Wireless communication method, terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method includes: a first terminal device receiving first information from a first cell; and the first terminal device sending second information according to the first information, the second information being used for requesting to receive system information of a second cell.

Description

Wireless communication method, terminal device, and network device Technical Field

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

[0002] Network energy saving (NES) cells can send system information based on terminal device requests, thereby reducing energy consumption. How terminal devices should access NES cells is a problem that needs to be solved.

[0003] Summary of the Invention

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

[0005] In a first aspect, a wireless communication method is provided, including: a first terminal device receives first information from a first cell; the first terminal device sends second information in a second cell based on the first information, and the second information is used to request reception of system information of the second cell.

[0006] In a second aspect, a wireless communication method is provided, including: a network device sends first information through a first cell, the first information is used by a terminal device to send second information in a second cell, and the second information is used by the terminal device to request to receive system information of the second cell.

[0007] According to a third aspect, a terminal device is provided, which is a first terminal device, and includes: a first communication module for receiving first information from a first cell; a second communication module for sending second information in a second cell based on the first information, and the second information is used to request reception of system information of the second cell.

[0008] In a fourth aspect, a network device is provided, including: a first communication module, used to send first information through a first cell, the first information is used by the terminal device to send second information in a second cell, and the second information is used by the terminal device to request to receive system information of the second cell.

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

[0010] In the sixth aspect, a network device is provided, comprising a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method described in the second aspect.

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

[0012] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program product is provided, characterized in that it includes a program, and the program enables a computer to execute the method described in the first aspect or the second aspect.

[0015] In an eleventh aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in the first aspect or the second aspect.

[0016] In the embodiment of the present application, the terminal device obtains first information from the first cell and requests to receive system information of the second cell (NES cell) based on the first information. The introduction of the first information helps the terminal device access the NES cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a diagram illustrating an example of a system architecture of a wireless communication system to which an embodiment of the present application may be applied.

[0018] FIG2 is an example diagram of an application scenario of an embodiment of the present application.

[0019] FIG3 is a flow chart of a wireless communication method provided in one embodiment of the present application.

[0020] FIG4 is a more specific example diagram of the method shown in FIG3 .

[0021] FIG. 5 is another more specific example diagram of the method shown in FIG. 3 .

[0022] FIG6 is a flowchart of a wireless communication method provided in another embodiment of the present application.

[0023] FIG7 is an example diagram of a cell access process provided by an embodiment of the present application.

[0024] FIG8 is an example diagram of a cell access process provided by another embodiment of the present application.

[0025] Figure 9 is an example diagram of the association relationship between the first resource (used to carry the second information, the second information is used to request the system information of the receiving cell) and the synchronization signal block (synchronization signal block, SSB) provided in an embodiment of the present application.

[0026] Figure 10 is an example diagram of the implementation method of the seventh information (used to indicate whether it is necessary to monitor the type 0 physical downlink control channel (type0-physical downlink control channel, Type0-PDCCH)) provided in an embodiment of the present application.

[0027] FIG11 is an example diagram of a method for determining the starting resource position of a first resource provided in an embodiment of the present application.

[0028] FIG12 is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application.

[0029] FIG13 is a schematic diagram of the structure of the network device provided in an embodiment of the present application.

[0030] FIG14 is a schematic diagram of a device to which an embodiment of the present application can be applied. DETAILED DESCRIPTION

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

[0032] Figure 1 is a diagram illustrating an example of the system architecture of a wireless communication system 100 to which an embodiment of the present application may be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide network coverage for a specific geographical area and may communicate with the terminal device 120 located within the coverage area. The terminal device 120 may access a network (e.g., a wireless network) through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0033] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: 5G system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0034] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity that provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D). For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0035] The network device in the embodiment of the present application may be a device for communicating with a terminal device. The network device may be, for example, an access network device or a wireless access network device. For example, the network device may be a base station. The base station may broadly cover the following various names, or be replaced with the following names: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmitting point (TP), home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, base band 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 may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof.

[0036] In traditional communication systems (such as traditional NR systems), network devices periodically send system information (such as system information block (SIB) 1). This system information is very important for idle terminal devices because idle terminal devices can access network devices based on this system information.

[0037] However, some information in the periodically transmitted system information will be wasted (for example, at a certain moment, the network device sends system information, but at this time there is no terminal device that needs to obtain the system information). In addition, because the network device needs to maintain the system information all the time, the network device cannot enter deep sleep mode to save power consumption. According to statistics from operators, power consumption is one of the main sources of operating costs for operators. Therefore, if the energy consumption of network equipment can be reduced, it will not only help to better operate future cellular systems, but also be helpful to the ecosystem (it can reduce carbon emissions and thus slow down the rate of global warming). However, if the network device directly deletes the system information, it will cause the idle terminal device to be unable to access the cell. Therefore, an ideal way is to optimize the transmission of system information, that is, the terminal device can request the system information of the cell on demand, and the network device only transmits the system information to the terminal device when the system information needs to be transmitted.

[0038] An embodiment of the present application provides a wireless communication method that helps a terminal device request system information of a cell on demand.

[0039] Figure 2 is an example diagram of an application scenario of an embodiment of the present application. As shown in Figure 2, the cells within the coverage area of ​​the network device include cell 1, cell 2, and cell 3. Among them, cell 1 and cell 3 are ordinary cells; cell 2 is an NES cell. The difference between ordinary cells and NES cells is that NES cells do not periodically broadcast system information (such as SIB1). When a terminal device wishes to access an NES cell, the terminal device can request the system information of the NES cell from the network device. After receiving the request, the NES cell can start sending system information. It can be seen that the NES cell transmits system information on demand, thereby significantly saving power / energy. It should be understood that Figure 2 is illustrated by taking cells 1 to 3 belonging to the same network device as an example, but the embodiments of the present application are not limited to this. For example, cell 1, cell 2, and cell 3 can belong to different network devices respectively. Alternatively, two cells from cells 1 to 3 belong to the same network device, and the other cell belongs to another network device.

[0040] Figure 3 is a flow chart of the wireless communication method provided in an embodiment of the present application. The method shown in Figure 3 is described from the perspective of the interaction between the first terminal device and the network device. The first terminal device can be a terminal device that supports NES technology (supports network devices to transmit system information on demand). The first terminal device can be called a new terminal device, a terminal device of version 19 (release 19, R19) or later. In addition, in an embodiment of the present application, a terminal device that does not support access to or resides in an NES cell (or a terminal device that does not support network devices to transmit system information on demand) is referred to as a second terminal device, and the second terminal device can also be understood as an earlier version of a terminal device or a traditional terminal device.

[0041] 3 , in step S310 , a first terminal device receives first information from a first cell. The first cell may be, for example, a common cell, that is, a cell that periodically broadcasts system information.

[0042] The first information may be information related to the second cell. The second cell mentioned here may be referred to as an NES cell, or a cell that sends system information on demand. For example, the first information may be used by the terminal device to obtain the system information of the second cell. The system information mentioned in the embodiments of the present application may include SIB1. As an example, the system information mentioned in the embodiments of the present application refers to SIB1.

[0043] In step S320, the first terminal device sends second information in the second cell based on the first information. The second information can be sent by the first terminal device in an idle state or an inactive state. The second information is used to request to receive system information of the second cell. In other words, the second information is used to request or trigger the second cell to send system information. The second information can be called a request signal or an on-demand (OD) signal. As an example, the second information can be an uplink wake-up signal (WUS).

[0044] The embodiment of the present application introduces first information in the first cell. The first information can help the terminal device receive system information of the second cell (NES cell), thereby facilitating the terminal device to access the NES cell.

[0045] The following is a detailed explanation of the content, purpose or carrying location of the first information with examples.

[0046] In some implementations, the first information may be carried in system information sent by the first cell. For example, the first information may be carried in one or more of SIB1, SIB2, SIB3, and SIB4 sent by the first cell. If the first information is carried in one or more of SIB2, SIB3, and SIB4, the first terminal device may first obtain SIB1 in the first cell, and then obtain other system information such as SIB2, SIB3, or SIB4 through SIB1, thereby obtaining the first information.

[0047] In some implementations, the first information can be used for cell reselection. That is, the first information can be cell reselection information for the first cell. In this embodiment of the present application, the first information is added to the cell reselection information to help the first terminal device reselect to the second cell (such as an NES cell) through the cell reselection process. Thus, this implementation is equivalent to providing an enhanced cell reselection solution.

[0048] In some implementations, the first information (such as cell reselection information) may include one or more of the following information:

[0049] The third information is used to indicate the frequency corresponding to the second cell;

[0050] The fourth information is used to send the second information;

[0051] Fifth information, used to receive system information of the second cell;

[0052] The sixth information is used to indicate the cell identifier (such as physical cell identity (PCI)) of the second cell.

[0053] In some implementations, the first information may include fourth information (used to send the second information). For example, the fourth information can be used to determine the first resource, and the first resource is used to carry the second information. The fourth information may be resource configuration information of the first resource. After obtaining the fourth information, the first terminal device can determine the first resource according to the indication of the fourth information, and send the second information through the first resource. The first resource refers to the resource in the second cell used to carry the second information. The first resource can be a periodic resource or a non-periodic resource. For a detailed description of the first resource, please refer to the following text and will not be described in detail here. If the first resource is a periodic resource, the fourth information can be used to indicate or determine the starting resource (position) and / or period length of the periodic resource.

[0054] In some implementations, the first information may include fifth information (for receiving system information of the second cell). The fifth information may be, for example, configuration information of system information (such as SIB1). Exemplarily, the fifth information may include one or more of the following information: configuration information of the search space of Type0-PDCCH of the second cell, configuration information of control resource set (CORESET) 0 of the second cell. Based on the fifth information, the first terminal device may monitor the Type0-PDCCH sent by the second cell, thereby obtaining the SIB1 of the second cell.

[0055] In some implementations, the first information may include third information (used to indicate a frequency corresponding to the second cell). The frequency corresponding to the second cell may indicate a frequency corresponding to an SSB sent by the second cell, that is, the second cell sends an SSB on the frequency indicated by the third information.

[0056] Furthermore, in some implementations, the second cell may transmit an SSB at a frequency corresponding to a global synchronization channel number (GSCN). That is, the frequency at which the second cell transmits the SSB corresponds to a synchronization raster. In this case, the third information may directly indicate the GSCN (or the number of the synchronization raster).

[0057] Alternatively, in some implementations, the second cell sends the SSB at a first frequency, and the first frequency does not belong to the frequency corresponding to the GSCN (ie, it is not the frequency corresponding to the synchronization grid).

[0058] If the second cell sends an SSB at the frequency corresponding to the GSCN, in order to prevent the second terminal device (such as a traditional terminal device) from accessing the second cell, in some implementations, the SSB sent by the second cell at the frequency corresponding to the GSCN (hereinafter referred to as the first SSB) may not include the fifth information mentioned above (such as the configuration information of SIB1). For example, the master information block (MIB) in the first SSB may indicate that the first SSB is an SSB of an undefined cell (non-cell-defined SSB). That is, the MIB in the first SSB does not indicate the configuration information of the search space of Type0-PDCCH and / or the configuration information of CORESET0. Since the first SSB does not contain the fifth information (such as the configuration information of SIB1), the second terminal device (such as a traditional terminal device) cannot reside in or access the second cell, thereby reducing the impact of NES technology (system information sent on demand) on traditional terminal devices. For the first terminal device, the fifth information can be obtained from the first cell based on the method described above to ensure that it can reside in or access the second cell.

[0059] If the frequency at which the second cell sends the SSB (hereinafter referred to as the second SSB) does not belong to the frequency corresponding to the GSCN, the second terminal device (such as a traditional terminal device) will not discover the second SSB, thereby effectively avoiding the second terminal device (such as a traditional terminal device) from residing in or accessing the second cell, thereby reducing the impact of NES technology (sending system information on demand) on traditional terminal devices. Taking into account that the second terminal device (such as a traditional terminal device) will not discover the second SSB, the second SSB may include the fifth information mentioned above (such as the configuration information of SIB1) to facilitate the first terminal device to reside in or access the second cell. If the second SSB contains the fifth information, the first information may or may not contain the fifth information, and this embodiment of the present application does not specifically limit this.

[0060] In some implementations, the first information is information that the second terminal device (such as a traditional terminal device) cannot recognize (or cannot read). Since the second terminal device (such as a traditional terminal device) cannot reside in the second cell, setting the first information to information that the second terminal device (such as a traditional terminal device) cannot recognize can effectively reduce the impact of NES technology on traditional terminal devices. As mentioned above, the first information may be the cell reselection information of the first cell. The first terminal device and the second terminal device may both reside in or access the first cell and obtain the cell reselection information of the first cell. The first information in the cell reselection information is set to information that the second terminal device cannot recognize (or is set to information that only the first terminal device can recognize), so that the second terminal device cannot reselect to the second cell based on the cell reselection information. It can be seen that this implementation provides an enhanced cell reselection scheme, and the cell reselection scheme can avoid the impact of the introduction of NES cells on traditional terminal devices.

[0061] The following describes the embodiments of the present application in more detail with reference to specific examples. It should be noted that the examples of Figures 4 to 5 are merely intended to help those skilled in the art understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific numerical values ​​or specific scenarios illustrated. It is apparent that those skilled in the art can make various equivalent modifications or changes based on the examples of Figures 4 to 5, and such modifications or changes also fall within the scope of the embodiments of the present application.

[0062] Example 1:

[0063] Referring to Figure 4, in Example 1, it is assumed that cell 1 and cell 3 are ordinary cells, and cell 2 is a NES cell that does not broadcast SIB1. When the terminal device resides in cell 1 or cell 3 through synchronization grid 1 or 2 respectively, the terminal device can obtain SIB1 from cell 1 or cell 3, and further obtain cell reselection information. The cell reselection information can be contained in any SIB, such as SIB2, SIB3, SIB4, etc. In Example 1, the cell reselection information includes first information (relevant information of cell 2). For example, the cell reselection information includes one or more of the following information of cell 2: GSCN, resource configuration information of the request message for requesting SIB1, configuration information of type0-PDCCH search space of cell 2, and configuration information of COREST0 of cell 2. In addition, the relevant information of cell 2 can only be read by the new terminal device (corresponding to the first terminal device mentioned above), which means that the old terminal device (corresponding to the second terminal device mentioned above) cannot read this information. At the same time, the MIB in the SSB corresponding to synchronization grid 3 indicates that the SSB is an SSB of an undefined cell, which means that the MIB in the SSB does not indicate type0-PDCCH search space and / or COREST0. Therefore, when the old terminal device obtains the SSB of cell 2, it will understand that the SSB of cell 2 is an SSB of an undefined cell. Therefore, the old terminal device will not access cell 2. In addition, as mentioned above, when the old terminal device resides on cell 1 or cell 3, after reading SIB1, it cannot read any information related to the NES cell (cell 2), so the old terminal device will not try to access cell 2 (because for the old terminal device, cell 2 is not a candidate cell in the cell reselection list). Therefore, only new terminal devices (such as R19 or later terminal devices) can obtain relevant information about cell 2 and can access cell 2.

[0064] Example 2:

[0065] Referring to Figure 5, in Example 2, cell 2 does not send an SSB on the synchronization grid, but transmits the SSB on a frequency outside the synchronization grid. The SSB may include a common MIB to provide the necessary information for the initial access of the terminal device to the cell. For example, the MIB may include one or more of synchronization information, type0-PDCCH search space configuration information, and COREST0 configuration information. Since the SSB is not transmitted on the synchronization grid, the old terminal device cannot receive the SSB and cannot discover this cell. For ordinary cells, such as cell 1 or cell 3, their SSBs are transmitted on synchronization grids 1 and 2 respectively. When the old terminal device or the new terminal device discovers this cell, they can obtain the SIB1 of the cell and obtain the relevant information of cell 2 directly through SIB1 or through other SIBs (such as SIB2, SIB3 or SIB4, etc.). The relevant information of cell 2 includes the frequency used to discover the SSB of cell 2 (i.e., the first frequency in Figure 5). Note that in this example, the first frequency is not at the synchronization grid or the first frequency does not belong to the frequency corresponding to the GSCN. In addition, the relevant information of cell 2 may also include resource configuration information for the request message for requesting SIB 1. Since the information of NES cell (cell 2) can only be read by the new terminal device, cell 2 can be a candidate cell for the new terminal device when performing cell reselection.

[0066] Figure 6 is a flow chart of a wireless communication method provided by another embodiment of the present application. The method of Figure 6 includes step S610, that is, the first terminal device sends second information in the second cell. The embodiment corresponding to Figure 6 and the embodiment corresponding to Figure 3 can be independent of each other or combined with each other. For example, in some implementations, the second information in step S610 can be sent based on the first information mentioned above. In this case, step S610 in Figure 6 and step S320 in Figure 3 can be understood as the same step.

[0067] In some implementations, step S610 may include: if the first terminal device does not monitor the Type0-PDCCH of the second cell and / or does not receive the system information of the second cell within the first duration, the first terminal device sends the second information in the second cell. The first duration mentioned here can be a fixed duration, or it can be determined based on the timing duration of the first timer. The start time of the first timer can be started when the first terminal device starts to detect the Type0-PDCCH of the second cell and / or starts to receive the system information of the second cell.

[0068] Exemplarily, the first terminal device starts monitoring Type0-PDCCH in the search space of type0-PDCCH and CORESET0, and starts a first timer. If the first terminal device does not monitor type0-PDCCH (or DCI) before the first timer expires, the first terminal device sends a second message in the second cell to request system information (such as SIB1). After the first terminal device sends the second message, it can continue to monitor Type0-PDCCH and / or receive system information of the second cell.

[0069] In some implementations, after the first terminal device sends the second information, if the first terminal device does not monitor the Type0-PDCCH of the second cell and / or does not receive the system information of the second cell within the second time period, the first terminal device may send the second information in the second cell again. The second time period may be a fixed time period, or may be determined based on the timing time period of the second timer. The start time of the second timer may be determined based on the sending time of the second information. For example, the second timer may be started after the first terminal device sends the second information. If the second timer times out, the first terminal device sends the second information in the second cell again, as shown in Figure 7. Of course, if the first terminal device monitors the Type0-PDCCH of the second cell and / or receives the system information of the second cell during the operation of the second timer, the first terminal device may access the second cell based on the Type0-PDCCH of the second cell and / or the system information of the second cell, as shown in Figure 8.

[0070] In some implementations, if the number of times the second information is sent is greater than or equal to the first threshold (the first threshold may refer to the maximum number of times the first terminal device is allowed to send the second information in the same NES cell), and the first terminal device has not monitored the Type0-PDCCH of the second cell and / or has not received the system information of the second cell, the first terminal device stops sending the second information. The value of the first threshold may be 4, for example, that is, after the first terminal device sends the second information 4 times, if the first terminal device still has not monitored the Type0-PDCCH of the second cell and / or has not received the system information of the second cell, the first terminal device is not allowed to continue sending the second information in the second cell. In this case, the first terminal device may try to access other cells.

[0071] In some implementations, the second cell can indicate to the terminal device whether it needs to monitor the Type0-PDCCH of the second cell in a certain manner, thereby reducing the power consumption required to monitor the PDCCH. For example, if the second cell indicates that it is not necessary to monitor the Type0-PDCCH of the second cell, the terminal device does not monitor the Type0-PDCCH of the second cell during the current SSB period; and / or, if it is determined based on the seventh information that the terminal device needs to monitor the Type0-PDCCH of the second cell, the first terminal device monitors the Type0-PDCCH of the second cell during the current SSB period. If the second cell indicates that it is not necessary to monitor the Type0-PDCCH of the second cell, the terminal device can obtain system information from other terminal devices (that is, the system information can be shared between terminal devices); or, the terminal device can also wait for the next SSB period to determine whether to monitor the Type0-PDCCH of the second cell.

[0072] For example, as shown in Figure 9, the first terminal device can receive the seventh information from the second cell. The seventh information is used to determine (or indicate) whether the terminal device needs to monitor the Type0-PDCCH of the second cell. The seventh information can be carried in one or more SSBs sent by the second cell. Exemplarily, the seventh information is carried in one or more of the following: a physical broadcast channel (PBCH) demodulation reference signal (DMRS) in one or more SSBs, a PBCH payload in one or more SSBs, and an MIB in one or more SSBs.

[0073] The second information mentioned above (used to request to receive the system information of the second cell) can be carried on one or more time domain and / or frequency domain resources configured by the network device. For the sake of convenience, the resource carrying the second information will be referred to as the first resource below, sometimes also referred to as an on-demand (OD) resource (that is, the terminal device can request system information on demand based on the resource). The following is a detailed example of carrying the first resource.

[0074] In some implementations, the first resource is a periodic resource. The starting resource position of the periodic resource may be associated with the first radio frame in the periodic radio frame. For example, the starting resource position of the periodic resource is located within the first radio frame. For another example, the starting resource position of the periodic resource is located within an offset radio frame with the first radio frame as a reference frame. The first radio frame may include a radio frame with a system frame number (SFN) of 0. Taking Figure 10 as an example, if the network device indicates that the offset value is 0, the terminal device determines that the starting resource position is the first time slot within SFN0; if the offset value is 10, the terminal device determines that the starting resource position is at the target position, which is the time slot position obtained after offsetting 10 time slots based on the first time slot of SFN0. Here, the unit of the offset value is time slot. Of course, the unit of the offset value may also be symbol or radio frame.

[0075] Furthermore, in some implementations, the period length of the periodic resource may be determined (or represented) based on the number of symbols, the number of time slots, or the number of frames.

[0076] In some implementations, the first resource is associated with one or more SSB indexes. For example, the first resource may be OD resource 1, OD resource 2, or OD resource 3 as shown in FIG11 . As can be seen from FIG11 , OD resource 1 is associated with SSB1 and SSB2; OD resource 2 is associated with SSB3 and SSB4; and OD resource 3 is associated with SSB5 and SSB6.

[0077] In some implementations, the first resource is associated with one or more Type 0-PDCCH monitoring occasions (MOs). Furthermore, the one or more Type 0-PDCCH monitoring occasions may also be associated with one or more SSB indexes.

[0078] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 11. The device embodiment of the present application is described in detail below in conjunction with Figures 12 to 14. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0079] Figure 12 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Terminal device 1200 shown in Figure 12 may include a first communication module 1210 and a second communication module 1220. First communication module 1210 is configured to receive first information from a first cell. Second communication module 1220 is configured to transmit second information to a second cell based on the first information, where the second information is used to request receipt of system information from the second cell.

[0080] In some implementations, the first information is used for cell reselection.

[0081] In some implementations, the first information includes one or more of the following information: third information, used to indicate the frequency corresponding to the second cell; fourth information, in some implementations, used to send the second information; fifth information, used to receive system information of the second cell; and sixth information, used to indicate the cell identifier of the second cell.

[0082] In some implementations, the third information is used to indicate a global synchronization channel number corresponding to the second cell.

[0083] In some implementations, the second cell sends a first SSB on the frequency corresponding to the global synchronization channel number, and the first SSB does not include the fifth information.

[0084] In some implementations, the third information is used to indicate a first frequency, and the first frequency does not belong to a frequency corresponding to a global synchronization channel number.

[0085] In some implementations, the second cell sends a second SSB on the first frequency, and the second SSB includes the fifth information.

[0086] In some implementations, the fourth information is used to determine a first resource, and the first resource is used to carry the second information.

[0087] In some implementations, the first resource is a periodic resource, and the fourth information is used to determine a starting resource and / or a period length of the periodic resource.

[0088] In some implementations, the fifth information includes one or more of the following: configuration information of the search space of the Type0-PDCCH of the second cell; configuration information of the control resource set CORESET0 of the second cell.

[0089] In some implementations, the first information is information that cannot be recognized by the second terminal device, and the second terminal device does not support accessing or residing in the second cell.

[0090] In some implementations, the second communication module 1220 is used to: if the first terminal device does not monitor the Type0-PDCCH of the second cell and / or does not receive the system information of the second cell within a first time period, send the second information in the second cell according to the first information.

[0091] In some implementations, the first duration is determined based on a timing duration of a first timer.

[0092] In some implementations, the terminal device 1200 also includes: a third communication module, which is used to send the second information again in the second cell after the first terminal device sends the second information in the second cell according to the first information, if the first terminal device does not monitor the Type0-PDCCH of the second cell and / or does not receive the system information of the second cell within a second time period.

[0093] In some implementations, the second duration is determined based on a timing duration of a second timer.

[0094] In some implementations, the start time of the second timer is determined based on the sending time of the second information.

[0095] In some implementations, the terminal device 1200 further includes: a stopping module, configured to stop sending the second information if the number of times the second information is sent is greater than or equal to a first threshold.

[0096] In some implementations, the second information is carried on a first resource, and the first resource satisfies one or more of the following: the first resource is a periodic resource; the first resource is associated with one or more SSB indexes; the first resource is associated with one or more Type0-PDCCH monitoring opportunities.

[0097] In some implementations, the first resource is a periodic resource, and the periodic resource satisfies one or more of the following: the starting resource position of the periodic resource is associated with the first wireless frame in the periodic wireless frame; the period length of the periodic resource is determined based on the number of symbols, the number of time slots, or the number of frames.

[0098] In some implementations, the first radio frame comprises a radio frame with a system frame number of 0.

[0099] In some implementations, the monitoring timing of the one or more Type0-PDCCHs is associated with the one or more SSB indices.

[0100] In some implementations, the terminal device 1200 further includes: a fourth communication module, configured to receive seventh information from the second cell, wherein the seventh information is used to determine whether the terminal device needs to monitor the Type0-PDCCH of the second cell.

[0101] In some implementations, the seventh information is carried in one or more SSBs sent by the second cell.

[0102] In some implementations, the seventh information is carried by one or more of the following: a physical broadcast channel demodulation reference signal PBCH DMRS sequence in the one or more SSBs; a PBCH payload in the one or more SSBs; or a master information block MIB in the one or more SSBs.

[0103] In some implementations, the terminal device further includes: a monitoring module for not monitoring the Type0-PDCCH of the second cell within the current SSB cycle if it is determined based on the seventh information that the terminal device does not need to monitor the Type0-PDCCH of the second cell; and / or, for monitoring the Type0-PDCCH of the second cell within the current SSB cycle if it is determined based on the seventh information that the terminal device needs to monitor the Type0-PDCCH of the second cell.

[0104] In some implementations, the system information includes a system information block SIB1.

[0105] In some implementations, the first information is carried by one or more of the following information of the first cell: SIB1, SIB2, SIB3, SIB4.

[0106] Figure 13 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. Network device 1300 shown in Figure 13 may include a first communication module 1310. First communication module 1310 is configured to send first information via a first cell, where the first information is used by a terminal device to send second information via a second cell, where the second information is used by the terminal device to request receipt of system information from the second cell.

[0107] In some implementations, the first information is used for cell reselection.

[0108] In some implementations, the first information includes one or more of the following information: third information, used to indicate the frequency corresponding to the second cell; fourth information, used to send the second information; fifth information, used to receive system information of the second cell; and sixth information, used to indicate the cell identifier of the second cell.

[0109] In some implementations, the third information is used to indicate a global synchronization channel number corresponding to the second cell.

[0110] In some implementations, the second cell sends a first SSB on the frequency corresponding to the global synchronization channel number, and the first SSB does not include the fifth information.

[0111] In some implementations, the third information is used to indicate a first frequency, and the first frequency does not belong to a frequency corresponding to a global synchronization channel number.

[0112] In some implementations, the second cell sends a second SSB on the first frequency, and the second SSB includes the fifth information.

[0113] In some implementations, the fourth information is used to determine a first resource, and the first resource is used to carry the second information.

[0114] In some implementations, the first resource is a periodic resource, and the fourth information is used to determine a starting resource and / or a period length of the periodic resource.

[0115] In some implementations, the fifth information includes one or more of the following: configuration information of the search space of the Type0-PDCCH of the second cell; configuration information of the control resource set CORESET0 of the second cell.

[0116] In some implementations, the first information is information that cannot be recognized by the second terminal device, and the second terminal device does not support accessing or residing in the second cell.

[0117] In some implementations, the second information is carried on a first resource, and the first resource satisfies one or more of the following: the first resource is a periodic resource; the first resource is associated with one or more SSB indexes; the first resource is associated with one or more Type0-PDCCH monitoring opportunities.

[0118] In some implementations, the first resource is a periodic resource, and the periodic resource satisfies one or more of the following: the starting resource position of the periodic resource is associated with the first wireless frame in the periodic wireless frame; the period length of the periodic resource is determined based on the number of symbols, the number of time slots, or the number of frames.

[0119] In some implementations, the first radio frame comprises a radio frame with a system frame number of 0.

[0120] In some implementations, the monitoring timing of the one or more Type0-PDCCHs is associated with the one or more SSB indices.

[0121] In some implementations, the network device 1300 further includes: a second communication module, configured to send seventh information through a second cell, where the seventh information is used to determine whether the terminal device needs to monitor the Type0-PDCCH of the second cell.

[0122] In some implementations, the seventh information is carried in one or more SSBs sent by the second cell.

[0123] In some implementations, the seventh information is carried by one or more of the following: a PBCH DMRS sequence in the one or more SSBs; a PBCH payload in the one or more SSBs; or an MIB in the one or more SSBs.

[0124] In some implementations, the system information includes a system information block SIB1.

[0125] In some implementations, the first information is carried by one or more of the following information of the first cell: SIB1, SIB2, SIB3, SIB4.

[0126] Figure 14 is a schematic block diagram of a communication device to which embodiments of the present application may be applied. Dashed lines in Figure 14 indicate that the unit or module is optional. Device 1400 may be used to implement the method described in the above method embodiment. Device 1400 may be a chip, a terminal device, or a network device.

[0127] The device 1400 may include one or more processors 1410. The processor 1410 may support the device 1400 to implement the method described in the method embodiment above. The processor 1410 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0128] The apparatus 1400 may further include one or more memories 1420. The memories 1420 store programs that can be executed by the processor 1410, causing the processor 1410 to perform the methods described in the above method embodiments. The memories 1420 may be independent of the processor 1410 or integrated into the processor 1410.

[0129] The apparatus 1400 may further include a transceiver 1430. The processor 1410 may communicate with other devices or chips via the transceiver 1430. For example, the processor 1410 may transmit and receive data with other devices or chips via the transceiver 1430.

[0130] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0131] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal device or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0132] The present application also provides a computer program that can be applied to a terminal device or network device provided in the present application, and enables a computer to execute the method performed by the terminal device or network device in each embodiment of the present application.

[0133] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0134] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0135] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0136] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0137] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0138] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0139] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0140] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0141] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0142] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0143] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0144] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0145] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that, Including: The first terminal device receives first information from a first cell; The first terminal device sends second information in a second cell according to the first information, and the second information is used to request to receive system information of the second cell.

2. The method according to claim 1, wherein The first information is used for cell reselection.

3. The method according to claim 1 or 2, characterized in that, The first information includes one or more of the following information: Third information, which is used to indicate the frequency corresponding to the second cell; Fourth information, which is used to send the second information; Fifth information, which is used to receive the system information of the second cell; Sixth information, which is used to indicate the cell identifier of the second cell.

4. The method according to claim 3, wherein The third information is used to indicate the global synchronization channel number corresponding to the second cell.

5. The method according to claim 4, wherein The second cell sends a first synchronization signal block SSB on the frequency corresponding to the global synchronization channel number, and the first SSB does not include the fifth information.

6. The method according to claim 3, wherein The third information is used to indicate a first frequency, and the first frequency does not belong to the frequency corresponding to the global synchronization channel number.

7. The method according to claim 6, wherein The second cell sends a second SSB on the first frequency, and the second SSB includes the fifth information.

8. The method according to any one of claims 3 to 7, characterized in that, The fourth information is used to determine a first resource, and the first resource is used to carry the second information.

9. The method according to claim 8, wherein The first resource is a periodic resource, and the fourth information is used to determine the starting resource and / or the period length of the periodic resource.

10. The method according to any one of claims 3 to 9, characterized in that The fifth information includes one or more of the following: Configuration information of the search space of the type 0 - physical downlink control channel Type0 - PDCCH of the second cell; Configuration information of the control resource set CORESET0 of the second cell.

11. The method according to any one of claims 1 to 10, characterized in that, The first information is information that cannot be recognized by a second terminal device, and the second terminal device does not support accessing or camping on the second cell.

12. The method according to any one of claims 1 to 11, characterized in that, The first terminal device sending the second information in the second cell according to the first information includes: If the first terminal device does not monitor the Type0 - PDCCH of the second cell and / or does not receive the system information of the second cell within a first duration, the first terminal device sends the second information in the second cell according to the first information.

13. The method according to claim 12, characterized in that, The first duration is determined based on the timing duration of a first timer.

14. The method according to any one of claims 1 to 13, characterized in that, After the first terminal device sends the second information in the second cell according to the first information, the method further includes: If the first terminal device does not monitor the Type0 - PDCCH of the second cell and / or does not receive the system information of the second cell within a second duration, the first terminal device sends the second information in the second cell again.

15. The method according to claim 14, wherein The second duration is determined based on the timing duration of a second timer.

16. The method according to claim 14 or 15, characterized in that, The start time of the second timer is determined based on the sending time of the second information.

17. The method according to any one of claims 1 to 16, characterized in that, The method further includes: If the number of times of sending the second information is greater than or equal to a first threshold, the first terminal device stops sending the second information.

18. The method according to any one of claims 1 to 17, characterized in that, The second information is carried on a first resource, and the first resource satisfies one or more of the following: The first resource is a periodic resource; The first resource is associated with one or more SSB indexes; The first resource is associated with the monitoring occasion of one or more Type0-PDCCHs.

19. The method according to claim 18, wherein The first resource is a periodic resource, and the periodic resource satisfies one or more of the following: The starting resource position of the periodic resource is associated with the first radio frame in a periodic radio frame; The period length of the periodic resource is determined based on the number of symbols, the number of time slots, or the number of frames.

20. The method according to claim 19, wherein The first radio frame includes a radio frame with a system frame number of 0.

21. The method according to any one of claims 18 to 20, characterized in that, The monitoring occasion of the one or more Type0-PDCCHs is associated with the one or more SSB indexes.

22. The method according to any one of claims 1 to 21, characterized in that, The method further includes: The first terminal device receives seventh information from the second cell, and the seventh information is used to determine whether the terminal device needs to monitor the Type0-PDCCH of the second cell.

23. The method according to claim 22, wherein The seventh information is carried in one or more SSBs sent by the second cell.

24. The method according to claim 23, wherein The seventh information is carried in one or more of the following: The physical broadcast channel demodulation reference signal PBCH DMRS sequence in the one or more SSBs; The PBCH payload in the one or more SSBs; The master information block MIB in the one or more SSBs.

25. The method according to any one of claims 22 to 24, characterized in that, The method further includes: If it is determined based on the seventh information that the terminal device does not need to monitor the Type0-PDCCH of the second cell, the first terminal device does not monitor the Type0-PDCCH of the second cell within the current SSB period; and / or If it is determined based on the seventh information that the terminal device needs to monitor the Type0-PDCCH of the second cell, the first terminal device monitors the Type0-PDCCH of the second cell within the current SSB period.

26. The method according to any one of claims 1 to 25, characterized in that, The system information includes system information block SIB1.

27. The method according to any one of claims 1 to 26, characterized in that, The first information is carried in one or more of the following information of the first cell: SIB1, SIB2, SIB3, SIB4.

28. A wireless communication method, characterized in that, Includes: The network device sends first information through the first cell, and the first information is used for the terminal device to send second information in the second cell, and the second information is used for the terminal device to request to receive the system information of the second cell.

29. The method according to claim 28, wherein The first information is used for cell reselection.

30. The method according to claim 28 or 29, characterized in that, The first information includes one or more of the following information: Third information, used to indicate the frequency corresponding to the second cell; Fourth information, used to send the second information; Fifth information, used to receive the system information of the second cell; Sixth information, used to indicate the cell identifier of the second cell.

31. The method according to claim 30, wherein The third information is used to indicate the global synchronization channel number corresponding to the second cell.

32. The method according to claim 31, wherein The second cell sends a first synchronization signal block SSB on the frequency corresponding to the global synchronization channel number, and the first SSB does not include the fifth information.

33. The method according to claim 30, wherein The third information is used to indicate a first frequency, and the first frequency does not belong to the frequency corresponding to the global synchronization channel number.

34. The method according to claim 33, wherein The second cell sends a second SSB on the first frequency, and the second SSB includes the fifth information.

35. The method according to any one of claims 30 to 34, characterized in that, The fourth information is used to determine a first resource, and the first resource is used to carry the second information.

36. The method according to claim 35, wherein The first resource is a periodic resource, and the fourth information is used to determine the starting resource and / or the period length of the periodic resource.

37. The method according to any one of claims 30 to 36, characterized in that The fifth information includes one or more of the following: Configuration information of the search space of the Type 0 - Physical Downlink Control Channel (Type0-PDCCH) of the second cell; Configuration information of the Control Resource Set (CORESET0) of the second cell.

38. The method according to any one of claims 28 to 37, characterized in that, The first information is information that cannot be recognized by the second terminal device, and the second terminal device does not support accessing or camping on the second cell.

39. The method according to any one of claims 28 to 38, characterized in that, The second information is carried on a first resource, and the first resource satisfies one or more of the following: The first resource is a periodic resource; The first resource is associated with one or more SSB indexes; The first resource is associated with the monitoring occasions of one or more Type0-PDCCHs.

40. The method according to claim 39, wherein The first resource is a periodic resource, and the periodic resource satisfies one or more of the following: The starting resource position of the periodic resource is associated with the first radio frame in the periodic radio frame; The period length of the periodic resource is determined based on the number of symbols, the number of time slots, or the number of frames.

41. The method according to claim 40, wherein The first radio frame includes a radio frame with a system frame number of 0.

42. The method according to any one of claims 39 to 41, characterized in that, The monitoring occasions of the one or more Type0-PDCCHs are associated with the one or more SSB indexes.

43. The method according to any one of claims 28 to 42, characterized in that, The method further includes: The network device sends seventh information through the second cell, and the seventh information is used to determine whether the terminal device needs to monitor the Type0-PDCCH of the second cell.

44. The method according to claim 43, wherein The seventh information is carried in one or more SSBs sent by the second cell.

45. The method according to claim 44, characterized in that, The seventh information is carried in one or more of the following: The Physical Broadcast Channel Demodulation Reference Signal (PBCH DMRS) sequence in the one or more SSBs; The PBCH payload in the one or more SSBs; The Master Information Block (MIB) in the one or more SSBs.

46. The method according to any one of claims 28 to 45, characterized in that, The system information includes System Information Block (SIB1).

47. The method according to any one of claims 28 to 46, characterized in that, The first information is carried in one or more of the following information of the first cell: SIB1, SIB2, SIB3, SIB4.

48. A terminal device, characterized in that, The terminal device is a first terminal device, and the first terminal device includes: A first communication module, configured to receive the first information from the first cell; A second communication module, configured to send second information in the second cell according to the first information, and the second information is used to request to receive the system information of the second cell.

49. The terminal device according to claim 48, characterized in that, The first information is used for cell reselection.

50. The terminal device according to claim 48 or 49, characterized in that, The first information includes one or more of the following information: Third information, used to indicate the frequency corresponding to the second cell; Fourth information, used to send the second information; Fifth information, used to receive the system information of the second cell; Sixth information, used to indicate the cell identifier of the second cell.

51. The terminal device according to claim 50, characterized in that, The third information is used to indicate the global synchronization channel number corresponding to the second cell.

52. The terminal device according to claim 51, characterized in that, The second cell sends a first Synchronization Signal Block (SSB) on the frequency corresponding to the global synchronization channel number, and the first SSB does not include the fifth information.

53. The terminal device according to claim 50, wherein The third information is used to indicate a first frequency, and the first frequency does not belong to the frequency corresponding to the global synchronization channel number.

54. The terminal device according to claim 53, wherein, The second cell sends a second SSB on the first frequency, and the second SSB contains the fifth information.

55. The terminal device according to any one of claims 50 to 54, characterized in that, The fourth information is used to determine a first resource, and the first resource is used to carry the second information.

56. The terminal device according to claim 55, characterized in that, The first resource is a periodic resource, and the fourth information is used to determine the starting resource and / or the period length of the periodic resource.

57. The terminal device according to any one of claims 50 to 56, characterized in that, The fifth information includes one or more of the following: Configuration information of the search space of the type 0 - physical downlink control channel (Type0-PDCCH) of the second cell; Configuration information of the control resource set (CORESET0) of the second cell.

58. The terminal device according to any one of claims 48 to 57, characterized in that, The first information is information that cannot be recognized by the second terminal device, and the second terminal device does not support accessing or camping on the second cell.

59. The terminal device according to any one of claims 48 to 58, characterized in that, The second communication module is used for: If the first terminal device does not detect the Type0-PDCCH of the second cell and / or does not receive the system information of the second cell within a first duration, then send the second information in the second cell according to the first information.

60. The terminal device according to claim 59, wherein, The first duration is determined based on the timing duration of a first timer.

61. The terminal device according to any one of claims 48 to 60, characterized in that The terminal device further includes: A third communication module, which is used, after the first terminal device sends the second information in the second cell according to the first information, if the first terminal device does not detect the Type0-PDCCH of the second cell and / or does not receive the system information of the second cell within a second duration, then send the second information in the second cell again.

62. The terminal device according to claim 61, characterized in that, The second duration is determined based on the timing duration of a second timer.

63. The terminal device according to claim 61 or 62, characterized in that, The start time of the second timer is determined based on the transmission time of the second information.

64. The terminal device according to any one of claims 48 to 63, characterized in that, The terminal device further includes: A stop module, which is used to stop the transmission of the second information if the number of transmissions of the second information is greater than or equal to a first threshold.

65. The terminal device according to any one of claims 48 to 64, characterized in that, The second information is carried on a first resource, and the first resource satisfies one or more of the following: The first resource is a periodic resource; The first resource is associated with one or more SSB indexes; The first resource is associated with the monitoring time instants of one or more Type0-PDCCHs.

66. The terminal device according to claim 65, wherein The first resource is a periodic resource, and the periodic resource satisfies one or more of the following: The starting resource position of the periodic resource is associated with the first radio frame in the periodic radio frame; The period length of the periodic resource is determined based on the number of symbols, the number of time slots, or the number of frames.

67. The terminal device according to claim 66, wherein, The first radio frame includes a radio frame with a system frame number of 0.

68. The terminal device according to any one of claims 65 to 67, characterized in that, The monitoring time instants of the one or more Type0-PDCCHs are associated with the one or more SSB indexes.

69. The terminal device according to any one of claims 48 to 68, characterized in that, The terminal device further includes: A fourth communication module, which is used to receive seventh information from the second cell, and the seventh information is used to determine whether the terminal device needs to monitor the Type0-PDCCH of the second cell.

70. The terminal device according to claim 69, characterized in that, The seventh information is carried in one or more SSBs sent by the second cell.

71. The terminal device according to claim 70, wherein, The seventh information is carried in one or more of the following: The physical broadcast channel demodulation reference signal PBCH DMRS sequence in the one or more SSBs; The PBCH payload in the one or more SSBs; The master information block MIB in the one or more SSBs.

72. The terminal device according to any one of claims 69 to 71, characterized in that, The terminal device further comprises: A monitoring module, configured to, if it is determined based on the seventh information that the terminal device does not need to monitor the Type0-PDCCH of the second cell, not monitor the Type0-PDCCH of the second cell within the current SSB period; and / or, if it is determined based on the seventh information that the terminal device needs to monitor the Type0-PDCCH of the second cell, monitor the Type0-PDCCH of the second cell within the current SSB period.

73. The terminal device according to any one of claims 48 to 72, characterized in that, The system information includes system information block SIB1.

74. The terminal device according to any one of claims 48 to 73, characterized in that, The first information is carried in one or more of the following information of the first cell: SIB1, SIB2, SIB3, SIB4.

75. A network device, characterized in that, Comprises: A first communication module, configured to send first information through a first cell, the first information being used for the terminal device to send second information in a second cell, and the second information being used for the terminal device to request to receive the system information of the second cell.

76. The network device according to claim 75, characterized in that, The first information is used for cell reselection.

77. The network device according to claim 75 or 76, characterized in that, The first information includes one or more of the following information: Third information, used to indicate the frequency corresponding to the second cell; Fourth information, used to send the second information; Fifth information, used to receive the system information of the second cell; Sixth information, used to indicate the cell identifier of the second cell.

78. The network device according to claim 77, wherein, The third information is used to indicate the global synchronization channel number corresponding to the second cell.

79. The network device according to claim 78, characterized in that, The second cell sends a first synchronization signal block SSB on the frequency corresponding to the global synchronization channel number, and the first SSB does not include the fifth information.

80. The network device according to claim 77, wherein The third information is used to indicate a first frequency, and the first frequency does not belong to the frequency corresponding to the global synchronization channel number.

81. The network device according to claim 80, characterized in that, The second cell sends a second SSB on the first frequency, and the second SSB includes the fifth information.

82. The network device according to any one of claims 77 to 81, characterized in that, The fourth information is used to determine a first resource, and the first resource is used to carry the second information.

83. The network device according to claim 82, characterized in that, The first resource is a periodic resource, and the fourth information is used to determine the start resource and / or the period length of the periodic resource.

84. The network device according to any one of claims 77 to 83, characterized in that, The fifth information includes one or more of the following: Configuration information of the search space of the type 0 - physical downlink control channel Type0-PDCCH of the second cell; Configuration information of the control resource set CORESET0 of the second cell.

85. The network device according to any one of claims 75 to 84, characterized in that, The first information is information that cannot be recognized by a second terminal device, and the second terminal device does not support accessing or camping on the second cell.

86. The network device according to any one of claims 75 to 85, characterized in that, The second information is carried on a first resource, and the first resource satisfies one or more of the following: The first resource is a periodic resource; The first resource is associated with one or more SSB indexes; The first resource is associated with the monitoring timing of one or more Type0-PDCCHs.

87. The network device according to claim 86, characterized in that, The first resource is a periodic resource, and the periodic resource satisfies one or more of the following: The starting resource location of the periodic resource is associated with the first radio frame in the periodic radio frame; The period length of the periodic resource is determined based on the number of symbols, the number of time slots, or the number of frames.

88. The network device according to claim 87, characterized in that, The first radio frame includes a radio frame with a system frame number of 0.

89. The network device according to any one of claims 86 to 88, characterized in that, The monitoring occasion of the one or more Type0-PDCCHs is associated with the one or more SSB indexes.

90. The network device according to any one of claims 75 to 89, characterized in that The network device further includes: A second communication module, configured to send seventh information through a second cell, where the seventh information is used to determine whether a terminal device needs to monitor the Type0-PDCCH of the second cell.

91. The network device according to claim 90, wherein The seventh information is carried in one or more SSBs sent by the second cell.

92. The network device according to claim 91, characterized in that, The seventh information is carried in one or more of the following: The physical broadcast channel demodulation reference signal PBCH DMRS sequence in the one or more SSBs; The PBCH payload in the one or more SSBs; The master information block MIB in the one or more SSBs. The network device according to any one of claims 75 to 92, characterized in that, The system information includes system information block SIB1. The network device according to any one of claims 75 to 93, characterized in that, The first information is carried in one or more of the following information of the first cell: SIB1, SIB2, SIB3, SIB4.

95. A terminal device, characterized in that, Comprising a transceiver, a memory, and a processor, where the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send signals, so that the terminal device executes the method according to any one of claims 1 to 27.

96. A network device, characterized in that, Comprising a transceiver, a memory, and a processor, where the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send signals, so that the communication device executes the method according to any one of claims 28 to 47.

97. A device, characterized in that, Comprising a processor, configured to call a program from a memory, so that the device executes the method according to any one of claims 1 to 27 or 28 to 47.

98. A chip, characterized in that, Comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 27 or 28 to 47.

99. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program enables a computer to execute the method according to any one of claims 1 to 27 or 28 to 47.

100. A computer program product, characterized in that, Comprising a program, and the program enables a computer to execute the method according to any one of claims 1 to 27 or 28 to 47.

101. A computer program, characterized in that, The computer program enables a computer to execute the method according to any one of claims 1 to 27 or 28 to 47.

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