Wireless communication method, terminal device, and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device sending first information to a network device, wherein the first information is used for requesting sending of a first SSB by the network device. In the embodiments of the present application, the terminal device may request, by means of the first information, sending of an SSB (also referred to as a "first SSB") by the network device, that is, the first SSB may be requested by the terminal device on demand. Compared with the periodic transmission of an SSB in traditional schemes, the transmission of an SSB requested by a terminal device on demand is conducive to a reduction in the number of SSBs which are not effectively utilized by the terminal device, thereby improving the utilization rate of transmission resources.

Description

Wireless communication method, terminal equipment and network equipment 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 traditional communication systems, the synchronization signal block / physical broadcast channel block (SS / PBCH block, SSB) is a signal transmitted periodically. For terminal devices, it is impossible to ensure that each transmitted SSB is effectively utilized, which may lead to resource waste.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method, terminal device, and network device. The following introduces various aspects of the present application.

[0005] In a first aspect, a method for wireless communication is provided, comprising: a terminal device sends first information to a network device, wherein the first information is used to request the network device to send a first SSB.

[0006] In a second aspect, a method for wireless communication is provided, including: a network device receives first information sent by a terminal device, where the first information is used to request the network device to send a first SSB.

[0007] According to a third aspect, a method for wireless communication is provided, including: a terminal device receives second information sent by a network device, wherein the second information is used to indicate one or more of the following: transmitting or not transmitting a first SSB; transmitting or not transmitting the first SSB within a second time period; and a period for transmitting the first SSB.

[0008] In a fourth aspect, a method for wireless communication is provided, including: second information sent by a network device to a terminal device, wherein the second information is used to indicate one or more of the following: transmission or non-transmission of a first SSB; transmission or non-transmission of the first SSB within a second time period; and a period for transmitting the first SSB.

[0009] In a fifth aspect, a terminal device is provided, comprising: a sending unit, configured to send first information to a network device, wherein the first information is used to request the network device to send a first SSB.

[0010] In a sixth aspect, a network device is provided, comprising: a receiving unit for receiving first information sent by a terminal device, wherein the first information is used to request the network device to send a first SSB.

[0011] In the seventh aspect, a terminal device is provided, including: a receiving unit for receiving second information sent by a network device, wherein the second information is used to indicate one or more of the following: transmission or non-transmission of the first SSB; transmission or non-transmission of the first SSB within a second time period; and a period for transmitting the first SSB.

[0012] In the eighth aspect, a network device is provided, including: a sending unit for sending second information to a terminal device, wherein the second information is used to indicate one or more of the following: transmission or non-transmission of a first SSB; transmission or non-transmission of the first SSB within a second time period; and a period for transmitting the first SSB.

[0013] In the ninth aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the methods of the above aspects.

[0014] In the tenth aspect, a network device is provided, comprising a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes part or all of the steps in the methods of the above aspects.

[0015] In an eleventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.

[0016] In the twelfth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a communication device (for example, a terminal device or a network device) to execute part or all of the steps in the methods of the above aspects.

[0017] In a thirteenth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product may be a software installation package.

[0018] In the fourteenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0019] In an embodiment of the present application, a terminal device may request a network device to transmit an SSB (also referred to as a "first SSB") via a first message. That is, the first SSB may be requested on demand by the terminal device. Compared to the periodic transmission of SSBs in conventional schemes, this on-demand request for SSB transmission by the terminal device helps reduce the number of SSBs not effectively utilized by the terminal device, thereby improving the utilization of transmission resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a wireless communication system 100 used in an embodiment of the present application.

[0021] FIG2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0022] 3 to 8 are schematic diagrams of a solution in which a terminal device requests SSB in an embodiment of the present application.

[0023] FIG9 is a schematic flowchart of a wireless communication method according to another embodiment of the present application.

[0024] 10 to 12 are schematic diagrams of schemes for activating or deactivating the first SSB in an embodiment of the present application.

[0025] FIG13 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0026] FIG14 is a schematic diagram of a network device according to an embodiment of the present application.

[0027] FIG15 is a schematic diagram of a terminal device according to another embodiment of the present application.

[0028] FIG16 is a schematic diagram of a network device according to another embodiment of the present application.

[0029] FIG17 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solution in this application will be described below with reference to the accompanying drawings.

[0031] Figure 1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the terminal device 120 within the coverage area.

[0032] FIG1 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0033] Optionally, the wireless communication system 100 may further 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.

[0034] 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 this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0035] The terminal device in the embodiments of the present application 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 refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, 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 a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through the base station.

[0036] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device D2D, vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network device.

[0037] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0038] In some deployments, the network device in the embodiments of the present application 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.

[0039] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0040] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0041] SSB

[0042] SSB plays a fundamental role in initial access and carries more important functions, such as carrying cell ID, time-frequency synchronization, indicating symbol-level / time slot-level / frame timing, beam signal strength / signal quality measurement, cell signal strength / signal quality measurement, etc. To support these functions, SSB contains the primary synchronization signal (PSS), the secondary synchronization signal (SSS), the physical broadcast channel (PBCH), and the demodulation reference signal (DMRS). Among them, the measurement of cell signal strength / signal quality may include, for example, radio resource management (RRM) measurement and / or channel state information (CSI) measurement. The measurement of beam signal strength / signal quality can be used to perform beam selection, perform beam fault detection, and perform beam fault recovery.

[0043] In some implementations, the PSS and SSS are used to carry cell IDs (e.g., up to 1008 cell IDs), achieve time-frequency synchronization, and obtain symbol-level timing. The DMRS can be used to measure cell or beam signal accuracy / quality. The PBCH is used to indicate information such as slot / frame timing.

[0044] SSB transmission method

[0045] In some communication systems (e.g., NR communication systems), network devices may periodically transmit SSBs, which are used by terminal devices to synchronize with the network device or serving cell, or to perform measurements. In carrier aggregation scenarios, when a network device adds an SCell to a terminal device, the network device may also be configured to transmit SSBs in a secondary cell (SCell).

[0046] As mentioned above, in traditional communication systems, SSB is a periodically transmitted signal. This scheme lacks flexibility. On the other hand, for terminal devices, there is no guarantee that each transmitted SSB is effectively utilized, which may lead to resource waste.

[0047] In some scenarios, to reduce the possibility of resource waste, traditional solutions introduce a method called SSB transmission with a large period. This type of SSB transmission corresponds to a sparse distribution of transmission resources in the time domain. However, in this case, if a terminal device needs to receive SSB, it must wait for a long time, which may cause the terminal device's synchronization performance to degrade and affect the performance of the communication system.

[0048] Therefore, in response to the above problems, an embodiment of the present application provides a method for wireless communication, in which a terminal device can request a network device to send an SSB (hereinafter referred to as the "first SSB") through a first message. Compared with the traditional scheme of periodically transmitting SSB, this method helps to improve the flexibility of transmitting SSB.

[0049] On the other hand, since the transmission of the first SSB is requested by the terminal device, or in other words, the transmission of the first SSB is requested by the terminal device on demand, compared with the scheme of periodically transmitting SSB, it helps to reduce the possibility of resource waste.

[0050] On the other hand, since the transmission of the first SSB is requested by the terminal device, or in other words, the transmission of the first SSB is requested by the terminal device on demand, compared with the solution of transmitting SSB in a larger period, it helps to reduce the delay of the terminal device waiting for SSB, so as to reduce the impact on the synchronization performance of the terminal device.

[0051] The following describes a wireless communication method according to an embodiment of the present application in conjunction with Figure 2. Figure 2 is a schematic flow chart of the wireless communication method according to an embodiment of the present application. The method shown in Figure 2 includes step S210.

[0052] In step S210, the terminal device sends first information to the network device, where the first information is used to request the network device to send a first SSB.

[0053] In some implementations, the first SSB may be understood as a type of SSB. For example, the first SSB may be an SSB that is not used for initial synchronization. Of course, in the embodiment of the present application, the first SSB may be an SSB used for initial synchronization.

[0054] In the embodiment of the present application, there is no limit on the number of first SSBs requested by the first information. For example, the first SSB may include one or more SSBs.

[0055] In some scenarios, the first information is used to request the network device to send the first SSB. This can be replaced by the first information being used to trigger the network device to send the first SSB. In this case, the first SSB is also called a "triggering SSB." In other scenarios, the first SSB can be understood as an SSB requested on demand by the terminal device. Therefore, the first SSB can also be called an "on-demand SSB."

[0056] In the embodiment of the present application, the cell that transmits the first information and the cell that transmits the first SSB may be the same or different. In some implementations, the first SSB may be transmitted in the second cell, and the first information may be transmitted in the first cell. In other implementations, the first SSB and the first information may both be transmitted in the second cell. Of course, in the embodiment of the present application, the first information may be transmitted in both the first cell and the second cell, while the first SSB is transmitted in the second cell.

[0057] In the embodiment of the present application, the first cell and the second cell are not limited. For example, the first cell can be a primary cell and the second cell can be a secondary cell. For another example, the first cell can be a secondary cell and the second cell can be a primary cell.

[0058] In addition, in an embodiment of the present application, the transmission scheme of the first SSB can be applied not only to the activated SCell, but also to the added SCell (at this time, the SCell may not be activated). Accordingly, the terminal device can measure the added SCell based on the first SSB, which helps to shorten the time required to switch the SCell.

[0059] As described above, the first information is used to request the first SSB, that is, the first information can be used to determine the requested SSB. In the embodiments of the present application, the method for determining the first SSB based on the first information is not limited, and is described below in conjunction with Examples 1 and 2. Among them, Example 1 is described by taking the example of indirectly indicating the first SSB through the first information. Example 2 is described by taking the example of directly indicating the first SSB through the first information.

[0060] Embodiment 1: Indirectly indicating the first SSB through the first information.

[0061] Implementation 1: The first information is sent via the first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and a first association relationship, where the first association relationship includes an association relationship between the transmission resource and one or more SSB indexes. In other words, the transmission resources in the first association relationship include the first transmission resource, and accordingly, the SSB index of the first SSB is the SSB index associated with the first transmission resource in the first association relationship.

[0062] As mentioned above, the first SSB can be understood as the SSB requested on demand by the terminal device. Accordingly, the transmission resources for transmitting the first SSB (i.e., the first transmission resources) can be called "on-demand (OD) resources".

[0063] In the embodiment of the present application, the implementation method of the above-mentioned first association relationship is not limited. In some implementation methods, the association relationship between the transmission resource and one or more SSB indexes in the first association relationship may include the association relationship between the index of the transmission resource and one or more SSB indexes. In the embodiment of the present application, the index of the transmission resource may include the index of the time domain resource occupied by the transmission resource and / or the index of the frequency domain resource, wherein the index of the time domain resource may be, for example, the index of the symbol, and the index of the frequency domain resource may be, for example, the index of the subcarrier. In other implementation methods, the association relationship between the transmission resource and one or more SSB indexes in the first association relationship may include the association relationship between the time domain position and / or frequency domain position of the transmission resource and one or more SSB indexes.

[0064] In the embodiments of the present application, there is no limitation on the method for obtaining the first association relationship. In some implementations, the first association relationship may be predefined, for example, the first association relationship may be predefined based on a protocol. In other implementations, the first association relationship may be preconfigured, for example, the first association relationship may be preconfigured by the terminal device and / or network device when it leaves the factory. In other implementations, the first association relationship may be configured by the network device, for example, before step S210, the network device may configure the first association relationship for the terminal device.

[0065] In some implementations, the first SSB with the same index has a quasi co-location (QCL) relationship with the first reference signal, wherein having a QCL relationship can be understood as the first SSB with the same index has the same beam direction as the first reference signal. In an embodiment of the present application, the first reference signal may be sent before the first SSB, which helps the terminal device determine the beam direction of the first SSB based on the beam direction of the previously received first reference signal and the QCL relationship. For an introduction to the first reference signal, please refer to the following.

[0066] For ease of understanding, the following takes the first association relationship as the association relationship between the OD index and the index of the first SSB as an example, and combines Figure 3 to introduce the solution of the terminal device requesting SSB in an embodiment of the present application.

[0067] As shown in Figure 3, it is assumed that the first association relationship indicates that the first SSB indexes associated with OD1 are SSB1 and SSB2, the indexes of the first SSB associated with OD2 are SSB3 and SSB4, and the indexes of the first SSB associated with OD3 are SSB5 and SSB6. Accordingly, if the terminal device sends the first information through OD1, the indexes of the first SSB requested by the first information are SSB1 and SSB2. If the terminal device sends the first information through OD2, the indexes of the first SSB requested by the first information are SSB3 and SSB4. If the terminal device sends the first information through OD3, the indexes of the first SSB requested by the first information are SSB5 and SSB6.

[0068] Implementation 2: The first information is sent via the second transmission resource. The SSB index of the first SSB is determined based on the index of the first reference signal. The index of the first reference signal is determined based on the second transmission resource and a second association. The second association includes an association between the transmission resource and the indexes of one or more first reference signals. In other words, the transmission resources in the second association include the second transmission resource. Accordingly, the index of the first reference signal is the index of the reference signal associated with the second transmission resource in the second association.

[0069] In the embodiment of the present application, the method for determining the SSB index of the first SSB is not limited. In some implementations, the SSB index of the first SSB may be the same as the index of the first reference signal. Of course, in the embodiment of the present application, the index of the first SSB may be obtained by increasing or decreasing the index of the first reference signal. For example, the index of the first SSB may be obtained by increasing the index of the first reference signal by a preset value. For another example, the index of the first SSB may be obtained by decreasing the index of the first reference signal by a preset value.

[0070] As mentioned above, the first SSB can be understood as the SSB requested on demand by the terminal device. Accordingly, the transmission resources for transmitting the first SSB (i.e., the second transmission resources) can be called "on-demand (OD) resources".

[0071] In the embodiment of the present application, the implementation method of the above-mentioned second association relationship is not limited. In some implementation methods, the association relationship between the transmission resource and the index of one or more first reference signals in the second association relationship may include the association relationship between the index of the transmission resource and the index of one or more first reference signals. In the embodiment of the present application, the index of the transmission resource may include the index of the time domain resource occupied by the transmission resource and / or the index of the frequency domain resource, wherein the index of the time domain resource may be, for example, the index of the symbol, and the index of the frequency domain resource may be, for example, the index of the subcarrier. In other implementation methods, the association relationship between the transmission resource and the index of one or more first reference signals in the second association relationship may include the association relationship between the time domain position and / or frequency domain position of the transmission resource and the index of one or more first reference signals.

[0072] In the embodiments of the present application, there is no limitation on the method for obtaining the second association relationship. In some implementations, the second association relationship may be predefined, for example, the second association relationship may be predefined based on a protocol. In other implementations, the second association relationship may be preconfigured, for example, the second association relationship may be preconfigured by the terminal device and / or network device when it leaves the factory. In other implementations, the second association relationship may be configured by the network device, for example, before step S210, the network device may configure the second association relationship for the terminal device.

[0073] In some implementations, a first SSB with the same index has a QCL relationship with the first reference signal, where having a QCL relationship can be understood as the first SSB with the same index has the same beam direction as the first reference signal. In an embodiment of the present application, the first reference signal may be sent before the first SSB, which helps the terminal device determine the beam direction of the first SSB based on the beam direction of the previously received first reference signal and the QCL relationship. For an introduction to the first reference signal, please refer to the following.

[0074] For ease of understanding, the following takes the example in which the second association relationship is the association relationship between the OD index and the index of the first reference signal, and the index of the first reference signal is the same as the index of the first SSB, and combines Figure 4 to introduce the solution for the terminal device requesting SSB in an embodiment of the present application.

[0075] As shown in Figure 4, it is assumed that the second association relationship indicates that the index of the first reference signal associated with OD1 is index 1 and index 2, the index of the first reference signal associated with OD2 is index 3 and index 4, and the index of the first reference signal associated with OD3 is index 5 and index 6. Accordingly, if the terminal device sends the first information through OD1, the index of the first reference signal determined based on the second association relationship is index 1 and index 2, and accordingly, the index of the first SSB is index 1 and index 2. If the terminal device sends the first information through OD2, the index of the first reference signal determined based on the second association relationship is index 3 and index 4, and accordingly, the index of the first SSB is index 3 and index 4. If the terminal device sends the first information through OD3, the index of the first reference signal determined based on the second association relationship is index 5 and index 6, and accordingly, the index of the first SSB is index 5 and index 6.

[0076] Implementation 3: The first information is sent via a third transmission resource. The first time period corresponding to the first SSB is determined based on the third transmission resource and a third association relationship. The third association relationship is used to indicate an association relationship between the transmission resource and one or more first time periods. The first time period corresponding to the first SSB is used to determine the transmission time of the first SSB. In other words, the transmission resources in the third association relationship include the third transmission resource. Accordingly, the first time period corresponding to the first SSB is the first time period associated with the third transmission resource in the third association relationship.

[0077] As mentioned above, the first SSB can be understood as the SSB requested on demand by the terminal device. Accordingly, the transmission resources for transmitting the first SSB (i.e., the third transmission resources) can be called "on-demand (OD) resources".

[0078] In the embodiment of the present application, the implementation method of indicating the transmission resource in the above-mentioned third association relationship is not limited. In some implementation methods, the above-mentioned third association relationship can indicate the transmission resource by the index of the transmission resource, that is, the third association relationship is used to indicate the association between the index of the transmission resource and one or more time periods. In the embodiment of the present application, the index of the transmission resource may include the index of the time domain resource occupied by the transmission resource and / or the index of the frequency domain resource, wherein the index of the time domain resource may be, for example, the index of the symbol, and the index of the frequency domain resource may be, for example, the index of the subcarrier.

[0079] In other implementations, the third association relationship may indicate the transmission resource by the time domain position and / or frequency domain position of the transmission resource. That is, the third association relationship includes the association relationship between the time domain position and / or frequency domain position of the transmission resource and the time period. In an embodiment of the present application, the time domain position of the transmission resource may include the index of the time domain resource occupied by the transmission resource, wherein the index of the time domain resource may be, for example, the index of the symbol. The frequency domain position of the transmission resource may include the index of the frequency domain resource occupied by the transmission resource, wherein the index of the frequency domain resource may be, for example, the index of the subcarrier.

[0080] In the embodiments of the present application, the implementation method for indicating the first time period in the third association is not limited. In some implementations, the third association can indicate the time period by an index of the first time period, as described below in conjunction with Figure 5 . In other implementations, the third association can indicate the time period by its temporal position, where the temporal position of the time period can include the start time and / or end time of the time period. This is described below in conjunction with Figures 6 and 7 .

[0081] In the embodiments of the present application, the length of the first time period is not limited. In some implementations, the length of the first time period may be predefined, for example, the length of the first time period may be predefined based on a protocol. In other implementations, the length of the first time period may be preconfigured, for example, the length of the first time period may be preconfigured by the terminal device and / or network device when it leaves the factory. In other implementations, the length of the first time period may be configured by the network device, for example, before step S210, the network device may configure the length of the first time period for the terminal device.

[0082] In the embodiments of the present application, the method for obtaining the third association relationship is not limited. In some implementations, the third association relationship may be predefined, for example, the third association relationship may be predefined based on a protocol. In other implementations, the third association relationship may be preconfigured, for example, the third association relationship may be preconfigured by the terminal device and / or network device when it leaves the factory. In other implementations, the third association relationship may be configured by the network device, for example, before step S210, the network device may configure the third association relationship for the terminal device.

[0083] In some implementations, the first time period is used to determine the transmission time of the first SSB, which may include transmitting the first SSB within the first time period. In this case, the first time period may include the transmission time of the first SSB. In other implementations, the first time period may include a portion of the transmission time of the first SSB. This is described below in conjunction with Implementation 3-1 and Implementation 3-2, respectively.

[0084] Implementation method 3-1, the first time period includes the entire transmission time of the first SSB.

[0085] In some implementations, each first time period in one or more first time periods corresponds to a first time window (also called a first time domain window), and accordingly, the index of the first time period can be the index of the first time window, that is, the third association relationship includes the association relationship between the transmission resource and the index of one or more first time windows.

[0086] In some implementations, if the third association relationship indicates that the third transmission resource is associated with multiple first time periods, the multiple first time periods are periodically arranged in the time domain. Of course, in the embodiment of the present application, the third transmission resource can be associated with multiple non-periodic first time periods.

[0087] In some implementations, the first time window may be an SSB measurement timing configuration (SMTC) window, where the SMTC may be used to limit the duration and period of UE measurements of specific resources, that is, during the SMTC period (or SMTC window), the terminal device may perform radio resource management measurements based on the configured SSB. At this point, it may be understood that the first time window includes the transmission time of the first SSB, that is, the first time period includes the transmission time of the first SSB.

[0088] In some implementations, the first SSB may be transmitted periodically in each of the one or more first time periods. Of course, in an embodiment of the present application, the first SSB may be transmitted aperiodically in each of the one or more first time periods.

[0089] In some implementations, if the first SSB is transmitted periodically, the first time period may include one or more transmission periods of the first SSB.

[0090] For ease of understanding, the following takes the third association relationship, which is the association relationship between the OD index and the index of the SMTC window, as an example, and combines Figure 5 to introduce the solution of the terminal device requesting SSB in an embodiment of the present application.

[0091] As shown in Figure 5, it is assumed that the third association relationship indicates that the index of the SMTC window associated with OD1 is SMTC 1, the index of the SMTC window associated with OD2 is SMTC 2, and the index of the SMTC window associated with OD3 is SMTC 3, and that the first SSB is periodically transmitted within the SMTC windows corresponding to SMTC1 to SMTC3. Accordingly, if the terminal device sends the first information through OD1, the index of the SMTC window determined based on the third association relationship is SMTC 1, and accordingly, the transmission time of the first SSB is within the SMTC window with an index of SMTC1. If the terminal device sends the first information through OD2, the index of the SMTC window determined based on the third association relationship is SMTC 2, and accordingly, the transmission time of the first SSB is within the SMTC window with an index of SMTC 2. If the terminal device sends the first information through OD3, the index of the SMTC window determined based on the third association relationship is SMTC 3, and accordingly, the transmission time of the first SSB is within the SMTC window with an index of SMTC 3.

[0092] It should be noted that, within the SMTC windows corresponding to SMTC1 to SMTC3 shown in FIG5 , the transmission period of the first SSB may be the same or different.

[0093] Implementation method 3-2, the first time period includes part or all of the transmission time of the first SSB.

[0094] In some implementations, the first time period is used to determine the transmission time of the first SSB. Therefore, the first time period is also called the effective time of the first SSB transmission, or also called the duration of the transmission of the first SSB.

[0095] In some implementations, the first time period may be represented by a time window (also referred to as a time domain window), and accordingly, the time window is also referred to as a “valid window”.

[0096] In some implementations, the first time period corresponds to one or more second time windows for detecting the first SSB.

[0097] In the embodiment of the present application, the time domain position between the first time period and the one or more second time windows is not limited. In some implementations, the one or more second time windows are located within the first time period. This is described below in conjunction with FIG6 .

[0098] In some other implementations, the time window with the latest time domain position among the one or more second time windows is the target time window. The target time window partially overlaps with the first time period in the time domain, and the transmission time of the first SSB in the target time window is within the first time period. Partial overlap can be understood as the end time of the first time period being earlier than the end time of the target time window, and the start time of the target time window being within the first time period, as described below in conjunction with FIG. 7 .

[0099] In some implementations, the second time window may be an SMTC window, wherein the SMTC is used to configure the duration and period that can be used to limit UE measurements on specific resources. That is, during the SMTC period (or SMTC window), the terminal device may perform wireless resource management measurements based on the configured SSB.

[0100] For ease of understanding, the following takes the third association relationship as the association relationship between the OD index and the valid window, and the second time window as the SMTC window as an example, and combines Figures 6 and 7 to introduce the solution of the terminal device requesting SSB in an embodiment of the present application.

[0101] As shown in Figure 6, assume that the third association relationship indicates that the valid window associated with OD1 is valid window 1, and that SMTC2-SMTC3 are located within valid window 1 in the time domain. In addition, the first SSB is periodically transmitted within SMTC2-SMTC3. Accordingly, if the terminal device sends the first information via OD1, it determines based on the third association relationship that the transmission time of the first SSB requested by the first information is within valid window 1. In this case, the terminal device can detect SMTC2-SMTC3 within valid window 1 to receive the first SSB. As shown in Figure 6, valid window 1 includes the entire transmission time of the first SSB.

[0102] As shown in Figure 7, it is assumed that the third association relationship indicates that the valid window associated with OD1 is valid window 2, and that SMTC2 is located within valid window 2 in the time domain. The time domain position of the first SSB transmitted in SMTC3 is within valid window 2. In addition, the first SSB is periodically transmitted within SMTC2 to SMTC3. Accordingly, if the terminal device sends the first information through OD1, it is determined based on the third association relationship that the transmission time of the first SSB requested by the first information is within valid window 2. At this time, the terminal device can detect SMTC2 to SMTC3 within valid window 2 to receive the first SSB. As shown in Figure 7, valid window 2 only contains part of the transmission time of the first SSB.

[0103] As described above, the first time period may correspond to one or more second time windows for monitoring the first SSB. Of course, in the embodiment of the present application, the first time period may correspond to one or more transmissions of the first SSB, that is, one or more first SSBs may be transmitted within the first time period. In this embodiment, the transmission of the first SSB may be independent of the second time window.

[0104] As shown in FIG8 , assuming that the third association relationship indicates that the valid window associated with OD1 is valid window 3, the first SSB is periodically transmitted within valid window 3. Accordingly, if the terminal device sends the first information via OD1, it is determined based on the third association relationship that the transmission time of the first SSB requested by the first information is within valid window 3. At this time, the terminal device can receive the first SSB within valid window 3.

[0105] In the solution described above in conjunction with Example 1, the first information is not limited. For example, the first information may include a physical random access channel (PRACH). For another example, the first information may be any uplink control information (UCI).

[0106] Embodiment 2: The first SSB is directly indicated by the first information.

[0107] In some implementations, the first information is used to indicate one or more of the following: an identification of the terminal device; an index of the first SSB; and a first time period for transmitting the first SSB.

[0108] In the embodiments of the present application, the terminal device identifier is not limited. For example, the terminal device identifier may include a temporary mobile subscriber identity (TMSI). For another example, the terminal device identifier may include an international mobile subscriber identity (IMSI).

[0109] In some implementations, the first information may directly carry the index of the first SSB. Of course, in the embodiment of the present application, the first information may carry the index of the first reference signal. Accordingly, the index of the first reference signal may be used to determine the index of the first SSB. For example, the index of the first reference signal is the same as the index of the first SSB. For another example, the effect of the first SSB is obtained by increasing or decreasing the index of the first reference signal.

[0110] In some implementations, the first information may indicate the first time period by carrying an index of the first time period. For example, the first time period corresponds to a first time window, and the first information includes the index of the first time window. In other implementations, the first information may indicate the first time period by carrying information indicating the time domain position of the first time period. The time domain position of the first time period may include the starting time domain position of the first time period and / or the ending time domain position of the first time period.

[0111] In the embodiment of the present application, the meaning of the first time period is similar to that of the first time period in Example 1. For the introduction of the first time period, please refer to the relevant introduction in Example 1.

[0112] The above describes the content of the first information in the embodiment of the present application, and the following describes the transmission method of the first information in the embodiment of the present application. In some implementations, the first information is carried on a medium access control control element (MAC CE) and / or UCI. Taking the first information carried on the MAC CE as an example, the MAC CE can be carried on a physical uplink shared channel (PUSCH). Taking the first information carried on the UCI as an example, the UCI can be carried on a physical uplink control channel (PUCCH) and / or PUSCH.

[0113] In some scenarios, a first reference signal may be transmitted before sending the first SSB, wherein the first reference signal can be used for the terminal device to perform initial synchronization, or in other words, the first reference signal can be used for initial synchronization between the terminal device and the network device.

[0114] In some implementations, the first SSB with the same index and the first reference signal have a QCL relationship, or in other words, the beam direction between the first SSB with the same index and the first reference signal is the same, which helps the terminal device determine the beam direction of the first SSB.

[0115] In some implementations, the transmission period of the first SSB is different from the transmission period of the first reference signal. For example, the transmission period of the first SSB is less than the transmission period of the first reference signal, which helps reduce the power consumption used by the network device to transmit the first reference signal. Taking the transmission period of the first SSB as 160ms as an example, the transmission period of the first reference signal can be greater than 160ms. Of course, in the embodiment of the present application, the transmission period of the first SSB can be greater than the transmission period of the first reference signal.

[0116] In some implementations, the number of symbols occupied by the first reference signal in the time domain is less than 4, which helps reduce the power consumption used by the network device to transmit the first reference signal.

[0117] In some implementations, the first reference signal includes a PSS and an SSS, and the first reference signal does not include a PBCH. Typically, the first reference signal is used for initial synchronization, and during the initial synchronization process, the terminal device may only perform coarse synchronization, and subsequent fine synchronization may be performed based on the first SSB. The PBCH can be used for fine synchronization of the terminal device. Therefore, in order to reduce the power consumption used by the network device to transmit the first reference signal, the PBCH may not be transmitted in the first reference signal. Of course, in an embodiment of the present application, the first reference signal may be an SSB, that is, the first reference signal may transmit the PBCH.

[0118] In some implementations, the transmit power of the first information is determined based on a roadbed loss estimated by the first reference signal.

[0119] In some implementations, if the configuration of the SCell indicates that the terminal device can assume that the SCell is synchronized with the primary cell (PCell), this means that the terminal device can communicate in the SCell based on the PCell timing. At this time, the network device may not send the first reference signal to the terminal device to reduce the overhead of transmitting the first reference signal.

[0120] In some implementations, the first reference signal may be configured by the network device for the terminal device. For example, the network device may send initial synchronization information to the terminal device to configure the first reference signal.

[0121] In some implementations, the initial synchronization information may include the frequency of the first reference signal and the fourth time window.

[0122] In some implementations, the frequency of the first reference signal may be used to indicate a transmission period of the first reference signal.

[0123] In some implementations, the fourth time window indicates a time for transmitting the first reference signal. Accordingly, the terminal device may detect the first reference signal during the fourth time window to achieve initial synchronization. Initial synchronization may include one or more of the following: acquiring a symbol boundary; acquiring a symbol index; acquiring a slot boundary; acquiring a slot index; acquiring a radio frame boundary; or acquiring a radio frame index.

[0124] In some implementations, the fourth time window can be an SMTC window.

[0125] In some implementations, the fourth time window may be periodic. In some scenarios, the transmission period of the first reference signal may be the same as the period of the fourth time window. Of course, in embodiments of the present application, the transmission period of the first reference signal may be different from the period of the fourth time window.

[0126] In some scenarios, the network device may not configure the fourth time window for the terminal device. In this case, the terminal device can select a fourth time window to detect the first reference signal, where the process of the terminal device selecting the fourth time window depends on the implementation of the terminal device.

[0127] In some implementations, the network device may indicate the index of the first reference signal and the transmission period of the first reference signal to the terminal device in SCell configuration radio resource control (RRC) signaling.

[0128] In some implementations, when the terminal device sends the first information, it may be assumed that N TA =0, where N TA The definition refers to the relevant introduction of the known protocol (for example, clause 38.211 4.3.2). Of course, in the embodiment of the present application, the terminal device can use the N provided by the PCell through the RRC message. TA value to configure the SCell and send the first information in the SCell.

[0129] As described above, in traditional communication systems, SSB is a signal that is transmitted periodically. This scheme for periodically transmitting SSB lacks flexibility. Therefore, to address the above issues, an embodiment of the present application provides a wireless communication method in which a network device can activate or deactivate the transmission of a first SSB using second information to improve the flexibility of the first SSB transmission.

[0130] It should be noted that the first SSB in the embodiment of the present application is the same as the first SSB described above, and reference may be made to the description above. In addition, in the embodiment of the present application, the first SSB may be combined with the first reference signal described above, and reference may be made to the description above.

[0131] FIG9 is a schematic flow chart of a wireless communication method according to another embodiment of the present application. The method shown in FIG9 includes step S910.

[0132] In step S910, the network device sends second information to the terminal device, where the second information is used to indicate one or more of the following: transmission or non-transmission of the first SSB; transmission or non-transmission of the first SSB within the second time period; and a period for transmission of the first SSB.

[0133] In some implementations, the second information is used to indicate the transmission of the first SSB, which can be understood as the second information being used to indicate activation of transmission of the first SSB. Accordingly, in some scenarios, if the second information indicates activation of transmission of the first SSB, the terminal device detects the first SSB.

[0134] In some implementations, the second information is used to indicate that the first SSB is not to be transmitted. This can be understood as the second information being used to indicate deactivation of transmission of the first SSB, or in other words, the second information being used to indicate deactivation of transmission of the first SSB. Accordingly, in some scenarios, if the second information indicates deactivation of transmission of the first SSB, the terminal device does not detect the first SSB, which helps save power consumption of the terminal device.

[0135] In some implementations, the second information is used to indicate that the first SSB is to be transmitted within the second time period. This can be understood as indicating that the second information is used to indicate activation of transmission of the first SSB within the second time period, or in other words, the second information is used to indicate activation of the second time period. Accordingly, in some scenarios, if the second information indicates activation of the second time period, the terminal device detects the first SSB within the second time period.

[0136] In some implementations, the second information is used to indicate that the first SSB is not transmitted within the second time period. This can be understood as indicating that the second information is used to indicate deactivation of transmission of the first SSB within the second time period, or that the second information is used to indicate deactivation of transmission of the first SSB within the second time period, or that the second information is used to indicate deactivation of the second time period. Accordingly, in some scenarios, if the second information indicates deactivation of the second time period, the terminal device does not detect the first SSB within the second time period, which helps save power consumption of the terminal device.

[0137] In some implementations, the second information carries the index of the first SSB to indicate the first SSB. Of course, in this embodiment of the present application, the second information may indicate the first SSB by carrying the index of the first reference signal, wherein the index of the first reference signal is used to determine the index of the first SSB. It should be understood that the first reference signal and the scheme for determining the index of the first SSB based on the index of the first reference signal can be referred to the above introduction.

[0138] It should be noted that, as described above, if the index of the first reference signal is the same as the index of the first SSB, the second information can be used to indicate activation or deactivation of the transmission of the first reference signal and the first SSB corresponding to the index. Of course, in an embodiment of the present application, the second information can only be used to indicate activation or deactivation of the transmission of the first SSB corresponding to the index.

[0139] In other implementations, the second information may only indicate activation or deactivation information, without carrying information indicating the first SSB (for example, the index of the first SSB). In this case, the first SSB associated with the second information can be determined based on the time domain position between the transmission resource of the second information and the first SSB. In some implementations, if the transmission resource of the second information is earlier than the transmission resource of the first SSB, and the transmission resource of the first SSB and the transmission resource of the second information are not separated by the transmission of the transmission resources of other SSBs, then the first SSB transmitted on the transmission resource is the first SSB associated with the second information, that is, the second information indicates the transmission of the first SSB when activating or deactivating it.

[0140] The following describes a scheme for activating or deactivating the first SSB in an embodiment of the present application in conjunction with FIG10. As shown in FIG10, if the second information is transmitted via transmission resource 1, and the transmission resource of SSB2 is later than that of transmission resource 1 in the time domain, and there are no transmission resources of other SSBs between transmission resource 1 and the transmission resource of SSB2, then the first SSB associated with the second information is SSB2. In other words, the second information can be used to indicate the activation or deactivation of the transmission of SSB2.

[0141] In an embodiment of the present application, the transmission resources of the second information and the transmission resources of the associated first SSB may be separated by the transmission resources of one or more other SSBs. The number of the transmission resources of the other SSBs may be determined based on one or more of the following: preset, predefined, or network device configuration.

[0142] In some implementations, the second time period is one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain. Of course, in the embodiment of the present application, the second time period may be non-periodically distributed in the time domain.

[0143] In some implementations, the second time period corresponds to a third time window, and the second information carries an index of the third time window.

[0144] In some implementations, the third time window is an SMTC window. Accordingly, the second information may carry an index of the SMTC window.

[0145] Of course, in an embodiment of the present application, the second information may only indicate activation or deactivation information, without carrying information indicating the second time period. In this case, the second time period associated with the second information may be determined based on the time domain position between the transmission resource of the second information and the second time period. In some implementations, if the transmission resource of the second information is earlier than the starting position of the second time period, and there is no other second time period between the second time period and the transmission resource of the second information, then the second time period is the second time period associated with the second information, that is, the second information indicates activation or deactivation of the transmission of the first SSB within the second time period.

[0146] The following describes, using the second time period as an SMTC window as an example, a scheme for activating or deactivating the second time period in an embodiment of the present application, in conjunction with Figure 11. As shown in Figure 11, if the second information is transmitted via transmission resource 1, SMTC2 is later than transmission resource 1 in the time domain, and there is no other SMTC window between transmission resource 1 and SMTC2, then the SMTC window associated with the second information is SMTC2. In other words, the second information can be used to indicate the activation or deactivation of SMTC2.

[0147] In an embodiment of the present application, the transmission resource of the second information and the associated second time period may be separated by one or more other second time periods, wherein the number of the other second time periods may be determined based on one or more of the following: preset, predefined, or network device configuration.

[0148] In some implementations, the first SSB is transmitted periodically during the second time period. Of course, in the embodiment of the present application, the first SSB is transmitted aperiodically during the second time period.

[0149] In some implementations, if the first SSB is transmitted periodically, the second time period may include one or more first SSB transmission periods.

[0150] In some implementations, if the second information indicates a period for transmitting the first SSB, the second information is used to indicate the period for transmitting the first SSB from among multiple periods. For example, the second information may carry an index of the period for transmitting the first SSB from among the multiple periods, thereby helping to reduce the overhead of transmitting the second information.

[0151] In some implementations, the multiple periods include a default period, which is used to indicate a period for transmitting the first SSB when the terminal device does not receive the second information. In some scenarios, the default period is also called a default period.

[0152] In the embodiment of the present application, there is no limitation on the method for obtaining the multiple periods. In some implementations, the multiple periods are configured by the network device for the terminal device. Of course, in the embodiment of the present application, the multiple periods can be predefined, or the multiple periods are preconfigured.

[0153] The following uses the second time period as the SMTC window as an example, and describes the scheme for activating or deactivating the transmission of the first SSB in an embodiment of the present application in conjunction with Figure 12. It is assumed that SMTC1 to SMTC3 are periodically distributed in the time domain with a period T, and that the first SSB in each SMTC is transmitted with a period t1. The index of the first SSB transmitted in SMTC1 and SMTC3 is SSB1, and the index of the first SSB transmitted in SMTC2 is SSB2.

[0154] As shown in Figure 12, the network device sends a second message to the terminal device in time domain resource 1, where the second message indicates activation of the first SSB with a transmission index of SSB2. Accordingly, the terminal device detects the first SSB with an index of SSB2 in SMTC2. Thereafter, the network device sends a second message to the terminal device in time domain resource 2, indicating deactivation of the first SSB with a transmission index of SSB2.

[0155] The above describes the second information in the embodiment of the present application. The following describes the transmission method of the second information in the embodiment of the present application. In some implementations, the second information can be carried in a MAC CE or downlink control information (DCI). Taking the second information carried in DCI as an example, the DCI can be carried in a physical downlink control channel (PDCCH) or a group-common PDCCH.

[0156] In some implementations, the second information may be transmitted via the PCell and / or the SCell.

[0157] The above describes the related schemes for the first information and the related schemes for the second information in the embodiments of the present application. In some scenarios, the related schemes for the first information and the related schemes for the second information can be used separately. In other scenarios, the related schemes for the first information and the related schemes for the second information can be used in combination with each other. The following describes the related schemes for the second information in combination with implementation method 3-1 in Example 1 as an example.

[0158] In some implementations, if the terminal device sends first information to the network device to request a first SSB, the network device may send second information to the terminal device to instruct it to receive the first SSB within a first time period. Accordingly, in response to receiving the second information, the terminal device receives the first SSB within the first time period.

[0159] In some implementations, the second information indicating reception of the first SSB within the first time period may include second information indicating activation of the first time period to receive the first SSB.

[0160] In some implementations, if the third transmission resource is associated with multiple first time periods, the above method also includes: the terminal device receives second information (also called third information) sent by the network device on the fourth transmission resource, which is used to indicate to stop receiving the first SSB in the first time period (also called "target time period") that is later than the fourth transmission resource in the time domain.

[0161] In some implementations, the second information is used to indicate deactivation to stop receiving the first SSB during a target time period.

[0162] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 12. The device embodiment of the present application is described in detail below in conjunction with Figures 13 to 17. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0163] FIG13 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 1300 shown in FIG13 includes: a sending unit 1310 .

[0164] The sending unit 1310 is used to send first information to the network device, where the first information is used to request the network device to send a first SSB.

[0165] In some implementations, the first information is sent via a first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and a first association relationship, where the first association relationship is used to indicate an association relationship between the transmission resource and one or more SSB indexes.

[0166] In some implementations, the first information is sent via a second transmission resource, the SSB index of the first SSB is determined based on the index of the first reference signal, the index of the first reference signal is determined based on the second transmission resource and a second association relationship, and the second association relationship is used to indicate an association relationship between the transmission resource and the index of one or more first reference signals.

[0167] In some implementations, the first information is sent through a third transmission resource, and the first time period corresponding to the first SSB is determined based on the third transmission resource and a third association relationship. The third association relationship is used to indicate the association relationship between the transmission resource and one or more first time periods, and the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB.

[0168] In some implementations, if the third association relationship is used to indicate that the third transmission resource is associated with multiple first time periods, the multiple first time periods are periodically arranged in the time domain.

[0169] In some implementations, each first time period of the one or more first time periods corresponds to a first time window, and the third association relationship is used to indicate an association relationship between the transmission resource and an index of one or more first time windows.

[0170] In some implementations, the first time window is an SMTC window.

[0171] In some implementations, the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB, including transmitting the first SSB within the first time period corresponding to the first SSB.

[0172] In some implementations, the terminal device further includes: a first receiving unit for receiving second information sent by the network device, wherein the second information is used to indicate detection of the first SSB within a first time period corresponding to the first SSB; and a processing unit for detecting the first SSB within the first time period corresponding to the first SSB in response to receiving the second information.

[0173] In some implementations, the second information is used to indicate activation of a first time period corresponding to the first SSB to detect the first SSB.

[0174] In some implementations, if the third transmission resource is associated with multiple first time periods, the sending unit is further used to: receive third information sent by the network device on the fourth transmission resource, the third information being used to indicate to stop detecting the first SSB within a target time period, the target time period being the first time period in the first time period corresponding to the first SSB that is later than the fourth transmission resource in the time domain.

[0175] In some implementations, the third information is used to indicate deactivation of the target time period to stop detecting the first SSB.

[0176] In some implementations, the third association relationship is used to indicate an association relationship between the transmission resource and a start time of one or more first time periods.

[0177] In some implementations, the first time period corresponds to one or more second time windows for detecting the first SSB.

[0178] In some implementations, the one or more second time windows are located within the first time period.

[0179] In some implementations, the second time window with the latest time domain position among the one or more second time windows is the target time window, the target time window partially overlaps with the first time period in the time domain, and the transmission time of the first SSB in the target time window is within the first time period.

[0180] In some implementations, the second time window is an SMTC window.

[0181] In some implementations, one or more of the first SSBs are transmitted during the first time period.

[0182] In some implementations, the duration of the one or more first time periods is predefined or preconfigured.

[0183] In some implementations, the first information includes PRACH.

[0184] In some implementations, the first information is used to indicate one or more of the following: an identification of the terminal device; an index of the first SSB; and a first time period for transmitting the first SSB.

[0185] In some implementations, the first time period corresponds to a first time window, and the first information is used to indicate an index of the first time window.

[0186] In some implementations, the first information is carried in a media access control element MAC CE and / or uplink control information UCI.

[0187] In some implementations, the first SSB with the same index has a QCL relationship with a first reference signal, and the first reference signal is used for initial synchronization of the terminal device.

[0188] In some implementations, the transmission period of the first SSB is less than the transmission period of a first reference signal, and the first reference signal is used for initial synchronization of the terminal device.

[0189] In some implementations, the transmission power of the first information is determined based on a roadbed loss estimated by a first reference signal, and the first reference signal is used for initial synchronization of the terminal device.

[0190] In some implementations, the number of symbols occupied by the first reference signal in the time domain is less than 4; and / or the first reference signal includes a primary synchronization signal PSS and a secondary synchronization signal SSS, and the first reference signal does not include PBCH.

[0191] In some implementations, the first SSB is transmitted within the second cell, and the first information is transmitted in the first cell and / or the second cell.

[0192] FIG14 is a schematic diagram of a network device according to an embodiment of the present application. The network device 1400 shown in FIG14 includes: a receiving unit 1410 .

[0193] The receiving unit 1410 is used to receive first information sent by the terminal device, where the first information is used to request the network device to send a first SSB.

[0194] In some implementations, the first information is sent via a first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and a first association relationship, where the first association relationship is used to indicate an association relationship between the transmission resource and one or more SSB indexes.

[0195] In some implementations, the first information is sent via a second transmission resource, the SSB index of the first SSB is determined based on the index of the first reference signal, the index of the first reference signal is determined based on the second transmission resource and a second association relationship, and the second association relationship is used to indicate an association relationship between the transmission resource and the index of one or more first reference signals.

[0196] In some implementations, the first information is sent through a third transmission resource, and the first time period corresponding to the first SSB is determined based on the third transmission resource and a third association relationship. The third association relationship is used to indicate the association relationship between the transmission resource and one or more first time periods, and the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB.

[0197] In some implementations, if the third association relationship is used to indicate that the third transmission resource is associated with multiple first time periods, the multiple first time periods are periodically arranged in the time domain.

[0198] In some implementations, each first time period of the one or more first time periods corresponds to a first time window, and the third association relationship is used to indicate an association relationship between the transmission resource and an index of one or more first time windows.

[0199] In some implementations, the first time window is an SMTC window.

[0200] In some implementations, the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB, including transmitting the first SSB within the first time period corresponding to the first SSB.

[0201] In some implementations, the network device further includes: a first sending unit, configured to send second information to the terminal device, wherein the second information is configured to indicate reception of the first SSB within a first time period corresponding to the first SSB.

[0202] In some implementations, the second information is used to indicate activation of a first time period corresponding to the first SSB to detect the first SSB.

[0203] In some implementations, if the third transmission resource is associated with multiple first time periods, the network device further includes: a second sending unit, used to send third information to the terminal device on the fourth transmission resource, the third information being used to indicate to stop detecting the first SSB within a target time period, the target time period being the first time period in the first time period corresponding to the first SSB that is later than the fourth transmission resource in the time domain.

[0204] In some implementations, the third information is used to indicate deactivation of the target time period to stop detecting the first SSB.

[0205] In some implementations, the third association relationship is used to indicate an association relationship between the transmission resource and a start time of one or more first time periods.

[0206] In some implementations, the first time period corresponds to one or more second time windows for detecting the first SSB.

[0207] In some implementations, the one or more second time windows are located within the first time period.

[0208] In some implementations, the second time window with the latest time domain position among the one or more second time windows is the target time window, the target time window partially overlaps with the first time period in the time domain, and the transmission time of the first SSB in the target time window is within the first time period.

[0209] In some implementations, the second time window is an SMTC window.

[0210] In some implementations, one or more of the first SSBs are transmitted during the first time period.

[0211] In some implementations, the duration of the one or more first time periods is predefined or preconfigured.

[0212] In some implementations, the first information includes PRACH.

[0213] In some implementations, the first information is used to indicate one or more of the following: an identification of the terminal device; an index of the first SSB; and a first time period for transmitting the first SSB.

[0214] In some implementations, the first time period corresponds to a first time window, and the first information is used to indicate an index of the first time window.

[0215] In some implementations, the first information is carried in a media access control element MAC CE and / or uplink control information UCI.

[0216] In some implementations, the first SSB with the same index has a QCL relationship with a first reference signal, and the first reference signal is used for initial synchronization of the terminal device.

[0217] In some implementations, the transmission period of the first SSB is less than the transmission period of a first reference signal, and the first reference signal is used for initial synchronization of the terminal device.

[0218] In some implementations, the transmission power of the first information is determined based on a roadbed loss estimated by a first reference signal, and the first reference signal is used for initial synchronization of the terminal device.

[0219] In some implementations, the number of symbols occupied by the first reference signal in the time domain is less than 4; and / or the first reference signal includes a primary synchronization signal PSS and a secondary synchronization signal SSS, and the first reference signal does not include PBCH.

[0220] In some implementations, the first SSB is transmitted within the second cell, and the first information is transmitted in the first cell and / or the second cell.

[0221] FIG15 is a schematic diagram of a terminal device according to another embodiment of the present application. The terminal device 1500 shown in FIG15 includes: a receiving unit 1510 .

[0222] The receiving unit 1510 is used to receive second information sent by the network device, where the second information is used to indicate one or more of the following: transmission or non-transmission of the first SSB; transmission or non-transmission of the first SSB within a second time period; and a period for transmitting the first SSB.

[0223] In some implementations, the second information used to indicate the transmission of the first SSB includes the second information used to indicate the activation of the transmission of the first SSB; the second information used to indicate the non-transmission of the first SSB includes the second information used to indicate the deactivation of the transmission of the first SSB; the second information used to indicate the transmission of the first SSB within the second time period includes the second information used to indicate the activation of the transmission of the first SSB within the second time period; the second information used to indicate the non-transmission of the first SSB within the second time period includes the second information used to indicate the deactivation of the transmission of the first SSB within the second time period.

[0224] In some implementations, the second information carries an index of the first SSB.

[0225] In some implementations, the second time period belongs to one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain.

[0226] In some implementations, the second time period corresponds to a third time window, and the second information carries an index of the third time window.

[0227] In some implementations, the third time window is an SMTC window.

[0228] In some implementations, the first SSB is periodically transmitted during the second time period.

[0229] In some implementations, the second information used to indicate a period for transmitting the first SSB includes the second information used to indicate a period for transmitting the first SSB from a plurality of periods.

[0230] In some implementations, the multiple periods include a default period, which is used to indicate a period for transmitting the first SSB when the terminal device does not receive the second information.

[0231] In some implementations, the multiple periods are configured by the network device for the terminal device.

[0232] FIG16 is a schematic diagram of a network device according to another embodiment of the present application. The network device 1600 shown in FIG16 includes a sending unit 1610 .

[0233] The sending unit 1610 is used to send second information to the terminal device, where the second information is used to indicate one or more of the following: transmission or non-transmission of the first SSB; transmission or non-transmission of the first SSB within the second time period; and the period of transmission of the first SSB.

[0234] In some implementations, the second information used to indicate the transmission of the first SSB includes the second information used to indicate the activation of the transmission of the first SSB; the second information used to indicate the non-transmission of the first SSB includes the second information used to indicate the deactivation of the transmission of the first SSB; the second information used to indicate the transmission of the first SSB within the second time period includes the second information used to indicate the activation of the transmission of the first SSB within the second time period; the second information used to indicate the non-transmission of the first SSB within the second time period includes the second information used to indicate the deactivation of the transmission of the first SSB within the second time period.

[0235] In some implementations, the second information carries an index of the first SSB.

[0236] In some implementations, the second time period belongs to one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain.

[0237] In some implementations, the second time period corresponds to a third time window, and the second information carries an index of the third time window.

[0238] In some implementations, the third time window is an SMTC window.

[0239] In some implementations, the first SSB is periodically transmitted during the second time period.

[0240] In some implementations, the second information used to indicate a period for transmitting the first SSB includes the second information used to indicate a period for transmitting the first SSB from a plurality of periods.

[0241] In some implementations, the multiple periods include a default period, which is used to indicate a period for transmitting the first SSB when the terminal device does not receive the second information.

[0242] In some implementations, the multiple periods are configured by the network device for the terminal device.

[0243] In an optional embodiment, the sending unit 1310 may be a transceiver 1730. The terminal device 1300 may further include a processor 1710 and a memory 1720, as specifically shown in FIG17 .

[0244] In an optional embodiment, the receiving unit 1410 may be a transceiver 1730. The network device 1400 may further include a processor 1710 and a memory 1720, as specifically shown in FIG17 .

[0245] In an optional embodiment, the receiving unit 1510 may be a transceiver 1730. The terminal device 1500 may further include a processor 1710 and a memory 1720, as specifically shown in FIG17 .

[0246] In an optional embodiment, the sending unit 1610 may be a transceiver 1730. The network device 900 may further include a processor 1710 and a memory 1720, as specifically shown in FIG17 .

[0247] Figure 17 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 17 indicate that the unit or module is optional. Device 1700 may be used to implement the method described in the above method embodiment. Device 1700 may be a chip, a terminal device, or a network device.

[0248] The device 1700 may include one or more processors 1710. The processor 1710 may support the device 1700 to implement the method described in the method embodiment above. The processor 1710 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0249] The apparatus 1700 may further include one or more memories 1720. The memories 1720 store programs that can be executed by the processor 1710, causing the processor 1710 to perform the methods described in the above method embodiments. The memories 1720 may be independent of the processor 1710 or integrated into the processor 1710.

[0250] The apparatus 1700 may further include a transceiver 1730. The processor 1710 may communicate with other devices or chips via the transceiver 1730. For example, the processor 1710 may transmit and receive data with other devices or chips via the transceiver 1730.

[0251] 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 or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0252] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0253] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0254] It should be understood that in the embodiments of the present application, the transmission resources may include one or more of the following: time domain resources, frequency domain resources, and code domain resources.

[0255] In addition, the terms "system" and "network" can be used interchangeably in this application. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this 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 variations thereof are intended to cover non-exclusive inclusions.

[0256] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0257] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0258] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0259] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0260] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications 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.

[0261] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. 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 document generally indicates that the related objects are in an "or" relationship.

[0262] 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.

[0263] In the several embodiments provided in this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0264] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0265] 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.

[0266] 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 can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can 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 therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0267] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for wireless communication, characterized in that, Including: The terminal device sends first information to the network device, where the first information is used to request the network device to send a first Synchronization Signal Broadcast Channel Block (SSB).

2. The method according to claim 1, characterized in that, The first information is sent through a first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and a first association relationship, where the first association relationship is used to indicate the association relationship between the transmission resource and one or more SSB indexes.

3. The method according to claim 1, wherein The first information is sent through a second transmission resource, and the SSB index of the first SSB is determined based on the index of a first reference signal, where the index of the first reference signal is determined based on the second transmission resource and a second association relationship, and the second association relationship is used to indicate the association relationship between the transmission resource and one or more indexes of the first reference signal.

4. The method according to claim 1, characterized in that The first information is sent through a third transmission resource, and the first time period corresponding to the first SSB is determined based on the third transmission resource and a third association relationship, where the third association relationship is used to indicate the association relationship between the transmission resource and one or more first time periods, and the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB.

5. The method according to claim 4, wherein If the third association relationship is used to indicate that the third transmission resource is associated with multiple first time periods, the multiple first time periods are arranged periodically in the time domain.

6. The method according to claim 4 or 5, characterized in that, Each of the one or more first time periods corresponds to a first time window, and the third association relationship is used to indicate the association relationship between the transmission resource and the indexes of one or more of the first time windows.

7. The method according to claim 6, characterized in that, The first time window is a Synchronization Master Timing Control (SMTC) window.

8. The method according to any one of claims 4-7, characterized in that, That the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB includes transmitting the first SSB within the first time period corresponding to the first SSB.

9. The method according to any one of claims 4 to 8, characterized in that The method further includes: The terminal device receives second information sent by the network device, where the second information is used to indicate detecting the first SSB within the first time period corresponding to the first SSB; In response to receiving the second information, the terminal device detects the first SSB within the first time period corresponding to the first SSB.

10. The method according to claim 9, wherein The second information is used to indicate activating the first time period corresponding to the first SSB to detect the first SSB.

11. The method according to any one of claims 4 to 8, characterized in that, If the third transmission resource is associated with multiple first time periods, the method further includes: The terminal device receives third information sent by the network device on a fourth transmission resource, where the third information is used to indicate stopping detecting the first SSB within a target time period, and the target time period is the first time period in the time domain that is later than the fourth transmission resource among the first time periods corresponding to the first SSB.

12. The method according to claim 11, wherein The third information is used to indicate deactivating the target time period to stop detecting the first SSB.

13. The method according to claim 4, wherein The third association relationship is used to indicate the association relationship between the transmission resource and the start times of one or more first time periods.

14. The method according to claim 13, wherein The first time period corresponds to one or more second time windows for detecting the first SSB.

15. The method according to claim 14, wherein The one or more second time windows are within the first time period.

16. The method according to claim 14, wherein The second time window with the latest time domain position among the one or more second time windows is the target time window. The target time window overlaps with the first time period in the time domain, and the transmission time of the first SSB in the target time window is within the first time period.

17. The method according to any one of claims 14 to 16, characterized in that, The second time window is the SMTC window.

18. The method according to claim 13, characterized in that One or more of the first SSBs are transmitted within the first time period.

19. The method according to any one of claims 4 to 18, characterized in that The duration of the one or more first time periods is predefined or preconfigured.

20. The method according to any one of claims 1-19, characterized in that, The first information includes PRACH.

21. The method according to claim 1, wherein The first information is used to indicate one or more of the following: The identifier of the terminal device; The index of the first SSB; The first time period for transmitting the first SSB.

22. The method according to claim 21, wherein The first time period corresponds to a first time window, and the first information is used to indicate the index of the first time window.

23. The method according to claim 21 or 22, characterized in that, The first information is carried on the media access control control element MAC CE and / or the uplink control information UCI.

24. The method according to any one of claims 1 to 23, characterized in that, There is a QCL relationship between the first SSB with the same index and the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

25. The method according to any one of claims 1-24, characterized in that, The transmission period of the first SSB is less than the transmission period of the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

26. The method according to any one of claims 1-25, characterized in that, The transmit power of the first information is determined based on the path loss estimated by the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

27. The method according to any one of claims 3, 24 - 26, characterized in that The number of symbols occupied by the first reference signal in the time domain is less than 4; and / or The first reference signal includes the primary synchronization signal PSS and the secondary synchronization signal SSS, and the first reference signal does not include PBCH.

28. The method according to any one of claims 1-27, characterized in that, The first SSB is transmitted in the second cell, and the first information is transmitted in the first cell and / or the second cell.

29. A method for wireless communication, characterized in that, Including: The network device receives the first information sent by the terminal device, and the first information is used to request the network device to send the first SSB.

30. The method according to claim 29, wherein The first information is sent through the first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and the first association relationship, and the first association relationship is used to indicate the association relationship between the transmission resource and one or more SSB indexes.

31. The method according to claim 29, wherein The first information is sent through the second transmission resource, and the SSB index of the first SSB is determined based on the index of the first reference signal, and the index of the first reference signal is determined based on the second transmission resource and the second association relationship, and the second association relationship is used to indicate the association relationship between the transmission resource and one or more indexes of the first reference signal.

32. The method according to claim 29, wherein, The first information is sent through the third transmission resource, and the first time period corresponding to the first SSB is determined based on the third transmission resource and the third association relationship, and the third association relationship is used to indicate the association relationship between the transmission resource and one or more first time periods, and the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB.

33. The method according to claim 32, wherein, If the third association relationship is used to indicate that the third transmission resource is associated with multiple first time periods, the multiple first time periods are arranged periodically in the time domain.

34. The method according to claim 32 or 33, characterized in that Each of the one or more first time periods corresponds to a first time window, and the third association relationship is used to indicate the association relationship between the transmission resource and the indexes of one or more of the first time windows.

35. The method according to claim 34, characterized in that, The first time window is an SMTC window.

36. The method according to any one of claims 32-35, characterized in that, The first time period corresponding to the first SSB is used to determine that the transmission time of the first SSB includes transmitting the first SSB within the first time period corresponding to the first SSB.

37. The method according to any one of claims 32 - 36, characterized in that, The method further includes: The network device sends second information to the terminal device, and the second information is used to indicate receiving the first SSB within the first time period corresponding to the first SSB.

38. The method according to claim 37, wherein The second information is used to indicate activating the first time period corresponding to the first SSB to detect the first SSB.

39. The method according to any one of claims 32 - 36, characterized in that, If the third transmission resource is associated with multiple first time periods, the method further includes: The network device sends third information to the terminal device on a fourth transmission resource, and the third information is used to indicate stopping detecting the first SSB within a target time period, and the target time period is the first time period that is later in time domain than the fourth transmission resource among the first time periods corresponding to the first SSB.

40. The method according to claim 39, wherein The third information is used to indicate deactivating the target time period to stop detecting the first SSB.

41. The method according to claim 32, wherein The third association relationship is used to indicate the association relationship between the transmission resource and the start times of one or more first time periods.

42. The method according to claim 41, wherein The first time period corresponds to one or more second time windows for detecting the first SSB.

43. The method according to claim 42, characterized in that, The one or more second time windows are located within the first time period.

44. The method according to claim 42, wherein The second time window with the latest time domain position among the one or more second time windows is the target time window. The target time window overlaps with the first time period partially in time domain, and the transmission time of the first SSB in the target time window is within the first time period.

45. The method according to any one of claims 42 - 44, characterized in that, The second time window is an SMTC window.

46. The method according to claim 41, wherein One or more of the first SSBs are transmitted within the first time period.

47. The method according to any one of claims 32-46, characterized in that, The duration of the one or more first time periods is predefined or preconfigured.

48. The method according to any one of claims 29-47, characterized in that, The first information includes PRACH.

49. The method according to claim 29, wherein The first information is used to indicate one or more of the following: The identifier of the terminal device; The index of the first SSB; The first time period for transmitting the first SSB.

50. The method according to claim 49, wherein The first time period corresponds to a first time window, and the first information is used to indicate the index of the first time window.

51. The method according to claim 49 or 50, characterized in that, The first information is carried on a media access control control element MAC CE and / or uplink control information UCI.

52. The method according to any one of claims 29-51, characterized in that, There is a QCL relationship between the first SSB with the same index and the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

53. The method according to any one of claims 29 to 52, characterized in that, The transmission period of the first SSB is less than the transmission period of the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

54. The method according to any one of claims 29 - 53, characterized in that, The transmission power of the first information is determined based on the path loss estimated by the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

55. The method according to any one of claims 31, 52 - 54, characterized in that, The number of symbols occupied by the first reference signal in the time domain is less than 4; and / or The first reference signal includes a primary synchronization signal PSS and a secondary synchronization signal SSS, and the first reference signal does not include PBCH.

56. The method according to any one of claims 29 - 55, characterized in that, The first SSB is transmitted in a second cell, and the first information is transmitted in a first cell and / or the second cell.

57. A method for wireless communication, characterized in that, Comprising: A terminal device receives second information sent by a network device, and the second information is used to indicate one or more of the following: Transmit or not transmit the first SSB; Transmit or not transmit the first SSB within a second time period; The period of transmitting the first SSB.

58. The method according to claim 57, wherein: The second information being used to indicate transmitting the first SSB includes that the second information is used to indicate activating the transmission of the first SSB; The second information being used to indicate not transmitting the first SSB includes that the second information is used to indicate deactivating the transmission of the first SSB; The second information being used to indicate transmitting the first SSB within a second time period includes that the second information is used to indicate activating the transmission of the first SSB within the second time period; The second information being used to indicate not transmitting the first SSB within a second time period includes that the second information is used to indicate deactivating the transmission of the first SSB within the second time period.

59. The method according to claim 57 or 58, characterized in that, The second information carries an index of the first SSB.

60. The method according to any one of claims 57 - 59, characterized in that, The second time period belongs to one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain.

61. The method according to any one of claims 57 - 60, characterized in that, The second time period corresponds to a third time window, and the second information carries an index of the third time window.

62. The method according to claim 61, wherein, The third time window is an SMTC window.

63. The method according to any one of claims 57 - 62, characterized in that, The first SSB is periodically transmitted within the second time period.

64. The method according to any one of claims 57-63, characterized in that, The second information being used to indicate the period of transmitting the first SSB includes that the second information is used to indicate the period of transmitting the first SSB from a plurality of periods.

65. The method according to claim 64, wherein The plurality of periods includes a default period, and the default period is used to indicate the period of transmitting the first SSB when the terminal device does not receive the second information.

66. The method according to claim 64 or 65, characterized in that, The plurality of periods are configured by the network device for the terminal device.

67. A method for wireless communication, characterized in that, Comprising: Second information sent by a network device to a terminal device, and the second information is used to indicate one or more of the following: Transmit or not transmit the first SSB; Transmit or not transmit the first SSB within a second time period; The period of transmitting the first SSB.

68. The method according to claim 67, wherein: The second information being used to indicate transmitting the first SSB includes that the second information is used to indicate activating the transmission of the first SSB; The second information being used to indicate not transmitting the first SSB includes that the second information is used to indicate deactivating the transmission of the first SSB; The second information being used to indicate transmitting the first SSB within a second time period includes that the second information is used to indicate activating the transmission of the first SSB within the second time period; The second information being used to indicate not transmitting the first SSB within a second time period includes that the second information is used to indicate deactivating the transmission of the first SSB within the second time period.

69. The method according to claim 67 or 68, characterized in that, The second information carries an index of the first SSB.

70. The method according to any one of claims 67 - 69, characterized in that, The second time period belongs to one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain.

71. The method according to any one of claims 67 - 70, characterized in that, The second time period corresponds to a third time window, and the second information carries an index of the third time window.

72. The method according to claim 71, characterized in that, The third time window is an SMTC window.

73. The method according to any one of claims 67-72, characterized in that, The first SSB is transmitted periodically within the second time period.

74. The method according to any one of claims 67-73, characterized in that, The second information is used to indicate the period for transmitting the first SSB, including that the second information is used to indicate the period for transmitting the first SSB from a plurality of periods.

75. The method according to claim 74, wherein The plurality of periods include a default period, and the default period is used to indicate the period for transmitting the first SSB when the terminal device does not receive the second information.

76. The method according to claim 74 or 75, characterized in that, The plurality of periods are configured by the network device for the terminal device.

77. A terminal device, characterized in that, Comprising: A sending unit, configured to send first information to a network device, where the first information is used to request the network device to send a first SSB.

78. The terminal device according to claim 77, wherein The first information is sent through a first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and a first association relationship, where the first association relationship is used to indicate the association relationship between the transmission resource and one or more SSB indexes.

79. The terminal device according to claim 77, characterized in that, The first information is sent through a second transmission resource, and the SSB index of the first SSB is determined based on the index of a first reference signal, where the index of the first reference signal is determined based on the second transmission resource and a second association relationship, and the second association relationship is used to indicate the association relationship between the transmission resource and one or more indexes of the first reference signal.

80. The terminal device according to claim 77, wherein The first information is sent through a third transmission resource, and the first time period corresponding to the first SSB is determined based on the third transmission resource and a third association relationship, where the third association relationship is used to indicate the association relationship between the transmission resource and one or more first time periods, and the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB.

81. The terminal device according to claim 80, characterized in that, If the third association relationship is used to indicate that the third transmission resource is associated with a plurality of first time periods, the plurality of first time periods are periodically arranged in the time domain.

82. The terminal device according to claim 80 or 81, characterized in that, Each of the one or more first time periods corresponds to a first time window, and the third association relationship is used to indicate the association relationship between the transmission resource and the indexes of one or more of the first time windows.

83. The terminal device according to claim 82, wherein The first time window is an SMTC window.

84. The terminal device according to any one of claims 80-83, characterized in that, That the first time period corresponding to the first SSB is used to determine the transmission time of the first SSB includes transmitting the first SSB within the first time period corresponding to the first SSB.

85. The terminal device according to any one of claims 80-84, characterized in that, The terminal device further includes: A first receiving unit, configured to receive second information sent by the network device, where the second information is used to indicate detecting the first SSB within the first time period corresponding to the first SSB; A processing unit, configured to detect the first SSB within the first time period corresponding to the first SSB in response to receiving the second information.

86. The terminal device according to claim 85, characterized in that, The second information is used to indicate activating the first time period corresponding to the first SSB to detect the first SSB.

87. The terminal device according to any one of claims 80-84, characterized in that, If the third transmission resource is associated with multiple first time periods, the sending unit is further configured to: Receive third information sent by the network device on a fourth transmission resource, where the third information is used to indicate stopping detecting the first SSB within a target time period, and the target time period is a first time period in the first time periods corresponding to the first SSB that is later than the fourth transmission resource in time domain.

88. The terminal device according to claim 87, wherein The third information is used to indicate deactivating the target time period to stop detecting the first SSB.

89. The terminal device according to claim 80, characterized in that, The third association relationship is used to indicate the association relationship between the transmission resource and the start times of one or more first time periods.

90. The terminal device according to claim 89, wherein The first time period corresponds to one or more second time windows for detecting the first SSB.

91. The terminal device according to claim 90, wherein The one or more second time windows are within the first time period.

92. The terminal device according to claim 90, characterized in that, The second time window with the latest time domain position among the one or more second time windows is the target time window, the target time window partially overlaps with the first time period in time domain, and the transmission time of the first SSB in the target time window is within the first time period.

93. The terminal device according to any one of claims 90-92, characterized in that, The second time window is an SMTC window.

94. The terminal device according to claim 89, characterized in that, Transmit one or more of the first SSBs within the first time period. The terminal device according to any one of claims 80 to 94, characterized in that The duration of the one or more first time periods is predefined or preconfigured.

96. The terminal device according to any one of claims 77-95, characterized in that, The first information includes PRACH.

97. The terminal device according to claim 77, wherein The first information is used to indicate one or more of the following: The identifier of the terminal device; The index of the first SSB; The first time period for transmitting the first SSB.

98. The terminal device according to claim 97, wherein The first time period corresponds to a first time window, and the first information is used to indicate the index of the first time window.

99. The terminal device according to claim 97 or 98, characterized in that, The first information is carried on a media access control control element MAC CE and / or uplink control information UCI.

100. The terminal device according to any one of claims 77-99, characterized in that, There is a QCL relationship between the first SSB with the same index and a first reference signal, and the first reference signal is used by the terminal device for initial synchronization.

101. The terminal device according to any one of claims 77-100, characterized in that, The transmission period of the first SSB is less than the transmission period of the first reference signal, and the first reference signal is used by the terminal device for initial synchronization.

102. The terminal device according to any one of claims 77-101, characterized in that, The transmission power of the first information is determined based on the path loss estimated by the first reference signal, and the first reference signal is used by the terminal device for initial synchronization.

103. The terminal device according to any one of claims 79, 100 - 102, characterized in that, The number of symbols occupied by the first reference signal in time domain is less than 4; and / or The first reference signal includes a primary synchronization signal PSS and a secondary synchronization signal SSS, and the first reference signal does not include a PBCH.

104. The terminal device according to any one of claims 77-103, characterized in that, The first SSB is transmitted in a second cell, and the first information is transmitted in a first cell and / or the second cell.

105. A network device, characterized in that, Includes: A receiving unit, configured to receive first information sent by a terminal device, where the first information is used to request the network device to send a first SSB.

106. The network device according to claim 105, characterized in that, The first information is sent through a first transmission resource, and the SSB index of the first SSB is determined based on the first transmission resource and a first association relationship, and the first association relationship is used to indicate the association relationship between the transmission resource and one or more SSB indexes.

107. The network device according to claim 105, characterized in that, The first information is sent through a second transmission resource. The SSB index of the first SSB is determined based on the index of a first reference signal. The index of the first reference signal is determined based on the second transmission resource and a second association relationship, where the second association relationship is used to indicate the association relationship between the transmission resource and the indexes of one or more first reference signals.

108. The network device according to claim 105, characterized in that, The first information is sent through a third transmission resource. The first time period corresponding to the first SSB is determined based on the third transmission resource and a third association relationship, where the third association relationship is used to indicate the association relationship between the transmission resource and one or more first time periods. The first time period corresponding to the first SSB is used to determine the transmission time of the first SSB.

109. The network device according to claim 108, characterized in that, If the third association relationship is used to indicate that the third transmission resource is associated with multiple first time periods, the multiple first time periods are arranged periodically in the time domain.

110. The network device according to claim 108 or 109, characterized in that, Each of the one or more first time periods corresponds to a first time window. The third association relationship is used to indicate the association relationship between the transmission resource and the indexes of one or more of the first time windows.

111. The network device according to claim 110, characterized in that, The first time window is an SMTC window.

112. The network device according to any one of claims 108-111, characterized in that, The first time period corresponding to the first SSB being used to determine the transmission time of the first SSB includes transmitting the first SSB within the first time period corresponding to the first SSB.

113. The network device according to any one of claims 108-112, characterized in that, The network device further includes: A first sending unit, configured to send second information to the terminal device, where the second information is used to indicate receiving the first SSB within the first time period corresponding to the first SSB.

114. The network device according to claim 113, characterized in that, The second information is used to indicate activating the first time period corresponding to the first SSB to detect the first SSB.

115. The network device according to any one of claims 108-112, characterized in that, If the third transmission resource is associated with multiple first time periods, the network device further includes: A second sending unit, configured to send third information to the terminal device on a fourth transmission resource, where the third information is used to indicate stopping detecting the first SSB within a target time period, and the target time period is the first time period corresponding to the first SSB that is later than the fourth transmission resource in the time domain.

116. The network device according to claim 115, characterized in that, The third information is used to indicate deactivating the target time period to stop detecting the first SSB.

117. The network device according to claim 108, characterized in that, The third association relationship is used to indicate the association relationship between the transmission resource and the start times of one or more first time periods.

118. The network device according to claim 117, characterized in that, The first time period corresponds to one or more second time windows for detecting the first SSB.

119. The network device according to claim 118, characterized in that, The one or more second time windows are within the first time period.

120. The network device according to claim 118, characterized in that, The second time window with the latest time domain position among the one or more second time windows is the target time window. The target time window partially overlaps with the first time period in the time domain, and the transmission time of the first SSB in the target time window is within the first time period.

121. The network device according to any one of claims 118-120, characterized in that, The second time window is an SMTC window.

122. The network device according to claim 117, characterized in that, One or more of the first SSBs are transmitted within the first time period.

123. The network device according to any one of claims 108-122, characterized in that, The duration of the one or more first time periods is predefined or preconfigured.

124. The network device according to any one of claims 105 to 123, characterized in that, The first information includes a PRACH. The network device according to claim 105, characterized in that, The first information is used to indicate one or more of the following: The identifier of the terminal device; The index of the first SSB; The first time period for transmitting the first SSB.

126. The network device according to claim 125, characterized in that, The first time period corresponds to a first time window, and the first information is used to indicate the index of the first time window.

127. The network device according to claim 125 or 126, characterized in that, The first information is carried in the Media Access Control Control Element (MAC CE) and / or the Uplink Control Information (UCI). The network device according to any one of claims 105 to 127, characterized in that There is a Quasi-Co-Location (QCL) relationship between the first SSB with the same index and the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

129. The network device according to any one of claims 105-128, characterized in that, The transmission period of the first SSB is less than the transmission period of the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

130. The network device according to any one of claims 105-129, characterized in that, The transmission power of the first information is determined based on the path loss estimated by the first reference signal, and the first reference signal is used for the terminal device to perform initial synchronization.

131. The network device according to any one of claims 107, 128 - 130, characterized in that, The number of symbols occupied by the first reference signal in the time domain is less than 4; and / or The first reference signal includes the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS), and the first reference signal does not include the Physical Broadcast Channel (PBCH).

132. The network device according to any one of claims 105-131, characterized in that, The first SSB is transmitted in the second cell, and the first information is transmitted in the first cell and / or the second cell.

133. A terminal device, characterized in that, Comprising: A receiving unit, configured to receive second information sent by a network device, where the second information is used to indicate one or more of the following: Transmit or not transmit the first SSB; Transmit or not transmit the first SSB within a second time period; The period for transmitting the first SSB.

134. The terminal device according to claim 133, wherein: The second information for indicating the transmission of the first SSB includes that the second information is used to indicate activating the transmission of the first SSB; The second information for indicating not transmitting the first SSB includes that the second information is used to indicate deactivating the transmission of the first SSB; The second information for indicating transmitting the first SSB within a second time period includes that the second information is used to indicate activating the transmission of the first SSB within the second time period; The second information for indicating not transmitting the first SSB within a second time period includes that the second information is used to indicate deactivating the transmission of the first SSB within the second time period.

135. The terminal device according to claim 133 or 134, characterized in that, The second information carries the index of the first SSB. The terminal device according to any one of claims 133 to 135, characterized in that The second time period belongs to one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain. The terminal device according to any one of claims 133 to 136, characterized in that The second time period corresponds to a third time window, and the second information carries the index of the third time window.

138. The terminal device according to claim 137, wherein The third time window is the SMTC window. The terminal device according to any one of claims 133 to 138, characterized in that, The first SSB is periodically transmitted within the second time period. The terminal device according to any one of claims 133-139, characterized in that, The second information for indicating the period of transmitting the first SSB includes that the second information is used to indicate the period of transmitting the first SSB from a plurality of periods.

141. The terminal device according to claim 140, characterized in that, The plurality of periods include a default period, and the default period is used to indicate the period for transmitting the first SSB when the terminal device does not receive the second information. The terminal device according to claim 140 or 141, characterized in that, The plurality of periods are configured by the network device for the terminal device.

143. A network device, characterized in that, Comprising: A sending unit, configured to send second information to a terminal device, where the second information is used to indicate one or more of the following: Transmit or not transmit the first SSB; Transmit or not transmit the first SSB within a second time period; The period for transmitting the first SSB.

144. The network device according to claim 143, wherein: The second information is used to indicate transmitting the first SSB, including that the second information is used to indicate activating the transmission of the first SSB; The second information is used to indicate not transmitting the first SSB, including that the second information is used to indicate deactivating the transmission of the first SSB; The second information is used to indicate transmitting the first SSB within a second time period, including that the second information is used to indicate activating the transmission of the first SSB within the second time period; The second information is used to indicate not transmitting the first SSB within a second time period, including that the second information is used to indicate deactivating the transmission of the first SSB within the second time period.

145. The network device according to claim 143 or 144, characterized in that, The second information carries the index of the first SSB.

146. The network device according to any one of claims 143 to 145, characterized in that, The second time period belongs to one of a plurality of second time periods, and the plurality of second time periods are periodically distributed in the time domain.

147. The network device according to any one of claims 143-146, characterized in that, The second time period corresponds to a third time window, and the second information carries the index of the third time window.

148. The network device according to claim 147, characterized in that, The third time window is an SMTC window.

149. The network device according to any one of claims 143-148, characterized in that, The first SSB is periodically transmitted within the second time period.

150. The network device according to any one of claims 143-149, characterized in that, The second information is used to indicate the period for transmitting the first SSB, including that the second information is used to indicate the period for transmitting the first SSB from a plurality of periods.

151. The network device according to claim 150, characterized in that, The plurality of periods include a default period, and the default period is used to indicate the period for transmitting the first SSB when the terminal device does not receive the second information.

152. The network device according to claim 150 or 151, characterized in that, The plurality of periods are configured by the network device for the terminal device.

153. A terminal device, characterized in that, Comprising a transceiver, a memory, and a processor, 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 terminal device according to any one of claims 1-28, 57-66.

154. A network device, characterized in that, Comprising a transceiver, a memory, and a processor, 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 terminal device according to any one of claims 29-56, 67-76.

155. A device, characterized in that, Comprising a processor, used to call a program from a memory, so that the device executes the method according to any one of claims 1-76.

156. A chip, characterized in that, Comprising a processor, used to call a program from a memory, so that the device installed with the chip executes the terminal device according to any one of claims 1-76.

157. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program causes a computer to execute the terminal device according to any one of claims 1-76.

158. A computer program product, characterized in that, Comprising a program, and the program causes a computer to execute the terminal device according to any one of claims 1-76.

159. A computer program, characterized in that, The computer program causes a computer to execute the terminal device according to any one of claims 1-76.

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