Slice-based cell reselection method, electronic device, and program

Abstract

An embodiment of the present disclosure provides a slice-based cell reselection method and related device, the method including: a user device obtaining network slice information and slice-based cell reselection information, the user device determining a slice-based cell reselection first target priority frequency according to the network slice information and the slice-based cell reselection information, and the user device performing cell reselection at the slice-based cell reselection first target priority frequency, and determining a suitable resident cell at the slice-based cell reselection first target priority frequency.

Description

Cross-Citation of Related Applications

[0001] This application is National application of international application PCT / CN 2022 / 104689 filed on July 8, 2022 It is a multi-stage application, Priority is claimed from Chinese Patent Application No. 202110849474.3, filed on July 27, 2021, entitled "Slice-based cell reselection method and related device" It is something that stretches, Both the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] The present disclosure relates to the field of communications technology, and in particular to a slice-based cell reselection method, a user device, an electronic device, and a computer-readable storage medium. [Background technology]

[0003] 3GPP (3rd Generation Partnership Project) In 5G (5th Generation Mobile Communication Technology), network slicing (hereinafter referred to as "slicing") technology has been introduced to provide differentiated services to users through a sliced ​​service quality guarantee system. 。

[0004] Na The information disclosed in the Background section above is intended only to enhance understanding of the context of the present disclosure. Summary of the Invention

[0005] The embodiments of the present disclosure provide a slice-based cell reselection method, an electronic device, and program to provide.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by practice of the disclosure.

[0007] An embodiment of the present disclosure provides a slice-based cell reselection method executed by a user device, the method including: acquiring network slice information and slice-based cell reselection information; determining a slice-based cell reselection first priority frequency according to the network slice information and the slice-based cell reselection information; performing cell reselection at the slice-based cell reselection first priority frequency; and determining a suitable resident cell at the slice-based cell reselection first priority frequency. fruit, Determining the slice-based cell reselection first priority frequency according to the network slice information and the slice-based cell reselection information includes: determining a slice-based cell reselection first candidate frequency according to the network slice information and the slice-based cell reselection information; When determining that the slice-based cell reselection first candidate frequencies determined by the user device include a plurality of first candidate frequencies, determining a slice-based cell reselection first priority frequency from the plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information; Determining a slice-based cell reselection first priority frequency from a plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information includes: Obtaining a network slice priority of each network slice to which the user device is permitted to access, and determining a slice priority weight value of each network slice to which the user device is permitted to access; Obtaining a weighted slice cell reselection frequency priority of each slice-based cell reselection first candidate frequency according to a slice priority weight value of each network slice to which the user device is allowed to access and a slice cell reselection frequency priority of each slice-based cell reselection first candidate frequency; selecting a slice-based cell reselection first candidate frequency having a highest weighted slice cell reselection frequency priority as the slice-based cell reselection first priority frequency; When determining that there is more than one slice-based cell reselection first priority frequency determined according to the highest weighted slice cell reselection frequency priority, selecting a slice-based cell reselection first candidate frequency with the highest cell reselection frequency priority as the slice-based cell reselection first priority frequency. nothing.

[0008] An embodiment of the present disclosure is ,Ko Computer Program Offer When the computer program is executed by a processor, the computer program implements the slice-based cell reselection method described in the above embodiment.

[0009] An embodiment of the present disclosure provides an electronic device comprising one or more processors and a storage device configured to store one or more programs that, when executed by the one or more processors, cause the one or more processors to perform a slice-based cell reselection method described in the above embodiment.

[0010] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. [Brief explanation of the drawings]

[0011] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and are used in conjunction with the specification to explain the principles of the present disclosure. Apparently, the accompanying drawings in the following description are only a part of the embodiments of the present disclosure, and other drawings can be obtained from these drawings by those skilled in the art without any creative efforts. [Figure 1] FIG. 1 is a schematic diagram of the resident frequency selection challenge for supporting multiple service slices. [Figure 2] FIG. 1 is a schematic diagram of the fairness challenge for slice remapping. [Figure 3] 1 is a flowchart of a slice-based cell reselection method according to an embodiment of the present disclosure. [Figure 4] 10 is a flowchart of a slice-based cell reselection method according to another embodiment of the present disclosure. [Figure 5] FIG. 2 is a block diagram of a user device according to one embodiment of the present disclosure. [Figure 6] FIG. 1 is a block diagram of an electronic device according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] Exemplary embodiments will now be described in more detail with reference to the accompanying drawings. However, exemplary embodiments may be embodied in various forms and should not be construed as being limited to the examples set forth herein; rather, defining these embodiments may make this disclosure more comprehensive and complete, and may comprehensively convey the idea of ​​exemplary embodiments to those skilled in the art.

[0013] It should be noted that the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided. This will provide a complete understanding of the embodiments of the present disclosure. It will be understood that the technical solutions of the present disclosure can be implemented without one or more of the specific details, or that other methods, components, devices, steps, etc. can be employed. In other cases, to avoid obscuring aspects of the present disclosure, For that reason, well-known methods, devices, implementations, or operations are not shown or described in detail.

[0014] The block diagrams shown in the accompanying figures are merely functional entities that do not necessarily correspond to physically separate entities, i.e. the functional entities may be implemented in the form of software, in one or more hardware modules or integrated circuits, in different network and / or processor and / or microcontroller devices.

[0015] The flowcharts shown in the accompanying drawings are exemplary illustrations only, and not all elements and operations / steps are required to be included or to be performed in the order depicted. ,Some of the operations / steps can be decomposed, and some of the ,operations / steps can be combined or partially combined, so the actual ,execution order may vary depending on the actual situation.

[0016] In particular, according to embodiments of the present disclosure, the processes described below with reference to flowcharts may be implemented as computer software programs. Embodiments include a computer program product including a computer program carried on a computer readable storage medium, the computer program including program code for performing the methods illustrated in the flowcharts.

[0017] It should be noted that the computer-readable storage medium referred to in this disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. More specific examples of computer-readable storage media include an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), and the like. rammable read only memory (or flash memory), optical fiber Examples of computer-readable storage media include, but are not limited to, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device. Also, in the context of this disclosure, a computer-readable The readable signal medium may include a propagated data signal in baseband or as part of a carrier carrying computer readable program code. The conveyed data signal may take a variety of forms, including, but not limited to, an electromagnetic signal, an optical signal, or any suitable combination of the foregoing. The medium may be any computer-readable storage medium other than a computer-readable storage medium that transmits, propagates, or transmits a program used by or in connection with an instruction execution system, apparatus, or device. The program code contained in the computer-readable storage medium may be transmitted wirelessly, by wire, by fiber optic cable, by RF (Radio Frequency), or the like, or by any suitable combination of the foregoing. The transmission may be carried out using any suitable medium, including but not limited to a wireless communication medium.

[0018] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods, devices, and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowcharts or block diagrams may represent a module, A module, program segment, or portion of code may represent a program segment or portion of code, which comprises one or more executable instructions for implementing a specified logical function. It should be noted that the functions described may occur in a different order than that shown in the accompanying figures. For example, two boxes shown as successive may in fact be executed substantially in parallel. In addition, each box within a block diagram or flowchart and the corresponding block or flowchart may be executed in reverse order, depending on the functionality involved. It should be noted that the combination of boxes in the chart may be implemented in a dedicated hardware-based system that performs the specified functions or operations, or may be implemented in a combination of dedicated hardware and computer instructions.

[0019] The units described as being involved in the embodiments of the present disclosure may be implemented by software or hardware, and the described units may be included in a processor, where the names of the units do not constitute limitations on the units themselves in a particular case.

[0020] In another aspect, the present application also provides a computer-readable storage medium, which may be included in the electronic device described in the above embodiment, or may exist separately without being assembled into the electronic device. The computer-readable storage medium carries one or more programs that, when executed by one such electronic device, cause the electronic device to perform the method as described in the following embodiments. For example, the electronic device may be a computer-readable storage medium as shown in FIG. 3 or FIG. Various steps can be realized as shown in 4.

[0021] 5G network slicing technology has certain limitations and focuses on the core network. Therefore, the number of slices in the core network can be large, but the number of slices on the wireless side (Wireless Less Access Network Slicing, abbreviated as RAN Slicing The number of wireless slices is limited due to resource constraints, and A radio slice may correspond to multiple core network slices.

[0022] To improve wireless capability perception and provide users with more differentiated service quality guarantees, Therefore, research into RAN Slicing enhancement technologies is being conducted, mainly for UE (User Device). This solves the issues of high-speed access and service continuity assurance for the Internet.

[0023] Currently, the wireless slicing enhancement project is still in the discussion stage, and the relevant technical solutions are still being developed. Solutions and details have not yet been agreed upon and further research is needed.

[0024] Therefore, a new slice-based cell reselection method, a user device, an electronic device, and A computer readable storage medium is required.

[0025] One of the problems that can be solved by the method in the embodiment of the present disclosure is the problem of slice-based cell reselection frequency priority. decision It is a challenge.

[0026] First, regarding the slice-based cell reselection mechanism, how the UE uses slice (group) information instructed by the network side (hereinafter referred to as the network device) to select a high-priority frequency ( for example , slice-based cell reselection first Excellent Cell reselection based on previous frequency and slices Excellent Priority frequency, 1st No. rice Excellent Cell reselection based on previous frequency and slice #3 Excellent Advanced frequency number) and then select the appropriate cell. identification and stay (for example , 1st No Se and 2 No Se In particular, when a UE supports multiple slice services, it is assumed that a UE simultaneously supports slice 1 and slice 2 services, as shown in Figure 1. Regarding the slice-based cell reselection mechanism, how can the UE select the resident frequency ( example Ba, No. 1 Excellent Advanced frequency number) By rationally selecting the slices (groups), high-speed access is realized.

[0027] The second problem that can be solved by the method in the embodiment of the present disclosure is the fairness problem of slice remapping.

[0028] Next, consider the issue of fairness in network service provision to users. As shown in Figure 2, assume that UE1 starts service on slice 1 in cell 1. When UE1 moves to cell 2, because cell 2 does not support slice 1, the slice remapping mechanism maps the service on slice 1 to slice 2, ensuring service continuity during UE mobility. This is the scenario considered by R17 RAN slicing. UE2 currently starts service on slice 1 in the coverage area of ​​cell 2. However, because cell 2 does not support slice 1, it is switched or redirected by cell 2 to another cell, resulting in a certain delay.

[0029] On the other hand, the initial access slice1 service cannot be remapped to slice2 (slice 2), and compared to UE1 switching to cell2, this mechanism cannot provide fair service to the same type of service for different users. Currently, the slice remapping mechanism to ensure service continuity considered in R17 does not apply to the initial access scenario, and cannot provide fair service to the same type of service for different users, and further optimization is required.

[0030] 3 is a flow chart of a slice-based cell reselection method according to an embodiment of the present disclosure. The method provided by the embodiment of FIG. 3 is performed by any UE.

[0031] As shown in FIG. 3, the method provided by the embodiment of the present disclosure may include the following steps:

[0032] In step S310, the user device obtains network slice information and slice-based cell reselection information.

[0033] In an exemplary embodiment, the network slice information includes a network slice to which the user device is authorized to access. (group) Identifier and corresponding For cell reselection Meno The slice-based cell reselection information may include a network slice priority. handle It may include a network slice or slice group identifier supported by the frequency and a corresponding slice cell reselection frequency priority. 。

[0034] difference Additionally, the user device may also obtain a cell reselection frequency priority for each frequency.

[0035] NR (New Radio, a global 5G standard for a new air interface) system In the existing cell reselection mechanism of the system, the network side sets the IE CellReselectionPriority (cell reselection priority, e.g., 0 to 1) in the system information. Absolute frequency priority information of inter-frequency or inter-system frequencies can be indicated by CellReselectionSubPriority (which takes a value of 0.7, with 0 indicating the lowest priority) and CellReselectionSubPriority (which takes a value of 0.2, 0.4, 0.6, 0.8, for example), which is referred to as conventional frequency priority information and also referred to as cell reselection frequency priority in the embodiments of the present disclosure.

[0036] In step S320, the user device performs a slice-based cell reselection first according to the network slice information and the slice-based cell reselection information. Excellent Determine the first frequency.

[0037] In an exemplary embodiment, the user device performs the slice-based cell reselection first step in response to the network slice information and the slice-based cell reselection information. Excellent Determining a first candidate frequency includes determining a first candidate frequency for slice-based cell reselection by the user device according to the network slice information and the slice-based cell reselection information, and when the first candidate frequency for slice-based cell reselection determined by the user device is a single frequency, determining the first candidate frequency for slice-based cell reselection as the first candidate frequency for slice-based cell reselection. Excellent and when the slice-based cell reselection first candidate frequency determined by the user device is a plurality of frequencies, selecting the slice-based cell reselection first candidate frequency from the plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information. Excellent and determining a first frequency.

[0038] In an exemplary embodiment, the user device determines a slice-based cell reselection first candidate frequency in response to the network slice information and the slice-based cell reselection information. , all network slabs that user devices are allowed to access. Chair (Group) If there is a frequency that supports , user device access All allowed network slices (groups) and setting a frequency that supports the above-mentioned slice as a first candidate frequency for cell reselection based on the slice. , user device access All allowed network slices (groups) If no frequency supports User device access is granted Some Network slices (group P) selecting a frequency that supports the slice-based cell reselection first candidate frequency; The network slice (group) to which the user device is allowed access loop) If there is no frequency supporting the slice remapping function and it is confirmed that the slice remapping function is configured in the user device, The network that user devices are allowed to access Work Slices (Groups) and selecting a frequency that supports the remapping slice as a first candidate frequency for cell reselection based on the slice.

[0039] In an exemplary embodiment, User device access is granted Some Networks Rice (Group) Selecting a frequency that supports the slice-based cell reselection first candidate frequency includes: The networks that user devices are allowed to access. Kuss Rice (Group) selecting a frequency that supports the largest number of the above as a first candidate frequency for cell reselection based on the slice, or User device access Allowed network slices (groups) selecting a frequency having a number of supporting frequencies greater than a first threshold as a first candidate frequency for cell reselection based on the slice; or Yu Each network slice (group) that the user device is allowed to access According to the network slice priority of The networks that user devices are allowed to access Slice (Group)determining a slice priority weight value that supports the slice priority, obtaining a slice priority accumulated weight value according to the slice priority weight value, and selecting a frequency with the highest slice priority accumulated weight value as a first candidate frequency for cell reselection based on the slice, or selecting a frequency with a slice priority accumulated weight value that exceeds a second threshold as a first candidate frequency for cell reselection based on the slice.

[0040] In an exemplary embodiment, the user device performs the slice-based cell reselection in response to the network slice information and the slice-based cell reselection information. ☐ Determining candidate frequencies for 1 includes: Each network slice (group) that a user device is allowed to access P) determining a service type of the user device; User device access Each network slice (group) that is allowed access According to the service trigger frequency for the user device, The networks that user devices are allowed to access. Kuss Rice (Group) Determine the service usage level for the service, and if the service usage level is equal to or greater than the service usage level threshold, The network licenses that user devices are allowed to access. Su (Group) Selecting a frequency that supports the slice-based cell reselection first candidate frequency; or Each network that the user device is allowed to access Kuss Rice (Group) Depending on the service type User device access is allowed. Each network slice (group) and determining a service access delay requirement for the service access delay threshold. Access to user devices Allowed network slices (groups) and selecting a frequency that supports the slice-based cell reselection first candidate frequency.

[0041] In an exemplary embodiment, a slice-based cell reselection first candidate frequency is selected from a plurality of slice-based cell reselection first candidate frequencies in response to the network slice information and the slice-based cell reselection information. Excellent Determining a first candidate frequency includes determining a slice-based cell reselection first candidate frequency having a highest slice cell reselection frequency priority as the slice-based cell reselection first candidate frequency. Excellentand selecting a slice as the first frequency and a slice-based cell reselection first frequency determined according to the highest slice cell reselection frequency priority. Excellent If there is more than one candidate frequency, the first candidate frequency for cell reselection based on the slice with the highest cell reselection frequency priority is selected as the first candidate frequency for cell reselection based on the slice. Excellent and selecting the frequency as the first frequency.

[0042] In an exemplary embodiment, a slice-based cell reselection first candidate frequency is selected from a plurality of slice-based cell reselection first candidate frequencies in response to the network slice information and the slice-based cell reselection information. Excellent Determining the frequency of the signal User device access Each network slice (group) where access is allowed and obtaining a network slice priority of the User device access is allowed Network slices (groups) to be used determining a slice priority weight value for the slice; each The network slice (group) that the user device is allowed to access and obtaining a weighted slice cell reselection frequency priority of each slice-based cell reselection first candidate frequency according to the slice priority weight value and the slice cell reselection frequency priority of each slice-based cell reselection first candidate frequency; and selecting the slice-based cell reselection first candidate frequency having the highest weighted slice cell reselection frequency priority as the slice-based cell reselection first candidate frequency. Excellent and selecting the highest weighted slice as the first frequency and performing cell reselection based on the slice determined according to the cell reselection frequency priority. Excellent If there is more than one candidate frequency, the first candidate frequency for cell reselection based on the slice with the highest cell reselection frequency priority is selected as the first candidate frequency for cell reselection based on the slice. Excellent and selecting the frequency as the first frequency.

[0043] In an exemplary embodiment, a slice-based cell reselection first candidate frequency is selected from a plurality of slice-based cell reselection first candidate frequencies in response to the network slice information and the slice-based cell reselection information. ExcellentDetermining the frequency of the signal User device access Each network slice (group) where access is allowed determining a service type of the user device; Each network slab that a user device is allowed to access Chair (Group) According to the service trigger frequency for the user device, You Each network slice (group) that the user device is allowed to access Determine the service usage level for the service, and if the service usage level is equal to or greater than the service usage level threshold, User Data The network slice (group) to which the device is allowed access selecting a slice-based cell reselection first candidate frequency having the highest slice cell reselection frequency priority as the slice-based cell reselection first priority frequency; or User - Each network slice (group) that the device is allowed to access Depending on the service type Each network slice (group) that a user device is allowed to access ) Determine the service access delay requirement of the service access delay threshold. The network slice (group) to which the user device is allowed access loop) The slice-based cell reselection first candidate frequency having the highest slice cell reselection frequency priority in the slice-based cell reselection first candidate frequency is selected as the slice-based cell reselection first candidate frequency. Excellent and selecting the frequency as the first frequency.

[0044] In step S330, the user device performs a first cell reselection based on the slice. Excellent Perform cell reselection on the first frequency, and perform cell reselection on the first frequency based on the slice. Excellent Determine the appropriate resident cell on the desired frequency.

[0045] In an exemplary embodiment, the method further comprises: No. determining that the user device supports triggering slice-based cell reselection when initiating service for a slice; and determining that the user device needs to trigger slice-based cell reselection when initiating service for the slice; No. selecting a frequency supporting the slice as a slice-based cell reselection second candidate frequency; and No.Rice slice cell reselection Cell reselection based on slice with frequency priority Cell reselection based on slice with second candidate frequency Excellent the highest frequency of the first No. Rice slice cell reselection Cell reselection based on slice determined according to frequency priority Second Excellent If there is more than one candidate frequency, the slice-based cell reselection second candidate frequency with the highest cell reselection frequency priority is selected as the slice-based cell reselection second candidate frequency. Excellent and selecting a frequency as the first frequency, and the user device performing a cell reselection from the appropriate resident cell based on the slice. Excellent First on the previous frequency No Se Reselect to the first No Se and initiating random access in the loop.

[0046] In an exemplary embodiment, determining that the user device supports triggering slice-based cell reselection when initiating service comprises determining that the user device supports triggering slice-based cell reselection when initiating service if the user device receives a first information element from a network device, the first information element indicating that the user device supports triggering slice-based cell reselection when initiating service, or determining that the user device supports triggering slice-based cell reselection when initiating service if the first information element indicates that the user device supports triggering slice-based cell reselection when initiating service for a first specific slice, and the first specific slice is the first specific slice. No. If a slice is included, the method may include determining that the user device supports triggering slice-based cell reselection when initiating service.

[0047] In an exemplary embodiment, the method further comprises: if the first information element indicates that the user device does not support triggering slice-based cell reselection when initiating service, or if the first information element indicates that the user device does not support triggering slice-based cell reselection when initiating service for the specific slice, or if the first information element indicates that the user device supports triggering slice-based cell reselection when initiating service for a first specific slice, and the first specific slice is the first slice; No. If the slice is not included or if the user device does not receive the first information element from the network device, the method may include determining that the user device does not support triggering slice-based cell reselection when initiating service, and the user device initiating random access in the appropriate resident cell.

[0048] In an exemplary embodiment, identifying that the user device needs to trigger slice-based cell reselection comprises: Excellent The first frequency No. If slice is not supported, or if cell reselection based on the slice is Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency corresponding to the No. If the slice cell reselection frequency priority of the slice is less than the priority threshold, or if the slice-based cell reselection frequency priority is less than the priority threshold, Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency No. rice Excellent If not, the method may include determining that the user device needs to trigger slice-based cell reselection.

[0049] In an exemplary embodiment, the method further comprises: Excellent The first frequency No. Supports slices and cell reselection based on the slice first of Excellent The first frequency corresponding to the No. If the slice cell reselection frequency priority of the slice is greater than the priority threshold, or if the slice-based cell reselection frequency priority is greater than the priority threshold, Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency No. rice Excellent If the first frequency is the first frequency, the user device determines that slice-based cell reselection is not required, and the user device determines whether slice-based cell reselection is required. No. and starting the service of rice.

[0050] In an exemplary embodiment, the method further comprises: No. If there is no frequency that supports Rice, No. Rice 2 No. Remapping to Rice and the second No. From frequencies that support slice remapping access, to frequencies that support slice-based cell reselection. Excellent and selecting a frequency as the first frequency, and the user device performing a cell reselection from the appropriate resident cell based on the slice. Excellent Second at the previous frequency Cell Reselect to the second No Se and initiating random access in the loop.

[0051] In an exemplary embodiment, the first No. Rice 2 No.Remapping to a slice may include determining that the user device supports the slice remapping function when the user device receives a second information element from a network device, and the second information element indicates that the user device supports triggering cell reselection and initial access based on slice remapping, or determining that the user device supports triggering cell reselection and initial access based on slice remapping for a service of a second specific slice when the second information element indicates that the user device supports triggering cell reselection and initial access based on slice remapping for a service of a second specific slice, and the second specific slice is the first specific slice. No. determining that the user device supports a slice remapping feature if the first slice includes the first slice; No. Rice 2 No. and remapping to Rice.

[0052] In an exemplary embodiment, the method further comprises: if the second information element indicates that the user device does not support triggering cell reselection or initial access based on slice remapping, or if the second information element indicates that the user device does not support triggering cell reselection or initial access based on slice remapping for a service of the second specific slice, or if the second information element indicates that the user device supports triggering cell reselection or initial access based on slice remapping for a service of the second specific slice, and the second specific slice is the first specific slice; No. If the slice does not include a slice, or if the user device has not received the second information element from the network device, the method may include determining that the user device does not support the slice remapping function, and the user device initiating random access in the appropriate resident cell.

[0053] In an exemplary embodiment, the second No SeInitiating random access in the second mode means that the user device No Se The process of initiating random access in a device may include sending an access request to a network device, and a slice remapping instruction is carried in the access request, so that the network device selects to accept or reject the access request of the user device according to the slice remapping instruction.

[0054] According to the slice-based cell reselection method of the embodiment of the present disclosure, a user device acquires network slice information and slice-based cell reselection information, and performs a slice-based cell reselection first according to the acquired network slice information and the slice-based cell reselection information. Excellent By determining the first frequency, the user device performs cell reselection based on the determined slice. Excellent Cell reselection is performed on the first frequency, and the first cell reselection based on the slice is performed on the second frequency. Excellent Determine an appropriate resident cell on the next frequency and perform cell reselection based on the slice Excellent To solve the problem of prior frequency selection and enable UE to achieve high-speed access based on slices (groups), a slice-based cell reselection method has been implemented. Excellent This can help in selecting the appropriate frequency.

[0055] A method according to an embodiment of the present disclosure is illustrated below in conjunction with FIG. 4, although the present disclosure is not limited thereto.

[0056] The method in the embodiments of the present disclosure enables slice-based cell reselection and access and can be applied in the field of wireless communication and terminal technology, particularly in the context of 5G evolution and its standardization.

[0057] Application scenarios of the method in the embodiment of the present disclosure may include the following: For fast access of the UE, slice-related cell reselection parameters can be instructed to the UE by broadcast or RRC (Radio Resource Control) dedicated signaling (e.g., RRCRelease message, i.e., RRC release message). Supported slice (group) information and slice (group)-based frequency priority information enable the UE to quickly access a cell that supports its service slice, avoiding the delay caused by the conventional operation in which switching or redirection is triggered due to the related service not being supported after access. From the perspective of service continuity guarantee, the main point is to introduce a slice remapping mechanism / function, which can remap a slice when radio resources cannot meet the service level agreement (SLA) of the service. The process by which UEs move to avoid service interruptions due to reduced demand levels Based on Partial or total denial of service due to a base station not supporting slicing is reduced.

[0058] The method in the embodiment of the present disclosure can be applied to 5G and subsequent evolution systems, and strengthens the triggering scene of cell reselection and the selection mechanism of frequency priority, adding the triggering of a slice-based cell reselection mechanism when a UE starts service, and designs a multi-level sequential screening mechanism for the UE cell reselection process, helping the UE determine the reselection frequency priority, rationally select the resident frequency and cell, and better realize fast access based on slices. Meanwhile, to address the potential fairness issues caused by the slice remapping mechanism, a cell reselection and early access mechanism based on slice remapping is proposed, which provides fairer differentiated radio resources and more fair access to UEs / users. Provide services.

[0059] FIG. 4 schematically illustrates a flowchart of a slice-based cell reselection method according to another embodiment of the present disclosure.

[0060] As shown in FIG. 4, the method in the embodiment of the present disclosure may include the following steps.

[0061] The method in the embodiment of the present disclosure is suitable for slice-based cell reselection and access, and its main aspect includes two parts.

[0062] The first part is slice-based inter-frequency cell reselection, which may include the following steps S401 to S404.

[0063] In step S401, an inter-frequency cell reselection is triggered.

[0064] When a UE triggers inter-frequency cell reselection, the slice-based inter-frequency cell reselection mechanism determines a high-priority frequency based on information such as the UE's service slice requirements, slice (group)-based frequency priority information, conventional frequency priority information, and frequency priority selection policy, and further determines a suitable cell on the high-priority frequency based on cell reselection criteria, and selects a suitable resident cell. Cell This includes being present at the facility.

[0065] In step S402, a candidate set of frequencies to be preferentially accessed is determined based on the UE service slice requirements.

[0066] Step S402 may specifically include step 1, in which, when the UE needs to trigger inter-frequency cell reselection, the UE first determines candidate frequency information / candidate frequency set that the UE will preferentially access based on slice (group) information supported between frequencies received in a broadcast message or RRC signaling.

[0067] In an embodiment of the present disclosure, a policy for determining a candidate frequency set that a UE will preferentially access can be configured by the network side or determined autonomously by the UE, including, but not limited to, one or more of the following methods: (1) All network slices (groups) that a user device is allowed to access P) The frequencies that support the IEEE 802.11 standard are selected as the candidate frequency set.

[0068] (2) All network slices (groups) that a user device is allowed to access P) If there is no frequency that supports User device access Some network slices (groups) are allowed The frequencies that support the IEEE 802.11 standard are selected as the candidate frequency set.

[0069] for example, The network slice (group) that the user device is allowed to access Selecting as the candidate frequency set the frequencies that support the highest number of User Device The network slice (group) to which the device is allowed access selecting as a candidate frequency set those frequencies for which the number of frequencies supporting User device access The network slice (group) where access is permitted Based on the network slice priority of Each network slice (group) that a user device is allowed to access The slice priority weight value is determined, and the slice priority accumulated weight value after the weighting calculation is the highest (e.g., the highest value) or the slice priority accumulated weight value satisfies a second threshold (the slice priority accumulated weight value exceeds this second threshold) and is selected as the candidate frequency set.

[0070] In an embodiment of the present disclosure, the slice priority weight value of a slice (group) is: User Device Each network slice (group) that the device is allowed to access The network slice priority, whether the slice (group) is frequently triggered or has high latency requirements, etc., can be set autonomously by the network side configuration or by the UE, and the embodiments of the present disclosure are not limited thereto.

[0071] In the embodiment of the present disclosure, the first threshold and the second threshold can be set according to actual needs, and the second threshold and the first threshold can be the same or different, and the present disclosure is not limited thereto.

[0072] (3) The network slice (group) that the user device is allowed to access If there is no frequency supporting the slice (group) and the network side configures the slice (group) remapping function in the UE, the UE can determine the remapping slice (group) based on the slice (group) remapping policy configured on the network side, and then select the frequency supporting the corresponding remapping slice (group) as the candidate frequency set.

[0073] The candidate frequency set determined according to (1), (2), and (3) of step 1 above may include a slice-based cell reselection first candidate frequency.

[0074] (4) For inter-frequency reselection triggered when a UE starts a service, a service slice (group) (e.g., the first No. slice) is currently being triggered or remapped to a new service slice (group) (e.g., the second No. Rice) as the candidate frequency set.

[0075] The candidate frequency set determined by the frequencies supporting the currently triggered service slice (group) may include a second candidate frequency for cell reselection based on each slice. The candidate frequency set determined by the frequencies supporting the new service slice (group) to be remapped may include a third candidate frequency for cell reselection based on the slice.

[0076] In step S403, a high priority frequency is determined based on slice (group)-based frequency priority information, a frequency priority selection policy, and the like.

[0077] Step S403 may specifically include a step in which the UE determines a high-priority frequency based on slice (group)-based frequency priority information received via broadcast or RRC signaling, conventional frequency priority information, a slice-based frequency priority selection policy, etc.

[0078] In embodiments of the present disclosure, the slice-based frequency priority selection policy can be configured by the network side or determined autonomously by the UE, and includes, but is not limited to, one or more of the following schemes:

[0079] (1) Select the frequency with the highest slice (group) based frequency priority information as the high priority frequency.

[0080] In an embodiment of the present disclosure, a UE receives one service slice (group) (i.e. User Device The network slice (group) to which the device is allowed access If only one slice (group) is desired, the frequency that supports that slice (group) and has the highest slice cell reselection frequency priority can be selected as the high-priority frequency.

[0081] The UE can receive multiple service slices (groups) (i.e., User device access is allowed Network slices (groups) to be used is greater than one), the frequency with the highest slice cell reselection frequency priority from all those supporting the associated slice (group) can be selected as the high-priority frequency.

[0082] (2) Each network slice (group) that a user device is allowed to access Get the network slice priority of User Data The network slice (group) to which the device is allowed access determine a slice priority weight value of the slice (group), and calculate a slice cell reselection frequency priority with a weight according to the slice priority weight value supporting the slice (group) to obtain a weighted slice cell reselection frequency priority, and select a frequency with a high (e.g., highest) value of the weighted slice cell reselection frequency priority as a high-priority frequency.

[0083] The slice priority weight value of the slice (group) here is the slice priority weight value in (2) of step 1. That is, the slice priority weight value of the slice (group) is Each network slice (group) that a user device is allowed to accessThe network slice priority, such as whether a slice (group) is frequently triggered or has high latency requirements, may be configured by the network side or may be set autonomously by the UE, and embodiments of the present disclosure are not limited thereto.

[0084] (3) Select the frequency with the highest slice cell reselection frequency priority corresponding to the slice (group) that is frequently triggered or has the highest delay requirement as the high-priority frequency.

[0085] The high-priority frequency determined according to (1), (2), and (3) in step 2 above is used in the slice-based cell reselection first step. Excellent The frequency may include the frequency of the signal.

[0086] (4) For inter-frequency reselection triggered when a UE starts a service, select the frequency with the highest slice cell reselection frequency priority that supports the currently triggered service slice (group) or the remapped new service slice (group) as the high-priority frequency.

[0087] Here, the high priority frequency determined by the frequency with the highest slice cell reselection frequency priority that supports the currently triggered service slice (group) is used in the slice-based cell reselection second Excellent The frequency may include the frequency of the signal.

[0088] The high priority frequency determined by selecting the frequency with the highest slice cell reselection frequency priority that supports the new service slice (group) to be remapped is used in the slice-based cell reselection third step. Excellent The frequency may include the frequency of the signal.

[0089] (5) If there is more than one high-priority frequency determined based on the above method, select the frequency with the highest (eg, highest) conventional frequency priority as the high-priority frequency.

[0090] In step S404, a suitable cell on a high priority frequency is determined to reside on based on cell reselection criteria.

[0091] Step S404 may specifically include step 3, in which the UE selects and resides on a suitable cell, for example, a cell whose signal quality meets the requirements, on a high-priority frequency based on a cell reselection rule.

[0092] The second part is fast access based on slices, which may include the following steps S405 to S407.

[0093] In step S405, when the UE triggers a service, it determines whether inter-frequency cell reselection is supported again. If it is supported, it executes step S406; if not, it executes step S407.

[0094] In step S406, it continues to determine whether another inter-frequency cell reselection is necessary, and if so, returns to step S401 to trigger inter-frequency cell reselection; if not, execute step S407.

[0095] When the UE triggers a service, it first determines whether slice-based cell reselection needs to be triggered and whether it is supported. If it is not supported or not required, it initiates random access directly to an appropriate resident cell. Otherwise, one inter-frequency cell reselection is triggered, and random access is initiated by reselecting to an appropriate cell on a high-priority frequency that supports the currently triggered service slice (group) or a new slice (group) to be remapped. Specifically, this may include the following steps 1 to 5.

[0096] Step 1. When the UE starts a service, the UE determines the slice type of the service to be started based on the slice type information indicated by the NAS (Network Attached Storage) layer. You can determine the slice (group) type of the service.

[0097] The UE first determines whether it supports triggering slice-based inter-frequency cell reselection when the UE starts a service based on the network configuration. If not supported, random access is initiated directly in the appropriate resident cell. If supported, the UE can perform the following operations:

[0098] Step 2. The UE receives the cellular data via a broadcast message or RRC signaling. Based on the policy to trigger cell reselection based on slice (group) related information and services, determine whether a single slice-based cell reselection should be triggered.

[0099] In embodiments of the present disclosure, the policy for triggering cell reselection based on service can be determined autonomously by the network side or by the UE, and can include, but is not limited to, one or more of the following methods:

[0100] (1) Slice-based cell reselection 1 Excellent The service slice (group) where the first frequency starts (e.g., the first No. The preferred access frequency for the service slice (group) is not the preferred access frequency for the service slice (group).

[0101] In the embodiments of the present disclosure, the determination policy of the preferred access frequency can be configured by the network side or autonomously determined by the UE, and can include, but is not limited to, the following methods:

[0102] Slice-based cell reselection 1 Excellent If the first frequency is a high priority frequency of the starting service slice (group), slice-based cell reselection is performed first. ExcellentDetermine that the previous frequency is the preferred access frequency for the serving slice (group), and if not, perform slice-based cell reselection. Excellent determining that the previous frequency is not a preferred access frequency for the service slice (group); Or slice-based cell reselection first Excellent If the slice cell reselection frequency priority for the service slice (group) where the first frequency starts is greater than a threshold (i.e., the priority threshold may be set according to actual practice, but is not limited in the present disclosure), the slice-based cell reselection first Excellent Determine that the previous frequency is the preferred access frequency for the serving slice (group), and if not, perform slice-based cell reselection. Excellent It is determined that the previous frequency is not the preferred access frequency for the service slice (group).

[0103] (2) Slice-based cell reselection 1 Excellent The previous frequency does not support service slices (groups) that start at the beginning.

[0104] Step 3. If the UE does not need to trigger slice-based cell reselection, the UE Slice-based cell reselection 1 Excellent If the UE initiates direct random access on the first frequency and needs to trigger slice-based cell reselection, it triggers cell reselection between slice (group) frequencies and selects a suitable cell on a high-priority frequency that supports the currently triggered service slice (group), e.g., the first No Se Reselect to the rule.

[0105] Step 4. Currently triggered service slice (group) during inter-frequency reselection If no frequency supporting the trigger slice remapping mechanism is found, the UE determines whether to support the trigger slice remapping mechanism based on the instructions of the network side.

[0106] If supported, remap the currently triggered service slice (group) to a supported new service slice (group) based on the slice (group) remapping policy configured on the network side, and further, locate a suitable cell, e.g., a second cell, on a high-priority frequency that supports the new service slice (group). No Se can be reselected to the rule.

[0107] Step 5. Initiate random access in a suitable cell on a high priority frequency.

[0108] Next, functions and parameter configurations according to the embodiment of the present disclosure will be described.

[0109] 1. Ability to trigger slice-based cell reselection when starting a UE service.

[0110] The function of triggering slice-based cell reselection when a UE initiates a service is a selectable function and can be configured by the network side via system messages or RRC dedicated signaling.

[0111] (1) The network side configures the first signaling through a system message or RRC dedicated signaling, and the network side is the 1 signaling to indicate whether the UE supports triggering slice-based cell reselection when initiating a service.

[0112] (2) The first information element may be a UE-level configuration indicating whether the UE supports triggering slice (group)-based cell reselection when starting a service, or may be a slice (group)-level configuration, i.e., indicating whether the UE supports triggering slice-based cell reselection when starting a specific service slice (group) (e.g., a first specific slice).

[0113] (3) If the network side does not indicate the first information element, it is not supported by default.

[0114] 2. Configuration of cell reselection and initial access function based on UE slice remapping.

[0115] The cell reselection and initial access function based on slice remapping by the UE is an optional function and can be configured by the network side through system messages or RRC dedicated signaling.

[0116] (1) On the network side 、U A second information element is configured to indicate whether cell reselection or initial access based on slice remapping of E is supported.

[0117] (2) The second information element may be a UE-level configuration, i.e., indicating whether the UE supports triggering cell reselection or initial access based on slice remapping, or may be a slice (group)-level configuration, i.e., indicating whether the UE supports triggering cell reselection or initial access based on slice remapping for a specific service slice (group).

[0118] (3) If the network side does not indicate the second information element, it is not supported by default.

[0119] 3. Network-side access control for cell reselection and initial access based on UE slice remapping may include, but is not limited to, the following methods: (1) Method 1: The network side indicates whether to support cell reselection and initial access based on slice remapping for the UE, and the UE makes a decision based on the indication. The network side can broadcast in a system message whether to support cell reselection or access based on slice remapping for the UE. If no indication is given, it is not supported by default. Reselect Or if an initial access is triggered, the selected high priority frequency is reselected based on slice remapping or First If the frequency does not support access, it cannot be selected.

[0120] (2) Method 2: For initial access scenarios, the UE can instruct the UE that slice remapping has been performed during random access (e.g., msg3 for 4-step random access or msgA for 2-step random access), and after receiving the instruction, the network side can choose to accept or reject the UE's access request.

[0121] Next, the cell reselection and First Although some specific examples of access scenarios are provided for illustration, the present disclosure is not limited thereto.

[0122] (1) Selection of resident frequency (high priority frequency) when supporting multiple service slices for a UE.

[0123] Example 1.1: The UE is All network interfaces that a user device is allowed to access Su (Group) A set of candidate frequencies that support the service can be found.

[0124] Assuming that the service slices desired by the UE are slice 1 and slice 2, the slice-based cell reselection frequency priority and conventional frequency priority are shown in Table 1.

[0125] [Table 1]

[0126] In the above Table 1, the priority of slice 1, i.e., the slice cell reselection frequency priority at each frequency of slice 1, the priority of slice 2, i.e., the slice cell reselection frequency priority at each frequency of slice 2, and the conventional priority, i.e., the cell reselection frequency priority corresponding to each frequency are shown.

[0127] (1) The UE first determines a candidate frequency set and selects frequencies f1, f2, and f3 that support all desired service slices of the UE as the candidate frequency set.

[0128] (2) To determine the high priority frequency, one of the following methods may be adopted: Method 1: Select the frequency with the highest slice-based frequency priority. The priorities of f1 and f2 for slice 1 are 6, which is the highest value in the table, so f1 and f2 are determined to be high-priority frequencies. Furthermore, based on the cell reselection frequency priority, i.e., the value of the conventional priority, f1 is 4, which is higher than the 3 corresponding to f2, so finally, f1 is determined to be the high-priority frequency.

[0129] Method 2: Weighting calculation selection. Based on the network configuration or UE's independent decision, the slice priority weight value of slice 1 is 0.7, and the slice priority weight value of slice 2 is 0.8. Assuming that is 0.3, after the weighting calculation, the weighted slice corresponding to f1 is The cell reselection frequency priority is 6*0.7+3*0.3=5.1, the weighting scale corresponding to f2 The frequency priority of the reselected cell is 6*0.7+5*0.3=5.7, the weighting corresponding to f3. The slice cell reselection frequency priority is 5*0.7+4*0.3=4.7. Ultimately, f2 is determined to be the high priority frequency.

[0130] Method 3: Slice 1 is URLLC (Ultra Reliable Low Latency) y Communication, ultra-reliable low-latency communication) service, but It is assumed that slice 2 is an eMBB (Enhanced Mobile Broadband) service, and is a commonly used service for the UE, rather than the service described above.

[0131] In an embodiment of the present disclosure, high-priority frequencies f1 and f2 corresponding to slice 1 (URLLC service) are selected based on delay requirements, and f1 is further determined as the final high-priority frequency based on the cell reselection frequency priority 3 where the cell reselection frequency priority 4 of f1 is greater than f2.

[0132] Depending on whether it is triggered frequently, the high-priority frequency f2 corresponding to slice 2 (eMBB service) is selected as the final high-priority frequency.

[0133] Example 1.2: A UE selects a set of candidate frequencies that support a desired service slice for some of its Find only the

[0134] Assuming that the service slices desired by the UE are slice 1, slice 2, and slice 3, the slice-based cell reselection frequency priority and conventional frequency priority are shown in Table 2.

[0135] [Table 2]

[0136] (1) The UE first determines a candidate frequency set and selects a candidate frequency set that satisfies certain conditions based on a selection policy for the candidate frequency set configured by the network or determined autonomously by the UE. user A portion of the network slice (group) that the device is allowed to access The frequencies that support the IEEE 802.11 standard are selected as the candidate frequency set.

[0137] Method 1: When selecting the one that supports the largest number of slices, select f1, f2, and f3 (each supporting two slices) as the candidate frequency set.

[0138] Method 2: Assuming the first threshold of the number of slices to support is 1, select f1, f2, f3, f4 as the set of candidate frequencies.

[0139] Method 3: Slice priority weight value of slice 1 is 0.6, and slice priority weight of slice 2 is 0.7. The slice priority weight value of f1 is 0.3, and the slice priority weight value of slice 3 is 0.1. After the weighting calculation, the slice priority cumulative weight value of f1 is 0.6+0.3=0.9, and the slice priority cumulative weight value of f2 is 0.6+0.3=0.9. The value of f1 is 0.6+0.1=0.7, and the slice priority integrated weight value of f3 is 0.6+0.3=0.9, and finally, f1 and f3 are selected as a frequency candidate set based on the magnitude of the slice priority integrated weight value.

[0140] Method 4: Assume that slice 1 is URLLC service 1 and is in regular use, slice 2 is URLLC service 2 and is not in regular use, and slice 3 is eMBB service and is in regular use. According to the delay requirement, frequencies f1 and f3 supporting slice 1 and slice 2 can be selected as the candidate frequency set, and frequency f2 supporting slice 1 and slice 3 can be selected as the candidate frequency set according to whether it is in regular use.

[0141] (2) Determine high priority frequencies.

[0142] Since this is the same as Example 1, the explanation will be omitted here.

[0143] Example 1.3: A UE can find candidate frequencies that support its desired service slice. If this is not possible, the service slice is mapped to a new service slice based on the slice remapping policy configured on the network side.

[0144] Assume that the service slice desired by the UE is slice 3, and as shown in Table 3, the UE cannot find a candidate frequency that supports slice 3 within the current region.

[0145] [Table 3]

[0146] In this case, if a slice remapping function is located on the network side and slice 3 can be mapped to slice 2 based on the slice remapping policy, the UE selects f1, f2, and f3 that support slice 2 as a candidate frequency set, and further determines f3 as a high-priority frequency based on the slice-based cell reselection frequency priority and the conventional frequency priority.

[0147] (2) Fast access based on slices when starting a UE service.

[0148] The UE's desired serving slices are slice 1, slice 2, slice 3, and slice 4, and the slice-based cell reselection Excellent The first frequency is f1, and the cell reselection frequency priority configuration is shown in Table 4.

[0149] [Table 4]

[0150] Example 2.1: Slice-based cell reselection 1 Excellent The first frequency is determined by the service status that the UE initiates. Rice's preferred access frequency.

[0151] The UE's preferred access frequency determination policy assumes that the slice-based frequency priority value is greater than or equal to 3. When the UE starts the service of slice 2, f1 is 3 for the frequency priority of slice 2, and f1 meets the preferred access frequency requirement, so the UE can directly start the service of slice 2 in the appropriate resident cell and does not need to trigger cell reselection.

[0152] Example 2.2: Slice-based cell reselection 1 Excellent The first frequency is determined by the service status that the UE initiates. Not Rice's preferred access frequency.

[0153] The UE's preferred access frequency decision policy is slice-based cell reselection first. Excellent Assume that the first frequency is the high-priority frequency of the slice (group) of service to be started. When the UE starts service in slice 2, the first slice-based cell reselection is performed. Excellent The previous frequency f1 does not meet the preferred access frequency requirement, and the UE must retry one cell retransmission. A selection must be triggered, and the high priority frequency f4 supporting slice 2 is reselected and access initiated.

[0154] Example 2.3: Slice-based cell reselection 1 Excellent The frequency of the first frequency is the frequency of the service that the UE initiates. Does not support slicing.

[0155] When the UE starts service in slice 3, slice-based cell reselection Excellent Since the priority frequency f1 does not support that serving slice, the UE needs to trigger one cell reselection to reselect to the high priority frequency f2 that supports slice 3 to initiate access.

[0156] Example 2.4: The UE does not find a frequency that supports the start of the service slice and Triggers cell reselection and initial access based on packet remapping.

[0157] When the UE starts the service in slice 4, the first slice-based cell reselection Excellent The previous frequency f1 does not support the service slice, so the UE triggers a cell reselection. During the reselection, the UE does not find a frequency that supports slice 4. If the UE is configured with a slice remapping function, it remaps slice 4 to slice 2 according to the slice remapping policy. The UE performs a cell reselection to slice 2, selects frequency f3 that supports slice remapping access, and initiates access.

[0158] The slice-based cell reselection method in the embodiment of the present disclosure includes: User device access The network slice (group) where access is permitted By determining User -Network slice (group) to which the device is allowed access Obtain a first candidate frequency that supports the above, obtain a slice cell reselection frequency priority and a cell reselection frequency priority for each first candidate frequency, and then refer to the cell reselection frequency priority of each first candidate frequency based on the slice cell reselection frequency priority (i.e., the frequency priority information of the slice (group)), and the UE performs a cell reselection first based on the slice. Excellent determining a first frequency, and further performing a cell reselection first based on the slice; Excellent Cell reselection based on user device slice prior to frequency selection Excellent Cell reselection based on slice first Excellent The present invention provides a method for selecting a suitable cell as a suitable resident cell in a first frequency, so that the user device can reside in a suitable resident cell, thereby solving the problem of selecting frequency priority for cell reselection based on slices, and in particular, when the UE supports multiple slice services, the method provides a method for selecting a suitable cell as a suitable resident cell in a first frequency, so that the user device can reside in a suitable resident cell. Excellent This can help to rationally select the initial frequency, which can subsequently better realize high-speed access based on slices (groups).

[0159] The method provided by the embodiments of the present disclosure proposes a slice-based cell reselection and access method for a UE cell reselection process, particularly for scenarios in which a UE supports multiple service slices, for 5G and subsequent evolution systems. It designs a slice-based frequency priority selection policy for a wireless slice extension scenario, a selection policy for a set of preferred access candidate frequencies, and a frequency priority selection policy through a multi-level step-by-step screening method, and further refines the frequency priority selection policy, thereby enabling the UE to more reasonably select and reside on high-priority frequencies and cells and better realize fast slice-based access. This solves the problem in the prior art of triggering the UE to access and reselect another cell by switching or redirecting when the UE accesses a cell that does not support the current slice service, which results in additional delay. A service-based policy for triggering cell reselection is also designed, which helps the UE determine whether to trigger cell reselection when the UE initiates a service and assists the UE in selecting an appropriate frequency access. Furthermore, to address the fairness issue of slice remapping, the embodiments of the present disclosure propose a slice remapping-based cell reselection and initial access method / mechanism to ensure fairness among different users of the same type of service. Guarantees and provides users with fairer differentiated wireless resources and services.

[0160] In the embodiment of the present disclosure, possible application scenes include, but are not limited to, the following scenes:

[0161] 1.5G and future evolution of the system, wireless 5G network slicing technology We will solve the limitations on the side and achieve the goal of providing users with differentiated and reliable service quality guarantees.

[0162] 2.3GPP has started to focus on enhancing wireless side slice technology from the R17 stage, mainly focusing on UE It will solve issues such as high-speed access and service continuity assurance, and as discussions deepen, more enhancement directions and application scenarios will be identified in the future.

[0163] 3. We propose a slice-based cell reselection and initial access method, and combine the existing discussions. This will further uncover potential issues, design solutions, and provide a blueprint for the further development of wireless side slicing technology.

[0164] 5 shows a block diagram of a user device according to an embodiment of the present disclosure. As shown in FIG. 5, the user device 500 according to the embodiment of the present disclosure includes a slice cell reselection information acquisition unit 510, a first Excellent It may include a first frequency determination unit 520 and a suitable resident cell determination unit 530 .

[0165] Here, the slice cell reselection information obtaining unit 510 is configured to obtain network slice information and slice-based cell reselection information. Excellent The first frequency determination unit 520 performs a slice-based cell reselection first process according to the network slice information and the slice-based cell reselection information. Excellent The appropriate resident cell determination unit 530 is configured to determine the first frequency of the cell reselection based on the slice. Excellent Cell reselection is performed on the first frequency, and the first cell reselection based on the slice Excellent The mobile station is configured to determine a suitable resident cell on the desired frequency.

[0166] In an exemplary embodiment, the first Excellent The first frequency determination unit 520 determines the first candidate frequency for cell reselection and the first candidate frequency for cell reselection. Excellent Advanced frequency selection unit and cell reselection unit Excellentand a first candidate frequency determination unit, wherein the cell reselection first candidate frequency determination unit is configured to determine a slice-based cell reselection first candidate frequency according to the network slice information and the slice-based cell reselection information, and Excellent and a first frequency selection unit, when the slice-based cell reselection first candidate frequency determined by the user device is a single frequency, selecting the slice-based cell reselection first candidate frequency as the slice-based cell reselection first candidate frequency. Excellent configured to select the frequency as the first frequency in the cell reselection Excellent and a first frequency determination unit, when the slice-based cell reselection first candidate frequency determined by the user device is a plurality of frequencies, determining the slice-based cell reselection first candidate frequency from the plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information. Excellent The system is configured to determine the frequency.

[0167] In an exemplary embodiment, the network slice information may include a network slice identifier to which the user device is permitted to access and a corresponding network slice priority, and the slice-based cell reselection information may include a network slice or slice group identifier supported at different frequencies and a corresponding slice cell reselection frequency priority, and the network slice corresponding to the network slice identifier to which the user device is permitted to access is User device access Allowed network slices (groups) is.

[0168] In an exemplary embodiment, the cell reselection first candidate frequency determination unit may include a first candidate frequency determination subunit, a second candidate frequency determination subunit, and a third candidate frequency determination subunit, wherein the first candidate frequency determination subunit: User Device All network slices (groups) that are allowed access to If a frequency exists that supports All network slices that a user device is allowed to access (group)The second candidate frequency determination subunit is configured to determine a frequency supporting the slice as a first candidate frequency for cell reselection based on the slice, and User device access All network slices (groups) where access is allowed If no frequency supports A portion of the network slice (global slice) where user devices are allowed access loop) a third candidate frequency determination subunit configured to select a frequency supporting the slice-based cell reselection as a first candidate frequency; User Device The network slice (group) to which the user is allowed access. If there is no frequency that supports the above and it is confirmed that the slice remapping function is configured in the user device, The network slice (group) that the user device is allowed to access and selecting a frequency supporting the remapping slice as a first candidate frequency for cell reselection based on the slice.

[0169] In an exemplary embodiment, the second candidate frequency determination subunit User Device Network slice (group) to which access is permitted Selecting a frequency that supports the largest number of the above as a first candidate frequency for cell reselection based on the slice, or You The network slice (group) that the user device is allowed to access. Selecting a frequency having a number of supporting frequencies greater than a first threshold as a first candidate frequency for cell reselection based on the slice, or Each network slice (group) that a user device is allowed to access loop) Depending on the network slice priority, User device access is allowed. Network slices (groups) the slice priority weight value that supports the slice priority, obtain a slice priority accumulated weight value according to the slice priority weight value, and select a frequency with the highest slice priority accumulated weight value as a first candidate frequency for cell reselection based on the slice, or select a frequency with the slice priority accumulated weight value that exceeds a second threshold as a first candidate frequency for cell reselection based on the slice.

[0170] In an exemplary embodiment, the cell reselection first candidate frequency determination unit: User Device Each network slice (group) that is allowed access Determine the service type of Each network slice (group) that a user device is allowed to access Depending on the service trigger frequency for Each network that the user device is allowed to access Work Slice (Group) Determine the service usage level for the service, and if the service usage level is equal to or greater than the service usage level threshold, The networks to which said user device is permitted access Slice (Group) Selecting a frequency that supports the slice-based cell reselection first candidate frequency, or Each network that the user device is allowed to access Slice (Group) Depending on the service type, The user device is not permitted to access Each network slice (group) allowed Determine the service access delay requirement of the service access delay threshold. User device access The network slice (group) where access is permitted is configured to select a frequency supporting the slice-based cell reselection first candidate frequency.

[0171] In an exemplary embodiment, the first cell reselection Excellent The first frequency determination unit determines a slice-based cell reselection first candidate frequency having the highest slice cell reselection frequency priority as the slice-based cell reselection first candidate frequency. Excellent The first slice is selected as the first frequency, and the second slice is selected as the first cell reselection frequency based on the slice determined according to the highest slice cell reselection frequency priority. Excellent If there is more than one candidate frequency, the first candidate frequency for cell reselection based on the slice with the highest cell reselection frequency priority is selected as the first candidate frequency for cell reselection based on the slice. Excellent The frequency is configured to be selected as the first frequency.

[0172] In an exemplary embodiment, the first cell reselection Excellent The advanced frequency determination unit is The user Each network slice (group) that the device is allowed to access Get the network slice priority of Each network that the user device is permitted to access Rice (Group) determining slice priority weight values ​​for Access to said user device Each network slice (group) is allowedand a slice-based cell reselection frequency priority of each slice-based cell reselection first candidate frequency according to the slice priority weight value of the slice-based cell reselection frequency priority of each slice-based cell reselection first candidate frequency. The slice-based cell reselection first candidate frequency having the highest weighted slice cell reselection frequency priority is selected as the slice-based cell reselection first candidate frequency. Excellent The first cell reselection is performed based on the slice determined according to the cell reselection frequency priority. Excellent When there are more than one priority frequency, the slice-based cell reselection first candidate frequency having the highest cell reselection frequency priority is selected as the slice-based cell reselection first priority frequency.

[0173] In an exemplary embodiment, the first cell reselection Excellent The advanced frequency determination unit is The user Each network slice (group) that the device is allowed to access and determining a service type of the user device. Each network that the user device is permitted to access Work Slices (Groups) According to the service trigger frequency for the user device, Each network slice (group) that the user device is allowed to access ) Determine the service usage level for the service, and if the service usage level is equal to or greater than the service usage level threshold, A network slice (group) to which the user device is permitted access The slice-based cell reselection first candidate frequency having the highest slice cell reselection frequency priority in the slice-based cell reselection first candidate frequency is selected as the slice-based cell reselection first candidate frequency. Excellent Select as the first frequency, or Each network slice (group) to which the user device is permitted access Depending on the service type each network to which said user device is permitted to access; Kuss Rice (Group) Determine the service access delay requirement of the service access delay threshold. The user device is granted access Network Slice (Group) The slice-based cell reselection first candidate frequency having the highest slice cell reselection frequency priority in the slice-based cell reselection first candidate frequency is selected as the slice-based cell reselection first candidate frequency. Excellent The frequency is configured to be selected as the first frequency.

[0174] In the exemplary embodiment, the user device 500 further includes a support cell reselection determination unit, a requirement cell reselection determination unit, a second candidate frequency selection unit, and a second candidate frequency selection unit. Excellent First frequency selection unit and second Excellent Advanced frequency selection unit and first No Se a supporting cell reselection decision unit, wherein the supporting cell reselection decision unit determines whether the user device is a first No. The first candidate frequency selection unit is configured to determine that the user device supports triggering slice-based cell reselection when starting a service for the slice, and the requirement cell reselection determination unit is configured to confirm that the user device needs to trigger slice-based cell reselection. No. configured to select a frequency supporting the slice as a second candidate frequency for slice-based cell reselection; Excellent The first frequency selection unit No. Rice slice cell reselection Cell reselection based on slice with frequency priority Cell reselection based on slice with second candidate frequency Excellent configured to select as the first frequency, Excellent The first frequency selection unit No. Rice slice cell reselection Cell reselection based on slice determined according to frequency priority Second Excellent If there is more than one candidate frequency, the slice-based cell reselection second candidate frequency with the highest cell reselection frequency priority is selected as the slice-based cell reselection second candidate frequency. Excellent configured to select as a first frequency; No Se a cell reselection unit for reselecting a second cell based on the slice from the appropriate resident cell of the user device; Excellent First on the previous frequency No Se Reselect to the first No Se It is configured to initiate random access in the

[0175] In an exemplary embodiment, the support cell reselection determination unit determines that the user device supports triggering slice-based cell reselection when starting a service if the user device receives a first information element from a network device, and the first information element indicates that the user device supports triggering slice-based cell reselection when starting a service, or if the first information element indicates that the user device supports triggering slice-based cell reselection when starting a service of a first specific slice, and the first specific slice is the first specific slice. No. If the slice is included, the user device is configured to determine that it supports triggering slice-based cell reselection when initiating service.

[0176] In an exemplary embodiment, user device 500 may further include a non-supporting cell reselection determination unit and a suitable resident cell access unit, where the non-supporting cell reselection determination unit is configured to determine whether or not the first information element indicates that the user device does not support triggering slice-based cell reselection when initiating service, or whether or not the first information element indicates that the user device does not support triggering slice-based cell reselection when initiating service for the specific slice, or whether or not the first information element indicates that the user device supports triggering slice-based cell reselection when initiating service for a first specific slice, and the first specific slice is the first resident cell access unit. No.If the slice does not include a slice or if the user device does not receive the first information element from the network device, the user device is configured to determine that the user device does not support triggering slice-based cell reselection when initiating a service. The appropriate resident cell access unit is configured to cause the user device to initiate random access in the appropriate resident cell if it determines that the user device does not support triggering slice-based cell reselection when initiating a service.

[0177] In an exemplary embodiment, the requirement cell reselection determination unit is configured to determine a cell reselection first decision based on the slice. Excellent The first frequency No. If slice is not supported, or if cell reselection based on the slice is Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency corresponding to the No. If the slice cell reselection frequency priority of the slice is less than the priority threshold, or if the slice-based cell reselection frequency priority is less than the priority threshold, Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency No. rice Excellent If not, the user device is configured to determine that slice-based cell reselection needs to be triggered.

[0178] In an exemplary embodiment, the user device 500 includes a non-needed cell reselection decision unit and a first Excellent and a first frequency access unit, wherein the non-essential cell reselection decision unit is configured to determine the first cell reselection based on the slice. Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency corresponding to the No.If the slice cell reselection frequency priority of the slice is greater than the priority threshold, or if the slice-based cell reselection frequency priority is greater than the priority threshold, Excellent The first frequency No. Supports slices and cell reselection based on the slice first Excellent The first frequency No. rice Excellent If the first frequency is the first frequency, the user device is configured to confirm that slice-based cell reselection does not need to be triggered. Excellent If the first frequency access unit determines that the user device does not need to trigger a slice-based cell reselection, the first frequency access unit determines that the user device does not need to trigger a slice-based cell reselection. No. Rice service is configured to start.

[0179] In an exemplary embodiment, the user device 500 further includes a second No. a Rice remapping unit, a third priority frequency selection unit, and a second No Se and a second access unit. No. The Rice remapping unit No. If there is no frequency that supports Rice, No. Rice 2 No. Rice is configured to remap to the third Excellent The first frequency selection unit No. From frequencies that support slice remapping access, to frequencies that support slice-based cell reselection. Excellent configured to select as the first frequency, No Se and a cell access unit for allowing the user device to perform a cell reselection from the suitable resident cell based on the slice. Excellent Second at the previous frequency No Se Reselect to the second No Se It is configured to initiate random access in the

[0180] In an exemplary embodiment, the second No.The slice remapping unit determines that the user device supports the slice remapping function when the user device receives a second information element from a network device, and the second information element indicates that the user device supports triggering cell reselection and initial access based on slice remapping, or when the second information element indicates that the user device supports triggering cell reselection and initial access based on slice remapping for a service of a second specific slice, and the second specific slice is the first specific slice. No. If the first slice includes a slice, determining that the user device supports a slice remapping function; No. Rice 2 No. It is configured to remap to Rice.

[0181] In an exemplary embodiment, user device 500 may further include an unsupported slice remapping determination unit and a current random access unit, where the unsupported slice remapping determination unit determines whether the second information element indicates that the user device does not support triggering cell reselection or initial access based on slice remapping, or whether the second information element indicates that the user device does not support triggering cell reselection or initial access based on slice remapping for the service of the second specific slice, or whether the second information element indicates that the user device supports triggering cell reselection or initial access based on slice remapping for the service of the second specific slice and the second specific slice is the first specific slice. No.If the slice remapping function does not include the slice or if the user device has not received the second information element from the network device, the current random access unit is configured to determine that the user device does not support the slice remapping function. If the current random access unit determines that the user device does not support the slice remapping function, the user device initiates random access in the appropriate resident cell.

[0182] In an exemplary embodiment, the second No Se The user device may access the second No Se In the process of initiating random access in a user device, an access request is sent to a network device, and a slice remapping instruction is carried in the access request, so that the network device selects to accept or reject the access request of the user device according to the slice remapping instruction.

[0183] The specific implementation of each unit in the user device in the embodiment of the present disclosure may refer to the content of the slice-based cell reselection method described above, and will not be further described here.

[0184]

[0033] Referring now to Figure 6, a structural schematic diagram of an electronic device suitable for implementing embodiments of the present disclosure is shown. The electronic device shown in Figure 6 is merely an example and does not impose any limitations on the functionality and scope of use of embodiments of the present disclosure. The electronic device in Figure 6 may be, for example, a user device and / or a network device, but the present disclosure is not limited thereto.

[0185] Referring to FIG. 6, an electronic device in an embodiment of the present disclosure may include a processor 101, a communication interface 102, a memory 103, and a communication bus 104.

[0186] The processor 101 , the communication interface 102 , and the memory 103 complete communication among themselves via a communication bus 104 .

[0187] Optionally, the communication interface 102 is a GSM (Global System for Mobile Communications) The interface may be a communication module interface such as a mobile communications module interface. The processor 101 is used to execute programs. The memory 103 is for storing the programs. The programs may include computer programs that include computer operation instructions.

[0188] The processor 101 may be a central processor CPU or an application specific integrated circuit ASIC (Application Specific Integrated Circuit). or one or more integrated circuits configured to implement embodiments of the present disclosure.

[0189] The memory 103 may include high-speed RAM (random access memory) memory, or may include non-volatile memory. emory), for example at least one disk memory.

[0190] Here, the program The user device is authorized to access Network slice (group) Determine The user device is allowed to access Network slices (groups) to be used and obtaining a first candidate frequency supporting the slice cell reselection frequency priority and a cell reselection frequency priority for each of the first candidate frequencies, and performing a slice-based cell reselection first process according to the slice cell reselection frequency priority and the cell reselection frequency priority for each of the first candidate frequencies. Priority of determining a frequency and performing cell reselection based on the slice; Excellent A cell reselection method for a first frequency based on a slice of the user device. Excellent a first cell reselection based on the slice of the user device; Excellent Determine the appropriate resident cell on the desired frequency.

[0191] Although the above detailed description refers to several units of an apparatus for performing operations, such division is not mandatory. In fact, according to embodiments of the present disclosure, features and functions of two or more of the above-described units may be embodied in one unit. Conversely, features and functions of one of the above-described units may be further divided and embodied in multiple units.

[0192] From the above description of the embodiments, it is easy for those skilled in the art to understand that the exemplary embodiments described herein can be realized by software, or by combining necessary hardware with software. Therefore, the technical aspects according to the embodiments of the present disclosure may be embodied in the form of a software product that may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB disk, a mobile hard disk, etc.) and includes several instructions for performing the methods according to the embodiments of the present disclosure.

[0193] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure in accordance with the general principles of the present disclosure, including common knowledge or customary technical means known in the art but not disclosed herein. The specification and embodiments are to be considered exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0194] It should be understood that the present disclosure is not limited to the exact construction described above and shown in the drawings, but that various modifications and variations are possible without departing from the scope thereof, which is limited only by the appended claims.

Claims

1. A slice-based cell reselection method performed by a user device, Obtaining network slice information and slice-based cell reselection information; determining a slice-based cell reselection first priority frequency according to the network slice information and the slice-based cell reselection information; performing cell reselection at the slice-based cell reselection first priority frequency and determining a suitable resident cell at the slice-based cell reselection first priority frequency; Determining the slice-based cell reselection first priority frequency in accordance with the network slice information and the slice-based cell reselection information includes: determining a slice-based cell reselection first candidate frequency according to the network slice information and the slice-based cell reselection information; When determining that the slice-based cell reselection first candidate frequencies determined by the user device include a plurality of first candidate frequencies, determining a slice-based cell reselection first priority frequency from the plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information; Determining a slice-based cell reselection first priority frequency from a plurality of slice-based cell reselection first candidate frequencies in accordance with the network slice information and the slice-based cell reselection information includes: Obtaining a network slice priority of each network slice to which the user device is permitted to access, and determining a slice priority weight value of each network slice to which the user device is permitted to access; Obtaining a weighted slice cell reselection frequency priority for each slice-based cell reselection first candidate frequency according to a slice priority weight value of each network slice to which the user device is allowed to access and a slice cell reselection frequency priority for each slice-based cell reselection first candidate frequency; selecting a slice-based cell reselection first candidate frequency having the highest weighted slice cell reselection frequency priority as the slice-based cell reselection first priority frequency; and when determining that there are more than one slice-based cell reselection first priority frequencies determined according to the highest weighted slice cell reselection frequency priority, selecting a slice-based cell reselection first candidate frequency having the highest cell reselection frequency priority as the slice-based cell reselection first priority frequency. A slice-based cell reselection method, comprising:

2. Determining the slice-based cell reselection first priority frequency according to the network slice information and the slice-based cell reselection information further includes: if determining that the slice-based cell reselection first candidate frequency determined by the user device includes a single frequency, selecting the slice-based cell reselection first candidate frequency as the slice-based cell reselection first priority frequency; Contains The slice-based cell reselection method according to claim 1 .

3. The network slice information includes a network slice or slice group identifier to which the user device is permitted to access and a corresponding network slice priority, and the slice-based cell reselection information includes a network slice or slice group identifier supported in a corresponding frequency and a corresponding slice cell reselection frequency priority. The slice-based cell reselection method according to claim 2 .

4. Determining a slice-based cell reselection first candidate frequency in accordance with the network slice information and the slice-based cell reselection information includes: If it is determined that a frequency supporting all network slices to which the user device is permitted to access exists, setting the frequency supporting all network slices to which the user device is permitted to access as a first candidate frequency for cell reselection based on the slice; When determining that there is no frequency supporting all of the network slices to which the user device is permitted to access, selecting a frequency supporting some of the network slices to which the user device is permitted to access as a first candidate frequency for cell reselection based on the slice; and when it is determined that there is no frequency supporting a network slice to which the user device is permitted to access and a slice remapping function is configured for the user device, determining a remapping slice of the network slice to which the user device is permitted to access, and selecting a frequency supporting the remapping slice as a first candidate frequency for cell reselection based on the slice. The slice-based cell reselection method according to claim 3 .

5. Selecting a frequency supporting a portion of a network slice to which the user device is allowed to access as a first candidate frequency for cell reselection based on the slice, selecting a frequency that supports the largest number of network slices to which the user device is allowed access as a first candidate frequency for slice-based cell reselection; selecting a frequency, the number of which supports a network slice to which the user device is allowed to access, exceeding a first threshold, as a first candidate frequency for slice-based cell reselection; Determine a slice priority weight value supporting the network slice to which the user device is allowed to access according to the network slice priority of each network slice to which the user device is allowed to access, obtain a slice priority accumulation weight value according to the slice priority weight value, and select a frequency with the highest slice priority accumulation weight value as a first candidate frequency for cell reselection based on the slice; or selecting a frequency having a slice priority accumulated weighted value exceeding a second threshold as a first candidate frequency for cell reselection based on the slice. The slice-based cell reselection method according to claim 4 .

6. Determining the slice-based cell reselection first candidate frequency in accordance with the network slice information and the slice-based cell reselection information includes: determining a service type of each network slice to which the user device is permitted to access; The user device determines a service usage for each network slice to which the user device is permitted to access according to a service trigger frequency for the network slice to which the user device is permitted to access, and selects a frequency supporting a network slice to which the user device is permitted to access, the network slice having a service usage equal to or greater than a service usage level threshold, as a first candidate frequency for cell reselection based on the slice; or The method includes at least one of: determining a service type of each network slice to which the user device is permitted to access according to a service type of each network slice to which the user device is permitted to access; determining a service access delay requirement of each network slice to which the user device is permitted to access; and selecting a frequency supporting a network slice to which the user device is permitted to access, the service access delay requirement of which is equal to or less than a service access delay threshold, as a first candidate frequency for cell reselection based on the slice. The slice-based cell reselection method according to claim 3 .

7. Determining a slice-based cell reselection first priority frequency from a plurality of slice-based cell reselection first candidate frequencies in accordance with the network slice information and the slice-based cell reselection information includes: selecting a slice-based cell reselection first candidate frequency having the highest slice cell reselection frequency priority as the slice-based cell reselection first priority frequency; and when determining that there is more than one slice-based cell reselection first priority frequency determined according to the highest slice cell reselection frequency priority, selecting a slice-based cell reselection first candidate frequency having the highest cell reselection frequency priority as the slice-based cell reselection first priority frequency. The slice-based cell reselection method according to claim 3 .

8. Determining a slice-based cell reselection first priority frequency from a plurality of slice-based cell reselection first candidate frequencies in accordance with the network slice information and the slice-based cell reselection information includes: determining a service type of each network slice to which the user device is permitted to access; determining a service usage level for each network slice to which the user device is permitted to access in accordance with a service trigger frequency for each network slice to which the user device is permitted to access, and selecting a slice-based cell reselection first candidate frequency having a highest slice cell reselection frequency priority in a network slice to which the user device is permitted to access, the slice-based cell reselection first priority frequency being equal to or greater than a service usage level threshold; or and determining, according to a service type of each network slice to which the user device is permitted to access, a service type of each network slice to which the user device is permitted to access; determining a service access delay requirement of each network slice to which the user device is permitted to access; and selecting, as a slice-based cell reselection first priority frequency, a slice-based cell reselection first candidate frequency having a highest slice cell reselection frequency priority in a network slice to which the user device is permitted to access, the service access delay requirement of which is equal to or less than a service access delay threshold. The slice-based cell reselection method according to claim 1 .

9. The slice-based cell reselection method further comprises: determining, when the user device initiates service for a first slice, that the user device supports triggering slice-based cell reselection when the user device initiates service; determining that the user device needs to trigger slice-based cell reselection; selecting a frequency supporting the first slice as a slice-based cell reselection second candidate frequency; selecting a slice-based cell reselection second candidate frequency having the highest slice cell reselection frequency priority for the first slice as a slice-based cell reselection second priority frequency; When determining that there are more than one slice-based cell reselection second priority frequencies determined according to the highest slice cell reselection frequency priority of the first slice, selecting a slice-based cell reselection second candidate frequency having the highest cell reselection frequency priority as the slice-based cell reselection second priority frequency; and performing cell reselection from the appropriate resident cell to a first cell on a frequency of a second priority based on the slice, and initiating random access in the first cell. The slice-based cell reselection method according to claim 1 .

10. Determining that the user device supports triggering slice-based cell reselection when initiating service includes: If the user device receives a first information element from a network device and determines that the first information element indicates that the user device supports triggering slice-based cell reselection when initiating a service, determining that the user device supports triggering slice-based cell reselection when initiating a service; or indicating in the first information element that the user device supports triggering slice-based cell reselection when starting service for a first specific slice, and if it is determined that the first specific slice includes the first slice, determining that the user device supports triggering slice-based cell reselection when starting service. The slice-based cell reselection method according to claim 9 .

11. The slice-based cell reselection method further comprises: if determining that the first information element indicates that the user device does not support triggering slice-based cell reselection when initiating a service, determining that the user device does not support triggering slice-based cell reselection when initiating a service and initiating random access in the appropriate resident cell; if it is determined that the first information element indicates that the user device does not support triggering slice-based cell reselection when initiating service for the first specific slice, determining that the user device does not support triggering slice-based cell reselection when initiating service and initiating random access in the appropriate resident cell; Indicating in the first information element that the user device supports triggering slice-based cell reselection when starting a service of a first specific slice, and if it is determined that the first specific slice does not include the first slice, determining that the user device does not support triggering slice-based cell reselection when starting a service, and initiating random access in the appropriate resident cell; or If the user device determines that it did not receive the first information element from the network device, determining that the user device does not support triggering slice-based cell reselection when initiating service, and initiating random access in the appropriate resident cell. The slice-based cell reselection method according to claim 10 .

12. Identifying that slice-based cell reselection needs to be triggered is determining that the user device needs to trigger slice-based cell reselection if it determines that the slice-based cell reselection first priority frequency does not support the first slice; determining that the user device needs to trigger slice-based cell reselection when the slice-based cell reselection first priority frequency supports the first slice and a slice cell reselection frequency priority of the first slice corresponding to the slice-based cell reselection first priority frequency is less than a priority threshold; or and determining that the user device needs to trigger slice-based cell reselection if the slice-based cell reselection first priority frequency supports the first slice and the slice-based cell reselection first priority frequency is not the priority frequency of the first slice. The slice-based cell reselection method according to claim 9 .

13. The slice-based cell reselection method further comprises: If it is determined that the slice-based cell reselection first priority frequency supports the first slice and the slice cell reselection frequency priority of the first slice corresponding to the slice-based cell reselection first priority frequency is greater than the priority threshold, confirming that the user device does not need to trigger slice-based cell reselection and starts service of the first slice in the appropriate resident cell; or and when determining that the slice-based cell reselection first priority frequency supports the first slice and that the slice-based cell reselection first priority frequency is the priority frequency of the first slice, confirming that the user device does not need to trigger slice-based cell reselection and starting service of the first slice in the appropriate resident cell. The slice-based cell reselection method according to claim 12 .

14. The slice-based cell reselection method further comprises: if determining that no frequency supporting the first slice exists, remapping the first slice to a second slice; selecting a frequency supporting slice remapping access from the frequencies supporting the second slice as a slice-based cell reselection third priority frequency; and performing cell reselection from the appropriate resident cell to a second cell at a third priority frequency based on the slice, and initiating random access in the second cell. The slice-based cell reselection method according to claim 9 .

15. Remapping the first slice to the second slice includes: If the user device receives a second information element from a network device and determines that the second information element indicates that the user device supports triggering cell reselection and initial access based on slice remapping, the user device supports a slice remapping function and remaps the first slice to the second slice; or If the second information element indicates that the user device supports triggering cell reselection and initial access based on slice remapping for a service of a second specific slice, and the second specific slice is determined to include the first slice, determining that the user device supports the slice remapping function and remapping the first slice to the second slice. The slice-based cell reselection method according to claim 14 .

16. The slice-based cell reselection method further comprises: If the second information element determines that the user device does not support triggering cell reselection or initial access based on slice remapping, determining that the user device does not support the slice remapping function and initiating random access in the appropriate resident cell; if it is determined that the second information element indicates that the user device does not support triggering cell reselection or initial access based on slice remapping for the service of the second specific slice, determining that the user device does not support the slice remapping function and initiating random access in the appropriate resident cell; Indicating in the second information element that the user device supports triggering cell reselection or initial access based on slice remapping for the service of the second specific slice, and determining that the second specific slice does not include the first slice, determining that the user device does not support the slice remapping function and initiating random access in the appropriate resident cell; or if the user device does not receive the second information element from the network device, determining that the user device does not support the slice remapping function and initiating random access in the appropriate resident cell. The slice-based cell reselection method according to claim 15 .

17. Initiating random access in the second cell includes: The step of initiating random access in the second cell includes transmitting an access request to a network device, and a slice remapping instruction being carried in the access request, whereby the network device selects to accept or reject the access request of the user device according to the slice remapping instruction. The slice-based cell reselection method according to claim 14 .

18. 1. An electronic device including one or more processors and a memory device, The storage device stores one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors Obtaining network slice information and slice-based cell reselection information; determining a slice-based cell reselection first priority frequency according to the network slice information and the slice-based cell reselection information; performing cell reselection at the slice-based cell reselection first priority frequency and determining a suitable resident cell at the slice-based cell reselection first priority frequency; Run Determining the slice-based cell reselection first priority frequency in accordance with the network slice information and the slice-based cell reselection information includes: determining a slice-based cell reselection first candidate frequency according to the network slice information and the slice-based cell reselection information; When determining that the slice-based cell reselection first candidate frequencies determined by the user device include a plurality of first candidate frequencies, determining a slice-based cell reselection first priority frequency from the plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information; Determining a slice-based cell reselection first priority frequency from a plurality of slice-based cell reselection first candidate frequencies in accordance with the network slice information and the slice-based cell reselection information includes: Obtaining a network slice priority of each network slice to which the user device is permitted to access, and determining a slice priority weight value of each network slice to which the user device is permitted to access; Obtaining a weighted slice cell reselection frequency priority for each slice-based cell reselection first candidate frequency according to a slice priority weight value of each network slice to which the user device is allowed to access and a slice cell reselection frequency priority for each slice-based cell reselection first candidate frequency; selecting a slice-based cell reselection first candidate frequency having the highest weighted slice cell reselection frequency priority as the slice-based cell reselection first priority frequency; and when determining that there are more than one slice-based cell reselection first priority frequencies determined according to the highest weighted slice cell reselection frequency priority, selecting a slice-based cell reselection first candidate frequency having the highest cell reselection frequency priority as the slice-based cell reselection first priority frequency. An electronic device characterized by:

19. When executed by a processor, Obtaining network slice information and slice-based cell reselection information; determining a slice-based cell reselection first priority frequency according to the network slice information and the slice-based cell reselection information; performing cell reselection at the slice-based cell reselection first priority frequency and determining a suitable resident cell at the slice-based cell reselection first priority frequency; Run Determining the slice-based cell reselection first priority frequency in accordance with the network slice information and the slice-based cell reselection information includes: determining a slice-based cell reselection first candidate frequency according to the network slice information and the slice-based cell reselection information; When determining that the slice-based cell reselection first candidate frequencies determined by the user device include a plurality of first candidate frequencies, determining a slice-based cell reselection first priority frequency from the plurality of slice-based cell reselection first candidate frequencies according to the network slice information and the slice-based cell reselection information; Determining a slice-based cell reselection first priority frequency from a plurality of slice-based cell reselection first candidate frequencies in accordance with the network slice information and the slice-based cell reselection information includes: Obtaining a network slice priority of each network slice to which the user device is permitted to access, and determining a slice priority weight value of each network slice to which the user device is permitted to access; Obtaining a weighted slice cell reselection frequency priority for each slice-based cell reselection first candidate frequency according to a slice priority weight value of each network slice to which the user device is allowed to access and a slice cell reselection frequency priority for each slice-based cell reselection first candidate frequency; selecting a slice-based cell reselection first candidate frequency having the highest weighted slice cell reselection frequency priority as the slice-based cell reselection first priority frequency; and when determining that there are more than one slice-based cell reselection first priority frequencies determined according to the highest weighted slice cell reselection frequency priority, selecting a slice-based cell reselection first candidate frequency having the highest cell reselection frequency priority as the slice-based cell reselection first priority frequency. A computer program characterized by:

Images