Wireless communication method, terminal device and network device

Abstract

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device receiving configuration information sent by a network device, the configuration information comprising a plurality of SSB configurations for transmitting SSBs; and thus. The configuration information sent by the network equipment to the terminal equipment comprises a plurality of SSB configurations used for transmitting the SSB, so that different SSB transmission requirements are met, and network energy conservation is facilitated while the SSB requirements are ensured.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal equipment and network equipment. Background Art

[0002] In order to support network energy saving (NES), on-demand transmission of synchronization signal block / physical broadcast channel block (SS / PBCH block, SSB) is proposed. Therefore, how to effectively implement on-demand transmission of SSB has become a problem that needs to be solved. Summary of the invention

[0003] The present application provides a wireless communication method, terminal equipment and network equipment. The following introduces various aspects involved in the present application.

[0004] In a first aspect, a method for wireless communication is provided, comprising: a terminal device receives configuration information sent by a network device, wherein the configuration information includes multiple SSB configurations for transmitting SSB.

[0005] According to a second aspect, a method for wireless communication is provided, comprising: a network device sends configuration information to a terminal device, wherein the configuration information comprises a plurality of SSB configurations for transmitting SSB.

[0006] According to a third aspect, a terminal device is provided, comprising: a transceiver unit for receiving configuration information sent by a network device, wherein the configuration information comprises multiple SSB configurations for transmitting SSB.

[0007] In a fourth aspect, a network device is provided, comprising: a receiving unit, configured to send configuration information to a terminal device, wherein the configuration information comprises multiple SSB configurations for transmitting SSB.

[0008] In a fifth aspect, a terminal device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the terminal device executes the method described in the first aspect.

[0009] In a sixth aspect, a network device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method described in the second aspect.

[0010] In a seventh aspect, a device is provided, comprising a processor, configured to call a program from a memory so that the device executes a method as described in any one of the first aspect or the second aspect.

[0011] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0013] In a tenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In an eleventh aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In an embodiment of the present application, the configuration information sent by the network device to the terminal device includes multiple SSB configurations for transmitting SSB to meet different SSB transmission requirements, which is beneficial to network energy saving while ensuring SSB requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a diagram showing an example of a system architecture of a wireless communication system applicable to an embodiment of the present application.

[0017] Figure 2 Schematic diagram of SSB burst.

[0018] Figure 3 Schematic diagram of different periods during the activation of the secondary cell.

[0019] Figure 4 Figure 1 is a schematic diagram of a normal SSB cycle.

[0020] Figure 5 A flowchart of a wireless communication method according to an embodiment of the present application is shown.

[0021] Figure 6 This is a schematic diagram of configuring different SSB periods for different time periods during the secondary cell activation process.

[0022] Figure 7 This is a schematic diagram when the SSB cycle is short.

[0023] Figure 8 A schematic diagram of a terminal device requesting activation of SSB transmission via an uplink wake-up signal.

[0024] Fig. 9 Schematic diagram of the first time position where SSB starts transmission.

[0025] Fig.10 A schematic diagram of the structure of a terminal device according to an embodiment of the present application.

[0026] Fig.11 A schematic diagram of the structure of a network device according to an embodiment of the present application.

[0027] Fig.12 A schematic diagram of a device for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0029] Wireless communication system

[0030] Figure 1 1 is an example diagram of the system architecture of a wireless communication system 100 to which an embodiment of the present application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide network coverage for a specific geographical area, and may communicate with the terminal device 120 located in the coverage area. The terminal device 120 may access a network, such as a wireless network, through the network device 110. 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 the embodiment of the present application.

[0031] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in the present application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0032] In the embodiments of the present application, the terminal device may 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 the embodiments of the present application may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device may also be a mobile phone, a tablet computer, a laptop, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the terminal device may be used to act as a base station. For example, the terminal device may act as a dispatching entity that provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D). For example, a cellular phone and a car communicate with each other using a sidelink signal. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0033] In an embodiment of the present application, a network device may be a device for communicating with a terminal device. The network device may be an access network device or a wireless access network device. For example, the network device may be a base station. The base station may broadly cover the following various names, or may be replaced with the following names, for example: Node B (NodeB), evolved NodeB (evolved NodeB, eNB), next generation NodeB (next generation NodeB, gNB), relay station, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), master station (MeNB), auxiliary station (SeNB), multi-standard wireless (MSR) node, home base station, network controller, access node, wireless node, access point (access point, AP), transmission node, transceiver node, baseband unit (base band unit, BBU), remote radio unit (remote radio unit, RRU), active antenna unit (active antenna unit, AAU), radio head (remote radiohead, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc. The base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station may also refer to a communication module, a modem or a chip used to be arranged in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device to device D2D, vehicle-to-everything (V2X), a device that performs the base station function in machine-to-machine (M2M) communications, a network-side device in a 6G network, and a device that performs the base station function in future communication systems. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network equipment. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network equipment.

[0034] In addition, the base station 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 according to the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device for communicating with another base station.

[0035] In some deployments, the network device may refer to a CU or a DU; or, the network device includes a CU and a DU. The gNB may also include an AAU.

[0036] The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network equipment and terminal equipment are located.

[0037] It should be understood that all or part of the functions of the communication device in the present application may also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform such as a cloud platform.

[0038] Carrier aggregation (CA)

[0039] In order to meet the peak rate of a single terminal device and improve system capacity, CA technology can be used to increase the transmission bandwidth of the system. Using the existing network spectrum, CA technology enables operators to provide higher uplink (UL) and downlink (DL) data rates, thereby improving network performance and ensuring a high-quality user experience.

[0040] In 4G LTE, 2-5 LTE component carriers or component carriers (CCs) can be aggregated together to achieve a higher transmission bandwidth, such as a maximum transmission bandwidth of 100 MHz, thereby effectively improving the uplink and downlink transmission rates. Figure 2 As shown, five 20MHz carriers can be aggregated to form a 100MHz transmission bandwidth. The terminal device can decide how many carriers can be used simultaneously for uplink and downlink transmission based on its capabilities.

[0041] 5G New Radio (NR) is rooted in 4G LTE and Wi-Fi standards. It is a new RF interface and RF access network that uses the best technologies and methods in the LTE system to meet the new requirements of various standardization organizations. CA technology has made an important contribution to improving user data throughput in the LTE system and will play an equally important role in the 5G system. In order to increase capacity, operators around the world are actively adding CA bands and functions.

[0042] After the CA technology was introduced from the 4G LTE Advanced protocol, it was initially an aggregation of 5 carriers, each with a bandwidth of 20MHz, and the total bandwidth after the 5 carriers were aggregated was 100MHz. Later, it developed to the aggregation of 32 carriers, and the total bandwidth after aggregation can reach 640MHz. With the development of communication technology, the number of carriers that can be aggregated in 5G systems has gradually increased to 16, and the bandwidth of each carrier is larger. The bandwidth of a single carrier in the Sub6G system is up to 100MHz, so that 16 carriers can be aggregated to form a bandwidth of 1.6GHz. The bandwidth of a single carrier in the millimeter wave band is up to 400MHz, so that 16 carriers can be aggregated to form a bandwidth of 6.4GHz.

[0043] As mentioned above, when multiple carriers are aggregated together to work, they need to cooperate with each other. Therefore, these carriers are divided into main carriers and auxiliary carriers. Among them, the main carrier is used to carry signaling and manage other carriers. The main carrier can also be called the primary cell (PCell). The auxiliary carrier is used to expand the bandwidth and enhance the rate. The main carrier can decide when to add and delete. The auxiliary carrier can also be called the secondary cell (SCell). The main and auxiliary carriers are relative to the terminal equipment. For different terminal equipment, the main carrier and auxiliary carrier used for their work may be different. In addition, the multiple carriers involved in the aggregation may not be limited to the same base station. For example, these carriers can come from adjacent base stations.

[0044] SSB

[0045] In the NR system, each SSB is used for initial access and synchronization. The SSB consists of three parts: primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH). For example, Figure 4 As shown in the SSB structure, SSB occupies a total of 4 OFDM symbols in the time domain and a total of 240 subcarriers, i.e., 20 physical resource blocks (PRBs), which are numbered from 0 to 239, in the frequency domain.

[0046] SSB is transmitted by beam scanning. Usually, multiple SSBs need to be sent in a cell to complete a beam scan so that the SSB covers the service range of the entire cell. The SSBs required to complete a beam scan can form an SSB burst, or an SSB burst set. Generally, the transmission configuration of the SSB burst in time, frequency or spatial domain can be described by the SSB burst pattern. As an example, Figure 2 The SSB beam scan and the time domain distribution of the SSB burst are shown, where Figure 2 (a) shows the spatial beam that transmits each SSB, Figure 2 (b) in FIG. 1 shows the time domain position of each SSB. In different frequency bands and configurations, the pattern of the SSB burst may be different. For example, in different frequency bands, the maximum number of SSBs that may be included in an SSB burst may be 4, 8, 64, etc., and different SSBs have different SSB indexes. Figure 2 It is taken as an example that an SSB burst includes 8 SSB indexes, namely SSB 0 to SSB 7.

[0047] The terminal device can obtain synchronization through the SSB sent by the primary cell and perform radio resource management (RRM) measurements. In order to save time and frequency resources and network power consumption, SSB may not be transmitted in the secondary cell. However, as services are widely used in CA scenarios, measurement, T / F synchronization, secondary cell activation, and multiple processes on the secondary cell require SSB, and the secondary cell may also have SSB transmission.

[0048] Since the transmission of SSB by the terminal device will generate higher energy consumption, for the purpose of energy saving, SSB should not be transmitted all the time in the secondary cell, but should be transmitted on demand. In other words, the network equipment can configure SBB to be transmitted for a short time, that is, the SSB transmission on the secondary cell is only performed for a period of time, for example, it can be determined according to the needs of the terminal device. Such SSB can be called on-demand SSB (OD SSB), and such a secondary cell can be called a secondary cell without SSB. In some implementations, a secondary cell without SSB can be defined as a secondary cell that does not provide SSB related parameters and does not provide SSB measurement timing configuration (SMTC) configuration, wherein the SSB related parameters include, for example, the absolute frequency SSB in FrequencyInfoDL IE, ssb-PositionsInBurst in ServingCellConfigCommon IE, SSB periodic serving cell and subcarrier spacing, etc.

[0049] On-demand SSB can be configured based on a serving cell (e.g., a secondary cell) or based on a bandwidth part (BWP). To support on-demand SSB, a terminal device may expect SSB transmission in at least the following SSB transmission scenarios.

[0050] Example 1 (case 1): SSB transmission on demand, that is, SSB transmission is not always enabled, which may include the following scenarios:

[0051] SSB transmission scenario 2: before the terminal device receives the secondary cell activation signaling (or the secondary cell activation command), for example, Figure 3 As shown, scenario 2 includes the period from receiving the secondary cell configuration information to receiving the secondary cell activation signaling;

[0052] SSB transmission scenario 2A: The terminal device receives the secondary cell activation signaling;

[0053] SSB transmission scenario 3A: After the terminal device receives the secondary cell activation signaling;

[0054] SSB transmission scenario 3B: after the secondary cell activation is completed.

[0055] Example 2: SSB transmission is always enabled, which can include the following scenarios:

[0056] SSB transmission scenario 3A: After the terminal device receives the secondary cell activation signaling.

[0057] The detailed description of the above scenarios can be found in Table 1.

[0058] Table 1

[0059]

[0060] As an example, Figure 3 There are four scenarios shown, among which scenario 2 includes the period from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; scenario 2A is the moment when the terminal device receives the secondary cell activation signaling, that is, the moment when the secondary cell is activated; scenario 3A is the period from when the terminal device receives the secondary cell activation signaling to when the secondary cell activation is completed, that is, the entire activation duration of the secondary cell; scenario 3B is after the secondary cell activation is completed.

[0061] In frequency range (FR) 2, such as Figure 4As shown in the figure, each terminal device's receive (Rx) beam requires about 4 rounds of SSB burst transmission, of which 2 rounds are used for AGC stabilization, 1 round is used for synchronization, and 1 round is for L1 measurement. Assuming that a typical FR2 terminal device is equipped with 8 receive beams, the secondary cell activation requires about 32 rounds of SSB bursts, and the period of the SSB burst is 20ms, which will result in an activation delay of 640ms. Therefore, such a large delay will force the network equipment to remain active for a long time, making it unable to transmit data as quickly as possible and enter a deeper sleep mode.

[0062] To this end, an embodiment of the present application provides a method for wireless communication, in which the configuration information sent by a network device to a terminal device includes multiple SSB configurations for transmitting SSB to meet different SSB transmission requirements, which is beneficial to network energy saving while ensuring SSB requirements.

[0063] Combine the following Figure 5 , the embodiments of the present application are introduced in detail.

[0064] Figure 5 A flowchart of a wireless communication method provided in an embodiment of the present application. Figure 5 The method 500 shown can be executed by a terminal device and a network device, the terminal device is for example Figure 1 The terminal device 120 shown in FIG. 1 , the network device is, for example, Figure 1 A network device 110 is shown.

[0065] See also Figure 5 , in step 510, the network device sends configuration information to the terminal device.

[0066] Accordingly, in step 520, the terminal device receives the configuration information sent by the network device.

[0067] The configuration information includes multiple SSB configurations for transmitting SSB. The configuration information may be carried in the configuration information of the secondary cell, for example; or, the configuration information may be carried in the secondary cell activation signaling, for example, carried in the media access control (MAC) signaling; or, the configuration information may also be sent to the terminal device independently of the above information, for example, carried in the radio resource control (RRC) signaling, MAC signaling (for example, MAC CE), multicast signaling or broadcast signaling that is independent of the above information transmission and sent to the terminal device, and the multicast signaling and the broadcast signaling may be, for example, high-layer signaling.

[0068] The network device may provide two or more SSB configurations (i.e., candidate SSB configurations) for the terminal device, and indicate the target SSB configuration for the terminal device to receive the SSB through, for example, dynamic signaling, etc., and the terminal device may receive the SSB based on the target SSB configuration. The network device may indicate different SSB configurations as target SSB configurations to the terminal device at different times, or the terminal device may receive the SSB using different SSB configurations at different times based on an agreement. Different SSB configurations may, for example, be targeted at terminal devices with different requirements (e.g., measurement requirements, mobility requirements, traffic requirements, etc.).

[0069] The SSB described in the embodiments of the present application may be called an on-demand SSB, for example. The SSB may be, for example, the SSB of a secondary cell. The following describes in detail the content of the SSB configuration, the activation of the SSB configuration, the activation of the SSB transmission, the time of the SSB transmission, and other aspects. Among them, the activation of the SSB configuration refers to the activation of the target SSB configuration that the terminal device needs to use among multiple SSB configurations, and the activation of the SSB transmission refers to the activation of the SSB transmission. After the SSB transmission is activated, the terminal device needs to receive the SSB sent by the network device when the SSB transmission is activated based on the activated target SSB configuration. The receiving SSB described in the embodiments of the present application may also be regarded as SSB monitoring, SSB measurement, SSB detection, etc.

[0070] Contents of SSB configuration

[0071] In some implementations, the multiple SSB configurations include configurations of multiple periods for transmitting SSBs. The multiple periods are associated with one or more of the following: the multiple periods are associated with a secondary cell activation process of a terminal device; the multiple periods are associated with SSB bursts; the multiple periods are associated with beams. Each of the above is described below.

[0072] Multiple cycles of SSB are associated with the secondary cell activation process of the terminal equipment

[0073] Generally, the secondary cell activation process includes multiple time periods, which include, for example, one or more of the following: a first time period, from receiving the secondary cell configuration information to receiving the secondary cell activation signaling, that is, Figure 3 The second period is from the receipt of the secondary cell activation signaling to the completion of the secondary cell activation, that is, Figure 3 The third period is after the secondary cell activation is completed, that is, Figure 3 The time period corresponding to scene 3B shown in FIG.

[0074] In order to speed up the activation of the secondary cell, an SSB configuration with a shorter period (or dense mode) and an SSB with a longer period (or sparse mode) can be designed. Different SSB configurations can be used to implement different functions, thereby achieving greater scheduling flexibility, better terminal experience and greater network energy saving gains. In this embodiment, different SSB configurations, such as different periods, can be used for different time periods of the secondary cell activation process of the terminal device.

[0075] As an example, the multiple cycles include a first cycle, a second cycle and a third cycle, the first cycle is used to transmit SSB in the above-mentioned first time period, the second cycle is used to transmit SSB in the above-mentioned second time period, and the third cycle is used to transmit SSB in the above-mentioned third time period. The length of the first cycle, the length of the second cycle, and the length of the third cycle may be the same, partially different, or completely different. For example, the length of the first cycle may be greater than the length of the second cycle, and the length of the third cycle may be between the length of the first cycle and the length of the second cycle. For another example, the length of the first cycle is greater than the length of the second cycle and the length of the third cycle. That is, by configuring different SSB cycles for different time periods of the secondary cell activation process. As an example, Figure 6 As shown, the first time period is from when the terminal device receives the secondary cell configuration information to when it receives the secondary cell activation signaling, and SSB is used for L3 measurement to evaluate the appropriate secondary cell that needs to be activated for the terminal device, while providing more sleep opportunities for the secondary cell, so a longer period, namely the first period (for example, 160ms), can be used. In the second time period, that is, during the activation duration of the secondary cell, the network device instructs the terminal device to use a shorter period, namely the second period (for example, 5ms or shorter), to speed up the activation of the secondary cell. In the third time period, that is, after the secondary cell is activated, the network device instructs the terminal device to receive SSB based on the normal period, namely the third period (for example, 20ms), to achieve a trade-off between reliable beam management and network energy saving.

[0076] When configuring and / or activating the secondary cell, the period of SSB transmission can be switched between three different periods according to the network status and the period of cell activation. Assume that the multiple SSB configurations include SSB configuration #1, SSB configuration #2, and SSB configuration #3, SSB configuration #1 corresponds to the first period, SSB configuration #2 corresponds to the second period, and SSB configuration #3 corresponds to the third period, and the first period> the second period> the third period. The three periods may or may not have an integer multiple relationship. The following describes the possible relationship between the first period, the second period, and the third period. Here, the length of the first period is denoted as T1, T2 is the length of the second period denoted as T2, and the length of the third period is denoted as T3.

[0077] Relationship 1: T1=n1*T3=n2*T2, where n1 and n2 are positive integers.

[0078] T1 can be an integer multiple of T3, so that when the secondary cell enters the energy-saving state, the long-period SSB can be effectively aligned with the short-period SSB. T1 can also be an integer multiple of T2, so that in the measurement period before the secondary cell is activated, the network device can decide whether to enter the secondary cell activation period based on the shorter-period SSB according to the L3 measurement result. Therefore, before the secondary cell is activated, the network device sends SSB based on the long period T1. Since the frequency of SSB transmission is low at this time, it is suitable for evaluating the appropriate cell that needs to be activated for the terminal device, and at the same time, it reduces the signal transmission frequency of the secondary cell, which is beneficial to network energy saving; when the secondary cell is activated, when the network device detects that the L3 measurement of the terminal device is completed and there is an activation requirement, the network device switches to the short period T2 to speed up the activation process of the secondary cell. At this time, the SSB transmission frequency is very fast, which is suitable for fast secondary cell activation and communication recovery; after the secondary cell is activated, once the secondary cell activation is completed, the network device can switch from T2 to T3 to maintain beam management and network stability. At this time, the period of SSB is moderate, which can not only maintain reliable beam management, but also save energy consumption caused by frequent signal transmission.

[0079] Relationship 2: T1 = α1 × T3 + β1; T2 = α2 × T3 + β2, where α1, α2, β1 and β2 are preset values.

[0080] α1 and α2 can be regarded as proportional factors, and β1 and β2 can be regarded as time offsets, indicating incomplete synchronization between cycles. For example, T1 is longer than T3, but the relationship between the two is a non-integer multiple relationship, which is determined by α1 and β1. T2 is shorter and is suitable for rapid response to secondary cell activation, but T2 also has an offset of β2 that is not synchronized with T3.

[0081] Multiple cycles of SSB are associated with SSB bursts

[0082] Multiple cycles of SSB are associated with SSB bursts, for example, different transmission times have different cycles for transmitting SSB bursts. For example, the different times may be times with different network loads and / or times with different quality of service (QoS). As an example, when the network load is high, the cycle for transmitting SSB bursts is reduced, and when the network load is low, the cycle for transmitting SSB bursts is increased; for another example, when the QoS requirements of the service are high, the cycle for transmitting SSB bursts is reduced, and when the QoS requirements of the service are not high, the cycle for transmitting SSB bursts is increased.

[0083] Taking the above-mentioned first time period and third time period as an example, the period of SSB in the third time period is the third period, and the third period can have multiple values. For example, in addition to the above-mentioned 20ms, it may be shorter (for example, including 2ms, 5ms, etc.). Similarly, the period of SSB in the first time period is the first period, and the first period can also have multiple values. For example, when the network load is high, the length of the third period is reduced, and when the network load is low, the length of the first period and / or the third period is increased; for another example, when the QoS requirements of the service are high, the length of the third period is reduced, and when the QoS requirements of the service are not high, the length of the first period and / or the third period is increased.

[0084] Based on the above description, the embodiment provides a more flexible SSB configuration, provides diversified services during the life cycle of the secondary cell, and activates the corresponding SSB configuration for the terminal device when the terminal device needs to implement a certain function. With the configuration and / or activation process of the secondary cell, multiple SSB configurations (i.e., candidate SSB configurations) can be provided to the terminal device through, for example, RRC signaling, and an SSB configuration (i.e., target SSB configuration) can be dynamically activated in the primary cell through L1 / layer 2 (L2) signaling. For example, Figure 7 As shown in FIG. 1 , if intensive SSB transmission is required (for example, the SSB period is 2 ms), the delay of secondary cell activation can be reduced by hundreds of milliseconds. The saved time can help the secondary cell enter a deeper sleep mode after the data transmission is completed. Under the same setting, the delay can be reduced from Figure 4 640ms in the Figure 7 The 64ms in the delay time allows network devices to enter sleep mode earlier after data transmission is completed. In addition to maintaining the energy-saving gain of network devices, it is also beneficial to the transmission rate of terminal devices.

[0085] Here, it can be considered that a period of less than 5ms is conducive to the acceleration of secondary cell activation. Typically, the transmission of SSB bursts is limited to half a frame (5ms), and its actual transmission window is less than 5ms. By defining a smaller period (for example, less than 5ms), not only network energy is saved, but also the power of the terminal device to activate the secondary cell is reduced. In addition, SSB transmission with a smaller period may not be suitable for the primary cell or idle terminal devices, because the terminal device needs to frequently detect potential SSBs for initial access. Therefore, the multiple SSB configurations described in the implementation of this application may be for the secondary cell.

[0086] Ssb-PositionsInBurst is an RRC parameter that provides more refined time domain information for the traditional periodically transmitted SSB by selecting candidate beams on a predefined pattern using a bitmap. The embodiment of the present application can reuse this parameter to indicate the SSB position in the SSB burst to reduce the complexity of implementation. However, for on-demand SSB, especially for secondary cells, its efficiency may be low, because compared with the blind search of SSB in the main cell, the terminal equipment of the secondary cell is ready to process the SSB in a short time, and by allowing the network equipment to indicate the SSB position that the terminal equipment can use in the SSB burst, the benefits are maximized. Although the period of SSB and the SSB position in the SSB burst (i.e., ssb-PositionsInBurst) are part of the existing RRC signaling, for the transmission of on-demand SSB, especially for the secondary cell, the transmission of SSB does not occur on a fixed periodic basis, but can be performed on demand according to network load, terminal equipment request, signal quality and other conditions, and directly reusing these parameters may be inefficient.

[0087] To this end, the relevant parameters can be optimized in the embodiments of the present application. Among them, the period described above can be, for example, the transmission for SSB bursts, that is, the transmission period of SSB bursts. In the embodiments of the present application, the time intervals between SSBs corresponding to different SSB indexes in the SSB burst can also be flexibly designed. In one implementation, multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in the SSB burst. Optionally, the position of the SSB index in the SSB burst can be determined based on the following formula: ti=t0+i*Δt; wherein ti is the position corresponding to the SSB index i, t0 is the position corresponding to the SSB index 0, i is the SSB index, and Δt is the time interval. Different values ​​of Δt will result in different time intervals between adjacent SSB indexes in the SSB burst, so that the transmission of SSB can be flexibly switched between compact mode and sparse mode. It can be understood that the SSB index described in the embodiments of the present application refers to the SSB represented by the SSB index in the SSB burst.

[0088] For example, when Δt is large, the distribution of SSB bursts is sparse, which is suitable for low-power scenarios; when Δt is small, the distribution of SSB bursts is compact, which is suitable for high-frequency task processing or scenarios where network synchronization is completed quickly. This flexible time domain position control can improve the resource utilization and power consumption efficiency of the network. As an example, Δt can be dynamically adjusted based on the network load, and the network device sets a dynamic adjustment algorithm based on the network load. For example, when the load drops by 10%, Δt is increased by 10ms; when the load increases by 10%, Δt is shortened by 10ms. The network device can select the value of Δt based on the network load and the request of the terminal device. It can be seen that if the load is low, switch to a larger Δt in time; if the load is high or the terminal device has urgent business needs, switch to a smaller Δt.

[0089] The above describes the case where multiple SSB configurations include configurations of different periods, and the case where multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst. In addition, in other implementations, the SSB configuration described in the embodiment of the present application may also include other content. At this time, the other content in the multiple SSB configurations provided by the network device to the terminal device may also be different. For example, one or more of the following information in the multiple SSB configurations is different: the frequency corresponding to the SSB; the SSB position in the SSB burst; the period of the SSB; the subcarrier spacing of the SSB; the physical cell identifier of the SSB; the position of the SSB burst; the downlink transmission power of the SSB; the number of transmissions of the SSB burst; the information associated with the transmission start time after the SSB is activated; the index of the SSB configuration. Among them, the frequency information of the SSB can be used to determine the position of the frequency domain resources occupied by the SSB. For example, the frequency corresponding to the SSB can be FR2 or FR1, or the frequency corresponding to the SSB can be a certain bandwidth. The SSB position in the SSB burst refers to the content indicated by ssb-PositionsInBurst, which is used to locate the SSB in the SSB burst.

[0090] Multiple cycles of SSB are associated with the beam

[0091] The embodiments of the present application can also optimize the design of the SSB period at the beam level. For example, the period of the SSB burst in each beam direction can be adjusted according to the traffic demand in the direction of different beam bets. As an example, when the traffic in a certain direction is small, the SSB bursts can be distributed more sparsely to reduce unnecessary beam transmissions. In this mode, the SSB bursts are distributed in a longer time interval, which can reduce the consumption of transmission resources and is suitable for low load or scenarios where signal quality does not need to be optimized urgently; in the beam direction with high traffic, the SSB bursts can be compactly distributed to ensure that the terminal device can quickly obtain synchronization information. It is used in situations where specific tasks need to be accelerated, such as high-priority signal transmission or frequent secondary cell activation. In this mode, the distribution of SSB bursts is relatively tight, allowing terminal devices to quickly capture SSB signals and respond.

[0092] Assume that the period corresponding to each beam is indicated by MAC CE. The terminal device can process the SSB in the corresponding direction according to the period indicated by the MAC CE. Alternatively, for a beam of a specific secondary cell, a more refined time domain indication can be provided through DCI. Through DCI, the network device can indicate the period for transmitting SSB, especially when frequent secondary cell-related operations are required in a short period of time, indicating the corresponding period through DCI can achieve a faster response. Among them, the DCI may, for example, include an indication field of an SSB position, indicating the period of the SSB burst, or the position or gap of the next SSB transmission. Further, the RRC parameter (for example, ssb-PositionsInBurst) can be used to further define the position of the SSB index in the SSB burst by means of, for example, a bitmap, or the bitmap can be extended to associate it with different beams, for example, the interval between adjacent indexes in the SSB burst on a beam is small, and the distribution of the SSB index is a compact mode, while the interval between adjacent indexes in the SSB burst on another beam is large, and the distribution of the SSB index is a sparse mode. At the same time, in addition, RRC parameters can also provide support for different frequency domain resources and transmission power in SSB configuration.

[0093] In some implementations, the network device sends an SSB to the terminal device based on a target beam in a plurality of beams, and accordingly, the terminal device receives the SSB sent by the network device based on the target beam in the plurality of beams. The plurality of beams are associated with a plurality of periods for transmitting the SSB. Here, the target beam may include one or more beams. That is, the SSB may be transmitted for a beam in a specific direction (e.g., a target beam).

[0094] The SSB in 5G NR is usually broadcast in different beam directions to cover different areas of the entire cell. The SSB in the embodiment of the present application can be a dynamic, event-driven SSB transmission mechanism, that is, on-demand SSB. Different from the SSB that is always based on periodic transmission, on-demand SSB can selectively send SSB to certain beams according to network requirements or terminal device requests, without the need to broadcast SSB simultaneously on multiple beams as in the related art.

[0095] The network device can dynamically select a beam to transmit SSB based on the needs, location, signal quality and other information of the terminal device. This is usually based on the network device's analysis of the terminal device's uplink feedback information (e.g., beam report, channel quality indication (CQI) etc.). When the terminal device is in a specific direction or area, the network device can send SSB to the terminal device for the beam corresponding to the location of the terminal device, without having to send it in all beam directions.

[0096] In a multi-carrier (i.e., CA) or multi-cell (i.e., cell merging) scenario, the terminal device may need to activate a specific secondary cell. At this time, the network device can send SSB on the beam in the corresponding direction of the terminal device to help the terminal device synchronize to the secondary cell. In some scenarios, for example, when the terminal device performs connection recovery (RRC resume) or inter-cell handover (handover, HO), the network device can selectively send SSB to the terminal device on one or several beams based on the location information of the terminal device to help the terminal device complete rapid synchronization. The network device can explicitly instruct the terminal device to pay attention to the SSB transmitted on one or several specific beams, and send SSB bursts in the direction of the beam.

[0097] The periods for transmitting SSB on beams in different directions may be different, that is, different SSB periods may be set for beams in different directions. As an example, taking beam A, beam B, and beam C as an example, beam A may need to cover areas with higher traffic, so the SSB period may be shorter (for example, 20ms); beam B covers areas with lower traffic, and the SSB period may be longer (for example, 100ms); beam C is used to serve temporary hotspot areas, and may only send SSB when user demand is detected (for example, the period can be adjusted dynamically). For example, SSB transmission can be triggered based on specific events, such as when a new terminal device is detected to be connected or the network status changes.

[0098] In this way, beams in different directions can flexibly adjust the SSB transmission period according to user density, service quality requirements or other network factors, thereby reducing signal redundancy and improving resource efficiency. The SSB transmission period of each beam can be configured on the network side through RRC signaling and scheduled accordingly on the terminal device side.

[0099] The above-mentioned multiple SSB configurations may include configurations of multiple beams, wherein the configuration of each beam may include, for example, one or more of the following: beam identifier; SSB period; field for adjusting the SSB period. Among them, the beam identifier is used to identify the beam; the SSB period is the SSB period set for the corresponding beam (for example, 20ms, 40ms, 100ms), etc.; the field for adjusting the SSB period is an optional field, which is set for the case where the period corresponding to each beam can be dynamically adjusted. For example, the network device can dynamically change the period of different beams when the network load changes. As an example, during low traffic periods, the SSB period of all beams can be lengthened to save resources; for another example, in high traffic areas in cities, the beams of network devices may need to transmit SSB more frequently to ensure that newly connected users can synchronize in time. In suburban or low traffic areas, network devices may use longer periods to reduce the transmission frequency of SSB, thereby saving network resources. In temporary high-density hotspots such as stadiums or concerts, some beams of network devices may need to dynamically adjust their corresponding SSB periods.

[0100] Activation of SSB configuration

[0101] In some implementations, the network device may send first information to the terminal device; accordingly, the terminal device receives the first information sent by the network device, wherein the first information is used to activate a target SSB configuration among multiple SSB configurations.

[0102] The first information may be carried in, for example, downlink control information (DCI) or a media access control element (MAC CE), or may be carried in other specific signaling.

[0103] For a secondary cell supporting on-demand SSB transmission, multiple SSB configurations may be provided, for example, through RRC signaling, where the multiple SSB configurations have different indexes, such as SSB configuration #0, SSB configuration #1, SSB configuration #2, etc. If multiple SSB configurations (i.e., candidate SSB configurations) are provided to a terminal device, it is necessary to indicate to the terminal device through first information the target SSB configuration to be used among the multiple SSB configurations, and the first information is carried in, for example, MAC CE or DCI. In order to implement the above process, the terminal device needs to support the following transmissions:

[0104] Supports RRC-based transmission, which can be used to carry multiple SSB configurations or to indicate the index of the target SSB configuration used for SSB transmission on the secondary cell;

[0105] Supporting MAC CE-based transmission, which can be used to indicate the index of the target SSB configuration used for SSB transmission on the secondary cell, for example, used to indicate the target SSB configuration used for SSB transmission in scenario #2 and scenario #2A; and,

[0106] Supports DCI-based transmission, which can be used to indicate the index of the target SSB configuration used for SSB transmission on the secondary cell, wherein the DCI may not provide an indication of activation / deactivation of the secondary cell, for example, and it can be a specific DCI for the terminal device or a group-general DCI for a group of terminal devices including the terminal device.

[0107] Multiple SSB configurations are designed to reduce the periodic broadcast of SSBs, and SSBs are transmitted only when needed. DCI is used to indicate which SSB configuration among the multiple SSB configurations needs to be activated. DCI can be used to indicate a target SSB configuration that is specific to the terminal device or common to the group. The DCI format includes control information for downlink or uplink resource allocation, which can be sent to the terminal device via a physical downlink control channel (PDCCH). Depending on the purpose, DCI has different formats, for example, DCI format 1_0 is used for downlink scheduling, DCI format 0_1 ​​is used for uplink scheduling, etc. The DCI carrying the first information can be a terminal device-specific DCI, which is identified by a temporary wireless network identifier (RNTI). Each terminal device has a unique cell RNTI (CellRNTI, C-RNTI), so when a network device sends a DCI with a C-RNTI, only the terminal device can recognize and decode the control information. The DCI includes index information of the target SSB configuration in multiple SSB configurations, such as SSB configuration #0, SSB configuration #1, SSB configuration #2, etc., thereby activating the target SSB configuration. The terminal device will receive this DCI and decode and process the SSB based on the information of the index of the target SSB configuration carried in the DCI. Alternatively, a group-common DCI can be used to send the first information using a specific group RNTI (such as P-RNTI, SI-RNTI, RA-RNTI, etc.). Multiple terminal devices in a group can receive and decode this DCI. The network device configures the same SSB parameters for the group of terminal devices. When SSB transmission is required, the network device sends a DCI including the group RNTI. The terminal devices in the group receive the SSB according to the target SSB configuration index specified in the DCI. After receiving the DCI, the group of terminal devices decodes and processes the SSB based on the information of the SSB configuration index in the DCI. In the DCI, the index of the target SSB configuration is represented, for example, in a specific field.

[0108] SSB can be used for L3 measurement of terminal equipment. When there is a measurement requirement, how to receive SSB can be determined based on RRC signaling and MAC CE, for example, RRC signaling indicates multiple SSB configurations and / or MAC CE indicates the index of the target SSB configuration. Here, for the secondary cell supporting on-demand SSB, the RRC signaling carrying multiple SSB configurations may be the RRC signaling used to configure the secondary cell, that is, configuring the secondary cell is the same as sending multiple SSB configurations related to the SSB; or, multiple SSB configurations may be carried in the signaling used to activate the secondary cell, that is, sending multiple SSB configurations related to the SSB when the secondary cell is activated. A preferred method is to provide multiple SSB configurations through RRC signaling, indicate the target SSB configuration for receiving SSB in multiple SSB configurations through MAC CE, and activate the transmission of SSB through MAC CE or DCI, wherein the activation of SSB transmission is introduced at a later position.

[0109] When transmitting an SSB burst, the network device indicates the index of the target SSB configuration used through the first information (for example, carried on DCI or MAC CE), so that the terminal device can determine the time position of the next SSB burst and prepare to receive the SSB at this time position. Optionally, the period for transmitting SSB in the SSB configuration activated by DCI can be less than the period for transmitting SSB in the SSB configuration activated by MAC CE. In other words, the longer SSB period is activated by DCI, and the shorter period is activated by MAC CE. Specifically, if indicated by DCI, the DCI may include a field for indicating the index of the target SSB configuration used for transmission in the current SSB burst, wherein, due to the faster response speed of DCI, when the target SSB configuration includes a shorter SSB period, it can be indicated by DCI so that the terminal device can switch to the shorter SSB period as soon as possible, such as using the shorter SSB period to complete the activation of the secondary cell as soon as possible after receiving the secondary cell activation signaling; accordingly. When the target SSB configuration includes a longer SSB period, it can be indicated by MACCE. Since DCI and MAC CE can be indicated for a specific terminal device, the terminal device only needs to perform corresponding SSB detection according to the target SSB configuration indicated by the network device, and selectively decode, without blindly detecting all possible SSB positions, which reduces power consumption, and can adapt to different task requirements, such as energy-saving tasks or fast SSB detection tasks, by flexibly adjusting the SSB configuration used during the transmission of the SSB burst.

[0110] In some implementations, the MAC CE carrying the first information may include one or more of the following fields:

[0111] A field for carrying the index of a target SSB, which is used to indicate the index of the target SSB configuration that needs to be activated (e.g., SSB configuration #0, SSB configuration #1, SSB configuration #2), so that the terminal device knows which SSB configuration among multiple SSB configurations needs to be used to receive the SSB;

[0112] A field for indicating the transmission timing of SSB, which is used to indicate the actual transmission timing of SSB (e.g., the symbol, time slot number, frame number, etc. where SSB is located) to ensure that the terminal device can monitor SSB in the correct time period;

[0113] A field used to indicate the duration of SSB. This field is used to indicate how long the SSB transmission needs to last so that the terminal device knows how long it needs to listen to the SSB. The unit of the SSB duration can be, for example, a symbol, a time slot, or a subframe.

[0114] As an example, in the format of the MAC CE for carrying the first information, the field for carrying the index of the target SSB may include 4 bits, with possible values ​​ranging from 0 to 15, representing different SSB configurations, and different SSB configurations are sent to the terminal device in, for example, the RRC configuration stage; the field for indicating the transmission timing of the SSB may include 6 bits, for example, it may indicate the offset of the SSB transmission position relative to a certain position (the unit is, for example, a symbol, a time slot, or a subframe), and a 6-bit field may represent 64 time units, which indicates the transmission timing of the SSB with sufficiently fine granularity. The field for indicating the duration of the SSB includes 4 bits, and 4 bits can represent 16 durations, such as 0 to 15 symbols, time slots, or subframes. In addition, the MAC CE may also include an N-bit reserved field to facilitate future expansion and compatibility, such as reserving N bits for subsequent standardization or other functions.

[0115] In 5G NR, the activation / deactivation of the secondary cell can be achieved through MAC CE. Usually, the MAC CE used to activate / deactivate the secondary cell includes 1 bit to indicate whether a secondary cell is activated. For example, if the bit is 1, it means that the secondary cell is activated, and if the bit is 0, it means that the secondary cell is deactivated. Since MAC CE is transmitted based on the PDU of the MAC layer and does not rely on the RRC signaling of the higher layer, it is more suitable for scenarios that require a quick response. In order to support the transmission of SSB on demand, especially for the scenario before the secondary cell is activated (for example, the first time period above), a new MAC CE needs to be designed to indicate the target SSB configuration that needs to be activated among multiple SSB configurations.

[0116] In some implementations, the MAC CE used to carry the first information is encoded in the same manner as the MAC CE used to activate the secondary cell. In this way, the MAC CE used to carry the first information can be kept consistent with the MAC CE used to activate the secondary cell, so that the MAC layer of the terminal device can perform flexible parsing. If the MAC CE used to activate the secondary cell is indicated by one bit per secondary cell, the MAC CE used to carry the first information can add an additional bit field to indicate details related to SSB transmission.

[0117] In the case of scenario #2A, the network can simultaneously send a MAC CE for carrying the first information and a MAC CE for secondary cell activation / deactivation. In this case, the network needs to coordinate the signaling processing of the MAC layer to ensure that there is no conflict between the two MAC CEs.

[0118] In some implementations, the MAC CE carrying the first information and the MAC CE for activating the secondary cell are carried in the same MAC PDU or in different MAC PDUs. Among them, when the MAC CE carrying the first information and the MAC CE for activating the secondary cell are carried in the same MAC PDU, this parallel transmission can ensure that the target SSB configuration can be triggered on demand while the secondary cell is activated. MAC PDU usually has a "Type" field for identifying different MAC CE types. For the newly introduced MAC CE for indicating the target SSB configuration, a new Type value can be defined to identify that the MACCE is a MAC CE related to SSB. Or when sending the MAC CE for secondary cell activation / deactivation and the MAC CE for carrying the first information at the same time, consider setting different priorities for the two MAC CEs. For example, in some implementations, the priority of the MAC CE for activating the secondary cell is higher than the priority of the MAC CE carrying the first information. Because the transmission of SSB may take effect only after the secondary cell is activated.

[0119] As an example, the secondary cell of the terminal device can be first activated through a MAC CE for indicating activation / deactivation of the secondary cell, and then the target SSB configuration is indicated through the first information carried in the MAC CE, thereby triggering SSB transmission, thereby ensuring that the SSB transmission can be correctly processed when the secondary cell is in an activated state. The structure of the MAC PDU allows multiple MAC CEs to be packaged and parsed in sequence. The network device can schedule a MAC PDU through the PDCCH, which includes two MAC CEs: the first MAC CE is used to activate a secondary cell; the second MAC CE is used to indicate the target SSB configuration, thereby triggering SSB transmission. The terminal device receives and parses the MAC PDU, first activates the secondary cell according to the MAC CE for activating the secondary cell, and then monitors the specified SSB according to the target SSB configuration carried by the MAC CE carrying the first information.

[0120] Activate SSB transmission

[0121] SSB transmission can be triggered by the terminal device or the network device.

[0122] For example, in some implementations, SSB transmission is activated based on one or more of the following: second information sent by the network device; the network device is turned on as an access point or a backhaul relay switch; the terminal device sends third information to the network device.

[0123] Optionally, the gNB CU can request the gNB DU to activate certain SSB beams by indicating the SSB index and can confirm whether it is available for SSB triggering on the F1 interface.

[0124] The above-mentioned second information is used to indicate the activation of SSB transmission. The second information can be carried in, for example, DCI or MAC CE. For example, the second information can be carried in the above-mentioned MAC CE used to carry the first information, that is, when the network device activates the target SSB configuration in multiple SSB configurations, it also activates the transmission of SSB; or, the second information can also be transmitted independently of the first information, and the terminal device will first receive the first information sent by the network device to determine the target SSB configuration, and then receive the SSB based on the target SSB configuration when receiving the second information. In addition, optionally, the second information can also be carried in the signaling used to indicate the activation or deactivation of the secondary cell. That is to say, the second information is transmitted simultaneously with the signaling used for activating or deactivating the secondary cell. Taking the secondary cell activation signaling as an example, if the second information is carried with the MAC CE, the MAC CE and the MAC CE carrying the secondary cell activation signaling can be located in the same MAC PDU. Optionally, the MAC CE carrying the secondary cell activation signaling has a higher priority than the MAC CE carrying the second information. In this way, the terminal device can determine the transmission of the activated SSB while activating the secondary cell; alternatively, the second information can also be transmitted independently of the secondary cell activation signaling. The terminal device will first receive the secondary cell activation signaling sent by the network device, and start to activate the secondary cell, and perform SSB reception after receiving the second information.

[0125] The third information is used to request activation of SSB transmission, that is, the terminal device can request the network device to send SSB for it based on its own needs. For example, the third information can be a wake-up signal sent by the terminal device, also known as an uplink wake-up signal (UL wake up signal, UL WUS).

[0126] In some implementations, the third information may be triggered based on the following conditions: the received signal strength of a reference cell associated with a secondary cell of the terminal device is less than a first threshold; and / or the time difference between the downlink reception timing of the secondary cell and the reference cell is greater than a second threshold.

[0127] For example, Figure 8As shown, taking the third information as a UL WUS signal as an example, the terminal device sends a UL WUS signal to the primary cell to request the secondary cell to send an SSB, or directly sends a UL WUS signal to the secondary cell to request to send an SSB. The resource configuration information of the UL WUS signal can be allocated by the primary cell, or the secondary cell can pre-set the resource configuration information. Optionally, when the received signal strength from a reference cell associated with the secondary cell is lower than a given threshold (for example, determined by a predefined rule or configured by a higher-layer parameter), the sending of the UL WUS signal can be triggered. Optionally, when the difference between the DL reception timing difference between the secondary cell and its associated reference cell is greater than a given threshold, or in other words, the relevant conditions for DL ​​reception timing are met (for example, round trip delay (RTD) ≤ 3usec), the sending of the UL WUS signal can be triggered to trigger the sending of the SSB. Figure 8 In the process, the terminal device of the secondary cell sends a UL WUS signal to the network device, and the network device sends feedback information (for example, ACK response information), and then triggers the SSB sending of the secondary cell. Of course, the network device may not send feedback information, but directly send SSB.

[0128] In some implementations, the third information may be carried in one or more of the following: a physical random access channel (PRACH); a message MSG 3 in a random access channel (RACH) process; a periodic or semi-static PUCCH; or a periodic or semi-static physical uplink shared channel (PUSCH).

[0129] The third information may be transmitted during the RACH process. For example, for PRACH, it may be considered to configure a PRACH resource dedicated to triggering SSB of a specific secondary cell. In this case, since the PRACH is dedicated to triggering SSB transmission, there is no need to transmit the PUSCH carrying MAG 3 subsequently; or, the terminal device of the secondary cell may request SSB transmission through the PUSCH carrying MAG 3, for example, by using a bitmap. For scheduling request (SR) PUCCH, similar to the case of PRACH, it may be considered to configure a dedicated SR resource to trigger SSB transmission of a specific secondary cell. In this case, no subsequent PUSCH transmission is required; or, SR resources associated with multiple secondary cells may be configured. In this case, the SR resources for SSB transmission requested by the terminal device of the secondary cell may be indicated by the next scheduled PUSCH, for example, by using a bitmap. For periodic or semi-static PUCCH / PUSCH, even if PUCCH / PUSCH resources are allocated to the terminal device, the terminal device may not use the allocated PUCCH / PUSCH resources unless SSB transmission is triggered. In other words, once SSB transmission is triggered for the secondary cell, the terminal device will transmit PUCCH / PUSCH related to the secondary cell by carrying the information necessary for SSB transmission on the secondary cell.

[0130] In some implementations, the terminal device starts receiving the SSB sent by the network device from a first time position. In other implementations, the terminal device stops receiving the SSB sent by the network device from a second time position. The first time position is separated from the reference time position by a first duration. For example, the interval between the first time position and the time position at which the second information is received is the first duration, or the interval between the first time position and the time position at which feedback information for the second information is sent is the first duration. That is, after receiving the second information indicating activation of SSB transmission, the terminal device intervals the first duration and then starts receiving SSB; or, after receiving the second information indicating activation of SSB transmission, the terminal device sends feedback information (e.g., HARQ-ACK) for the second information to the network device, and intervals the first duration after sending the feedback information, and then starts receiving SSB.

[0131] For activation of SSB transmission, one or more of the following conditions may be supported:

[0132] 1) The terminal device expects to periodically send SSB bursts from a first time position. The first time position may be determined based on a semi-statically configured period and offset, or notified to the terminal device through RRC signaling or a high-level protocol.

[0133] 2) The terminal device expects the SSB burst to be transmitted periodically from the first time position until the network device turns off the on-demand SSB. The network device can configure the terminal device to send SSB bursts periodically after the first time position through RRC signaling, and issue a shutdown signaling to turn off the SSB when necessary. The shutdown signaling can be implemented through uplink instructions or scheduling messages. The network device decides when to terminate the SSB transmission, for example, based on the shutdown conditions triggered by network load, secondary cell conditions, or terminal device behavior.

[0134] 3) The terminal device expects to transmit from the first time position to the second time position according to the SSB burst. The network device indicates the second time position through, for example, RRC configuration. The second time position may be, for example, a specific absolute time or relative time (for example, an offset relative to the first time position). The second time position may be, for example, implemented through a timer mechanism or a periodic time slot defined by the protocol. When the terminal device determines that it has reached the second time position, it automatically stops sending the SSB burst.

[0135] 4) The terminal device expects the SSB burst to be transmitted N times after the first time position. The network device can configure a counter that starts counting when the terminal device triggers the SSB transmission until it reaches N times. The counter mechanism can be sent by the network device and implemented by, for example, the MAC layer or the RRC layer. When the value recorded by the counter reaches N times, the terminal device stops receiving the SSB burst and waits for new instructions.

[0136] 5) The terminal device expects the SSB burst to be transmitted according to a period from the first time position to the second time position, and after the second time position, according to other periods. That is, after the second time position, the terminal device receives the SSB sent by the network device based on another period different from the period used before the second time position. Among them, two different periods can be configured in the RRC layer or the MAC layer, corresponding to the time period from the first time position to the second time position, and the time period after the second time position. The network device can define different periodic scheduling mechanisms according to the RRC configuration of the terminal device, and dynamically switch the period when reaching the second time position. This mechanism can be combined with the dynamic scheduling of SSB, and take into account factors such as network status and terminal device mobility.

[0137] In some implementations, the first time position may be: the starting position of an SSB burst; or, the starting position of the first SSB index in the candidate SSB indexes in the SSB burst; or, the starting position of the first SSB index actually transmitted in the SSB burst; or, the starting position of the first SSB index in the SSB burst. The unit of the first time position may be, for example, a time slot or a symbol. Taking the time slot as an example, the first time position may be the first time slot where the candidate SSB index (e.g., SSB index 0) is located in the SSB burst, or the first time position may be the first time slot where the first actually transmitted SSB index is located in the SSB burst, or the first time position may be the time slot of the first SSB index actually transmitted in the SSB burst.

[0138] like Fig. 9 As shown, it is assumed that the time position at which the terminal device receives the second information for indicating the activation of SSB transmission is T0, and the time position after the first duration T from T0 is the first time position (or time instance A). The value of T may be, for example, pre-agreed, or indicated and / or configured by the network device. The terminal device may determine the first time position based on the time of receiving the second information from the network device or the time of sending feedback information for the second information, and the value of T, thereby starting to receive SSB from the first time position. The value of T may take into account the delay in the RRC processing process (for example, the delay caused by uplink and downlink scheduling) or the timing of the terminal device receiving the uplink authorization, or the value of T may take into account the processing time of the second information by the terminal device. For example, if the second information is carried in a MAC CE, the value of T shall not be less than the time required for the terminal device to process the MAC CE. If the second information is carried in a MAC CE for activating a secondary cell, the value of T shall also take into account (for example, not less than) the time required for the terminal device to activate the secondary cell. After the duration T ends, as Fig. 9 As shown, the terminal device can start receiving the SSB burst at the first time position. Fig. 9 In the example, the units of T0, T, etc. are all time slots.

[0139] As an example, assuming that the unit is time slot, the value of T can be determined based on the following formula: m and The setting of can be set, for example, by considering the following times: the time when the terminal device receives the second information (for example, carried in the MAC CE) for indicating the activation of the SSB, the time when the terminal device processes the second information, and the time when the PUCCH for carrying the feedback information (HARQ-ACK) for the second information is sent. Fig. 9As shown, starting from T0, it is assumed that the MAC CE carrying the second information is transmitted on the physical downlink shared channel (PDSCH), and many PDSCH retransmissions or repetitions may occur before the terminal device can correctly decode the MAC CE. Therefore, T0 is defined as the end time of the MAC CE that activates SSB transmission. From the perspective of the terminal device, T0 is the end time of the MAC CE, or the time when the MAC CE is successfully received.

[0140] Optionally, the first time position may be the starting position corresponding to the SSB burst, i.e., the starting boundary (e.g., the starting time slot). Regarding the relationship between the first time position and the boundary of the SSB burst, the SSB is transmitted in a beam scanning manner, so its broadcast nature is based on an "SSB burst" to reach every direction within the cell coverage area. If the first time position is regarded as the beginning of a beam, it means that the network device indicates the SSB beam instead of the SSB burst to the terminal device. However, the indicated beam may not be the optimal beam, and the experience of the terminal device may be affected. If the first time position is regarded as the beginning of the SSB burst, the terminal device will have an overall view of the cell-level signal and can select the best beam based on the measurement results of various beams. Therefore, the first time position can be regarded as the time slot boundary of the SSB burst to be transmitted (e.g., the first time slot in which the SSB burst is located). As an example, the first time position is the time slot boundary of the first SSB time domain position in the on-demand SSB burst actually transmitted.

[0141] In some implementations, the second time position includes one or more of the following: a time position at which fourth information sent by a network device is received, the fourth information being used to indicate deactivation of SSB transmission; a time position at which a second time length is separated from the first time position at which SSB reception starts, the second time length may be, for example, agreed in advance, or configured or indicated by the network device; a time position at which a predetermined number of SSB transmissions are completed after the first time position, the predetermined number of times may be, for example, agreed in advance, or configured or indicated by the network device.

[0142] The second time position may be determined according to the SSB transmission situation. For example, the second time position may be the time when the terminal device successfully receives the secondary cell deactivation signaling (or the secondary cell deactivation command), or the time when the terminal device sends feedback information (for example, HARQ-ACK) in response to receiving the secondary cell deactivation signaling, or the time when the terminal device receives the signaling indicating that SSB transmission is unavailable, or the second time position is the time when the terminal device successfully completes the secondary cell activation (for example, the time when the terminal device sends a channel state information (CSI) report after receiving the secondary cell activation signaling).

[0143] Combination of the above Figures 1 to 9 , describes the method embodiment of the present application in detail, and the following is combined with Figures 10 to 12 , describes the device embodiment of the present application in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0144] Fig.10 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Fig.10 The terminal device 1000 shown may include a transceiver unit 1010. The transceiver unit 1010 is used as a transceiver unit, and is used to receive configuration information sent by a network device, wherein the configuration information includes multiple SSB configurations for transmitting SSBs of secondary cells, and the SSBs are on-demand SSBs.

[0145] In some implementations, the multiple SSB configurations include configurations of multiple periods for transmitting SSBs, and the multiple periods are associated with one or more of the following: the multiple periods are associated with a secondary cell activation process of the terminal device; the multiple periods are associated with SSB bursts; the multiple periods are associated with beams.

[0146] In some implementations, the secondary cell activation process includes multiple time periods, and the multiple time periods include one or more of the following: a first time period, from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; a second time period, from receiving the secondary cell activation signaling to the completion of the secondary cell activation; a third time period, after the secondary cell activation is completed.

[0147] In some implementations, the multiple cycles include a first cycle, a second cycle, and a third cycle, and the first cycle, the second cycle, and the third cycle are different; wherein the first cycle is used to transmit SSB in the first time period, the second cycle is used to transmit SSB in the second time period, and the third cycle is used to transmit SSB in the third time period.

[0148] In some implementations, the first period is greater than the second period, and the third period is located between the first period and the second period.

[0149] In some implementations, the first period, the second period, and the third period satisfy: T1=n1*T3=n2*T2; T1 is the length of the first period, T2 is the length of the second period, T3 is the length of the third period, and n1 and n2 are positive integers.

[0150] In some implementations, the first period, the second period, and the third period satisfy: T1=α1×T3+β1; T2=α2×T3+β2; wherein T1 is the length of the first period, T2 is the length of the second period, T3 is the length of the third period, and α1, α2, β1, and β2 are preset values.

[0151] In some implementations, the multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst.

[0152] In some implementations, the position of the SSB index in the SSB burst is: ti=t0+i*Δt; wherein ti is the position corresponding to the SSB index i, t0 is the position corresponding to the SSB index 0, i is the SSB index, and Δt is the time interval.

[0153] In some implementations, one or more of the following information in the multiple SSB configurations is different: the frequency corresponding to the SSB; the SSB position in the SSB burst; the period of the SSB; the subcarrier spacing of the SSB; the physical cell identifier of the SSB; the location of the SSB burst; the downlink transmit power of the SSB; the number of transmissions of the SSB burst; information associated with the transmission start time after the SSB is activated; and the index of the SSB configuration.

[0154] In some implementations, the transceiver unit 1010 is further used to: receive first information sent by the network device, where the first information is used to activate a target SSB configuration among the multiple SSB configurations.

[0155] In some implementations, the first information is carried in DCI or MAC CE.

[0156] In some implementations, a period for transmitting SSB in the SSB configuration activated by the DCI is smaller than a period for transmitting SSB in the SSB configuration activated by the MAC CE.

[0157] In some implementations, the MAC CE includes one or more of the following: a field for carrying the index of the target SSB; a field for indicating the transmission timing of the SSB; and a field for indicating the duration of the SSB.

[0158] In some implementations, the MAC CE carrying the first information is encoded in the same manner as the MAC CE used to activate the secondary cell; and / or the MAC CE carrying the first information and the MAC CE used to activate the secondary cell are carried on the same MAC PDU or on different MAC PDUs; and / or the priority of the MAC CE used to activate the secondary cell is higher than the priority of the MAC CE carrying the first information.

[0159] In some implementations, the DCI is a DCI for the terminal device; or, the DCI is a group common DCI for a group of terminal devices, and the group of terminal devices includes the terminal device.

[0160] In some implementations, SSB transmission is activated based on one or more of the following: second information sent by the network device, the second information is used to indicate activation of SSB transmission; the network device is turned on as an access point or a backhaul relay switch; the terminal device sends third information to the network device, the third information is used to request activation of SSB transmission.

[0161] In some implementations, the second information is signaling for indicating activation or deactivation of a secondary cell; and / or the third information is a wake-up signal sent by the terminal device.

[0162] In some implementations, the third information is triggered based on the following conditions: the received signal strength of a reference cell associated with the secondary cell of the terminal device is less than a first threshold; and / or the time difference between the downlink reception timing of the secondary cell and the reference cell is greater than a second threshold.

[0163] In some implementations, the third information is carried in one or more of the following: PRACH; message MSG 3 in the RACH process; periodic or semi-static PUCCH; periodic or semi-static PUSCH.

[0164] In some implementations, the transceiver unit 1010 is also used to: receive the SSB sent by the network device starting from a first time position, the interval between the first time position and the time position at which the second information is received is a first duration, or the interval between the first time position and the time position at which feedback information for the second information is sent is the first duration.

[0165] In some implementations, the first time position is: the starting position of the SSB burst; or, the starting position of the first SSB index among the candidate SSB indexes in the SSB burst; or, the starting position of the first SSB index actually transmitted in the SSB burst; or, the starting position of the first SSB index in the SSB burst.

[0166] In some implementations, the unit of the first time position is a time slot or a symbol.

[0167] In some implementations, the transceiver unit 1010 is also used to: stop receiving the SSB sent by the network device from a second time position, the second time position including one or more of the following: the time position when fourth information sent by the network device is received, the fourth information is used to indicate deactivation of SSB transmission; the time position with a second time interval between the first time position of starting to receive the SSB; the time position after a predetermined number of SSB transmissions are completed after the first time position.

[0168] In some implementations, the transceiver unit 1010 is further used to: after the second time position, based on another period different from the period used before the second time position, receive the SSB sent by the network device.

[0169] In some implementations, the transceiver unit 1010 is further used to: receive an SSB sent by the network device based on a target beam among multiple beams, where the multiple beams are associated with multiple periods for transmitting the SSB.

[0170] In some implementations, the multiple SSB configurations include configurations of the multiple beams, wherein the configuration of each beam includes one or more of: a beam identifier; a period of the SSB; and a field for adjusting the period of the SSB.

[0171] It can be understood that the transceiver unit 1010 may be, for example, a transceiver 1230. In addition, optionally, the terminal device 1000 further includes a processor 1210 and a memory 1220, for details, see Fig.12 .

[0172] Fig.11 A schematic diagram of the structure of a network device provided in an embodiment of the present application. Fig.11 The network device 1100 shown may include a transceiver unit 1110. The transceiver unit 1110 sends configuration information to the terminal device, where the configuration information includes a plurality of SSB configurations for transmitting an SSB of a secondary cell, where the SSB is an on-demand SSB.

[0173] In some implementations, the multiple SSB configurations include configurations of multiple periods for transmitting SSBs, and the multiple periods are associated with one or more of the following: the multiple periods are associated with a secondary cell activation process of the terminal device; the multiple periods are associated with SSB bursts; the multiple periods are associated with beams.

[0174] In some implementations, the secondary cell activation process includes multiple time periods, and the multiple time periods include one or more of the following: a first time period, from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; a second time period, from receiving the secondary cell activation signaling to the completion of the secondary cell activation; a third time period, after the secondary cell activation is completed.

[0175] In some implementations, the multiple cycles include a first cycle, a second cycle, and a third cycle, and the first cycle, the second cycle, and the third cycle are different; wherein the first cycle is used to transmit SSB in the first time period, the second cycle is used to transmit SSB in the second time period, and the third cycle is used to transmit SSB in the third time period.

[0176] In some implementations, the first period is greater than the second period, and the third period is located between the first period and the second period.

[0177] In some implementations, the first period, the second period, and the third period satisfy: T1=n1*T3=n2*T2; T1 is the length of the first period, T2 is the length of the second period, T3 is the length of the third period, and n1 and n2 are positive integers.

[0178] In some implementations, the first period, the second period, and the third period satisfy: T1=α1×T3+β1; T2=α2×T3+β2; wherein T1 is the length of the first period, T2 is the length of the second period, T3 is the length of the third period, and α1, α2, β1, and β2 are preset values.

[0179] In some implementations, the multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst.

[0180] In some implementations, the position of the SSB index in the SSB burst is: ti=t0+i*Δt; wherein ti is the position corresponding to the SSB index i, t0 is the position corresponding to the SSB index 0, i is the SSB index, and Δt is the time interval.

[0181] In some implementations, one or more of the following information in the multiple SSB configurations is different: the frequency corresponding to the SSB; the SSB position in the SSB burst; the period of the SSB; the subcarrier spacing of the SSB; the physical cell identifier of the SSB; the location of the SSB burst; the downlink transmit power of the SSB; the number of transmissions of the SSB burst; information associated with the transmission start time after the SSB is activated; and the index of the SSB configuration.

[0182] In some implementations, the transceiver unit 1110 is further used to: send first information to the terminal device, where the first information is used to activate a target SSB configuration among the multiple SSB configurations.

[0183] In some implementations, the first information is carried in DCI or MAC CE.

[0184] In some implementations, a period for transmitting SSB in the SSB configuration activated by the DCI is smaller than a period for transmitting SSB in the SSB configuration activated by the MAC CE.

[0185] In some implementations, the MAC CE includes one or more of the following: a field for carrying the index of the target SSB; a field for indicating the transmission timing of the SSB; and a field for indicating the duration of the SSB.

[0186] In some implementations, the MAC CE carrying the first information is encoded in the same manner as the MAC CE used to activate the secondary cell; and / or the MAC CE carrying the first information and the MAC CE used to activate the secondary cell are carried on the same MAC PDU or on different MAC PDUs; and / or the priority of the MAC CE used to activate the secondary cell is higher than the priority of the MAC CE carrying the first information.

[0187] In some implementations, the DCI is a DCI for the terminal device; or, the DCI is a group common DCI for a group of terminal devices, and the group of terminal devices includes the terminal device.

[0188] In some implementations, SSB transmission is activated based on one or more of the following: second information sent by the network device, the second information is used to indicate activation of SSB transmission; the network device is turned on as an access point or a backhaul relay switch; the terminal device sends third information to the network device, the third information is used to request activation of SSB transmission.

[0189] In some implementations, the second information is signaling for indicating activation or deactivation of a secondary cell; and / or the third information is a wake-up signal sent by the terminal device.

[0190] In some implementations, the third information is triggered based on the following conditions: the received signal strength of a reference cell associated with the secondary cell of the terminal device is less than a first threshold; and / or the time difference between the downlink reception timing of the secondary cell and the reference cell is greater than a second threshold.

[0191] In some implementations, the third information is carried in one or more of the following: PRACH; message MSG 3 in the RACH process; periodic or semi-static PUCCH; periodic or semi-static PUSCH.

[0192] In some implementations, the transceiver unit 1110 is further used to: send the SSB to the terminal device based on a target beam among multiple beams, and the multiple beams are associated with multiple periods for transmitting the SSB.

[0193] In some implementations, the multiple SSB configurations include configurations of the multiple beams, wherein the configuration of each beam includes one or more of: a beam identifier; a period of the SSB; and a field for adjusting the period of the SSB.

[0194] It can be understood that the transceiver unit 1110 can be, for example, a transceiver 1230. In addition, optionally, the network device 1000 further includes a processor 1210 and a memory 1220, for details, see Fig.12 .

[0195] Fig.12 It is a schematic structural diagram of a device for communication according to an embodiment of the present application. Fig.12 The dotted line shown in indicates that the unit or module is optional. The apparatus 1200 may be used to implement the method described in the above method embodiment. The apparatus 1200 may be, for example, a chip, a terminal device, or a network device.

[0196] The device 1200 may include one or more processors 1210. The processor 1210 may support the device 1200 to implement the method described in the aforementioned method embodiment. The processor 1210 may be a general-purpose processor or a special-purpose processor. For example, the processor 1210 may be a central processing unit (CPU). Alternatively, the processor 1210 may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or may be any conventional processor, etc.

[0197] The apparatus 1200 may further include one or more memories 1220. The memory 1220 stores a program, which can be executed by the processor 1210, so that the processor 1210 executes the method described in the above method embodiment. The memory 1220 may be independent of the processor 1210, or may be integrated in the processor 1210.

[0198] The apparatus 1200 may further include a transceiver 1230. The processor 1210 may communicate with other devices or chips through the transceiver 1230. For example, the processor 1210 may transmit and receive data with other devices or chips through the transceiver 1230.

[0199] The embodiment of the present application also provides a communication system. The communication system includes the above-mentioned terminal device and network device. In some implementations, the system also includes other devices that interact with the terminal device and the network device.

[0200] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device or a network device provided in the present application, and the program enables a computer to execute the method performed by the terminal device or the network device in each embodiment of the present application.

[0201] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device or network device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0202] The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal device or network device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the terminal device or network device in each embodiment of the present application.

[0203] It should be understood that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0204] In the embodiments of the present application, the "indication" mentioned can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0205] In the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0206] In the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship of indication and being indicated, configuration and being configured, etc.

[0207] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0208] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0209] In the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0210] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

[0211] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0212] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0213] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0214] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0215] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives configuration information sent by the network device, where the configuration information includes multiple SSB configurations for transmitting a synchronization signal broadcast channel block SSB of a secondary cell, where the SSB is an on-demand SSB; The multiple SSB configurations include configurations of multiple periods for transmitting SSB, and the multiple periods are associated with one or more of the following: The multiple periods are associated with a secondary cell activation process of the terminal device; The plurality of cycles are associated with an SSB burst; The plurality of periods are associated with a beam.

2. The method according to claim 1, characterized in that: The secondary cell activation process includes multiple time periods, and the multiple time periods include one or more of the following: The first period is from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; The second period is from receiving the secondary cell activation signaling to completing the secondary cell activation; The third period is after the secondary cell activation is completed.

3. The method according to claim 2, characterized in that The multiple cycles include a first cycle, a second cycle and a third cycle, and the first cycle, the second cycle and the third cycle are different; The first cycle is used to transmit SSB in the first time period, the second cycle is used to transmit SSB in the second time period, and the third cycle is used to transmit SSB in the third time period.

4. The method according to claim 3, characterized in that The first period is greater than the second period, and the third period is located between the first period and the second period.

5. The method according to claim 3 or 4, characterized in that: The first cycle, the second cycle and the third cycle satisfy: T1 = n1 * T3 = n2 * T2; Wherein, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and n1 and n2 are positive integers.

6. The method according to claim 3 or 4, characterized in that: The first cycle, the second cycle and the third cycle satisfy: T1=α1×T3+β1; T2=α2×T3+β2; Among them, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and α1, α2, β1 and β2 are preset values.

7. The method according to any one of claims 1 to 6, characterized in that The multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst.

8. The method according to claim 7, characterized in that The position of the SSB index in the SSB burst is: ti=t0+i*Δt; Among them, ti is the position corresponding to SSB index i, t0 is the position corresponding to SSB index 0, i is the SSB index, and Δt is the time interval.

9. The method according to any one of claims 1 to 8, characterized in that One or more of the following information in the multiple SSB configurations is different: The frequency corresponding to SSB; The position of the SSB in the SSB burst; The period of SSB; Subcarrier spacing of SSB; Physical cell identification of SSB; The location of the SSB burst; Downlink transmit power for SSB; Number of transmissions of SSB burst; Information associated with the start time of transmission after SSB activation; The index of the SSB configuration.

10. The method according to any one of claims 1 to 9, characterized in that The method further comprises: The terminal device receives first information sent by the network device, and the first information is used to activate a target SSB configuration among the multiple SSB configurations.

11. The method according to claim 10, characterized in that The first information is carried in downlink control information DCI or media access control element MAC CE.

12. The method according to claim 11, characterized in that The MAC CE includes one or more of the following: A field for carrying the index of the target SSB; A field used to indicate the transmission timing of SSB; A field used to indicate the duration of the SSB.

13. The method according to claim 11 or 12, characterized in that: The MAC CE carrying the first information is encoded in the same manner as the MAC CE used to activate the secondary cell; and / or, The MAC CE carrying the first information and the MAC CE used to activate the secondary cell are carried in the same MAC PDU or in different MAC PDUs; and / or, The priority of the MAC CE used to activate the secondary cell is higher than the priority of the MAC CE carrying the first information.

14. The method according to any one of claims 11 to 13, characterized in that The DCI is a DCI for the terminal device; or, The DCI is a group common DCI for a group of terminal devices, and the group of terminal devices includes the terminal device.

15. The method according to any one of claims 1 to 14, characterized in that SSB transmission is activated based on one or more of the following: second information sent by the network device, the second information being used to indicate activation of SSB transmission; The network device is turned on as an access point or a backhaul relay switch; The terminal device sends third information to the network device, where the third information is used to request activation of SSB transmission.

16. The method according to claim 15, characterized in that The second information is a signaling for indicating activation or deactivation of a secondary cell; and / or, The third information is a wake-up signal sent by the terminal device.

17. The method according to claim 16, characterized in that The third information is triggered based on the following conditions: The received signal strength of the reference cell associated with the secondary cell of the terminal device is less than a first threshold; and / or, The time difference between downlink reception timings of the secondary cell and the reference cell is greater than a second threshold.

18. The method according to any one of claims 15 to 17, characterized in that The third information is carried in one or more of the following: Physical Random Access Channel PRACH; In the message MSG 3 of the random access RACH process; In the periodic or semi-static physical uplink control channel PUCCH; In the periodic or semi-static physical uplink shared channel PUSCH.

19. The method according to any one of claims 15 to 18, characterized in that The method further comprises: The terminal device starts to receive the SSB sent by the network device from a first time position, and the interval between the first time position and the time position when the second information is received is a first duration, or the interval between the first time position and the time position when feedback information for the second information is sent is the first duration.

20. The method according to claim 19, characterized in that The first time position is: The start position of the SSB burst; or, The starting position of the first SSB index among the candidate SSB indices in the SSB burst; or, The starting position of the first SSB index actually transmitted in the SSB burst; or, The starting position of the first SSB index in the SSB burst.

21. The method according to claim 20, characterized in that The unit of the first time position is a time slot or a symbol.

22. The method according to any one of claims 15 to 21, characterized in that The method further comprises: The terminal device stops receiving the SSB sent by the network device from a second time position, where the second time position includes one or more of the following: a time position of receiving fourth information sent by the network device, wherein the fourth information is used to indicate deactivation of SSB transmission; A time position having a second time interval from the first time position at which SSB reception is started; The time position at which the SSB is transmitted a predetermined number of times after the first time position.

23. The method according to any one of claims 15 to 22, characterized in that The method further comprises: The terminal device receives the SSB sent by the network device after the second time position based on another period different from the period used before the second time position.

24. The method according to any one of claims 1 to 23, characterized in that The method further comprises: The terminal device receives the SSB sent by the network device based on a target beam among multiple beams, and the multiple beams are associated with multiple periods for transmitting the SSB.

25. The method according to claim 24, characterized in that The multiple SSB configurations include configurations of the multiple beams, wherein the configuration of each beam includes one or more of the following: Beam identification; The period of SSB; A field used to adjust the period of SSB.

26. A method of wireless communication, characterized in that: include: The network device sends configuration information to the terminal device, where the configuration information includes multiple SSB configurations for transmitting a synchronization signal broadcast channel block SSB of a secondary cell, where the SSB is an on-demand SSB; The multiple SSB configurations include configurations of multiple periods for transmitting SSB, and the multiple periods are associated with one or more of the following: The multiple periods are associated with a secondary cell activation process of the terminal device; The plurality of cycles are associated with an SSB burst; The plurality of periods are associated with a beam.

27. The method according to claim 26, characterized in that The secondary cell activation process includes multiple time periods, and the multiple time periods include one or more of the following: The first period is from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; The second period is from receiving the secondary cell activation signaling to completing the secondary cell activation; The third period is after the secondary cell activation is completed.

28. The method according to claim 27, characterized in that The multiple cycles include a first cycle, a second cycle and a third cycle, and the first cycle, the second cycle and the third cycle are different; The first cycle is used to transmit SSB in the first time period, the second cycle is used to transmit SSB in the second time period, and the third cycle is used to transmit SSB in the third time period.

29. The method according to claim 28, characterized in that The first period is greater than the second period, and the third period is located between the first period and the second period.

30. The method according to claim 28 or 29, characterized in that The first cycle, the second cycle and the third cycle satisfy: T1 = n1 * T3 = n2 * T2; Wherein, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and n1 and n2 are positive integers.

31. The method according to claim 29 or 30, characterized in that The first cycle, the second cycle and the third cycle satisfy: T1=α1×T3+β1; T2=α2×T3+β2; Among them, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and α1, α2, β1 and β2 are preset values.

32. The method according to any one of claims 26 to 31, characterized in that The multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst.

33. The method according to claim 32, characterized in that The position of the SSB index in the SSB burst is: ti=t0+i*Δt; Among them, ti is the position corresponding to SSB index i, t0 is the position corresponding to SSB index 0, i is the SSB index, and Δt is the time interval.

34. The method according to any one of claims 26 to 33, characterized in that One or more of the following information in the multiple SSB configurations is different: The frequency corresponding to SSB; The position of the SSB in the SSB burst; The period of SSB; Subcarrier spacing of SSB; Physical cell identification of SSB; The location of the SSB burst; Downlink transmit power for SSB; Number of transmissions of SSB burst; Information associated with the start time of transmission after SSB activation; The index of the SSB configuration.

35. The method according to any one of claims 26 to 34, characterized in that The method further comprises: The network device sends first information to the terminal device, where the first information is used to activate a target SSB configuration among the multiple SSB configurations.

36. The method according to claim 35, characterized in that The first information is carried in downlink control information DCI or media access control element MAC CE.

37. The method according to claim 36, characterized in that The MAC CE includes one or more of the following: A field for carrying the index of the target SSB; A field used to indicate the transmission timing of SSB; A field used to indicate the duration of the SSB.

38. The method according to claim 36 or 37, characterized in that The MAC CE carrying the first information is encoded in the same manner as the MAC CE used to activate the secondary cell; and / or, The MAC CE carrying the first information and the MAC CE used to activate the secondary cell are carried in the same MAC PDU or in different MAC PDUs; and / or, The priority of the MAC CE used to activate the secondary cell is higher than the priority of the MAC CE carrying the first information.

39. The method according to any one of claims 36 to 38, characterized in that The DCI is a DCI for the terminal device; or, The DCI is a group common DCI for a group of terminal devices, and the group of terminal devices includes the terminal device.

40. The method according to any one of claims 26 to 39, characterized in that SSB transmission is activated based on one or more of the following: second information sent by the network device, the second information being used to indicate activation of SSB transmission; The network device is turned on as an access point or a backhaul relay switch; The terminal device sends third information to the network device, where the third information is used to request activation of SSB transmission.

41. The method according to claim 40, characterized in that The second information is a signaling for indicating activation or deactivation of a secondary cell; and / or, The third information is a wake-up signal sent by the terminal device.

42. The method according to claim 41, characterized in that The third information is triggered based on the following conditions: The received signal strength of the reference cell associated with the secondary cell of the terminal device is less than a first threshold; and / or, The time difference between downlink reception timings of the secondary cell and the reference cell is greater than a second threshold.

43. The method according to any one of claims 40 to 42, characterized in that The third information is carried in one or more of the following: Physical Random Access Channel PRACH; In the message MSG 3 of the random access RACH process; In the periodic or semi-static physical uplink control channel PUCCH; In the periodic or semi-static physical uplink shared channel PUSCH.

44. The method according to any one of claims 26 to 43, characterized in that The method further comprises: The network device sends the SSB to the terminal device based on a target beam among multiple beams, and the multiple beams are associated with multiple periods for transmitting the SSB.

45. The method according to claim 44, characterized in that The multiple SSB configurations include configurations of the multiple beams, wherein the configuration of each beam includes one or more of the following: Beam identification; The period of SSB; A field used to adjust the period of SSB.

46. ​​A terminal device, characterized in that: include: A transceiver unit, configured to receive configuration information sent by a network device, wherein the configuration information includes a plurality of SSB configurations for transmitting a synchronization signal broadcast channel block SSB of a secondary cell, wherein the SSB is an on-demand SSB; The multiple SSB configurations include configurations of multiple periods for transmitting SSB, and the multiple periods are associated with one or more of the following: The multiple periods are associated with a secondary cell activation process of the terminal device; The plurality of cycles are associated with an SSB burst; The plurality of periods are associated with a beam.

47. The terminal device according to claim 46, characterized in that: The secondary cell activation process includes multiple time periods, and the multiple time periods include one or more of the following: The first period is from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; The second period is from receiving the secondary cell activation signaling to completing the secondary cell activation; The third period is after the secondary cell activation is completed.

48. The terminal device according to claim 47, characterized in that: The multiple cycles include a first cycle, a second cycle and a third cycle, and the first cycle, the second cycle and the third cycle are different; The first cycle is used to transmit SSB in the first time period, the second cycle is used to transmit SSB in the second time period, and the third cycle is used to transmit SSB in the third time period.

49. The terminal device according to claim 48, characterized in that: The first period is greater than the second period, and the third period is located between the first period and the second period.

50. The terminal device according to claim 48 or 49, characterized in that: The first cycle, the second cycle and the third cycle satisfy: T1 = n1 * T3 = n2 * T2; Wherein, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and n1 and n2 are positive integers.

51. The terminal device according to claim 48 or 49, characterized in that: The first cycle, the second cycle and the third cycle satisfy: T1=α1×T3+β1; T2=α2×T3+β2; Among them, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and α1, α2, β1 and β2 are preset values.

52. The terminal device according to any one of claims 46 to 51, characterized in that: The multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst.

53. The terminal device according to claim 52, characterized in that: The position of the SSB index in the SSB burst is: ti=t0+i*Δt; Among them, ti is the position corresponding to SSB index i, t0 is the position corresponding to SSB index 0, i is the SSB index, and Δt is the time interval.

54. The terminal device according to any one of claims 46 to 53, characterized in that: One or more of the following information in the multiple SSB configurations is different: The frequency corresponding to SSB; The position of the SSB in the SSB burst; The period of SSB; Subcarrier spacing of SSB; Physical cell identification of SSB; The location of the SSB burst; Downlink transmit power for SSB; Number of transmissions of SSB burst; Information associated with the start time of transmission after SSB activation; The index of the SSB configuration.

55. The terminal device according to any one of claims 46 to 54, characterized in that: The transceiver unit is also used for: Receive first information sent by the network device, where the first information is used to activate a target SSB configuration among the multiple SSB configurations.

56. The terminal device according to claim 55, characterized in that: The first information is carried in downlink control information DCI or media access control element MAC CE.

57. The terminal device according to claim 56, characterized in that: The MAC CE includes one or more of the following: A field for carrying the index of the target SSB; A field used to indicate the transmission timing of SSB; A field used to indicate the duration of the SSB.

58. The terminal device according to claim 56 or 57, characterized in that: The MAC CE carrying the first information is encoded in the same manner as the MAC CE used to activate the secondary cell; and / or, The MAC CE carrying the first information and the MAC CE used to activate the secondary cell are carried in the same MAC PDU or in different MAC PDUs; and / or, The priority of the MAC CE used to activate the secondary cell is higher than the priority of the MAC CE carrying the first information.

59. The terminal device according to any one of claims 56 to 58, characterized in that: The DCI is a DCI for the terminal device; or, The DCI is a group common DCI for a group of terminal devices, and the group of terminal devices includes the terminal device.

60. The terminal device according to any one of claims 46 to 59, characterized in that: SSB transmission is activated based on one or more of the following: second information sent by the network device, the second information being used to indicate activation of SSB transmission; The network device is turned on as an access point or a backhaul relay switch; The terminal device sends third information to the network device, where the third information is used to request activation of SSB transmission.

61. The terminal device according to claim 60, characterized in that: The second information is a signaling for indicating activation or deactivation of a secondary cell; and / or, The third information is a wake-up signal sent by the terminal device.

62. The terminal device according to claim 61, characterized in that: The third information is triggered based on the following conditions: The received signal strength of the reference cell associated with the secondary cell of the terminal device is less than a first threshold; and / or, The time difference between downlink reception timings of the secondary cell and the reference cell is greater than a second threshold.

63. The terminal device according to any one of claims 60 to 62, characterized in that: The third information is carried in one or more of the following: Physical Random Access Channel PRACH; In the message MSG 3 of the random access RACH process; In the periodic or semi-static physical uplink control channel PUCCH; In the periodic or semi-static physical uplink shared channel PUSCH.

64. The terminal device according to any one of claims 60 to 63, characterized in that: The transceiver unit is also used for: The SSB sent by the network device is received starting from a first time position, wherein the interval between the first time position and the time position at which the second information is received is a first duration, or the interval between the first time position and the time position at which feedback information for the second information is sent is a first duration.

65. The terminal device according to claim 64, characterized in that: The first time position is: The start position of the SSB burst; or, The starting position of the first SSB index among the candidate SSB indices in the SSB burst; or, The starting position of the first SSB index actually transmitted in the SSB burst; or, The starting position of the first SSB index in the SSB burst.

66. The terminal device according to claim 65, characterized in that: The unit of the first time position is a time slot or a symbol.

67. The terminal device according to any one of claims 60 to 66, characterized in that: The transceiver unit is also used for: Stop receiving the SSB sent by the network device from a second time position, where the second time position includes one or more of the following: a time position of receiving fourth information sent by the network device, wherein the fourth information is used to indicate deactivation of SSB transmission; A time position having a second time interval from the first time position at which SSB reception is started; The time position at which the SSB is transmitted a predetermined number of times after the first time position.

68. The terminal device according to any one of claims 60 to 67, characterized in that: The terminal device further includes: The terminal device receives the SSB sent by the network device after the second time position based on another period different from the period used before the second time position.

69. The terminal device according to any one of claims 60 to 68, characterized in that: The transceiver unit is also used for: An SSB is received that is transmitted by the network device based on a target beam among a plurality of beams, wherein the plurality of beams are associated with a plurality of periods for transmitting the SSB.

70. The terminal device according to claim 69, characterized in that: The multiple SSB configurations include configurations of the multiple beams, wherein the configuration of each beam includes one or more of the following: Beam identification; The period of SSB; A field used to adjust the period of SSB.

71. A network device, characterized in that: include: A transceiver unit, configured to send configuration information to a terminal device, wherein the configuration information includes a plurality of SSB configurations for transmitting a synchronization signal broadcast channel block SSB of a secondary cell, wherein the SSB is an on-demand SSB; The multiple SSB configurations include configurations of multiple periods for transmitting SSB, and the multiple periods are associated with one or more of the following: The multiple periods are associated with a secondary cell activation process of the terminal device; The plurality of cycles are associated with an SSB burst; The plurality of periods are associated with a beam.

72. The network device according to claim 71, characterized in that The secondary cell activation process includes multiple time periods, and the multiple time periods include one or more of the following: The first period is from receiving the secondary cell configuration information to receiving the secondary cell activation signaling; The second period is from receiving the secondary cell activation signaling to completing the secondary cell activation; The third period is after the secondary cell activation is completed.

73. The network device according to claim 72, characterized in that The multiple cycles include a first cycle, a second cycle and a third cycle, and the first cycle, the second cycle and the third cycle are different; The first cycle is used to transmit SSB in the first time period, the second cycle is used to transmit SSB in the second time period, and the third cycle is used to transmit SSB in the third time period.

74. The network device according to claim 73, characterized in that The first period is greater than the second period, and the third period is located between the first period and the second period.

75. The network device according to claim 73 or 74, characterized in that: The first cycle, the second cycle and the third cycle satisfy: T1 = n1 * T3 = n2 * T2; Wherein, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and n1 and n2 are positive integers.

76. The network device according to claim 73 or 74, characterized in that: The first cycle, the second cycle and the third cycle satisfy: T1=α1×T3+β1; T2=α2×T3+β2; Among them, T1 is the length of the first cycle, T2 is the length of the second cycle, T3 is the length of the third cycle, and α1, α2, β1 and β2 are preset values.

77. The network device according to any one of claims 71 to 76, characterized in that: The multiple SSB configurations include configurations of multiple time intervals between adjacent SSB indexes in an SSB burst.

78. The network device according to claim 77, characterized in that The position of the SSB index in the SSB burst is: ti=t0+i*Δt; Among them, ti is the position corresponding to SSB index i, t0 is the position corresponding to SSB index 0, i is the SSB index, and Δt is the time interval.

79. The network device according to any one of claims 71 to 78, characterized in that: One or more of the following information in the multiple SSB configurations is different: The frequency corresponding to SSB; The position of the SSB in the SSB burst; The period of SSB; Subcarrier spacing of SSB; Physical cell identification of SSB; The location of the SSB burst; Downlink transmit power for SSB; Number of transmissions of SSB burst; Information associated with the start time of transmission after SSB activation; The index of the SSB configuration.

80. The network device according to any one of claims 71 to 79, characterized in that: The transceiver unit is also used for: Sending first information to the terminal device, wherein the first information is used to activate a target SSB configuration among the multiple SSB configurations.

81. The network device according to claim 80, characterized in that: The first information is carried in downlink control information DCI or media access control element MAC CE.

82. The network device according to claim 81, characterized in that: The MAC CE includes one or more of the following: A field for carrying the index of the target SSB; A field used to indicate the transmission timing of SSB; A field used to indicate the duration of the SSB.

83. The network device according to claim 81 or 82, characterized in that: The MAC CE carrying the first information is encoded in the same manner as the MAC CE used to activate the secondary cell; and / or, The MAC CE carrying the first information and the MAC CE used to activate the secondary cell are carried in the same MAC PDU or in different MAC PDUs; and / or, The priority of the MAC CE used to activate the secondary cell is higher than the priority of the MAC CE carrying the first information.

84. The network device according to any one of claims 81 to 83, characterized in that: The DCI is a DCI for the terminal device; or, The DCI is a group common DCI for a group of terminal devices, and the group of terminal devices includes the terminal device.

85. The network device according to any one of claims 71 to 84, characterized in that: SSB transmission is activated based on one or more of the following: second information sent by the network device, the second information being used to indicate activation of SSB transmission; The network device is turned on as an access point or a backhaul relay switch; The terminal device sends third information to the network device, where the third information is used to request activation of SSB transmission.

86. The network device according to claim 85, characterized in that The second information is a signaling for indicating activation or deactivation of a secondary cell; and / or, The third information is a wake-up signal sent by the terminal device.

87. The network device according to claim 86, characterized in that The third information is triggered based on the following conditions: The received signal strength of the reference cell associated with the secondary cell of the terminal device is less than a first threshold; and / or, The time difference between downlink reception timings of the secondary cell and the reference cell is greater than a second threshold.

88. The network device according to any one of claims 85 to 87, characterized in that: The third information is carried in one or more of the following: Physical Random Access Channel PRACH; In the message MSG 3 of the random access RACH process; In the periodic or semi-static physical uplink control channel PUCCH; In the periodic or semi-static physical uplink shared channel PUSCH.

89. The network device according to any one of claims 71 to 88, characterized in that: The transceiver unit is also used for: The SSB is transmitted to the terminal device based on a target beam among a plurality of beams, wherein the plurality of beams are associated with a plurality of periods for transmitting the SSB.

90. The network device according to claim 89, characterized in that The multiple SSB configurations include configurations of the multiple beams, wherein the configuration of each beam includes one or more of the following: Beam identification; The period of SSB; A field used to adjust the period of SSB.

91. A terminal device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the terminal device executes the method according to any one of claims 1 to 25.

92. A network device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method according to any one of claims 26 to 45.

93. A device, characterized in that The device comprises a processor, configured to call a program from a memory so as to cause the device to execute a method according to any one of claims 1 to 45.

94. A chip, characterized in that: The device comprises a processor, configured to call a program from a memory so that a device equipped with the chip executes a method according to any one of claims 1 to 45.

95. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 45.

96. A computer program product, characterized in that A program is included, which causes a computer to execute the method according to any one of claims 1 to 45.

97. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 45.

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