Wireless communication method, terminal device, and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device determines a target cell to be accessed during cell selection or reselection, wherein the target cell is a cell under a first network or a second network, and the first network and the second network are networks using different RATs for CN aggregation. Because the target cell selected by the terminal device during cell selection or reselection is a cell under the first network or the second network that uses different RATs for CN aggregation, after accessing the target cell, the terminal device can perform CN aggregation on the basis of the corresponding network.

Description

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

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

[0002] To solve the problem of 6G network coverage, core network (CN) aggregation can be supported in a 6G network, also known as dual steering or 5G+6G aggregation. However, how to implement core network aggregation becomes a problem to be solved.

[0003] SUMMARY

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

[0005] In a first aspect, a method for wireless communication is provided, comprising: determining, by a terminal device, a target cell to be accessed in a cell selection or reselection procedure, wherein the target cell is a cell under a first network or a second network, and the first network and the second network are networks using different radio access technologies (RATs) for CN aggregation.

[0006] In a second aspect, a method for wireless communication is provided, comprising: sending, by a network device, indication information to a terminal device, wherein the indication information is used to indicate CN aggregation, and a network used for the CN aggregation includes a first network and a second network using different RATs, and the first network and the second network are used for determining a target cell to be accessed in a cell selection or reselection procedure.

[0007] In a third aspect, a terminal device is provided, comprising: a processing unit configured to determine a target cell to be accessed in a cell selection or reselection procedure, wherein the target cell is a cell under a first network or a second network, and the first network and the second network are networks using different RATs for CN aggregation.

[0008] In a fourth aspect, a network device is provided, comprising: a transceiver configured to send indication information to a terminal device, wherein the indication information is used to indicate CN aggregation, and a network used for the CN aggregation includes a first network and a second network using different RATs, and the first network and the second network are used for determining a target cell to be accessed in a cell selection or reselection procedure.

[0009] In a fifth aspect, a terminal device is provided, comprising a transceiver, a memory and a processor, the memory is configured to store a program, the processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the terminal device performs the method in the first aspect.

[0010] In a sixth aspect, a network device is provided, comprising a transceiver, a memory and a processor, the memory is configured to store a program, the processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the network device performs the method in the second aspect.

[0011] In a seventh aspect, an apparatus is provided, comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method in any one of the first aspect or the second aspect.

[0012] In an eighth aspect, a chip is provided, comprising a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer readable storage medium is provided, having a program stored thereon, the program causing a computer to perform the method in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program product is provided, comprising a program, the program causing a computer to perform the method in the first aspect or the second aspect.

[0015] In an eleventh aspect, a computer program is provided, the computer program causing a computer to perform the method in the first aspect or the second aspect.

[0016] In the embodiments of the present application, the target cell selected by the terminal device in the process of cell selection or reselection is a cell under the first network or the second network, and the first network and the second network are two networks using different RATs for CN aggregation. In this way, the terminal device can perform CN aggregation based on the corresponding network after accessing the target cell. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is an example of a system architecture of a wireless communication system suitable for the embodiments of the present application.

[0018] FIG. 2 is a flow diagram of a wireless communication method according to the embodiments of the present application.

[0019] FIG. 3 is a flow diagram of a wireless communication method according to the embodiments of the present application.

[0020] FIG. 4 is a schematic diagram of the structure of a terminal device according to the embodiments of the present application.

[0021] FIG. 5 is a structural schematic diagram of a network device according to an embodiment of the present application.

[0022] FIG. 6 is a schematic diagram of an apparatus for communication according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0024] Wireless communication system

[0025] FIG. 1 is an example diagram of a system architecture of a wireless communication system 100 to which embodiments of the present application can be applied. The wireless communication system 100 can include a network device 110 and a terminal device 120. The network device 110 can be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographic area, and can communicate with the terminal device 120 located within the coverage area. The terminal device 120 can access a network, such as a wireless network, through the network device 110. Optionally, the wireless communication system 100 can further include a network controller, a mobile management entity, and other network entities, which are not limited by embodiments of the present application.

[0026] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as a fifth generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), and the like. The technical solutions provided by the present application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system, and the like.

[0027] In the embodiments of the present application, the terminal device can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus. The terminal device in the embodiments of the present application can refer to a device providing voice and / or data connectivity for a user, and can be used to connect people, things and machines, such as handheld devices with wireless connection function, vehicle-mounted devices, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity, which provides sidelink signals between terminal devices in vehicle to everything (V2X) or device to device (D2D), etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and the smart home device communicate with each other without relaying the communication signals through the base station.

[0028] In embodiments of the present application, the network device can be a device for communicating with a terminal device. The network device can be, for example, an access network device or a radio access network device. For example, the network device can be a base station. The base station can broadly cover various names in the following or can be replaced with the following names, for example: Node B (Node B), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, modem, or chip for being disposed in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that assumes a base station function in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network side device in a 6G network, a device that assumes a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0029] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or a drone can be configured to act as a device that communicates with another base station.

[0030] In some deployments, the network device can refer to a CU or a DU; or the network device includes a CU and a DU. The gNB can also include an AAU.

[0031] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on airplanes, balloons and satellites in the air. The scene in which the network device and the terminal device are located is not limited in the embodiments of the present application.

[0032] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform, such as a cloud platform.

[0033] In 5G NR, the dual connectivity technology provides users with higher rates, better coverage and higher reliability. The dual connectivity of NR allows the terminal device to connect to one master node (MN) and one secondary node (SN) at the same time. The MN is usually a 5G base station, responsible for processing the control plane and transmitting part of the user plane data. The SN is also a base station, mainly responsible for providing additional user plane data transmission resources.

[0034] Under the architecture of dual connectivity, the terminal device has the ability to communicate with the MN and the SN at the same time. The MN can process control plane signaling, coordinate the operation of the SN, and be responsible for part of the user plane data transmission. The SN can provide additional user plane data transmission resources to enhance data transmission rate and capacity.

[0035] The MN can decide to offload part of the user plane data to the SN according to the terminal device's capabilities, network load and traffic demand, etc. Data offloading can be done at the packet data convergence protocol (PDCP) layer, or at the radio link control (RLC) layer or medium access control (MAC) layer. The offloaded data can be transmitted to the terminal device through different paths, and the terminal device combines the data from the MN and the SN for processing.

[0036] The MN is responsible for processing the control plane, including the generation and transmission of RRC signaling. The terminal device establishes an RRC connection with the MN, and the MN manages and configures the wireless resources of the terminal device. The SN can have some limited control plane interaction with the terminal device through the MN, but mainly transmits user plane data under the coordination of the MN.

[0037] In dual connectivity of NR, mobility management needs to consider the handover of MN and SN. When the terminal device moves, the MN decides whether to handover according to the measurement report and network policy. If the MN needs to be handed over, the new MN will coordinate with the old MN and SN to ensure the continuity of data transmission. If the SN needs to be handed over, the MN will be responsible for notifying the terminal device and coordinating the handover process of the SN.

[0038] In NR, dual connectivity is mainly the aggregation of the radio access network (RAN) side. In order to further improve network coverage, the aggregation of the core network can be considered, that is, the terminal device can establish connections with two core networks at the same time, for example, two core networks using different radio access technology (RAT) technologies. As an example, connections with a 5G core network (5GC) and a 6G core network (5GC) can be established at the same time.

[0039] In order to support the terminal device to access the correct core network when establishing CN aggregation, the embodiment of the present application provides a wireless communication method. The target cell selected by the terminal device in the cell selection or reselection process is a cell under the first network or the second network, and the first network and the second network are two networks using different RATs for CN aggregation. In this way, the terminal device can perform CN aggregation based on the corresponding network after accessing the target cell.

[0040] The embodiment of the present application will be described in detail below in conjunction with FIG. 2.

[0041] FIG. 2 is a flowchart of a wireless communication method provided by the embodiment of the present application. The method 200 shown in FIG. 2 can be executed by a terminal device or by a terminal device and a network device. The terminal device may, for example, be the terminal device 120 shown in FIG. 1, and the network device may, for example, be the network device 110 shown in FIG. 1.

[0042] Referring to FIG. 2, in step 210, the terminal device determines a target cell to be accessed in a cell selection or reselection process.

[0043] The target cell is a cell under a first network or a second network, the first network and the second network are networks for CN aggregation, and the first network and the second network use different RATs. For example, the first network is a 5G network, and the second network is a 6G network; or the first network is a 6G network, and the second network is a 5G network. Through CN aggregation of the 5G network and the 6G network, the coverage can be improved, the coverage of the 5G network can be compensated, and the communication performance of the terminal device can be improved. Optionally, a public land mobile network (PLMN) of the first network and a PLMN of the second network are the same or different. Since the RATs of the first network and the second network are different, the selection of the cell to be accessed in the embodiments of the present application can also be regarded as the selection of the RAT.

[0044] The target cell generally refers to a cell that is finally determined to be accessed and camped by the terminal device in the cell selection or reselection process, and the cell has better signal quality, more suitable network parameters, and load balancing advantages for the terminal device. In the embodiments of the present application, the target cell needs to be selected from the cells under the first network and the second network for CN aggregation, so that the terminal device can perform CN aggregation based on the corresponding network after accessing the target cell. That is, in the embodiments of the present application, when the terminal device selects the target cell in the cell selection or reselection process, the problem of subsequent CN aggregation needs to be considered, so that the correct core network can be accessed when establishing CN aggregation. Since the target cell selected by the terminal device in the cell selection or reselection process is the first network and the second network for CN aggregation using different RATs, the terminal device can perform CN aggregation based on the correct network after accessing the target cell.

[0045] The embodiments of the present application provide two ways to select the target cell, which are described below in combination with Embodiment 1 and Embodiment 2.

[0046] Embodiment 1

[0047] In some implementations, the terminal device can determine the target cell based on a predetermined condition. That is, the terminal device needs to determine the target cell from the cells under the first network and the second network for CN aggregation when the predetermined condition is met. The target cell can be determined by an access stratum (AS) of the terminal device, or the target cell can be determined by a non-access stratum (NAS) of the terminal device and indicated to the AS by the NAS.

[0048] For example, the predetermined condition comprises that the terminal device enters a deployment area of CN aggregation. The deployment area can be a physical area, such as a coverage area of the first network and the second network, and after the terminal device camps on, selects or connects to the network in the deployment area, it is considered that the terminal device needs to perform CN aggregation, and thus in cell selection or reselection, a target cell to be accessed needs to be determined in a cell under the first network and the second network for CN aggregation.

[0049] For example, the predetermined condition comprises that the terminal device enters a deployment area of CN aggregation. The deployment area can be a physical area, such as a coverage area of the first network and the second network, and after the terminal device camps on, selects or connects to the network in the deployment area, it is considered that the terminal device needs to perform CN aggregation, and thus in cell selection or reselection, a target cell to be accessed needs to be determined in a cell under the first network and the second network for CN aggregation.

[0050] For example, the predetermined condition comprises that the terminal device enters a deployment area of CN aggregation. The deployment area can be a physical area, such as a coverage area of the first network and the second network, and after the terminal device camps on, selects or connects to the network in the deployment area, it is considered that the terminal device needs to perform CN aggregation, and thus in cell selection or reselection, a target cell to be accessed needs to be determined in a cell under the first network and the second network for CN aggregation.

[0051] For example, the predetermined condition comprises that the terminal device enters a deployment area of CN aggregation. The deployment area can be a physical area, such as a coverage area of the first network and the second network, and after the terminal device camps on, selects or connects to the network in the deployment area, it is considered that the terminal device needs to perform CN aggregation, and thus in cell selection or reselection, a target cell to be accessed needs to be determined in a cell under the first network and the second network for CN aggregation.

[0052] For example, the predetermined condition comprises that the terminal device enters a deployment area of CN aggregation. The deployment area can be a physical area, such as a coverage area of the first network and the second network, and after the terminal device camps on, selects or connects to the network in the deployment area, it is considered that the terminal device needs to perform CN aggregation, and thus in cell selection or reselection, a target cell to be accessed needs to be determined in a cell under the first network and the second network for CN aggregation.

[0053] For example, the predetermined condition comprises that the terminal device enters a deployment area of CN aggregation. The deployment area can be a physical area, such as a coverage area of the first network and the second network, and after the terminal device camps on, selects or connects to the network in the deployment area, it is considered that the terminal device needs to perform CN aggregation, and thus in cell selection or reselection, a target cell to be accessed needs to be determined in a cell under the first network and the second network for CN aggregation.

[0054] As an example, it is assumed that the terminal device determines, based on the connection with the first network, that the target cell is a cell under the second network. Wherein, if the first network is a 5G network, the second network is a 6G network, and the terminal device is currently in a 5G connection, such as a radio resource control (RRC) connected state, an RRC inactive state, or an RRC idle state, the terminal device needs to select a cell or a corresponding PLMN under the 6G network when selecting a new cell or a PLMN, instead of a cell or a corresponding PLMN under the 5G network; on the contrary, if the terminal device is currently in a 6G connection, such as an RRC connected state, an RRC inactive state, or an RRC idle state, the terminal device needs to select a cell or a corresponding PLMN under the 5G network when selecting a new cell or a PLMN, instead of a cell or a corresponding PLMN under the 6G network.

[0055] Embodiment 2

[0056] In some embodiments, as shown in FIG. 3, the method 200 can further include step 220 and step 230.

[0057] In step 220, the network device sends the indication information to the terminal device.

[0058] Correspondingly, in step 230, the terminal device receives the indication information.

[0059] The indication information is used to indicate the CN aggregation, or in other words, the set up of the CN aggregation.

[0060] The terminal device can determine the target cell in the process of cell selection or reselection based on the indication information. For example, after receiving the indication information sent by the network device for indicating the terminal device to set up the CN aggregation, the terminal device needs to determine the target cell to be accessed in the cells under the first network and the second network for CN aggregation when selecting or reselecting a cell.

[0061] The network device in step 220 can be an access network device or a core network device. Wherein, the network device is a core network device, and the indication information can be carried in a NAS message, for example; or the network device is an access network device (such as a base station, a CU, a DU, a serving cell, etc.), and the indication information can be carried in an RRC message or a media access control control element (MAC CE), for example. Wherein, the access network device can send the indication information for indicating the CN aggregation to the terminal device in response to the indication of the core network device.

[0062] In some implementations, the indication information is further used to indicate one or more of the following: a RAT corresponding to the target cell; a PLMN corresponding to the target cell; a type of the target cell.

[0063] As an example, the indication information indicates a RAT corresponding to the target cell, if the indication information indicates 5G, the target cell determined by the terminal device in cell selection or reselection should be a 5G cell, if the indication information indicates 6G, the target cell determined by the terminal device in cell selection or reselection should be a 6G cell. As another example, in the case that the first network and the second network correspond to different PLMNs, the indication information can indicate a PLMN corresponding to the first network or the second network, the target cell determined by the terminal device in cell selection or reselection should be a cell under the network corresponding to the PLMN indicated by the indication information. As another example, the indication information can also indicate a type of the target cell, if the indication information indicates that the type of the cell is a CN aggregation cell, the terminal device can determine the target cell in the CN aggregation cell, such as determining the target cell in the list of CN aggregation cells.

[0064] After receiving the indication information indicating CN aggregation, the terminal device will select a target cell in the cells under the two networks using different RATs that require CN aggregation in the cell selection or reselection process. For example, if the terminal device is currently under the first network, the target cell is a cell under the second network; as another example, if the terminal device is currently under the second network, the target cell is a cell under the first network.

[0065] As an example, assuming that the terminal device determines the target cell to be a cell under the second network based on the connection with the first network. Wherein, if the first network is a 5G network and the second network is a 6G network, the terminal device is currently under 5G connection, when selecting a new cell or PLMN, the terminal device needs to select a cell or corresponding PLMN under the 6G network, rather than a cell or corresponding PLMN under the 5G network; on the contrary, the terminal device is currently under 6G connection, when selecting a new cell or PLMN, the terminal device needs to select a cell or corresponding PLMN under the 5G network, rather than a cell or corresponding PLMN under the 6G network.

[0066] The core network determines to establish CN aggregation, can instruct the base station, and the base station instructs the terminal device to select or reselect the new cell with explicit RAT indication, or the core network directly instructs the terminal device to select or reselect the new cell with explicit RAT indication through NAS signaling. The terminal device can select a new RAT according to the current state. For example, if there is a 5G connection currently, add a 6G cell connection, or if there is a 5G connection currently, do not select a 5G cell; for example, if there is a 6G connection currently, add a 5G cell connection, or if there is a 6G connection currently, do not select a 6G cell.

[0067] It should be noted that the first network and the second network adopt different RATs, and the networks adopting different RATs can be networks of different network types, for example, the first network and the second network can be 5G networks and 6G networks. Alternatively, in some scenarios, such as a dual-card terminal device, that is, the terminal device has two user cards (for example, two SIM cards or two USIM cards), if the two user cards belong to different operators, different RATs can also be used, for example, two 5G networks of different operators or two 6G networks of different operators, at this time, the scheme of the embodiment of the application can also be used to perform CN aggregation based on the two networks.

[0068] In addition, in the embodiment of the application, the first network and the second network can share a core network or can not share a core network, but this does not affect the application of the technical scheme of the embodiment of the application.

[0069] The method embodiment of the application is described in detail above in combination with FIGS. 1 to 3, and the device embodiment of the application is described in detail below in combination with FIGS. 4 to 6. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, and therefore, the parts not described in detail can be referred to the method embodiment.

[0070] FIG. 4 is a structural schematic diagram of a terminal device provided by an embodiment of the application. The terminal device 400 shown in FIG. 4 can include a processing unit 410. The processing unit 410 is configured to determine a target cell to be accessed in a cell selection or reselection process, wherein the target cell is a cell under a first network or a second network, and the first network and the second network are networks adopting different RATs for CN aggregation.

[0071] In some implementations, the processing unit 410 is specifically configured to determine the target cell based on a predetermined condition.

[0072] In some embodiments, the predetermined condition comprises one or more of the following: the terminal device enters a deployment area of CN aggregation; and / or, a type of a first cell currently accessed by the terminal device is a CN aggregation cell; and information stored in a user card of the terminal device indicating CN aggregation.

[0073] In some embodiments, the type of the first cell is acquired based on the following manners: information of the type of the first cell carried in a system broadcast message of the first cell; and / or, the first cell belongs to a cell list consisting of CN aggregation cells.

[0074] In some embodiments, the target cell is determined by an AS of the terminal device; or, the target cell is determined by a NAS of the terminal device and indicated to the AS layer by the NAS layer.

[0075] In some embodiments, the terminal device further comprises a transceiver unit 420 configured to: receive indication information, wherein the indication information is used to indicate the CN aggregation.

[0076] In some embodiments, the indication information is carried in: a NAS message sent by a core network device; or, an RRC message sent by an access network device; or, a MAC CE sent by an access network device.

[0077] In some embodiments, the indication information is further used to indicate one or more of the following information: a RAT corresponding to the target cell; a PLMN corresponding to the target cell; and a type of the target cell.

[0078] In some embodiments, if the terminal device is currently under the first network, the target cell is a cell under the second network; if the terminal device is currently under the second network, the target cell is a cell under the first network.

[0079] In some embodiments, the first network is a 5G network and the second network is a 6G network; or, the first network is a 6G network and the second network is a 5G network.

[0080] In some embodiments, the PLMN of the first network and the PLMN of the second network are the same or different.

[0081] It can be understood that the processing unit 410 may, for example, be a processor 610, and the transceiver unit 610 may, for example, be a transceiver 630. In addition, the terminal device 600 optionally further comprises a memory 620, as shown in FIG. 6.

[0082] FIG. 5 is a structural schematic diagram of a network device provided by an embodiment of the present application. The network device 500 shown in FIG. 5 can include a transceiver unit 510. The transceiver unit 510 is configured to send indication information to a terminal device, wherein the indication information is used to indicate CN aggregation, and a network used for the CN aggregation includes a first network and a second network using different RATs, and the first network and the second network are used for determination of a target cell to be accessed in a cell selection or reselection process.

[0083] In some implementations, the network device is a core network device, and the indication information is carried in a NAS message; or the network device is an access network device, and the indication information is carried in an RRC message or a MAC CE.

[0084] In some implementations, the indication information is further used to indicate one or more of the following information: a RAT corresponding to the target cell; a PLMN corresponding to the target cell; and a type of the target cell.

[0085] In some implementations, if the terminal device is currently in the first network, the target cell is a cell in the second network; or if the terminal device is currently in the second network, the target cell is a cell in the first network.

[0086] In some implementations, the first network is a 5G network, and the second network is a 6G network; or the first network is a 6G network, and the second network is a 5G network.

[0087] In some implementations, the PLMN of the first network and the PLMN of the second network are the same or different.

[0088] It can be understood that the transceiver unit 510 can be, for example, a transceiver 630. In addition, the network device 500 can further include a processor 610 and a memory 620, as shown in FIG. 6.

[0089] FIG. 6 is a schematic structural diagram of an apparatus for communication according to an embodiment of the present application. The dashed line shown in FIG. 6 indicates that the unit or module is optional. The apparatus 600 can be used to implement the method described in the above method embodiments. The apparatus 600 can be, for example, a chip, a terminal device, or a network device.

[0090] The apparatus 600 can include one or more processors 610. The processor 610 can support the apparatus 600 to implement the methods described in the foregoing method embodiments. The processor 610 can be a general purpose processor or a dedicated processor. For example, the processor 610 can be a central processing unit (CPU). Alternatively, the processor 610 can also be other general purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or can be any conventional processor.

[0091] The apparatus 600 can also include one or more memories 620. The memory 620 stores a program that can be executed by the processor 610, so that the processor 610 executes the methods described in the foregoing method embodiments. The memory 620 can be independent of the processor 610, or can also be integrated in the processor 610.

[0092] The apparatus 600 can also include a transceiver 630. The processor 610 can communicate with other devices or chips through the transceiver 630. For example, the processor 610 can perform data transceiving with other devices or chips through the transceiver 630.

[0093] Embodiments of the present application also provide a communication system. The communication system includes the terminal device and the network device described above. In some implementations, the system also includes other devices that interact with the terminal device and the network device.

[0094] Embodiments of the present application also provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied to the terminal device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal device or the network device in the various embodiments of the present application.

[0095] Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device or the network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal device or the network device in the various embodiments of the present application.

[0096] The embodiments of the present application further provide a computer program. The computer program can be applied to the terminal device or the network device provided by the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal device or the network device in the embodiments of the present application.

[0097] It should be understood that the terms "system" and "network" can be used interchangeably in the embodiments of the present application. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third", and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0098] In the embodiments of the present application, the "indication" mentioned can be direct indication, or indirect indication, or can be an indication of an associated relationship. For example, A indicates B, which can mean that B can be obtained by A; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0099] In the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0100] In the embodiments of the present application, the term "corresponding" can mean a direct or indirect corresponding relationship between the two, or can mean an associated relationship between the two, or can mean an indication and being indicated, configuration and being configured, and the like.

[0101] In the embodiments of the present application, "predefined" or "preconfigured" can be implemented by pre-saving corresponding codes, tables or other information that can be used to indicate related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner. For example, predefinition can mean definition in a protocol.

[0102] In the embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include an LTE protocol, an NR protocol, and a related protocol applied to a future communication system, and the present application does not limit this.

[0103] The term "and / or" used in the embodiments of the present application only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of existence of A alone, existence of A and B simultaneously, and existence of B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0104] In various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0105] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the device embodiments described above are only schematic, and for example, the division of the units is only a logical function division, and there can be another division way in actual implementation, 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 displayed or discussed coupling or direct coupling or communication connection between each associated object can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0106] The units described as separate components can or can not be physically separate, and the components displayed 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. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0107] In addition, each functional unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0108] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as digital video disc (DVD)) or semiconductor media (such as solid state disk (SSD)) and the like.

[0109] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within 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 of wireless communication, comprising: Comprising: A terminal device determines a target cell to be accessed in a cell selection or reselection procedure, wherein the target cell is a cell under a first network or a second network, and the first network and the second network are networks employing different radio access technologies (RATs) for core network (CN) aggregation.

2. The method of claim 1, wherein, The terminal device determines a target cell to be accessed in a cell selection or reselection procedure, comprising: The terminal device determines the target cell based on a predetermined condition.

3. The method of claim 2, wherein, The predetermined condition comprises one or more of the following: The terminal device enters a deployment area of CN aggregation; The type of a first cell currently accessed by the terminal device is a CN aggregation cell; Information stored in a user card of the terminal device indicates CN aggregation.

4. The method of claim 3, wherein, The type of the first cell is obtained based on the following manners: The first cell carries information about the type of the first cell in a system broadcast message of the first cell; and / or The first cell belongs to a cell list consisting of CN aggregation cells.

5. The method of any one of claims 1 to 4, wherein: The target cell is determined by an access stratum (AS) of the terminal device; or The target cell is determined by a non-access stratum (NAS) of the terminal device and is indicated to the AS by the NAS.

6. The method of claim 1, wherein, The method further comprises: The terminal device receives indication information, wherein the indication information is used to indicate the CN aggregation.

7. The method of claim 6, wherein, The indication information is carried in: A NAS message sent by a core network device; or A radio resource control (RRC) message sent by an access network device; or A medium access control (MAC) control element (CE) sent by an access network device.

8. The method according to claim 6 or 7, characterized in that, The indication information is further used to indicate one or more of the following information: A RAT corresponding to the target cell; A public land mobile network (PLMN) corresponding to the target cell; A type of the target cell.

9. The method of any one of claims 1 to 8, wherein: If the terminal device is currently under the first network, the target cell is a cell under the second network; and If the terminal device is currently under the second network, the target cell is a cell under the first network.

10. The method of any one of claims 1 to 9, wherein: The first network is a 5G network, and the second network is a 6G network; or The first network is a 6G network, and the second network is a 5G network.

11. The method according to any one of claims 1 to 10, characterized in that, The PLMN of the first network and the PLMN of the second network are the same or different.

12. A method of wireless communication, comprising: Comprising: A network device sends indication information to a terminal device, wherein the indication information is used to indicate core network (CN) aggregation, and a network for the CN aggregation comprises a first network and a second network employing different radio access technologies (RATs), and the first network and the second network are used for determining a target cell to be accessed in a cell selection or reselection procedure.

13. The method of claim 12, wherein: The network device is a core network device, and the indication information is carried in a NAS message; or The network device is an access network device, and the indication information is carried in a radio resource control (RRC) message or a medium access control (MAC) control element (CE). The network device is an access network device, and the indication information is carried in a radio resource control (RRC) message or a medium access control (MAC) control element (CE).

14. The method according to claim 12 or 13, characterized in that, The indication information is further used to indicate one or more of the following information: a radio access technology (RAT) corresponding to the target cell; a public land mobile network (PLMN) corresponding to the target cell; a type of the target cell.

15. The method of any one of claims 12-14, wherein: if the terminal device is currently in the first network, the target cell is a cell in the second network; and if the terminal device is currently in the second network, the target cell is a cell in the first network.

16. The method of any one of claims 12-15, wherein: the first network is a 5G network, and the second network is a 6G network; or the first network is a 6G network, and the second network is a 5G network.

17. The method according to any one of claims 12 to 16, characterized in that, PLMNs of the first network and the second network are the same or different.

18. A terminal device, comprising: comprising: a processing unit configured to determine a target cell to be accessed in a cell selection or reselection process, wherein the target cell is a cell in a first network or a second network, and the first network and the second network are networks using different radio access technologies (RATs) for core network (CN) aggregation.

19. The terminal device of claim 18, wherein, The processing unit is specifically configured to: determine the target cell based on a predetermined condition.

20. The terminal device of claim 19, wherein, The predetermined condition includes one or more of the following: the terminal device enters a deployment area of CN aggregation; a type of a first cell currently accessed by the terminal device is a CN aggregation cell; information stored in a user card of the terminal device and used to indicate CN aggregation.

21. The terminal device of claim 20, wherein, The type of the first cell is obtained based on the following manner: information about the type of the first cell is carried in a system broadcast message of the first cell; and / or the first cell belongs to a cell list composed of CN aggregation cells.

22. The terminal device of any one of claims 18-21, wherein: the target cell is determined by an access stratum (AS) of the terminal device; or the target cell is determined by a non-access stratum (NAS) of the terminal device and is indicated to the AS by the NAS.

23. The terminal device of claim 18, wherein, The terminal device further comprises a transceiver configured to: receive indication information, wherein the indication information is used to indicate the CN aggregation.

24. The terminal device of claim 23, wherein, The indication information is carried in: a NAS message sent by a core network device; or a radio resource control (RRC) message sent by an access network device; or a medium access control (MAC) control element (CE) sent by an access network device.

25. The terminal device according to claim 23 or 24, characterized by The indication information is further used to indicate one or more of the following information: a radio access technology (RAT) corresponding to the target cell; a public land mobile network (PLMN) corresponding to the target cell; a type of the target cell.

26. The terminal device of any one of claims 18-25, wherein: if the terminal device is currently in the first network, the target cell is a cell in the second network; and if the terminal device is currently in the second network, the target cell is a cell in the first network. The target cell is a cell under the first network if the terminal device is currently under the second network.

27. The terminal device of any of claims 18-26, wherein The first network is a 5G network and the second network is a 6G network; or The first network is a 6G network and the second network is a 5G network.

28. The terminal device of any one of claims 18-27, wherein, The PLMNs of the first network and the second network are the same or different. 29.A network device for wireless communication, comprising: comprising: The transceiver is configured to send indication information to the terminal device, wherein the indication information is used to indicate core network (CN) aggregation, and the networks used for the CN aggregation include a first network and a second network using different radio access technologies (RATs), and the first network and the second network are used to determine a target cell to be accessed in a cell selection or reselection process.

30. The network device of claim 29, wherein The network device is a core network device, and the indication information is carried in a NAS message; or The network device is an access network device, and the indication information is carried in a radio resource control (RRC) message or a medium access control (MAC) control element (CE).

31. The network device of claim 29 or 30, wherein, The indication information is further used to indicate one or more of the following information: The RAT corresponding to the target cell; The public land mobile network (PLMN) corresponding to the target cell; The type of the target cell.

32. The network device of any of claims 29-31, wherein The target cell is a cell under the first network if the terminal device is currently under the second network. The target cell is a cell under the first network if the terminal device is currently under the second network.

33. The network device of any of claims 29-32, wherein The first network is a 5G network and the second network is a 6G network; or The first network is a 6G network and the second network is a 5G network.

34. The network device according to any of claims 29 to 33, wherein, The PLMNs of the first network and the second network are the same or different.

35. A terminal device, comprising: The apparatus includes a transceiver, a memory, and a processor. The memory is configured to store a program. The processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the terminal device performs the method of any of claims 1-11.

36. A network device, comprising: The apparatus includes a transceiver, a memory, and a processor. The memory is configured to store a program. The processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the network device performs the method of any of claims 12-17.

37. An apparatus comprising: The apparatus includes a processor configured to invoke a program from a memory, so that the apparatus performs the method of any of claims 1-17.

38. A chip, characterized by The apparatus includes a processor configured to invoke a program from a memory, so that the apparatus performs the method of any of claims 1-17.

39. A computer-readable storage medium, characterized in that, The apparatus includes a processor configured to invoke a program from a memory, so that the apparatus performs the method of any of claims 1-17. The apparatus includes a processor configured to invoke a program from a memory, so that the apparatus performs the method of any of claims 1-17.

40. A computer program product, characterised in that, comprising a program causing a computer to execute the method according to any one of claims 1 to 17.

41. A computer program, characterized in that, The computer program causes a computer to execute the method according to any one of claims 1 to 17.

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