Wireless communication method, terminal device and network device

Abstract

This application is a divisional application of CN202180076921.4. A wireless communication method, a terminal device and a network device are provided, the method comprising: the terminal device performs cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device.

Description

[0001] This application is a divisional application of the Chinese application with application number CN202180076921.4, application date March 25, 2021, and invention name “Wireless Communication Method, Terminal Equipment and Network Equipment”. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and specifically to a wireless communication method, terminal equipment, and network equipment. Background Art

[0003] In order to meet the needs of vertical industries in terms of latency, mobility, reliability, location accuracy, etc., network slicing is considered to provide lower latency, more targeted, greater flexibility and higher scalability services for businesses with different needs.

[0004] Due to mobility, the terminal device may perform cell selection or cell reselection. When performing cell selection or cell reselection based on channel quality, the selected or reselected cell may not support the slice required by the terminal device (UE intendedslice), while the cell where the terminal device is currently located may support the slice required by the terminal device. When performing cell selection or reselection based on slices, the terminal device may select a cell that supports the slice required by the terminal device, but at the same time may cause the terminal device to lose coverage. Therefore, how to balance the slice requirements of the terminal device and the coverage of the terminal device is an urgent problem to be solved. Summary of the invention

[0005] The embodiments of the present application provide a wireless communication method, terminal device, and network device, which are conducive to taking into account both the slicing requirements of the terminal device and the coverage range of the terminal device.

[0006] In a first aspect, a method for wireless communication is provided, comprising: a terminal device performs cell selection or cell reselection according to slice information of the terminal device and / or slice information of a network device.

[0007] In a second aspect, a method for wireless communication is provided, comprising: a network device sends indication information to a terminal device, wherein the indication information is used to instruct the terminal device on a manner of performing cell selection or cell reselection.

[0008] In a third aspect, a terminal device is provided for executing the method in the first aspect or its various implementations.

[0009] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0010] In a fourth aspect, a network device is provided for executing the method in the second aspect or its various implementations.

[0011] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0012] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its implementation manners.

[0013] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or its implementation manners.

[0014] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or in each of their implementations.

[0015] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the device executes a method as described in any one of the first to second aspects or their respective implementations.

[0016] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method of any one of the first to second aspects or any of their implementations.

[0017] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above or in each of their implementations.

[0018] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects or in each of their implementations.

[0019] Through the above technical solution, the terminal device performs cell selection or reselection based on the required slice information and the slice information supported by the network device. For example, when the slice information supported by the network device and the slice information required by the terminal device match, the cell selection or reselection is performed based on the cell selection or reselection criteria of the slice, which is conducive to meeting the slice requirements of the terminal device. When the slice information supported by the network device and the slice information required by the terminal device do not match, the cell selection or reselection is performed based on the cell selection or reselection criteria of the channel quality, which is conducive to ensuring that the terminal device does not lose coverage.

[0020] Alternatively, first perform cell selection or reselection based on the first criterion, and if no suitable cell is selected, continue to perform cell selection or reselection based on the first criterion, and select an acceptable cell from the unsuitable cells, which is beneficial to ensure the slicing requirements of the terminal device, or fall back to the second criterion to perform cell selection or reselection, which is beneficial to ensure that the terminal device does not lose coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0022] Figure 2 It is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0023] Figure 3 It is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.

[0024] Figure 4 It is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.

[0025] Figure 5 It is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.

[0026] Figure 6 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0027] Figure 7 It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0028] Figure 8 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0029] Fig. 9 It is a schematic block diagram of a chip provided according to an embodiment of the present application.

[0030] Fig.10 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0033] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0034] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0035] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0036] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0037] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0038] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0039] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0040] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0041] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0042] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0043] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0045] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0046] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0047] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0048] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0049] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0050] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0051] In the embodiments of the present application, "pre-definition" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0052] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0053] 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 following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all 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.

[0054] In order to meet the requirements of vertical industries for latency, mobility, reliability, location accuracy, etc., it is necessary to enhance how to support vertical services in the access network (RAN). One way is to provide lower latency, more targeted, greater flexibility and higher scalability services for multiple services with different requirements based on network slicing. More specifically, slicing on the RAN side allows application providers to participate in the design, deployment and operation of customized RAN to better support the business of application providers.

[0055] Due to mobility, the terminal device may perform cell selection or cell reselection. When performing cell selection or cell reselection based on channel quality, the selected or reselected cell may not support the slice required by the terminal device (UE intendedslice), while the cell where the terminal device is currently located may support the slice required by the terminal device. When performing cell selection or reselection based on slices, the terminal device may select a cell that supports the slice required by the terminal device, but at the same time may cause the terminal device to lose coverage. Therefore, how to balance the slice requirements of the terminal device and the coverage of the terminal device is an urgent problem to be solved.

[0056] Figure 2 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application. The method 200 may be Figure 1 The terminal device in the communication system shown executes, as shown in Figure 2 As shown, the method 200 includes the following contents:

[0057] S210, the terminal device performs cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device.

[0058] In some embodiments of the present application, the slice information of the terminal device includes at least one of the following:

[0059] Whether the terminal device supports slicing;

[0060] Whether the terminal device obtains the slice information required by the terminal device;

[0061] Whether the terminal device obtains the slice information supported by the network device;

[0062] The slice information required by the terminal device.

[0063] It should be understood that the slice information of the above-mentioned terminal device is only an example. In other embodiments, the slice information of the terminal device may also include other slice information related to the terminal device. For example, the slice information of the terminal device may include whether the terminal device has a slicing requirement, such as whether the terminal device needs to support vertical services based on slicing.

[0064] In some embodiments, the slice information required by the terminal device may be obtained by the access layer (Access Stratum, AS) of the terminal device from the non-access layer (Non-Access Stratum, NAS) of the terminal device.

[0065] That is, the AS layer of the terminal device can perform cell selection or cell reselection based on the slice information required by the terminal device and the slice information supported by the network device.

[0066] In some embodiments, the slice information supported by the network device can be obtained by the terminal device from the network device. For example, the terminal device can obtain it through at least one of the following signaling: System Information Block (SIB), dedicated signaling. Optionally, the terminal device can also obtain the slice information supported by the network device from the network device through other signaling, such as NAS signaling. The present application is not limited to this.

[0067] Optionally, the dedicated signaling may include, for example, but is not limited to, Radio Resource Control (RRC) signaling.

[0068] In some embodiments, the slice information required by the terminal device includes at least one of the following:

[0069] A slice identifier corresponding to the slice required by the terminal device (Intended slice);

[0070] The slice group identifier corresponding to the slice required by the terminal device;

[0071] Parameters corresponding to the slice required by the terminal device.

[0072] In some embodiments, the slice identifier corresponding to the slice required by the terminal device may include but is not limited to at least one of the following: slice service type (Slice / Service Type, SST), single-network slice assistance information (Single-Network Slice Selection Assistance Information, S-NSSAI), and slice index (Slice index).

[0073] Optionally, the slice group identifier corresponding to the slice required by the terminal device may include, but is not limited to, a slice group index.

[0074] Optionally, the parameters corresponding to the slice required by the terminal device may include, but are not limited to, access category (AC) parameters.

[0075] In some embodiments of the present application, the slice information of the network device includes at least one of the following:

[0076] Whether the network device supports slicing;

[0077] The slice information supported by the network device.

[0078] In some embodiments, the slice information supported by the network device includes at least one of the following:

[0079] A slice identifier corresponding to a slice supported by the network device;

[0080] A slice group identifier corresponding to the slice supported by the network device;

[0081] Parameters corresponding to the slices supported by the network device;

[0082] The frequency priority corresponding to the slice supported by the network device;

[0083] The cell selection parameters or cell reselection parameters corresponding to the slices supported by the network device.

[0084] Optionally, the slice identifier corresponding to the slice supported by the network device may include but is not limited to at least one of the following: SST, S-NSSAI, slice index.

[0085] Optionally, the slice group identifier corresponding to the slice supported by the network device may include, but is not limited to, a slice group index.

[0086] Optionally, the parameters corresponding to the slices supported by the network device may include, but are not limited to, AC parameters.

[0087] Optionally, the cell selection parameters or cell reselection parameters corresponding to the slices supported by the network device may include, but are not limited to, the cell selection or reselection threshold and / or duration threshold corresponding to the slices.

[0088] It should be understood that the content included in the slice information of the network device described above is only an example. In other embodiments, the slice information of the network device may also include other information related to the slice. For example, the slice information of the network device may include whether the network device supports slice-based cell selection or reselection criteria, or whether the network device allows the terminal device to perform cell selection or reselection based on slice-based cell selection or reselection criteria, etc. The present application is not limited to this.

[0089] Optionally, during the subsequent random access (RACH) process, slice-based RACH parameters may also be configured, including but not limited to selection parameters for slice-based RACH and non-slice RACH, selection parameters for slice-based two-step (2-step) RACH and slice-based four-step (4-step) RACH, selection parameters for non-slice-based 2-step RACH and non-slice-based 2-step RACH (common 2-step RACH), and selection parameters for slice-based 4-step RACH and non-slice-based 4-step RACH (common 4-step RACH).

[0090] It should be understood that in an embodiment of the present application, the terminal device can select a RACH mode based on the above-mentioned RACH parameters. In other embodiments, the terminal device can also determine the target RACH mode according to the instructions of the network device. In this case, the RACH parameters corresponding to the target RACH mode can be configured by the network device, or can also be predefined.

[0091] Optionally, RACH parameters for different slices may be the same or different.

[0092] Optionally, the RACH parameters for the slice include at least one of the following (for selection):

[0093] Preamble received target power (preambleReceivedTargetPower), message A preamble received power (msgA-PreambleReceivedTargetPower), synchronization signal / physical broadcast channel block (synchronizationsignal / physical broadcast channel block, SS / PBCH block, or SSB) RSRP threshold (rsrp-ThresholdSSB), channel state information reference signal (Channel State Information ReferenceSignal, CSI-RS) RSRP threshold (rsrp-ThresholdCSI-RS), msgA SSB RSRP threshold (msgA-RSRP-ThresholdSSB), Supplementary uplink (Supplementary uplink, SUL) SSB RSRP threshold (rsrp-ThresholdSSB-SUL), msgA RSRP threshold (msgA-RSRP-Threshold), message A maximum number of transmissions (msgA-TransMax), candidate beam reference signal list (candidateBeamRSList), random access opportunity list (ra-OccasionList), random access preamble start index (ra-PreambleStartIndex), preamble (preambleTransMax), SS per RACH opportunity The number of B and the number of contention-based preambles for one SSB (ssb-perRACH-OccasionAndCB-PreamblesPerSSBB, the number of contention-based preambles for message A in each shared RO per SSB (msgA-CB-PreamblesPerSSB-PerSharedRO), the number of message A and SSBs in each RO opportunity and the number of contention-based preambles in each SSB msgA-SSB-PerRACH-OccasionAndCB-PreamblesPerSSB, message A physical uplink shared channel (PUSCH) resource group A (msgA-PUSCH-ResourceGroupB msgA-PUSCH-ResourceGroupA), msgA-PUSCH-ResourceGroupB, message A PUSCH resource index (msgA-PUSCH-Resource-Index).

[0094] Optionally, the terminal device may first determine whether the random access is based on a slice or not based on a slice, and then determine whether the RACH is based on a 2-step or a 4-step. Alternatively, the UE may first determine whether the RACH is based on a 2-step or a 4-step, and then determine whether the RACH is based on a slice or not based on a slice.

[0095] Optionally, the terminal device may first determine whether to use slice-based random access or non-slice-based random access, and then determine whether to select UL or SUL. Alternatively, the UE may first determine whether to select UL or SUL, and then determine whether to use slice-based random access or non-slice-based random access. Furthermore, if UL or SUL is selected first, after selecting UL / SUL and determining the slice, the UE determines whether it is based on 2-step RACH or 4-step RACH; or, if UL or SUL is selected first, after selecting UL / SUL and determining whether it is based on 2-step RACH or 4-step RACH, it determines whether it is slice-based random access or non-slice random access.

[0096] Optionally, in some embodiments of the present application, Figure 3 As shown, S210 may include:

[0097] S211, the terminal device determines a target criterion for performing cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device;

[0098] S212, the terminal device performs cell selection or cell reselection according to the target criterion.

[0099] Therefore, in an embodiment of the present application, the terminal device can first determine the target criteria for performing cell selection or cell reselection based on the slice information of the terminal device and / or the slice information of the network device, and further perform cell selection or cell reselection based on the target criteria, which is beneficial to taking into account the slice requirements of the terminal device and the coverage range of the terminal device.

[0100] For the sake of ease of distinction and explanation, the target criteria for performing cell selection or cell reselection will be determined based on the slice information of the terminal device and / or the slice information of the network device, and the cell selection or reselection method for further performing cell selection or cell reselection based on the target criteria will be recorded as method 1.

[0101] In some embodiments, the network device may configure the manner in which the terminal device performs cell selection or reselection. For example, the network device may send a first indication message to the terminal device, wherein the first indication message is used to instruct the terminal device to perform cell selection or cell reselection according to the above-mentioned manner 1.

[0102] That is, the terminal device can perform cell selection or reselection using the above-mentioned method 1 based on the instruction of the network device.

[0103] In other embodiments, the terminal device performs cell selection or reselection based on mode 1, which is determined by the terminal device itself or is predefined. As an example, the terminal device can perform cell selection or reselection based on mode 1 when there is a slicing requirement. As another example, a terminal device supporting slicing services is predefined to perform cell selection or reselection based on mode 1. For example, the cell selection or reselection mode is set to mode 1 in a terminal device supporting slicing services.

[0104] In other words, the aforementioned method 1 may correspond to a specific terminal, for example, a terminal device that supports slicing, or a terminal device that supports a specific service, which requires providing services based on slicing, such as Internet of Things (IOT) services. For example, a UE of a specific version, such as a UE that supports Release 17 (R17) or above. In some embodiments, the terminal device determines a target criterion for performing cell selection or reselection in a first criterion and a second criterion based on the slice information of the terminal device and / or the slice information of the network device.

[0105] Optionally, the first criterion may be a slice-based cell selection or cell reselection criterion. For example, the first criterion may indicate that cell selection or cell reselection is performed based on slice information of the terminal device and / or slice information of the network device.

[0106] It should be understood that the cell selection or cell reselection criterion based on slices may refer to performing cell selection or reselection based on at least slices, but does not mean performing cell selection or reselection based only on slices. For example, when performing cell selection or reselection based on the first criterion, cell selection or reselection may be performed based on slice information of the terminal device and / or slice information of the network device, as well as other information such as channel quality information of the cell.

[0107] Optionally, when performing cell selection or reselection based on the first criterion, the priority of the slice is higher than the priority of the channel quality. For example, a cell that supports the slice information required by the terminal device is preferentially selected, and further, in the cell that supports the slice information required by the terminal device, the cell selection or reselection is performed in combination with the channel quality information of the cell.

[0108] Optionally, when performing cell selection or reselection based on the first criterion, the priority of channel quality is higher than the priority of slices. For example, cells whose channel quality meets certain conditions (for example, greater than a specific threshold) are preferentially selected, and further, cell selection or reselection is performed in combination with the slice information required by the terminal device, for example, a cell whose channel quality meets the conditions and supports the slice information required by the terminal device is selected.

[0109] Optionally, the second criterion is a cell selection or cell reselection criterion that is not based on slices. For example, the second criterion may indicate that cell selection or cell reselection is not performed based on slice information of the terminal device and / or slice information of the network device.

[0110] For example, when performing cell selection or reselection based on the second criterion, cell selection or reselection may be performed based on other information such as channel quality information of the cell instead of slice information of the terminal device and / or slice information of the network device.

[0111] In some embodiments, the second criterion may be an existing cell selection or reselection criterion, or an R16 cell selection or cell reselection criterion, such as an S criterion or an R criterion.

[0112] In some embodiments of the present application, the terminal device determines that the target criterion for performing cell selection or cell reselection is the first criterion when the first condition is met.

[0113] Optionally, in some embodiments, the first condition may include, but is not limited to, at least one of the following:

[0114] The terminal device supports slicing;

[0115] The terminal device obtains the slice information required by the terminal device;

[0116] The slice information required by the terminal device matches the slice information supported by the network device.

[0117] Therefore, in an embodiment of the present application, when the terminal device supports slicing and the slice information required by the terminal device matches the slice information supported by the network device, cell selection or reselection is performed based on the first criterion (i.e., the slice-based cell selection or reselection criterion), which is beneficial to meeting the slicing requirements of the terminal device.

[0118] Optionally, the slice information required by the terminal device and the slice information supported by the network device may match one of the following situations:

[0119] Case 1: The slices supported by the network device include all slices required by the terminal device.

[0120] Optionally, the slices supported by the network device include all slices required by the terminal device, including at least one of the following situations:

[0121] The slice identifiers corresponding to the slices supported by the network device include the slice identifiers corresponding to all the slices required by the terminal device;

[0122] The slice group identifiers corresponding to the slices supported by the network device include the slice group identifiers corresponding to all the slices required by the terminal device;

[0123] The parameters corresponding to the slices supported by the network device include the parameters corresponding to all slices required by the terminal device.

[0124] Case 2: The slices supported by the network device and the slices required by the terminal device are at least partially the same.

[0125] Optionally, the slices supported by the network device and the slices required by the terminal device are at least partially the same, including at least one of the following situations:

[0126] The slice identifier corresponding to the slice supported by the network device and the slice identifier corresponding to the slice required by the terminal device are at least partially identical;

[0127] The slice group identifier corresponding to the slice supported by the network device and the slice group identifier corresponding to the slice required by the terminal device are at least partially identical;

[0128] The parameters corresponding to the slices supported by the network device and the parameters corresponding to the slices required by the terminal device are at least partially the same.

[0129] In other embodiments, the cell selection or reselection performed by the terminal device based on the first criterion is determined according to the scenario or location. For example, the terminal device is located at the edge of different tracking areas (TA) or registration areas (RA). Optionally, different TAs or RAs support different slices. The different slices supported by different TAs or RAs may include at least one of different supported slice identifiers, different frequencies corresponding to the slices, and different priorities of the frequencies corresponding to the slices.

[0130] Optionally, in some embodiments, the method 200 further includes:

[0131] The terminal device determines that a cell that satisfies at least one of the following conditions is a suitable cell and / or performs a normal service on the suitable cell:

[0132] Support slicing;

[0133] Slice information supporting the requirements of the terminal device;

[0134] The slice information required by the terminal device matches the slice information supported by the network device.

[0135] For example, when the terminal device uses the first criterion to perform cell selection or reselection, it can consider the cell that supports the intended slice of the terminal device, or the cell whose supported slice of the network device and the intended slice of the terminal device match is a suitable cell, and further normal service can be performed on the suitable cell.

[0136] Optionally, the normal service may include but is not limited to:

[0137] Services related to the slices required by the terminal device, and services unrelated to the slices required by the terminal device, such as emergency services.

[0138] For example, the terminal device can establish a protocol data unit (PDU) session corresponding to the slice required by the terminal device on the suitable cell, and activate the PDU Session on the user plane, so that the services related to the slice required by the terminal device can be executed based on the PDU session.

[0139] Optionally, in some embodiments, the method 200 further includes:

[0140] The terminal device determines that a cell that satisfies at least one of the following conditions is an acceptable cell and / or performs a limited service on the acceptable cell:

[0141] Support slicing;

[0142] The slice information required by the terminal device is not supported;

[0143] The slice information required by the terminal device does not match the slice information supported by the network device.

[0144] For example, when the terminal device uses the first criterion to perform cell selection or reselection, if the aforementioned suitable group does not exist, it can be considered that the cell that does not support the intended slice of the terminal device, or the cell where the supported slice of the network device and the intended slice of the terminal device do not match is an acceptable cell, and further, limited service can be performed on the acceptable cell.

[0145] Optionally, the limited service may include services that are unrelated to the slice required by the terminal device, such as emergency services.

[0146] Optionally, the terminal device may establish a PDU session corresponding to the slice required by the terminal device on the acceptable cell, but do not activate the PDU Session on the user plane, or the terminal device does not establish a PDU Session corresponding to the slice required by the terminal device on the acceptable cell.

[0147] Optionally, the mismatch between the slice information required by the terminal device and the slice information supported by the network device may be one of the following situations:

[0148] Case 1: The slices supported by the network device do not include any slice required by the terminal device.

[0149] Optionally, the slices supported by the network device do not include any slice required by the terminal device, including at least one of the following situations:

[0150] The slice identifier corresponding to the slice required by the terminal device is completely different from the slice identifier corresponding to the slice supported by the network device;

[0151] The slice group identifier corresponding to the slice required by the terminal device is completely different from the slice group identifier corresponding to the slice supported by the network device;

[0152] The parameters corresponding to the slices required by the terminal device are completely different from the parameters corresponding to the slices supported by the network device.

[0153] Case 2: The slices supported by the network device and the slices required by the terminal device are at least partially different.

[0154] Optionally, the slices supported by the network device and the slices required by the terminal device are at least partially different, which may include at least one of the following situations:

[0155] The slice identifier corresponding to the slice supported by the network device and the slice identifier corresponding to the slice required by the terminal device are at least partially different;

[0156] The slice group identifier corresponding to the slice supported by the network device and the slice group identifier corresponding to the slice required by the terminal device are at least partially different;

[0157] The parameters corresponding to the slices supported by the network device and the parameters corresponding to the slices required by the terminal device are at least partially different.

[0158] In some further embodiments of the present application, the terminal device determines a target criterion for performing cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device, including:

[0159] When the second condition is met, the terminal device determines that the target criterion for performing cell selection or cell reselection is the second criterion.

[0160] Optionally, in some embodiments, the second condition may include, but is not limited to, at least one of the following:

[0161] The terminal device does not support slicing;

[0162] The terminal device fails to obtain the slice information of the terminal device;

[0163] The slice information required by the terminal device does not match the slice information supported by the network device;

[0164] The network device does not support slicing;

[0165] The network device does not support the slice information required by the terminal device.

[0166] Therefore, in an embodiment of the present application, if the terminal device does not support slicing, or the slicing information required by the terminal device does not match the slicing information supported by the network device, the slicing requirement of the terminal device may not be considered in this case. Therefore, cell selection or reselection may be performed based on the second criterion, that is, cell selection or reselection is not performed based on slicing. For example, cell selection or reselection is performed based on existing cell selection or reselection criteria (that is, based on channel quality), which is beneficial to ensure that the terminal device does not lose coverage.

[0167] It should be understood that the method for determining the mismatch between the slice information required by the terminal device and the slice information supported by the network device can be found in the relevant description above, and will not be repeated here for the sake of brevity.

[0168] Optionally, in some embodiments, the method 200 further includes:

[0169] The terminal device determines that a cell that satisfies at least one of the following conditions is a suitable cell and / or performs a normal service on the suitable cell:

[0170] Slicing is not supported;

[0171] The slice information required by the terminal device is not supported;

[0172] The slice information required by the terminal device does not match the slice information supported by the network device.

[0173] For example, when the terminal device uses the second criterion to perform cell selection or reselection, it can consider a cell that does not support the intended slice of the terminal device, or a cell whose supported slice of the network device and the intended slice of the terminal device do not match is a suitable cell, and further normal service can be performed on the suitable cell.

[0174] Optionally, the normal service may include but is not limited to: services that are unrelated to the slice required by the terminal device, such as emergency services.

[0175] Optionally, the terminal device may establish a PDU session corresponding to the slice required by the terminal device on the suitable cell, but activate the PDU session on the user plane, or the terminal device does not establish a PDU session corresponding to the slice required by the terminal device on the suitable cell.

[0176] Optionally, in some other embodiments, the method 200 further includes:

[0177] The terminal device determines that a cell that satisfies at least one of the following conditions is an acceptable cell and / or performs a limited service on the acceptable cell:

[0178] Slicing is not supported;

[0179] The slice information required by the terminal device is not supported;

[0180] The slice information required by the terminal device does not match the slice information supported by the network device.

[0181] For example, when the terminal device uses the second criterion to perform cell selection or reselection, if no suitable cell is selected, it can be considered that the cell does not support the intended slice of the terminal device, or the cell whose supportedslice of the network device and the intended slice of the terminal device do not match is an acceptable cell, and further, limited service can be performed on the acceptable cell.

[0182] Optionally, the limited service may include but is not limited to: services that are unrelated to the slice required by the terminal device, such as emergency services.

[0183] Optionally, the terminal device may establish a PDU session corresponding to the slice required by the terminal device on the acceptable cell, but do not activate the PDU Session on the user plane, or the terminal device does not establish a PDU Session corresponding to the slice required by the terminal device on the acceptable cell.

[0184] In other embodiments of the present application, Figure 4 As shown, the S210 may include:

[0185] S213, the terminal device may perform cell selection or cell reselection according to the first criterion.

[0186] In some embodiments, the first criterion has a higher priority than the second criterion, that is, the terminal device preferentially chooses to perform cell selection or cell reselection according to the first criterion.

[0187] For the convenience of distinction and explanation, in the embodiment of the present application, the method of performing area selection or cell reselection according to the first criterion is recorded as method 2.

[0188] Optionally, in some embodiments, the network device may configure the manner in which the terminal device performs cell selection or reselection. For example, the network device may send a second indication message to the terminal device, wherein the first indication message is used to instruct the terminal device to perform cell selection or cell reselection according to manner 2.

[0189] That is, the terminal device can perform cell selection or reselection using method 2 based on the instruction of the network device.

[0190] In other embodiments, the terminal device performs cell selection or reselection based on mode 2, which is determined by the terminal device itself or is predefined. As an example, the terminal device can perform cell selection or reselection based on mode 2 when there is a slicing requirement. As another example, a terminal device supporting slicing services is predefined to perform cell selection or reselection based on mode 2. For example, the cell selection or reselection mode is set to mode 2 in a terminal device supporting slicing services.

[0191] In other words, the aforementioned method 2 may correspond to a specific terminal, for example, a terminal device that supports slicing, or a terminal device that supports a specific service that needs to provide services based on slicing, such as IOT services. For example, a specific version of UE, such as a UE that supports R17 or above.

[0192] In other embodiments, the cell selection or reselection performed by the terminal device based on mode 2 is determined according to the scenario or location. For example, the terminal device is located at the edge of different TAs or RAs. Optionally, different TAs or RAs support different slices. The different slices supported by different TAs or RAs may include at least one of different supported slice identifiers, different frequencies corresponding to the slices, and different priorities of the frequencies corresponding to the slices.

[0193] Furthermore, if the terminal device fails to select a suitable cell when performing cell selection or cell reselection based on the first criterion, the terminal device may choose to fall back to performing cell selection or cell reselection based on the second criterion, or the terminal device may also select a receivable cell from unsuitable cells.

[0194] For ease of distinction and explanation, the terminal device performs area selection or cell reselection according to the first criterion. If no suitable cell is selected (for example, the cell selection or reselection result satisfies the third condition), it falls back to performing cell selection or cell reselection based on the second criterion, or selects a receivable cell from an unsuitable cell, which is recorded as method 3.

[0195] In some embodiments, whether the terminal device performs cell selection or reselection based on mode 2 or mode 3 may be based on an instruction from a network device.

[0196] In some embodiments, the cell selection or reselection performed by the terminal device based on mode 3 may be based on the instruction of the network device. For example, the terminal device may receive third indication information sent by the network device, and the third indication information is used to instruct the terminal device to fall back to the second criterion to perform cell selection or cell reselection when a suitable cell is not selected according to the first criterion, or to determine a target cell, i.e., an acceptable cell, among unsuitable cells when performing cell selection or cell reselection according to the first criterion.

[0197] In other embodiments, the terminal device performs cell selection or reselection based on mode 3, which is determined by the terminal device itself or is predefined. As an example, the terminal device can perform cell selection or reselection based on mode 3 when there is a slicing requirement. As another example, a terminal device supporting slicing services is predefined to perform cell selection or reselection based on mode 3. For example, the cell selection or reselection mode is set to mode 3 in a terminal device supporting slicing services.

[0198] In other words, the aforementioned method 3 may correspond to a specific terminal, for example, a terminal device that supports slicing, or a terminal device that supports a specific service that needs to provide services based on slicing, such as IOT services. For example, a specific version of UE, such as a UE that supports R17 or above.

[0199] Optionally, in some embodiments of the present application, the first criterion may include at least one of the following cell selection or reselection parameters:

[0200] The first cell selection or reselection threshold and the second cell selection or reselection threshold corresponding to the slices supported by the network device, and the first duration and the second duration corresponding to the slices supported by the network device.

[0201] Optionally, the first cell selection or reselection threshold is greater than the second cell selection or reselection threshold, and the first duration is less than the second duration.

[0202] Optionally, the first cell selection or reselection threshold and / or the first duration may be parameters for the terminal device to select a suitable cell.

[0203] Optionally, the second cell selection or reselection threshold and / or the second duration may be parameters for the terminal device to select an acceptable cell.

[0204] For example, when there is no cell whose channel quality is greater than or equal to the first cell selection or reselection threshold, the terminal device may perform cell selection or reselection based on the second cell selection or reselection threshold, or, when the duration during which the cell's channel quality is less than or equal to the first cell selection or reselection threshold reaches the first duration, the terminal device may perform cell selection or reselection based on the second duration and / or the second cell selection or reselection threshold, etc.

[0205] Optionally, in some other embodiments, the second cell selection or reselection threshold may also be a cell selection or reselection threshold corresponding to the second criterion, or the second cell selection or reselection threshold may also be an independent threshold, that is, not corresponding to the first criterion and the second criterion, or a predefined threshold for selecting an acceptable cell when the terminal device fails to select a suitable cell.

[0206] In some embodiments of the present application, Figure 4 As shown, the S210 further includes:

[0207] S214: When the cell selection or reselection result based on the first criterion satisfies a third condition, perform cell selection or cell reselection according to the second criterion.

[0208] That is, the terminal device may fall back to performing cell selection or cell reselection based on the second criterion if the cell selection or reselection result obtained by performing cell selection or reselection based on the first criterion meets the third condition.

[0209] Optionally, the cell selection or reselection result satisfying the third condition may include at least one of the following situations:

[0210] Condition 3.1: The channel quality of the cell is poor;

[0211] Condition 3.2: The candidate cell determined according to the first criterion does not meet the slicing condition;

[0212] Condition 3.3: The candidate cell determined according to the first criterion does not support the first criterion.

[0213] Optionally, for condition 3.1, the channel quality of the cell may include the channel quality of the serving cell and / or the channel quality of the neighboring cell.

[0214] Optionally, the poor channel quality of the cell may include at least one of the following situations:

[0215] The channel quality of the serving cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device;

[0216] The channel quality of the neighboring cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device;

[0217] The duration during which the channel quality of the serving cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration;

[0218] The duration of the first cell selection or reselection threshold corresponding to the slice of the network device when the channel quality of the neighboring cell is less than or not greater than the first duration is greater than or equal to the first duration.

[0219] For condition 3.2, the candidate cell determined according to the first criterion does not satisfy the slicing condition, which may include at least one of the following:

[0220] The candidate cell determined according to the first criterion does not support slicing;

[0221] The slices supported by the candidate cell determined according to the first criterion do not match the slices required by the terminal device;

[0222] The candidate cell determined according to the first criterion does not support the slice required by the terminal device.

[0223] Optionally, for the specific implementation of the mismatch between the slices supported by the candidate cell and the slices required by the terminal device, please refer to the relevant instructions on the mismatch between the slices supported by the network device and the slices required by the terminal device. For the sake of brevity, it will not be repeated here.

[0224] For example, the slices that the candidate cell does not support the terminal device requirements determined according to the first criterion may be all slices that the candidate cell does not support the terminal device requirements, or at least one slice that the candidate cell does not support the terminal device requirements.

[0225] Optionally, for condition 3.3, the candidate cell determined according to the first criterion not supporting the first criterion may be that the candidate cell does not support the first criterion, or the candidate cell is indicated as not supporting the first criterion.

[0226] For example, in the case where the candidate cell does not support slicing, the candidate cell may be indicated as not supporting the first criterion. Alternatively, in the case where the candidate cell does not support slicing, the candidate cell does not support the first criterion.

[0227] In some embodiments of the present application, when at least one of the above conditions 3.1 to 3.3 is met, the terminal device can fall back to performing cell selection or reselection based on the second criterion.

[0228] In some embodiments, if the channel quality of the cell is poor (ie, condition 3.1 is met), but the candidate cell meets the slicing conditions (ie, condition 3.2 is not met), in this case, the terminal device can fall back to perform cell selection or reselection based on the second criterion.

[0229] For example, if the candidate cell supports slicing, or the candidate cell supports the slice required by the terminal device, or the slice supported by the candidate cell matches the slice required by the terminal device, and the channel quality of the serving cell and / or the neighboring cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device, in this case, the terminal device can fall back to performing cell selection or reselection based on the second criterion.

[0230] For another example, if the candidate cell supports slicing, or the candidate cell supports the slice required by the terminal device, or the slice supported by the candidate cell matches the slice required by the terminal device, and the channel quality of the serving cell and / or the neighboring cell is less than or not greater than the duration of the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration, in this case, the terminal device can fall back to performing cell selection or reselection based on the second criterion.

[0231] In other embodiments, if the candidate cell does not meet the slicing conditions (ie, condition 3.2 is met), but the channel quality of the cell is better (ie, condition 3.1 is not met), in this case, the terminal device can fall back to perform cell selection or reselection based on the second criterion.

[0232] For example, if the candidate cell does not support slicing, or the candidate cell does not support the slice required by the terminal device, or the slice supported by the candidate cell does not match the slice required by the terminal device, but the channel quality of the cell is greater than or equal to the first cell selection or reselection threshold corresponding to the slice of the network device, in this case, the terminal device can fall back to perform cell selection or reselection based on the second criterion.

[0233] For another example, if the candidate cell does not support slicing, or the candidate cell does not support the slice required by the terminal device, or the slice supported by the candidate cell does not match the slice required by the terminal device, the channel quality of the candidate cell is greater than or equal to the duration of the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration, in this case, the terminal device can fall back to performing cell selection or reselection based on the second criterion.

[0234] In some other embodiments, if the channel quality of the cell is better (i.e., condition 3.1 is not met), the candidate cell meets the slicing condition (i.e., condition 3.2 is not met), but the candidate cell does not support the first criterion (i.e., condition 3.3 is met), in this case, the terminal device can fall back to perform cell selection or reselection based on the second criterion.

[0235] For example, if the candidate cell supports slicing, or the candidate cell supports the slice required by the terminal device, or the slice supported by the candidate cell matches the slice required by the terminal device, and the channel quality of the candidate cell is greater than or equal to the first cell selection or reselection threshold corresponding to the slice of the network device, or the channel quality of the candidate cell is greater than or equal to the first cell selection or reselection threshold corresponding to the slice of the network device, and the duration of the channel quality of the candidate cell is greater than or equal to the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration, but the candidate cell does not support the first criterion, in this case, the terminal device can fall back to performing cell selection or reselection based on the second criterion.

[0236] In other embodiments of the present application, Figure 4 As shown, the S210 further includes:

[0237] S215: When the result of cell selection or reselection based on the first criterion satisfies a third condition, determine a target cell for cell selection or reselection from the candidate cells determined according to the first criterion.

[0238] Optionally, in some embodiments, the candidate cells determined according to the first criterion may include all cells measured by the terminal device, or may also include cells that meet some conditions in the first criterion, which is not limited in the present application.

[0239] In some embodiments of the present application, when further performing cell selection or reselection to determine the target cell based on the candidate cell determined by the first criterion, at least one of the channel quality of the candidate cell, the number of beams, the frequency priority, and the slice information of the candidate cell can be referred to.

[0240] In some embodiments, the target cell for cell selection or reselection satisfies at least one of the following conditions:

[0241] The channel quality is higher than the second cell selection or reselection threshold, the channel quality is optimal, the number of beams is the largest, the corresponding frequency priority is the highest, slicing is supported, the slicing information required by the terminal device is supported, and the supported slicing information matches the slicing information required by the terminal device.

[0242] For example, when performing cell selection or reselection according to the first criterion, cell selection or reselection can be first performed according to the first cell selection or reselection threshold corresponding to the slice. When there is no cell with a channel quality greater than or equal to the first cell selection or reselection threshold, cell selection or reselection can be performed according to the second cell selection or reselection threshold.

[0243] As an example, the terminal device may select a cell with the best channel quality from candidate cells whose channel quality is greater than the second cell selection or reselection threshold as the target cell.

[0244] As an example, the terminal device may select a cell whose channel quality among candidate cells is greater than a second cell selection or reselection threshold and which supports the slice required by the terminal device as a target cell.

[0245] For another example, when the channel quality of a cell does not meet the first cell selection or reselection threshold, the terminal device can make a selection based on the combined slice information. For example, among the candidate cells whose channel quality does not meet the first cell selection or reselection threshold, a cell that supports slices, or supports slices required by the terminal device, or a cell whose supported slices match the slices required by the terminal device is selected as the target cell, thereby meeting the slice requirements of the terminal device.

[0246] In some embodiments of the present application, the channel quality of the cell may be a measurement result of the cell, such as reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), channel quality indication (Channel Quantity Indicator, CQI), signal to noise ratio (SNR), etc.

[0247] In other embodiments of the present application, the channel quality of the cell may also be channel quality information obtained by adjusting the measurement result of the cell. For example, the measurement result of the cell may be added with a specific adjustment amount to determine the channel quality information of the cell. Optionally, the specific adjustment amount may be determined based on the slice information of the cell.

[0248] For example, if the cell supports the slice information required by the terminal device, the corresponding adjustment amount may be the first adjustment amount; or, if the cell does not support the slice information required by the terminal device, the corresponding adjustment amount may be the second adjustment amount, wherein the first adjustment amount is greater than the second adjustment amount.

[0249] For example, if the channel quality of the first cell among the candidate cells is X1 and the corresponding adjustment amount is delt1, then the target channel quality of the first cell is X1+delta1, the channel quality of the first cell is X2, and the corresponding adjustment amount is delta2, then the target channel quality of the second cell is X2+delta2, wherein the first cell supports the slicing information of the terminal device cell, and the second cell does not support the slicing information of the terminal device cell, the channel quality X1 of the first cell is lower than the channel quality X2 of the second cell, but delta1 is greater than delta2, if X1+delta1 is greater than X2+delta2, then the second cell can be selected as the target cell, otherwise, the second cell is selected as the target cell.

[0250] The embodiment of the present application fine-tunes the channel quality information of the cell by combining the cell's slice information. Further, when selecting or reselecting the cell in combination with the channel quality information, it is equivalent to considering the slicing requirements of the terminal device and the channel quality of the cell at the same time, which is conducive to meeting the slicing requirements and coverage range of the terminal device.

[0251] Optionally, in some embodiments, the method 200 further includes:

[0252] The terminal device determines that a cell satisfying the fourth condition is a suitable cell and / or performs a standard service on the suitable cell when at least one of the following conditions is satisfied:

[0253] The cell selection or reselection result obtained by performing cell selection or reselection according to the first criterion satisfies the third condition;

[0254] The terminal device performs cell selection or cell reselection using the second criterion;

[0255] The terminal device falls back from the first criterion to the second criterion to perform cell selection or cell reselection.

[0256] It should be understood that the cell that satisfies the fourth condition may include any cell that does not satisfy at least one of the aforementioned conditions 3.1, condition 3.2 and recommendation 3.3, for example, a cell whose channel quality is lower than the first cell selection or reselection threshold, or a cell that does not meet the slicing conditions, or a cell that does not support the first criterion, etc.

[0257] In other words, the cell satisfying the fourth condition may be a cell that, when selected based on the first criterion, does not satisfy at least one condition in the first criterion.

[0258] Optionally, the cell satisfying the fourth condition may include but is not limited to at least one of the following:

[0259] Cells that do not support slicing;

[0260] A cell that does not support the slice information required by the terminal device;

[0261] Supported slice information and slice information required by the terminal device and mismatched cells;

[0262] A cell that meets the slicing conditions, for example, the cell supports slicing, or the cell supports the slicing required by the terminal device, or the slices supported by the cell match the slices of the terminal device cell;

[0263] The cell does not support the first criterion.

[0264] Optionally, the cell that meets the fourth condition may include a cell with good channel quality but not meeting the slicing condition, or a cell with poor channel quality that meets the slicing condition, or a cell with good channel quality that meets the slicing condition but does not support the first criterion, etc.

[0265] Optionally, satisfying the slicing conditions may include supporting slicing, supporting slicing information required by the terminal device, or at least one of the supported slicing information matching the slicing information required by the terminal device.

[0266] Optionally, in some embodiments, if the terminal device uses the first criterion to perform cell selection or reselection, but the cell selection or reselection result satisfies the aforementioned condition 3.2 (that is, the candidate cell determined according to the first criterion does not meet the slicing condition), in this case, the terminal device may consider the cell that does not support the intended slice of the terminal device, or the cell whose supported slice of the network device and the intended slice of the terminal device do not match is a suitable cell, and further normal service may be performed on the suitable cell.

[0267] Optionally, in some embodiments, if the terminal device uses the first criterion to perform cell selection or reselection, when the cell selection or reselection result meets the aforementioned condition 3.2 (that is, the candidate cell determined according to the first criterion does not meet the slicing condition), it chooses to fall back to the second criterion to perform cell selection or reselection. In this case, the terminal device can consider the cell that does not support the intended slice of the terminal device, or the cell whose supported slice of the network device and the intended slice of the terminal device do not match is a suitable cell, and further normal service can be performed on the suitable cell.

[0268] Optionally, in some embodiments, if the terminal device uses the second criterion to perform cell selection or reselection, in this case, the terminal device may consider a cell that does not support the intended slice of the terminal device, or a cell in which the supported slice of the network device and the intended slice of the terminal device do not match is a suitable cell, and further normal service may be performed on the suitable cell.

[0269] In this case, the normal service may include services that are unrelated to the slice required by the terminal device, such as emergency services.

[0270] Optionally, the terminal device may establish a PDU session corresponding to the slice required by the terminal device on the suitable cell, but do not activate the PDU Session on the user plane, or the terminal device does not establish a PDU Session corresponding to the slice required by the terminal device on the suitable cell.

[0271] Optionally, in some embodiments, if the terminal device uses the first criterion to perform cell selection or reselection, and the candidate cell determined according to the first criterion meets the slicing condition, for example, the cell supports slicing, or the cell supports the slicing required by the terminal device, or the slice supported by the cell matches the slice of the terminal device cell, in this case, the terminal device can consider the cell that supports the intended slice of the terminal device, or the cell whose supported slice of the network device matches the intended slice of the terminal device as a suitable cell, and further normal service can be performed on the suitable cell.

[0272] In this case, the normal service may include services related to the slice required by the terminal device and services unrelated to the slice required by the terminal device, such as emergency services.

[0273] Optionally, the terminal device can establish a PDU session corresponding to the slice required by the terminal device on the suitable cell, and activate the PDU session on the user plane.

[0274] Optionally, in some further embodiments, the method further comprises:

[0275] The terminal device determines that a cell satisfying the fourth condition is an acceptable cell and / or performs a restricted service on the acceptable cell when at least one of the following conditions is satisfied:

[0276] The cell selection or reselection result obtained by performing cell selection or reselection according to the first criterion does not meet the third condition;

[0277] The terminal device performs cell selection or cell reselection using the first criterion;

[0278] The terminal device falls back from the first criterion to the second criterion to perform cell selection or cell reselection.

[0279] Optionally, the cell selection or reselection result obtained by performing cell selection or reselection according to the first criterion not satisfying the third condition may include at least one of the following:

[0280] The channel quality of the cell is better, for example, the channel quality of the cell is greater than the first cell selection or reselection threshold;

[0281] The cell meets the slicing conditions, for example, the cell supports slicing, or the cell supports the slicing required by the terminal device, or the slicing supported by the cell matches the slicing of the terminal device cell;

[0282] The cell does not meet the slicing conditions, for example, the cell does not support slicing, or the cell does not support the slicing required by the terminal device, or the slicing supported by the cell does not match the slicing of the terminal device cell;

[0283] The cell supports the first criterion.

[0284] Optionally, in some embodiments, if the terminal device performs cell selection or reselection according to the first criterion, or when the cell selection or reselection result according to the first criterion does not meet condition 3.2 (that is, the candidate cell determined according to the first criterion meets the slicing condition), the terminal device may consider that the cell that does not support the intended slice of the terminal device, or the cell whose supported slice of the network device and the intended slice of the terminal device do not match is an acceptable cell, and further limited service may be performed on the acceptable cell.

[0285] Optionally, in some embodiments, if the terminal device performs cell selection or reselection according to the first criterion, or if the result of the cell selection or reselection according to the first criterion satisfies condition 3.2 (i.e., the candidate cell determined according to the first criterion does not meet the slicing condition), the terminal device falls back to the second criterion to perform cell selection or reselection, in this case, the terminal device may consider the cell that does not support the intended slice of the terminal device, or the cell whose supported slice of the network device and the intended slice of the terminal device do not match is an acceptable cell, and further limited service may be performed on the acceptable cell.

[0286] Optionally, the limited service may include services that are unrelated to the slice required by the terminal device, such as emergency services.

[0287] Optionally, the terminal device may establish a PDU session corresponding to the slice required by the terminal device on the acceptable cell, but do not activate the PDU Session on the user plane, or the terminal device does not establish a PDU Session corresponding to the slice required by the terminal device on the acceptable cell.

[0288] Optionally, in some embodiments, if the terminal device uses the first criterion to perform cell selection or reselection, and the candidate cell determined according to the first criterion meets the slicing condition, for example, the cell supports slicing, or the cell supports the slicing required by the terminal device, or the slice supported by the cell matches the slice of the terminal device cell, but the channel quality of the candidate cell is less than the first cell selection or reselection threshold, or the duration for which the channel quality of the candidate cell is less than the first cell selection or reselection threshold is greater than the first duration, in this case, the terminal device can consider the cell that supports the intended slice of the terminal device, or the cell whose supported slice of the network device matches the intended slice of the terminal device as an acceptable cell, and further can perform limited service on the acceptable cell.

[0289] In this case, the limited service may include services related to the slice required by the terminal device and services unrelated to the slice required by the terminal device, such as emergency services.

[0290] Optionally, the terminal device can establish a PDU session corresponding to the slice required by the terminal device on the acceptable cell, and activate the PDU session on the user plane.

[0291] In summary, the terminal device performs cell selection or reselection based on the required slice information and the slice information supported by the network device. For example, when the slice information supported by the network device and the slice information required by the terminal device match, the cell selection or reselection is performed based on the cell selection or reselection criteria of the slice, which is conducive to meeting the slice requirements of the terminal device. When the slice information supported by the network device and the slice information required by the terminal device do not match, the cell selection or reselection is performed based on the cell selection or reselection criteria of the channel quality, which is conducive to ensuring that the terminal device does not lose coverage.

[0292] Alternatively, cell selection or reselection is first performed based on the first criterion, and if no suitable cell is selected, cell selection or reselection is performed according to the second criterion, which is beneficial to ensure that the terminal device does not lose coverage. Alternatively, cell selection or reselection continues to be performed based on the first criterion, and an acceptable cell is selected from unsuitable cells, which is beneficial to take into account the slicing requirements and coverage of the terminal device.

[0293] Combination of the above Figures 2 to 4 , describes in detail the wireless communication method according to the embodiment of the present application from the perspective of the terminal device, and the following is combined with Figure 5, a method for wireless communication according to another embodiment of the present application is described in detail from the perspective of a network device. It should be understood that the description on the network device side corresponds to the description on the terminal device side, and similar descriptions can be found above. To avoid repetition, they will not be repeated here.

[0294] Figure 5 is a schematic flow chart of a wireless communication method 300 according to another embodiment of the present application. The method 300 may be Figure 1 The network device in the communication system shown performs, as shown in Figure 5 As shown, the method 300 includes the following contents:

[0295] S310, the network device sends indication information to the terminal device, where the indication information is used to instruct the terminal device on a method of performing cell selection or cell reselection.

[0296] In some embodiments of the present application, the indication information includes first indication information, and the first indication information is used to instruct the terminal device to determine a target criterion for performing cell selection or cell reselection based on the slice information of the terminal device and / or the slice information of the network device, and perform cell selection or cell reselection according to the target criterion.

[0297] In some embodiments of the present application, the indication information includes second indication information, and the second indication information is used to instruct the terminal device to perform cell selection or cell reselection according to a first criterion, and the first criterion may indicate that the cell selection or cell reselection is performed based on the slice information of the terminal device and / or the slice information of the network device.

[0298] In some embodiments of the present application, the indication information includes third indication information, and the third indication information is used to instruct the terminal device to fall back to performing cell selection or cell reselection according to the second criterion when the cell selection or cell reselection result obtained by performing cell selection or cell reselection according to the first criterion meets the third condition, or to determine the target cell according to the result of performing the cell selection or cell reselection based on the first criterion.

[0299] In some embodiments of the present application, the indication information is sent via at least one of the following signaling: system information, dedicated signaling.

[0300] It should be understood that the first indication information, the second indication information and the third indication information in the method 300 correspond to the first indication information, the second indication information and the third indication information in the method 200 respectively. The specific implementation method refers to the relevant implementation in the method 200. For the sake of brevity, it will not be repeated here.

[0301] Combination of the above Figures 2 to 5 , describes in detail the method embodiment of the present application, and the following is combined with Figures 6 to 10 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0302] Figure 6 FIG. 4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Figure 6 As shown, the terminal device 400 includes:

[0303] The processing unit 410 is used to perform cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device.

[0304] In some embodiments of the present application, the slice information of the terminal device includes at least one of the following:

[0305] Whether the terminal device supports slicing;

[0306] Whether the terminal device obtains the slice information required by the terminal device;

[0307] Whether the terminal device obtains the slice information supported by the network device;

[0308] The slice information required by the terminal device.

[0309] In some embodiments of the present application, the slice information required by the terminal device includes at least one of the following:

[0310] A slice identifier corresponding to the slice required by the terminal device;

[0311] The slice group identifier corresponding to the slice required by the terminal device;

[0312] Parameters corresponding to the slice required by the terminal device.

[0313] In some embodiments of the present application, the slice information of the network device includes at least one of the following:

[0314] Whether the network device supports slicing;

[0315] The slice information supported by the network device.

[0316] In some embodiments of the present application, the slice information supported by the network device includes at least one of the following:

[0317] A slice identifier corresponding to the slice supported by the network device;

[0318] A slice group identifier corresponding to the slice supported by the network device;

[0319] Parameters corresponding to the slices supported by the network device;

[0320] The frequency priority corresponding to the slice supported by the network device;

[0321] The cell selection parameters or cell reselection parameters corresponding to the slices supported by the network device.

[0322] In some embodiments of the present application, the processing unit 410 is further configured to:

[0323] Determine a target criterion for performing cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device;

[0324] Cell selection or cell reselection is performed according to the target criterion.

[0325] In some embodiments of the present application, the processing unit 410 is further configured to:

[0326] When the first condition is met, the target criterion for performing cell selection or cell reselection is determined to be the first criterion, wherein the first criterion is used to indicate that cell selection or cell reselection is performed based on slice information of the terminal device and / or slice information of the network device.

[0327] In some embodiments of the present application, the first condition includes at least one of the following:

[0328] The terminal device supports slicing;

[0329] The terminal device obtains the slice information required by the terminal device;

[0330] The slice information required by the terminal device matches the slice information supported by the network device.

[0331] In some embodiments of the present application, the processing unit 410 is further configured to:

[0332] Determine a cell that satisfies at least one of the following conditions as a suitable cell and / or perform a standard service on the suitable cell:

[0333] Slice information supporting the requirements of the terminal device;

[0334] The slice information required by the terminal device matches the slice information supported by the network device.

[0335] In some embodiments of the present application, the processing unit 410 is further configured to:

[0336] In a case where at least one of the following conditions is met, determining a cell that meets the fourth condition as a suitable cell and / or performing a standard service on the suitable cell:

[0337] The cell selection or reselection result obtained by performing cell selection or reselection according to the first criterion satisfies the third condition;

[0338] The terminal device performs cell selection or cell reselection using the second criterion;

[0339] The terminal device falls back from the first criterion to the second criterion to perform cell selection or cell reselection.

[0340] In some embodiments of the present application, the processing unit 410 is further configured to:

[0341] In the case where at least one of the following conditions is met, determining a cell that meets the fourth condition as an acceptable cell and / or performing a restricted service on the acceptable cell:

[0342] The cell selection or reselection result obtained by performing cell selection or reselection according to the first criterion does not meet the third condition;

[0343] The terminal device performs cell selection or cell reselection using the first criterion;

[0344] The terminal device falls back from the first criterion to the second criterion to perform cell selection or cell reselection.

[0345] In some embodiments of the present application, the cell satisfying the fourth condition includes at least one of the following:

[0346] The cell does not support slicing;

[0347] The cell does not support the slice information required by the terminal device;

[0348] The slice information required by the terminal device does not match the slice information supported by the cell;

[0349] The cell supports the first criterion.

[0350] In some embodiments of the present application, the terminal device 400 further includes:

[0351] A communication unit, used to receive first indication information sent by a network device, wherein the first indication information is used to instruct the terminal device to determine a target criterion for performing cell selection or cell reselection based on the slice information of the terminal device and / or the slice information of the network device, and perform cell selection or cell reselection according to the target criterion.

[0352] In some embodiments of the present application, the processing unit 410 is further configured to:

[0353] According to a first criterion, cell selection or cell reselection is performed, wherein the first criterion is used to indicate that cell selection or cell reselection is performed based on slice information of the terminal device and / or slice information of the network device.

[0354] In some embodiments of the present application, the processing unit 410 is further configured to:

[0355] In a case where the cell selection or reselection result based on the first criterion satisfies a third condition, performing cell selection or cell reselection according to a second criterion, wherein the second criterion is used to indicate that the cell selection or cell reselection is not performed based on the slice information of the terminal device and / or the slice information of the network device; or

[0356] In a case where the cell selection or reselection result based on the first criterion satisfies a third condition, a target cell for cell selection or reselection is determined from the candidate cells determined according to the first criterion.

[0357] In some embodiments of the present application, the cell selection or reselection result satisfies the third condition, including at least one of the following situations:

[0358] The channel quality of the cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device;

[0359] The duration during which the channel quality of the cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration;

[0360] The candidate cell determined according to the first criterion does not support slicing;

[0361] The slices supported by the candidate cell determined according to the first criterion do not match the slices required by the terminal device;

[0362] The candidate cell determined according to the first criterion does not support slicing;

[0363] The candidate cell determined according to the first criterion does not support the required slice;

[0364] The candidate cells determined according to the first criterion do not support or are not indicated as supporting the first criterion.

[0365] In some embodiments of the present application, the target cell for cell selection or reselection satisfies at least one of the following conditions:

[0366] The channel quality is higher than the second cell selection or reselection threshold, the channel quality is optimal, the number of beams is the largest, the corresponding frequency priority is the highest, slicing is supported, the slicing information required by the terminal device is supported, and the supported slicing information matches the slicing information required by the terminal device.

[0367] In some embodiments of the present application, the processing unit 410 is further configured to:

[0368] Determine a cell that satisfies at least one of the following conditions as a suitable cell and / or perform a standard service on the suitable cell:

[0369] The network device does not support slicing;

[0370] The network device does not support the slice information required by the terminal device;

[0371] The slice information required by the terminal device does not match the slice information supported by the network device.

[0372] In some embodiments of the present application, the processing unit 410 is further configured to:

[0373] Determine a cell that satisfies at least one of the following conditions as an acceptable cell and / or perform a restricted service on the acceptable cell:

[0374] The network device does not support slicing;

[0375] The network device does not support the slice information required by the terminal device;

[0376] The slice information required by the terminal device does not match the slice information supported by the network device.

[0377] In some embodiments of the present application, the processing unit 410 is further configured to:

[0378] Determine a cell that satisfies at least one of the following conditions as an acceptable cell and / or perform a restricted service on the acceptable cell:

[0379] The network device does not support slicing;

[0380] The network device does not support the slice information required by the terminal device;

[0381] The slice information required by the terminal device does not match the slice information supported by the network device;

[0382] The result of the cell selection or cell reselection does not satisfy a third condition;

[0383] The terminal device performs cell selection or cell reselection using the first criterion;

[0384] The terminal device falls back to the second criterion to perform cell selection or cell reselection.

[0385] In some embodiments of the present application, the processing unit 410 is further configured to:

[0386] Determine a cell that satisfies at least one of the following conditions as a suitable cell and / or perform a standard service on the suitable cell:

[0387] The result of the cell selection or cell reselection does not satisfy a third condition;

[0388] The terminal device uses or falls back to the second criterion to perform cell selection or cell reselection.

[0389] In some embodiments of the present application, the terminal device 400 further includes:

[0390] A communication unit is used to receive second indication information sent by a network device, where the second indication information is used to instruct the terminal device to perform cell selection or cell reselection according to the first criterion.

[0391] In some embodiments of the present application, the terminal device 400 further includes:

[0392] A communication unit is used to receive third indication information sent by a network device, wherein the third indication information is used to instruct the terminal device to fall back to performing cell selection or cell reselection according to the second criterion when the cell selection or cell reselection result obtained by performing cell selection or cell reselection according to the first criterion meets the third condition, or to determine the target cell according to the result of performing the cell selection or cell reselection based on the first criterion.

[0393] Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0394] It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 400 are respectively to implement Figures 2 to 4 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0395] Figure 7 It is a schematic block diagram of a network device according to an embodiment of the present application. Figure 7 The network device 500 includes:

[0396] The communication unit 510 is used to send indication information to the terminal device, where the indication information is used to instruct the terminal device on a manner of performing cell selection or cell reselection.

[0397] In some embodiments of the present application, the indication information includes first indication information, and the first indication information is used to instruct the terminal device to determine a target criterion for performing cell selection or cell reselection based on the slice information of the terminal device and / or the slice information of the network device, and perform cell selection or cell reselection according to the target criterion.

[0398] In some embodiments of the present application, the indication information includes second indication information, and the second indication information is used to instruct the terminal device to perform cell selection or cell reselection according to a first criterion, and the first criterion may indicate that the cell selection or cell reselection is performed based on the slice information of the terminal device and / or the slice information of the network device.

[0399] In some embodiments of the present application, the indication information includes third indication information, and the third indication information is used to instruct the terminal device to fall back to performing cell selection or cell reselection according to the second criterion when the cell selection or cell reselection result obtained by performing cell selection or cell reselection according to the first criterion meets the third condition, or to determine the target cell according to the result of performing the cell selection or cell reselection based on the first criterion.

[0400] In some embodiments of the present application, the indication information is sent via at least one of the following signaling: system information, dedicated signaling.

[0401] Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the network device 500 are respectively implemented Figure 5 For the sake of brevity, the corresponding processes of the network device in the method 300 are not repeated here.

[0402] Figure 8 It is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. Figure 8 The communication device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0403] Alternatively, if Figure 8 As shown, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0404] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0405] Alternatively, if Figure 8 As shown, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0406] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of the antennas may be one or more.

[0407] Optionally, the communication device 600 may specifically be a network device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0408] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0409] Fig. 9 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig. 9 The chip 700 shown includes a processor 710, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0410] Alternatively, if Fig. 9 As shown, the chip 700 may further include a memory 720. The processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0411] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0412] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0413] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0414] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0415] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0416] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0417] Fig.10 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. Fig.10 As shown, the communication system 900 includes a terminal device 910 and a network device 920 .

[0418] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0419] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed 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. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. 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, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0420] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0421] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may 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), etc. That is to say, 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.

[0422] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0423] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0424] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0425] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0426] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0427] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0428] The embodiment of the present application also provides a computer program.

[0429] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0430] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0431] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0432] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0433] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0434] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0435] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0436] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0437] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: The method comprises: The terminal device determines a target criterion for performing cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device; the terminal device performs cell selection or cell reselection according to the target criterion; The terminal device determines, according to the slice information of the terminal device and / or the slice information of the network device, a target criterion for performing cell selection or cell reselection, including: The terminal device determines, when a first condition is met, that a target criterion for performing cell selection or cell reselection is a first criterion, wherein the first criterion is used to indicate that cell selection or cell reselection is performed based on slice information of the terminal device and / or slice information of the network device, and the first condition includes: the terminal device obtains slice information required by the terminal device; When the second condition is met, the terminal device determines that the target criterion for performing cell selection or cell reselection is the second criterion, wherein the second criterion is used to indicate that the cell selection or cell reselection is not performed based on the slice information of the terminal device and / or the slice information of the network device, and the second condition includes: the terminal device has not obtained the slice information required by the terminal device.

2. The method according to claim 1, characterized in that The slice information of the terminal device includes at least one of the following: Whether the terminal device supports slicing; Whether the terminal device obtains the slice information required by the terminal device; Whether the terminal device obtains the slice information supported by the network device; The slice information required by the terminal device.

3. The method according to claim 2, characterized in that The slice information required by the terminal device includes at least one of the following: A slice identifier corresponding to the slice required by the terminal device; The slice group identifier corresponding to the slice required by the terminal device; Parameters corresponding to the slice required by the terminal device.

4. The method according to any one of claims 1 to 3, characterized in that The slice information of the network device includes at least one of the following: Whether the network device supports slicing; Slice information supported by the network device; The slice information supported by the network device includes at least one of the following: A slice identifier corresponding to the slice supported by the network device; A slice group identifier corresponding to the slice supported by the network device; Parameters corresponding to the slices supported by the network device; The frequency priority corresponding to the slice supported by the network device; The cell selection parameters or cell reselection parameters corresponding to the slices supported by the network device.

5. The method according to claim 1, characterized in that The method further comprises: The terminal device determines that a cell that satisfies at least one of the following conditions is a suitable cell and / or performs a standard service on the suitable cell: Slice information supporting the requirements of the terminal device; The slice information required by the terminal device matches the slice information supported by the network device.

6. The method according to claim 1, characterized in that The method further comprises: In a case where the cell selection or reselection result based on the first criterion satisfies a third condition, performing cell selection or cell reselection according to a second criterion, wherein the second criterion is used to indicate that the cell selection or cell reselection is not performed based on the slice information of the terminal device and / or the slice information of the network device; or In a case where the result of cell selection or reselection based on the first criterion satisfies a third condition, a target cell for cell selection or reselection is determined from candidate cells determined according to the first criterion.

7. The method according to claim 6, characterized in that The cell selection or reselection result satisfies the third condition, including at least one of the following situations: The channel quality of the cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device; The duration during which the channel quality of the cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration; The candidate cell determined according to the first criterion does not support slicing; The slices supported by the candidate cell determined according to the first criterion do not match the slices required by the terminal device; The candidate cell determined according to the first criterion does not support the required slice; The candidate cells determined according to the first criterion do not support or are not indicated as supporting the first criterion.

8. A terminal device, characterized in that: The terminal device comprises: A processing unit, configured to determine a target criterion for performing cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device; The processing unit is configured to perform cell selection or cell reselection according to the target criterion; The processing unit is used to determine a target criterion for performing cell selection or cell reselection according to the slice information of the terminal device and / or the slice information of the network device, including: The processing unit is configured to determine, when a first condition is met, that a target criterion for performing cell selection or cell reselection is a first criterion, wherein the first criterion is used to indicate that the cell selection or cell reselection is performed based on the slice information of the terminal device and / or the slice information of the network device, and the first condition includes: the terminal device obtains the slice information required by the terminal device; The processing unit is used to determine that the target criterion for performing cell selection or cell reselection is the second criterion when the second condition is met, wherein the second criterion is used to indicate that the cell selection or cell reselection is not performed based on the slice information of the terminal device and / or the slice information of the network device, and the second condition includes: the terminal device has not obtained the slice information required by the terminal device.

9. The terminal device according to claim 8, characterized in that: The slice information of the terminal device includes at least one of the following: Whether the terminal device supports slicing; Whether the terminal device obtains the slice information required by the terminal device; Whether the terminal device obtains the slice information supported by the network device; The slice information required by the terminal device.

10. The terminal device according to claim 9, characterized in that: The slice information required by the terminal device includes at least one of the following: A slice identifier corresponding to the slice required by the terminal device; The slice group identifier corresponding to the slice required by the terminal device; Parameters corresponding to the slice required by the terminal device.

11. The terminal device according to any one of claims 8 to 10, characterized in that: The slice information of the network device includes at least one of the following: Whether the network device supports slicing; Slice information supported by the network device; The slice information supported by the network device includes at least one of the following: A slice identifier corresponding to the slice supported by the network device; A slice group identifier corresponding to the slice supported by the network device; Parameters corresponding to the slices supported by the network device; The frequency priority corresponding to the slice supported by the network device; The cell selection parameters or cell reselection parameters corresponding to the slices supported by the network device.

12. The terminal device according to claim 8, characterized in that: The processing unit is also used for: Determine a cell that satisfies at least one of the following conditions as a suitable cell and / or perform a standard service on the suitable cell: Slice information supporting the requirements of the terminal device; The slice information required by the terminal device matches the slice information supported by the network device.

13. The terminal device according to claim 8, characterized in that: The processing unit is also used for: In a case where the cell selection or reselection result based on the first criterion satisfies a third condition, performing cell selection or cell reselection according to a second criterion, wherein the second criterion is used to indicate that the cell selection or cell reselection is not performed based on the slice information of the terminal device and / or the slice information of the network device; or In a case where the cell selection or reselection result based on the first criterion satisfies a third condition, a target cell for cell selection or reselection is determined from the candidate cells determined according to the first criterion.

14. The terminal device according to claim 13, characterized in that: The cell selection or reselection result satisfies the third condition, including at least one of the following situations: The channel quality of the cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device; The duration during which the channel quality of the cell is less than or not greater than the first cell selection or reselection threshold corresponding to the slice of the network device is greater than or equal to the first duration; The candidate cell determined according to the first criterion does not support slicing; The slices supported by the candidate cell determined according to the first criterion do not match the slices required by the terminal device; The candidate cell determined according to the first criterion does not support the required slice; The candidate cells determined according to the first criterion do not support or are not indicated as supporting the first criterion.

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