Wireless communication methods, terminal devices and network devices

Abstract

Provided are wireless communication methods, terminal devices and network devices. A wireless communication method comprises: a network device sending a first SSB, wherein when the first SSB is sent within a first frequency range, the first SSB is a first-type SSB, and when the first SSB is sent within a second frequency range, the first SSB is a second-type SSB; the first-type SSB and the second-type SSB satisfy one or more of the following: the first-type SSB has an SSB burst periodicity of T1, the second-type SSB has an SSB burst periodicity of T2, and T1<T2; the first-type SSB has a synchronization raster width of F1, the second-type SSB has a synchronization raster width of F2, and F1>F2; and the first-type SSB comprises W1 subcarriers in a frequency domain, the second-type SSB comprises W2 subcarriers in the frequency domain, and W1>W2; and the network device may send SSBs of corresponding types for different frequency ranges. On this basis, terminal devices can implement cell search bound to frequency bands, thereby improving the access flexibility of the terminal devices.

Description

Wireless Communication Method, Terminal Device, and Network Device Technical Field

[0001] This application relates to the field of communication technologies, and more particularly, to a wireless communication method, a terminal device, and a network device. Background Art

[0002] In the related art, the synchronization signal / physical broadcast channel block (SSB) has a single structure. For example, it contains a fixed number of physical resource blocks (PRBs), and has a fixed time-domain transmission period (such as the transmission period of the SSB burst for initial access is 20 ms) to facilitate various terminal devices to perform initial access through the SSB. However, the structure of this SSB may cause some terminal devices (such as low-capability terminal devices) to be unable to access the network. Or, for network devices, the SSB burst with a fixed period also cannot achieve more effective network energy saving.<> Summary of the Invention

[0003] This application provides a wireless communication method, a terminal device, and a network device. The following introduces each aspect involved in this application.

[0004] In a first aspect, a wireless communication method is provided. The method includes: a network device sending a first SSB; where, when the first SSB is sent within a first frequency range, the first SSB is a first type of SSB, and when the first SSB is sent within a second frequency range, the first SSB is a second type of SSB; the first type of SSB and the second type of SSB satisfy one or more of the following: the period of the SSB burst of the first type of SSB is T1, the period of the SSB burst of the second type of SSB is T2, and T1 < T2; the synchronization grid width of the first type of SSB is F1, the synchronization grid width of the second type of SSB is F2, and F1 > F2; the first type of SSB includes W1 subcarriers in the frequency domain, the second type of SSB includes W2 subcarriers in the frequency domain, and W1 > W2.

[0005] In a second aspect, a wireless communication method is provided. The method includes: a terminal device receiving a first Synchronization Signal / Physical Broadcast Channel Block (SSB); wherein, the first SSB is a first type of SSB or a second type of SSB; wherein, the first type of SSB and the second type of SSB satisfy one or more of the following: the period of the SSB burst of the first type of SSB is T1, the period of the SSB burst of the second type of SSB is T2, and T1 < T2; the synchronization grid width of the first type of SSB is F1, the synchronization grid width of the second type of SSB is F2, and F1 > F2; the first type of SSB includes W1 subcarriers in the frequency domain, the second type of SSB includes W2 subcarriers in the frequency domain, and W1 > W2.

[0006] In a third aspect, a network device is provided. The network device includes: a transmitting unit configured to transmit a first SSB; wherein, when the first SSB is transmitted within a first frequency range, the first SSB is a first type of SSB, and when the first SSB is transmitted within a second frequency range, the first SSB is a second type of SSB; the first type of SSB and the second type of SSB satisfy one or more of the following: the period of the SSB burst of the first type of SSB is T1, the period of the SSB burst of the second type of SSB is T2, and T1 < T2; the synchronization grid width of the first type of SSB is F1, the synchronization grid width of the second type of SSB is F2, and F1 > F2; the first type of SSB includes W1 subcarriers in the frequency domain, the second type of SSB includes W2 subcarriers in the frequency domain, and W1 > W2.

[0007] In a fourth aspect, a terminal device is provided. The terminal device includes: a receiving unit configured to receive a first SSB; wherein, the first SSB is a first type of SSB or a second type of SSB, the first type of SSB is for a first frequency range, and the second type of SSB is for a second frequency range; wherein, the first type of SSB and the second type of SSB satisfy one or more of the following: the period of the SSB burst of the first type of SSB is T1, the period of the SSB burst of the second type of SSB is T2, and T1 < T2; the synchronization grid width of the first type of SSB is F1, the synchronization grid width of the second type of SSB is F2, and F1 > F2; the first type of SSB includes W1 subcarriers in the frequency domain, the second type of SSB includes W2 subcarriers in the frequency domain, and W1 > W2.

[0008] Fifthly, a terminal device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or send signals so that the terminal device performs some or all of the steps in the method of the second aspect.

[0009] In a sixth aspect, a network device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals so that the network device performs some or all of the steps in the method of the first aspect.

[0010] In a seventh aspect, a communication system is provided, which includes 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, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program that causes a terminal device and / or a network device to perform some or all of the steps in the methods of the above aspects.

[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 terminal device and / or a network device to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

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

[0014] The first type of SSB and the second type of SSB can be different. Therefore, in this application, the network device can send the corresponding type of SSB for different frequency ranges. In other words, this application can bind different frequency bands with different types of SSBs. Based on this, the terminal device can perform cell search bound to the frequency band, that is, terminal devices in different frequency ranges can access the network through different types of SSBs, thereby improving the flexibility of terminal device access. Attached Figure Description

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

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

[0017] Figure 3 is a schematic diagram of the traditional SSB transmission scheme.

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

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

[0020] Figure 6 is an example diagram of a first type SSB and a second type SSB provided in the embodiments of this application.

[0021] Figure 7 is an example diagram of a synchronization grid width provided in an embodiment of this application.

[0022] Figure 8 is an example diagram of another type of first-type SSB and another type of second-type SSB provided in the embodiments of this application.

[0023] Figure 9 is an example diagram of another type of first-type SSB and another type of second-type SSB provided in the embodiments of this application.

[0024] Figure 10 is a format example diagram of a first type SSB provided in an embodiment of this application.

[0025] Figure 11 is an example diagram of another type of first-type SSB and another type of second-type SSB provided in the embodiments of this application.

[0026] Figure 12 is an example diagram of another first type SSB and a second type SSB provided in the embodiments of this application.

[0027] Figure 13 is an example diagram of another first type SSB and a second type SSB provided in the embodiments of this application.

[0028] Figure 14 is a schematic structural diagram of a network device provided in an embodiment of this application.

[0029] Figure 15 is a schematic structural diagram of a terminal device provided in an embodiment of this application.

[0030] Figure 16 is a schematic structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0031] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0032] Communication system

[0033] Figure 1 illustrates a wireless communication system 100 according to an embodiment of this application. The wireless communication system 100 may include communication devices. These communication devices 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.

[0034] Figure 1 illustrates an exemplary network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other terminal devices within its coverage area. This application embodiment does not limit this.

[0035] 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.

[0036] 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.

[0037] 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 device in the embodiments of this application can be a mobile phone, tablet computer, laptop computer, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D) communication. 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.

[0038] The network device in this application embodiment can be a device for communicating with terminal devices. The network device may also include an access network device. The access network device can provide communication coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The access network device can also be called a wireless access network device or a base station, etc. In this application embodiment, the access network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. Access network equipment can broadly encompass various names listed below, or be replaced by names such as: NodeB, Evolved NodeB (eNB), Next Generation NodeB (gNB), Relay Station, Transmitting and Receiving Point (TRP), Transmitting Point (TP), Master eNB (MeNB), Secondary eNB (SeNB), Multi-Standard Radio (MSR) Node, Home Base Station, Network Controller, Access Node, Wireless Node, Access Point (AP), Transmitter Node, Transceiver Node, Baseband Unit (BBU), Remote Radio Unit (RRU), Active Antenna Unit (AAU), Remote Radio Head (RRH), Central Unit (CU), Distributed Unit (DU), Location Node, Centralized Unit-Control Plane (CU-CP), Centralized Unit-User Plane (CU-User) Base stations can be macro base stations, micro base stations, relay nodes, donor nodes, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, equipment performing base station functions in D2D, V2X, and machine-to-machine (M2M) communications, network-side equipment in 6G networks, and equipment performing 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 equipment forms used in the access network equipment.

[0039] 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.

[0040] Wireless communication systems involve communication equipment that can include not only access network equipment and terminal equipment, but also core network elements. Core network elements can be implemented through devices; that is, core network elements are core network devices. It can be understood that core network devices can also be a type of network device.

[0041] The core network elements in this application embodiment may include network elements that process and forward user signaling and data. For example, core network equipment may include core access and mobility management function (AMF), session management function (SMF), location management function (LMF), network slice selection function (NSSF), authentication server function (AUSF), unified data management (UDM), policy control function (PCF), user plane function (UPF), sensing function (SF), network data analytics function (NWDAF), and artificial intelligence (AI) function management entity, etc. Of course, the core network may also include other network elements, which are not listed here.

[0042] 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.

[0043] 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.

[0044] 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).

[0045] Signal transmission process in a wireless communication system

[0046] Figure 2 is a flowchart of signal transmission in a wireless communication system applicable to the embodiments of this application. As shown in Figure 2, the signal transmission process in the wireless communication system can be roughly divided into various channel coding processes S211 to S218 as shown in Figure 2.

[0047] In the channel coding process S211, the transmitter performs channel coding on the information to be transmitted (e.g., source bit stream) to obtain the encoded bit stream. The information to be transmitted can be in the form of a bit stream.

[0048] In the modulation process S212, the code stream is modulated into modulation symbols.

[0049] In the pilot insertion process S213, pilot symbols are inserted into the above modulation symbols to form a signal to be transmitted. The pilot symbols can be used by the receiver for channel estimation and symbol detection.

[0050] In transmission signal S214, the aforementioned signal is carried on the channel and transmitted to the receiver. During transmission through the channel, noise is typically added to the signal.

[0051] In the channel estimation process S215, the receiver can perform channel estimation based on the pilot signal to obtain channel state information (CSI), and feed the CSI back to the transmitter through the feedback link so that the transmitter can adjust the channel coding, modulation, precoding and other methods.

[0052] In the symbol detection process S216, symbol detection is performed on the received modulation symbols to obtain the detection results.

[0053] In the demodulation process S217, the received modulation symbols are demodulated based on the detection results to obtain the code stream.

[0054] In the channel decoding process S218, the code stream is decoded to obtain the recovered information (e.g., the recovered bit stream), wherein the recovered information may be in the form of a bit stream.

[0055] It should be understood that the channel coding processes S211 to S218 shown in Figure 2 are merely exemplary examples of common signal processing procedures in wireless communication systems. Wireless communication systems may also include signal processing procedures such as resource mapping, precoding, interference cancellation, and CSI measurement. For the sake of brevity, these will not be elaborated upon further in this application.

[0056] SSB structure

[0057] In some communication systems (e.g., 5G NR), the SSB is designed for enhanced mobile broadband (eMBB) terminal equipment. Referring to Figure 3, the SSB bandwidth is 20 physical resource blocks (PRBs). Taking a subcarrier spacing of 15kHz as an example, the SSB bandwidth is 3.6MHz. The SSB contains four orthogonal frequency division multiplexing (OFDM) symbols in the time domain. The primary synchronization signal (PSS) is located in the first symbol, with a frequency domain width of 12 PRBs. The secondary synchronization signal (SSS) is located in the third symbol, also with a frequency domain width of 12 PRBs. The physical broadcast channel (PBCH) is located in the second to fourth symbols, with a frequency domain width of 20 PRBs in the second and fourth symbols, thus fully utilizing the SSB bandwidth. On the 3rd symbol, it occupies the 4 lowest frequency domain positions and the 4 highest frequency domain positions in the SSB bandwidth, that is, it occupies the other bandwidths besides SSS.

[0058] System Information Receiving Method

[0059] In some communication systems (e.g., 5G NR), system information is carried in the master information block (MIB) and the system information block (SIB). The MIB is carried in the PBCH within the SSB, and the SIB is carried in the PDSCH. Correspondingly, the time-frequency resources of the PDSCH are indicated by the DCI transmitted in CORESET#0. That is, the terminal device can detect the DCI in the Type0 PDCCH common search space of CORESET#0. If the terminal device detects the DCI, it can read the scheduling information from it. This scheduling information indicates the time-frequency resources of the PDSCH transmitting the SIB. Then, the terminal device can receive the SIB on the time-frequency resources of the PDSCH.

[0060] Indication method for CORESET#0

[0061] In some communication systems (e.g., 5G NR), CORESET#0 is the first control resource set to monitor the PDCCH during the initial access process of a terminal device. The location of CORESET#0 is indicated by the MIB carried by the PBCH in the SSB. Since the information that the MIB can carry is very limited, the communication protocol defines several multiplexing modes between CORESET#0 and the SSB. In this way, the MIB can indicate one of the defined multiplexing modes.

[0062] In some implementations, the multiplexing patterns corresponding to the multiplexing modes defined above can be seen in Figures 4A to 4C. The multiplexing pattern shown in Figure 4A adopts time-division multiplexing (TDM). In the time domain, the time-frequency resources of SSB and CORESET#0 do not overlap. In the frequency domain, the bandwidth of CORESET#0 completely or nearly completely covers the bandwidth of SSB.

[0063] The multiplexing pattern shown in Figure 4B employs a combination of TDM and frequency division multiplexing (FDM). In the time domain, the time-frequency resources of SSB and CORESET#0 do not overlap. In the frequency domain, the bandwidth of SSB and CORESET#0 do not overlap and are as close as possible.

[0064] The multiplexing pattern shown in Figure 4C uses FDM. In the time domain, the time-frequency resources of SSB overlap with those of CORESET#0. In the frequency domain, the bandwidth of SSB does not overlap with that of CORESET#0, and they are as close as possible.

[0065] Accordingly, the terminal device can first detect the SSB, determine the multiplexing pattern used by the SSB and CORESET#0 based on the MIB in the PBCH, and then determine the time-frequency resources of CORESET#0 based on the multiplexing pattern. Afterwards, the terminal device can search for the DCI that schedules other system information in CORESET#0, determine the time-frequency resources where the PDSCH carrying system information is located based on the indication of the DCI, and then read the system information from the PDSCH.

[0066] In related technologies, the synchronization signal / physical broadcast channel block (SSB) has a single structure, containing a fixed number of PRBs and a fixed time-domain transmission period (e.g., the transmission period of the initial access SSB burst is 20ms), so that various terminals can perform initial access through the SSB. Although different subcarrier spacings can be used in different frequency bands, and the actual SSB bandwidth and SSB burst period can vary accordingly, an SSB containing a fixed number of PRBs cannot support access by terminals with bandwidth capabilities less than the SSB bandwidth and the number of PRBs (such as low-end Internet of Things (IoT) terminals). Furthermore, SSB bursts with a fixed period cannot achieve more effective base station energy saving.

[0067] Figure 5 is a schematic flowchart of a wireless communication method provided in an embodiment of this application to solve the above problems.

[0068] The method shown in Figure 5 can be executed by terminal devices and network devices. The method shown in Figure 5 may include step S510.

[0069] In step S510, the network device sends the first SSB. The terminal device receives the first SSB.

[0070] The first SSB can be either a first-type SSB or a second-type SSB. A first-type SSB is for an SSB operating within a first frequency range. A second-type SSB is for a second frequency range. If the first SSB is transmitted within the first frequency range, it can be a first-type SSB. If the first SSB is transmitted within the second frequency range, it can be a second-type SSB.

[0071] For network devices, the network device can transmit a first type of SSB and / or a second type of SSB. For example, for a first frequency range, the network device can transmit a first type of SSB. Similarly, for a second frequency range, the network device can transmit a second type of SSB.

[0072] As one implementation, Type 1 SSBs and Type 2 SSBs can be transmitted simultaneously. That is, Type 1 SSBs and Type 2 SSBs can be transmitted on the same time-domain resources.

[0073] As an alternative implementation, Type 1 SSBs and Type 2 SSBs can be sent at different times. That is, Type 1 SSBs and Type 2 SSBs can be sent on different time-domain resources.

[0074] For a terminal device, the terminal device can receive a first type of SSB and / or a second type of SSB. For example, when the terminal device is in a first frequency range, the terminal device can receive a first type of SSB. Similarly, when the terminal device is in a second frequency range, the terminal device can receive a second type of SSB. Furthermore, when the terminal device is in a frequency range covered by both the first and second frequency ranges, the terminal device can receive both the first and second type of SSB.

[0075] The first frequency range and the second frequency range are different frequency ranges. That is, the first frequency range and the second frequency range are completely different or not completely the same frequency range. For example, the first frequency range and the second frequency range do not overlap. For instance, the first frequency range can be a frequency range greater than or equal to f0 (i.e., frequencies within the first frequency range are greater than or equal to f0), and the second frequency range can be a frequency range less than f0 (i.e., frequencies within the second frequency range are less than f0). Here, f0 can be a frequency defined by a protocol. Alternatively, the first frequency range and the second frequency range may partially overlap. For instance, the lowest frequency of the first frequency range is less than the highest frequency of the second frequency range, and the highest frequency of the first frequency range is greater than the highest frequency of the second frequency range, and the lowest frequency of the first frequency range is greater than the lowest frequency of the second frequency range.

[0076] In some embodiments, the first frequency range is higher than the second frequency range. Terminal devices with lower capabilities mostly operate in the lower frequency range, while terminal devices with higher capabilities mostly operate in the higher frequency range. The first frequency range can be the frequency range in which the terminal devices with higher capabilities operate, and the second frequency range can be the frequency range in which the terminal devices with lower capabilities operate. In this application, network devices can transmit different types of SSBs in different frequency ranges to meet the network access needs of terminal devices with different capability levels.

[0077] It should be noted that terminal devices with lower capabilities may include, for example, terminal devices using low-speed enhanced mobile broadband (eMBB) and low-end IoT terminal devices. Terminal devices with higher capabilities may include, for example, terminal devices using high-speed eMBB and high-end IoT terminal devices.

[0078] It should be noted that the first frequency range being higher than the second frequency range may include one or more of the following: the highest frequency of the first frequency range is greater than the highest frequency of the second frequency range; the lowest frequency of the first frequency range is greater than the highest frequency of the second frequency range. For example, the first frequency range may be a frequency range greater than or equal to f0, and the second frequency range may be a frequency range less than f0.

[0079] The first type of SSB and the second type of SSB may be different. Therefore, in this application, the network device may send the corresponding type of SSB for different frequency ranges. That is to say, this application can achieve the binding of different frequency bands and different types of SSBs. Based on this, the terminal device can implement cell search bound to the frequency band, that is, the terminal devices in different frequency ranges can access through different types of SSBs, thereby improving the flexibility of the terminal device to access.

[0080] In some embodiments, the first type of SSB and the second type of SSB may be different in one or more of the following aspects: the period of the SSB burst, the synchronization raster width, and the number of subcarriers. The following will be described separately.

[0081] In some embodiments, the period of the SSB burst of the first type of SSB (SSB burst periodicity) is T1, and the period of the SSB burst of the second type of SSB (SSB burst) is T2. T1 and T2 are not equal.

[0082] As an implementation manner, T1 < T2. Exemplarily, the minimum value of T2 = the minimum value of T1 × 2n. Where n is an integer greater than 0. That is to say, the minimum value of T2 may be an even multiple of the minimum value of T1.

[0083] For example, when the first frequency range is higher than the second frequency range, T1 < T2. That is to say, the period of the SSB burst sent in the higher frequency range may be smaller, and the period of the SSB burst sent in the lower frequency range may be larger. As described above, most of the terminal devices operating in the lower frequency range have lower capabilities. Therefore, this embodiment can implement a larger period of the SSB burst in the frequency range where the terminal devices with lower capabilities operate. Based on this, this solution can reduce the cell search complexity and battery power consumption of the terminal devices with lower capabilities. Most of the terminal devices operating in the higher frequency range have higher capabilities. Therefore, the period of the SSB burst used in the frequency range where the terminal devices with higher capabilities operate is smaller. Based on this, this solution can ensure that the terminal device has higher cell search performance.

[0084] For example, the first frequency range could be the frequency band primarily serving terminal devices with higher service capabilities (e.g., the frequency band primarily serving eMBB), and the second frequency range could be the frequency band primarily serving terminal devices with lower service capabilities (e.g., the frequency band primarily serving low-end IoT terminal devices). In other words, the period of SSB bursts transmitted in the frequency band of terminal devices with higher service capabilities can be shorter, while the period of SSB bursts transmitted in the frequency band of terminal devices with lower service capabilities can be longer. Therefore, this scheme can reduce the cell search complexity and battery power consumption of terminal devices with lower capabilities, while ensuring that terminal devices with higher capabilities have higher cell search performance.

[0085] The following example is illustrated with reference to Figure 6. In Figure 6, frequency region 1 is greater than f0, and frequency region 2 is less than f0. Frequency region 1 is the first frequency region, and frequency region 2 is the second frequency region. T1 is 20ms, and T2 is 40ms. As can be seen from Figure 6, in higher frequency bands, a 20ms SSB burst period can be used to ensure that broadband terminals have high cell search performance. In lower frequency bands, a longer SSB burst period (such as 40ms) can be used to reduce the cell search complexity and battery consumption of low-bandwidth terminals such as low-end IoT terminals.

[0086] In some embodiments, the synchronization grid width of the first type SSB is F1, and the synchronization grid width of the second type SSB is F2. F1 and F2 are not equal.

[0087] As one implementation, F1 > F2. For example, F1 = F2 × 2m, where m is an integer greater than 0. That is, F1 can be an even multiple of F2.

[0088] For example, when the first frequency range is higher than the second frequency range, F1 > F2. That is, the synchronization grid width of an SSB transmitted in a higher frequency range can be larger, while the synchronization grid width of an SSB transmitted in a lower frequency range can be smaller. In higher frequency bands, because the system bandwidth is typically larger, a larger synchronization grid width can be used, thus controlling the cell search duration in high-frequency, high-bandwidth systems. In lower frequency bands, because the system bandwidth is typically smaller, a smaller synchronization grid width can be used, thus supporting low-bandwidth system deployments in low-frequency bands.

[0089] For example, the first frequency range could be the frequency band of terminal equipment with high service capabilities, and the second frequency range could be the frequency band of terminal equipment with low service capabilities. That is, the synchronization grid width of SSBs transmitted in the frequency band of terminal equipment with high service capabilities can be larger, while the synchronization grid width of SSBs transmitted in the frequency band of terminal equipment with low service capabilities can be smaller. In the frequency band of terminal equipment with high service capabilities, since the system bandwidth is usually larger, a larger synchronization grid width can be used, thereby controlling the cell search duration in a high-bandwidth system. In the frequency band of terminal equipment with low service capabilities, since the system bandwidth is usually smaller, a smaller synchronization grid width can be used, thereby supporting low-bandwidth system deployments in that frequency band.

[0090] The following example is illustrated with reference to Figure 7. In Figure 7, frequency range 1 is greater than f0, and frequency range 2 is less than f0. Frequency range 1 is the first frequency range, and frequency range 2 is the second frequency range. As can be seen from Figure 7, in frequency range 1, the first type of SSB can use a larger synchronization grid width F1. In frequency range 2, the second type of SSB can use a smaller synchronization grid width F2.

[0091] In some embodiments, the bandwidth of the first type of SSB is not equal to the bandwidth of the second type of SSB. That is, network devices can transmit SSBs with different bandwidths in different frequency ranges, and terminal devices can search for SSBs with different bandwidths in different frequency ranges.

[0092] In some embodiments, a first type of SSB comprises W1 subcarriers in the frequency domain, and a second type of SSB comprises W2 subcarriers in the frequency domain. W1 and W2 are not equal. The subcarriers may, for example, include orthogonal frequency division multiplexing (OFDM) subcarriers. For example, in a first frequency range, the network device transmits a first type of SSB comprising W1 subcarriers in the frequency domain; in a second frequency range, the network device transmits a second type of SSB comprising W2 subcarriers in the frequency domain. As another example, a terminal device searches for an SSB with a bandwidth of W1 subcarriers in the first frequency range; the terminal device searches for an SSB with a bandwidth of W2 subcarriers in the second frequency range.

[0093] As one possible implementation, W1 and W2 can satisfy the condition: W1 > W2.

[0094] For example, when the first frequency range is higher than the second frequency range, W1 > W2. That is, an SSB transmitted in a higher frequency range can contain more subcarriers in the frequency domain, while an SSB transmitted in a lower frequency range can contain fewer subcarriers. The terminal device can search for an SSB with bandwidth W1 in the first frequency range and an SSB with bandwidth W2 in the second frequency range.

[0095] In lower frequency bands, there are often fragmented spectrum areas with very small bandwidths. Using narrow-bandwidth SSBs (Type II SSBs), network devices can deploy relatively simple mobile communication systems, such as low-rate eMBB systems or low-end IoT (Internet of Things) systems, on these smaller bandwidths. These systems do not require complex parameter selection from the SSB; therefore, narrow-bandwidth SSBs can significantly simplify radio system design and reduce cell search signaling overhead. In higher frequency bands, larger bandwidth spectrums can typically be used, employing high-bandwidth SSBs (Type I SSBs). Network devices can deploy relatively complex mobile communication systems, such as high-rate eMBB systems or high-end IoT (Internet of Things) systems, on these larger bandwidths. High-bandwidth SSBs provide these systems with richer parameter selection, improving system resource allocation flexibility and spectrum efficiency.

[0096] For example, the first frequency range can be the frequency band of terminal equipment with high service capabilities, and the second frequency range can be the frequency band of terminal equipment with low service capabilities. That is to say, the SSB transmitted in the frequency band of terminal equipment with high service capabilities can contain more subcarriers in the frequency domain, while the SSB transmitted in the frequency band of terminal equipment with low service capabilities can contain fewer subcarriers in the frequency domain.

[0097] In frequency bands primarily used by terminal devices with lower service capabilities, there are often fragmented spectrum areas with very small bandwidths. Using narrow-bandwidth SSBs (Type II SSBs), network devices can deploy relatively simple mobile communication systems, such as low-speed eMBB systems or low-end IoT (Internet of Things) systems, on these smaller bandwidths. These systems do not require complex parameter selection from the SSB; therefore, narrow-bandwidth SSBs can significantly simplify radio system design and reduce cell search signaling overhead. Conversely, in frequency bands primarily used by terminal devices with higher service capabilities, larger bandwidth spectrum can typically be used. Employing high-bandwidth SSBs (Type I SSBs), network devices can deploy relatively complex mobile communication systems, such as high-speed eMBB systems or high-end IoT systems, on these larger bandwidths. High-bandwidth SSBs provide these systems with richer parameter selection, improving system resource allocation flexibility and spectrum efficiency.

[0098] The following example is illustrated with reference to Figure 8. In Figure 8, frequency range 1 is greater than f0, and frequency range 2 is less than f0. Frequency range 1 is the first frequency range, and frequency range 2 is the second frequency range. As can be seen from Figure 8, in frequency range 1, the number of subcarriers W1 of the first type SSB is greater than the number of subcarriers W2 of the second type SSB.

[0099] The following examples illustrate the structure of Type I SSB and Type II SSB.

[0100] In some embodiments, the first type of SSB includes a synchronization signal (SS). The SS included in the first type of SSB may include a PSS and an SSS.

[0101] In some embodiments, the second type SSB includes SS. The SS included in the second type SSB may include PSS and SSS.

[0102] In some embodiments, the structures of the SS in the first type SSB and the SS in the second type SSB are different. For example, the SS in the first type SSB has a larger frequency domain bandwidth than the SS in the second type SSB. Exemplarily, the SS in the first type SSB has a longer sequence length than the SS in the second type SSB.

[0103] In some embodiments, a first type SSB may include a PBCH. For example, a first type SSB may include a PBCH and an SS. A second type SSB may include a PBCH. For example, a second type SSB may include a PBCH and an SS.

[0104] In one implementation, the PBCHs included in the first type SSB are of the first type, and the PBCHs included in the second type SSB are of the second type. The first type PBCHs and the second type PBCHs are different. That is, the PBCHs included in the first type SSB are different from those included in the second type SSB.

[0105] In some embodiments, the first type PBCH and the second type PBCH occupy different frequency domain resources. For example, the first type PBCH occupies frequency domain resources spanning W1 subcarriers, and the second type PBCH occupies frequency domain resources spanning W2 subcarriers. W1 and W2 are as described above.

[0106] As one implementation, the MIB information carried by the first type of PBCH can be more than the MIB information carried by the second type of PBCH.

[0107] For example, the first type PBCH can carry complete MIB information. Based on the first type PBCH, the terminal device can perform cell search with better performance and higher resource efficiency. By accessing the system through the first type SSB and receiving the first type PBCH, the terminal device can obtain more flexible resource scheduling during the initial access process. For example, it can schedule multiple subcarrier interval resources before the RRC connection is established, and configure the initial PDCCH CORESET or initial BWP at multiple candidate locations, thereby achieving better initial access performance and higher spectrum efficiency.

[0108] For example, the second type PBCH can carry some MIB information. For instance, the second type PBCH can carry basic MIB information. Based on the second type PBCH, the terminal device can perform a simple cell search.

[0109] In some embodiments, the SS in the first type SSB can be the same as the SS in the second type SSB. In other words, the SS in the first type SSB and the SS in the second type SSB can have the same structure. Alternatively, the SS in the first type SSB and the SS in the second type SSB can adopt a unified design. For example, the PSS in the first type SSB and the PSS in the second type SSB are the same, and the SSS in the first type SSB and the SSS in the second type SSB are the same.

[0110] In some embodiments, the bandwidth of the SS in the first type SSB can be the same as the bandwidth of the second type SS. For example, when the bandwidths of the first type PBCH in the first type SSB and the second type PBCH in the second type SSB are different, the bandwidth of the SS in the first type can be the same as the bandwidth of the second type SS. Exemplarily, the bandwidth of the SS in both the first and second type SSBs can be W2 subcarriers. Similarly, the bandwidths of the PSS and SSS in the first type can both be W2 subcarriers. The bandwidths of the PSS and SSS in the second type can both be W2 subcarriers.

[0111] The following example, illustrated in Figure 9, illustrates this concept. In Figure 9, frequency range 1 is greater than f0, and frequency range 2 is less than f0. Frequency range 1 is the first frequency range, and frequency range 2 is the second frequency range. The bandwidth of the first type of SSB containing the first type of PBCH is W1 subcarriers. The bandwidth of both the PSS and SSS contained in the first type of SSB is W2 subcarriers. The bandwidth of the second type of SSB containing the second type of PBCH is W2 subcarriers. The bandwidth of both the PSS and SSS contained in the second type of SSB is also W2 subcarriers.

[0112] In some embodiments, the portion of the first type PBCH within W2 subcarriers is identical to that of the second type PBCH. The system information transmitted in the portion of the first type PBCH outside W2 subcarriers includes information not included in the system information transmitted by the second type PBCH. This embodiment can accommodate SSBs with different bandwidths using as similar an SSB structure as possible, thereby simplifying system design and cell search procedures.

[0113] Figure 10 is a format example diagram of a first type SSB provided in an embodiment of this application.

[0114] As shown in Figure 10, the bandwidth of both the PSS and SSS in the first type SSB is W2 subcarriers. The bandwidth of the first type PBCH in the first type SSB is W1. The first type PBCH is represented by a gray rectangle. The portion of the first type PBCH within W2 subcarriers is the same as that of the second type PBCH.

[0115] When a terminal device accesses the system via a second type of SSB, the terminal device can determine the configuration related to the system information transmitted by the first type of PBCH that includes information and the system information transmitted by the second type of PBCH that does not include information through predefined parameters.

[0116] In some embodiments, the system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: information on PDCCH transmission resources, information on the initial bandwidth portion (initial BWP), and information on the common subcarrier spacing (common SCS). These will be described separately below.

[0117] PDCCH transmission resource information

[0118] In some embodiments, the information of the PDCCH transmission resource may include one or more of the following: location information of the PDCCH transmission resource; size information of the PDCCH transmission resource. If the information of the PDCCH transmission resource does not include the size information of the PDCCH transmission resource, the size information of the PDCCH transmission resource may be predefined.

[0119] In some embodiments, the PDCCH transmission resource is a first CORESET. For example, the first CORESET can be CORESET #0. That is, the terminal device can determine the location information and / or size information of CORESET #0 through predefined rules. The size information of CORESET #0 may, for example, include the time-domain length of CORESET #0 (e.g., the number of symbols).

[0120] The first CORESET contains the PDCCH search space for scheduling system information. This PDCCH search space could be, for example, the Type0 PDCCH common search space.

[0121] When the terminal device receives a first type SSB within the first frequency range, it can read the location information of the initial PDCCH control resource set (CORESET#0) from the MIB information in the first type PBCH. CORESET#0 contains the initial PDCCH search space. The terminal device can search this search space for the DCI of the PDSCH that schedules system information, thus completing the reception of the system information. The MIB information in the first type PBCH can select a candidate location from several candidate locations for CORESET#0 around the SSB. An example is provided below with reference to Figure 11.

[0122] In Figure 11, frequency range 1 is greater than f0, and frequency range 2 is less than f0. Frequency range 1 is the first frequency range, and frequency range 2 is the second frequency range.

[0123] As shown in Figure 11, candidate position 0 is the CORESET#0 position multiplexed with SSB (Type 1 SSB) TDM. Candidate positions 1 and 2 are the CORESET#0 positions multiplexed with SSB FDM. Candidate position 3 is the CORESET#0 position multiplexed with SSB TDM plus FDM. In the example of Figure 11, the MIB information in the additional PBCH indicates candidate position 3, i.e., the CORESET#0 position multiplexed with SSB TDM plus FDM, among the four candidate positions. After reading the MIB information in the Type 1 PBCH, the terminal device determines that CORESET#0 is located in candidate position 3.

[0124] Optionally, the MIB information in the first type PBCH may also include information about the size of CORESET#0, such as the time-domain length of CORESET#0 (e.g., the number of symbols). Alternatively, the MIB information in the first type PBCH may not include information about the size of CORESET#0, or may only include a portion of that size information. For example, the bandwidth of CORESET#0 may be predefined as W1, or the time-domain length of CORESET#0 may be N symbols.

[0125] When a terminal device receives a second type of SSB within the second frequency range, it can determine the PDCCH transmission resource (e.g., CORESET#0) based on predetermined rules. For example, for a second type of SSB, CORESET#0 can be multiplexed with SSB TDM, with a frequency domain width of W2 and a time domain length of M symbols. Here, M can be predefined. Continuing with Figure 11 as an example, CORESET#0 can be multiplexed with SSB TDM, with a frequency domain width of W2 and a time domain length of M symbols.

[0126] Information on the initial bandwidth

[0127] In some embodiments, the information for the initial bandwidth portion may include one or more of the following: location information of the initial bandwidth portion, and size information of the initial bandwidth portion. The size information of the initial bandwidth portion may, for example, be W1 subcarriers or W2 subcarriers. If the information for the initial bandwidth portion does not include the size information, the size information of the initial bandwidth portion may be predefined.

[0128] It should be noted that in this application, the initial bandwidth portion refers to the first BWP activated after the terminal device initially accesses the network, including at least the first downlink BWP activated after cell search, or the first uplink BWP activated after cell search.

[0129] When the terminal device receives a first type SSB within the first frequency range, it can read the location information of the initial bandwidth portion from the MIB information in the first type PBCH. The MIB information in the first type PBCH can select a candidate location from several candidate locations of the initial bandwidth portion around the SSB. This will be explained below with reference to Figure 12.

[0130] In Figure 12, frequency range 1 is greater than f0, and frequency range 2 is less than f0. Frequency range 1 is the first frequency range, and frequency range 2 is the second frequency range.

[0131] As shown in Figure 12, candidate position 0 is the initial downlink bandwidth portion (initial dL BWP) location with the same bandwidth and position as the SSB, and candidate positions 1 and 2 are the initial downlink bandwidth portion locations adjacent to the SSB location. In the example of Figure 12, the MIB information in the first type PBCH indicates candidate position 2 among the three candidate positions, which is the high-end position in the frequency domain adjacent to the SSB. After reading the MIB information in the first type PBCH, the terminal device determines that the initial downlink bandwidth portion is located at candidate position 2. Optionally, the MIB information in the first type PBCH may also include information about the bandwidth size of the initial downlink bandwidth portion (such as W1 or W2). The MIB information in the first type PBCH may also not include information about the size of the initial downlink bandwidth portion, such as the bandwidth of the initial downlink bandwidth portion being predefined as W1.

[0132] When a terminal device receives a Type 2 SSB within frequency range 2, it then receives a Type 2 PBCH. Since there is no indication information for the initial bandwidth portion, the location of the initial downlink bandwidth portion can be determined according to predefined rules. For example, the initial downlink bandwidth portion of the Type 2 SSB has the same size and location as the Type 2 SSB. Referring again to Figure 12, for a terminal device accessing the system from frequency range 2, the initial downlink bandwidth portion always has the same size and location as the SSB, with a frequency domain width of W2.

[0133] Information on common subcarrier spacing

[0134] In this application, the public SCS can be the subcarrier spacing used in one or more of the following processes: system information transmission; initial access; random access process.

[0135] When the terminal device receives a first type of SSB within the first frequency range, it can read the common subcarrier spacing information from the MIB information in the first type of PBCH. For example, the terminal device can determine the position of CORESET#0, the initial BWP, and the unit size of resource allocation (such as the size of the PRB) based on the common SCS. The MIB information in the first type of PBCH can indicate one of several SCSs. Figure 13 is used as an example for illustration below.

[0136] In Figure 13, frequency range 1 is greater than f0, and frequency range 2 is less than f0. Frequency range 1 is the first frequency range, and frequency range 2 is the second frequency range.

[0137] As shown in Figure 13, the MIB information in the first type of PBCH indicates a common SCS of 30kHz from three subcarrier spacings: 15kHz, 30kHz, and 60kHz. After reading the MIB information in the first type of PBCH, the terminal device determines the position of CORESET#0, the initial BWP, and resource allocation in units of PRBs with a common SCS of 30kHz.

[0138] When a terminal device receives a second type of SSB within the second frequency range, it then receives a second type of PBCH. Since there is no indication information for a common SCS, the common SCS can be determined according to predefined rules. This predefined common SCS can be the SCS of the second type of SSB. As shown in Figure 13, for a terminal device accessing the system from frequency range 2, the SSB's SCS can always be used as the common SCS. For example, in Figure 13, because the SSB's SCS = 30kHz, the common SCS = 30kHz.

[0139] In different frequency bands, terminal devices can read different MIB information based on SSB structures with different bandwidths. In the second frequency range (e.g., lower frequency bands or frequency bands for terminal devices with lower primary service capabilities) (typically with smaller system bandwidth), terminal devices can read only the basic MIB information in the second type PBCH within the smaller bandwidth. This may exclude certain flexible configurations and instead determine the configuration during the initial access process based on predefined parameters, such as the location and size of CORESET#0, the location and size of Initial BWP, and common SCS. This greatly simplifies the initial access process, allowing terminal devices to complete the initial access process within a very small bandwidth. This better supports low-bandwidth terminal devices such as low-end IoT terminal devices, reducing complexity and cost. In the first frequency range (e.g., high-frequency bands or frequency bands of terminal devices with high main service capabilities) (usually with a large system bandwidth), terminal devices can read basic MIB information in the first type PBCH within a large bandwidth, such as the location and size of CORESET#0, the location and size of the initial BWP, common SCS, etc., thereby improving the flexibility of system resource allocation in the initial access phase, improving the capacity and spectrum efficiency of the wireless system, and better adapting to various types of terminal devices and multiple service requirements.

[0140] The method embodiments of this application have been described in detail above. The apparatus embodiments of this application are described in detail below. 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 foregoing method embodiments.

[0141] Figure 14 is a schematic structural diagram of a network device 1400 provided in an embodiment of this application. The network device 1400 includes a transmitting unit 1410.

[0142] The transmitting unit 1410 is configured to transmit a first SSB. When the first SSB is transmitted within a first frequency range, the first SSB is a first type of SSB; when the first SSB is transmitted within a second frequency range, the first SSB is a second type of SSB. The first type of SSB and the second type of SSB satisfy one or more of the following: the period of the SSB burst of the first type of SSB is T1, the period of the SSB burst of the second type of SSB is T2, and T1 < T2; the synchronization grid width of the first type of SSB is F1, the synchronization grid width of the second type of SSB is F2, and F1 > F2; the first type of SSB includes W1 subcarriers in the frequency domain, the second type of SSB includes W2 subcarriers in the frequency domain, and W1 > W2.

[0143] In some embodiments, T1 and T2 satisfy: the minimum value of T2 = the minimum value of T1 × 2n, where n is an integer greater than 0.

[0144] In some embodiments, F1 and F2 satisfy: F1 = F2 × 2m, where m is an integer greater than 0.

[0145] In some embodiments, both the first type of SSB and the second type of SSB include an SS, and the SS includes a PSS and an SSS.

[0146] In some embodiments, the SS in the first type of SSB has a larger frequency domain bandwidth than the SS in the second type of SSB.

[0147] In some embodiments, the SS in the first type of SSB has a longer sequence length than the SS in the second type of SSB.

[0148] In some embodiments, the first type of SSB includes a first type of PBCH, the first type of PBCH occupies frequency domain resources across W1 subcarriers, the second type of SSB includes a second type of PBCH, and the second type of PBCH occupies frequency domain resources across W2 subcarriers.

[0149] In some embodiments, the SS in the first type of SSB is the same as the SS in the second type of SSB.

[0150] In some embodiments, the part of the first type of PBCH within W2 subcarriers is the same as the second type of PBCH, and the system information transmitted by the part of the first type of PBCH outside W2 subcarriers includes information that is not included in the system information transmitted by the second type of PBCH.

[0151] In some embodiments, the system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: information on the physical downlink control channel (PDCCH) transmission resources; information on the initial bandwidth portion; and information on the common subcarrier spacing.

[0152] In some embodiments, the information of the PDCCH transmission resource includes one or more of the following: the location information of the PDCCH transmission resource; and the size information of the PDCCH transmission resource.

[0153] In some embodiments, the PDCCH transmission resource is a first CORESET, which contains a PDCCH search space containing scheduling system information.

[0154] In some embodiments, the PDCCH search space is a Type 0 PDCCH public search space.

[0155] In some embodiments, the first CORESET is CORESET number 0.

[0156] In some embodiments, the information of the initial bandwidth portion includes one or more of the following: location information of the initial bandwidth portion; size information of the initial bandwidth portion.

[0157] In some embodiments, the initial bandwidth portion includes one or more of the following: the first downlink BWP activated after cell search; the first uplink BWP activated after cell search.

[0158] In some embodiments, the common subcarrier spacing includes one or more of the following: the subcarrier spacing used during system information transmission; the subcarrier spacing used during initial access; and the subcarrier spacing used during random access.

[0159] In some embodiments, the common subcarrier spacing is used to determine the location of the PDCCH transmission resources and / or the location of the initial bandwidth portion.

[0160] In some embodiments, the first frequency range is higher than the second frequency range.

[0161] In an optional embodiment, the transmitting unit 1410 may be a transceiver 1630. The network device 1400 may also include a processor 1610 and a memory 1620, as shown in FIG16.

[0162] Figure 15 is a schematic structural diagram of a terminal device 1500 provided in an embodiment of this application. The terminal device 1500 includes a receiving unit 1510.

[0163] The receiving unit 1510 receives a first SSB; wherein, the first SSB is a first type of SSB or a second type of SSB, the first type of SSB is for a first frequency range, and the second type of SSB is for a second frequency range; wherein, the first type of SSB and the second type of SSB satisfy one or more of the following: the period of the SSB burst of the first type of SSB is T1, the period of the SSB burst of the second type of SSB is T2, and T1 < T2; the synchronization grid width of the first type of SSB is F1, the synchronization grid width of the second type of SSB is F2, and F1 > F2; the first type of SSB includes W1 subcarriers in the frequency domain, the second type of SSB includes W2 subcarriers in the frequency domain, and W1 > W2.

[0164] In some embodiments, T1 and T2 satisfy: the minimum value of T2 = the minimum value of T1 × 2n, where n is an integer greater than 0.

[0165] In some embodiments, F1 and F2 satisfy: F1 = F2 × 2m, where m is an integer greater than 0.

[0166] In some embodiments, both the first type of SSB and the second type of SSB include an SS, and the SS includes a PSS and an SSS.

[0167] In some embodiments, the SS in the first type of SSB has a larger frequency domain bandwidth than the SS in the second type of SSB.

[0168] In some embodiments, the SS in the first type of SSB has a longer sequence length than the SS in the second type of SSB.

[0169] In some embodiments, the first type of SSB includes a first type of PBCH, the first type of PBCH occupies frequency domain resources across W1 subcarriers, the second type of SSB includes a second type of PBCH, and the second type of PBCH occupies frequency domain resources across W2 subcarriers.

[0170] In some embodiments, the SS in the first type of SSB is the same as the SS in the second type of SSB.

[0171] In some embodiments, the part of the first type of PBCH within W2 subcarriers is the same as the second type of PBCH, and the system information transmitted by the part of the first type of PBCH outside W2 subcarriers includes information that the system information transmitted by the second type of PBCH does not include.

[0172] In some embodiments, the terminal device 1500 is further configured to:

[0173] When the terminal device accesses from the second type of SSB, the configuration related to the information included in the system information transmitted by the first type of PBCH and not included in the system information transmitted by the second type of PBCH is determined using predefined parameters.

[0174] In some embodiments, the system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: information on the physical downlink control channel (PDCCH) transmission resources; information on the initial bandwidth portion; and information on the common subcarrier spacing.

[0175] In some embodiments, the information of the PDCCH transmission resource includes one or more of the following: the location information of the PDCCH transmission resource; and the size information of the PDCCH transmission resource.

[0176] In some embodiments, the PDCCH transmission resource is a first CORESET, which contains a PDCCH search space containing scheduling system information.

[0177] In some embodiments, the PDCCH search space is a Type 0 PDCCH public search space.

[0178] In some embodiments, the first CORESET is CORESET number 0.

[0179] In some embodiments, the information of the initial bandwidth portion includes one or more of the following: location information of the initial bandwidth portion; size information of the initial bandwidth portion.

[0180] In some embodiments, the initial bandwidth portion includes one or more of the following: the first downlink BWP activated after cell search; the first uplink BWP activated after cell search.

[0181] In some embodiments, the common subcarrier spacing includes one or more of the following: the subcarrier spacing used during system information transmission; the subcarrier spacing used during initial access; and the subcarrier spacing used during random access.

[0182] In some embodiments, the common subcarrier spacing is used to determine the location of the PDCCH transmission resources and / or the location of the initial bandwidth portion.

[0183] In some embodiments, the first frequency range is higher than the second frequency range.

[0184] In an optional embodiment, the receiving unit 1510 may be a transceiver 1630. The terminal device 1500 may also include a processor 1610 and a memory 1620, as shown in FIG16.

[0185] Figure 16 is a schematic structural diagram of a communication apparatus according to an embodiment of this application. The dashed lines in Figure 16 indicate that the unit or module is optional. The apparatus 1600 can be used to implement the methods described in the above method embodiments. The apparatus 1600 can be a chip, a terminal device, or a network device.

[0186] Apparatus 1600 may include one or more processors 1610. The processor 1610 may support apparatus 1600 in implementing the methods described in the preceding method embodiments. The processor 1610 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.

[0187] The apparatus 1600 may further include one or more memories 1620. The memories 1620 store a program that can be executed by the processor 1610, causing the processor 1610 to perform the methods described in the preceding method embodiments. The memories 1620 may be independent of the processor 1610 or integrated within the processor 1610.

[0188] The device 1600 may also include a transceiver 1630. The processor 1610 can communicate with other devices or chips via the transceiver 1630. For example, the processor 1610 can send and receive data with other devices or chips via the transceiver 1630.

[0189] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0190] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0191] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] In the embodiments of this application, "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" mentioned in the embodiments of this application can be replaced with "indicating" or "used to determine". For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B".

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireless communication method, characterized in that, include: The network device transmits a first synchronization signal / physical broadcast channel block (SSB); wherein, when the first SSB is transmitted within a first frequency range, the first SSB is a first type SSB, and when the first SSB is transmitted within a second frequency range, the first SSB is a second type SSB; the first type SSB and the second type SSB satisfy one or more of the following: The burst period of the first type of SSB is T1, and the burst period of the second type of SSB is T2, and T1 <T2; The synchronization grid width of the first type of SSB is F1, and the synchronization grid width of the second type of SSB is F2, and F1>F2; The first type of SSB contains W1 subcarriers in the frequency domain, and the second type of SSB contains W2 subcarriers in the frequency domain, where W1 > W2.

2. The method according to claim 1, characterized in that, T1 and T2 satisfy the condition that the minimum value of T2 = the minimum value of T1 × 2n, where n is an integer greater than 0.

3. The method according to claim 1 or 2, characterized in that, F1 and F2 satisfy: F1 = F2 × 2m, where m is an integer greater than 0.

4. The method according to any one of claims 1-3, characterized in that, Both the first type SSB and the second type SSB include a synchronization signal SS, which includes a primary synchronization signal PSS and a secondary synchronization signal SSS.

5. The method according to any one of claims 1-4, characterized in that, The SS in the first type of SSB has a larger frequency domain bandwidth than the SS in the second type of SSB.

6. The method of claim 5, wherein, The SS in the first type of SSB has a longer sequence length than the SS in the second type of SSB.

7. The method according to any one of claims 1 to 6, characterized in that, The first type of SSB includes a first type of physical broadcast channel (PBCH), the frequency domain resources occupied by the first type of PBCH spanning W1 subcarriers, and the second type of SSB includes a second type of PBCH, the frequency domain resources occupied by the second type of PBCH spanning W2 subcarriers.

8. The method of claim 7, wherein, The SS in the first type of SSB is the same as the SS in the second type of SSB.

9. The method according to claim 7 or 8, characterized in that, The portion of the first type PBCH within W2 subcarriers is the same as that of the second type PBCH, while the portion of the first type PBCH outside W2 subcarriers transmits system information that does not include the system information transmitted by the second type PBCH.

10. The method of claim 9, wherein, The system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: Physical Downlink Control Channel (PDCCH) transmits information about resources; Information regarding the initial bandwidth portion; Information about the common subcarrier spacing.

11. The method of claim 10, wherein, The information of the PDCCH transmission resource includes one or more of the following: the location information of the PDCCH transmission resource; the size information of the PDCCH transmission resource.

12. The method according to claim 10 or 11, characterized in that, The PDCCH transmission resource is a first control resource set CORESET, which contains a PDCCH search space containing scheduling system information.

13. The method of claim 12, wherein, The PDCCH search space is a Type 0 PDCCH public search space.

14. The method according to claim 12 or 13, characterized in that, The first CORESET is CORESET number 0.

15. The method according to any one of claims 10-14, characterized in that, The information of the initial bandwidth portion includes one or more of the following: the location information of the initial bandwidth portion; the size information of the initial bandwidth portion.

16. The method according to any one of claims 10-15, characterized in that, The initial bandwidth portion includes one or more of the following: The first downlink bandwidth portion (BWP) activated after cell search; The first uplink BWP activated after cell search.

17. The method according to any one of claims 10-16, characterized by, The common subcarrier spacing includes one or more of the following: Subcarrier spacing used in system information transmission; Subcarrier spacing used during initial access; The subcarrier spacing used during random access.

18. The method according to claim 16 or 17, characterized in that The common subcarrier spacing is used to determine the location of the PDCCH transmission resources and / or the location of the initial bandwidth portion.

19. The method of any one of claims 1-18, wherein, The first frequency range is higher than the second frequency range.

20. A method of wireless communication, comprising: include: The terminal device receives the first synchronization signal / physical broadcast channel block (SSB); Wherein, the first SSB is either a first type SSB or a second type SSB, the first type SSB is for a first frequency range, and the second type SSB is for a second frequency range; Wherein, the first type SSB and the second type SSB satisfy one or more of the following: The burst period of the first type of SSB is T1, and the burst period of the second type of SSB is T2, and T1 <T2; The synchronization grid width of the first type of SSB is F1, and the synchronization grid width of the second type of SSB is F2, and F1>F2; The first type of SSB contains W1 subcarriers in the frequency domain, and the second type of SSB contains W2 subcarriers in the frequency domain, where W1 > W2.

21. The method of claim 20, wherein, T1 and T2 satisfy the condition that the minimum value of T2 = the minimum value of T1 × 2n, where n is an integer greater than 0.

22. The method of claim 20 or 21, wherein, F1 and F2 satisfy: F1 = F2 × 2m, where m is an integer greater than 0.

23. The method of any one of claims 20-22, wherein, Both the first type SSB and the second type SSB include a synchronization signal SS, which includes a primary synchronization signal PSS and a secondary synchronization signal SSS.

24. The method of any one of claims 20-23, wherein, The SS in the first type of SSB has a larger frequency domain bandwidth than the SS in the second type of SSB.

25. The method of claim 24, wherein, The SS in the first type of SSB has a longer sequence length than the SS in the second type of SSB.

26. The method of any one of claims 20-25, wherein, The first type of SSB includes a first type of physical broadcast channel (PBCH), the frequency domain resources occupied by the first type of PBCH spanning W1 subcarriers, and the second type of SSB includes a second type of PBCH, the frequency domain resources occupied by the second type of PBCH spanning W2 subcarriers.

27. The method of claim 26, wherein, The SS in the first type of SSB is the same as the SS in the second type of SSB.

28. The method of claim 26 or 27, wherein, The portion of the first type PBCH within W2 subcarriers is the same as that of the second type PBCH, while the portion of the first type PBCH outside W2 subcarriers transmits system information that does not include the system information transmitted by the second type PBCH.

29. The method according to claim 28, characterized in that, Also includes: When the terminal device accesses from the second type of SSB, the terminal device uses predefined parameters to determine the configuration related to information included in the system information transmitted by the first type of PBCH but not included in the system information transmitted by the second type of PBCH.

30. The method according to claim 28 or 29, characterized in that, The system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: Physical Downlink Control Channel (PDCCH) transmits information about resources; Information regarding the initial bandwidth portion; Information about the common subcarrier spacing.

31. The method according to claim 30, characterized in that, The information of the PDCCH transmission resource includes one or more of the following: the location information of the PDCCH transmission resource; the size information of the PDCCH transmission resource.

32. The method according to claim 30 or 31, characterized in that, The PDCCH transmission resource is a first control resource set CORESET, which contains a PDCCH search space containing scheduling system information.

33. The method according to claim 32, characterized in that, The PDCCH search space is a Type 0 PDCCH public search space.

34. The method according to claim 32 or 33, characterized in that, The first CORESET is CORESET number 0.

35. The method according to any one of claims 30-34, characterized in that, The information of the initial bandwidth portion includes one or more of the following: the location information of the initial bandwidth portion; the size information of the initial bandwidth portion.

36. The method according to any one of claims 30-35, characterized in that, The initial bandwidth portion includes one or more of the following: The first downlink bandwidth portion (BWP) activated after cell search; The first uplink BWP activated after cell search.

37. The method according to any one of claims 30-36, characterized in that, The common subcarrier spacing includes one or more of the following: Subcarrier spacing used in system information transmission; Subcarrier spacing used during initial access; The subcarrier spacing used during random access.

38. The method according to claim 36 or 37, characterized in that, The common subcarrier spacing is used to determine the location of the PDCCH transmission resources and / or the location of the initial bandwidth portion.

39. The method according to any one of claims 20-38, characterized in that, The first frequency range is higher than the second frequency range.

40. A network device, characterized in that, include: The transmitting unit is used to transmit the first synchronization signal / physical broadcast channel block (SSB). Wherein, when the first SSB is transmitted within a first frequency range, the first SSB is a first type SSB; when the first SSB is transmitted within a second frequency range, the first SSB is a second type SSB; the first type SSB and the second type SSB satisfy one or more of the following: The burst period of the first type of SSB is T1, and the burst period of the second type of SSB is T2, and T1 <T2; The synchronization grid width of the first type of SSB is F1, and the synchronization grid width of the second type of SSB is F2, and F1>F2; The first type of SSB contains W1 subcarriers in the frequency domain, and the second type of SSB contains W2 subcarriers in the frequency domain, where W1 > W2.

41. The network device according to claim 40, characterized in that, T1 and T2 satisfy the condition that the minimum value of T2 = the minimum value of T1 × 2n, where n is an integer greater than 0.

42. The network device according to claim 40 or 41, characterized in that, F1 and F2 satisfy: F1 = F2 × 2m, where m is an integer greater than 0.

43. The network device according to any one of claims 40-42, characterized in that, Both the first type SSB and the second type SSB include a synchronization signal SS, which includes a primary synchronization signal PSS and a secondary synchronization signal SSS.

44. The network device according to any one of claims 40-43, characterized in that, The SS in the first type of SSB has a larger frequency domain bandwidth than the SS in the second type of SSB.

45. The network device according to claim 44, characterized in that, The SS in the first type of SSB has a longer sequence length than the SS in the second type of SSB.

46. ​​The network device according to any one of claims 40-45, characterized in that, The first type of SSB includes a first type of physical broadcast channel (PBCH), the frequency domain resources occupied by the first type of PBCH spanning W1 subcarriers, and the second type of SSB includes a second type of PBCH, the frequency domain resources occupied by the second type of PBCH spanning W2 subcarriers.

47. The network device according to claim 46, characterized in that, The SS in the first type of SSB is the same as the SS in the second type of SSB.

48. The network device according to claim 46 or 47, characterized in that, The portion of the first type PBCH within W2 subcarriers is the same as that of the second type PBCH, while the portion of the first type PBCH outside W2 subcarriers transmits system information that does not include the system information transmitted by the second type PBCH.

49. The network device according to claim 48, characterized in that, The system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: Physical Downlink Control Channel (PDCCH) transmits information about resources; Information regarding the initial bandwidth portion; Information about the common subcarrier spacing.

50. The network device according to claim 49, characterized in that, The information of the PDCCH transmission resource includes one or more of the following: the location information of the PDCCH transmission resource; the size information of the PDCCH transmission resource.

51. The network device according to claim 49 or 50, characterized in that, The PDCCH transmission resource is a first control resource set CORESET, which contains a PDCCH search space containing scheduling system information.

52. The network device according to claim 51, characterized in that, The PDCCH search space is a Type 0 PDCCH public search space.

53. The network device according to claim 51 or 52, characterized in that, The first CORESET is CORESET number 0.

54. The network device according to any one of claims 49-53, characterized in that, The information of the initial bandwidth portion includes one or more of the following: the location information of the initial bandwidth portion; the size information of the initial bandwidth portion.

55. The network device according to any one of claims 49-54, characterized in that, The initial bandwidth portion includes one or more of the following: The first downlink bandwidth portion (BWP) activated after cell search; The first uplink BWP activated after cell search.

56. The network device according to any one of claims 49-55, characterized in that, The common subcarrier spacing includes one or more of the following: Subcarrier spacing used in system information transmission; Subcarrier spacing used during initial access; The subcarrier spacing used during random access.

57. The network device according to claim 55 or 56, characterized in that, The common subcarrier spacing is used to determine the location of the PDCCH transmission resources and / or the location of the initial bandwidth portion.

58. The network device according to any one of claims 40-57, characterized in that, The first frequency range is higher than the second frequency range.

59. A terminal device, characterized in that, include: The receiving unit is used to receive the first synchronization signal / physical broadcast channel block (SSB). Wherein, the first SSB is either a first type SSB or a second type SSB, the first type SSB is for a first frequency range, and the second type SSB is for a second frequency range; Wherein, the first type SSB and the second type SSB satisfy one or more of the following: The burst period of the first type of SSB is T1, and the burst period of the second type of SSB is T2, and T1 <T2; The synchronization grid width of the first type of SSB is F1, and the synchronization grid width of the second type of SSB is F2, and F1>F2; The first type of SSB contains W1 subcarriers in the frequency domain, and the second type of SSB contains W2 subcarriers in the frequency domain, where W1 > W2.

60. The terminal device according to claim 59, characterized in that, T1 and T2 satisfy the condition that the minimum value of T2 = the minimum value of T1 × 2n, where n is an integer greater than 0.

61. The terminal device according to claim 59 or 60, characterized in that, F1 and F2 satisfy: F1 = F2 × 2m, where m is an integer greater than 0.

62. The terminal device according to any one of claims 59-61, characterized in that, Both the first type SSB and the second type SSB include a synchronization signal SS, which includes a primary synchronization signal PSS and a secondary synchronization signal SSS.

63. The terminal device according to any one of claims 59-62, characterized in that, The SS in the first type of SSB has a larger frequency domain bandwidth than the SS in the second type of SSB.

64. The terminal device according to claim 63, characterized in that, The SS in the first type of SSB has a longer sequence length than the SS in the second type of SSB.

65. The terminal device according to any one of claims 59-64, characterized in that, The first type of SSB includes a first type of physical broadcast channel (PBCH), the frequency domain resources occupied by the first type of PBCH spanning W1 subcarriers, and the second type of SSB includes a second type of PBCH, the frequency domain resources occupied by the second type of PBCH spanning W2 subcarriers.

66. The terminal device according to claim 65, characterized in that, The SS in the first type of SSB is the same as the SS in the second type of SSB.

67. The terminal device according to claim 65 or 66, characterized in that, The portion of the first type PBCH within W2 subcarriers is the same as that of the second type PBCH, while the portion of the first type PBCH outside W2 subcarriers transmits system information that does not include the system information transmitted by the second type PBCH.

68. The terminal device according to claim 67, characterized in that, The terminal device is also used for: When the terminal device accesses from the second type of SSB, the configuration related to the information included in the system information transmitted by the first type of PBCH and not included in the system information transmitted by the second type of PBCH is determined using predefined parameters.

69. The terminal device according to claim 67 or 68, characterized in that, The system information transmitted by the first type of PBCH includes information that the system information transmitted by the second type of PBCH does not include, including one or more of the following: Physical Downlink Control Channel (PDCCH) transmits information about resources; Information regarding the initial bandwidth portion; Information about the common subcarrier spacing.

70. The terminal device according to claim 69, characterized in that, The information of the PDCCH transmission resource includes one or more of the following: the location information of the PDCCH transmission resource; the size information of the PDCCH transmission resource.

71. The terminal device according to claim 69 or 70, characterized in that, The PDCCH transmission resource is a first control resource set CORESET, which contains a PDCCH search space containing scheduling system information.

72. The terminal device according to claim 71, characterized in that, The PDCCH search space is a Type 0 PDCCH public search space.

73. The terminal device according to claim 71 or 72, characterized in that, The first CORESET is CORESET number 0.

74. The terminal device according to any one of claims 69-73, characterized in that, The information of the initial bandwidth portion includes one or more of the following: the location information of the initial bandwidth portion; the size information of the initial bandwidth portion.

75. The terminal device according to any one of claims 69-74, characterized in that, The initial bandwidth portion includes one or more of the following: The first downlink bandwidth portion (BWP) activated after cell search; The first uplink BWP activated after cell search.

76. The terminal device according to any one of claims 69-75, characterized in that, The common subcarrier spacing includes one or more of the following: Subcarrier spacing used in system information transmission; Subcarrier spacing used during initial access; The subcarrier spacing used during random access.

77. The terminal device according to claim 75 or 76, characterized in that, The common subcarrier spacing is used to determine the location of the PDCCH transmission resources and / or the location of the initial bandwidth portion.

78. The terminal device according to any one of claims 59-77, characterized in that, The first frequency range is higher than the second frequency range.

79. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 1-19.

80. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 20-39.

81. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-39.

82. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-39.

83. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-39.

84. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-39.

85. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-39.

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