Wireless communication method, terminal device, and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The wireless communication method comprises: a terminal device sends a first signal to a network device corresponding to a first cell, the first signal being used for triggering the network device to send a synchronization signal and / or system information of the first cell, wherein the first signal is sent in an asynchronous manner; or, the first signal is sent on the basis of timing information of the first cell, and the timing information is acquired by the terminal device from the first cell.

Description

Method, terminal device and network device for wireless communication TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method, a terminal device and a network device for wireless communication. BACKGROUND

[0002] In order to realize network energy saving (NES), the related technology proposes that a cell (such as an NES cell) can reduce the transmission of public signals such as synchronization signals and system information. In this case, a terminal device can transmit a first signal (such as a wake-up signal) to the cell to trigger the cell to transmit the public signals such as synchronization signals and system information. At present, when the terminal device transmits the first signal to the cell, it must rely on other cells.

[0003] SUMMARY

[0004] The present application provides a method, a terminal device and a network device for wireless communication. The various aspects involved in the present application are introduced below.

[0005] In a first aspect, a method for wireless communication is provided, comprising: a terminal device transmitting a first signal to a network device corresponding to a first cell, the first signal being used to trigger the network device to transmit synchronization signals and / or system information of the first cell; wherein the first signal is transmitted based on an unsynchronized manner; or the first signal is transmitted based on timing information of the first cell, and the timing information is acquired by the terminal device from the first cell.

[0006] In a second aspect, a method for wireless communication is provided, comprising: a network device corresponding to a first cell receiving a first signal transmitted by a terminal device, the first signal being used to trigger the network device to transmit synchronization signals and / or system information of the first cell; wherein the first signal is received based on an unsynchronized manner; or the first signal is transmitted based on timing information of the first cell, and the timing information is acquired by the terminal device from the first cell.

[0007] In a third aspect, a terminal device is provided, comprising: a transmitting module configured to transmit a first signal to a network device corresponding to a first cell, the first signal being used to trigger the network device to transmit synchronization signals and / or system information of the first cell; wherein the first signal is transmitted based on an unsynchronized manner; or the first signal is transmitted based on timing information of the first cell, and the timing information is acquired by the terminal device from the first cell.

[0008] In a fourth aspect, a network device is provided. The network device is a network device corresponding to a first cell. The network device comprises a receiving module configured to receive a first signal transmitted by a terminal device, the first signal being used to trigger the network device to transmit a synchronization signal and / or system information of the first cell. The first signal is received based on an asynchronous manner. Alternatively, the first signal is transmitted based on timing information of the first cell, and the timing information is acquired by the terminal device from the first cell.

[0009] In a fifth aspect, a terminal device is provided. The terminal device comprises a processor, a memory and a communication interface. The memory is configured to store one or more computer programs. The processor is configured to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided. The network device comprises a processor, a memory and a communication interface. The memory is configured to store one or more computer programs. The processor is configured to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, a communication system is provided. The system comprises the terminal device and / or the network device described above. In another possible design, the system can further comprise other devices interacting with the terminal device or the network device in the solutions provided by the embodiments of the present application.

[0012] In an eighth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. The computer program causes a computer to perform some or all of the steps in the methods of the aspects described above.

[0013] In a ninth aspect, a computer program product is provided. The computer program product includes a non-transitory computer-readable storage medium storing a computer program. The computer program is executable by an apparatus to perform some or all of the steps in the methods of the aspects described above. In some implementations, the computer program product can be a software installation package.

[0014] In a tenth aspect, a chip is provided. The chip comprises a memory and a processor. The processor can invoke and run a computer program from the memory to implement some or all of the steps described in the methods of the aspects described above.

[0015] In the embodiments of the present application, the first signal can be sent in a non-synchronous manner or based on timing information obtained by the terminal device from the first cell. In this way, the terminal device can independently send the first signal to the network device corresponding to the first cell. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is an example of a system architecture of a wireless communication system to which embodiments of the present application can be applied.

[0017] FIG. 2 is a schematic diagram of a process of cell search.

[0018] FIG. 3 is a flowchart of a method of wireless communication provided by an embodiment of the present application.

[0019] FIG. 4 is an example of a possible implementation of detection of a first signal by a network device.

[0020] FIG. 5 is an example of a first signal provided by an embodiment of the present application.

[0021] FIG. 6 is another example of a first signal provided by an embodiment of the present application.

[0022] FIG. 7 is yet another example of a first signal provided by an embodiment of the present application.

[0023] FIG. 8 is yet another example of a first signal provided by an embodiment of the present application.

[0024] FIG. 9 is an example of a sending manner of a first signal provided by an embodiment of the present application.

[0025] FIG. 10 is an example of a sending manner of a first signal provided by another embodiment of the present application.

[0026] FIG. 11 is an example of a sending manner of a first signal provided by yet another embodiment of the present application.

[0027] FIG. 12 is an example of a sending manner of a first signal provided by yet another embodiment of the present application.

[0028] FIG. 13 is an example of a sending manner of a first signal provided by yet another embodiment of the present application.

[0029] FIG. 14 is an example of a sending manner of a first signal provided by yet another embodiment of the present application.

[0030] FIG. 15 is a schematic diagram of a structure of a terminal device provided by an embodiment of the present application.

[0031] FIG. 16 is a schematic diagram of a structure of a network device provided by an embodiment of the present application.

[0032] FIG. 17 is a schematic diagram of a structure of a communication apparatus provided by an embodiment of the present application. DETAILED DESCRIPTION

[0033] Communication system architecture

[0034] FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which embodiments of the present application can be applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device that communicates with the terminal device 120. The network device 110 can provide communication coverage for a specific geographic area and can communicate with the terminal device 120 located in the coverage area.

[0035] FIG. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system 100 can include multiple network devices and each network device can include other numbers of terminal devices within its coverage, which are not limited by embodiments of the present application.

[0036] Optionally, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, which are not limited by embodiments of the present application.

[0037] It should be understood that the technical solutions of embodiments of the present application can be applied to various communication systems, for example, a 5th generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), and the like. The technical solutions provided by the present application can also be applied to future communication systems, such as a 6th generation mobile communication system, a satellite communication system, and the like.

[0038] The terminal device in the embodiments of the present application can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device in the embodiments of the present application can refer to a device that provides voice and / or data connectivity for a user, and can be used to connect people, things and machines, for example, handheld devices with wireless connection functions, vehicle-mounted devices, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity, which provides a sidelink signal between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using a sidelink signal. The cellular phone and the smart home device communicate with each other without relaying the communication signal through the base station.

[0039] The network device in the embodiments of the present application can be a device for communicating with a terminal device, which can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, auxiliary 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. The 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. The base station can also refer to a communication module, modem or chip for being arranged in the foregoing device or apparatus. The base station can also be a mobile switching center and a device that undertakes the function of a base station in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, network side device in 6G network, device that undertakes the function of a base station in future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0040] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0041] In some deployments, the network device in the embodiments of the present application can refer to a CU or a DU, or the network device includes a CU and a DU. The gNB can also include an AAU.

[0042] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; and can also be deployed on aircraft, balloons and satellites in the air. The scenario in which the network device and the terminal device are located is not limited in the embodiments of the present application.

[0043] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform).

[0044] NES

[0045] With the development of communication technology, the wireless communication system has great improvement in key indicators such as transmission rate, transmission delay, connection scale, and can support more rich service scenarios and applications. Taking the 5G system as an example, as 5G is popularized in various industries and geographical areas, the 5G system is processing more advanced services and applications (such as extended reality) that require extremely high data rates, so the 5G network becomes denser and needs to use more antennas, wider frequency bands and more frequency bands. However, the continuous development of wireless communication systems also brings new problems to operators, such as energy consumption problems.

[0046] At present, energy consumption has become an important part of the operating expenses (OPEX) of operators. According to the report of the global system for mobile communications association (GSMA), the energy cost of mobile networks accounts for about 23% of the total cost of operators. Among them, most of the energy consumption comes from the radio access network, especially the AAU, while the data center and the optical fiber transmission only account for a small share.

[0047] The energy consumption of the mobile network can be divided into two categories, dynamic part energy consumption and static part energy consumption. Among them, the dynamic part energy consumption may refer to the consumption when data is sent / received, for example; the static part energy consumption may refer to the consumption generated to maintain the necessary operation of the wireless access device, even if there is no continuous data sending / receiving at this time.

[0048] It can be seen that the environmental impact of the wireless communication system needs to be controlled. Based on this, the related technology needs to develop new solutions to realize network energy saving, so as to realize the sustainable development of the environment, reduce environmental impact (such as reducing greenhouse gas emissions) and save operating costs through network energy saving.

[0049] The related research of network energy saving can include network energy saving technology and the related research of the impact of network energy saving technology on legacy terminal devices and specifications. Currently, network energy saving technology can achieve network energy saving from one or more aspects of time domain, frequency domain, space domain, and power domain, or in other words, network energy saving technology can be divided into different network energy saving technologies according to time domain, frequency domain, space domain, and power domain. The network energy saving technology related to time domain and frequency domain mainly aims to reduce the energy consumption of the dynamic part by trying to turn off more symbols on one or more carriers to achieve micro-sleep of network devices (such as base stations). In some implementations, in the case of energy consumption of the network device in the static part, the network energy saving technology related to time domain and frequency domain can reduce the energy consumption of the static part by expanding the interval of signals that need to be sent to achieve light / deep sleep of the network device. The network energy saving technology related to space domain and power domain mainly aims to reduce the power consumption of the transmitter-receiver (TRX) link and the power amplifier (PA) by trying one or more of the following schemes: turning off more spatial elements, reducing the transmission power, reducing the power spectral density, and improving the efficiency of the PA.

[0050] The 3rd generation partner project (3GPP) introduces some work items to study network energy saving techniques. For example, the network energy saving techniques in the 3GPP Release-18 (Rel-18) are mainly targeted at the scenario of specific signals and channels between the terminal device and the network device when the terminal device is in the radio resource control (RRC) connected state and the network is low load. Exemplarily, the network energy saving techniques involved in the Rel-18 mainly include the following aspects: operation of a secondary cell (SCell) without synchronization signal block (SSB), enhancement of cell discontinuous transmission (DTX) / discontinuous reception (DRX) mechanism, information exchange between nodes for cell DTX / DRX, network energy saving techniques related to spatial and power domains, mechanism to prevent legacy terminal devices from camping on network energy saving cells, enhancement of connection establishment optimization procedure, inter-node beam activation, and enhancement of paging limited in a limited area, and core requirements of radio resource management (RRM) / radio frequency (RF) corresponding to network energy saving.

[0051] The operation of the SCell without SSB is mainly targeted at the scenario of cross-band carrier aggregation (CA) and co-sited cells in frequency range 1 (FR1).

[0052] The enhancement of the cell DTX / DRX mechanism is mainly targeted at the enhancement of the alignment of the cell DTX / DRX and the DRX of the terminal device in the RRC connected mode.

[0053] The network energy saving techniques in the spatial and power domains are mainly used to achieve effective adaptation of spatial elements and effective adaptation of the power offset value between the physical downlink shared channel (PDSCH) and the channel state information-reference signal (CSI-RS).

[0054] Rel-18 involves network energy saving technologies aimed at improving the energy efficiency of 5G networks, especially in RRC connected state and low load conditions, by optimizing the use of signals and channels to improve cell energy management and reduce unnecessary energy consumption. Through these measures, operators can reduce operating costs while reducing the impact on the environment.

[0055] 3GPP Rel-19 enhances network energy saving technologies, mainly including the following aspects: on-demand activation of SSB for SCell, on-demand reception of system information block 1 (SIB1), and adaptive specification of common signal / channel transmission.

[0056] The on-demand activation of SSB for SCell is mainly aimed at terminal devices configured with CA and in RRC connected state. The method of on-demand activation of SSB for SCell includes one or more of the following: sending a wake-up signal through existing uplink signals / channels of the terminal device, through backhaul cell on / off indication information, and through SCell activation / deactivation signaling. The on-demand activated SSB can be used for one or more of the following: time / frequency synchronization of SCell, layer 1 / layer 3 measurement, and SCell activation.

[0057] The on-demand reception of SIB1 is mainly aimed at terminal devices in RRC idle state or RRC inactive state. The method of on-demand reception of SIB1 includes one or more of the following: sending a wake-up signal using existing signals / channels, and providing a wake-up signal configuration to the terminal device through information exchange between network devices.

[0058] The adaptive specification of common signal / channel transmission can include one or more of the following: adaptation of SSB in time domain (such as adaptive period), adaptation of physical random access channel (PRACH) in time domain, adaptation of PRACH in space domain (such as non-uniform PRACH resources per SSB, and specifying the PRACH resources when it is found to be beneficial), and enhancement of paging occasions by limiting paging occasions in time domain.

[0059] Cell search

[0060] The process of cell search refers to the key step of terminal devices searching for and accessing suitable serving cells in the network when turning on or needing to re-establish a connection. The following takes the NR system as an example to introduce the process of cell search in conjunction with FIG. 2.

[0061] FIG. 2 is a schematic diagram of a procedure of cell search. The procedure shown in FIG. 2 can include steps S210 to S270.

[0062] At step S210, the terminal device performs frequency tuning. The terminal device can adjust to a specific frequency according to a synchronization raster of a specified frequency band, to attempt to detect an SSB on the frequency raster.

[0063] At step S220, the terminal device detects a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The PSS and the SSS have fixed positions in the time-frequency resources of an SSB. By detecting the PSS and the SSS, the terminal device can obtain symbol synchronization and frame synchronization with the network device, and obtain a physical cell identity (PCI) of the network device.

[0064] At step S230, the terminal device decodes a physical broadcast channel (PBCH). After the terminal device is successfully synchronized with the network device, the terminal device can decode the PBCH using the information provided by the PSS and the SSS. The PBCH carries a master information block (MIB). The terminal device can obtain the MIB by decoding the PBCH. The MIB carries key parameters required for decoding other system information.

[0065] At step S240, the terminal device obtains the configuration of SIB1. The terminal device can determine the relevant configuration of a physical downlink control channel (PDCCH) that schedules SIB1 according to control resource set 0 (CORESET 0) and search space 0 (SearchSpace 0) in the MIB.

[0066] In step S250, the terminal device blindly detects downlink control information (DCI) and obtains DCI format 1_0. The terminal device can blindly detect DCI format 1_0 in the search space indicated by the MIB, where DCI format 1_0 is the DCI used to schedule SIB1. Once DCI format 1_0 is detected, the terminal device can use the system information-radio network temporary identifier (SI-RNTI) to further verify and obtain the specific content of DCI format 1_0.

[0067] In step S260, the terminal device detects and decodes SIB1 on the PDSCH. Using the information provided in DCI format 1_0, the terminal device can locate and decode the SIB1 carried on the PDSCH.

[0068] In step S270, the terminal device decodes other SIBs. SIB1 contains the key parameters required to decode other SIBs. The terminal device can decode other SIBs using the information provided in SIB1 to obtain complete network configuration and access information.

[0069] After successfully completing the cell search through the above steps, the terminal device can continue to access the cell and begin data transmission and communication.

[0070] As can be seen from the above description, in the NR system, for terminal devices in the RRC connected state, NES technology is mainly applied to SCells under CA configuration; for terminal devices in the RRC idle state or RRC inactive state, NES technology is mainly applied to cells undergoing cell reselection. In other words, NES cells cannot operate independently of normal cells. Terminal devices need to rely on normal cells to meet mobility requirements or obtain relevant configuration information of the NES cell, such as the configuration information of the wake-up signal. This wake-up signal is used to trigger the transmission of on-demand SSB or on-demand SIB1 on the NES cell. The NR system is designed this way to ensure backward compatibility and avoid affecting the mobility and cell search of traditional terminal devices.

[0071] However, there may be future needs for terminal devices to perform cell search and / or initial access via NES cells, and how to meet this need becomes a problem that needs to be solved. In other words, it is necessary to consider whether the NES cell is the primary cell (PCell) or whether the NES cell can be used for cell selection or initial access.

[0072] In summary, the current issue to consider is how NES cells can operate independently. Taking the example that a terminal device can send a first signal (such as a wake-up signal) to an NES cell to trigger the transmission of on-demand common signals (such as on-demand SSB, on-demand SIB, etc.) on the NES cell, how the terminal device can independently send the first signal to the NES cell is a problem that needs to be solved.

[0073] Taking the first signal used to trigger the NES cell to send an on-demand SSB as an example, when a terminal device enters an NES cell, if the NES cell does not send an SSB, the terminal device cannot identify the NES cell through the SSB. In this case, the terminal device can attempt to send the first signal to trigger the network device to send an on-demand SSB, thereby enabling subsequent cell identification, camping, and access. Currently, the terminal device needs to rely on other cells to send the first signal to the NES cell.

[0074] To address the aforementioned problems, embodiments of this application provide a wireless communication method, a terminal device, and a network device, which facilitates ensuring that the terminal device independently transmits a first signal to the network device corresponding to the first cell. The method embodiments of this application will be described below.

[0075] Figure 3 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 3 is described from the perspective of interaction between a terminal device and a network device, which can be, for example, the terminal device 120 and the network device 110 shown in Figure 1. The method shown in Figure 3 includes step S310, which will be described below.

[0076] In step S310, the terminal device sends a first signal to the network device corresponding to the first cell.

[0077] In this embodiment, the first cell may not transmit (or broadcast, or indicate) public signals. For example, the first cell may not transmit synchronization signals and / or system information. It should be noted that "not transmitting" mentioned in this embodiment can mean "not actively transmitting." For example, the first cell may not actively transmit public signals. Or, the first cell may not actively transmit synchronization signals and / or system information. Hereafter, "not transmitting" will refer to "not actively transmitting," and for brevity, this will not be elaborated further.

[0078] In some embodiments, the statement that the first cell does not transmit public signals (such as synchronization signals and / or system information) can be understood or replaced as: the public signals of the first cell are transmitted on demand. That is, the first cell can transmit public signals upon request from the terminal device.

[0079] This application does not limit the synchronization signal, as long as it is used for synchronization between the terminal device and the first cell. For example, the synchronization signal can be an SSB. Of course, the synchronization signal can also be other signals used for synchronization with the first cell, such as a PSS and / or an SSS, or a signal with the same or similar function as an SSB in a future communication system.

[0080] This application does not limit the system information. For example, the system information may include one or more of the following: MIB, SIB. As an example, the system information may include a MIB. As another example, the system information may include an SIB, such as SIB1 and / or other SIBs. As yet another example, the system information may include both a MIB and an SIB. However, this application is not limited to these examples; the system information may be information in future communication systems that has the same or similar functions as a MIB and / or an SIB.

[0081] In some embodiments, the first cell may be one or more of the following: a primary cell, a cell for cell selection, or a cell for cell access. As an example, the first cell may be a primary cell. As another example, for a terminal device in an RRC idle state or an RRC inactive state, the first cell may be used as a cell for cell selection (i.e., the first cell may be used for cell selection). As yet another example, for a terminal device requiring initial access, the first cell may be used as a cell for cell access (i.e., the first cell may be used for cell access or cell camping). However, the embodiments of this application are not limited to these; for example, the first cell may also be used for cell reselection or as a secondary cell, etc.

[0082] In some embodiments, the first cell is an NES cell. For example, the NES cell may be one or more of the following: a primary cell, a cell for cell selection, or a cell for cell access. Alternatively, the NES cell may also be used for cell reselection or as a secondary cell, etc.

[0083] In some embodiments, the first cell is a cell in NES state. In other words, in some embodiments, the first cell may include two states: normal state and NES state.

[0084] When the first cell is in a normal state, it (i.e., the network equipment corresponding to the first cell) can send public signals, such as synchronization signals, system information, and broadcast messages. In other words, when the first cell is in a normal state, it can actively send (e.g., broadcast) public signals. In this way, terminal devices can identify the first cell and obtain system information based on these public signals, thereby camping on or accessing the first cell. Taking a 5G system as an example, when the first cell is in a normal state, it can send a cell-defining synchronization signal block (cell-defining SSB). The PBCH in this SSB carries broadcast messages, which can be used to obtain resource information for scheduling the PDCCH of SIB1, thereby detecting the PDCCH based on this resource information to receive SIB1.

[0085] When the first cell is in NES state, the first cell (i.e., the network equipment corresponding to the first cell) can reduce the transmission of common signals, such as synchronization signals and system information. In this case, some common signals can be transmitted on demand, that is, transmitted according to the needs of terminal devices. When there is no demand from terminal devices, the first cell does not transmit these common signals to achieve network energy saving. As an example, system information (such as SIB1) can be transmitted on demand, and terminal devices can trigger the first cell to transmit system information using the first signal. As another example, synchronization signals (such as SSB) can be transmitted on demand, and terminal devices can trigger the first cell to transmit synchronization signals using the first signal. As yet another example, system information and synchronization signals can be transmitted on demand, and terminal devices can trigger the first cell to transmit both system information and synchronization signals using the first signal.

[0086] In other words, in this embodiment of the application, the first cell may be a cell in NES state, but it can still be used as an accessible cell. When needed, the first cell may have the functions of a non-NES cell (i.e., in normal state).

[0087] In some embodiments, the terminal device may send a first signal to the network device corresponding to the first cell (hereinafter referred to as the network device) to request the network device to send the public signal of the first cell. The first signal is described below.

[0088] In some embodiments, the first signal can be used to trigger (or wake up) the network device to send a common signal of the first cell, for example, to trigger the network device to send a synchronization signal and / or system information of the first cell. In some embodiments, the first signal being used to trigger the network device to send a common signal of the first cell can be understood as the first signal being used to trigger the network device to send an on-demand common signal of the first cell, for example, to trigger the network device to send an on-demand synchronization signal and / or on-demand system information of the first cell.

[0089] As an example, the first signal can be used to trigger network devices to send a synchronization signal for the first cell.

[0090] As another example, the first signal can be used to trigger network devices to send system information for the first cell.

[0091] As yet another example, the first signal can be used to trigger network devices to send synchronization signals and system information for the first cell.

[0092] In some embodiments, the first signal may be a wake-up signal (WUS), for example, the first signal may be an uplink wake-up signal.

[0093] In some embodiments, the first signal may be a random access channel (RACH). That is, the terminal device may send an RACH to the first cell to trigger the first cell to send on-demand synchronization signals and / or on-demand system information. However, the embodiments of this application are not limited to this, and the first signal may also be other types of channels or signals, such as specific channels or signals introduced in future communication systems (such as 6G systems).

[0094] In some embodiments, the first signal may be transmitted on a resource used for random access. For example, the first signal may be transmitted on a resource used for transmitting a preamble. Alternatively, the first signal may be transmitted on a PRACH resource.

[0095] In some embodiments, the first signal being sent on resources for random access can also be understood or replaced as the first signal being carried in a message for random access. For example, the first signal can be carried in uplink messages for random access, such as message 1, message 3, and message A.

[0096] In some embodiments, different terminal devices can select different resources (such as time domain, frequency domain, and code domain resources) from the RACH resource set to reduce mutual collisions and improve the success rate of network detection of the first signal.

[0097] In some embodiments, the resource carrying the first signal (such as a RACH resource) may be randomly selected by the terminal device.

[0098] In some embodiments, the resource carrying the first signal (such as RACH resource) may be determined by the terminal device according to certain preset rules. For example, the terminal device may select the resource carrying the first signal according to certain rules based on the terminal device's identifier (ID) to achieve randomization of the terminal device's selection of the resource carrying the first signal.

[0099] In some embodiments, the first signal can be transmitted and / or received at different time units based on different spatial information; that is, the transmission and / or reception of the first signal corresponds to certain spatial information. The terminal device transmitting and / or receiving the first signal based on different spatial information helps improve the success rate of the first signal being detected by the network device.

[0100] In some embodiments, spatial information may include beam information. That is, in some embodiments, the first signal may be transmitted and / or received at different time units based on different beam information. For example, the first signal may be transmitted using a beam scanning method.

[0101] Taking the example of a terminal device transmitting a first signal multiple times, each time at multiple time units, the terminal device can use different uplink beams for transmission during these multiple transmissions. In some embodiments, the terminal device can use one uplink beam for each transmission at the multiple time units, or it can use different uplink beams for those multiple time units. By changing the uplink beam, beam scanning can be achieved, thereby improving the success rate of the first signal being detected by the network device.

[0102] If the terminal device sends the first signal at different time units based on different beam information, the network device can use different receiving beams for detection at different detection times to achieve beam scanning in the receiving process.

[0103] In this embodiment, the first signal is independently sent by the terminal device to the network device of the first cell. That is, the terminal device can send the first signal to the network device of the first cell without relying on other cells. The implementation method of the terminal device independently sending the first signal to the network device of the first cell is described below.

[0104] In some embodiments, the first signal is transmitted based on timing information of the first cell. In some embodiments, the timing information of the first cell may be obtained by the terminal device from the first cell. For example, if the state of the first cell switches between a normal state and an NES state (e.g., switching between normal and NES states depending on service requirements), in this case, if the terminal device previously accessed the first cell when it was in a normal state, the terminal device may have obtained the timing information of the first cell. In this way, the terminal device can independently send the first signal to the network equipment of the first cell.

[0105] In some embodiments, in addition to obtaining the timing information of the first cell when the first cell is in a normal state, the terminal device can also obtain the configuration information of the first signal, such as the configuration information of the time domain, frequency domain, or code domain resources of the first signal. However, the embodiments of this application are not limited to this, and the configuration information of the first signal can also be obtained in other ways, such as the configuration information of the first signal being predefined. As an example, for a frequency band, specific frequency domain resources within that frequency band can be used as predefined resources for the transmission of the first signal.

[0106] In some embodiments, the first signal can be transmitted asynchronously. This allows the terminal device to independently transmit the first signal to the network equipment of the first cell.

[0107] The so-called first signal being sent asynchronously can be understood as the first signal being sent by the terminal device without knowing the timing information of the first cell. For example, the first signal is sent by the terminal device based on its own determined timing information (or assumed timing information) without knowing the timing information of the first cell.

[0108] In this scenario, since the terminal device cannot synchronize with the network device via SSB, the timing information of the first signal transmitted by the terminal device is unknown to the network device. The network device needs to assume various possible timing information to continuously detect the first signal. For example, if the first signal is a sequence, the network device's receiver needs to perform correlation operations on the sequence of the target first signal by sliding a time window to detect it. Alternatively, if the first signal is a channel carrying information, this channel requires a preamble for the receiver (network device) to complete identification and synchronization before it can be received normally. The network device still needs to use a similar time window sliding correlation method to detect the preamble of this channel. In other words, when the NES cell does not transmit an SSB, there is no time synchronization between the terminal device and the NES cell. The terminal device transmits the first signal asynchronously, which is very detrimental to the energy efficiency of the network device's first signal detection process.

[0109] Based on this, the embodiments of this application provide a method for transmitting a first signal and / or a method for detecting a first signal, which helps to ensure that the network device can detect the first signal discontinuously, thereby reducing the complexity and power consumption of the network device in detecting the first signal, and also helps to simplify the design complexity of the first signal.

[0110] In some instances, based on the method by which the network detects the first signal, the terminal device can determine the transmission method of the first signal based on the method by which the network device detects the first signal. That is, the transmission method of the first signal is related to the method by which the network device detects the first signal; in other words, the transmission method of the first signal can be determined based on the method by which the network device detects the first signal. In this way, the embodiments of this application help ensure that the network device can detect the first signal discontinuously, thereby reducing the complexity and power consumption of the network device's first signal detection. Furthermore, determining the transmission method of the first signal based on the method by which the network device detects the first signal also helps to simplify the design complexity of the first signal.

[0111] In some embodiments, the transmission method of the first signal is related to the way the network device detects the first signal and may include: the transmission method of the first signal is determined based on the way the network device detects the first signal.

[0112] In some embodiments, the transmission method of the first signal is related to the method by which the network device detects the first signal, and / or the transmission method of the first signal is determined based on the method by which the network device detects the first signal, which may include: the transmission method of the first signal is determined based on a first parameter of the network device detecting the first signal. However, the embodiments of this application are not limited to this. For example, the transmission method of the first signal is related to the method by which the network device detects the first signal, and / or the transmission method of the first signal is determined based on the method by which the network device detects the first signal, which may include: the transmission method of the first signal corresponding to the network device detecting the first signal using a sliding time window may be different from the transmission method of the first signal corresponding to the network device detecting the first signal based on a time unit.

[0113] In some embodiments, the first parameter for detecting the first signal is indicated by the network device. For example, the first parameter for detecting the first signal can be obtained from the cell accessed by the terminal device, such as through system messages or higher-layer signaling (e.g., RRC signaling) from cells previously accessed by the terminal device.

[0114] In some embodiments, the first parameter for detecting the first signal is predefined, such as that predefined by the protocol.

[0115] In some embodiments, some of the parameters in the first parameters for detecting the first signal are indicated by the network device, while the other part of the parameters are predefined.

[0116] In some embodiments, a first cell may correspond to multiple sets of first parameters for detecting a first signal. For example, a network device may instruct multiple sets of first parameters for detecting a first signal and / or a protocol may predefine multiple sets of first parameters for detecting a first signal.

[0117] In some embodiments, if the first cell corresponds to multiple sets of first parameters for detecting the first signal, the terminal device can determine multiple transmission methods of the first signal through the multiple sets of parameters to attempt to transmit the first signal.

[0118] The embodiments of this application do not limit the configuration granularity of the first parameter. Exemplarily, the first parameter can be configured based on one or more of the following granularities: carrier, band, band combination, frequency range (FR).

[0119] As an example, the first parameter can be based on the FR configuration. For instance, the first parameter for FR1 is different from the first parameter for FR2.

[0120] As another example, the first parameter can be configured based on the carrier. One or more carriers can correspond to a set of first parameters, meaning different carriers can correspond to different first parameters.

[0121] As another example, the first parameter can be configured based on a frequency band or a combination of frequency bands. One or more frequency bands (or one or more combinations of frequency bands) can correspond to a set of first parameters, meaning that different frequency bands or combinations of frequency bands can correspond to different first parameters.

[0122] As another example, the first parameter can be configured based on FR and frequency band. For instance, different first parameters can be configured for FR1 and FR2, and within FR1, different first parameters can be configured based on frequency band granularity, and within FR2, different first parameters can be configured based on frequency band granularity, and so on.

[0123] The embodiments of this application do not limit the first parameter for detecting the first signal. Exemplarily, the first parameter for detecting the first signal may be related to one or more of the following: the detection period of the first signal, the detection timing of the first signal, and the length of a time unit.

[0124] In some embodiments, the first parameter for detecting the first signal may include one or more of the following: the detection period of the first signal, the length of the detection timing of the first signal, the spatial information (such as beam information) corresponding to the detection timing of the first signal, and the length of a time unit corresponding to the first signal.

[0125] In some embodiments, the length of the detection timing of the first signal can refer to the length of the time unit encompassed by the detection timing of the first signal. Therefore, in some embodiments, the length of the detection timing of the first signal can also be referred to as the time length of the detection timing of the first signal.

[0126] In some embodiments, the network device may assume that the first signal is located within a time unit in the time domain. In this case, the length of the time unit corresponding to the first signal may refer to the length of the time unit in which the network device assumes the first signal is located. In some embodiments, the length of a time unit may be predefined (e.g., protocol predefined). In this case, the length of the time unit corresponding to the first signal may refer to the length of a predefined time unit.

[0127] This application does not limit the length of a time unit. For example, the length of a time unit may include one or more radio frames. Alternatively, the length of a time unit may include one or more subframes. Or, the length of a time unit may include one or more half-frames. Or, the length of a time unit may include one or more time slots. Or, the length of a time unit may include one or more symbols. Or, the length of a time unit may include one or more milliseconds. Or, the length of a time unit may include one or more microseconds, etc.

[0128] In some embodiments, the network device can periodically detect the first signal, detecting the first signal within a detection window of a certain duration in each detection cycle, thereby achieving energy saving in the process of the network device detecting the first signal. Figure 4 illustrates one possible implementation of the network device detecting the first signal. As shown in Figure 4, the network device can detect the first signal at a period P, detecting the first signal within a detection window of a certain duration L in each detection cycle.

[0129] In some embodiments, in order to ensure that the network device can successfully detect the first signal, the first signal sent by the terminal device needs to meet certain conditions. For example, the first signal sent by the terminal device needs to meet certain conditions so that the first signal sent by the terminal device can be successfully detected by the network device even when there is no time synchronization between the terminal device and the network device.

[0130] In some embodiments, the duration of the first signal overlaps with the detection timing of the first signal, so that the first signal sent by the terminal device can be successfully detected by the network device even when there is no time synchronization between the terminal device and the network device.

[0131] In some embodiments, the duration of the first signal may be related to the way the network device detects the first signal to ensure that the duration of the first signal overlaps with the detection timing of the first signal. For example, the duration of the first signal may be greater than or equal to the detection period of the first signal, so that the duration of the first signal will always overlap with at least one detection timing of the network device detecting the first signal.

[0132] However, the embodiments of this application are not limited to this. For example, the duration of the first signal may also be less than the detection period of the first signal, as long as the duration of the first signal and the detection period of the first signal can overlap. For example, the duration of the first signal may be less than the detection period of the first signal, and the first signal is sent periodically. In this way, after one or more cycles of transmission, the duration of the first signal can overlap with the detection period of the first signal.

[0133] In some embodiments, the transmission period of the first signal can be determined based on the detection period of the first signal. For example, the transmission period of the first signal can be determined based on the detection period of the first signal and a time offset. As an example, the transmission period of the first signal can be equal to the detection period of the first signal plus or minus the time offset, that is, the transmission period of the first signal can be equal to the sum (or difference) of the detection period of the first signal and the time offset. In this way, the relative position of the first signal transmitted by the terminal device each time in the current detection period will be shifted forward or backward by a certain time offset compared to the relative position of the first signal transmitted in the previous detection period. The change in the relative position of the first signal in the detection period is beneficial to ensure that the first signal is within the detection opportunity of the network device, thereby facilitating the successful detection of the first signal by the network device.

[0134] In some embodiments, the aforementioned time offset is determined based on the length of the detection timing of the first signal.

[0135] In some embodiments, the value of the aforementioned time offset may be less than or equal to the length of the detection window of the first signal. For example, the value of the aforementioned time offset may be less than or equal to the length of the detection window of the first signal minus the length of one time unit. As an example, the value of the aforementioned time offset may be equal to the length of the detection window of the first signal minus the length of one time unit, thereby facilitating the faster occurrence of the first signal within the detection window of the network device.

[0136] In some embodiments, the value of the aforementioned time offset can be equal to N times the length of a time unit, where N is a positive integer. However, the embodiments of this application are not limited to this; for example, the value of the aforementioned time offset can be greater than the length of a time unit. Alternatively, the value of the aforementioned time offset can be less than the length of a time unit (i.e., the timing offset mentioned below).

[0137] The following section describes the case where the time offset value is less than the length of a time unit.

[0138] In some embodiments, the first signal is sent by the terminal device by adjusting the timing information of the terminal device based on a timing offset. For example, the first signal may be sent at a first time interval, or the first signal may be sent at a certain period (or time interval), the determination of which is related to the timing offset.

[0139] In some embodiments, the first time interval is determined based on the detection period of the first signal and / or a timing offset. For example, the first time interval may be equal to the sum (or difference) of a fixed time interval and a timing offset. Alternatively, the first time interval may be determined based on the detection period of the first signal and the timing offset. For example, the first time interval may be equal to the detection period of the first signal plus or minus the timing offset, i.e., the first time interval may be equal to the sum (or difference) of the detection period of the first signal and the timing offset. In this way, when the terminal device sends the first signal according to the first time interval, the first signal will be offset forward or backward by a certain timing offset relative to the detection time of the network device, thereby facilitating the successful detection of the first signal by the network device.

[0140] In some embodiments, the timing offset can be less than the length of a time unit. For example, the timing offset can be equal to 1 / N of the length of a time unit, where N is a positive integer. In this case, after every N transmissions, the timing of the terminal device is shifted backward by a complete time unit.

[0141] It should be noted that the aforementioned time offset and timing offset are merely names used to indicate that they are offsets, and can be replaced with other names. This application embodiment does not limit this. In some embodiments, the aforementioned timing offset can also be understood as a time offset. For example, the aforementioned time offset and timing offset can be referred to as the first time offset and the second time offset, respectively, or the aforementioned time offset and timing offset can be referred to as the first offset and the second offset, etc.

[0142] In some embodiments, the first signal may be detected by sliding a time window. For example, in scenarios where the duration of the first signal is greater than or equal to the detection period of the first signal, the first signal may be detected by sliding a time window. Alternatively, in scenarios where the duration of the first signal is less than the detection period of the first signal, and the first signal is sent periodically, the first signal may be detected by sliding a time window.

[0143] In some embodiments, the first signal can be detected at the time unit level. For example, in scenarios where the duration of the first signal is less than the detection period of the first signal and the first signal is sent periodically, the first signal can be detected at the time unit level. Compared to detecting the first signal by sliding a time window, detecting the first signal at the time unit level helps to reduce the number of sampling points, thereby reducing the power consumption of the network device in detecting the first signal and achieving network energy saving.

[0144] In some embodiments, the first signal may be detected periodically at the time unit level to further reduce the power consumption of the network device in detecting the first signal and achieve network energy saving.

[0145] In some instances, based on the method by which the terminal device sends the first signal, the network device can determine the detection method for the first signal. That is, the detection method for the first signal is related to the method by which the terminal device sends the first signal; in other words, the detection method for the first signal can be determined based on the method by which the terminal device sends the first signal. In this way, the embodiments of this application help ensure that the network device can detect the first signal discontinuously, thereby reducing the complexity and power consumption of the network device in detecting the first signal.

[0146] In some embodiments, the detection method of the first signal is related to the way the terminal device sends the first signal and may include: the detection method of the first signal is determined based on the way the terminal device sends the first signal.

[0147] In some embodiments, the detection method of the first signal is related to the way the terminal device sends the first signal, and / or the detection method of the first signal is determined based on the way the terminal device sends the first signal, and may include: the detection method of the first signal is determined based on a second parameter of the terminal device sending the first signal.

[0148] In some embodiments, the second parameter is predefined or preconfigured, such as being predefined by the protocol. However, the embodiments of this application are not limited to this; for example, the second parameter may also be indicated by the network device.

[0149] In some embodiments, some parameters in the second parameter are indicated by the network device, while others are predefined.

[0150] In some embodiments, the terminal device may correspond to multiple sets of second parameters for transmitting the first signal. For example, the network device may instruct multiple sets of second parameters for transmitting the first signal and / or the protocol may predefine multiple sets of second parameters for transmitting the first signal.

[0151] In some embodiments, if the terminal device corresponds to multiple sets of second parameters for transmitting the first signal, the network device can determine multiple detection methods for the first signal through the multiple sets of parameters to attempt to detect the first signal.

[0152] The embodiments of this application do not limit the configuration granularity of the second parameter. Exemplarily, the second parameter can be configured based on one or more of the following granularities: carrier, frequency band, frequency band combination, FR.

[0153] As an example, the second parameter can be configured based on FR. For instance, the second parameter for FR1 is different from the second parameter for FR2.

[0154] As another example, the second parameter can be configured based on the carrier. One or more carriers can correspond to a set of second parameters, meaning different carriers can correspond to different second parameters.

[0155] As another example, the second parameter can be configured based on a frequency band or a combination of frequency bands. One or more frequency bands (or one or more combinations of frequency bands) can correspond to a set of second parameters, meaning that different frequency bands or combinations of frequency bands can correspond to different second parameters.

[0156] As another example, the second parameter can be configured based on FR and frequency band. For instance, different second parameters can be configured for FR1 and FR2, and within FR1, different second parameters can be configured based on frequency band granularity, and within FR2, different second parameters can be configured based on frequency band granularity, and so on.

[0157] This application does not limit the second parameter in its embodiments. Exemplarily, the second parameter may be related to one or more of the following: the transmission period of the first signal, the duration of the first signal, the timing information of the terminal device transmitting the first signal, the timing offset corresponding to the first signal, and the length of a time unit.

[0158] In some embodiments, the second parameter may include one or more of the following: the duration of the first signal, the transmission period of the first signal, the timing information of the terminal device transmitting the first signal, the timing offset corresponding to the first signal, the spatial information (such as beam information) corresponding to the duration of the first signal, and the length of a time unit corresponding to the first signal.

[0159] In some embodiments, based on the determined method of the terminal device sending the first signal, in order to ensure that the network device can successfully detect the first signal, the network device needs to meet certain conditions to detect the first signal. For example, the network device needs to meet certain conditions so that the first signal sent by the terminal device can be successfully detected by the network device even when there is no time synchronization between the terminal device and the network device.

[0160] In some embodiments, the detection timing of the first signal overlaps with the duration of the first signal, so that the first signal sent by the terminal device can be successfully detected by the network device even when there is no time synchronization between the terminal device and the network device.

[0161] In some embodiments, the detection period of the first signal may be related to the duration of the first signal to ensure that the detection timing of the first signal overlaps with the duration of the first signal. For example, the detection period of the first signal may be less than or equal to the duration of the first signal, so that the detection timing of the first signal will always overlap with at least one duration of the first signal transmitted by the terminal device.

[0162] However, the embodiments of this application are not limited to this. For example, the detection period of the first signal may also be greater than the duration of the first signal, as long as the detection period of the first signal and the duration of the first signal can overlap. For example, the detection period of the first signal may be greater than the duration of the first signal, and the first signal is sent periodically. In this way, after one or more cycles of transmission, the detection timing of the first signal may overlap with the duration of the first signal.

[0163] In some embodiments, the detection period of the first signal can be determined based on the transmission period of the first signal. For example, the detection period of the first signal can be determined based on the transmission period of the first signal and a time offset. As an example, the detection period of the first signal can be equal to the transmission period of the first signal plus or minus the time offset, that is, the detection period of the first signal can be equal to the sum (or difference) of the transmission period of the first signal and the time offset. In this way, the relative position of the first signal transmitted by the terminal device each time in the current detection period will be shifted forward or backward by a certain time offset compared to the relative position of the first signal transmitted in the previous detection period. The change in the relative position of the first signal in the detection period is beneficial to ensure that the first signal is within the detection opportunity of the network device, thereby facilitating the successful detection of the first signal by the network device.

[0164] In some embodiments, the aforementioned time offset is determined based on the duration of the first signal.

[0165] In some embodiments, the value of the time offset may be greater than or equal to the duration of the first signal. For example, the value of the time offset may be greater than or equal to the duration of the first signal plus the length of one or more time units. As an example, the value of the time offset may be equal to the duration of the first signal plus the length of one time unit. As another example, the value of the time offset may be equal to the duration of the first signal plus the length of two time units.

[0166] In some embodiments, the value of the time offset may be less than the length of the duration of the first signal. For example, the value of the time offset may be less than or equal to the length of the duration of the first signal minus the length of one or more time units.

[0167] In some embodiments, the value of the aforementioned time offset can be equal to N times the length of a time unit, where N is a positive integer. However, the embodiments of this application are not limited to this; for example, the value of the aforementioned time offset can be greater than the length of a time unit. Alternatively, the value of the aforementioned time offset can be less than the length of a time unit.

[0168] In some embodiments, the first signal may be detected by sliding a time window. For example, in scenarios where the detection period of the first signal is less than or equal to the duration of the first signal, the first signal may be detected by sliding a time window. Alternatively, in scenarios where the detection period of the first signal is greater than the duration of the first signal, and the first signal is sent periodically, the first signal may be detected by sliding a time window.

[0169] In some embodiments, the first signal can be detected at the time unit level. For example, in scenarios where the detection period of the first signal is longer than the duration of the first signal and the first signal is sent periodically, the first signal can be detected at the time unit level. Compared to detecting the first signal by sliding a time window, detecting the first signal at the time unit level helps to reduce the number of sampling points, thereby reducing the power consumption of the network device in detecting the first signal and achieving network energy saving.

[0170] In some embodiments, the first signal may be detected periodically at the time unit level to further reduce the power consumption of the network device in detecting the first signal and achieve network energy saving.

[0171] In some embodiments, the duration of the first signal may include one or more time units. For example, in a scenario where the duration of the first signal is greater than or equal to the detection period of the first signal (i.e., the detection period of the first signal is less than or equal to the duration of the first signal), the duration of the first signal may include multiple time units. Alternatively, in a scenario where the duration of the first signal is less than the detection period of the first signal (i.e., the detection period of the first signal is greater than the duration of the first signal), the duration of the first signal may include one time unit. Still another scenario where the duration of the first signal is less than the detection period of the first signal (i.e., the detection period of the first signal is greater than the duration of the first signal), the duration of the first signal may include multiple time units.

[0172] In some embodiments, if the duration of the first signal comprises one or more time units, the first signal may be transmitted on each of those one or more time units.

[0173] In some embodiments, when the first signal is transmitted at each of one or more time units, the first signal transmitted at each time unit may be the same. For example, the terminal device may repeatedly transmit the first signal at each time unit.

[0174] In some embodiments, when the first signal is transmitted at each of one or more time units, the first signal transmitted at each time unit may be different.

[0175] In some embodiments, when a first signal is transmitted at each of one or more time units, each time unit may include one or more first signals. In some embodiments, the plurality of first signals included in each time unit may be transmitted continuously. In some embodiments, the plurality of first signals included in each time unit may be transmitted at intervals.

[0176] In some embodiments, when the first signal is transmitted in each of the multiple time units, the number of first signals transmitted in different time units can be the same. Taking the transmission of the first signal in the first time unit and the second time unit as an example, the number of first signals transmitted in the first time unit and the number of first signals transmitted in the second time unit can both be two.

[0177] In some embodiments, when the first signal is transmitted in each of the multiple time units, the number of first signals transmitted in different time units may be different. Taking the transmission of the first signal in the first time unit and the second time unit as an example, the number of first signals transmitted in the first time unit may be 2, and the number of first signals transmitted in the second time unit may be 3.

[0178] In some embodiments, when the first signal is transmitted in one time unit, the first signal occupies the entire time unit in the time domain, or the first signal occupies a portion of the time in the time domain. Taking the transmission of the first signal in one or more time units as an example, the first signal transmitted in each of the one or more time units occupies the entire time unit in the time domain, or the first signal transmitted in each of the one or more time units occupies a portion of the time in the time domain.

[0179] In some embodiments, the length of the detection opportunity for the first signal is greater than or equal to twice the length of the first signal in the time domain. Taking the length of the first signal in the time domain as calculated in time units as an example, in some embodiments, when the first signal is transmitted in each of one or more time units, the length of the detection opportunity for the first signal is greater than or equal to twice the length of each of those one or more time units. In this way, when the duration of the first signal overlaps with the detection opportunity of the first signal, it can be guaranteed that at least one complete time unit is fully contained within the detection opportunity of the first signal, thereby enabling the network device to detect the first signal within a complete time unit.

[0180] For ease of understanding, the method for transmitting the first signal and / or the method for detecting the first signal provided in this application are described below with reference to Embodiments 1 to 5, wherein the method for transmitting the first signal and the method for detecting the first signal are corresponding. It should be noted that the embodiments below are merely examples and are not intended to limit the embodiments of this application.

[0181] It should also be noted that Examples 1 to 5 described below can all be applied to scenarios where network devices detect the first signal discontinuously.

[0182] It should also be noted that Embodiments 1 to 4 below can be applied to scenarios where the terminal device sends the first signal asynchronously, and Embodiment 5 can be applied to scenarios where the terminal device can obtain the timing information of the first cell from the first cell.

[0183] It should also be noted that Embodiments 1 to 3 described below can be applied to scenarios where network devices detect the first signal by sliding time windows, and Embodiment 4 can be applied to scenarios where network devices detect the first signal at the granularity of time units.

[0184] Example 1:

[0185] In Example 1, the network device can detect the first signal according to a period P, and the detection timing of the first signal each time has a certain time length L (see Figure 4 for the specific method of the network device detecting the first signal).

[0186] In Example 1, the duration of the first signal sent by the terminal device is related to the method by which the network device detects the first signal; in other words, the method by which the network device detects the first signal is related to the duration of the first signal sent by the terminal device. For example, the duration of the first signal can be greater than or equal to the detection period of the first signal. Therefore, the duration of the first signal will inevitably overlap with the detection timing of at least one first signal.

[0187] In some embodiments, the duration of the first signal may include multiple time units. For example, the duration of the first signal may include M time units, where M is an integer greater than 1.

[0188] In some embodiments, the first signal may be transmitted in each of the M time units.

[0189] In some embodiments, the first signal transmitted in each of the M time units may be the same or different. For example, the first signal transmitted in each of the M time units may be the same, that is, the terminal device may repeatedly transmit the first signal in each time unit.

[0190] In some embodiments, the number of first signals transmitted in each of the M time units can be one or more, or in other words, one or more first signals can be transmitted within each time unit. In some embodiments, the multiple first signals transmitted within each time unit can be transmitted continuously or at intervals. As shown in Figure 5, the duration of the first signal includes 8 time units (M=8), and 3 first signals are transmitted within each time unit.

[0191] In some embodiments, the length of one of the M time units can be less than or equal to half the length L of the detection timing of the first signal, or the length L of the detection timing of the first signal can be greater than or equal to the length of one of the M time units. For example, the length of one time unit can be equal to half the length L of the detection timing of the first signal. In this way, when the duration of the first signal overlaps with the detection timing of the first signal, it can be ensured that at least one complete time unit is completely included within the detection timing of the first signal, thereby enabling the network device to detect at least one first signal within a complete time unit.

[0192] In some embodiments, the first signal transmitted in each of the M time units occupies the entire time unit in the time domain. As shown in FIG6, the duration of the first signal comprises 8 time units (M=8), and one first signal is transmitted in each time unit, which occupies the entire time unit in the time domain.

[0193] In some embodiments, the first signal transmitted in each of the M time units occupies a portion of the time in the time domain. As shown in FIG7, the duration of the first signal comprises 8 time units (M=8), and one first signal is transmitted in each time unit, which occupies a portion of the time in the time domain.

[0194] In some embodiments, the number of first signals transmitted in different time units of the M time units may be the same or different. As shown in Figure 8, the duration of the first signal includes 8 time units (M=8), and the number of first signals transmitted in different time units is different. For example, the number of first signals transmitted in the first time unit is 1, the number of first signals transmitted in the second time unit is 2, and so on.

[0195] The following is a specific example of Embodiment 1 with reference to Figure 9. As shown in Figure 9, the network device detects the first signal according to a period P (P = 8 time units). Within each detection period, the length of the detection opportunity is L = 2 time units. When the network device detects the first signal according to the period P and the detection opportunity L, terminal devices 1 to 5 can respectively send the first signal according to their respective assumed timing information. The duration of the first signal sent by each terminal device can be equal to the detection period of the first signal, that is, the duration of the first signal M = 8 time units, and at least one first signal can be sent in each time unit. Alternatively, as shown in Figure 9, terminal devices 1 to 5 respectively send the first signal according to their respective assumed timing information. The duration of the first signal sent by each terminal device M = 8 time units, and at least one first signal can be sent in each time unit. When terminal devices 1 to 5 send the first signal according to the duration M = 8 time units, the network device can determine the detection period P of the first signal based on the duration M of the first signal (e.g., P = M = 8 time units), and detect the first signal within a detection opportunity with a time length L within each detection period.

[0196] As shown in Figure 9, the first signal sent by the terminal device in an asynchronous manner has at least one complete time unit falling within the detection time of the network device. For terminal devices 1 to 4, the time units falling within the detection time of the network device are time unit 1, time unit 2, time unit 3, and time unit 4, respectively. For terminal device 5, the time units falling within the detection time of the network device are time unit 5 and time unit 6.

[0197] In Example 1, the first signal sent by the terminal device can be successfully detected by the network device within a short period of time.

[0198] Example 2:

[0199] In Example 2, the network device can detect the first signal according to a period P, and the detection timing of the first signal each time has a certain time length L (see Figure 4 for the specific method of the network device detecting the first signal).

[0200] In Example 2, the duration of the first signal can be less than the detection period of the first signal, or the detection period of the first signal can be greater than the duration of the first signal.

[0201] In Example 2, the duration of the first signal sent by the terminal device may consist of only one time unit, and the first signal is sent periodically. That is, the terminal device can send the first signal at a certain period, and the duration of the first signal may consist of only one time unit.

[0202] In some embodiments, the terminal device may send a first signal for a time unit with assumed timing information and periodically send the first signal for the time unit.

[0203] In some embodiments, the length of a time unit may be less than or equal to half the length L of the detection timing of the first signal, or the length L of the detection timing of the first signal may be greater than or equal to twice the length of the time unit. For example, the length of a time unit may be equal to half the length L of the detection timing of the first signal. In this way, when the duration of the first signal overlaps with the detection timing of the first signal, it can be ensured that at least one complete time unit is completely included within the detection timing of the first signal, thereby enabling the network device to detect at least one first signal within a complete time unit.

[0204] In some embodiments, the first signal transmitted in a time unit occupies the entire time unit in the time domain.

[0205] In some embodiments, the first signal transmitted in a time unit occupies a portion of the time in the time domain.

[0206] In some embodiments, the transmission period of the first signal is determined based on the detection period of the first signal and a time offset, or the detection period of the first signal is determined based on the transmission period of the first signal and a time offset. For example, the transmission period of the first signal can be equal to P+K (i.e., the detection period P of the first signal can be equal to the transmission period of the first signal minus K), where P is the detection period of the first signal and K is the time offset. In this way, for the detection period of the first signal, the relative position of the time unit of the first signal transmitted by the terminal device in the current detection period will be shifted backward by a certain time offset K compared to the relative position of the time unit of the previously transmitted first signal in the previous detection period. Since the relative position of the first signal in the detection period is constantly changing, the first signal can fall within the detection window of the first signal and thus be detected by the network device.

[0207] In some embodiments, the time offset K can be equal to N times the length of a time unit, where N is a positive integer.

[0208] In some embodiments, the value of the time offset is related to the length of the detection timing of the first signal. Exemplarily, the value of the time offset can be less than or equal to the length of the detection timing of the first signal. For example, the value of the time offset K can be less than or equal to the length of the detection timing of the first signal minus the length of one time unit. As a specific example, the value of the time offset K can be equal to the length of the detection timing of the first signal minus the length of one time unit.

[0209] In some embodiments, the value of the time offset is related to the duration of the first signal. For example, the value of the time offset can be greater than or equal to the duration of the first signal. However, this embodiment is not limited to this; for instance, the value of the time offset can also be less than the duration of the first signal.

[0210] The following is a specific example of Embodiment 2 with reference to Figures 10 and 11.

[0211] As shown in Figure 10, the network device detects the first signal according to a period P (P = 8 time units). Within each detection period, the length of the detection opportunity L = 2 time units. When the network device detects the first signal according to the period P and the detection opportunity L, the terminal device sends the first signal in time unit 0 with assumed timing information. Afterwards, the terminal device sends subsequent first signals according to a period of P + K = 9 time units (where K = L - 1 = 1). Alternatively, as shown in Figure 10, the terminal device sends the first signal in time unit 0 with assumed timing information. Afterwards, the terminal device sends subsequent first signals according to a period of 9 time units. When the network device detects the first signal, it can detect the first signal according to a period of P (P equals the transmission period of the first signal minus the time offset K, where K = 1). The length of the detection opportunity L within each detection period can be determined based on the time offset K, for example, L = K + 1.

[0212] Because the relative position of the first signal in the current detection cycle is shifted by one time unit compared to its relative position in the previous detection cycle, the first signal can fall within the detection window and thus be detected by the network device. In the example of Figure 10, when the terminal device sends the first signal for the fourth time, the time unit 3 of the first signal falls within the detection window.

[0213] As shown in Figure 11, the network device detects the first signal according to a period P (P = 8 time units). Within each detection period, the length of the detection opportunity L = 3 time units. When the network device detects the first signal according to the period P and the detection opportunity L, the terminal device sends the first signal in time unit 0 with assumed timing information. Afterwards, the terminal device sends subsequent first signals according to a period of P + K = 10 time units (where K = L - 1 = 2). Alternatively, as shown in Figure 11, the terminal device sends the first signal in time unit 0 with assumed timing information. Afterwards, the terminal device sends subsequent first signals according to a period of 10 time units. When the network device detects the first signal, it can detect the first signal according to a period P (P equals the transmission period of the first signal minus the time offset K, where K = 2). The length of the detection opportunity L within each detection period can be determined based on the time offset K, for example, L = K + 1.

[0214] Because the relative position of the first signal in the current detection period is shifted backward by two time units compared to its relative position in the previous detection period, the first signal can fall within the detection window and thus be detected by the network device. In the example of Figure 11, when the terminal device sends the first signal for the third time, the time unit 2 of the first signal falls within the detection window.

[0215] Compared to Example 1, the method of Example 2 can reduce the duration of the first signal that needs to be sent for the network device to successfully detect the first signal.

[0216] Example 3:

[0217] In Example 3, the network device can detect the first signal according to a period P, and the detection timing of the first signal each time has a certain time length L (see Figure 4 for the specific method of the network device detecting the first signal).

[0218] In Example 3, the duration of the first signal can be less than the detection period of the first signal, or the detection period of the first signal can be greater than the duration of the first signal.

[0219] In Example 3, the duration of the first signal sent by the terminal device can include multiple time units (e.g., M time units, where M is an integer greater than 1), and the first signal is sent periodically. That is, the terminal device can send the first signal at a certain period, and the duration of the first signal can include multiple time units.

[0220] In some embodiments, the terminal device may send a first signal with assumed timing information and periodically send the first signal.

[0221] In some embodiments, the first signal may be transmitted in each of the M time units.

[0222] In some embodiments, the first signal transmitted in each of the M time units may be the same or different. For example, the first signal transmitted in each of the M time units may be the same, that is, the terminal device may repeatedly transmit the first signal in each time unit.

[0223] In some embodiments, the number of first signals transmitted in each of the M time units can be one or more, or in other words, one or more first signals can be transmitted within each time unit. In some embodiments, the multiple first signals transmitted within each time unit can be transmitted continuously or at intervals.

[0224] In some embodiments, the length of one of the M time units can be less than or equal to half the length L of the detection timing of the first signal, or the length L of the detection timing of the first signal can be greater than or equal to twice the length of the time unit. For example, the length of a time unit can be equal to half the length L of the detection timing of the first signal. In this way, when the duration of the first signal overlaps with the detection timing of the first signal, it can be ensured that at least one complete time unit is completely included within the detection timing of the first signal, thereby enabling the network device to detect at least one first signal within a complete time unit.

[0225] In some embodiments, the first signal transmitted in each of the M time units occupies the entire time unit in the time domain.

[0226] In some embodiments, the first signal transmitted in each of the M time units occupies a portion of the time in the time domain within that time unit.

[0227] In some embodiments, the number of first signals transmitted in different time units among the M time units may be the same or different.

[0228] In some embodiments, the transmission period of the first signal is determined based on the detection period of the first signal and a time offset, or the detection period of the first signal is determined based on the transmission period of the first signal and a time offset. For example, the transmission period of the first signal can be equal to P+K (i.e., the detection period P of the first signal can be equal to the transmission period of the first signal minus K), where P is the detection period of the first signal and K is the time offset. In this way, for the detection period of the first signal, the relative position of the time unit of the first signal transmitted by the terminal device in the current detection period will be shifted backward by a certain time offset K compared to the relative position of the time unit of the previously transmitted first signal in the previous detection period. Since the relative position of the first signal in the detection period is constantly changing, the first signal can fall within the detection window of the first signal and thus be detected by the network device.

[0229] In some embodiments, the time offset K can be equal to N times the length of a time unit, where N is a positive integer.

[0230] In some embodiments, the value of the time offset is related to the length of the detection timing of the first signal. Exemplarily, the value of the time offset can be less than or equal to the length of the detection timing of the first signal. For example, the value of the time offset K can be less than or equal to the length of the detection timing of the first signal minus the length of one time unit. As a specific example, the value of the time offset K can be equal to the length of the detection timing of the first signal minus the length of one time unit.

[0231] In some embodiments, the value of the time offset is related to the duration of the first signal. For example, the value of the time offset can be greater than or equal to the duration of the first signal. However, this embodiment is not limited to this; for instance, the value of the time offset can also be less than the duration of the first signal.

[0232] The following is a specific example of Embodiment 3 with reference to Figure 12. As shown in Figure 12, the network device detects the first signal according to a period P (P = 8 time units), and the length of the detection opportunity in each detection period is L = 2 time units. When the network device detects the first signal according to the period P and the detection opportunity L, the terminal device periodically sends the first signal according to the duration M = 2 time units of the first signal. In the example of Figure 12, the terminal device sends the first first signal at time units 0 and 1 with assumed timing information. Afterwards, the terminal device sends subsequent first signals according to a period of P + K = 9 time units (where K = L - 1 = 1).

[0233] Alternatively, as shown in Figure 12, the terminal device periodically sends the first signal for a duration M = 2 time units. Then, the terminal device sends subsequent first signals in a period of 9 time units. When the network device detects the first signal, it can detect it for P time units (P equals the transmission period of the first signal minus the time offset K, where K = 1). The length of the detection timing L within each detection period can be determined based on the time offset K, for example, L = K + 1.

[0234] Because the relative position of the first signal in the current detection period is shifted by one time unit compared to its relative position in the previous detection period, the first signal can fall within the detection window and thus be detected by the network device. In the example of Figure 12, when the terminal device sends the first signal for the third time, time unit 4 and time unit 5 of the first signal fall within the detection window.

[0235] Compared to Example 2, increasing the duration of the first signal helps ensure that the network can detect the first signal more quickly.

[0236] Examples 1 to 3 assume that the first signal can be detected if it falls within the detection window of the network device. Within the detection window of the first signal, the network device can detect the first signal by sliding the time window, without needing to align the time unit of the first signal with the time unit within the detection window.

[0237] To reduce the high power consumption caused by network devices detecting the first signal, the network device can detect the first signal at a time unit granularity. That is, assuming that the time unit of the first signal is aligned with the time unit detected by the network device, the network device can perform independent signal detection for different time units. The following, with reference to Example 4, describes the transmission method of the first signal in a scenario where the network device detects the first signal at a time unit granularity.

[0238] Example 4:

[0239] In embodiment 4, the terminal device can send a first signal within a time unit based on assumed timing information, and send the first signal periodically. For example, the terminal device can send the first signal according to a first time interval, sending the first signal each time within a time unit.

[0240] In some embodiments, the first time interval is determined based on the detection period of the first signal and a timing offset. For example, the first time interval can be equal to the sum of the detection period of the first signal and the timing offset. In this way, after the terminal device transmits the first signal several times, the timing information of the first signal after the timing offset can be aligned with the timing information of the network device, that is, the time unit of the first signal can be aligned with the time unit detected by the network device. It should be noted that strict alignment is not required here, but only within the timing deviation range allowed by the network device detection.

[0241] In some embodiments, the value of the timing offset is less than the length of a time unit. For example, the value of the timing offset can be equal to 1 / N of the length of a time unit, where N is a positive integer. That is, the time length of N timing offsets can cover (or be equal to) the length of a time unit. Therefore, after every N transmissions, the timing information for the first signal sent by the terminal device can be shifted backward by a complete time unit.

[0242] In some embodiments, the network device may detect the first signal at the granularity of time units, and detect each time unit.

[0243] In some embodiments, the network device can detect the first signal at the granularity of time units and periodically detect the first signal (or periodically detect time units), and the detection timing of the first signal in each detection cycle has a certain time length L.

[0244] The following is a specific example of Embodiment 4 with reference to Figures 13 and 14.

[0245] In the example of Figure 13, the network device detects the first signal at the time unit level, and detects each time unit. The terminal device sends the first first signal at time unit 0 with assumed timing information, sends the first first signal a second time after a first time interval (the first time interval = a fixed time interval + a timing offset, where the fixed time interval = 8 time units), and then sends the first first signal a third time after another first time interval, and so on. Through timing adjustments during the multiple transmissions of the first signal, when the terminal device sends the first signal for the third time, the first signal within the time unit using the corresponding timing information can be detected by the network device.

[0246] In the example of Figure 14, the network device detects the first signal at a time unit granularity and periodically (detection period P = 8). The length L = 1 of the detection opportunity within each detection period. The terminal device sends the first signal at time unit 0 with assumed timing information, sends the second signal at a first time interval (first time interval = detection period of the first signal + timing offset), and then sends the third signal at a first time interval, and so on. As the timing information of the time unit in which the terminal device sends the first signal changes, after several timing adjustments, the time unit of the first signal sent by the terminal device can be aligned with the time unit of a certain detection opportunity of the network device. In the example of Figure 14, when the terminal device sends the first signal for the third time, the time unit of the first signal is aligned with the time unit preceding the time unit of the detection opportunity. After N transmissions, the time unit of the first signal sent by the terminal device will be aligned with the time unit of the detection opportunity, thus enabling the first signal to be detected by the network device.

[0247] Examples 1 to 4 describe methods for transmitting a first signal when the terminal device cannot obtain the timing information of the first cell. For example, when the terminal device initially accesses the first cell, it can use the methods of Examples 1 to 4 to transmit the first signal. The following example, in conjunction with Example 5, describes an instance where the terminal device can transmit a first signal by obtaining the timing information of the first cell.

[0248] Example 5:

[0249] In Example 5, the state of the first cell can switch between a normal state and an NES state, for example, switching between the normal state and the NES state according to the service situation.

[0250] In Embodiment 5, the terminal device can obtain the timing information of the first cell from the first cell and send a first signal based on the timing information. For example, if the terminal device previously accessed the first cell when the first cell was in a normal state, and when the terminal device wants to reconnect with the first cell via RRC, the first cell is in NES state. In this case, the terminal device can send a first signal to the first cell based on the previously obtained timing information of the first cell.

[0251] Referring again to Figure 3, in some embodiments, the method shown in Figure 3 may further include step S320. In step S320, the terminal device detects the response information sent by the network device.

[0252] In some embodiments, the response information may be used to indicate the reception status of the first signal.

[0253] In some embodiments, after the terminal device detects or receives the response information, the terminal device may stop sending the first signal to the network device.

[0254] This application does not limit the content of the response information, as long as the response information can be used to indicate that the network device has received the first signal. For example, the response information may include one or more of the following: information related to the synchronization signal of the first cell, information related to the system information of the first cell, the discovery signal of the first cell, and the access control information of the first cell.

[0255] In some embodiments, the relevant information of the synchronization signal of the first cell may include one or more of the following: the synchronization signal of the first cell, and auxiliary information of the synchronization signal of the first cell.

[0256] In some embodiments, the relevant information of the system information of the first cell may include one or more of the following: the system information of the first cell, and auxiliary information of the system information of the first cell.

[0257] In some embodiments, the access control information of the first cell can be used to indicate whether a terminal device can access the first cell. For example, the access control information of the first cell can be used to indicate whether a terminal device with one or more capabilities (or types) can access the first cell.

[0258] In some embodiments, the access control information of the first cell may include cell-barred information of the first cell.

[0259] In some embodiments, the access control information of the first cell can be configured for different types of terminal devices. Taking the terminal device type including reduced capability UE (Redcap UE) as an example, the access control information of the first cell can respectively indicate the access control information of Redcap UEs with one receive link (1RX) and two receive links (2RX).

[0260] In some embodiments, the access control information of the first cell can be carried in the system information of the first cell, such as in the SIB1 of the first cell. For example, for a terminal device that supports discontinuous transmission / discontinuous reception of NES cells, the terminal device can determine the access control information of the NES cell through cellBarredNES in SIB1.

[0261] In this embodiment, since the transmission of SIB1 in the first cell can be on-demand based on a first signal trigger, the terminal device cannot know the access control information of the first cell before receiving the on-demand SIB1. If the terminal device only learns the access control information of the first cell after sending the first signal and triggering the first cell to send on-demand SIB1, the first cell may be an inaccessible cell for the terminal device, and the transmission of on-demand SIB1 would be an additional power overhead for both the first cell and the terminal device. Therefore, in this embodiment, after the terminal device sends the first signal, the access control information of the first cell can be indicated by the response information of the network device. This allows the terminal device to know the access control information of the first cell through the response information before further detecting SSB or triggering on-demand SIB1, which helps the terminal device determine whether to detect SSB or trigger on-demand SIB1, thereby facilitating network energy saving and terminal device energy saving.

[0262] As an example, the response information may include the synchronization signal of the first cell, such as the SSB.

[0263] As another example, the response information may include auxiliary information about the synchronization signal of the first cell, such as information on resources used to instruct the terminal device to detect the synchronization signal. Exemplarily, the response information may include information on the time-domain and frequency-domain location of the synchronization signal used to instruct the terminal device to detect it.

[0264] As another example, the response information may include the synchronization signal of the first cell and auxiliary information of the synchronization signal of the first cell.

[0265] As yet another example, the response information may include system information of the first cell, such as SIB1.

[0266] As another example, the response information may include auxiliary information about the system information of the first cell, such as information indicating the resources used by the terminal device to detect the system information. For instance, the response information may include information indicating the time-domain and frequency-domain location of the system information detected by the terminal device.

[0267] As another example, the response information may include the system information of the first cell and auxiliary information of the system information of the first cell.

[0268] As yet another example, the response information may include the discovery signal of the first cell.

[0269] As yet another example, the response information may include access control information for the first cell.

[0270] As yet another example, the response information may include the synchronization signal of the first cell and the system information of the first cell.

[0271] As another example, the response information may include the synchronization signal of the first cell and the access control information of the first cell.

[0272] As another example, the response information may include the system information of the first cell, the discovery signal of the first cell, and the access control information of the first cell.

[0273] The above example is just an illustration; the response information may contain other combinations, which will not be listed here for the sake of brevity.

[0274] The method embodiments of this application have been described in detail above with reference to Figures 1 to 14. The apparatus embodiments of this application will be described in detail below with reference to Figures 15 to 17. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0275] Figure 15 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. The terminal device 1500 shown in Figure 15 includes a transmitting module 1510. The transmitting module 1510 can be used to transmit a first signal to a network device corresponding to a first cell, the first signal being used to trigger the network device to transmit a synchronization signal and / or system information of the first cell; wherein, the first signal is transmitted in an asynchronous manner; or, the first signal is transmitted based on timing information of the first cell, and the timing information is obtained by the terminal device from the first cell.

[0276] In some embodiments, the way the first signal is transmitted relates to the way the network device detects the first signal.

[0277] In some embodiments, the transmission method of the first signal is related to the method by which the network device detects the first signal, including: the transmission method of the first signal is determined based on a first parameter of the network device for detecting the first signal.

[0278] In some embodiments, the first parameter includes one or more of the following: the detection period of the first signal; the length of the detection opportunity of the first signal; the spatial information corresponding to the detection opportunity of the first signal; and the length of a time unit corresponding to the first signal.

[0279] In some embodiments, the duration of the first signal overlaps with the timing of its detection.

[0280] In some embodiments, the duration of the first signal is greater than or equal to the detection period of the first signal.

[0281] In some embodiments, the duration of the first signal is less than the detection period of the first signal, and the first signal is transmitted periodically.

[0282] In some embodiments, the transmission period of the first signal is determined based on the detection period of the first signal.

[0283] In some embodiments, the transmission period of the first signal is determined based on the detection period of the first signal and the time offset.

[0284] In some embodiments, the time offset is determined based on the length of the detection timing of the first signal.

[0285] In some embodiments, the value of the time offset is less than or equal to the length of the detection time of the first signal.

[0286] In some embodiments, the time offset is equal to N times the length of a time unit, where N is a positive integer.

[0287] In some embodiments, the length of the first signal in the time domain is less than or equal to half the length of the detection timing of the first signal.

[0288] In some embodiments, the duration of the first signal includes one or more time units, and the first signal is transmitted at each of the one or more time units.

[0289] In some embodiments, the length of each of the one or more time units is less than or equal to half the length of the detection timing of the first signal.

[0290] In some embodiments, the first signal transmitted in each of the one or more time units occupies the entire time unit in the time domain, or the first signal transmitted in each of the one or more time units occupies a portion of the time in the time domain.

[0291] In some embodiments, the number of first signals transmitted on different time units in one or more time units may be the same or different.

[0292] In some embodiments, the first signal is sent by the terminal device based on a timing offset to adjust the timing information of the terminal device.

[0293] In some embodiments, the first signal is sent at a first time interval, the first time interval being determined based on the detection period of the first signal and / or the timing offset, wherein the value of the timing offset is less than the length of a time unit.

[0294] In some embodiments, the first time interval is equal to the sum of the detection period of the first signal and the timing offset.

[0295] In some embodiments, the first signal is detected at a time unit granularity.

[0296] In some embodiments, the first signal is detected periodically at a time unit granularity.

[0297] In some embodiments, the first signal is sent based on a second parameter, the second parameter including one or more of the following: the duration of the first signal; the transmission period of the first signal; timing information of the terminal device sending the first signal; timing offset corresponding to the first signal; spatial information corresponding to the duration of the first signal; and the length of a time unit corresponding to the first signal.

[0298] In some embodiments, the second parameter is predefined or preconfigured.

[0299] In some embodiments, the second parameter is configured based on one or more of the following granularities: carrier, frequency band, frequency band combination, frequency range.

[0300] In some embodiments, the terminal device further includes a detection module 1520, configured to detect response information sent by the network device, the response information being used to indicate the reception status of the first signal.

[0301] In some embodiments, the response information includes one or more of the following: information related to the synchronization signal of the first cell; information related to the system information of the first cell; the discovery signal of the first cell; and access control information of the first cell, wherein the access control information is used to indicate whether the terminal device can access the first cell.

[0302] In some embodiments, the first parameter for detecting the first signal is indicated by the network device or is predefined.

[0303] In some embodiments, the first signal is transmitted at different time units based on different spatial information, and / or the first signal is received at different time units based on different spatial information.

[0304] In some embodiments, the first signal is transmitted on a resource for random access.

[0305] In some embodiments, the first cell is one or more of the following: a primary cell, a cell for cell selection, and a cell for cell access.

[0306] In some embodiments, the first cell is a network-energy-saving cell, or the first cell is a cell in a network-energy-saving state.

[0307] In some embodiments, the transmitting module 1510 may be a transceiver 1730. The terminal device 1500 may also include a processor 1710 and a memory 1720, as shown in FIG17.

[0308] Figure 16 is a schematic diagram of the structure of a network device provided in an embodiment of this application. The network device 1600 shown in Figure 16 includes a receiving module 1610. The receiving module 1610 can be used to receive a first signal sent by a terminal device, the first signal being used to trigger the network device to send a synchronization signal and / or system information of the first cell; wherein, the first signal is received in an asynchronous manner; or, the first signal is sent based on timing information of the first cell, and the timing information is obtained by the terminal device from the first cell.

[0309] In some embodiments, the detection method of the first signal is related to the method by which the terminal device sends the first signal.

[0310] In some embodiments, the detection method of the first signal is related to the way the terminal device sends the first signal, including: the detection method of the first signal is determined based on a second parameter of the terminal device sending the first signal.

[0311] In some embodiments, the second parameter includes one or more of the following: the duration of the first signal; the transmission period of the first signal; spatial information corresponding to the duration of the first signal; and the length of a time unit corresponding to the first signal.

[0312] In some embodiments, the timing of the detection of the first signal overlaps with the duration of the first signal.

[0313] In some embodiments, the detection period of the first signal is less than or equal to the duration of the first signal.

[0314] In some embodiments, the detection period of the first signal is longer than the duration of the first signal, and the first signal is transmitted periodically.

[0315] In some embodiments, the detection period of the first signal is determined based on the transmission period of the first signal.

[0316] In some embodiments, the detection period of the first signal is determined based on the transmission period of the first signal and the time offset.

[0317] In some embodiments, the time offset is determined based on the duration of the first signal.

[0318] In some embodiments, the time offset is equal to N times the length of a time unit, where N is a positive integer.

[0319] In some embodiments, the length of the detection timing of the first signal is greater than or equal to twice the length of the first signal in the time domain.

[0320] In some embodiments, the duration of the first signal includes one or more time units, and the first signal is transmitted at each of the one or more time units.

[0321] In some embodiments, the length of the detection timing of the first signal is greater than or equal to twice the length of each of the one or more time units.

[0322] In some embodiments, the first signal transmitted in each of the one or more time units occupies the entire time unit in the time domain, or the first signal transmitted in each of the one or more time units occupies a portion of the time in the time domain.

[0323] In some embodiments, the number of first signals transmitted on different time units in one or more time units may be the same or different.

[0324] In some embodiments, the first signal is detected based on a first parameter, the first parameter including one or more of the following: the detection period of the first signal; the length of the detection timing of the first signal; the spatial information corresponding to the detection timing of the first signal; and the length of a time unit corresponding to the first signal.

[0325] In some embodiments, the first parameter is predefined or preconfigured.

[0326] In some embodiments, the first parameter is configured based on one or more of the following granularities: carrier, frequency band, frequency band combination, frequency range.

[0327] In some embodiments, the network device further includes a sending module 1620, configured to send response information to the terminal device, the response information being used to indicate the reception status of the first signal.

[0328] In some embodiments, the response information includes one or more of the following: information related to the synchronization signal of the first cell; information related to the system information of the first cell; the discovery signal of the first cell; and access control information of the first cell, wherein the access control information is used to indicate whether the terminal device can access the first cell.

[0329] In some embodiments, the first parameter for detecting the first signal is indicated by the network device or is predefined.

[0330] In some embodiments, the first signal is transmitted at different time units based on different spatial information, and / or the first signal is received at different time units based on different spatial information.

[0331] In some embodiments, the first signal is transmitted on a resource for random access.

[0332] In some embodiments, the first cell is one or more of the following: a primary cell, a cell for cell selection, and a cell for cell access.

[0333] In some embodiments, the first cell is a network-energy-saving cell, or the first cell is a cell in a network-energy-saving state.

[0334] In some embodiments, the receiving module 1610 may be a transceiver 1730. The network device 1600 may also include a processor 1710 and a memory 1720, as shown in FIG17.

[0335] Figure 17 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 17 indicate that the unit or module is optional. This device 1700 can be used to implement the methods described in the above method embodiments. Device 1700 can be a chip, a terminal device, or a network device.

[0336] Apparatus 1700 may include one or more processors 1710. The processor 1710 may support apparatus 1700 in implementing the methods described in the preceding method embodiments. 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 other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0337] The apparatus 1700 may further include one or more memories 1720. The memories 1720 store a program that can be executed by the processor 1710, causing the processor 1710 to perform the methods described in the preceding method embodiments. The memories 1720 may be independent of the processor 1710 or integrated within the processor 1710.

[0338] The device 1700 may also include a transceiver 1730. The processor 1710 can communicate with other devices or chips via the transceiver 1730. For example, the processor 1710 can send and receive data with other devices or chips via the transceiver 1730.

[0339] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0340] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0341] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in various embodiments of this application.

[0342] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0343] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0344] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0345] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0346] In the embodiments of this application, the term "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" in the embodiments of this application can be replaced with "instructing" or "used to determine". For example, "A includes B" can be replaced with "A instructs B" or "A is used to determine B".

[0347] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0348] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0349] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0350] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0351] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0352] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0353] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0354] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0355] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of wireless communication, comprising: Comprise: The terminal device sends a first signal to the network device corresponding to the first cell, the first signal being used to trigger the network device to send synchronization signals and / or system information of the first cell; Wherein, the first signal is sent in a non-synchronous manner; or, the first signal is sent based on timing information of the first cell, and the timing information is obtained by the terminal device from the first cell.

2. The method of claim 1, wherein, The sending mode of the first signal is related to the way the network device detects the first signal.

3. The method of claim 2, wherein, The sending mode of the first signal is related to the way the network device detects the first signal, including that the sending mode of the first signal is determined based on a first parameter for the network device to detect the first signal.

4. The method of claim 3, wherein, The first parameter includes one or more of the following: The detection period of the first signal; The length of the detection occasion of the first signal; The spatial information corresponding to the detection occasion of the first signal; The length of a time unit corresponding to the first signal.

5. The method according to any one of claims 1-4, characterized in that, The duration of the first signal overlaps with the detection occasion of the first signal.

6. The method according to any one of claims 1-5, characterized in that, The duration of the first signal is greater than or equal to the detection period of the first signal.

7. The method according to any one of claims 1-5, characterized in that, The duration of the first signal is less than the detection period of the first signal, and the first signal is periodically sent.

8. The method of claim 7, wherein, The sending period of the first signal is determined based on the detection period of the first signal.

9. The method according to claim 7 or 8, characterized in that, The sending period of the first signal is determined based on the detection period of the first signal and a time offset.

10. The method of claim 9, wherein, The time offset is determined based on the length of the detection occasion of the first signal.

11. The method according to claim 9 or 10, characterized in that, The value of the time offset is less than or equal to the length of the detection occasion of the first signal.

12. The method according to any one of claims 9-11, characterized in that, The value of the time offset is equal to N times the length of a time unit, N being a positive integer.

13. The method according to any one of claims 1-12, characterized in that, The length of the first signal in the time domain is less than or equal to half the length of the detection occasion of the first signal.

14. The method of any one of claims 1-13, wherein, The duration of the first signal includes one or more time units, and the first signal is sent in each time unit of the one or more time units.

15. The method of claim 14, wherein, The length of each time unit of the one or more time units is less than or equal to half the length of the detection occasion of the first signal.

16. The method according to claim 14 or 15, characterized in that, The first signal sent in each time unit of the one or more time units occupies the time domain of the each time unit, or the first signal sent in each time unit of the one or more time units occupies part of the time in the each time unit.

17. The method according to any one of claims 14-16, characterized by, The number of first signals sent in different time units of the one or more time units is the same or different.

18. The method of any one of claims 1-5, wherein, The first signal is sent by the terminal device based on adjusting the timing information of the terminal device by a timing offset.

19. The method of claim 18, wherein, The first signal is sent at a first time interval, the first time interval being determined based on the detection period of the first signal and / or the timing offset, and the value of the timing offset being less than the length of a time unit.

20. The method of claim 19, wherein, The first time interval is equal to the sum of the detection period of the first signal and the timing offset.

21. The method of any one of claims 18-20, wherein, The first signal is detected in time units.

22. The method of any one of claims 18-21, wherein, The first signal is periodically detected in time units.

23. The method of any one of claims 1-22, wherein, The first signal is transmitted based on a second parameter, the second parameter comprising one or more of the following: a duration of the first signal; a transmission period of the first signal; timing information of the terminal device transmitting the first signal; a timing offset corresponding to the first signal; spatial information corresponding to the duration of the first signal; a length of a time unit corresponding to the first signal.

24. The method of claim 23, wherein, The second parameter is predefined or preconfigured.

25. The method of claim 23 or 24, wherein, The second parameter is configured based on one or more of the following granularity: carrier, frequency band, frequency band combination, frequency range.

26. The method of any one of claims 1-25, wherein, After the terminal device transmits the first signal to the network device corresponding to the first cell, the method further comprises: The terminal device detects the response information transmitted by the network device, the response information being used to indicate the reception of the first signal.

27. The method of claim 26, wherein, The response information comprises one or more of the following: related information of a synchronization signal of the first cell; related information of system information of the first cell; a discovery signal of the first cell; access control information of the first cell, the access control information being used to indicate whether the terminal device can access the first cell.

28. The method of any one of claims 1-27, wherein, The first parameter for detecting the first signal is indicated by the network device or predefined.

29. The method of any one of claims 1-28, wherein, The first signal is transmitted based on different spatial information on different time units, and / or the first signal is received based on different spatial information on different time units.

30. The method of any one of claims 1-29, wherein, The first signal is transmitted on a resource for random access.

31. The method of any one of claims 1-30, wherein, The first cell belongs to one or more of the following: a primary cell, a cell for cell selection, a cell for cell access.

32. The method of any one of claims 1-31, wherein, The first cell is a network energy saving cell, or the first cell is a cell in a network energy saving state.

33. A method of wireless communication, the method comprising: Comprise: The network device corresponding to the first cell receives the first signal transmitted by the terminal device, the first signal being used to trigger the network device to transmit a synchronization signal and / or system information of the first cell; wherein the first signal is received based on an asynchronous manner; or the first signal is transmitted based on timing information of the first cell, and the timing information is obtained by the terminal device from the first cell.

34. The method of claim 33, wherein, The detection manner of the first signal is related to the manner in which the terminal device transmits the first signal.

35. The method of claim 34, wherein, The detection manner of the first signal is related to the manner in which the terminal device transmits the first signal, comprising that the detection manner of the first signal is determined based on a second parameter in which the terminal device transmits the first signal.

36. The method of claim 35, wherein, The second parameter comprises one or more of the following: a duration of the first signal; a transmission period of the first signal; spatial information corresponding to the duration of the first signal; a length of a time unit corresponding to the first signal.

37. The method of any one of claims 33-36, wherein, The detection occasion of the first signal overlaps with the duration of the first signal.

38. The method of any one of claims 33-37, wherein, The detection period of the first signal is less than or equal to the duration of the first signal.

39. The method of any one of claims 33-37, wherein, The detection period of the first signal is greater than the duration of the first signal, and the first signal is periodically transmitted.

40. The method of claim 39, wherein, The detection period of the first signal is determined based on the transmission period of the first signal.

41. The method of claim 39 or 40, wherein, The detection period of the first signal is determined based on the transmission period of the first signal and a time offset.

42. The method of claim 41, wherein, The time offset is determined based on the length of the duration of the first signal.

43. The method of claim 41 or 42, wherein, The time offset is equal to N times the length of a time unit, N being a positive integer.

44. The method of any one of claims 33-43, wherein, The length of the detection occasion of the first signal is greater than or equal to twice the length of the first signal in the time domain.

45. The method of any one of claims 33-44, wherein, The duration of the first signal includes one or more time units, and the first signal is transmitted in each of the one or more time units.

46. The method of claim 45, wherein, The length of the detection occasion of the first signal is greater than or equal to twice the length of each of the one or more time units.

47. The method of claim 45 or 46, wherein, The first signal transmitted in each of the one or more time units occupies the entire time unit in the time domain, or the first signal transmitted in each of the one or more time units occupies part of the time unit in the time domain.

48. The method of any one of claims 45-47, wherein, The number of first signals transmitted in different time units of the one or more time units is the same or different.

49. The method of any one of claims 33-48, wherein, The first signal is detected based on a first parameter, and the first parameter includes one or more of the following: The detection period of the first signal; The length of the detection occasion of the first signal; The spatial information corresponding to the detection occasion of the first signal; The length of a time unit corresponding to the first signal.

50. The method of claim 49, wherein, The first parameter is predefined or preconfigured.

51. The method of claim 49 or 50, wherein, The first parameter is configured based on one or more of the following granularity: carrier, frequency band, frequency band combination, frequency range.

52. The method of any one of claims 33-51, wherein, After the network device corresponding to the first cell receives the first signal transmitted by the terminal device, the method further includes: The network device sends response information to the terminal device, and the response information is used to indicate the reception of the first signal.

53. The method of claim 52, wherein, The response information includes one or more of the following: Related information of the synchronization signal of the first cell; Related information of the system information of the first cell; Discovery signal of the first cell; Access control information of the first cell, which is used to indicate whether the terminal device can access the first cell.

54. The method of any one of claims 33-53, wherein, The first parameter for detecting the first signal is indicated by the network device or is predefined.

55. The method of any one of claims 33-54, wherein, The first signal is transmitted in different time units based on different spatial information, and / or the first signal is received in different time units based on different spatial information.

56. The method of any one of claims 33-55, wherein, The first signal is transmitted on a resource for random access.

57. The method of any one of claims 33-56, wherein, The first cell belongs to one or more of the following: primary cell, cell for cell selection, and cell for cell access.

58. The method of any one of claims 33-57, wherein, The first cell is a network energy saving cell, or the first cell is a cell in a network energy saving state.

59. A terminal device, comprising: It includes: The sending module is configured to send a first signal to a network device corresponding to the first cell, where the first signal is used to trigger the network device to send a synchronization signal and / or system information of the first cell. The first signal is sent in a non-synchronized manner, or the first signal is sent based on timing information of the first cell, and the timing information is obtained by the terminal device from the first cell.

60. The terminal device of claim 59, wherein, The sending manner of the first signal is related to a manner in which the network device detects the first signal.

61. The terminal device of claim 60, wherein, The sending manner of the first signal is related to a manner in which the network device detects the first signal, including that the sending manner of the first signal is determined based on a first parameter in which the network device detects the first signal.

62. The terminal device of claim 61, wherein, The first parameter includes one or more of the following: A detection period of the first signal; A length of a detection occasion of the first signal; Spatial information corresponding to the detection occasion of the first signal; A length of a time unit corresponding to the first signal.

63. The terminal device of any one of claims 59-62, wherein, A duration of the first signal overlaps with the detection occasion of the first signal.

64. The terminal device of any one of claims 59-63, wherein, The duration of the first signal is greater than or equal to the detection period of the first signal.

65. The terminal device of any one of claims 59-63, wherein, The duration of the first signal is less than the detection period of the first signal, and the first signal is periodically sent.

66. The terminal device of claim 65, wherein, The sending period of the first signal is determined based on the detection period of the first signal.

67. The terminal device of claim 65 or 66, wherein, The sending period of the first signal is determined based on the detection period of the first signal and a time offset.

68. The terminal device of claim 67, wherein, The time offset is determined based on the length of the detection occasion of the first signal.

69. The terminal device of claim 67 or 68, wherein, The time offset is less than or equal to the length of the detection occasion of the first signal.

70. The terminal device of any one of claims 67-69, wherein, The time offset is equal to N times the length of a time unit, where N is a positive integer.

71. The terminal device of any one of claims 59-70, wherein, The length of the first signal in the time domain is less than or equal to half of the length of the detection occasion of the first signal.

72. The terminal device of any one of claims 59-71, wherein, The duration of the first signal includes one or more time units, and the first signal is sent in each time unit of the one or more time units.

73. The terminal device of claim 72, wherein, The length of each time unit of the one or more time units is less than or equal to half of the length of the detection occasion of the first signal.

74. The terminal device of claim 72 or 73, wherein, The first signal sent in each time unit of the one or more time units occupies the time unit in the time domain, or the first signal sent in each time unit of the one or more time units occupies part of the time unit in the time domain.

75. The terminal device of any one of claims 72-74, wherein, The number of the first signals sent in different time units of the one or more time units is the same or different.

76. The terminal device of any one of claims 59-63, wherein, The first signal is sent by the terminal device based on adjustment of timing information of the terminal device by a timing offset.

77. The terminal device of claim 76, wherein, The first signal is sent at a first time interval, the first time interval is determined based on the detection period of the first signal and / or the timing offset, and the value of the timing offset is less than the length of a time unit.

78. The terminal device of claim 77, wherein, The first time interval is equal to the sum of the detection period of the first signal and the timing offset.

79. The terminal device of any one of claims 76-78, wherein, The first signal is detected in time units.

80. The terminal device of any one of claims 76-79, wherein, The first signal is periodically detected in time units.

81. The terminal device of any one of claims 59-80, wherein, The first signal is transmitted based on a second parameter, the second parameter comprising one or more of the following: a duration of the first signal; a transmission period of the first signal; timing information of the terminal device transmitting the first signal; a timing offset corresponding to the first signal; spatial information corresponding to the duration of the first signal; a length of a time unit corresponding to the first signal.

82. The terminal device of claim 81, wherein, The second parameter is predefined or preconfigured.

83. The terminal device of claim 81 or 82, wherein, The second parameter is configured based on one or more of the following granularity: carrier, frequency band, frequency band combination, frequency range.

84. The terminal device of any one of claims 59-83, wherein, The terminal device further comprises: a detection module configured to detect response information transmitted by the network device, the response information being used to indicate a reception condition of the first signal.

85. The terminal device of claim 84, wherein, The response information comprises one or more of the following: related information of a synchronization signal of the first cell; related information of system information of the first cell; a discovery signal of the first cell; access control information of the first cell, the access control information being used to indicate whether the terminal device can access the first cell.

86. The terminal device of any one of claims 59-85, wherein, The first parameter of detecting the first signal is indicated by a network device or predefined.

87. The terminal device of any one of claims 59-86, wherein, The first signal is transmitted based on different spatial information on different time units, and / or the first signal is received based on different spatial information on different time units.

88. The terminal device of any one of claims 59-87, wherein, The first signal is transmitted on a resource for random access.

89. The terminal device of any one of claims 59-88, wherein, The first cell belongs to one or more of the following: a primary cell, a cell for cell selection, a cell for cell access.

90. The terminal device of any one of claims 59-89, wherein, The first cell is a network energy saving cell, or the first cell is a cell in a network energy saving state.

91. A network device, comprising: The network device is a network device corresponding to the first cell, and the network device comprises: a receiving module configured to receive a first signal transmitted by a terminal device, the first signal being used to trigger the network device to transmit a synchronization signal and / or system information of the first cell; wherein the first signal is received based on an asynchronous manner; or the first signal is transmitted based on timing information of the first cell, and the timing information is acquired by the terminal device from the first cell.

92. The network device of claim 91, wherein, The detection manner of the first signal is related to a manner in which the terminal device transmits the first signal.

93. The network device of claim 92, wherein, The detection manner of the first signal is related to a manner in which the terminal device transmits the first signal, comprising that the detection manner of the first signal is determined based on a second parameter of the terminal device transmitting the first signal.

94. The network device of claim 93, wherein, The second parameter comprises one or more of the following: a duration of the first signal; a transmission period of the first signal; spatial information corresponding to the duration of the first signal; a length of a time unit corresponding to the first signal.

95. The network device of any of claims 91-94, wherein, A detection occasion of the first signal overlaps with a duration of the first signal.

96. The network device of any of claims 91-95, wherein, A detection period of the first signal is less than or equal to a duration of the first signal.

97. The network device of any of claims 91-95, wherein, The detection period of the first signal is greater than the duration of the first signal, and the first signal is periodically transmitted.

98. The network device of claim 97, wherein, The detection period of the first signal is determined based on the transmission period of the first signal.

99. The network device of claim 97 or 98, wherein, The detection period of the first signal is determined based on the transmission period of the first signal and a time offset.

100. The network device of claim 99, wherein, The time offset is determined based on the length of the duration of the first signal.

101. The network device of claim 99 or 100, wherein, The time offset is equal to N times the length of a time unit, N being a positive integer.

102. The network device of any of claims 91-101, wherein, The length of the detection occasion of the first signal is greater than or equal to twice the length of the first signal in the time domain.

103. The network device of any of claims 91-102, wherein, The duration of the first signal includes one or more time units, and the first signal is transmitted in each of the one or more time units.

104. The network device of claim 103, wherein, The length of the detection occasion of the first signal is greater than or equal to twice the length of each of the one or more time units.

105. The network device of claim 103 or 104, wherein, The first signal transmitted in each of the one or more time units occupies the entire time unit in the time domain, or the first signal transmitted in each of the one or more time units occupies part of the time unit in the time domain. 106.The network device of any of claims 103-105, wherein, The number of first signals transmitted in different time units of the one or more time units is the same or different.

107. The network device of any of claims 91-106, wherein, The first signal is detected based on a first parameter, and the first parameter includes one or more of the following: The detection period of the first signal; The length of the detection occasion of the first signal; The spatial information corresponding to the detection occasion of the first signal; The length of a time unit corresponding to the first signal.

108. The network device of claim 107, wherein, The first parameter is predefined or preconfigured.

109. The network device of claim 107 or 108, wherein, The first parameter is configured based on one or more of the following granularity: carrier, frequency band, frequency band combination, frequency range.

110. The network device of any of claims 91-109, wherein, The network device further includes: A sending module configured to send response information to the terminal device, the response information being used to indicate the reception of the first signal.

111. The network device of claim 110, wherein, The response information includes one or more of the following: The related information of the synchronization signal of the first cell; The related information of the system information of the first cell; The discovery signal of the first cell; The access control information of the first cell, the access control information being used to indicate whether the terminal device can access the first cell.

112. The network device of any of claims 91-111, wherein, The first parameter for detecting the first signal is indicated by the network device or predefined.

113. The network device of any of claims 91-112, wherein, The first signal is transmitted based on different spatial information in different time units, and / or the first signal is received based on different spatial information in different time units.

114. The network device of any of claims 91-113, wherein, The first signal is transmitted on a resource for random access.

115. The network device of any of claims 91-114, wherein, The first cell belongs to one or more of the following: a primary cell, a cell for cell selection, and a cell for cell access.

116. The network device of any of claims 91-115, wherein, The first cell is a network energy saving cell, or the first cell is a cell in a network energy saving state.

117. A terminal device, comprising: A terminal device comprising a transceiver, a memory for storing a program, and a processor for invoking the program in the memory and controlling the transceiver to receive or send a signal, so as to make the terminal device perform the method according to any one of claims 1-32. 118.A network device, characterized by, A network device comprising a transceiver, a memory for storing a program, and a processor for invoking the program in the memory and controlling the transceiver to receive or send a signal, so as to make the network device perform the method according to any one of claims 33-58.

119. An apparatus, comprising: An apparatus comprising a processor for invoking a program from a memory, so as to make the apparatus perform the method according to any one of claims 1-32 or 33-58.

120. A chip, comprising: A chip comprising a processor for invoking a program from a memory, so that the device installed with the chip performs the method according to any one of claims 1-32 or 33-58.

121. A computer readable storage medium, characterized in that, A computer program product having stored thereon a program, the program causing a computer to perform the method according to any one of claims 1-32 or 33-58.

122. A computer program product, characterized in that, A computer program product comprising a program, the program causing a computer to perform the method according to any one of claims 1-32 or 33-58.

123. A computer program characterised in that, The computer program product causes a computer to perform the method according to any one of claims 1-32 or 33-58.

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