCH, and a first synchronization signal; that is, the SSB located within the first bandwidth includes the first part of the PBCH, the second part of the PBCH, and the first synchronization signal.

[0087] In some embodiments, all information of the SSB may include a first part of the PBCH, a second part of the PBCH, a first synchronization signal, and a second synchronization signal. That is, the SSB located within the first bandwidth may include a first part of the PBCH, a second part of the PBCH, a first synchronization signal, and a second synchronization signal.

[0088] In some embodiments, the difference between the above partial information and all information is that the above partial information does not include the second part of the PBCH, that is, the SSB located within the first bandwidth and outside the second bandwidth includes the second part of the PBCH.

[0089] In some embodiments, the SSB located within the first bandwidth and outside the second bandwidth may include other information besides the second portion of the PBCH. For example, the SSB located within the first bandwidth and outside the second bandwidth may include the second portion of the PBCH and a second synchronization signal.

[0090] The first part of PBCH, the second part of PBCH, the first synchronization signal, and the second synchronization signal are described below.

[0091] In some embodiments, the first part of the PBCH can be understood as or referred to as the basic PBCH, while the second part of the PBCH can be understood as or referred to as the additional PBCH.

[0092] In some embodiments, the system information carried in the second part of the PBCH differs from that carried in the first part of the PBCH. That is, the system information carried in the second part of the PBCH is not included in the first part of the PBCH.

[0093] In some embodiments, the difference between the system information carried by the second part of the PBCH and the first part of the PBCH refers to a difference in the type (or entry) of system information carried by the second part of the PBCH compared to the first part, rather than a simple difference in the value of a specific piece of information. For example, the second part of the PBCH carries information about PDCCH transmission resources used for scheduling system information, while the first part of the PBCH does not carry such information. Another example is that the second part of the PBCH does not carry the system frame number, while the first part of the PBCH does.

[0094] In some embodiments, the first part of the PBCH can carry basic MIB information, while the second part of the PBCH can carry additional MIB information. However, the embodiments of this application are not limited to this. For example, the first part of the PBCH can carry information carried by the PBCH in the current NR system, while the second part of the PBCH can carry extended system information introduced by future communication systems.

[0095] In some embodiments, the first part of the PBCH may include one or more of the following information: system frame information, DMRS information. For example, the first part of the PBCH may include one or more of the following information: system frame number, DMRS location information. In this way, the terminal device can perform frame synchronization and obtain system information (such as MIB and / or SIB) based on the system frame number and DMRS location information.

[0096] In some embodiments, the DMRS indicated by the first part of the PBCH is used to demodulate the PDSCH for transmitting system information. That is, the DMRS indicated by the first part of the PBCH is the DMRS of the PDSCH for transmitting system information.

[0097] As an example, the first part of the PBCH may include the system frame number.

[0098] As another example, the first part of the PBCH may include the location information of the DMRS.

[0099] As yet another example, the first part of the PBCH may include the system frame number and the location information of the DMRS.

[0100] In some embodiments, the first part of the PBCH may carry other information in addition to the information described above. For example, the first part of the PBCH may also carry other information such as half-frame configuration, broadcast period of other system information (such as SIB1), etc.

[0101] In some embodiments, the second portion of the PBCH can carry additional system information (such as additional MIB information) not included in the first portion of the PBCH. This allows network devices to obtain more flexible resource scheduling during initial access. For example, network devices can schedule multiple first subcarrier intervals, configure PDCCH transmission resources for scheduling system information at multiple candidate locations, and configure initial BWPs at multiple candidate locations before establishing a radio resource control (RRC) connection, thereby facilitating better initial access performance and higher spectral efficiency.

[0102] In some embodiments, the second part of the PBCH may include one or more of the following information: information on PDCCH transmission resources for scheduling system information, information on the initial bandwidth part (BWP), and information on the first subcarrier spacing.

[0103] As an example, the second part of the PBCH may include information about the PDCCH transport resources used for scheduling system information.

[0104] As another example, the second part of the PBCH may include information about the initial BWP.

[0105] As yet another example, the second part of the PBCH may include information about the first subcarrier spacing.

[0106] As yet another example, the second part of the PBCH may include information about the PDCCH transport resources used for scheduling system information and information about the initial BWP.

[0107] As yet another example, the second part of the PBCH may include information about the PDCCH transmission resources used for scheduling system information and information about the first subcarrier interval.

[0108] As yet another example, the second part of the PBCH may include information about the initial BWP and information about the first subcarrier spacing.

[0109] As yet another example, the second part of the PBCH may include information on the PDCCH transmission resources used for scheduling system information, information on the initial BWP, and information on the first subcarrier interval.

[0110] In some embodiments, the information of the PDCCH transmission resources used for scheduling system information may include one or more of the following: location information of the PDCCH transmission resources, and size information of the PDCCH transmission resources. For example, the information of the PDCCH transmission resources used for scheduling system information may include location information of the PDCCH transmission resources. As another example, the information of the PDCCH transmission resources used for scheduling system information may include both location information and size information of the PDCCH transmission resources.

[0111] In some embodiments, the location information of the PDCCH transmission resource can be implemented by indicating the time-domain location and / or frequency-domain location of the PDCCH transmission resource.

[0112] In some embodiments, the location information of the PDCCH transmission resource can be implemented by indicating the multiplexing mode between the locations of the SSB and the PDCCH transmission resource. For example, the SSB can indicate the multiplexing mode between the locations of the PDCCH transmission resource and the SSB using one or more bits of information, so that the terminal device can determine the location of the PDCCH transmission resource based on the multiplexing mode and the location of the SSB. This application embodiment does not limit the multiplexing mode between the locations of the SSB and the PDCCH transmission resource; for example, the multiplexing mode between the locations of the SSB and the PDCCH transmission resource can refer to the multiplexing mode shown in Figure 3 above. Of course, the multiplexing mode between the locations of the SSB and the PDCCH transmission resource can also include other and more types of multiplexing modes.

[0113] In some embodiments, the location information of the PDCCH transmission resource indicated by the second part of the PBCH is determined from one or more candidate PDCCH transmission resource locations. This application does not limit the location of these one or more candidate PDCCH transmission resource locations; for example, these one or more candidate PDCCH transmission resource locations can refer to the candidate locations determined by the multiplexing mode shown in FIG3.

[0114] In some embodiments, the location of the one or more candidate PDCCH transport resources may be predefined or preconfigured, such as protocol predefined.

[0115] This application does not limit the method of indicating the size information of PDCCH transmission resources in its embodiments. For example, the network device may indicate one or more of the following information in the second part of the PBCH: the frequency domain bandwidth of the PDCCH transmission resources, the time domain length of the PDCCH transmission resources (such as the number of OFDM symbols), so that the terminal device can determine the size of the PDCCH transmission resources.

[0116] In some embodiments, the PDCCH transmission resources used for scheduling system information may include a first control resource set. The first control resource set may include time-domain resources for the PDCCH; for example, the first control resource set may indicate the number of OFDM symbols occupied by the PDCCH in the time domain. In some embodiments, the first control resources may also include frequency-domain resources for the PDCCH; for example, the first control resource set may indicate the frequency band occupied by the PDCCH in the frequency domain.

[0117] In some embodiments, the first control resource set may include PDCCH control resource set 0 (i.e., CORESET 0).

[0118] In some embodiments, the first control resource set may include a PDCCH search space for scheduling system information. In some embodiments, the PDCCH search space may include a type 0 PDCCH common search space.

[0119] In some embodiments, the PDCCH transmission resources used for scheduling system information can also be understood as or referred to as the initial PDCCH transmission resources.

[0120] In some embodiments, the information of the initial BWP may include one or more of the following: the location information of the initial BWP, and the size information of the initial BWP (i.e., the bandwidth of the initial BWP). For example, the information of the BWP may include the location information of the initial BWP. As another example, the information of the BWP may include both the location information and the size information of the initial BWP.

[0121] This application does not limit the initial BWP. Exemplarily, the initial BWP may include one or more of the following: a first downlink BWP activated after cell search, and a first uplink BWP activated after cell search. As an example, the initial BWP may include the first downlink BWP activated after cell search. As another example, the initial BWP may include both the first downlink BWP activated after cell search and the first uplink BWP activated after cell search.

[0122] In some embodiments, the location information of the initial BWP can be implemented by indicating the frequency domain location of the initial BWP.

[0123] In some embodiments, the location information of the initial BWP can be implemented by indicating the relative position between the SSB and the initial BWP. For example, the SSB can indicate the relative position between the initial BWP and the SSB using one or more bits of information, so that the terminal device can determine the position of the initial BWP based on the relative position and the position of the SSB. This application does not limit the relative position between the SSB and the initial BWP. For example, the relative position between the SSB and the initial BWP can include the following three types: an initial BWP position with the same bandwidth and location as the SSB; an initial BWP position adjacent to the SSB and located at the high end of the SSB's frequency domain; and an initial BWP position adjacent to the SSB and located at the low end of the SSB's frequency domain. Of course, the relative position between the SSB and the initial BWP can also include many other types.

[0124] In some embodiments, the location information of the initial BWP indicated by the second part of the PBCH is determined from one or more candidate initial BWP locations. This application does not limit the number of candidate initial BWP locations; exemplarily, the one or more candidate initial BWP locations may include one or more of the following: an initial BWP location having the same bandwidth and location as the SSB; an initial BWP location adjacent to the SSB and located at the high end of the SSB's frequency domain; and an initial BWP location adjacent to the SSB and located at the low end of the SSB's frequency domain.

[0125] In some embodiments, the one or more candidate initial BWP locations may be predefined or preconfigured, such as those predefined by the protocol.

[0126] This application does not limit the method of indicating the size information of the initial BWP. For example, the network device may indicate the frequency domain bandwidth of the initial BWP in the second part of the PBCH so that the terminal device can determine the size of the initial BWP.

[0127] In some embodiments, the first subcarrier spacing described above can be used for one or more of the following: transmitting system information, initial access, and random access. That is, the first subcarrier spacing is the subcarrier spacing used in one or more of the following processes: system information transmission, initial access, and random access. Therefore, in some embodiments, the first subcarrier spacing can also be understood as or referred to as the common subcarrier spacing.

[0128] In some embodiments, the first subcarrier interval described above can be used to determine one or more of the following: the location of PDCCH transmission resources for scheduling system information, and the location of the initial BWP. For example, the first subcarrier interval can be used to determine the location of PDCCH transmission resources for scheduling system information. As another example, the first subcarrier interval can be used to determine the location of the initial BWP. As yet another example, the first subcarrier interval can be used to determine both the location of the PDCCH transmission resources for scheduling system information and the location of the initial BWP.

[0129] In some embodiments, the first subcarrier interval can be used to determine other information besides the location of PDCCH transmission resources for scheduling system information and / or the location of the initial BWP. For example, the first subcarrier interval can also be used to determine the unit size of resource allocation (such as the size of the PRB).

[0130] The embodiments of this application do not limit the value of the first subcarrier interval. For example, the first subcarrier interval may include one of the following subcarrier intervals: 15kHz, 30kHz, 60kHz. Of course, the first subcarrier interval may also include other values, such as 120kHz.

[0131] In some embodiments, the first subcarrier interval indicated by the second portion of the PBCH is determined from one or more candidate subcarrier intervals. This application does not limit the number of candidate subcarrier intervals; exemplarily, the one or more candidate subcarrier intervals may include one or more of the following: 15 kHz, 30 kHz, 60 kHz.

[0132] In some embodiments, the one or more candidate subcarrier intervals may be predefined or preconfigured, such as protocol predefined.

[0133] It should be noted that the information carried by the first and second parts of the PBCH described above is illustrative and the embodiments of this application are not limited thereto. For example, the first part of the PBCH may carry one or more of the following information: system frame number, DMRS location information, and PDCCH transmission resource information for scheduling system information; while the second part of the PBCH may carry one or more of the following information: initial BWP information and first subcarrier spacing information. As another example, the first part of the PBCH may carry one or more of the following information: system frame number, DMRS location information, PDCCH transmission resource information for scheduling system information, initial BWP information, and first subcarrier spacing information; while the second part of the PBCH may carry system information that needs to be carried in the PBCH in future communication systems.

[0134] In some embodiments, the system information carried in the second part of the PBCH can be used to determine a first resource configuration. For example, the system information carried in the second part of the PBCH can be used to determine one or more of the following resource configurations: PDCCH transmission resources for scheduling system information, initial BWP, and first subcarrier spacing.

[0135] In some embodiments, the first resource configuration described above can be determined by predefined parameters (or predefined rules). For example, if the SSB received by the terminal device is an SSB located within the second bandwidth, the terminal device can determine the first resource configuration based on predefined parameters. Alternatively, if the terminal device does not read the second part of the PBCH, the terminal device can determine the configuration related to the system information carried in the second part of the PBCH based on predefined parameters.

[0136] In some embodiments, the terminal device may determine one or more of the following based on predefined parameters: information on PDCCH transmission resources used for scheduling system information, information on the initial BWP, and the first subcarrier spacing. For example, the terminal device may determine the location information and / or size information of the PDCCH transmission resources used for scheduling system information based on predefined parameters. As another example, the terminal device may determine the location information and / or size information of the initial BWP based on predefined parameters. As yet another example, the terminal device may determine one or more of the following based on predefined parameters: location information of the PDCCH transmission resources used for scheduling system information, size information of the PDCCH transmission resources used for scheduling system information, location information of the initial BWP, size information of the initial BWP, and the first subcarrier spacing.

[0137] This application does not limit the predefined parameters used to determine the first resource configuration. Taking the first resource configuration including information on PDCCH transmission resources for scheduling system information as an example, the predefined parameters can be used to indicate that the location of the PDCCH transmission resources for scheduling system information is time-division multiplexed with the SSB. In some embodiments, the predefined parameters can also be used to indicate that the size of the PDCCH transmission resources for scheduling system information is a frequency domain width of a second bandwidth and a time domain length of M symbols. Taking the first resource configuration including information on the initial BWP as an example, the predefined parameters can be used to indicate that the location of the initial BWP is always the same as the location of the SSB. In some embodiments, the predefined parameters can also be used to indicate that the frequency domain width of the initial BWP is a second bandwidth. Taking the first resource configuration including a first subcarrier spacing as an example, the predefined parameters can be used to indicate that the subcarrier spacing of the SSB is always used as the first subcarrier spacing.

[0138] In some embodiments, the second part of the PBCH can be transmitted on the time-domain resources (such as OFDM symbols) occupied by the first part of the PBCH. For example, the second part of the PBCH can be transmitted on all the time-domain resources occupied by the first part of the PBCH. As another example, the second part of the PBCH can be transmitted on a portion of the time-domain resources occupied by the first part of the PBCH. Taking the transmission of the first part of the PBCH on the 2nd and 4th OFDM symbols as an example, the second part of the PBCH can be transmitted on the 2nd and 4th OFDM symbols, or it can be transmitted on only the 2nd OFDM symbols, or it can be transmitted on only the 4th OFDM symbol.

[0139] In some embodiments, the second part of the PBCH can be transmitted on the time-domain resources occupied by the first part of the PBCH and the first synchronization signal. For example, the second part of the PBCH can be transmitted on a portion of the time-domain resources occupied by the first part of the PBCH and the first synchronization signal. As another example, the second part of the PBCH can be transmitted on all the time-domain resources occupied by the first part of the PBCH and the first synchronization signal. Taking the first synchronization signal being transmitted on the 1st and 3rd OFDM symbols and the first part of the PBCH being transmitted on the 2nd and 4th OFDM symbols as an example, the second part of the PBCH can be transmitted on the 1st to 4th OFDM symbols, or on the 2nd and 4th OFDM symbols, or on the 2nd to 4th OFDM symbols, etc.

[0140] In some embodiments, the transmission of the second portion of the PBCH over the time-domain resources occupied by the first portion of the PBCH and the first synchronization signal can mean that the second portion of the PBCH is transmitted over all the time-domain resources of the first portion of the PBCH, and also over the time-domain resources occupied by the first synchronization signal. In some embodiments, the transmission of the second portion of the PBCH over the time-domain resources occupied by the first portion of the PBCH and the first synchronization signal can mean that the second portion of the PBCH is transmitted over a portion of the time-domain resources of the first portion of the PBCH, and also over the time-domain resources occupied by the first synchronization signal. In some embodiments, the transmission of the second portion of the PBCH over the time-domain resources occupied by the first portion of the PBCH and the first synchronization signal can mean that the second portion of the PBCH is transmitted over a portion of the time-domain resources of the first portion of the PBCH, and also over all the time-domain resources occupied by the first synchronization signal.

[0141] In some embodiments, the first part of the PBCH and the second part of the PBCH can be encoded independently.

[0142] In some embodiments, the first part and the second part of the PBCH can be jointly encoded. Joint encoding of the first part and the second part of the PBCH is beneficial for improving the PBCH demodulation performance of a terminal device receiving an SSB located within the first bandwidth. Taking a terminal device with strong bandwidth capability receiving an SSB located within the first bandwidth as an example, joint encoding of the first part and the second part of the PBCH is beneficial for improving the PBCH demodulation performance of the terminal device with strong bandwidth capability.

[0143] In some embodiments, when the first part of the PBCH is jointly encoded with the second part of the PBCH, the first part of the PBCH can be decoded independently to ensure that a terminal device receiving an SSB located within the second bandwidth can demodulate the first part of the PBCH independently. Taking a terminal device with weak bandwidth receiving an SSB located within the second bandwidth as an example, independent decoding of the first part of the PBCH is beneficial to ensuring that the terminal device with weak bandwidth can demodulate the first part of the PBCH independently.

[0144] In this embodiment, the first synchronization signal can be used for synchronization of the terminal device (such as downstream synchronization). In some embodiments, the first synchronization signal can also be understood as or referred to as the basic synchronization signal.

[0145] In some embodiments, the first synchronization signal may include a synchronization signal (or a single synchronization signal) that the terminal device may use for synchronization.

[0146] In some embodiments, the first synchronization signal may include multiple synchronization signals (or more synchronization signals), and the terminal device may use one or more of these multiple synchronization signals for synchronization. This application does not limit the multiple synchronization signals included in the first synchronization signal. Exemplarily, the multiple synchronization signals may include one or more of the following: PSS, SSS. As an example, the multiple synchronization signals may include PSS and SSS.

[0147] In some embodiments, the time-domain resources (such as OFDM symbols) occupied by the first synchronization signal are different from the time-domain resources occupied by the first part of the PBCH. For example, the time-domain resources occupied by the first synchronization signal do not overlap with the time-domain resources occupied by the first part of the PBCH. Another example is that the time-domain resources occupied by the first synchronization signal partially overlap with the time-domain resources occupied by the first part of the PBCH.

[0148] In some embodiments, the time-domain resources occupied by the first portion of the PBCH may include some or all of the time-domain resources occupied by the first synchronization signal. For example, the time-domain resources occupied by the first portion of the PBCH may include all the time-domain resources occupied by the first synchronization signal. As another example, the time-domain resources occupied by the first portion of the PBCH may include a portion of the time-domain resources occupied by the first synchronization signal.

[0149] In some embodiments, the time-domain resources occupied by the first synchronization signal are different from the time-domain resources occupied by the first portion of the PBCH, and the time-domain resources occupied by the first portion of the PBCH include some or all of the time-domain resources occupied by the first synchronization signal. For example, the time-domain resources occupied by the first synchronization signal overlap with the time-domain resources occupied by the first portion of the PBCH, and the time-domain resources occupied by the first portion of the PBCH include all the time-domain resources occupied by the first synchronization signal. As another example, the time-domain resources occupied by the first synchronization signal partially overlap with the time-domain resources occupied by the first portion of the PBCH, and the time-domain resources occupied by the first portion of the PBCH include a portion of the time-domain resources occupied by the first synchronization signal.

[0150] In some embodiments, the second synchronization signal can be used together with the first synchronization signal for synchronization of the terminal device. Therefore, in some embodiments, the second synchronization signal can also be understood as, or referred to as, an extended synchronization signal.

[0151] In some embodiments, the second synchronization signal may include a synchronization signal (or a single synchronization signal), which the terminal device can use to synchronize with the first synchronization signal. This application does not limit the type of synchronization signal included in the second synchronization signal. For example, without distinguishing between PSS and SSS, the second synchronization signal may include one synchronization signal. As another example, when distinguishing between PSS and SSS, the second synchronization signal may include one of PSS and SSS.

[0152] In some embodiments, the second synchronization signal may include multiple synchronization signals (or more synchronization signals). For example, the second synchronization signal may include PSS and SSS.

[0153] In some embodiments, the second synchronization signal can be transmitted on the time-domain resources (such as OFDM symbols) occupied by the first synchronization signal. For example, the second synchronization signal can be transmitted on all the time-domain resources occupied by the first synchronization signal. As another example, the second synchronization signal can be transmitted on a portion of the time-domain resources occupied by the first synchronization signal.

[0154] In some embodiments, the PSS and / or SSS included in the first synchronization signal can be understood as or referred to as the basic PSS and / or basic SSS. In some embodiments, the PSS and / or SSS included in the second synchronization signal can be understood as or referred to as the extended PSS and / or extended SSS.

[0155] In some embodiments, the second synchronization sequence and the first synchronization sequence can be constructed using the same synchronization sequence. Having the second synchronization sequence and the first synchronization sequence use the same sequence is beneficial for improving the downlink synchronization performance of terminal devices receiving SSBs located within the first bandwidth.

[0156] In some embodiments, when the second synchronization sequence and the first synchronization sequence are constructed using the same synchronization sequence, the terminal device receiving the SSB located within the second bandwidth can complete synchronization independently based on the first synchronization sequence.

[0157] In some embodiments, the second synchronization sequence and the first synchronization sequence can be composed of different synchronization sequences.

[0158] In some embodiments, when the second synchronization sequence and the first synchronization sequence are composed of different synchronization sequences, the terminal device receiving the SSB located within the second bandwidth can complete synchronization independently based on the first synchronization sequence.

[0159] In some embodiments, the time-domain resources occupied by an SSB located in the second bandwidth are the same as those occupied by an SSB located in the first bandwidth. For example, the location and / or size of the time-domain resources occupied by an SSB located in the second bandwidth are the same as those occupied by an SSB located in the first bandwidth.

[0160] This application does not limit the size of the time-domain resources occupied by SSBs located in the first bandwidth and / or SSBs located in the second bandwidth. For example, an SSB located in the first bandwidth and / or an SSB located in the second bandwidth may occupy 2 OFDM symbols. As another example, an SSB located in the first bandwidth and / or an SSB located in the second bandwidth may occupy 4 OFDM symbols.

[0161] Taking the SSB located within the second bandwidth as occupying 2 OFDM symbols as an example, the first synchronization signal can occupy the first OFDM symbol, and the first part of the PBCH can occupy the second OFDM symbol.

[0162] Taking the SSB located within the first bandwidth as occupying 2 OFDM symbols as an example, the first synchronization signal can occupy the first OFDM symbol, and the first part of the PBCH and the second part of the PBCH can occupy the second OFDM symbol; or, the first synchronization signal can occupy the first OFDM symbol, the first part of the PBCH can occupy the second OFDM symbol, and the second part of the PBCH can occupy the first and second OFDM symbols.

[0163] Taking the SSB located within the second bandwidth and occupying 4 OFDM symbols as an example, the first synchronization signal can occupy the 1st and 3rd OFDM symbols, and the first part of the PBCH can occupy the 2nd and 4th OFDM symbols. For example, if the first synchronization signal occupies the 1st and 3rd OFDM symbols, and if the first synchronization signal includes PSS and SSS, PSS and SSS can each occupy one of the 1st and 3rd OFDM symbols respectively; for example, PSS occupies the 1st OFDM symbol, and SSS occupies the 3rd OFDM symbol.

[0164] Taking an SSB located within the second bandwidth occupying 4 OFDM symbols as an example, the first synchronization signal can occupy the 1st and 2nd OFDM symbols, and the first part of the PBCH can occupy the 3rd and 4th OFDM symbols. For example, if the first synchronization signal does not distinguish between PSS and SSS, in this case, the first synchronization signal can occupy the 1st and 2nd OFDM symbols, and the first part of the PBCH can occupy the 3rd and 4th OFDM symbols.

[0165] Taking the SSB located within the first bandwidth and occupying 4 OFDM symbols as an example, the first synchronization signal can occupy the 1st and 3rd OFDM symbols, and the first part and the second part of the PBCH can occupy the 2nd and 4th OFDM symbols; or, the first synchronization signal can occupy the 1st and 3rd OFDM symbols, the first part of the PBCH can occupy the 2nd and 4th OFDM symbols, and the second part of the PBCH can occupy the 2nd to 4th OFDM symbols; or, the first synchronization signal can occupy the 1st and 3rd OFDM symbols, the first part of the PBCH can occupy the 2nd and 4th OFDM symbols, and the second part of the PBCH can occupy the 1st to 4th OFDM symbols.

[0166] In some embodiments, if the SSB located within the first bandwidth includes a second synchronization signal, the second synchronization signal may occupy the same time-domain resources as the first synchronization signal, or the second synchronization signal may occupy a portion of the time-domain resources of the first synchronization signal. For example, if the first synchronization signal can occupy the first and third OFDM symbols, the second synchronization signal can occupy the first and third OFDM symbols, or the second synchronization signal can occupy the first OFDM symbol, or the second synchronization signal can occupy the third OFDM symbol.

[0167] In some embodiments, the first synchronization signal and the first portion of the PBCH are arranged adjacent to each other in the time domain. For example, the first synchronization signal occupies the first OFDM symbol, and the first portion of the PBCH occupies the second OFDM symbol. As another example, the first synchronization signal occupies the first and second OFDM symbols, and the first portion of the PBCH occupies the third and fourth OFDM symbols.

[0168] In some embodiments, the first synchronization signal and the first part of the PBCH are time-separated. For example, the first synchronization signal occupies the first and third OFDM symbols, and the first part of the PBCH occupies the second and fourth OFDM symbols. Taking the first synchronization signal including PSS and SSS as an example, PSS occupies the first OFDM symbol, SSS occupies the third OFDM symbol, and the first part of the PBCH occupies the second and fourth OFDM symbols.

[0169] For ease of understanding, the structure of the SSB in the embodiments of this application will be described exemplarily below with reference to Figures 5 to 16. It should be noted that in Figures 5 to 16, the first bandwidth is represented by W1 and the second bandwidth is represented by W2.

[0170] Figure 5 is a schematic diagram of the SSB structure provided in another embodiment of this application. The SSB shown in Figure 5 includes a first synchronization signal, a first portion of the PBCH, and a second portion of the PBCH. As shown in Figure 5, the first synchronization signal and the PBCH (including the first and second portions of the PBCH) are located on different time-domain resources; for example, the first synchronization signal and the PBCH are located on different OFDM symbols. The bandwidth of the first synchronization signal is W2, and the bandwidth of the PBCH is W1 (wherein, the bandwidth of the first portion of the PBCH is W2). In the example of Figure 5, the portion of the PBCH within W2 is called the first portion of the PBCH (i.e., the basic PBCH), carrying the most basic MIB information. The portion of the PBCH outside W2 but within W1 is called the second portion of the PBCH (i.e., the extended PBCH), carrying additional MIB information.

[0171] In this way, terminal devices with weaker bandwidth can receive only the SSB located in W2 (including the first synchronization signal and the first part of the PBCH) to complete a simple cell search; while terminal devices with stronger bandwidth can receive the SSB located in W1 (including the first synchronization signal, the first part of the PBCH, and the second part of the PBCH) to complete a cell search with better performance and higher resource efficiency. The second part of the PBCH can carry additional system information (such as additional MIB information) not included in the first part of the PBCH. In this way, during the initial access process, network devices can obtain more flexible resource scheduling through the second part of the PBCH. For example, before the radio resource control (RRC) connection is established, network devices can schedule multiple first subcarrier intervals, configure PDCCH transmission resources for scheduling system information at multiple candidate locations, and configure the initial BWP at multiple candidate locations, thereby facilitating better initial access performance and higher spectral efficiency.

[0172] Figure 6 is a schematic diagram of the structure of an SSB provided in another embodiment of this application. The SSB shown in Figure 6 includes a first synchronization signal, a first part of a PBCH, and a second part of a PBCH. As shown in Figure 6, the first synchronization signal and the first part of the PBCH are located on different time-domain resources; for example, the first synchronization signal and the first part of the PBCH are located on different OFDM symbols. The second part of the PBCH is transmitted on all the time-domain resources occupied by the first part of the PBCH and the first synchronization signal. The bandwidth of the first synchronization signal is W2, and the bandwidth of the PBCH is W1 (wherein, the bandwidth of the first part of the PBCH is W2).

[0173] Compared to the SSB structure shown in Figure 5, the SSB shown in Figure 6 can also use the resources located outside W2 and inside W1 in the time domain resources (such as OFDM symbols) where the first synchronization signal is located to transmit the second part of the PBCH, thereby expanding the time-frequency resources for transmitting the second part of the PBCH. This provides more system information for terminal equipment receiving the SSB located in W1, enabling more flexible resource scheduling during the initial access process, achieving better initial access performance and higher spectral efficiency.

[0174] Figure 7 is a schematic diagram of the structure of an SSB provided in another embodiment of this application. The SSB shown in Figure 7 includes a first synchronization signal, a second synchronization signal, a first part of a PBCH, and a second part of a PBCH. As shown in Figure 7, the first synchronization signal (or the second synchronization signal) and the PBCH (including the first part and the second part of the PBCH) are located on different time-domain resources. The bandwidth of the first synchronization signal is W2. The second synchronization signal is located within W1 and outside W2, and the second synchronization signal occupies the same time-domain resources as the first synchronization signal. The bandwidth of the first part of the PBCH is W2. The second part of the PBCH is located within W1 and outside W2, and the second part of the PBCH occupies the same time-domain resources as the first part of the PBCH.

[0175] Compared to the SSB structure shown in Figure 5, the SSB shown in Figure 7 utilizes resources located outside W2 and within W1 in the time domain resources (such as OFDM symbols) where the first synchronization signal resides, allowing the transmission of the second synchronization signal. In this way, a terminal device receiving an SSB located within W2 can complete cell search using the first synchronization signal within W2, achieving basic downlink synchronization performance; while a terminal device receiving an SSB located within W1 can complete cell search using both the first and second synchronization signals, achieving better downlink synchronization performance.

[0176] Figure 8 is a schematic diagram of the structure of an SSB provided in another embodiment of this application. The SSB shown in Figure 8 includes a first synchronization signal, a first part of a PBCH, and a second part of a PBCH. As shown in Figure 8, on the time-domain resources where the first synchronization signal block is located, a portion of the frequency-domain resources within W2 are used to transmit the first synchronization signal, and another portion is used to transmit the first part of the PBCH. That is, the bandwidth of the first synchronization signal is less than W2. The bandwidth of the PBCH is W1 (wherein, the bandwidth of the first part of the PBCH is W2). The time-domain resources occupied by the second part of the PBCH do not overlap with the time-domain resources occupied by the first synchronization signal, and the second part of the PBCH is transmitted on the portion of the time-domain resources occupied by the first part of the PBCH.

[0177] Compared to the SSB structure shown in Figure 5, the SSB structure shown in Figure 8 allocates part of the frequency domain resources within W2, where the first synchronization signal resides, to transmit the first synchronization signal, and another part to transmit the first part of the PBCH. The SSB structure shown in Figure 8 can expand the capacity of the first part of the PBCH, thereby improving the initial access performance of terminal devices receiving SSBs located within W2.

[0178] Figure 9 is a schematic diagram of the structure of an SSB provided in another embodiment of this application. The SSB shown in Figure 9 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH. As shown in Figure 9, on the time-domain resources where the first synchronization signal block is located, a portion of the frequency-domain resources within W2 are used to transmit the first synchronization signal, and another portion is used to transmit the first part of the PBCH. That is, the bandwidth of the first synchronization signal is less than W2. The bandwidth of the PBCH is W1 (wherein, the bandwidth of the first part of the PBCH is W2). The second part of the PBCH is transmitted on all the time-domain resources occupied by the first part of the PBCH and the first synchronization signal.

[0179] Compared to the SSB structure shown in Figure 8, the second part of the PBCH can also be transmitted on the time domain resources where the first synchronization signal is located and on the frequency domain resources outside W2, carrying additional system information. This expands the time and frequency resources of the second part of the PBCH, which is beneficial for providing more system information to terminal equipment receiving the SSB located in W1, achieving better initial access performance and higher spectral efficiency.

[0180] Compared to the SSB structure shown in Figure 5, the SSB structure shown in Figure 9 can expand the capacity of the first part of the PBCH, thereby improving the initial access performance of terminal equipment receiving SSBs located in W2. Terminal equipment receiving SSBs located in W1 can perform cell searches with better performance and higher resource efficiency.

[0181] Figure 10 is a schematic diagram of the structure of an SSB provided in another embodiment of this application. The SSB shown in Figure 10 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH, wherein the first synchronization signal includes a PSS and an SSS. As shown in Figure 10, the PSS, SSS, and PBCH (including the first part and the second part of the PBCH) are located on different time-domain resources (such as different OFDM symbols). The bandwidth of the PSS and SSS is W2, and the bandwidth of the PBCH is W1 (wherein, the bandwidth of the first part of the PBCH is W2). In the SSB shown in Figure 10, the portion of the PBCH within W2 is called the first part of the PBCH (i.e., the basic PBCH), which carries the main system information; the portion of the PBCH outside W2 but within W1 is called the second part of the PBCH (i.e., the extended PBCH), which carries additional system information.

[0182] In this way, terminal devices with limited bandwidth can perform simple cell searches by receiving only the SSBs (including PSS, SSS, and the first part of PBCH) within W2; terminal devices with greater bandwidth can perform better-performing and more resource-efficient cell searches by receiving the SSBs (including PSS, SSS, the first part of PBCH, and the second part of PBCH) within W1. This is because the second part of PBCH contains system information not included in the first part of PBCH, allowing for more flexible resource scheduling during initial access, thus facilitating better initial access performance and higher spectrum efficiency.

[0183] Figure 11 is a schematic diagram of the SSB structure provided in another embodiment of this application. The SSB shown in Figure 11 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH. The first synchronization signal includes a PSS and an SSS. As shown in Figure 11, the PSS, SSS, and the first part of the PBCH are located on different time-domain resources. The second part of the PBCH is transmitted on the time-domain resources occupied by the first part of the PBCH and the SSS. The bandwidth of the PSS and SSS is W2, and the bandwidth of the PBCH is W1 (wherein, the bandwidth of the first part of the PBCH is W2).

[0184] Compared to the SSB structure shown in Figure 10, in the SSB structure shown in Figure 12, the resources located outside W2 and inside W1 in the time domain resources (such as OFDM symbols) where the SSS is located can also be used to transmit the second part of the PBCH. This expands the time-frequency resources of the second part of the PBCH, allowing terminal devices receiving SSBs located within W1 to transmit more system information. This is beneficial for obtaining more flexible resource scheduling during the initial access process, achieving better initial access performance and higher spectrum efficiency.

[0185] Figure 12 is a schematic diagram of the SSB structure provided in another embodiment of this application. The SSB shown in Figure 12 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH. The first synchronization signal includes a PSS and an SSS. As shown in Figure 12, the PSS, SSS, and the first part of the PBCH are located on different time-domain resources. The second part of the PBCH is transmitted on the time-domain resources occupied by the first part of the PBCH, the PSS, and the SSS. The bandwidth of the PSS and SSS is W2, and the bandwidth of the PBCH is W1 (wherein, the bandwidth of the first part of the PBCH is W2).

[0186] Compared to the SSB structure shown in Figure 11, in the SSB structure shown in Figure 12, the resources located outside W2 and inside W1 in the time domain resources (such as OFDM symbols) where PSS and SSS are located can be used to transmit the second part of PBCH. This can further expand the time-frequency resources of the second part of PBCH, allowing terminal equipment receiving SSB located within W1 to transmit more system information. This is beneficial for obtaining more flexible resource scheduling during the initial access process, achieving better initial access performance and higher spectrum efficiency.

[0187] Figure 13 is a schematic diagram of the structure of an SSB provided in another embodiment of this application. The SSB shown in Figure 13 includes a first synchronization signal, a second synchronization signal, a first part of a PBCH, and a second part of a PBCH. Both the first and second synchronization signals include a PSS and an SSS. As shown in Figure 13, the PSS, SSS, and first part of the PBCH in the first synchronization signal are located on different time-domain resources. The PSS in the second synchronization signal can be transmitted on the time-domain resource where the PSS in the first synchronization signal is located, and on a frequency-domain resource located outside of W2. The SSS in the second synchronization signal can be transmitted on the time-domain resource where the SSS in the first synchronization signal is located, and on a frequency-domain resource located outside of W2. The second part of the PBCH can be transmitted on the time-domain resource where the first part of the PBCH is located, and on a frequency-domain resource located outside of W2.

[0188] Compared to the SSB structure shown in Figure 10, in the SSB structure shown in Figure 13, the resources located outside W2 and within W1 in the time domain of the PSS and SSS in the first synchronization signal can also be used to transmit the PSS and SSS in the second synchronization signal. In this way, terminal devices with weaker bandwidth can complete cell search using only the first synchronization signal within W2, achieving basic downlink synchronization performance; terminal devices with stronger bandwidth can complete cell search using both the first and second synchronization signals, achieving better downlink synchronization performance.

[0189] It should be noted that in the example of Figure 13, the second synchronization signal may also include only PSS or SSS, and this embodiment of the application is not limited to this.

[0190] Figure 14 is a schematic diagram of the SSB structure provided in another embodiment of this application. The SSB shown in Figure 14 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH. The first synchronization signal includes a PSS and an SSS. As shown in Figure 14, within the time domain resources where the PSS is located, a portion of the frequency domain resources within W2 is used to transmit the PSS (i.e., the bandwidth of the PSS is less than W2). Within the time domain resources where the SSS is located, a portion of the frequency domain resources within W2 is used to transmit the SSS, and another portion is used to transmit the first part of the PBCH. The second part of the PBCH is transmitted on the time domain resources occupied by the first part of the PBCH and the SSS.

[0191] Compared to the SSB structure shown in Figure 10, in the SSB structure shown in Figure 14, a portion of the frequency domain resources within W2 of the time domain resources (such as OFDM symbols) where the SSS resides are used for transmitting the SSS, and another portion is used for transmitting the first part of the PBCH. In the time domain resources where the SSS and the first part of the PBCH reside, the frequency domain resources outside W2 but within W1 are used for transmitting the second part of the PBCH. Compared to the SSB structure shown in Figure 10, the SSB structure shown in Figure 14 can expand the capacity of the first part of the PBCH, thereby improving the initial access performance of terminal equipment receiving the SSB located within W2.

[0192] Figure 15 is a schematic diagram of the SSB structure provided in another embodiment of this application. The SSB shown in Figure 15 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH. The first synchronization signal includes a PSS and an SSS. As shown in Figure 15, within the time domain resources where the PSS is located, a portion of the frequency domain resources within W2 is used to transmit the PSS, and another portion is used to transmit the first part of the PBCH. Within the time domain resources where the SSS is located, a portion of the frequency domain resources within W2 is used to transmit the SSS, and another portion is used to transmit the first part of the PBCH. The second part of the PBCH is transmitted on the time domain resources occupied by the first part of the PBCH and the SSS.

[0193] Compared to the SSB structure shown in Figure 14, in the SSB structure shown in Figure 15, a portion of the time-domain resources located within W2 where the PSS is located can be used to transmit the first part of the PBCH, carrying more system information. This can further expand the capacity of the first part of the PBCH, which is beneficial to improving the initial access performance of terminal devices receiving SSBs located within W2.

[0194] Figure 16 is a schematic diagram of the SSB structure provided in another embodiment of this application. The SSB shown in Figure 16 includes a first synchronization signal, a first part of the PBCH, and a second part of the PBCH. The first synchronization signal includes a PSS and an SSS. As shown in Figure 16, within the time-domain resources where the PSS is located, a portion of the frequency-domain resources within W2 is used to transmit the PSS, and another portion is used to transmit the first part of the PBCH. Within the time-domain resources where the SSS is located, a portion of the frequency-domain resources within W2 is used to transmit the SSS, and another portion is used to transmit the first part of the PBCH. The second part of the PBCH is transmitted on the time-domain resources occupied by the first part of the PBCH, the PSS, and the SSS.

[0195] Compared to the SSB structure shown in Figure 15, the SSB structure shown in Figure 16 allows the transmission of the second part of the PBCH on the time-domain resources where the PSS and SSS reside, and on resources outside of W2. This further expands the time-frequency resources of the second part of the PBCH, enabling the terminal equipment receiving the SSB within the first bandwidth to transmit more system information. This results in more flexible resource scheduling during the initial access process, achieving better initial access performance and higher spectral efficiency.

[0196] It should be noted that in the SSB structures illustrated in Figures 5 to 16, the second bandwidth is located within the first bandwidth. However, the embodiments of this application are not limited to this. The second bandwidth and the first bandwidth may be two separate bandwidths, and the positions and / or sizes of these two bandwidths may differ. For example, the second bandwidth may be located outside the first bandwidth. Or, for another example, the second bandwidth may be located outside the first bandwidth, and the size of the second bandwidth may be smaller than the size of the first bandwidth.

[0197] The structure of the SSB has been introduced above. The following section describes the process of the method in this application.

[0198] Figure 17 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 17 is described from the perspective of interaction between a terminal device and a network device, which can be, for example, the terminal device 120 and the network device 110 shown in Figure 1, respectively. The method shown in Figure 17 may include step S1710, which will be described below.

[0199] In step S1710, the network device sends an SSB to the terminal device. Correspondingly, the terminal device receives all or part of the information in the SSB. In other words, the terminal device receives an SSB located within a first bandwidth or an SSB located within a second bandwidth.

[0200] For information on the structure of SSBs sent from network devices to terminal devices, SSBs located in the first bandwidth, and SSBs located in the second bandwidth, please refer to the above text, which will not be repeated here.

[0201] In some embodiments, the terminal device receiving an SSB located within the first bandwidth can also be understood as: the terminal device receiving an SSB of the full bandwidth, or the terminal device receiving the entire SSB, or the terminal device receiving all the information in the SSB.

[0202] In some embodiments, the terminal device receiving an SSB located within the second bandwidth can also be understood as: the terminal device receiving an SSB of the basic bandwidth or the terminal device receiving a portion of the information in the SSB.

[0203] In some embodiments, the terminal device can determine whether to receive an SSB located within a first bandwidth or within a second bandwidth based on its bandwidth capability. As one implementation, if the terminal device's bandwidth capability is higher than or equal to the first bandwidth capability, the terminal device can receive an SSB located within the first bandwidth; and / or, if the terminal device's bandwidth capability is lower than the first bandwidth capability, the terminal device can receive an SSB located within the second bandwidth. That is, a terminal device with stronger bandwidth capability can receive an SSB located within the first bandwidth to access the network, while a terminal device with weaker bandwidth capability can receive an SSB located within the second bandwidth to access the network.

[0204] This application does not limit the configuration method of the first bandwidth capability in its embodiments. In some embodiments, the first bandwidth capability may be predefined or preconfigured. In some embodiments, the first bandwidth capability may be configured by the network device.

[0205] The embodiments of this application do not limit the size of the first bandwidth capability. For example, the size of the first bandwidth capability can be 20 PRBs. Or, for example, the size of the first bandwidth capability can be 24 PRBs, etc.

[0206] In this embodiment, the SSB located within the second bandwidth (or, within the second bandwidth of the SSB) includes a first synchronization signal and a first part of the PBCH. Terminal devices with weak bandwidth capabilities (such as low-end IoT devices) can complete a simple cell search simply by receiving the SSB located within the second bandwidth. Terminal devices with strong bandwidth capabilities (such as eMBB terminal devices) can complete a more efficient and resource-saving cell search by receiving the SSB located within the first bandwidth (including the first synchronization signal, the first part of the PBCH, and the second part of the PBCH). In this way, the communication system can use a single SSB to support initial access for terminal devices with different bandwidth capabilities, which is beneficial for effectively supporting various wireless services and improving the spectrum efficiency of initial access.

[0207] In some embodiments, if the terminal device receives an SSB located within the first bandwidth, i.e., the terminal device receives all the information of the SSB, the terminal device can determine the first resource configuration based on the SSB located within the first bandwidth. In other words, the terminal device can determine the first resource configuration based on the information carried in the second part of the PBCH. If the terminal device receives an SSB located within the second bandwidth, i.e., the terminal device receives only part of the SSB information, the terminal device can determine the first resource configuration based on predefined parameters.

[0208] Figure 18 shows an example of a terminal device receiving an SSB. As shown in Figure 18, terminal devices with different bandwidth capabilities can access SSBs with different bandwidths. For example, a terminal device with a stronger bandwidth capability can access an SSB with a first bandwidth (i.e., receiving the PSS, SSS, the first part of the PBCH, and the second part of the PBCH) to complete cell search; while a terminal device with a weaker bandwidth capability can access an SSB with a second bandwidth (i.e., receiving the PSS, SSS, and the first part of the PBCH) to complete cell search.

[0209] It should be noted that Figure 18 is based on the SSB structure shown in Figure 11 as an example, but the steps in Figures 17 and 18 can be applied to any SSB structure mentioned above, and other examples will not be listed.

[0210] It should also be noted that in some embodiments, the network device can send two SSBs with different bandwidths to the terminal device; that is, the network device can send an SSB with a first bandwidth or an SSB with a second bandwidth to the terminal device. For example, the network device can send two independent SSBs with different bandwidths to the terminal device, wherein one SSB has the first bandwidth and the other SSB has the second bandwidth.

[0211] In some embodiments, the size of the first bandwidth may be greater than the size of the second bandwidth.

[0212] In some embodiments, when the network device can send two different bandwidth SSBs to the terminal device, the bandwidth of the SSB received by the terminal device with weaker bandwidth capability can be smaller than that received by the terminal device with stronger bandwidth capability. For example, if the network device sends two different bandwidth SSBs to the terminal device, one with a bandwidth of 20 PRBs and the other with a bandwidth of 12 PRBs, the terminal device with weaker bandwidth capability can receive the 12 PRB SSB, while the terminal device with stronger bandwidth capability can receive the 20 PRB SSB.

[0213] In some embodiments, where the network device can send two SSBs of different bandwidths to the terminal device, the information carried by these two SSBs is at least partially the same. Taking a first bandwidth SSB and a second bandwidth SSB as examples, the information carried by the first bandwidth SSB is at least partially the same as the information carried by the second bandwidth SSB. For example, the information carried by the second bandwidth SSB is entirely included in the information carried by the first bandwidth SSB, and the first bandwidth SSB carries information not carried by the second bandwidth SSB. As an example, the second bandwidth SSB can carry a first synchronization signal and a first part of the PBCH, while the first bandwidth SSB can carry the first synchronization signal, a first part of the PBCH, and a second part of the PBCH. As another example, the second bandwidth SSB can carry the first synchronization signal and a first part of the PBCH, while the first bandwidth SSB can carry the first synchronization signal, a first part of the PBCH, a second part of the PBCH, and a second synchronization signal. For a description of the first synchronization signal, the first part of the PBCH, the second part of the PBCH, and the second synchronization signal, please refer to the above text; it will not be repeated here.

[0214] Taking two SSBs with different bandwidths, one with a size of 20 PRBs and the other with a size of 12 PRBs, as examples, the information carried by the 12 PRB SSB is at least partially the same as the information carried by the 20 PRB SSB. For example, the information carried by the 20 PRB SSB includes all the information carried by the 12 PRB SSB, and also includes information not carried by the 12 PRB SSB.

[0215] For ease of understanding, the SSB structure shown in Figure 11 is used as an example to describe the process of the method in this application in more detail below. The examples below are not intended to limit the embodiments of this application. It should be noted that any of the SSB structures mentioned above are applicable to the process of the method in this application, and the processes corresponding to other SSB structures will not be described again. It should also be noted that the examples below can be used alone or in combination. For example, the location of the PDCCH transmission resource used for scheduling system information, the location of the initial BWP, or the first subcarrier interval can be determined separately according to the examples below. As another example, multiple of the locations of the PDCCH transmission resource used for scheduling system information, the location of the initial BWP, and the first subcarrier interval can be determined jointly according to the examples below.

[0216] As shown in Figure 19, terminal devices with different bandwidth capabilities can access SSBs with different bandwidths. For example, a terminal device with a stronger bandwidth capability can access an SSB with a first bandwidth (i.e., receiving the PSS, SSS, the first part of the PBCH, and the second part of the PBCH) to complete cell search. A terminal device with a weaker bandwidth capability can access an SSB with a second bandwidth (i.e., receiving the PSS, SSS, and the first part of the PBCH) to complete cell search.

[0217] In some embodiments, after a terminal device with strong bandwidth accesses an SSB with a first bandwidth, it can obtain the location information of the PDCCH transmission resource (such as CORESET 0) used for scheduling system information from the information carried in the second part of the PBCH. This PDCCH transmission resource for scheduling system information includes a PDCCH search space for scheduling system information (such as a PDCCH common search space of type 0). The terminal device can search for the DCI that schedules the PDSCH containing system information in this PDCCH search space to complete the reception of the system information.

[0218] For example, the information carried in the second part of the PBCH can indicate the location information of PDCCH transmission resources (such as CORESET 0) used for scheduling system information. For instance, the location information of the PDCCH transmission resources used for scheduling system information indicated by the second part of the PBCH is determined from one or more candidate PDCCH transmission resource locations. These one or more candidate PDCCH transmission resource locations can be seen, for example, as candidate locations 0 to 3 of CORESET 0 shown in Figure 19. Here, candidate location 0 of CORESET 0 is the location of CORESET 0 time-division multiplexed with SSB, candidate locations 1 and 2 of CORESET 0 are the locations of CORESET 0 frequency-division multiplexed with SSB, and candidate location 3 of CORESET 0 is the location of CORESET 0 time-division multiplexed and frequency-division multiplexed with SSB. In the example of Figure 19, the information carried in the second part of the PBCH indicates that the location of CORESET 0 is candidate location 3, that is, the location of CORESET 0 time-division multiplexed and frequency-division multiplexed with SSB. In this way, terminal devices with strong bandwidth can determine that CORESET 0 is located at candidate position 3 after reading the information carried in the second part of PBCH.

[0219] In some embodiments, the information carried in the second part of the PBCH may also indicate the size information of the PDCCH transmission resources (such as CORESET 0) used for scheduling system information. For example, the information carried in the second part of the PBCH may indicate one or more of the frequency domain bandwidth (such as a first bandwidth or a second bandwidth) and time domain length (such as the number of symbols) of CORESET 0. As an example, the information carried in the second part of the PBCH may indicate the frequency domain bandwidth of CORESET 0. As another example, the information carried in the second part of the PBCH may indicate the time domain length of CORESET 0. As yet another example, the information carried in the second part of the PBCH may indicate both the frequency domain bandwidth and the time domain length of CORESET 0.

[0220] In some embodiments, if the information carried by the second part of the PBCH does not indicate the time-domain length of CORESET 0, the time-domain length of CORESET 0 may be predefined (e.g., predefined as N OFDM symbols).

[0221] In some embodiments, if the information carried by the second part of the PBCH does not indicate the frequency domain bandwidth of CORESET 0, the frequency domain bandwidth of CORESET 0 may be predefined (e.g., predefined as a first bandwidth or a second bandwidth).

[0222] In some embodiments, if the information carried by the second part of the PBCH does not indicate the time-domain length and frequency-domain bandwidth of CORESET 0, then the time-domain length and frequency-domain bandwidth of CORESET 0 may be predefined.

[0223] In some embodiments, a terminal device with limited bandwidth does not receive the second part of the PBCH after accessing an SSB with a second bandwidth. In this case, the terminal device can determine the location of the PDCCH transmission resource (such as CORESET 0) used for scheduling system information based on predefined parameters. As shown in Figure 19, for a terminal device with limited bandwidth, CORESET 0 is always time-division multiplexed with the SSB, with a frequency domain width of the second bandwidth and a time domain length of M symbols.

[0224] As shown in Figure 20, terminal devices with different bandwidth capabilities can access SSBs with different bandwidths. For example, a terminal device with a stronger bandwidth capability can access an SSB with a first bandwidth (i.e., receiving the PSS, SSS, the first part of the PBCH, and the second part of the PBCH) to complete cell search. A terminal device with a weaker bandwidth capability can access an SSB with a second bandwidth (i.e., receiving the PSS, SSS, and the first part of the PBCH) to complete cell search.

[0225] In some embodiments, after a terminal device with strong bandwidth accesses an SSB with a first bandwidth, it can obtain the location information of the initial BWP from the information carried in the second part of the PBCH.

[0226] For example, the information carried in the second part of the PBCH can indicate the location information of the initial BWP. For instance, the location information of the initial BWP indicated by the second part of the PBCH is determined from one or more candidate initial BWP locations. These one or more candidate initial BWP locations can be seen, for example, as candidate locations 0 to 2 of the initial BWP shown in Figure 20. Candidate location 0 is an initial BWP location with the same bandwidth and position as the SSB, while candidate locations 1 and 2 are initial BWP locations adjacent to the SSB location. In the example of Figure 20, the information carried in the second part of the PBCH indicates that the initial BWP location is candidate location 2, i.e., a high-frequency location adjacent to the SSB. In this way, a terminal device with strong bandwidth capability can determine that the initial BWP is located at candidate location 2 after reading the information carried in the second part of the PBCH.

[0227] In some embodiments, the information carried by the second part of the PBCH may also indicate the size information of the initial BWP (such as the first bandwidth or the second bandwidth).

[0228] In some embodiments, if the information carried by the second part of the PBCH does not indicate the size information of the initial BWP, the size information of the initial BWP may be predefined (e.g., predefined as the first bandwidth or predefined as the second bandwidth).

[0229] In some embodiments, a terminal device with limited bandwidth does not receive the second part of the PBCH after accessing an SSB with a second bandwidth. In this case, the terminal device can determine the position of the initial BWP based on predefined parameters. As shown in Figure 20, for a terminal device with limited bandwidth, the initial BWP is always the same size and position as the SSB, with a frequency domain width of the second bandwidth.

[0230] As shown in Figure 21, terminal devices with different bandwidth capabilities can access SSBs with different bandwidths. For example, a terminal device with a stronger bandwidth capability can access an SSB with a first bandwidth (i.e., receiving the PSS, SSS, the first part of the PBCH, and the second part of the PBCH) to complete cell search. A terminal device with a weaker bandwidth capability can access an SSB with a second bandwidth (i.e., receiving the PSS, SSS, and the first part of the PBCH) to complete cell search.

[0231] In some embodiments, after a terminal device with strong bandwidth accesses an SSB with a first bandwidth, it can obtain information about the first subcarrier spacing from the information carried in the second part of the PBCH.

[0232] For example, the information carried in the second part of the PBCH can indicate information about the first subcarrier interval. For instance, the first subcarrier interval indicated by the second part of the PBCH is determined from one or more candidate subcarrier intervals. These one or more candidate subcarrier intervals can be seen, for example, as candidate subcarrier intervals 0 to 2 shown in Figure 21. Candidate subcarrier interval 0 is equal to 15 kHz, candidate subcarrier interval 1 is equal to 30 kHz, and candidate subcarrier interval 2 is equal to 60 kHz. In the example of Figure 21, the information carried in the second part of the PBCH indicates that the initial BWP position is candidate subcarrier interval 1, i.e., the first subcarrier interval is equal to 30 kHz. In this way, a terminal device with strong bandwidth capability can determine that the first subcarrier interval is equal to 30 kHz after reading the information carried in the second part of the PBCH.

[0233] In some embodiments, a terminal device with strong bandwidth capability may determine one or more of the following based on the first subcarrier spacing indicated by the second part of the PBCH: the location of the PDCCH transmission resources for scheduling system information, the location of the initial BWP, and the resource allocation unit.

[0234] In some embodiments, a terminal device with limited bandwidth does not receive the second part of the PBCH after accessing an SSB with a second bandwidth. In this case, the terminal device can determine the position of the initial BWP based on predefined parameters. As shown in Figure 21, for a terminal device with limited bandwidth, the first subcarrier spacing can be predefined as the subcarrier spacing of the SSB. In the example of Figure 21, the subcarrier spacing of the SSB is 15 kHz, therefore, the first subcarrier spacing can be 15 kHz.

[0235] In the above example, terminal devices with different bandwidth capabilities can read different PBCHs, i.e., obtain different MIB information. Terminal devices with weaker bandwidth capabilities can obtain only the first part of the PBCH located within the second bandwidth and determine the first resource configuration during the initial access process based on predefined parameters. This simplifies the initial access process, allowing terminal devices to complete the initial access process within a smaller bandwidth, better supporting low-bandwidth terminal devices such as low-end IoT devices, and reducing complexity and cost. Terminal devices with stronger bandwidth capabilities can obtain not only the first part of the PBCH but also the second part located outside the second bandwidth, and determine the first resource configuration during the initial access process based on the second part of the PBCH. This improves the flexibility of system resource allocation during the initial access phase, which is beneficial for increasing the capacity and spectrum efficiency of the communication system and better adapting to various types of terminal devices and service requirements.

[0236] The method embodiments of this application have been described in detail above with reference to Figures 1 to 21. The apparatus embodiments of this application will be described in detail below with reference to Figures 22 to 24. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0237] Figure 22 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. The terminal device 2200 shown in Figure 22 may include a receiving module 2210. The receiving module 2210 can be used to receive all or part of the information of the SSB, wherein the SSB is located within a first bandwidth, the part of the information is located within a second bandwidth, and the second bandwidth is located within the first bandwidth; wherein the part of the information includes a first part of the PBCH and a first synchronization signal, and the whole information includes the first part of the PBCH, the second part of the PBCH and the first synchronization signal, and the system information carried by the second part of the PBCH is different from that carried by the first part of the PBCH.

[0238] In some embodiments, the system information carried in the second part of the PBCH is used to determine a first resource configuration. If the terminal device receives the information in the second part, the first resource configuration is determined according to predefined parameters.

[0239] In some embodiments, the second portion of the PBCH is transmitted on the time-domain resources occupied by the first portion of the PBCH; or, the second portion of the PBCH is transmitted on the time-domain resources occupied by the first portion of the PBCH and the first synchronization signal.

[0240] In some embodiments, the complete information further includes a second synchronization signal, which is transmitted over the time-domain resources occupied by the first synchronization signal.

[0241] In some embodiments, the second synchronization signal and the first synchronization signal are composed of different synchronization sequences, or the second synchronization signal and the first synchronization signal are composed of the same synchronization sequence.

[0242] In some embodiments, the second synchronization signal includes one or more of the following: a primary synchronization signal and a secondary synchronization signal.

[0243] In some embodiments, the first portion of the PBCH occupies different time-domain resources than the first synchronization signal, and / or the time-domain resources occupied by the first portion of the PBCH include some or all of the time-domain resources occupied by the first synchronization signal.

[0244] In some embodiments, the first part of the PBCH includes one or more of the following information: system frame number; DMRS location information.

[0245] In some embodiments, the DMRS is used to demodulate the PDSCH of the transmission system information.

[0246] In some embodiments, the second part of the PBCH includes one or more of the following information: information on PDCCH transmission resources for scheduling system information; information on the initial BWP; and information on the first subcarrier interval.

[0247] In some embodiments, the information of the PDCCH transmission resource includes one or more of the following: location information of the PDCCH transmission resource; size information of the PDCCH transmission resource.

[0248] In some embodiments, the PDCCH transmission resources include a first control resource set, which includes a PDCCH search space for scheduling system information.

[0249] In some embodiments, the PDCCH search space includes a PDCCH public search space of type 0.

[0250] In some embodiments, the first control resource set includes PDCCH control resource set 0.

[0251] In some embodiments, the information of the initial BWP includes one or more of the following: the location information of the initial BWP; the size information of the initial BWP.

[0252] In some embodiments, the initial BWP includes the first downlink BWP activated after cell search and / or the first uplink BWP activated after cell search.

[0253] In some embodiments, the first subcarrier spacing is used for one or more of the following: transmitting system information, initial access, and random access.

[0254] In some embodiments, the first subcarrier interval is used to determine the location of the PDCCH transmission resource and / or the location of the initial BWP.

[0255] In some embodiments, the first synchronization signal includes one or more of the following: a primary synchronization signal; a secondary synchronization signal.

[0256] In some embodiments, the first part of the PBCH is jointly encoded with the second part of the PBCH, or the first part of the PBCH is independently encoded with the second part of the PBCH.

[0257] In some embodiments, the receiving module is further configured to: receive all the information if the bandwidth capability of the terminal device is higher than or equal to the first bandwidth capability; and / or receive the partial information if the bandwidth capability of the terminal device is lower than the first bandwidth capability.

[0258] In some embodiments, the receiving module 2210 may be a transceiver 2430. The terminal device 2200 may also include a processor 2410 and a memory 2420, as shown in FIG24.

[0259] Figure 23 is a schematic diagram of the network device provided in an embodiment of this application. The network device 2300 in Figure 23 may include a transmitting module 2310. The transmitting module 2310 can be used to transmit an SSB to a terminal device. The SSB is located within a first bandwidth, and the SSB includes partial information located within a second bandwidth, which is located within the first bandwidth. The partial information includes a first part of the PBCH and a first synchronization signal. The complete information of the SSB includes the first part of the PBCH, the second part of the PBCH, and the first synchronization signal. The system information carried by the second part of the PBCH is different from that carried by the first part of the PBCH.

[0260] In some embodiments, the system information carried in the second part of the PBCH is used to determine a first resource configuration. If the terminal device receives the information in the second part, the first resource configuration is determined according to predefined parameters.

[0261] In some embodiments, the second portion of the PBCH is transmitted on the time-domain resources occupied by the first portion of the PBCH; or, the second portion of the PBCH is transmitted on the time-domain resources occupied by the first portion of the PBCH and the first synchronization signal.

[0262] In some embodiments, the complete information further includes a second synchronization signal, which is transmitted over the time-domain resources occupied by the first synchronization signal.

[0263] In some embodiments, the second synchronization signal and the first synchronization signal are composed of different synchronization sequences, or the second synchronization signal and the first synchronization signal are composed of the same synchronization sequence.

[0264] In some embodiments, the second synchronization signal includes one or more of the following: a primary synchronization signal and a secondary synchronization signal.

[0265] In some embodiments, the first portion of the PBCH occupies different time-domain resources than the first synchronization signal, and / or the time-domain resources occupied by the first portion of the PBCH include some or all of the time-domain resources occupied by the first synchronization signal.

[0266] In some embodiments, the first part of the PBCH includes one or more of the following information: system frame number; DMRS location information.

[0267] In some embodiments, the DMRS is used to demodulate the Physical Downlink Shared Channel (PDSCH) for transmitting system information.

[0268] In some embodiments, the second part of the PBCH includes one or more of the following information: information on PDCCH transmission resources for scheduling system information; information on the initial BWP; and information on the first subcarrier interval.

[0269] In some embodiments, the information of the PDCCH transmission resource includes one or more of the following: location information of the PDCCH transmission resource; size information of the PDCCH transmission resource.

[0270] In some embodiments, the PDCCH transmission resources include a first control resource set, which includes a PDCCH search space for scheduling system information.

[0271] In some embodiments, the PDCCH search space includes a PDCCH public search space of type 0.

[0272] In some embodiments, the first control resource set includes PDCCH control resource set 0.

[0273] In some embodiments, the information of the initial BWP includes one or more of the following: the location information of the initial BWP; the size information of the initial BWP.

[0274] In some embodiments, the initial BWP includes the first downlink BWP activated after cell search and / or the first uplink BWP activated after cell search.

[0275] In some embodiments, the first subcarrier spacing is used for one or more of the following: transmitting system information, initial access, and random access.

[0276] In some embodiments, the first subcarrier interval is used to determine the location of the PDCCH transmission resource and / or the location of the initial BWP.

[0277] In some embodiments, the first synchronization signal includes one or more of the following: a primary synchronization signal; a secondary synchronization signal.

[0278] In some embodiments, the first part of the PBCH is jointly encoded with the second part of the PBCH, or the first part of the PBCH is independently encoded with the second part of the PBCH.

[0279] In some embodiments, all the information is used for reception by terminal devices with bandwidth capabilities greater than or equal to the first bandwidth capability; and / or some of the information is used for reception by terminal devices with bandwidth capabilities less than the first bandwidth capability.

[0280] In some embodiments, the transmitting module 2310 may be a transceiver 2430. The network device 2300 may also include a processor 2410 and a memory 2420, as shown in FIG24.

[0281] Figure 24 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 24 indicate that the unit or module is optional. This device 2400 can be used to implement the methods described in the above method embodiments. Device 2400 can be a chip, a terminal device, or a network device.

[0282] Apparatus 2400 may include one or more processors 2410. The processor 2410 may support apparatus 2400 in implementing the methods described in the preceding method embodiments. The processor 2410 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0283] The apparatus 2400 may further include one or more memories 2420. The memories 2420 store a program that can be executed by the processor 2410, causing the processor 2410 to perform the methods described in the preceding method embodiments. The memories 2420 may be independent of the processor 2410 or integrated within the processor 2410.

[0284] The device 2400 may also include a transceiver 2430. The processor 2410 can communicate with other devices or chips via the transceiver 2430. For example, the processor 2410 can send and receive data with other devices or chips via the transceiver 2430.

[0285] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0286] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0287] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in various embodiments of this application.

[0288] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0289] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0290] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0291] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0292] In the embodiments of this application, the term "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" in the embodiments of this application can be replaced with "instructing" or "used to determine". For example, "A includes B" can be replaced with "A instructs B" or "A is used to determine B".

[0293] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0294] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0295] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0296] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0297] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0298] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0299] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0300] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0301] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

A method of wireless communication, comprising: Comprising: a terminal device receives all or part of information of a synchronization signal block (SSB), the SSB is located in a first bandwidth, the part of information is located in a second bandwidth; wherein the part of information comprises a first part of a physical broadcast channel (PBCH) and a first synchronization signal, the all of information comprises the first part of the PBCH, a second part of the PBCH and the first synchronization signal, and the second part of the PBCH is different from system information carried by the first part of the PBCH. The method of claim 1, wherein The system information carried by the second part of the PBCH is used to determine a first resource configuration, and if the terminal device receives the part of information, the first resource configuration is determined according to a predefined parameter. The method according to claim 1 or 2, characterized in that: the second part of the PBCH is transmitted on time domain resources occupied by the first part of the PBCH; or the second part of the PBCH is transmitted on time domain resources occupied by the first part of the PBCH and the first synchronization signal. The method according to any one of claims 1-3, characterized in that The all of information further comprises a second synchronization signal, and the second synchronization signal is transmitted on time domain resources occupied by the first synchronization signal. The method according to claim 4, characterized in that The second synchronization signal and the first synchronization signal are constituted by different synchronization sequences, or the second synchronization signal and the first synchronization signal are constituted by the same synchronization sequence. The method according to claim 4 or 5, characterized in that The second synchronization signal comprises one or more of the following: a primary synchronization signal, a secondary synchronization signal. The method according to any one of claims 1-6, characterized in that The time domain resources occupied by the first part of the PBCH are different from the time domain resources occupied by the first synchronization signal, and / or the time domain resources occupied by the first part of the PBCH comprise part or all of the time domain resources occupied by the first synchronization signal. The method according to any one of claims 1-7, characterized in that The first part of the PBCH comprises one or more of the following information: a system frame number; position information of a demodulation reference signal (DMRS). The method of claim 8, wherein The DMRS is used to demodulate a physical downlink shared channel (PDSCH) carrying system information. The method according to any one of claims 1-9, characterized in that The second part of the PBCH comprises one or more of the following information: information of a physical downlink control channel (PDCCH) transmission resource used for scheduling system information; information of an initial bandwidth part (BWP); information of a first subcarrier spacing. The method of claim 10, wherein The information of the PDCCH transmission resource comprises one or more of the following information: position information of the PDCCH transmission resource; size information of the PDCCH transmission resource. The method according to claim 10 or 11, characterized in that The PDCCH transmission resource comprises a first control resource set, and the first control resource set comprises a PDCCH search space for scheduling system information. The method of claim 12, wherein The PDCCH search space comprises a PDCCH common search space of type 0. The method according to claim 12 or 13, characterized in that The first control resource set comprises a PDCCH control resource set 0. The method according to any one of claims 10-14, characterized in that The information of the initial BWP comprises one or more of the following information: position information of the initial BWP; size information of the initial BWP. The method according to any one of claims 10-15, characterized in that The initial BWP comprises a first downlink BWP activated after cell search and / or a first uplink BWP activated after cell search. The method according to any one of claims 10-16, characterized in that The first subcarrier spacing is used for one or more of the following: transmitting system information, initial access, random access. The method according to any one of claims 10-17, characterized in that The first subcarrier spacing is used for determining a location of the PDCCH transmission resource and / or a location of the initial BWP. The method according to any one of claims 1-18, characterized in that The first synchronization signal comprises one or more of the following: a primary synchronization signal; a secondary synchronization signal. The method according to any one of claims 1-19, characterized in that The first part of the PBCH is jointly encoded with the second part of the PBCH, or the first part of the PBCH is independently encoded from the second part of the PBCH. The method according to any one of claims 1-20, characterized in that The terminal device receives all or part of information of an SSB, including: If the bandwidth capability of the terminal device is higher than or equal to a first bandwidth capability, the terminal device receives the all information; and / or If the bandwidth capability of the terminal device is lower than the first bandwidth capability, the terminal device receives the part information. The method according to any one of claims 1-21, characterized in that The second bandwidth is located within the first bandwidth. A method of wireless communication, including: Comprising: A network device transmits a synchronization signal block (SSB) to a terminal device, the SSB being located within a first bandwidth, and the SSB comprising part information located within a second bandwidth; wherein the part information comprises a first part of a physical broadcast channel (PBCH) and a first synchronization signal, all information of the SSB comprises the first part of the PBCH, a second part of the PBCH, and the first synchronization signal, and the second part of the PBCH carries different system information from the first part of the PBCH. The method of claim 23, wherein The system information carried by the second part of the PBCH is used to determine a first resource configuration, and if the terminal device receives the part information, the first resource configuration is determined according to a predefined parameter. The method of claim 23 or 24, characterized in that: The second part of the PBCH is transmitted on time domain resources occupied by the first part of the PBCH; or The second part of the PBCH is transmitted on time domain resources occupied by the first part of the PBCH and the first synchronization signal. The method according to any one of claims 23-25, characterized in that The all information further comprises a second synchronization signal, and the second synchronization signal is transmitted on time domain resources occupied by the first synchronization signal. The method of claim 26, wherein The second synchronization signal and the first synchronization signal are constituted by different synchronization sequences, or the second synchronization signal and the first synchronization signal are constituted by the same synchronization sequence. The method according to claim 26 or 27, characterized in that The second synchronization signal comprises one or more of the following: a primary synchronization signal, a secondary synchronization signal. The method according to any one of claims 23-28, characterized in that The first part of the PBCH occupies different time domain resources from the first synchronization signal, and / or the time domain resources occupied by the first part of the PBCH include part or all of the time domain resources occupied by the first synchronization signal. The method according to any one of claims 23-29, characterized in that The first part of the PBCH comprises one or more of the following information: a system frame number; position information of a demodulation reference signal (DMRS). The method of claim 30, wherein The DMRS is used to demodulate a physical downlink shared channel (PDSCH) that transmits system information. The method according to any one of claims 23-31, characterized in that The second part of the PBCH comprises one or more of the following information: information of a physical downlink control channel (PDCCH) transmission resource used for scheduling system information; information of an initial bandwidth part (BWP); information of a first subcarrier spacing. The method of claim 32, wherein The information of the PDCCH transmission resource comprises one or more of the following information: location information of the PDCCH transmission resource; size information of the PDCCH transmission resource. The method according to claim 32 or 33, characterized in that The PDCCH transmission resource comprises a first control resource set, and the first control resource set comprises a PDCCH search space for scheduling system information. The method of claim 34, wherein The PDCCH search space comprises a PDCCH common search space of type 0. The method according to claim 34 or 35, characterized in that The first control resource set comprises a PDCCH control resource set 0. The method according to any one of claims 32-36, characterized in that The information of the initial BWP comprises one or more of the following information: location information of the initial BWP; size information of the initial BWP. The method according to any one of claims 32-37, characterized in that The initial BWP comprises a first downlink BWP activated after cell search and / or a first uplink BWP activated after cell search. The method according to any one of claims 32-38, characterized in that The first subcarrier spacing is used for one or more of the following: transmission of system information, initial access, random access. The method according to any one of claims 32-39, characterized in that The first subcarrier spacing is used for determining the location of the PDCCH transmission resource and / or the location of the initial BWP. The method according to any one of claims 23-40, characterized in that The first synchronization signal comprises one or more of the following: a primary synchronization signal; a secondary synchronization signal. The method of any one of claims 23-41, wherein The first part of the PBCH is jointly encoded with the second part of the PBCH, or the first part of the PBCH is independently encoded from the second part of the PBCH. The method of any one of claims 23-42, wherein: The entire information is for reception by a terminal device having a bandwidth capability higher than or equal to a first bandwidth capability; and / or The partial information is for reception by a terminal device having a bandwidth capability lower than the first bandwidth capability. The method of any one of claims 23-43, wherein The second bandwidth is located within the first bandwidth. A terminal device characterized by comprising: Comprising: a receiving module configured to receive entire information or partial information of a synchronization signal block (SSB), the SSB being located within a first bandwidth, the partial information being located within a second bandwidth; wherein the partial information comprises a first part of a physical broadcast channel (PBCH) and a first synchronization signal, the entire information comprises the first part of the PBCH, a second part of the PBCH, and the first synchronization signal, and the second part of the PBCH carries different system information from the first part of the PBCH. The terminal device according to claim 45, characterized in that The system information carried by the second part of the PBCH is used to determine a first resource configuration, and if the terminal device receives the partial information, the first resource configuration is determined according to a predefined parameter. The terminal device of claim 45 or 46, wherein: The second part of the PBCH is transmitted on time domain resources occupied by the first part of the PBCH; or The second part of the PBCH is transmitted on time domain resources occupied by the first part of PBCH and the first synchronization signal. The terminal device according to any one of claims 45-47, characterized by The entire information further comprises a second synchronization signal, and the second synchronization signal is transmitted on time domain resources occupied by the first synchronization signal. The terminal device according to claim 48, characterized in that The second synchronization signal is constituted by a different synchronization sequence from the first synchronization signal, or the second synchronization signal is constituted by the same synchronization sequence as the first synchronization signal. The terminal device according to claim 48 or 49, characterized in that The second synchronization signal comprises one or more of the following: a primary synchronization signal, a secondary synchronization signal. The terminal device according to any one of claims 45-50, characterized by The first part of the PBCH occupies time domain resources different from those occupied by the first synchronization signal, and / or the time domain resources occupied by the first part of the PBCH include part or all of the time domain resources occupied by the first synchronization signal. The terminal device according to any one of claims 45-51, characterized by The first part of the PBCH comprises one or more of the following information: a system frame number; position information of a demodulation reference signal (DMRS). The terminal device according to claim 52, characterized in that The DMRS is used to demodulate a physical downlink shared channel (PDSCH) carrying system information. The terminal device according to any one of claims 45-53, characterized by The second part of the PBCH comprises one or more of the following information: information of a physical downlink control channel (PDCCH) transmission resource used for scheduling system information; information of an initial bandwidth part (BWP); information of a first subcarrier spacing. The terminal device according to claim 54, characterized in that The information of the PDCCH transmission resource comprises one or more of the following information: position information of the PDCCH transmission resource; size information of the PDCCH transmission resource. The terminal device according to claim 54 or 55, characterized in that The PDCCH transmission resource comprises a first control resource set, and the first control resource set comprises a PDCCH search space for scheduling system information. The terminal device according to claim 56, characterized in that The PDCCH search space comprises a PDCCH common search space of type 0. The terminal device according to claim 56 or 57, characterized in that The first control resource set comprises a PDCCH control resource set 0. The terminal device according to any one of claims 54-58, characterized by The information of the initial BWP comprises one or more of the following information: position information of the initial BWP; size information of the initial BWP. The terminal device according to any one of claims 54-59, characterized by The initial BWP comprises a first downlink BWP activated after cell search and / or a first uplink BWP activated after cell search. The terminal device according to any one of claims 54-60, characterized by The first subcarrier spacing is used for one or more of the following: transmission of system information, initial access, random access. The terminal device according to any one of claims 54-61, characterized by The first subcarrier spacing is used to determine the position of the PDCCH transmission resource and / or the position of the initial BWP. The terminal device according to any one of claims 45-62, characterized by The first synchronization signal comprises one or more of the following: a primary synchronization signal; a secondary synchronization signal. The terminal device according to any one of claims 45-63, characterized by The first part of the PBCH is jointly encoded with the second part of the PBCH, or the first part of the PBCH is independently encoded from the second part of the PBCH. The terminal device according to any one of claims 45-64, characterized by The receiving module is further configured to: if the bandwidth capability of the terminal device is higher than or equal to a first bandwidth capability, receive the entire information; and / or if the bandwidth capability of the terminal device is lower than the first bandwidth capability, receive the partial information. The terminal device according to any one of claims 45-65, characterized by The second bandwidth is located within the first bandwidth. A network device, characterized in that Comprise: a sending module configured to send a synchronization signal block (SSB) to a terminal device, wherein the SSB is located within a first bandwidth, and the SSB comprises partial information located within a second bandwidth; The partial information includes a first part of a physical broadcast channel (PBCH) and a first synchronization signal, and the full information of the SSB includes the first part of the PBCH, a second part of the PBCH, and the first synchronization signal, and the second part of the PBCH carries system information different from the first part of the PBCH. The network device of claim 67, wherein The system information carried by the second part of the PBCH is used to determine a first resource configuration, and if the terminal device receives the partial information, the first resource configuration is determined according to a predefined parameter. The network device according to claim 67 or 68, characterized in that: The second part of the PBCH is transmitted on time domain resources occupied by the first part of the PBCH; or The second part of the PBCH is transmitted on time domain resources occupied by the first part of PBCH and the first synchronization signal. The network device of any of claims 67-69, wherein The full information further includes a second synchronization signal, and the second synchronization signal is transmitted on time domain resources occupied by the first synchronization signal. The network device of claim 70, wherein The second synchronization signal and the first synchronization signal are constituted by different synchronization sequences, or the second synchronization signal and the first synchronization signal are constituted by the same synchronization sequence. The network device of claim 70 or 71, wherein The second synchronization signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal. The network device of any of claims 67-72, wherein The first part of the PBCH occupies time domain resources different from the first synchronization signal, and / or the time domain resources occupied by the first part of the PBCH include part or all of the time domain resources occupied by the first synchronization signal. The network device of any of claims 67-73, wherein The first part of the PBCH includes one or more of the following information: System frame number; Position information of a demodulation reference signal (DMRS). The network device of claim 74, wherein The DMRS is used to demodulate a physical downlink shared channel (PDSCH) carrying system information. The network device according to any one of claims 67-75, characterized in that The second part of the PBCH includes one or more of the following information: Information of a physical downlink control channel (PDCCH) transmission resource for scheduling system information; Information of an initial bandwidth part (BWP); Information of a first subcarrier spacing. The network device of claim 76, wherein The information of the PDCCH transmission resource includes one or more of the following information: Position information of the PDCCH transmission resource; Size information of the PDCCH transmission resource. The network device of claim 76 or 77, wherein, The PDCCH transmission resource includes a first control resource set, and the first control resource set includes a PDCCH search space for scheduling system information. The network device of claim 78, wherein The PDCCH search space includes a PDCCH common search space of type 0. The network device of claim 78 or 79, wherein, The first control resource set includes a PDCCH control resource set 0. The network device according to any one of claims 76-80, characterized in that The information of the initial BWP includes one or more of the following information: Position information of the initial BWP; Size information of the initial BWP. The network device according to any one of claims 76-81, characterized in that The initial BWP includes a first downlink BWP activated after cell search and / or a first uplink BWP activated after cell search. The network device according to any one of claims 76-82, characterized in that The first subcarrier spacing is used for one or more of the following: transmission of system information, initial access, and random access. The network device according to any one of claims 76-83, characterized in that The first subcarrier spacing is used to determine a location of the PDCCH transmission resource and / or a location of the initial BWP. The network device of any of claims 67-84, wherein The first synchronization signal comprises one or more of: a primary synchronization signal; a secondary synchronization signal. The network device of any of claims 67-85, wherein The first part of the PBCH is jointly encoded with the second part of the PBCH, or the first part of the PBCH is independently encoded from the second part of the PBCH. The network device of any of claims 67-86, wherein: The full information is for reception by a terminal device having a bandwidth capability that is higher than or equal to a first bandwidth capability; and / or The partial information is for reception by a terminal device having a bandwidth capability that is lower than the first bandwidth capability. The network device of any of claims 67-87, wherein The second bandwidth is within the first bandwidth. A terminal device, characterized by comprising: A terminal device comprising a transceiver, a memory, and a processor, the memory configured to store a program, the processor configured to invoke the program in the memory and control the transceiver to receive or transmit signals, so that the terminal device performs the method of any of claims 1-22. A network device, characterized in that A network device comprising a transceiver, a memory, and a processor, the memory configured to store a network device program, the processor configured to invoke the network device program in the memory and control the transceiver to receive or transmit signals, so that the network device performs the method of any of claims 23-44. An apparatus, characterized in that An apparatus comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method of any of claims 1-22 or 23-44. A chip characterized by An apparatus comprising a processor configured to invoke a program from a memory, such that a device in which the chip is installed performs the method of any of claims 1-22 or 23-44. A computer-readable storage medium, characterized by, A computer program product having stored thereon a program that causes a computer to perform the method of any of claims 1-22 or 23-44. A computer program product, characterized in that A computer program that causes a computer to perform the method of any of claims 1-22 or 43-44. A computer program, characterized in that The computer program causes a computer to perform the method of any of claims 1-22 or 23- 44.

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