Wireless communication method, device, chip, storage medium, and program product

Abstract

The present application provides a wireless communication method, a device, a chip, a storage medium, and a program product. The method comprises: a terminal device sending first information; and the terminal device performing cell reselection on the basis of the first information.

Description

A wireless communication method and device, chip, storage medium, and program product TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of mobile communication technology, and in particular to a wireless communication method and device, chip, storage medium, and program product. BACKGROUND

[0002] In a new radio (NR) system, a base station periodically transmits system information, and the transmission of system information is crucial for idle state user equipment (UE) to access the network. However, the base station cannot predict the number of idle UEs that may need to read the system information. Therefore, some periodically transmitted system information is naturally wasted.

[0003] SUMMARY

[0004] Embodiments of the present application provide a wireless communication method and device, chip, storage medium, and program product.

[0005] The wireless communication method provided by the embodiments of the present application comprises:

[0006] The terminal device transmits first information.

[0007] The terminal device performs cell reselection based on the first information.

[0008] The wireless communication method provided by the embodiments of the present application comprises: a first network device receiving first information.

[0009] The first network device controls the transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, the first cell being a camping cell of a terminal device.

[0010] The terminal device provided by the embodiments of the present application comprises:

[0011] The first communication unit is configured to transmit first information.

[0012] The reselection unit is configured to perform cell reselection based on the first information.

[0013] The first network device provided by the embodiments of the present application comprises:

[0014] The second communication unit is configured to receive first information.

[0015] The control unit is configured to control the transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, the first cell being a camping cell of a terminal device.

[0016] The communication device provided by the embodiments of the present application can be the terminal device in the above scheme or the first network device in the above scheme, and the communication device comprises a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory to execute the wireless communication method.

[0017] The chip provided by the embodiments of the present application is configured to implement the wireless communication method.

[0018] Specifically, the chip comprises a processor configured to invoke and run a computer program from a memory, so that the device installed with the chip executes the wireless communication method.

[0019] The computer readable storage medium provided by the embodiments of the present application is configured to store a computer program, and the computer program causes a computer to execute the wireless communication method.

[0020] The computer program product provided by the embodiments of the present application comprises computer program instructions, and the computer program instructions cause a computer to execute the wireless communication method.

[0021] The computer program provided by the embodiments of the present application, when running on a computer, causes the computer to execute the wireless communication method.

[0022] Through the above technical solution, the terminal device sends first information to the first network device, the first network device controls the sending of the synchronization signals of the plurality of neighboring cells of the first cell based on the first information, and the terminal device performs cell reselection based on the first information, so that when the terminal device has a demand for cell reselection, the sending of the synchronization signals of the plurality of neighboring cells of the first cell is controlled based on the first information, and the energy saving of the network device and the cell reselection of the UE are taken into account. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0024] FIG. 1 is a schematic diagram of an application scenario of the embodiments of the present application;

[0025] FIG. 2 is a state transition diagram of a cell provided by the embodiments of the present application;

[0026] FIG. 3 is an optional diagram of a wake-up mode of a cell provided by the embodiments of the present application;

[0027] FIG. 4 is an optional flow diagram of a wireless communication method provided by the embodiments of the present application;

[0028] FIG. 5 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0029] FIG. 6 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0030] FIG. 7 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0031] FIG. 8 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0032] FIG. 9 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0033] FIG. 10 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0034] FIG. 11 is an optional flow diagram of a wireless communication method according to an embodiment of the present application;

[0035] FIG. 12 is an optional structure diagram of a terminal device according to an embodiment of the present application;

[0036] FIG. 13 is an optional structure diagram of a first network device according to an embodiment of the present application;

[0037] FIG. 14 is an optional structure diagram of a communication device according to an embodiment of the present application;

[0038] FIG. 15 is an optional structure diagram of a chip according to an embodiment of the present application;

[0039] FIG. 16 is an optional structure diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0041] The communication system scenario includes a terrestrial network (TN) and an NTN. Among them, the NTN generally adopts a satellite communication mode to provide communication services to ground users. The NTN system currently includes NR-NTN and IoT-NTN systems, and may further include other NTN systems in the future.

[0042] FIG. 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present application. As shown in FIG. 1, the communication system 100 can include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 over an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0043] It should be understood that the embodiment of the present application is only exemplarily described by taking the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is, the technical solutions of the embodiment of the present application can be applied to various communication systems, for example, a Long Term Evolution (LTE) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), an Internet of Things (IoT) system, a Narrow Band Internet of Things (NB-IoT) system, an enhanced Machine-Type Communications (eMTC) system, a 5G communication system (also referred to as an NR communication system), or a future communication system, etc.

[0044] In the communication system 100 shown in FIG. 1, the network device 120 can be an access network device that communicates with the terminal device 110. The access network device can provide communication coverage for a specific geographic area and can communicate with the terminal device 110 (for example, a UE) located in the coverage area.

[0045] The network device 120 can be an Evolutional Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a radio controller in a Cloud Radio Access Network (CRAN), or a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0046] The terminal device 110 can be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices through a wired or wireless connection.

[0047] For example, the terminal device 110 can refer to an access terminal, a UE, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user equipment. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handset, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved network, etc.

[0048] The terminal device 110 can be used for Device to Device (D2D) communication.

[0049] The wireless communication system 100 can also include a core network device 130 in communication with the base station, which can be a 5G Core (5GC) device, for example, an Access and Mobility Management Function (AMF), for another example, an Authentication Server Function (AUSF), for another example, a User Plane Function (UPF), for another example, a Session Management Function (SMF). Alternatively, the core network device 130 can also be an Evolved Packet Core (EPC) device of an LTE network, for example, a Session Management Function + Core Packet Gateway (SMF + PGW-C) device. It should be understood that the SMF + PGW-C can simultaneously implement the functions that can be implemented by the SMF and the PGW-C. In the process of network evolution, the above-mentioned core network device can also be called other names, or new network entities can be formed by dividing the functions of the core network, which is not limited by the embodiments of the present application.

[0050] The various functional units in the communication system 100 can also establish a connection for communication through a next generation (NG) interface.

[0051] For example, the terminal device establishes an air interface connection with the access network device through the Uu interface, which is used to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access network device, for example, a next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (N3 for short); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (N4 for short); the UPF can interact with the data network to transmit user plane data through the NG interface 6 (N6 for short); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (N11 for short); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

[0052] FIG. 1 exemplarily shows one base station, one core network device and two terminal devices. Optionally, the wireless communication system 100 can include multiple base station devices and each base station can include other numbers of terminal devices within its coverage range, which is not limited in the embodiments of the present application.

[0053] It should be noted that FIG. 1 only schematically shows a system to which the embodiments of the present application are applied in the form of an example, and of course, the method shown in the embodiments of the present application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein is only a description of the associated relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects. It should also be understood that the "indication" mentioned in the embodiments of the present application can be direct indication or indirect indication, and can also represent an associated relationship. For example, A indicates B, which can mean that B can be obtained by A; or it can mean that A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or it can mean that A and B have an associated relationship. It should also be understood that the "corresponding" mentioned in the embodiments of the present application can represent a direct correspondence or an indirect correspondence between the two, or can represent an associated relationship between the two, or can represent an indication and being indicated, configuration and being configured, and the like. It should also be understood that the "predefined" or "predefined rule" mentioned in the embodiments of the present application can be realized by pre-saving the corresponding code, table or other means that can be used to indicate related information in the device (for example, including terminal device and network device), and the specific implementation manner of the present application is not limited. For example, the predefinition can mean the definition in the protocol. It should also be understood that the "protocol" in the embodiments of the present application can mean a standard protocol in the communication field, which can include the LTE protocol, the NR protocol and the related protocol applied to the future communication system, and the present application is not limited thereto.

[0054] In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below, and the following related technologies can be combined with the technical solutions of the embodiments of the present application in any way, which all belong to the protection scope of the embodiments of the present application.

[0055] In the NR system, the base station periodically transmits system information, and the transmission of system information is crucial for idle state UEs to access the network. However, at the same time, the base station cannot predict the number of idle UEs that may need to read the system information. Therefore, some periodically transmitted system information will be naturally wasted. In addition, since the base station must maintain the system information, the base station cannot enter a deep sleep mode to save power. However, if the energy consumption of the base station can be reduced, it will not only be beneficial to the operation of future cellular systems, but also contribute to the ecology. However, if the base station directly omits the system information, it will prevent idle UEs from accessing the cell of the base station, thereby causing the cell to become non-cell defined. Therefore, the method of transmitting system information only when needed effectively performs transmission while considering energy saving.

[0056] A cell can be in different states among the following states: an off state, a basic state, and an active state. The off state allows the cell to shut down most of the hardware, and in the off state, no signal / channel is received or transmitted. In the basic state, the cell periodically transmits a synchronization signal or a discovery signal, and all other signals or channels are transmitted in an on-demand manner, so that the only signal always on is the discovery signal, thereby enabling the network to save energy. The active state means that the cell has normal communication functions, including that the cell will often transmit system information on a signal channel and the like.

[0057] In the 6G system, a cell can have three states shown in FIG. 2: an off state, a basic state, and an active state, and change from one state to another. In order to save network energy, when there is no UE activity, for example, at night or in an office area, the cell can enter the off state. However, when there is UE activity but the activity is not active, the cell can enter the basic state. When there are more active UEs, the cell can change to the active state.

[0058] The basic state can be understood as a low-power mode of the cell, and part of the downlink broadcast channel, for example, system information, can be turned off. However, the cell will continue to transmit a discovery signal / synchronization signal to ensure good network coverage. The off state allows the cell to completely turn off downlink transmission, including the discovery signal / synchronization signal, to enable the network to enter a deeper power saving state.

[0059] In the related art, there is a method for waking up a cell in the off mode, as shown in FIG. 3. A UE wakes up a cell in the off state by sending an on-demand signal (OD signal). However, the wake-up shown in FIG. 3 is for a cell under a base station 301 at the current geographic location of the UE. The cell sends an OD feedback to the UE and sends a synchronization signal (such as SSB) based on the OD signal sent by the UE. Other cells, such as a cell under a base station 302, are not awakened. However, when an idle state UE camps on a cell, how to ensure the mobility of the UE. If the cells around the camped cell are also in the off mode, the UE cannot complete the mobility measurement and cell reselection. In FIG. 3, the base station 301 in the on state can be in the basic state or the active state.

[0060] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related art as an optional solution can be combined with the technical solutions of the embodiments of the present application in any way, and all of them belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0061] The embodiment of the present application provides a wireless communication method, which is applied to a terminal device, as shown in Figure 4, and comprises the following steps:

[0062] S401, the terminal device sends first information;

[0063] S402, the terminal device performs cell reselection based on the first information.

[0064] The embodiment of the present application provides a wireless communication method, which is applied to a first network device, as shown in Figure 5, and comprises the following steps:

[0065] S501, the first network device receives first information;

[0066] S502, the first network device controls transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, wherein the first cell is a camping cell of a terminal device.

[0067] The embodiment of the present application provides a wireless communication method, which is applied to a wireless communication system comprising a terminal device and a first network device, as shown in Figure 6, and comprises the following steps:

[0068] S601, the terminal device sends first information to the first network device;

[0069] S602, the first network device controls transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, wherein the first cell is a camping cell of a terminal device.

[0070] S603, the terminal device performs cell reselection based on the first information.

[0071] The wireless communication method shown in Figure 4, Figure 5 or Figure 6 is further described below.

[0072] When the terminal device determines that the requirement of cell reselection is met during movement, the terminal device sends first information to the first network device. The first network device is a network device corresponding to a first cell in which the terminal device currently camps. The first network device can be a base station corresponding to the first cell.

[0073] In the embodiment of the present application, the first information sent by the terminal device to the first network device can be understood as request information or requirement information.

[0074] In the embodiments of the present application, the terminal device can determine whether it has the need for cell reselection. When the first condition is met, it is determined that the terminal device has the need for cell reselection. The first condition can be related to the signal received by the terminal device in the first cell. In an example, the first condition includes one or more of the following: the quality of the signal received by the terminal device in the first cell is less than a first threshold, and the strength of the signal received by the terminal device in the first cell is less than a second threshold.

[0075] Optionally, the terminal device is in an idle state.

[0076] After the first network device receives the first information, in response to the received first information, the first network device controls the transmission of the synchronization signals of the plurality of neighboring cells of the first cell.

[0077] It can be understood that for one of the plurality of neighboring cells of the first cell, the neighboring cell can correspond to the same network device or a different network device as the first cell.

[0078] For each of the plurality of neighboring cells of the first cell, it can be in a synchronization signal transmission state or a synchronization signal stop transmission state. If one of the neighboring cells is in the synchronization signal transmission state, the transmission of the synchronization signal is maintained based on the control of the first network device. If one of the neighboring cells is in the synchronization signal stop transmission state, the transmission of the synchronization signal is started based on the control of the first network device.

[0079] The synchronization signals transmitted by the neighboring cells of the first cell are used for the terminal device to perform measurements on the neighboring cells, so that the terminal device performs cell reselection based on the measurement results of the neighboring cells of the first cell. In the embodiments of the present application, the first cell can be understood as the camped cell before the terminal device performs the current cell reselection, and the neighboring cells of the first cell can be understood as candidate cells for the terminal device to perform cell reselection, and the terminal device selects a new camped cell, i.e., a second cell, from the plurality of candidate cells based on the measurement results of each of the plurality of candidate cells.

[0080] In the embodiments of the present application, one of the neighboring cells performs transmission of the synchronization signal in the basic state or the active state, i.e., one of the neighboring cells in the basic state or the active state can be considered to be in the synchronization signal transmission state. One of the neighboring cells stops transmission of the synchronization signal in the closed state, i.e., one of the neighboring cells in the closed state can be considered to be in the synchronization signal stop transmission state. In response to the first information, the first network device can control the neighboring cells of the first cell to switch to the basic state or the active state when the neighboring cells of the first cell are in the closed state.

[0081] After the terminal device transmits the first information, the terminal device performs cell reselection based on the first information.

[0082] It can be understood that the terminal device performs neighbor cell measurement, and performs cell reselection based on a result of the neighbor cell measurement, determines a second cell, and camps on the second cell. The first cell and the second cell can be understood as cells in which the terminal device camps before and after cell reselection, and the second cell is a neighbor cell of the first cell.

[0083] In the embodiments of the present application, the terminal device sends first information to the first network device, the first network device controls transmission of synchronization signals of a plurality of neighbor cells of the first cell based on the first information, and the terminal device performs cell reselection based on the first information, so that when the terminal device has a demand for cell reselection, the transmission of the synchronization signals of the plurality of neighbor cells of the first cell is controlled based on the first information, while the energy saving of the network device and the cell reselection of the UE are taken into account.

[0084] In some embodiments, the first information is related to cell reselection, or the first information is used to indicate that the terminal device has a demand for cell reselection, or the first information is used to control transmission of synchronization signals of a plurality of neighbor cells of the first cell, and the first cell is a cell in which the terminal device camps.

[0085] In some embodiments, the terminal device sends first information, including:

[0086] The terminal device sends the first information through a first channel, and the first channel includes a physical random access channel (PRACH) or a physical uplink shared channel (PUSCH).

[0087] Correspondingly, the first network device receives first information, including:

[0088] The first network device receives the first information through a first channel, and the first channel includes a PRACH or a PUSCH.

[0089] It can be understood that the first channel for transmitting the first information can be a PRACH or a PUSCH.

[0090] In some embodiments, the resource of the first channel is a cell common resource or a terminal device dedicated resource.

[0091] The resource of the first channel can be understood as a transmission resource of the first channel or a resource used for transmitting the first channel.

[0092] The resource of the first channel being a cell-common resource can be understood as the resource of the first channel being a cell-level resource, different cells corresponding to different resources, that is, the resource used by the first channel sent by the terminal device camped in the first cell to the first network device is the resource corresponding to the first cell. The first network device can determine the first cell based on the resource of the first channel when the first information is received through the first channel.

[0093] The resource of the first channel being a terminal-device-specific resource can be understood as the resource of the first channel being a terminal-device-level resource, different terminal devices corresponding to different resources, that is, the resource used by the first channel sent by the terminal device camped in the first cell to the first network device is the resource corresponding to the terminal device. The first network device can determine the first identity based on the resource of the first channel when the first information is received through the first channel, and the first identity is the identity of the terminal device.

[0094] Optionally, the first identity is a device ID of the terminal device.

[0095] In the embodiments of the present application, in the case that the resource of the first channel is a terminal-device-specific resource, the first network device can determine the first cell based on the first identity. It can be understood that the identity of the terminal device is included in the terminal device list of the first cell, wherein the identity of each terminal device of all terminal devices camped in the first cell is included in the terminal device list of the first cell.

[0096] In some embodiments, the terminal device sends the first information through the first channel, including that the terminal device sends a message 3 on a PUSCH, and the message 3 contains the first information.

[0097] Correspondingly, the first network device receives the first information through the first channel, including that the first network device receives a message 3 on a PUSCH, and the message 3 contains the first information.

[0098] The message 3 sent by the terminal device on the PUSCH carries the first information. It can be understood that the first information is explicitly sent, and the first network device receives the first information on the PUSCH.

[0099] In an example, the first information contains 1 bit.

[0100] In some embodiments, the terminal device sends the first information through the first channel, including that the terminal device sends a first preamble on a PRACH, and the first preamble is associated with the first information.

[0101] In some embodiments, the first network device receives the first information through the first channel, including that the first network device receives a first preamble on a PRACH, the first preamble being associated with the first information.

[0102] The terminal device sends a first preamble on a PRACH, the first preamble being associated with the first information. It can be understood that the first information is implicitly sent, and the first network device receives the first preamble on the PRACH and determines the first information based on the first preamble.

[0103] In the embodiments of the present application, a PRACH occasion in which the PRACH is sent includes a plurality of preambles, and a first preamble in the plurality of preambles is associated with the first information.

[0104] In some embodiments, the terminal device sends the first information through the first channel, including that the terminal device sends a message 1 on a PRACH, the message 1 containing the first information.

[0105] In some embodiments, the first network device receives the first information through the first channel, including that the first network device receives a message 1 on a PRACH, the message 1 containing the first information.

[0106] The terminal device carries the first information in a message 1 sent on a PRACH. It can be understood that the first information is explicitly sent, and the first network device receives the first information on the PRACH.

[0107] In some embodiments, for the terminal device, the method further includes:

[0108] The terminal device sends a first identifier through the first channel, the first identifier being an identifier of the terminal device.

[0109] Correspondingly, in some embodiments, for the first network device, the method further includes:

[0110] The first network device receives a first identifier through the first channel, the first identifier being an identifier of the terminal device.

[0111] In the embodiments of the present application, the terminal device sends the first information to the first network device, and further provides an identifier of the terminal device to the first network device, and the first network device can determine that the terminal device corresponding to the first identifier is a potential terminal device leaving the first cell.

[0112] In some embodiments, in the case that the resource of the first channel is a cell common resource, the terminal device sends the first identifier to the first network device through the first channel.

[0113] In some embodiments, the terminal device sends the first identifier via the first channel, comprising:

[0114] The terminal device sends PRACH at a first PRACH occasion, the first PRACH occasion being associated with the first identifier.

[0115] Correspondingly, in some embodiments, the first network device receives the first identifier via the first channel, comprising:

[0116] The first network device receives PRACH at a first PRACH occasion, the first PRACH occasion being associated with the first identifier.

[0117] The terminal device sends PRACH at a first PRACH occasion, the first PRACH being associated with the first information. Understandably, the first identifier is implicitly sent, and the first network device receives the PRACH at the first PRACH occasion and determines the first identifier based on the first PRACH occasion.

[0118] Understandably, different PRACH occasions are associated with identifiers of different terminal devices.

[0119] In some embodiments, the terminal device sends the first identifier via the first channel, comprising:

[0120] The terminal device sends a second preamble on PRACH, the second preamble being associated with the first identifier.

[0121] Correspondingly, in some embodiments, the first network device receives the first identifier via the first channel, comprising:

[0122] The first network device receives a second preamble on PRACH, the second preamble being associated with the first identifier.

[0123] The terminal device sends a second preamble on PRACH, the second preamble being associated with the first identifier. Understandably, the first identifier is implicitly sent, and the first network device receives the second preamble on PRACH and determines the first identifier based on the second preamble.

[0124] In the embodiments of the present application, the first preamble and the second preamble are different preambles or the same preamble.

[0125] In a case where the first preamble and the second preamble are the same preamble, a PRACH occasion of the PRACH includes a plurality of preambles, and the plurality of preambles include a plurality of preambles associated with the first information, and different preambles associated with the first information are associated with different identifiers of terminal devices. At this time, the second preamble or the first preamble sent by the PRACH is a preamble associated with the first information and the first identifier. The first network device determines the first information and the first identifier based on the received preamble.

[0126] In the embodiments of the present application, the first identifier can also be included in the message sent on the first channel, such as message 3 sent on PUSCH or message 1 sent on PRACH.

[0127] In some embodiments, the first network device controls transmission of synchronization signals of a plurality of neighboring cells of the first cell based on the first information, including:

[0128] The first network device sends a first message to one or more second network devices, and the first message is used to instruct the second network device to send a synchronization signal. The second network device is a network device corresponding to a neighboring cell of the first cell.

[0129] The neighboring cells of the first cell can include one or more second network devices corresponding to different network devices of the first cell. In a case where the first network device receives the first information, the first network device sends a first message to the one or more second network devices. The second network device receiving the first message controls transmission of synchronization signals of the neighboring cells of the first cell in response to the first message.

[0130] It can be understood that one second network device can correspond to one or more neighboring cells of the first cell.

[0131] In some embodiments, the terminal device performs cell reselection based on the first information in S402, including:

[0132] The terminal device starts to perform neighboring cell measurement after a first time length of the first information, and a result of the neighboring cell measurement is used for cell reselection.

[0133] The terminal device starts to perform neighboring cell measurement by default after a first time length of sending the first information, and a certain time is reserved for the first network device to control the neighboring cells of the first cell to send synchronization signals, so as to avoid a situation where some or all of the neighboring cells do not have synchronization signals in a case where it is determined that there is a cell reselection demand and the neighboring cell measurement is performed, and to avoid waste of measurement power consumption.

[0134] In some embodiments, the terminal device performs cell reselection based on the first information in S402, including:

[0135] The terminal device receives second information, the second information being used for responding to the first information;

[0136] In response to the second information, the terminal device performs a neighbor cell measurement, a result of the neighbor cell measurement being used for cell reselection.

[0137] Correspondingly, for the first network device, the method further includes:

[0138] The first network device sends second information, the second information being used for responding to the first information.

[0139] In a case where the first network device receives the first information, the first network device sends, to the terminal device, second information used for responding to the first information, and the terminal device receives the second information, and determines that the first network device receives the first information, that is, the first network device controls sending of the synchronization signal of the neighbor cell of the first cell.

[0140] As shown in FIG. 7, after S602, the first network device performs S604, the first network device sends, to the terminal device, the second information in response.

[0141] It can be understood that in FIG. 7, the first network device performs S604 after S602, and S602 can be performed simultaneously with S604, or S604 can be performed first and then S602.

[0142] In the embodiment of the application, the second information sent by the first network device can be understood as a request confirmation in response to the first information.

[0143] It can be understood that in the embodiment of the application, the time at which the terminal device starts to perform the neighbor cell measurement can include one of the following: after a first time length of sending the first information; and a time of receiving the second information.

[0144] For the case of after a first time length of sending the first information, no interaction is needed between the terminal device and the first network device, which can reduce the overhead, but there is a case that the neighbor cell of the first cell can not have started to send the synchronization signal, and then an invalid neighbor cell measurement or an incorrect measurement result occurs, resulting in a decline in mobility measurement performance of the terminal device.

[0145] For the case of the time of receiving the second information, the terminal device is determined to start the measurement through interaction between the terminal device and the first network device, and if there is no interaction process, the UE can start to measure in advance, but the neighbor cell in the periphery can not have started to send the synchronization signal, which results in a decline in mobility measurement performance of the UE or invalidity, which affects mobility and wastes the measurement power consumption of the UE.

[0146] In some embodiments, the terminal device receives the second information, including:

[0147] The terminal device receives the second information through a second channel, and the second channel includes a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH).

[0148] Correspondingly, the first network device sends second information, including:

[0149] The first network device sends the second information through a second channel, and the second channel includes a PDSCH or a PDCCH.

[0150] In some embodiments, the PDSCH includes a random access response (RAR) or a message 4. The RAR can be used to respond to a message 1, and the message 4 can be used to respond to a message 3.

[0151] In some embodiments, the resources of the second channel are cell-common resources or terminal-device-specific resources.

[0152] In some embodiments, the terminal device performs a neighbor cell measurement, including:

[0153] The terminal device performs a neighbor cell measurement based on cell reselection information, and the cell reselection information is carried through the second channel or included in a system message of the first cell.

[0154] The cell reselection information includes one or more of the following: a candidate cell list, synchronization signal information corresponding to a candidate cell, and synchronization signal information including one or more of the following: frequency point information, time domain location information, periodicity information, and beam information.

[0155] In the case that the second channel carries the cell reselection information, the terminal device can obtain the cell reselection information from the information carried by the second channel.

[0156] In the case that the system message of the first cell contains the cell reselection information, the terminal device can obtain the cell reselection information from the system message of the first cell.

[0157] In some embodiments, for the terminal device, the method further includes:

[0158] After the terminal device camps on a second cell, the terminal device sends third information, and the third information is used to indicate that the terminal device completes cell reselection, and the second cell is a neighbor cell of the first cell.

[0159] Correspondingly, for the first network device, the method includes:

[0160] The first network device receives third information, the third information being used to indicate that the terminal device completes cell reselection.

[0161] In the embodiments of the present application, after camping on the second cell, the terminal device sends third information to the network device corresponding to the second cell to indicate that the terminal device completes cell reselection. The third information can be alternatively described as handover confirmation indicating that the terminal device completes cell reselection.

[0162] The second cell is a neighboring cell of the first cell, and the second cell and the first cell can correspond to the same network device or different network devices.

[0163] In the case where the second cell and the first cell correspond to the same network device, the terminal device sends the third information to the first network device.

[0164] In the case where the second cell and the first cell correspond to different network devices, the terminal device sends the third information to the third network device.

[0165] In some embodiments, the terminal device sending the third information comprises:

[0166] The terminal device sends the third information through a third channel, and the third channel comprises PRACH or PUSCH.

[0167] In the case where the third channel comprises PRACH, the terminal device sends message 1 through PRACH, and the message 1 contains the third information.

[0168] In the case where the third channel comprises PUSCH, the terminal device sends message 3 through PUSCH, and the message 3 contains the third information.

[0169] In some embodiments, the third information comprises a first identifier.

[0170] In some embodiments, the resource of the third channel is a cell common resource or a terminal device dedicated resource.

[0171] In the case where the resource of the third channel is a cell common resource, the resource of the third channel is a resource corresponding to the second cell.

[0172] In the case where the resource of the third channel is a terminal device dedicated resource, the network device corresponding to the second cell determines the third information based on the resource of the third channel.

[0173] In the case where the second cell and the first cell correspond to the same network device

[0174] In some embodiments, for the first network device, the first network device receiving the third information comprises:

[0175] The first network device receives the third information through a third channel, and the third channel includes a PRACH or a PUSCH.

[0176] In a case where the first cell and the second cell correspond to the same network device, the first cell and the second cell correspond to the first network device, and the terminal device sends third information to the first network device through a third channel, and the first network device receives the third information through the third channel.

[0177] In a case where the first cell and the second cell correspond to the first network device, based on FIG. 6, as shown in FIG. 8, the method further includes: S605, the terminal device sends third information to the first network device.

[0178] In a case where the first network device receives the third information, the first network device can delete the first identifier from a terminal device list of the first cell, and add the first identifier to a terminal device list of the second cell. The terminal device list of the second cell includes identifiers of multiple terminal devices that camp on the second cell.

[0179] In some embodiments, for the first network device, the method further includes:

[0180] The first network device controls transmission of synchronization signals of cells other than the second cell in a plurality of third cells based on the third information; the plurality of third cells include the first cell and one or more neighboring cells of the first cell, and the second cell is a cell to which the terminal device camps after cell reselection.

[0181] The first network device can control the first cell and the neighboring cells of the first cell other than the second cell to stop transmission of synchronization signals.

[0182] The first cell corresponds to the first network device, and the first network device can control the first cell to stop transmission of synchronization signals according to a number of active terminal devices under the first cell.

[0183] The first network device can send the third information to one or more second network devices to indicate that the terminal device completes cell reselection, the second network devices are network devices other than the first network device corresponding to the neighboring cells of the first cell, and the second network devices can control transmission of synchronization signals of the neighboring cells of the first cell according to a number of active terminal devices of the second network devices after receiving the third information sent by the first network device. In a case where the second network device corresponds to one neighboring cell of the first cell, and the neighboring cell has no active terminal device, the second network device can stop transmission of synchronization signals, and here, the second network device can switch the neighboring cell to an off state.

[0184] In the embodiments of the present application, in the case that the first cell and the second cell correspond to the first network device, the terminal device sends third information to the first network device, and in the case that the first network device receives the third information, the first network device can stop sending the synchronization signal of the first cell, and the other network devices corresponding to the neighboring cells of the first cell, i.e., the second network device, send the third information, and the second network device receiving the third information can stop sending the synchronization signal of the corresponding neighboring cell of the first cell based on the received third information; thereby re-entering the closed state after the cell reselection is completed, and obtaining a continuous energy saving effect.

[0185] In the case that the second cell corresponds to a different network device from the first cell

[0186] The first network device receives the third information through a first interface, the first interface is an interface between the first network device and a third network device, the third network device is a network device corresponding to the second cell, and the second cell is a cell in which the terminal device camps after the cell reselection.

[0187] Here, the network device corresponding to the second cell is referred to as the third network device.

[0188] After the terminal device camps in the second cell, the terminal device sends the third information to the third network device, and the third network device sends the third information to the first network device to indicate that the terminal device completes the cell reselection. The interface between the first network device and the third network device is the first interface. It can be understood that the first interface is an interface between network devices.

[0189] Based on FIG. 6, as shown in FIG. 9, it includes: S606, the terminal device sends the third information to the third network device.

[0190] After the third network device receives the third information, the third network device can send the third information only to the first network device, or can send the third information to the network devices corresponding to each of the neighboring cells of the first cell including the first network device.

[0191] In some embodiments, for the first network device, the method further includes: the first network device controls the sending of the synchronization signal of the first cell based on the third information.

[0192] After the third network device receives the third information sent by the terminal device, the third network device controls the sending of the synchronization signal of the cells other than the second cell in the plurality of third cells based on the third information, wherein the plurality of third cells include the first cell and the neighboring cells of the first cell.

[0193] The third network device can send the third information to network devices corresponding to cells other than the second cell in the plurality of third cells, and the network devices corresponding to the cells other than the second cell in the plurality of third cells include the first network device. The network device receiving the third information sent by the third network device controls transmission of a synchronization signal of a neighboring cell of the first cell corresponding to the network device based on the received third information.

[0194] In an example, the first cell is cell 1, and neighboring cells of cell 1 include cell 2 to cell 5, and network devices corresponding to cell 1 to cell 5 are network device 1 to network device 5 respectively. After the terminal device performs cell reselection and camps on cell 3, the terminal device sends the third information to network device 3, and network device 3 sends the third information to each of network device 1, network device 2, network device 4, and network device 5. Network device 1, network device 2, network device 4, and network device 5 control transmission of synchronization signals of cell 1, cell 2, cell 4, and cell 5 respectively based on the received third information. Network device 1, network device 2, network device 4, and network device 5 can control transmission of the synchronization signals of the corresponding cells based on the number of active terminal devices in the corresponding cells.

[0195] In some embodiments, for the first network device, the method further includes:

[0196] The first network device controls transmission of synchronization signals of cells other than the second cell in the plurality of third cells based on the third information; and the plurality of third cells include the first cell and one or more neighboring cells of the first cell.

[0197] After the third network device receives the third information sent by the terminal device, the third network device sends the third information to the first network device, and the first network device controls transmission of synchronization signals of cells other than the second cell in the plurality of third cells based on the received third information.

[0198] In the embodiments of the present application, the first network device controls transmission of synchronization signals of the first cell based on the third information, and the first network device can send the third information to network devices corresponding to cells other than the first cell and the second cell in the plurality of third cells. The network device receiving the third information sent by the first network device controls transmission of synchronization signals of a neighboring cell of the first cell corresponding to the network device based on the received third information.

[0199] In an example, the first cell is cell 1, and the neighboring cells of cell 1 include cell 2 to cell 5, and the network devices corresponding to cell 1 to cell 5 are network device 1 to network device 5 respectively; after the terminal device performs cell reselection and camps on cell 3, the terminal device sends third information to network device 3, network device 3 sends the third information to network device 1, network device 1 controls the sending of the synchronization signal of cell 1, and sends the third information to each of network device 2, network device 4 and network device 5. Network device 2, network device 4 and network device 5 control the sending of the synchronization signal of cell 2, cell 4 and cell 5 respectively based on the received third information. Among them, network device 2, network device 4 and network device 5 can control the sending of the synchronization signal of the corresponding cell based on the number of active terminal devices in the corresponding cell.

[0200] In the following, the wireless communication method provided by the embodiments of the present application is described through multiple embodiments.

[0201] The wireless communication method provided by the embodiments of the present application can simultaneously consider the energy saving of the network and implement the mobility measurement and cell reselection of the UE.

[0202] When a UE in idle state needs to perform cell reselection due to movement, how to complete this process in a 6G system.

[0203] Firstly, the UE needs to determine whether there is a need for cell reselection, which can be determined according to conditions, for example, when the signal energy measured by the UE in the currently camped cell is lower than a threshold, the UE can determine that there is a need for cell reselection.

[0204] If the UE has a need for cell reselection, the UE can send demand information to the network through a first channel. The first channel can be PRACH or PUSCH.

[0205] If the first channel is PRACH, the selected preamble of the UE can be associated with the demand information, for example, there are multiple preambles in a PRACH occasion, and one of the preambles is associated with the UE mobility measurement demand, so that when the network receives this preamble, the network determines that the UE has proposed this demand. Optionally, in some embodiments, the UE needs to inform its UE ID, so that the network can identify the UE that proposes the demand, which can also be associated with the preamble and the UE ID, or the resources of the PRACH occasion and the UE ID. Such a method has certain limitations on resource configuration.

[0206] Optionally, if the first channel is PUSCH, the PUSCH here can include MSG3, the UE can send the requirement information and / or UE ID through the MSG3.

[0207] The benefit of sending the requirement information is that when the camping cell does not receive the request information from the UE, the camping cell can inform the surrounding neighbor cells to keep off, without sending the synchronization signal, so that the surrounding cells can keep deep sleep continuously to obtain the energy saving effect.

[0208] When the base station receives the requirement information from the UE, the base station sends an acknowledgement information to the UE through a second channel, the second channel here can be PDSCH, or PDCCH. The PDSCH here includes RAR, or MSG4. When the UE receives the determination information from the network, the UE can start the operation of mobility measurement. The benefit here is that through the interaction between the UE and the camping cell, the UE determines the time to start the measurement. If there is no interaction process, the UE can start the measurement in advance, but the surrounding neighbor cells can not have started to send the synchronization signal, which results in that the performance of the mobility measurement made by the UE is degraded, or invalid, which affects the mobility and wastes the measurement power consumption of the UE.

[0209] When the UE makes the mobility measurement, the UE measures the neighbor cells according to the cell reselection information. The cell reselection information at least includes: a candidate cell list, and synchronization signal information corresponding to the candidate cell, the synchronization signal information at least includes: synchronization signal frequency point information, synchronization signal time domain position information, period information, and beam information. The UE can obtain the cell reselection information from the second channel, or the UE can obtain the cell reselection information from the system information of the camping cell.

[0210] When the UE completes the mobility measurement, the UE finally selects a suitable new cell to camp on. When the UE completes the camping on the new cell, the UE needs to send a cell selection completion information to the network through a third channel, the UE sends the cell selection completion information to the network in the new camping cell. The third channel can be PRACH, or PUSCH in the new camping cell. The PUSCH includes MSG3. The completion information here can include the UE ID. The benefit here is that the UE sends the completion information to inform the network that the mobility measurement has been completed, and informs the network which cell the UE has moved to, so that the network can decide to stop sending the synchronization signal of other cells, and re-enter the sleep state, so that the continuous energy saving effect can be obtained.

[0211] In Fig. 10, a procedure of UE mobility measurement and cell reselection is simply described. Based on Fig. 9, UE sends a request signal to the current cell, then the current cell sends a request confirmation information to UE, after that, the network opens the synchronization signals of the candidate cells for UE measurement, when UE finishes the measurement and selects a new cell to camp on, UE sends a completion information to the new cell, then the network can determine that UE has finished the cell reselection, and the network can decide to stop sending the synchronization signals of other cells for network energy saving.

[0212] The advantage of network energy saving is more intuitively described in Fig. 11. In Fig. 11(a), UE moves in the current camped cell (cell 1101) and triggers the demand of cell reselection, after UE sends the request and gets the network confirmation; in Fig. 11(b), the network opens the synchronization signal transmission of the surrounding cells (cell 1102 and cell 1103) for UE mobility measurement; when UE finishes the measurement and switches to a new camped cell (cell 1102), the network can choose to close the synchronization signal transmission of other cells and enter the closed mode for network energy saving.

[0213] The preferred embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above described embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all belong to the protection scope of the present application. For example, in the above described specific embodiments, various specific technical features can be combined in any suitable manner without contradiction, in order to avoid unnecessary repetition, the present application does not further describe various possible combination manners. For another example, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, it should also be considered as the disclosed content of the present application. For another example, under the premise of no conflict, each embodiment described in the present application and / or the technical features in each embodiment can be combined with any prior art, and the technical solution obtained after combination should also fall within the protection scope of the present application.

[0214] It should also be understood that the size of the sequence number of the above processes does not mean the order of execution in various method embodiments of the present application, and the execution order of the processes should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink", "uplink" and "sidelink" are used to represent the transmission direction of signals or data, wherein "downlink" is used to represent the first direction of the transmission direction of signals or data from the station to the user equipment of the cell, "uplink" is used to represent the second direction of the transmission direction of signals or data from the user equipment of the cell to the station, and "sidelink" is used to represent the third direction of the transmission direction of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" represents that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is only used to describe the association relationship of the associated objects, and indicates that there can be three relationships. Specifically, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0215] FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 12, the terminal device 1200 includes:

[0216] The first communication unit 1201 is configured to send first information.

[0217] The reselection unit 1202 is configured to perform cell reselection based on the first information.

[0218] In some embodiments, the first information is related to cell reselection, or the first information is used to indicate that the terminal device has a need for cell reselection, or the first information is used to control the transmission of synchronization signals of a plurality of neighboring cells of a first cell, and the first cell is a camping cell of the terminal device.

[0219] In some embodiments, the first communication unit 1201 is further configured to send the first information through a first channel, and the first channel includes a physical random access channel (PRACH) or a physical uplink shared channel (PUSCH).

[0220] In some embodiments, the resource of the first channel is a cell common resource or a UE dedicated resource.

[0221] In some embodiments, the first communication unit 1201 is further configured to send a message 3 on the PUSCH, and the message 3 contains the first information.

[0222] In some embodiments, the first communication unit 1201 is further configured to send a first preamble on the PRACH, and the first preamble is associated with the first information.

[0223] In some embodiments, the first communication unit 1201 is further configured to send a first identity through the first channel, the first identity being an identity of the terminal device.

[0224] In some embodiments, the first communication unit 1201 is further configured to send a PRACH at a first PRACH occasion, the first PRACH occasion being associated with the first identity.

[0225] In some embodiments, the first communication unit 1201 is further configured to send a second preamble on the PRACH, the second preamble being associated with the first identity.

[0226] In some embodiments, the first communication unit 1201 is further configured to receive second information, the second information being used for responding to the first information.

[0227] The reselection unit 1202 is further configured to perform a neighbor cell measurement in response to the second information, a result of the neighbor cell measurement being used for cell reselection.

[0228] In some embodiments, the first communication unit 1201 is further configured to receive the second information through a second channel, the second channel comprising a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH).

[0229] In some embodiments, a resource of the second channel is a cell-common resource or a terminal-device-specific resource.

[0230] In some embodiments, the reselection unit 1202 is further configured to perform the neighbor cell measurement based on cell reselection information, the cell reselection information being carried through the second channel or included in a system message of the first cell.

[0231] In some embodiments, the first communication unit 1201 is further configured to send third information after the terminal device camps on a second cell, the third information being used to indicate that the terminal device completes cell reselection, the second cell being a neighbor cell of the first cell.

[0232] In some embodiments, the first communication unit 1201 is further configured to send the third information through a third channel, the third channel comprising a PRACH or a PUSCH.

[0233] In some embodiments, a resource of the third channel is a cell-common resource or a terminal-device-specific resource.

[0234] The first communication unit in the terminal device can be implemented by a transceiver in the terminal device. The reselection unit in the terminal device can be implemented by a processor in the terminal device.

[0235] Fig. 13 is a schematic diagram of a structure of a first network device according to an embodiment of the present application. As shown in Fig. 13, the first network device 1300 includes:

[0236] a second communication unit 1301, configured to receive first information;

[0237] a control unit 1302, configured to control transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, the first cell being a camping cell of a terminal device.

[0238] In some embodiments, the first information is related to cell reselection, or the first information is used to indicate that the terminal device has a demand for cell reselection, or the first information is used to control transmission of the synchronization signals of the plurality of neighboring cells of the first cell.

[0239] In some embodiments, the second communication unit 1301 is further configured to receive the first information through a first channel, the first channel including a physical random access channel (PRACH) or a physical uplink shared channel (PUSCH).

[0240] In some embodiments, a resource of the first channel is a cell-common resource or a terminal-device-specific resource.

[0241] In some embodiments, the second communication unit 1301 is further configured to receive a message 3 on the PUSCH, the message 3 containing the first information.

[0242] In some embodiments, the second communication unit 1301 is further configured to receive a first preamble on the PRACH, the first preamble being associated with the first information.

[0243] In some embodiments, the second communication unit 1301 is further configured to receive a first identifier through the first channel, the first identifier being an identifier of the terminal device.

[0244] In some embodiments, the second communication unit 1301 is further configured to receive a PRACH at a first PRACH occasion, the first PRACH occasion being associated with the first identifier.

[0245] In some embodiments, the second communication unit 1301 is further configured to receive a second preamble on the PRACH, the second preamble being associated with the first identifier.

[0246] In some embodiments, the second communication unit 1301 is further configured to send a first message to one or more second network devices, the first message being used to instruct the second network devices to transmit synchronization signals, the second network devices being network devices corresponding to neighboring cells of the first cell.

[0247] In some embodiments, the second communication unit 1301 is further configured to send second information, the second information being used for responding to the first information.

[0248] In some embodiments, the second communication unit 1301 is further configured to send the second information through a second channel, the second channel comprising a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH).

[0249] In some embodiments, a resource of the second channel is a cell-common resource or a terminal device-specific resource.

[0250] In some embodiments, the second channel carries cell reselection information, the cell reselection information being used for the terminal device to perform neighbor cell measurement.

[0251] In some embodiments, the second communication unit 1301 is further configured to receive third information, the third information being used for instructing the terminal device to complete cell reselection.

[0252] In some embodiments, the second communication unit 1301 is further configured to receive the third information through a third channel, the third channel comprising a PRACH or a PUSCH.

[0253] In some embodiments, a resource of the third channel is a cell-common resource or a terminal device-specific resource.

[0254] In some embodiments, the control unit 1302 is further configured to control transmission of synchronization signals of cells other than the second cell among a plurality of third cells based on the third information, the plurality of third cells comprising the first cell and one or more neighbor cells of the first cell, the second cell being a cell in which the terminal device camps after performing cell reselection.

[0255] In some embodiments, the second communication unit 1301 is further configured to receive the third information through a first interface, the first interface being an interface between the first network device and a third network device, the third network device being a network device corresponding to the second cell, the second cell being a cell in which the terminal device camps after performing cell reselection.

[0256] In some embodiments, the second communication unit 1301 is further configured to control transmission of synchronization signals of the first cell based on the third information.

[0257] In some embodiments, the control unit 1302 is further configured to control transmission of synchronization signals of cells other than the second cell among a plurality of third cells based on the third information, the plurality of third cells comprising the first cell and one or more neighbor cells of the first cell.

[0258] The first communication unit in the first network device can be implemented by a transceiver in the first network device, and the control unit in the first network device can be implemented by a processor in the first network device.

[0259] Those skilled in the art should understand that the above description of the terminal device or the first network device of the embodiments of the present application can be understood with reference to the description of the wireless communication method of the embodiments of the present application.

[0260] FIG. 14 is a schematic structural diagram of a communication device 1400 provided by the embodiments of the present application. The communication device can be a terminal device or a first network device. The communication device 1400 shown in FIG. 14 includes a processor 1410. The processor 1410 can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0261] Optionally, as shown in FIG. 14, the communication device 1400 can further include a memory 1420. The processor 1410 can call and run a computer program from the memory 1420 to implement the method in the embodiments of the present application.

[0262] The memory 1420 can be a separate device independent of the processor 1410, or can be integrated in the processor 1410.

[0263] Optionally, as shown in FIG. 14, the communication device 1400 can further include a transceiver 1430. The processor 1410 can control the transceiver 1430 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0264] The transceiver 1430 can include a transmitter and a receiver. The transceiver 1430 can further include an antenna, and the number of antennas can be one or more.

[0265] Optionally, the communication device 1400 can be specifically a first network device of the embodiments of the present application, and the communication device 1400 can implement the corresponding processes implemented by the first network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0266] Optionally, the communication device 1400 can be specifically a terminal device of the embodiments of the present application, and the communication device 1400 can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0267] FIG. 15 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1500 shown in FIG. 15 includes a processor 1510, which can invoke and run a computer program from a memory to implement the method according to an embodiment of the present application.

[0268] Optionally, as shown in FIG. 15, the chip 1500 can further include a memory 1520. The processor 1510 can invoke and run a computer program from the memory 1520 to implement the method according to an embodiment of the present application.

[0269] The memory 1520 can be a separate device independent of the processor 1510, or can be integrated in the processor 1510.

[0270] Optionally, the chip 1500 can further include an input interface 1530. The processor 1510 can control the input interface 1530 to communicate with other devices or chips, and specifically, can acquire information or data sent by other devices or chips.

[0271] Optionally, the chip 1500 can further include an output interface 1540. The processor 1510 can control the output interface 1540 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

[0272] Optionally, the chip can be applied to the first network device according to an embodiment of the present application, and can implement the corresponding procedures implemented by the first network device in the methods according to embodiments of the present application. For brevity, details are not described herein.

[0273] Optionally, the chip can be applied to the terminal device according to an embodiment of the present application, and can implement the corresponding procedures implemented by the terminal device in the methods according to embodiments of the present application. For brevity, details are not described herein.

[0274] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system-on-chip, a chip system or a system-on-chip, etc.

[0275] FIG. 16 is a schematic block diagram of a communication system 1600 according to an embodiment of the present application. As shown in FIG. 16, the communication system 1600 includes a terminal device 1610 and a first network device 1620.

[0276] The terminal device 1610 can be used to implement the corresponding functions implemented by the terminal device in the above methods, and the first network device 1620 can be used to implement the corresponding functions implemented by the first network device in the above methods. For brevity, details are not described herein.

[0277] It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip with a processing capability of signals. In the implementation process, each step of the method embodiments described above can be completed by the integrated logic circuit of hardware in the processor or the instructions in the form of software. The processor described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the storage, and the processor reads the information in the storage, and combines the hardware to complete the steps of the above method.

[0278] It is to be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0279] It should be understood that the above-mentioned memory is exemplary but not limiting, for example, the memory in the embodiments of the present application can also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and the like. That is, the memory in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0280] The embodiment of the present application further provides a computer readable storage medium for storing the computer program.

[0281] Optionally, the computer readable storage medium can be applied to the first network device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the first network device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein.

[0282] Optionally, the computer readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein.

[0283] The embodiment of the present application further provides a computer program product comprising computer program instructions.

[0284] Optionally, the computer program product can be applied to the first network device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the first network device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein.

[0285] Optionally, the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein.

[0286] The embodiment of the present application further provides a computer program.

[0287] Optionally, the computer program can be applied to the first network device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the first network device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein.

[0288] Optionally, the computer program can be applied to the terminal device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, details are not described herein.

[0289] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware or in combination of computer software and electronic hardware. Whether the functions are realized in hardware or software mode depends on the specific application and design constraints of the technical solutions. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0290] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0291] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0292] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0293] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0294] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the part of the present application that essentially contributes to the prior art or the part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0295] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for wireless communication, the method comprising: a terminal device transmitting first information; the terminal device performing cell reselection based on the first information.

2. The method of claim 1, wherein, the first information is related to cell reselection, or the first information is used to indicate that the terminal device has a need for cell reselection, or the first information is used to control transmission of synchronization signals of a plurality of neighboring cells of a first cell, the first cell being a camped cell of the terminal device.

3. The method of claim 1 or 2, wherein, the terminal device transmitting first information, comprising: the terminal device transmitting the first information via a first channel, the first channel comprising a physical random access channel (PRACH) or a physical uplink shared channel (PUSCH).

4. The method of claim 2, wherein, resources of the first channel are cell-common resources or UE-dedicated resources.

5. The method of claim 3 or 4, wherein, the terminal device transmitting the first information via a first channel, comprising: the terminal device transmitting a message 3 on a PUSCH, the message 3 containing the first information.

6. The method of claim 3 or 4, wherein, the terminal device transmitting the first information via a first channel, comprising: the terminal device transmitting a first preamble on a PRACH, the first preamble being associated with the first information.

7. The method according to any one of claims 3 to 6, wherein, the method further comprising: the terminal device transmitting a first identity via the first channel, the first identity being an identity of the terminal device.

8. The method of claim 7, wherein, the terminal device transmitting a first identity via the first channel, comprising: the terminal device transmitting a PRACH at a first PRACH occasion, the first PRACH occasion being associated with the first identity.

9. The method of claim 7, wherein, the terminal device transmitting a first identity via the first channel, comprising: the terminal device transmitting a second preamble on a PRACH, the second preamble being associated with the first identity.

10. The method according to any one of claims 1 to 9, wherein, the terminal device performing cell reselection based on the first information, comprising: the terminal device receiving second information, the second information being used in response to the first information; in response to the second information, the terminal device performing a neighbor cell measurement, a result of the neighbor cell measurement being used for cell reselection.

11. The method of claim 10, wherein, the terminal device receiving second information, comprising: the terminal device receiving the second information via a second channel, the second channel comprising a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH).

12. The method of claim 11, wherein, resources of the second channel are cell-common resources or UE-dedicated resources.

13. The method according to any one of claims 10 to 12, wherein, the terminal device performing a neighbor cell measurement, comprising: the terminal device performing a neighbor cell measurement based on cell reselection information, the cell reselection information being carried via the second channel or being contained in a system message of a first cell.

14. The method according to any one of claims 1 to 13, wherein, the method further comprising: after the terminal device camps on a second cell, the terminal device transmitting third information, the third information being used to indicate that the terminal device has completed cell reselection, the second cell being a neighbor cell of the first cell.

15. The method of claim 14, wherein, the terminal device transmitting third information, comprising: the terminal device transmitting the third information via a third channel, the third channel comprising a PRACH or a PUSCH.

16. The method of claim 15, wherein, resources of the third channel are cell-common resources or UE-dedicated resources. 17.A method for wireless communication, the method comprising: a first network device receiving first information; The first network device controls transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, the first cell being a camping cell of the terminal device.

18. The method of claim 17, wherein, The first information is related to cell reselection, or the first information is used to indicate that the terminal device has a demand for cell reselection, or the first information is used to control transmission of synchronization signals of a plurality of neighboring cells of the first cell.

19. The method of claim 17 or 18, wherein, The first network device receives first information, comprising: The first network device receives the first information through a first channel, and the first channel comprises a physical random access channel (PRACH) or a physical uplink shared channel (PUSCH).

20. The method of claim 19, wherein, The resource of the first channel is a cell-common resource or a terminal-device-specific resource.

21. The method of claim 19 or 20, wherein, The first network device receives the first information through a first channel, comprising: The first network device receives a message 3 on the PUSCH, and the message 3 contains the first information.

22. The method of claim 19 or 20, wherein, The first network device receives the first information through a first channel, comprising: The first network device receives a first preamble on the PRACH, and the first preamble is associated with the first information.

23. The method of any one of claims 19 to 22, wherein, The method further comprises: The first network device receives a first identifier through the first channel, and the first identifier is an identifier of the terminal device.

24. The method of claim 23, wherein, The first network device receives a first identifier through the first channel, comprising: The first network device receives a PRACH at a first PRACH occasion, and the first PRACH occasion is associated with the first identifier.

25. The method of claim 23, wherein, The first network device receives a first identifier through the first channel, comprising: The first network device receives a second preamble on the PRACH, and the second preamble is associated with the first identifier.

26. The method of any one of claims 17 to 25, wherein, The first network device controls transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, comprising: The first network device sends a first message to one or more second network devices, and the first message is used to instruct the second network devices to send synchronization signals, the second network devices being network devices corresponding to neighboring cells of the first cell.

27. The method of any one of claims 17 to 26, wherein, The method further comprises: The first network device sends second information in response to the first information.

28. The method of claim 27, wherein, The first network device sends second information, comprising: The first network device sends the second information through a second channel, and the second channel comprises a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH).

29. The method of claim 28, wherein, The resource of the second channel is a cell-common resource or a terminal-device-specific resource.

30. The method of claim 28 or 29, wherein, The second channel carries cell reselection information, and the cell reselection information is used for the terminal device to perform neighboring cell measurement.

31. The method of any one of claims 17 to 30, wherein, The method further comprises: The first network device receives third information, and the third information is used to indicate that the terminal device completes cell reselection.

32. The method of claim 31, wherein, The first network device receives third information, comprising: The first network device receives the third information through a third channel, and the third channel comprises a PRACH or a PUSCH.

33. The method of claim 32, wherein, The resource of the third channel is a cell-common resource or a terminal-device-specific resource.

34. The method of claim 32 or 33, wherein, The method further comprises: The first network device controls transmission of synchronization signals of cells other than the second cell among a plurality of third cells based on the third information; the plurality of third cells include the first cell and one or more neighboring cells of the first cell, and the second cell is a cell in which the terminal device camps after cell reselection.

35. The method of claim 31, wherein, The first network device receives third information, including: The first network device receives the third information through a first interface, the first interface being an interface between the first network device and a third network device, and the third network device being a network device corresponding to the second cell, the second cell being a cell in which the terminal device camps after cell reselection.

36. The method of claim 35, wherein, The method further includes: The first network device controls transmission of synchronization signals of the first cell based on the third information.

37. The method of claim 35, wherein, The method further includes: The first network device controls transmission of synchronization signals of cells other than the second cell among a plurality of third cells based on the third information; the plurality of third cells include the first cell and one or more neighboring cells of the first cell.

38. A terminal device, comprising: a first communication unit configured to transmit first information; a reselection unit configured to perform cell reselection based on the first information.

39. A first network device, comprising: a second communication unit configured to receive first information; a control unit configured to control transmission of synchronization signals of a plurality of neighboring cells of a first cell based on the first information, the first cell being a cell in which a terminal device camps.

40. A communication device comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and run the computer program stored in the memory to perform the method of any one of claims 1 to 16, or perform the method of any one of claims 17 to 37.

41. A chip comprising: a processor configured to invoke and run a computer program from a memory, so that a device in which the chip is installed performs the method of any one of claims 1 to 16, or performs the method of any one of claims 17 to 37.

42. A computer-readable storage medium for storing a computer program, the computer program being configured to run on a computer to perform the method of any one of claims 1 to 16, or perform the method of any one of claims 17 to 37.

43. A computer program product comprising computer program instructions configured to run on a computer to perform the method of any one of claims 1 to 16, or perform the method of any one of claims 17 to 37.

44. A computer program configured to run on a computer to perform the method of any one of claims 1 to 16, or perform the method of any one of claims 17 to 37.

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