WO2023207825A1

WO2023207825A1 - Communication method and apparatus

Info

Publication number: WO2023207825A1
Application number: PCT/CN2023/090002
Authority: WO
Inventors: 张柔佳; 孙飞; 陈君; 孙海洋
Original assignee: 华为技术有限公司
Priority date: 2022-04-24
Filing date: 2023-04-23
Publication date: 2023-11-02

Abstract

The present application relates to the technical field of communications, and provides a communication method and apparatus, so as to provide a solution for using slice group priority. In a slice group-based cell reselection process, firstly, an access stratum of a terminal device UE AS receives first information from a non-access stratum of the terminal device UE NAS, the first information indicating the priority of a slice group. Then, the UE AS updates the frequency point sequence of a plurality of frequency points on the basis of the priority of the slice group, an updated frequency point sequence being used for performing frequency point measurement and/or optimal cell evaluation in the slice group-based cell reselection process. Next, the UE AS performs the slice group-based cell reselection process on the basis of the updated frequency point sequence. Thus, a method for using slice group priority is provided.

Description

A communication method and device

Cross-references to related applications

This application claims priority to the Chinese patent application submitted to the China Patent Office on April 24, 2022, with application number 202210435762.9 and the application title "A communication method and device", the entire content of which is incorporated into this application by reference; This application claims priority to the Chinese patent application filed with the China Patent Office on June 1, 2022, with application number 202210623168.2 and the application title "A communication method and device", the entire content of which is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to fields such as communication, and in particular, to a communication method and device.

Background technique

With the development of mobile communication technology, various new services and application scenarios continue to emerge, and these services have very different requirements for network functions, connection performance, and security. If a single network is used to carry these services, it will be difficult to meet the requirements of high bandwidth, low latency, and high reliability at the same time. If you build a separate network for each service, it will bring huge costs. This requires the communication network to be flexible and scalable while also being able to meet different business needs.

To this end, it is proposed to provide users with customized network services through end-to-end network slicing. Network slicing can be regarded as a logical subnet, and each network slice is isolated from each other. With the evolution of technology, the concept of slice group has been proposed. A slice group is to group and identify one or more network slices according to rules. Different slice groups can set their corresponding priorities. How the UE uses the slice group priority needs to be considered.

Contents of the invention

Embodiments of the present application provide a communication method and device to provide a solution using slice group priority.

In the first aspect, a communication method is provided. The execution subject of the method may be the access layer of the terminal device, or may be a component applied in the access layer of the terminal device, such as a chip, a processor, etc. The following description takes the access layer whose execution subject is the terminal device as an example. In the cell reselection process based on the slice group, first, the access layer UE AS of the terminal device receives first information from the non-access layer UE NAS of the terminal device, where the first information indicates the priority of the slice group. Then, the UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group. The updated frequency ranking is used to perform frequency point measurement in the cell reselection process based on the slice group. and/or best plot assessment. Next, the UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting.

This example provides a method of using the slice group priority. During the cell reselection process based on the slice group, the UE AS can select the frequency point based on the slice group priority after receiving the new slice group priority from the UE NAS. The ranking is updated, and the cell reselection process is performed based on the updated frequency ranking, which can meet the ideal behavior of the UE in a timely manner.

In a possible implementation, before the UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting, the UE AS may also interrupt the ongoing cell reselection process based on the slice group. Cell reselection process. In this way, when the UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting, the UE AS may continue to perform the interrupted execution based on the updated frequency sorting. The cell weight of the slice group selection process. Interrupting first and then executing can avoid invalid execution processes.

In a possible implementation, the UE AS interrupts the ongoing cell reselection process based on the slice group. For example, it may be that the UE AS is measuring the first frequency point but does not obtain the first frequency point. If the measurement report of the first frequency point is obtained, the UE AS stops measuring the first frequency point; or if the UE AS obtains the measurement report of the first frequency point but does not start to evaluate the best cell, the UE AS stops measuring the best cell. The best cell; or, the UE AS is evaluating the best cell, then the UE AS stops evaluating the best cell; or the UE AS has evaluated the best cell and is camping on the best cell, then the UE AS The UE AS stops camping on the best cell.

In a possible implementation, the UE AS determines that the timer has expired before interrupting the ongoing cell reselection process based on the slice group. Interrupting the current process after the timer times out can reserve a certain update buffer time for the process being executed to improve the continuity of UE behavior.

In a possible implementation, before the UE AS interrupts the ongoing slice group-based cell reselection process, it may also receive second information, the second information indicating to interrupt the ongoing execution of the slice group-based cell reselection process. cell reselection process.

In a possible implementation, before the UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting, it may also determine a plurality of second frequencies corresponding to the updated frequency sorting. Compared with the multiple second frequency points corresponding to the frequency point sorting before the update, the multiple second frequency points include the first frequency point being measured and the sorting is located after the first frequency point. frequency point. Only when a change occurs, the currently executed cell reselection process will be interrupted. If no change occurs, the currently executed cell reselection process will not be interrupted, which can avoid discontinuity in UE behavior.

In a possible implementation, before the UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group, the UE AS may also determine the priority of the slice group indicated by the first information. The priority is higher than the slice group referenced in the cell reselection process based on the slice group. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the cell reselection process, try to select a high-priority slice group to perform cell reselection, which can avoid the need to perform cell reselection. During the process, the cell reselection was interrupted because the priority of the slice group changed.

In the second aspect, a communication method is provided. The execution subject of the method may be the access layer of the terminal device, or may be a component applied in the access layer of the terminal device, such as a chip, a processor, etc. The following description takes the access layer whose execution subject is the terminal device as an example. In the cell reselection process based on the slice group, first, the access layer UE AS of the terminal device receives first information from the non-access layer UE NAS of the terminal device, where the first information indicates the priority of the slice group. Then, the UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group. The updated frequency ranking is used to perform frequency point measurement in the next cell reselection process based on the slice group. and/or best plot assessment. Next, the UE AS performs the cell reselection process based on the slice group based on the frequency point sorting before the update. Further, in the next cell reselection process based on the slice group, the UE AS performs the cell reselection process based on the slice group based on the updated frequency point sorting.

This example provides a method of using slice group priority. During the cell reselection process based on slice group, after the UE AS receives the new slice group priority from the UE NAS, it can first continue based on the frequency sorting before the update. Executing the cell reselection process can ensure the continuity of UE behavior; updating the frequency ranking based on the new slice group priority, and executing the next cell reselection process based on the updated frequency ranking can meet the ideal behavior of the UE.

In a possible implementation, the UE AS performs the slice group-based sorting based on the updated frequency points. Before the cell reselection process, it is also possible to determine a plurality of second frequency points corresponding to the frequency point sorting after the update. Compared with the plurality of second frequency points corresponding to the frequency point sorting before the update, the plurality of second frequency points have not changed; wherein, the plurality of second frequency points correspond to the frequency point sorting before the update. The second frequency points include the first frequency point being measured and frequency points arranged after the first frequency point.

In a possible implementation, before the UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group, the UE AS may also determine the priority of the slice group indicated by the first information. It is lower than the priority of the slice group referenced in the cell reselection process based on the slice group. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the cell reselection process, try to select a high-priority slice group to perform cell reselection, which can avoid the need to perform cell reselection. During the process, the cell reselection is interrupted because the priority of the slice group changes. If the updated priority is lower than the priority of the slice group being referenced, there is no need to update.

In the third aspect, a communication method is provided. The execution subject of the method may be the media access control layer of the terminal device, or may be a component applied in the media access control layer of the terminal device, such as a chip, a processor, etc. . The following description takes the media access control layer whose execution subject is the terminal device as an example. In the random access process based on the slice group, the media access control layer UE MAC of the terminal device receives the first slice group identifier, and the first slice group identifier is used to trigger the random access process based on the slice group; so The UE MAC performs the random access process based on the slice group based on the first slice group identifier.

In the random access process based on the slice group, after receiving the new slice group identifier, the UE MAC can perform the random access process based on the new slice group identifier, which can meet the UE's ideal behavior in a timely manner.

In a possible implementation, before the UE MAC performs the slice group-based random access process based on the first slice group identifier, the UE MAC may interrupt the slice group-based random access process being executed. random access process. Subsequently, when the UE MAC performs the random access process based on the slice group based on the first slice group identifier, the UE MAC may continue to perform the interrupted execution based on the first slice group identifier. The random access process based on slice groups. Interrupting first and then executing can avoid invalid execution processes.

In a possible implementation, when the UE MAC interrupts the random access process based on the slice group that is being executed, for example, the UE MAC completes selecting the random access channel partition RACH Partition, then the UE MAC interrupts initialization. Parameters, the parameters include random access priority RA-Prioritization and/or parameters corresponding to RACH Partition; or, the UE MAC initialization completes the parameters, then the UE MAC interrupts the random access RA resource selection process, the parameters Including parameters corresponding to random access priority RA-Prioritization and/or RACH Partition.

In a possible implementation, before the UE MAC interrupts the ongoing random access process based on the slice group, it may also be determined that the timer has expired. Interrupting the current process after the timer times out can reserve a certain update buffer time for the process being executed to improve the continuity of UE behavior.

In a possible implementation, before the UE MAC receives the first slice group identifier, the third information may also be received, and the third information indicates to interrupt the ongoing random access process based on the slice group.

In a possible implementation, before the UE MAC performs the random access process based on the slice group based on the first slice group identifier, parameters associated with the first slice group identifier may also be determined. , compared with changes in parameters associated with the second slice group identifier referenced by the slice group-based random access process before receiving the first slice group identifier, the parameters include random access channel differentiation RACH Partition and /or random access priority RA-Prioritization. Only when a change occurs, the currently executed random access process will be interrupted. If no change occurs, the currently executed random access process will not be interrupted, which can avoid discontinuity in UE behavior.

In a possible implementation, the UE MAC performs the slice group-based Before the random access process, it may also be determined that the priority corresponding to the first slice group identifier is higher than the priority corresponding to the second slice group identifier referenced by the slice group-based random access process. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the random access process, by trying to select a high-priority slice group to perform random access, you can avoid performing random access. During the process, the random access was interrupted because the priority of the slice group changed.

In the fourth aspect, a communication method is provided. The execution subject of the method may be the media access control layer of the terminal device, or may be a component applied in the media access control layer of the terminal device, such as a chip, a processor, etc. . The following description takes the media access control layer whose execution subject is the terminal device as an example. In the random access process based on the slice group, the media access control layer UE MAC of the terminal device receives the first slice group identifier, and the first slice group identifier is used to trigger the random access process based on the slice group. Then, the UE MAC executes and completes the random access process based on the slice group based on the identity of the currently referenced second slice group. Next, in the next slice group-based random access process, the UE MAC performs a slice group-based random access process based on the received identity of the first slice group.

In the random access process based on the slice group, after receiving the new slice group identifier, the UE MAC first continues to perform the random access process based on the original second slice group, which can ensure the continuity of the UE behavior; and based on the new slice group The first slice group performs the next random access process, which can meet the ideal behavior of the UE.

In a possible implementation, before the UE MAC performs the random access process based on the slice group based on the second slice group identifier, the UE MAC may also first determine the first slice group Whether the parameters associated with the identifier have changed compared with the parameters associated with the second slice group identifier referenced by the slice group-based random access process before receiving the first slice group identifier. If no change has occurred, then based on The second slice group identifier is used to execute the random access process based on the slice group. The parameters include but are not limited to one or more of the following: random access channel differentiation RACH Partition, random access priority RA-Prioritization.

In an optional implementation, after receiving the identifier of the first slice group, the UE MAC may first determine whether the priority corresponding to the first slice group identifier is lower than the random access based on the slice group. Enter the priority corresponding to the second slice group identifier referenced by the process; if so, execute the subsequent process. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the random access process, by trying to select a high-priority slice group to perform random access, you can avoid performing random access. During the process, the random access is interrupted because the priority of the slice group changes. If the updated priority is lower than the priority of the slice group being referenced, there is no need to update.

In a fifth aspect, a communication device is provided, which device has the function of implementing any of the above aspects and any possible implementation of any aspect. These functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more functional modules corresponding to the above functions.

In a sixth aspect, a communication device is provided, including a processor and, optionally, a memory; the processor is coupled to the memory; the memory is used to store computer programs or instructions; the processor, For executing part or all of the computer programs or instructions in the memory, when the part or all of the computer programs or instructions are executed, in a method for implementing any of the above aspects and any possible implementation of any aspect. function.

In a possible implementation, the device may further include a transceiver, and the transceiver is configured to send signals processed by the processor, or receive signals input to the processor. The transceiver may perform transmitting actions or receiving actions in any aspect and any possible implementation of any aspect.

In a seventh aspect, the present application provides a chip system. The chip system includes one or more processors (which may also be referred to as processing circuits), and the processors are electrically coupled to a memory (which may also be referred to as a storage medium). ; The memory may be located in the chip system, or may not be located in the chip system; the memory is used to store computer programs or instructions; the processor is used to execute part or all of the memory Computer programs or instructions, when part or all of the computer programs or instructions are executed, are used to implement the functions in any of the above aspects and any possible implementation method of any aspect.

In a possible implementation, the chip system may also include an input-output interface (which may also be called a communication interface). The input-output interface is used to output signals processed by the processor, or to receive input to the processor. signal to the processor. The input and output interface can perform sending actions or receiving actions in any aspect and any possible implementation of any aspect. Specifically, the output interface performs the sending action, and the input interface performs the receiving action.

In a possible implementation, the chip system may be composed of chips, or may include chips and other discrete devices.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program including instructions for implementing the functions of any aspect and any possible implementation of any aspect.

Alternatively, a computer-readable storage medium is used to store a computer program. When the computer program is executed by a computer, it can cause the computer to perform any of the above aspects and any possible implementation method of any aspect.

In a ninth aspect, a computer program product is provided. The computer program product includes: computer program code. When the computer program code is run on a computer, it causes the computer to execute any of the above aspects and any possibility of any aspect. method in the implementation.

For the technical effects of the above fifth to ninth aspects, reference can be made to the descriptions in the first to fourth aspects, and repeated descriptions will not be repeated.

Description of drawings

Figure 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application;

Figure 1b is a schematic diagram of frequency point sorting update provided by an embodiment of the present application;

Figure 1c is a schematic diagram of frequency point sorting update provided by an embodiment of the present application;

Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12, and Figure 13 are respectively a schematic diagram of a communication process provided by the embodiment of the present application;

Figure 14 is a structural diagram of a communication device provided by an embodiment of the present application;

Figure 15 is a structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as satellite communication systems and traditional mobile communication systems. Among them, the satellite communication system can be integrated with the traditional mobile communication system (ie, terrestrial communication system). Communication systems include: wireless local area network (WLAN) communication system, wireless fidelity (WiFi) system, long term evolution (LTE) system, LTE frequency Frequency division duplex (FDD) system, LTE time division duplex (TDD), fifth generation (5G) system or new radio (NR), sixth generation (6th generation) , 6G) systems, and other future communication systems, also support communication systems integrating multiple wireless technologies. For example, they can also be applied to drones, satellite communication systems, high altitude platform (HAPS) communications, etc. Non-terrestrial network (NTN) is a system that integrates terrestrial mobile communication networks.

In order to facilitate understanding of the embodiments of this application, the application scenarios of this application are introduced next. The network architecture and business scenarios described in the embodiments of this application are to more clearly explain the technical solutions of the embodiments of this application, and do not constitute a requirement for the implementation of this application. With the limitations of the technical solutions provided in the examples, those of ordinary skill in the art will know that with the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

As shown in Figure 1a, a schematic diagram of a communication system architecture suitable for this application is provided, including a terminal equipment part, an access network part and a core network part. The terminal equipment accesses the core network through the access network. Sectors and carrier frequencies form the smallest service unit that provides terminal equipment access to access network equipment, that is, a cell. A cell is an area that provides wireless communication services for terminal devices and is the basic unit of a wireless network. The number of cells supported by the access network equipment is determined by "number of sectors × number of carrier frequencies per sector". For example, in a 3×2 configuration, the entire circular area is divided into 3 sectors for coverage, and each sector uses 2 carrier frequencies, resulting in a total of 6 cells. A sector refers to a wireless coverage area covering a certain geographical area, which is a division of wireless coverage areas. Each sector uses one or more wireless carriers to complete wireless coverage, and each wireless carrier uses a certain carrier frequency. A cell is a logical concept, and access network equipment, sectors, and carrier frequencies are physical concepts and are real. Usually, one access network device corresponds to one cell or multiple cells, and the carrier frequency refers to the usable frequency of the access network device, such as N carriers, N=1, 3, 6, 12....

In order to facilitate understanding of the embodiments of the present application, some terms used in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1) Introduction to related network elements:

Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc., is a device that provides voice and/or data connectivity to users. device of. For example, terminal devices include handheld devices with wireless connection functions, vehicle-mounted devices, ship-mounted devices, etc. Currently, terminal devices can be: mobile phones, tablets, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality ( augmented reality (AR) equipment, wireless terminals (such as sensors, etc.) in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, intelligent Wireless terminals in the power grid (smart grid), wireless terminals in transportation safety (transportation safety), wireless terminals in the smart city (smart city), or wireless terminals in the smart home (smart home), or have vehicle-to-vehicle ( Vehicle-to-Vehicle (V2V), or vehicle to everything (V2X), or vehicle-to-vehicle long-term evolution technology (long term evolution vehicle) wireless terminal with LTE-V function, etc. It can also be a subscriber unit, cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, wireless modem, handset ), laptop computers, machine type communication (MTC) terminals, etc.

(Wireless) access network equipment ((R)AN) is a device that provides wireless communication functions for terminal devices. (R)AN equipment is also called access network equipment. RAN equipment in this application includes but is not limited to: next-generation base station (g nodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (radio network) in 5G controller, RNC), node B (node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc. In systems using different wireless access technologies, the names of equipment with base station functions may be different. For example, in the fifth generation (5G) system, it is called RAN or gNB (5G NodeB); In the LTE system, it is called evolved NodeB (eNB or eNodeB); in the third generation (3rd generation, 3G) system, it is called Node B (Node B), etc.

The access management device (also known as mobility management device, mobility management network element, and access management network element) is a control plane network element provided by the operator's network and is responsible for access control and control of terminal devices accessing the operator's network. Mobility management, for example, includes mobility status management, assigning user temporary identities, authentication and user functions. In the 5G communication system, the access management network element may be an access and mobility management function (AMF) network element. In future communication systems, the access management network element can still be an AMF network element, or it can also have other names, which is not limited in this application.

In addition, the "network element" involved in this application may be called "device", "entity", etc.

2) Slices and slice groups:

The physical network can be abstractly divided into multiple network slices. Each network slice forms an end-to-end logical network, and different network slices are logically isolated. Each network slice can flexibly provide one or more network services according to needs, and has no impact on other network slices.

Network slicing types include enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), and massive internet of things (MIoT). Normally, different network slices have different performance requirements. For example, network slices for augmented reality (AR) services or virtual reality (VR) services require large bandwidth and low latency; the Internet of Things (internet of things) , IoT) service network slicing is required to support massive terminal access, but the bandwidth is small and there is no requirement for delay. Considering that various network slices have different performance requirements, different network slices are often supported by different frequencies. One network slice can be associated with one or more access network devices/cells, and one access network device/cell can also be associated with One or more network slices.

Different logical subnets can be identified and distinguished by "single network slice selection assistance information" (S-NSSAI). Each S-NSSAI may include but is not limited to one or more of the following information: slice/service type (SST), slice differentiator (SD). SST points to slice-specific characteristics and service types; SD, as a supplement to SST, can further distinguish multiple network slice instances that meet the same SST. This information can be optional.

Slice group: One or more network slices are grouped and identified according to rules. Grouping rules can be: based on slice/service type SST, based on user access control access category (user access control access category, UAC access category) and other grouping rules.

In addition, in the current technology, a slice can only be associated with at most one slice group, and the mapping relationship of the slice group (that is, which slice or slices belong to the slice group) can be applied to both the cell reselection process and the random access process. The mapping relationship of the group is valid within the tracking area (TA) and is sent to the UE by the core network (CN) through non-access stratum (NAS) signaling. In the future, a slice will also be allowed to be associated with slice groups belonging to different purposes. For example, slice #1 can be associated with slice group #1 used for cell reselection, or it can be associated with both at the same time. Slice group #2 for random access channel (RACH). However, for the same purpose, one slice is not allowed to be associated with multiple slice groups. For example, when slice #1 is used for cell reselection, slice #1 can only be associated with slice group #1 at most. Similarly, when slice #1 is used During RACH, slice #1 can only be associated with slice group #2 at most.

3) The cell reselection process in current technology and the cell reselection process based on slice groups:

The cell reselection process refers to the process in which the UE selects the best cell to provide service signals by monitoring the signal quality of neighboring cells and the current cell in the idle or inactive state. Specifically, cell reselection includes the following processes:

First, the UE measures the current serving cell and neighboring cells based on the measurement start standard. Neighboring cells include but are not limited to cells of the same frequency, different frequencies, and different systems. For example, the measurement start standard is: when the cell reselection priority of the neighboring cell is higher than the cell reselection priority of the current serving cell, no matter how good the signal quality of the current serving cell is, the measurement of the neighboring cell is unconditionally started; when the neighboring cell If the cell reselection priority of the current serving cell is lower than or equal to the cell reselection priority of the current serving cell, the UE can measure the signal quality of the currently serving cell and compare the signal quality of the currently serving cell with the quality standard configured by the network. If If the signal quality of the currently serving cell is better than the quality standard, the neighboring cells will not be measured. If it is worse than the quality standard, the neighboring cells will be measured. The UE can obtain the priority of each frequency point through broadcast or radio resource control (RRC) dedicated message to determine the cell reselection priority of each cell.

The UE then evaluates the best cell among the multiple cells that can be measured. The reference basis includes but is not limited to one or more of the following: cell reselection priority (which can also be understood as frequency priority), serving cell signal quality, neighboring cell signal quality, etc.

Next, after the UE evaluates the best cell, it determines whether it can reselect (reselection can also be understood as camping on) to the best cell. For example, if the cell does not have access restrictions (for example, the operator may have some reserved cells or cells with access restrictions), etc., the best cell will be camped on. If it is impossible to camp, it can still stay in the current serving cell.

Cell reselection based on slice group:

In cell reselection based on slice groups, slice information can be configured to the UE through a new system information block (SIB) or RRC release message. The slice information includes the identifier of one or more slice groups, Supports the frequency points (one or more) of each slice group and the corresponding cell reselection priority (slice group specific cell reselection priority), etc.

When the UE needs to initiate cell reselection based on slice group due to mobility, it can be based on the priority of the slice group (slice group priority) and the frequency points supporting each slice group and the corresponding cell reselection priority in the slice information. All possible frequency points are sorted. Frequency point sorting is used for frequency point measurement and optimal cell evaluation during the cell reselection process. All possible frequency points can be understood as all frequency points that can be measured by the UE, including but not limited to: frequency points that support slice groups, frequency points that do not support slice groups, or can also be understood as configured in the slice information after reusing SIB4 The frequency points of the cell reselection priority corresponding to the slice group and the remaining unconfigured frequency points.

The priority of the slice group can be determined by the UE NAS and sent to the UE access stratum (AS); it can be configured by the CN to the UE through a NAS message. Specifically, the UE NAS receives the configuration and parses it. Then it is sent to the UE AS; it can also be sent by the CN to the current serving access network device, and the current serving access network device then sends it to the UE AS through the RRC release message.

4) Random access (RA) and slice group-based random access in current technology:

The UE and the access network equipment establish a wireless link through the RA process to achieve uplink synchronization. After the RA is successfully completed, the two can perform normal data interoperation. RA is divided into contention based random access (contention based random access) access (CBRA) and contention-free random access (CFRA).

Random access based on slice groups:

In order to achieve rapid identification of several features of Rel-17 (such as small data transmission (SDT), radio access network slicing (RAN slicing)), random access channel RACH partitioning (partitioning) is introduced. That is, the public RACH resources of the air interface are divided into several different partitions (Partition), and each RACH Partition is configured with a separate set of RACH resources and corresponding applicable feature combinations.

During the initialization process of RA parameters, corresponding random access priorities (RA-prioritization) are configured for different RA types (such as 2-step random access or 4-step random access). This random access priority is used for any uplink bandwidth part (bandwidth) of SpCell (special cell, in dual connectivity mode, it refers to the primary cell in the primary cell group or the primary and secondary cells of the secondary cell group, otherwise it refers to the primary cell) part, BWP), the random access priority parameters include but are not limited to: high priority power ramping step (power ramping step high priority) and Backoff indicator (BI) scaling factor. Among them, the high priority power increase step size is used to indicate the increase step size of the transmit power during the priority random access process, and the avoidance index scaling factor is used to control the interval between the two random access channel opportunity (RACH occasion, RO) requests of the UE. avoidance time. Similarly, for specific slice group services, the network side can also configure the corresponding random access priority based on the slice group to achieve early identification of specific services.

When the UE wants to initiate a specific slice group service, the UE's media access control (MAC) layer will select the appropriate random access channel partition RACH Partition based on the slice group identifier provided by the upper layer (upper layer) and random access priority RA-Prioritization to perform a random access process based on slice groups.

The identity of the slice group may be changed when the following situations occur: For example, if the UE changes the type of service it wants to initiate, it will cause the slice group to change, and the change of the slice group will cause the slice group identity to change; for example, if a slice is allowed Associated to multiple slice groups (slice groups can be slice groups with different uses, or no limit on uses), then the slice service that the UE wants to initiate may correspond to multiple slice groups. When the UE NAS updates the slice group priority, it may cause The identity of the slice group changes.

5) Problems existing in current technology:

(1) In the current cell reselection process based on slice group, in the scenario where the priority of the slice group is generated by the UE NAS itself and then sent to the UE AS, if the UE NAS updates the slice group priority, for the executing For a UE AS that performs cell reselection based on slice groups, it is unclear how to operate after receiving a new slice group priority from the UE NAS. Based on this, this application proposes that in the scenario where the UE NAS generates the priority of the slice group by itself, for the UE AS that is performing cell reselection based on the slice group, when receiving the new slice group priority sent by the UE NAS, UE AS subsequent execution process.

(2) In the current slice group-based random access process, if the UE upper layer (upper layer) updates the slice group identifier, for the UE MAC that is performing slice group-based random access, after receiving the upper layer ( upper layer), it is unclear how to operate. Based on this, this application proposes the subsequent execution process of the UE MAC when the UE MAC that is performing slice group-based random access receives the slice group identifier updated by the upper layer.

(3) In the scenario where the priority of the slice group is sent by the CN to the current serving access network device, and the current serving access network device sends it to the UE through an RRC release message, the UE moves from the source access network device to the target access network device. The network access device and the target access network device will subsequently send (for example, broadcast or RRC message sending) the slice group priority to the UE as the current access network device. In the current technology, it is unclear how the target access network device obtains the slice group priority, which will affect Subsequent cell reselection process. Based on this, this application proposes a method for the target access network device to obtain the priority of the slice group.

(4) In the current technology, a slice group can only be associated with at most one slice group, and the mapping relationship of the slice group (that is, which slice or slices belong to the slice group) can be applied to both the cell reselection process and the random access process. , if a slice group is allowed to be associated with slice groups belonging to different purposes, it is unclear how to configure the mapping relationship of the slice group to the access network device and the UE. Based on this, this application proposes a method of configuring the mapping relationship of the slice group to the access network device and the UE.

Next, the scheme will be introduced in detail with reference to the attached drawings. Features or contents marked with dotted lines in the drawings can be understood as optional operations or optional structures of the embodiments of the present application. The contents of multiple embodiments/examples of this application may be referred to each other, and each embodiment/example may be used as a separate embodiment, or multiple embodiments/examples may be combined as one embodiment.

Example 1:

As shown in Figure 2, a communication flow diagram is provided, which introduces the scenario where the UE NAS generates the priority of the slice group by itself. For the UE AS that is performing cell reselection based on the slice group, when receiving the UE NAS sent When the new slice group priority is determined, the UE AS will perform the subsequent execution process. This example can also be seen as a Slice Group Specific parameter update method, that is, the UE AS updates relevant parameters based on the message sent by the NAS, and then re-executes the corresponding process based on the updated Slice Group specific parameters.

Step 201: During the cell reselection process based on the slice group, the non-access layer UE NAS of the terminal device sends the first information to the access layer UE AS of the terminal device. Correspondingly, the access layer UE AS of the terminal device receives the first information from The first information of the non-access layer UE NAS of the terminal device, the first information indicating the priority of the slice group.

The first information may indicate the priority of one slice group or the priorities of multiple slice groups. The priority of the slice group indicated by the first information may be different from the priority of the previously configured slice group, and the first information may be understood as being used to update the priority of the slice group.

If the UE AS is configured with multiple slice groups, the first information may indicate the priorities of the multiple slice groups; it may also indicate the priorities of a part of the multiple slice groups, then the remaining part of the slice groups The priority can be the default priority (for example, the default priority is the lowest priority or the default is the highest priority), or the original priority remains unchanged.

The slice group indicated by the first information may be completely different or identical to the slice group referenced in the currently executing cell reselection process based on the slice group, or the same slice group or different slice groups may exist. For example, the first information indicates slice group #1, and the referenced slice group is slice group #1; for example, the first information indicates slice group #1 and slice group #2, and the referenced slice group is slice group #1; for example, The first information indicates slice group #1 and slice group #3, and the reference slice groups are slice group #1 and slice group #2.

In an optional implementation, after receiving the first information, the UE AS may first determine whether the priority of the slice group indicated by the first information is higher than the currently executing cell reselection process based on the slice group. The priority of the slice group referenced in; if so, perform the subsequent process. When determining whether the priority of the slice group indicated by the first information is higher than the priority of the slice group referenced in the currently executing cell reselection process based on the slice group, an example may be to determine the first Whether the same slice group exists in the slice group indicated by the information and the reference slice group, and if so, for the same slice group (such as slice group #1), determine the slice group (such as slice group #1) indicated by the first information Whether the priority of #1) is higher than the priority of the slice group (for example, slice group #1) referenced in the currently executing slice group-based cell reselection process; another example may be to not consider the first information indication Whether the slice group and the reference slice group are the same slice group, just compare the priorities, that is, determine whether the priority indicated by the first information is higher than the priority of the reference slice group; for example, determine the priority indicated by the first information. Whether the priority is higher than that of the referenced slice group Priority, as long as one is higher; for another example, determine whether the number of priorities of slice groups higher than the reference in the priority indicated by the first information is greater than or equal to a preset number, and the preset number can be 1, Or 2, or more. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the cell reselection process, try to select a high-priority slice group to perform cell reselection, which can avoid the need to perform cell reselection. During the process, the cell reselection was interrupted because the priority of the slice group changed.

The process of comparing priorities may be performed before the subsequent update process of the frequency point sorting of multiple frequency points by the UE AS based on the priority of the slice group. If the priority of the slice group is higher than the priority of the slice group, Based on the priority of the slice group referenced in the cell reselection process of the slice group, the frequency ranking of multiple frequencies is updated based on the priority of the slice group; if it is lower than the priority of the slice group, there is no need to update the frequency ranking based on the priority of the slice group. The priority updates the frequency ordering of multiple frequency points. For another example, this process may be performed before interrupting the subsequently-mentioned cell reselection process based on the slice group.

Step 202: The UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group. The updated frequency ranking is used to perform frequency points in the cell reselection process based on the slice group. Measurement and/or optimal cell evaluation.

The best cell can also be called the highest ranked cell or the best cell.

Multiple frequency points can be understood as all frequency points that can be measured by the UE, including but not limited to: frequency points that support slice groups and frequency points that do not support slice groups. It can also be understood that slices are configured in the slice information after multiplexing SIB4 The cell reselection priority frequency points corresponding to the group and the remaining unconfigured frequency points.

In cell reselection based on slice groups, slice information can be configured to the UE through a new system information block (SIB) or RRC release message. The slice information includes the identification of one or more slice groups and supports each The frequency point (one or more) of the slice group and the corresponding cell reselection priority (slice group specific cell reselection priority), etc. It can be understood that one frequency point can support one or more slice groups.

When sorting multiple frequency points based on the priority of a slice group, one or more frequency points that support a slice group with a higher priority in the slice information can be placed first, and the frequency points that support a lower priority in the slice information can be placed first. One or more frequency points of the priority slice group are ranked later. For example, as shown in Figure 1b, a schematic diagram of frequency point sorting and updating is provided. In the slice information, the frequency points that support slice group #1 include F1, F2, and F3, the frequency points that support slice group #2 include F4, and F5, and the frequency points that support slice group #2 include F4 and F5. The frequency points of slice group #3 include F6 and F7. Before the update, the priority of slice group #1 > the priority of slice group #2 > the priority of slice group #3, then frequency points F1, F2, and F3 are located before frequency points F4 and F5, and frequency points F4 and F5 are located Before frequency points F6 and F7. After the update, slice group #1 has the highest priority and slice group #2 has the lowest priority. Then frequency points F1, F2, and F3 are located before frequency points F6 and F7, and frequency points F6 and F7 are located before frequency points F4 and F5. . As for the order between multiple frequency points that support a certain slice group, you can refer to the cell reselection priority corresponding to the slice group in the slice information for sorting. For example, the sorting between frequency points F1, F2 and F3 can be sorted by referring to the cell reselection priority. Similarly, the sorting between frequency points F4 and F5 and the sorting between F6 and F7 can be sorted by referring to the cell reselection. Sort by priority.

In one example, the frequency ranking can follow one or more of the following principles:

The higher the priority of the slice group supported by the frequency point, the higher the frequency point is sorted;

When the priorities of the supported slice groups are the same, the higher the cell reselection priority (for example, new SIB or RRC release message configuration) corresponding to the frequency point, the higher the ranking of the frequency point;

For different frequency points that support the same slice group, the frequency points that are configured with the cell reselection priority based on the slice group are ranked higher than the frequencies that are not configured with the cell reselection priority based on the slice group;

Frequency points that can support slice groups are ranked higher than those that do not support any slice groups;

For frequency points that do not support any slice group, the cell reselection priority reuses the value in SIB4.

Step 203: The UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting.

In one example, when performing the cell reselection process based on the slice group, the cell reselection process based on the slice group may be re-executed based on the updated frequency ranking regardless of which specific process in the cell repetition process is currently performed. The cell reselection process of the group (currently, the UE AS is executing the cell reselection process based on the slice group and has not completed the cell reselection process. If it is necessary to re-execute the cell reselection process based on the slice group based on the updated frequency ranking) Although the reselection process is re-executed, it can still be understood as executing this cell reselection process). For example, whether to start measurement can be re-determined based on the updated frequency ranking (for example, when the cell reselection priority of the neighboring cell is higher than the cell reselection priority of the current serving cell, start measuring the neighboring cell; when the cell reselection priority of the neighboring cell is higher When selecting a cell reselection priority with a priority less than or equal to the current serving cell, if the signal quality of the currently serving cell is better than the quality standard, the neighboring cell will not be measured; if it is worse than the quality standard, the neighboring cell will be measured) and executed Corresponding frequency point measurement and optimal cell evaluation.

In another example, before the UE AS performs the cell reselection process based on the slice group (ie, step 203) based on the updated frequency sorting (for example, after receiving the first information), the priority based on the slice group is Before updating the frequency ranking of multiple frequency points; or after updating the frequency ranking of multiple frequency points based on the priority of the slice group; or before receiving the first information), the UE AS The ongoing cell reselection process based on the slice group may be interrupted first; then when the cell reselection process based on the slice group is executed subsequently, the UE AS may continue to perform the interrupted execution based on the updated frequency sorting. Cell reselection process based on slice group. Interrupting first and then executing can avoid invalid execution processes.

The UE AS interrupts the ongoing cell reselection process based on the slice group, including but not limited to any of the following:

The UE AS is measuring the first frequency point (the frequency point being measured is called the first frequency point, and the first frequency point can be one or multiple), but the measurement report of the first frequency point is not obtained, then the UE AS interrupts the measurement of the first frequency point; or,

If the UE AS obtains the measurement report of the first frequency point but does not start to evaluate the best cell, the UE AS interrupts and starts to evaluate the best cell; or,

UE AS is evaluating the best cell, then UE AS stops evaluating the best cell; or,

If the UE AS has evaluated the best cell and is camping on the best cell, the UE AS will stop camping on the best cell.

Based on the updated frequency sorting, the UE AS continues to execute the interrupted cell reselection process based on the slice group, as follows:

If the UE AS interrupts measuring the first frequency point, it continues to measure the first frequency point, and sorts the frequency points located after the first frequency point in the updated frequency point sorting. For example, as shown in Figure 1b, the UE AS is measuring the frequency point F7. After the UE AS interrupts the measurement of the frequency point F7, it can continue to measure the frequency point F7, and sequence F6, F5, and F4 after F7. Alternatively, if the UE AS interrupts measuring the first frequency point, it can also re-measure multiple frequency points based on the updated frequency point ordering. In one example, measurement can be started unconditionally for service frequency points (such as F4 in Figure 1b) and frequency points ranked before the service frequency points (such as F2, F3, F1, F6, and F7 in Figure 1b). Frequency points located after the service frequency point (such as F5 in Figure 1b) can determine whether to start measurement based on signal quality.

If the UE AS interrupts to start evaluating the best cell, it can start evaluating the best cell based on the updated frequency ranking. For example, based on the updated frequency ranking and the previously saved measurement report for each cell, the best cell can be evaluated and attempted to camp on the best cell.

If the UE AS stops evaluating the best cell, it can re-evaluate the best cell based on the updated frequency ranking. For example, the best cell can be re-evaluated based on the updated frequency ranking and the previously saved measurement report for each cell, and an attempt can be made to camp on the re-evaluated best cell.

If the UE AS stops camping on the best cell, it can camp on the best cell, or re-evaluate the best cell based on the updated frequency ranking and the previously saved measurement report for each cell. , and try to camp on the best cell that is re-evaluated.

In a possible implementation, a timer can be set to determine the time of interruption. For example, before the UE AS interrupts the ongoing cell reselection process based on the slice group, the UE AS can also determine Whether the timer times out. If the timer times out, interrupt the ongoing cell reselection process based on the slice group. Interrupting the current process after the timer times out can reserve a certain update buffer time for the process being executed to improve the continuity of UE behavior.

The duration value of the timer may be configured by the UE NAS (that is, the UE NAS determines the duration value and sends it to the UE AS); or, it is configured by the UE AS (that is, the UE AS determines the duration value); or, Preconfigured values (e.g. pre-specified by the protocol). The timer may be started when the UE AS receives the first information; it may also be started when the UE AS determines a plurality of second frequency points corresponding to the frequency point sorting after the update, compared with the multiple second frequency points corresponding to the frequency point sorting before the update. It is started when the second frequency point changes. The plurality of second frequency points include the first frequency point being measured and the frequency points arranged after the first frequency point (this process will be introduced later); it can also be the UE AS Started when the second information is received (this process will be introduced later).

In a possible implementation, the UE NAS may also send second information to the UE AS. Correspondingly, the UE AS receives the second information from the UE NAS; wherein the second information indicates that the interrupt is being executed. Cell reselection process based on slice group. Furthermore, the UE AS interrupts the ongoing cell reselection process based on the slice group. This second information may be called a break out indication. The second information may be sent before the first information; it may also be sent after the first information; it may also be sent at the same time as the first information, for example, the first information and the second information are sent in the same message or in different messages.

In a possible implementation, before the UE AS performs the cell reselection process (ie, step 203) based on the slice group based on the updated frequency sorting (for example, before the UE AS interrupts the execution of the cell reselection process) (before the cell reselection process based on the slice group), the UE AS may also first determine a plurality of second frequency points corresponding to the frequency point sorting after the update, compared with the plurality of second frequency points corresponding to the frequency point sorting before the update. Whether the frequency point has changed; if it has changed, perform subsequent processes, such as performing subsequent cell reselection processes based on the updated frequency point sorting, or interrupting the ongoing cell reselection process based on the slice group. process. If no changes have occurred, subsequent procedures are not required. The plurality of second frequency points include a first frequency point being measured or evaluated and frequency points arranged after the first frequency point. For example, as shown in Figure 1b, the first frequency point being measured or evaluated is F7, before the update, the frequency points ranked after F7 include F6; after the update, the frequency points ranked after F7 include F6, F5, and F4, then the second frequency point changes. Only when a change occurs, the currently executed cell reselection process will be interrupted. If no change occurs, the currently executed cell reselection process will not be interrupted, which can avoid discontinuity in UE behavior.

As shown in Figure 3, a schematic diagram of the communication process is provided, including the following steps:

Step 301: During the cell reselection process based on the slice group, the non-access layer UE NAS of the terminal device sends the first information to the access layer UE AS of the terminal device. Correspondingly, the access layer UE AS of the terminal device receives the first information from The first information of the non-access layer UE NAS of the terminal device, the first information indicating the priority of the slice group.

Step 302: The UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group. The new frequency point ranking is used to perform frequency point measurement and/or optimal cell evaluation in the cell reselection process based on the slice group.

Optionally, step 303: The UE AS determines that the multiple second frequency points corresponding to the frequency point sorting after the update have changed compared with the multiple second frequency points corresponding to the frequency point sorting before the update.

Step 304: If the UE AS determines that the timer has expired, interrupt the ongoing cell reselection process based on the slice group.

Step 305: The UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting.

As shown in Figure 4, a schematic diagram of the communication process is provided, including the following steps:

Step 401: During the cell reselection process based on the slice group, the non-access layer UE NAS of the terminal device sends the second information to the access layer UE AS of the terminal device. Correspondingly, the access layer UE AS of the terminal device receives the information from Second information of the non-access layer UE NAS of the terminal device, the second information indicating interrupting the ongoing cell reselection process based on the slice group.

Step 402: The UE AS interrupts the ongoing cell reselection process based on the slice group.

Step 403: The non-access layer UE NAS of the terminal device sends the first information to the access layer UE AS of the terminal device. Correspondingly, the access layer UE AS of the terminal device receives the first information from the non-access layer UE NAS of the terminal device. One piece of information, the first information indicates the priority of the slice group.

Step 404: The UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group. The updated frequency ranking is used to perform frequency points in the cell reselection process based on the slice group. Measurement and/or optimal cell evaluation.

Step 405: The UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting.

As shown in Figure 5, another communication flow diagram is provided, which introduces the scenario where the UE NAS generates the priority of the slice group by itself. For the UE AS that is performing cell reselection based on the slice group, when receiving the UE NAS When sending a new slice group priority, the UE AS will perform the subsequent execution process. This example can also be seen as a Slice Group Specific parameter update method, that is, the UE AS updates relevant parameters based on the message sent by the NAS, executes this process based on the original parameters, and then executes it based on the updated Slice Group specific parameters. A one-time process.

Step 501: During the cell reselection process based on the slice group, the non-access layer UE NAS of the terminal device sends the first information to the access layer UE AS of the terminal device. Correspondingly, the access layer UE AS of the terminal device receives the first information from The first information of the non-access layer UE NAS of the terminal device, the first information indicating the priority of the slice group.

For the process of step 501, reference can be made to the process of step 201, and details will not be repeated.

In an optional implementation, after receiving the first information (ie, step 501), the UE AS may first determine whether the priority of the slice group indicated by the first information is lower than the cell reselection based on the slice group. The priority of the slice group referenced in the process; if so, execute the subsequent process. The process of determining whether the priority of the slice group indicated by the first information is lower than the priority of the slice group referenced in the cell reselection process based on the slice group is the same as the determination of the slice indicated by the first information introduced in step 201. The process of whether the priority of the group is higher than the priority of the slice group referenced in the currently executing cell reselection process based on the slice group is similar and will not be described in detail. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the cell reselection process, try to select a high-priority slice group to perform cell reselection, which can avoid the need to perform cell reselection. During the process, the cell reselection is interrupted because the priority of the slice group changes. If the updated priority is lower than the priority of the slice group being referenced, you can No need to update.

Step 502: The UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group. The updated frequency ranking is used to perform frequency points in the next cell reselection process based on the slice group. Measurement and/or optimal cell evaluation.

For the process of updating the frequency ranking of multiple frequency points based on the priority of the slice group in step 502, you can refer to the frequency ranking of multiple frequency points based on the priority of the slice group introduced in step 202. The update process will not be described again.

Step 503: The UE AS executes and completes the cell reselection process based on the slice group based on the frequency point sorting before the update.

The order of step 502 and step 503 is not limited.

Optionally, step 504: In the next cell reselection process based on the slice group, the UE AS performs the cell reselection process based on the slice group based on the frequency ordering updated in step 502.

For example, re-determine the conditions for starting measurement, and perform corresponding frequency point measurement and optimal cell evaluation.

Based on the frequency point sorting before the update, the UE AS may also determine a plurality of second frequency points corresponding to the frequency point sorting after the update before completing the cell reselection process based on the slice group (ie, step 503). Compare whether the plurality of second frequency points corresponding to the frequency point sorting before the update has changed, and if there is no change, then based on the frequency point sorting before the update, the cell reselection process based on the slice group is executed and completed; wherein, The plurality of second frequency points include the first frequency point being measured and frequency points arranged after the first frequency point. For example, as shown in Figure 1c, the first frequency point being measured or evaluated is F7. Before and after the update, the frequency points ranked after F7 include F6, and the second frequency point does not change.

Example 2:

As shown in Figure 6, a communication flow diagram is provided, which introduces the subsequent execution process of the UE MAC when the UE MAC that is performing slice group-based random access receives the slice group identifier updated by the upper layer. This example can also be seen as a Slice Group Specific parameter update method, that is, the UE MAC updates relevant parameters based on the message sent by the upper layer, and then re-executes the corresponding process based on the updated Slice Group specific parameters.

Step 601: During the random access process based on the slice group, the media access control layer UE MAC of the terminal device receives the first slice group identifier, and the first slice group identifier is used to trigger the random access based on the slice group. process.

In one example, the upper layer of the terminal device (UE upper layer) sends the first slice group identifier to the UE MAC. Correspondingly, the UE MAC receives the first slice group identifier from the UE upper layer. The UE upper layer can be any layer above the MAC layer, such as the non-access NAS layer, the radio resource control protocol RRC layer, the packet data convergence protocol (PDCP) layer, and the wireless link Control layer (radio link control, RLC).

In an optional implementation, the UE MAC updates the slice group identifier used to trigger slice group-based random access to the first slice group identifier. The order of this process and step 602 is not limited.

Before the first slice group identifier is received, the slice group-based random access process currently being executed refers to The second slice group of may be different from the first slice group.

In an optional implementation, after receiving the identifier of the first slice group, the UE MAC may first determine whether the priority corresponding to the first slice group identifier is higher than the random access based on the slice group. Enter the priority corresponding to the second slice group identifier referenced by the process; if so, execute the subsequent process. For example, the priority comparison process may be performed before the later-mentioned UE MAC performs the slice group-based random access process based on the first slice group identifier. For another example, this process may be performed before interrupting the currently executing slice group-based random access process mentioned later. For another example, the process may be performed before updating the slice group identifier used to trigger slice group-based random access to the first slice group identifier. The higher the priority of the slice group, the more the UE wants to initiate slice services belonging to this slice group. During the random access process, by trying to select a high-priority slice group to perform random access, you can avoid performing random access. During the process, the random access was interrupted because the priority of the slice group changed.

Step 602: The UE MAC performs the random access process based on the slice group based on the first slice group identifier.

For example, the UE MAC can select parameters associated with the first slice group identifier according to the first slice group identifier. The parameters include but are not limited to one or more of the following: random access channel partition RACH Partition, random access channel partition Enter priority RA–Prioritization. The UE MAC may perform random access based on the selected parameters associated with the first slice group identity. For the introduction of random access channel partition RACH Partition and random access priority RA-Prioritization, you can refer to the previous article and will not be repeated.

In one example, when executing the random access process based on the slice group, no matter which specific process in the random access process is currently executed, the random access process may be re-executed based on the identity of the first slice group. Slice group-based random access process (in the current situation, the UE MAC is executing a slice group-based random access process and has not completed this random access process. If it needs to be based on the updated identity of the first slice group, Re-execution of the random access process, although it is re-execution, can still be understood as execution of this random access process based on the slice group). For example, the random access process is reinitiated based on the updated slice group identifier (ie, the first slice group identifier).

In another example, before the UE MAC performs the slice group-based random access process (ie, step 602) based on the first slice group identifier, the UE MAC may first interrupt all processes being executed. Describe the random access process based on slice groups. When subsequently executing the slice group-based random access process based on the first slice group identifier, the UE MAC may continue to execute the interrupted execution of the slice-based random access process based on the first slice group identifier. group random access process. Interrupting first and then executing can avoid invalid execution processes.

The UE MAC interrupts the ongoing slice group-based random access process, including but not limited to any of the following:

After the UE MAC selects the random access channel partition RACH Partition, the UE MAC interrupts the initialization parameters. The parameters include but are not limited to one or more of the following: random access priority RA-Prioritization, parameters corresponding to the RACH Partition. ;or,

The UE MAC initialization completes parameters, then the UE MAC interrupts the random access RA resource selection process. The parameters include but are not limited to one or more of the following: parameters corresponding to random access priority RA-Priroritization and RACH Partition.

The UE MAC continues to execute the interrupted random access process based on the slice group based on the first slice group identifier, specifically as follows:

If the UE MAC interrupts the initialization parameters, it can be reset based on the new slice group identifier (i.e., the first slice group identifier). Newly select the random access channel partition RACH Partition and initialize the parameters.

If the UE MAC interrupts the random access RA resource selection process, it can continue the random access RA resource selection process; or, the UE MAC can reselect the random access channel partition based on the new slice group identifier (i.e., the first slice group identifier) RACH Partition, initialize parameters, and perform random access RA resource selection process.

In addition, if the RACH Partition that the UE has selected is consistent with the RACH Partition associated with the updated slice group identifier, the UE can also re-determine the random access priority RA-Prioritization based on the updated slice group identifier, and adjust the parameters corresponding to the RACH Partition. and RA-Prioritization initialization, and subsequent random access process.

In a possible implementation, a timer can be set to determine the time of interruption. For example, before the UE MAC interrupts the ongoing slice group-based random access process, the UE MAC can also determine Whether the timer times out. If the timer times out, interrupt the ongoing random access process based on the slice group. Interrupting the current process after the timer times out can reserve a certain update buffer time for the process being executed to improve the continuity of UE behavior.

The duration value of the timer may be configured by the UE MAC (that is, the UE MAC determines the duration value); or, it is configured by the upper layer of the UE (that is, the upper layer of the UE determines the duration value and sends it to the UE MAC); or, Preconfigured values (e.g. pre-specified by the protocol). The timer may be started when the UE MAC receives the first slice group identifier; it may also be started when the UE MAC determines the parameters associated with the first slice group identifier, compared with the time before receiving the first slice group identifier. The slice group-based random access process is started when the parameter associated with the second slice group identifier referenced changes (this process will be introduced later). It may be started when the UE MAC receives the third information (this process will be introduced later).

In a possible implementation, the upper layer of the UE may also send third information to the UE MAC. Correspondingly, the UE MAC may also receive the third information from the upper layer of the UE; wherein the third information indicates that the interruption is ongoing. The slice group-based random access process is performed. Furthermore, the UE MAC interrupts the ongoing slice group-based random access process. This third information may be called a break out indication. The third information may be sent before the identifier of the first slice group; it may also be sent after the identifier of the first slice group; it may also be sent at the same time as the identifier of the first slice group, for example, the third information may be sent before the identifier of the first slice group. The identification and third information are sent in the same message or in different messages.

In a possible implementation, before the UE MAC performs the slice group-based random access process (ie, step 602) based on the first slice group identifier (for example, before the UE MAC interrupts Before the random access process based on the slice group is being executed), the UE MAC may also first determine the parameters associated with the first slice group identifier, compared with before receiving the first slice group identifier Whether the parameter associated with the second slice group identifier referenced by the slice group-based random access process changes. If it changes, perform subsequent processes, such as performing subsequent steps based on the first slice group identifier. A slice group-based random access process, or interrupting the slice group-based random access process being executed. If no changes have occurred, subsequent procedures are not required. The parameters include but are not limited to one or more of the following: random access channel differentiation RACH Partition, random access priority RA-Prioritization. Only when a change occurs, the currently executed random access process will be interrupted. If no change occurs, the currently executed random access process will not be interrupted, which can avoid discontinuity in UE behavior.

As shown in Figure 7, a schematic diagram of the communication process is provided, including the following steps:

Step 701: In the random access process based on the slice group, the upper layer of the terminal device sends the first slice group identifier to the media access control layer UE MAC of the terminal device. Correspondingly, the media access control layer UE MAC of the terminal device Receive a first slice group identifier from an upper layer of the terminal device, where the first slice group identifier is used to trigger a random slice group-based machine access process.

Step 702: The UE MAC updates the slice group identifier used to trigger slice group-based random access to the first slice group identifier.

Optionally, step 703: UE MAC determines the parameters associated with the first slice group identifier, and compares them with the second parameters referenced by the slice group-based random access process before receiving the first slice group identifier. The parameters associated with the slice group identifier change.

Step 704: If the UE MAC determines that the timer has expired, interrupt the ongoing random access process based on the slice group.

Step 705: The UE MAC performs the random access process based on the slice group based on the first slice group identifier.

As shown in Figure 8, a schematic diagram of the communication process is provided, including the following steps:

Step 801: In the random access process based on the slice group, the upper layer of the terminal device sends the third information to the media access control layer UE MAC of the terminal device. Correspondingly, the media access control layer UE MAC of the terminal device receives the third information from the terminal device. The third information of the upper layer of the device indicates interrupting the random access process based on the slice group being executed.

Step 802: UE MAC interrupts the ongoing random access process based on the slice group.

Step 803: The upper layer of the terminal device sends the first slice group identifier to the media access control layer UE MAC of the terminal device. Correspondingly, the media access control layer UE MAC of the terminal device receives the first slice from the upper layer of the terminal device. Group identifier, the first slice group identifier is used to trigger a random access process based on the slice group.

Step 804: The UE MAC updates the slice group identifier used to trigger slice group-based random access to the first slice group identifier.

Step 805: The UE MAC performs the random access process based on the slice group based on the first slice group identifier.

As shown in Figure 9, another communication flow diagram is provided, which introduces the subsequent execution process of the UE MAC when the UE MAC that is performing random access based on the slice group receives the slice group identifier updated by the upper layer. This example can also be seen as a Slice Group Specific parameter update method, that is, the UE MAC updates relevant parameters based on the message sent by the upper layer, executes this process based on the original parameters, and then executes the next step based on the updated Slice Group specific parameters. A one-time process.

Step 901: During the random access process based on the slice group, the media access control layer UE MAC of the terminal device receives the first slice group identifier, and the first slice group identifier is used to trigger the random access based on the slice group. process.

For the process of step 901, reference can be made to the process of step 601, and details will not be repeated.

In an optional implementation, the UE MAC updates the slice group identifier used to trigger slice group-based random access to the first slice group identifier. The order of this process and step 902 is not limited.

Before the first slice group identifier is received, the second slice group referenced by the currently executing slice group-based random access process is different from the first slice group.

In an optional implementation, after receiving the identifier of the first slice group, the UE MAC may first determine whether the priority corresponding to the first slice group identifier is lower than the random access based on the slice group. Enter the priority corresponding to the second slice group identifier referenced by the process; if so, execute the subsequent process. The higher the priority of the slice group, the more the UE wants to send During the random access process of the slice services belonging to the slice group, by trying to select a high-priority slice group to perform random access, you can avoid interruptions due to changes in the priority of the slice group during the random access process. As a result, this random access is interrupted. If the updated priority is lower than the priority of the slice group being referenced, there is no need to update.

Step 902: The UE MAC executes and completes the random access process based on the slice group based on the identity of the currently referenced second slice group.

Optionally, step 903: In the next slice group-based random access process, the UE MAC performs a slice group-based random access process based on the identity of the first slice group received in step 901.

For example, select a random access channel partition RACH Partition based on the identifier of the first slice group, initialize parameters, select random access RA resources, etc. The parameters include but are not limited to one or more of the following: parameters corresponding to random access priority RA-Prioritization and RACH Partition.

In a possible implementation, before the UE MAC performs the slice group-based random access process (ie, step 902) based on the second slice group identifier, the UE MAC may also first determine the Whether the parameters associated with the first slice group identifier have changed compared with the parameters associated with the second slice group identifier referenced by the slice group-based random access process before receiving the first slice group identifier, if If there is no change, the random access process based on the slice group is performed based on the second slice group identifier. The parameters include but are not limited to one or more of the following: random access channel differentiation RACH Partition, random access priority RA-Prioritization.

Example 3:

This article introduces the method for the target access network device to obtain the priority of the slice group after the UE moves from the source access network device to the target access network device. It may be that the source access network device or the core network device sends the priority of the slice group to the target access network device (the source access network device obtains the priority of the slice group from the core network), and then the target access network device The device may send the priority of the slice group to the terminal device, for example, send the priority of the slice group to the UE after the handover through an RRC release message. Among them, the core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be, for example, an AMF. The following introduction takes the core network device as an AMF as an example.

In one possible implementation manner, the source access network device directly sends the slice group priority to the target access network device. For example, the source access network device sends a handover request (Handover Request) to the target access network device. Correspondingly, the target access network device receives a handover request (Handover Request) from the source access network device. The handover request includes: The priority of the slice group. The slice group is a slice group supported by the target access network device (usually the source access network device also supports the slice group). It is understandable that access network devices can know which slice groups each other supports. This example can be applied to XN switching scenarios.

In a possible implementation manner, the AMF sends the slice group priority to the target access network device. For example, the AMF sends a Path Switch Request Ack to the target access network device, and accordingly, the target access network device receives a Path Switch Request Ack sent from the AMF device; the path switching The request confirmation includes: the priority of the slice group, which is a slice group supported by the target access network device (usually the source access network device also supports the slice group). This process usually occurs after the target access network device receives a handover request (Handover Request) from the source access network device. This example can be applied to XN switching scenarios.

In a possible implementation manner, the AMF sends the slice group priority to the target access network device. For example, the source access network device sends a handover request (Handover Required) to the AMF. Correspondingly, the AMF receives a handover request (Handover Required) from the source access network device. The handover requirement triggers the AMF to send a handover request to the target access network device. , Correspondingly, the target access network device receives a handover request from the AMF. The handover request includes: the priority of the slice group. The slice group is a slice group supported by the target access network device (usually the source access network device The device will also support the slice group). This example can be applied to NG switching scenarios.

In a possible implementation, the source access network device sends a Retrieve UE Context Response (Retrieve UE Context Response) to the target access network device, and accordingly, the target access network device receives the Retrieve UE Context from the source access network device. Response (Retrieve UE Context Response), the retrieval UE context response includes: the priority of the slice group, the slice group is the slice group supported by the target access network device (usually the source access network device will also support all (described slice group). It is understandable that access network devices can know which slice groups each other supports. This example can be applied to scenarios of reconstruction, establishment, and recovery across access network devices. The source access network device can send a Retrieve UE Context Request (Retrieve UE Context Request) to the target after receiving the request from the target access network device. The access network device sends a response to retrieve the UE context.

Example 4:

This article introduces the method of configuring the mapping relationship of slice groups to access network equipment and UE.

In one example, the operation, management and maintenance (OAM) device sends to the access network device (sending can be understood as configuration) the mapping relationship between the third slice group and the slice, and the mapping relationship between the fourth slice group and the slice. relationship; the access network device then sends the mapping relationship between the third slice group and the slice, and the mapping relationship between the fourth slice group and the slice to the UE.

The third slice group and the fourth slice group are used for different functions, for example, the third slice group is used for cell reselection, and the fourth slice group is used for random access. When the role of the slice group can be indicated by indication information, for example, when sending the mapping relationship of the slice group, the indication information can also be sent, and the indication information indicates the role of the mapping relationship of the slice group. For example, when sending the mapping relationship between the third slice group and the slice, indication information may also be sent to indicate that the mapping relationship between the third slice group and the slice group is used for cell reselection; for example, when sending the mapping relationship between the fourth slice group and the slice , indication information may also be sent to indicate the mapping relationship between the fourth slice group and the slice group for random access. The role of the slice group can also be stipulated by the protocol. For example, the protocol stipulates the role of certain numbered slice groups. For example, the protocol stipulates that the role of the slice group numbered 0-49 is cell reselection, and the role of the slice group numbered 50-99. for random access.

In addition, the mapping relationship of the third slice group is completely or partially different from the mapping relationship of the fourth slice group. For example, the third slice group has a mapping relationship with slice #1, slice #2, and slice #3. There is a mapping relationship between the four slice groups and slice #1, slice #2, and slice #4, or there is a mapping relationship between the fourth slice group and slice #4, slice #5, and slice #6.

The introduction of the third slice group and its corresponding functions and instruction information, and the fourth slice group and its corresponding functions and instruction information can also be applied to subsequent examples.

For example, the OAM device sends to the access network device (sending can be understood as configuration) the mapping relationship between the third slice group and slices used for cell reselection and the slice used for random access in the tracking area to which the access network device belongs. The mapping relationship between the fourth slice group and the slices.

For example, the access network device sends to the UE the mapping relationship between the third slice group and slices used for cell reselection in the tracking area where the UE is currently located and adjacent tracking areas, and the fourth slice group and slices used for random access. mapping relationship between them.

In one example, the OAM device sends (the sending can be understood as configuration) the third slice group and the switch to the access network device. The mapping relationship between slices and the mapping relationship between the fourth slice group and slices. The access network device sends the mapping relationship between the third slice group and the slice and the mapping relationship between the fourth slice group and the slice to the core network device. The core network device sends the mapping relationship between the third slice group and the slice and the mapping relationship between the fourth slice group and the slice to the UE. Among them, the core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be, for example, an AMF. The following introduction takes the core network device as an AMF as an example.

For example, the OAM device sends to the access network device (sending can be understood as configuration) the mapping relationship between the third slice group and slices used for cell reselection and the slice used for random access in the tracking area to which the access network device belongs. The mapping relationship between the fourth slice group and the slices. For example, the access network device determines the mapping relationship between the third slice group and slices used for cell reselection and the mapping relationship between the fourth slice group and slices used for random access in the tracking area to which the access network device belongs. The mapping relationship is sent to AMF.

For example, the AMF sends to the UE the mapping relationship between the third slice group and slices used for cell reselection in the tracking area where the UE is currently located and adjacent tracking areas, and the mapping relationship between the fourth slice group and slices used for random access. Mapping relations.

In one example, the OAM device sends (sending can be understood as configuration) the mapping relationship between the third slice group and the slice, and the mapping relationship between the fourth slice group and the slice to the core network device; the core network device sends the third slice group to the access network device. The mapping relationship between the slice group and the slice, and the mapping relationship between the fourth slice group and the slice; the access network device then sends the mapping relationship between the third slice group and the slice, and the mapping relationship between the fourth slice group and the slice to the UE. Among them, the core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be, for example, an AMF. The following introduction takes the core network device as an AMF as an example.

For example, the OAM sends to the AMF (sending can be understood as configuration) the mapping relationship between the third slice group and slices used for cell reselection and the slice used for random access in the tracking area to which the access network device connected to the AMF belongs. The mapping relationship between the fourth slice group and the slices.

For example, the AMF combines the mapping relationship between the third slice group and slices used for cell reselection in the tracking area to which the access network device connected to the AMF belongs, and the mapping relationship between the fourth slice group and slices used for random access. The mapping relationship is sent to the access network device connected to the AMF.

In one example, the OAM device sends to the core network device (sending can be understood as configuration) the mapping relationship between the third slice group and the slice, and the mapping relationship between the fourth slice group and the slice; the core network device sends the third slice group and the mapping relationship to the UE. The mapping relationship between slices and the mapping relationship between the fourth slice group and slices. Among them, the core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be, for example, an AMF. The following introduction takes the core network device as an AMF as an example.

Optionally, the AMF determines the mapping relationship between the third slice group and slices used for cell reselection and the fourth slice group and slices used for random access in the tracking area to which the access network device connected to the AMF belongs. The mapping relationship between is sent to The access network equipment connected to the AMF. This process is to allow the access network equipment and the AMF to align their understanding of the slice group mapping relationship, and has nothing to do with how the UE obtains the slice group mapping relationship.

When sending the mapping relationship, the mapping relationship between the third slice group and the slices and the mapping relationship between the fourth slice group and the slices can be sent in the same message or in different messages.

When the mapping relationships of slice groups for different purposes are different, or a slice can belong to two slice groups for different purposes at the same time, the CN or the access network device can send the mapping relationships of the slice groups for different purposes to the UE respectively, so that the UE can This mapping relationship can correctly perform subsequent cell reselection or random access procedures.

Example 5:

In one example, the OAM device configures the mapping relationship between the slice group and the slice for cell reselection and the mapping relationship between the slice group and the slice for random access for the access network device; the access network device then sends the mapping relationship to the UE. The mapping relationship between the slice group and the slice used for cell reselection and/or the mapping relationship between the slice group and the slice used for random access.

As shown in Figure 10, a schematic diagram of the communication process is provided, including the following steps:

Step 101: The OAM device configures for the access network device the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access in the tracking area to which the access network device belongs. .

Step 102: The UE may send indication information to the access network device.

In an optional example, the indication information may be used to indicate one or more of the following: the UE supports cell reselection based on a slice group, the UE does not support cell reselection based on a slice group, the The UE supports random access based on slice groups, and the UE does not support random access based on slice groups. This instruction information may also be called capability information.

For example, if the UE supports cell reselection and/or random access based on slice groups, it will set the identification bit of the corresponding capability to enable and send it to the access network device. Otherwise, it will set the identification bit of the corresponding capability to disable. and sent to the access network equipment. In another example, when the UE does not support a certain capability (for example, does not support slice group-based random access or does not support slice group-based cell reselection), it may not send a message that it does not support the capability to the access network device. , that is, if the UE does not send support for a certain capability, it can be considered that the UE does not support this capability.

In another optional example, the indication information is used to indicate one or more of the following: the UE needs to perform cell reselection based on the slice group, the UE needs to use the mapping relationship between the slice group and the slice for cell reselection, The UE needs to perform random access based on the slice group, and the UE needs the mapping relationship between the slice group and the slice for random access.

For example, when the UE NAS determines that cell reselection based on a slice group or a random access process based on a slice group is required, the UE NAS sends corresponding instruction information to the UE AS, and then the UE AS sends the instruction to the access network device. information.

Step 103: According to the instruction information sent by the UE, the access network device sends to the UE the mapping relationship between the slice group and the slice used for cell reselection in the tracking area where the UE is currently located and adjacent tracking areas and/or for random access. The mapping relationship between the input slice group and the slice.

For example, when the indication information indicates that the UE supports cell reselection based on the slice group, or the UE needs to perform cell reselection based on the slice group, or the UE needs the mapping relationship between the slice group and the slice used for cell reselection, the access network device reports to The UE sends the mapping relationship between slice groups and slices used for cell reselection in the tracking area where the UE is currently located and adjacent tracking areas.

For example, when the indication information indicates that the UE supports random access based on the slice group, or the UE needs to perform random access based on the slice group, or the UE needs the mapping relationship between the slice group and the slice for random access, the access network device reports to The UE sends the mapping relationship between the slice group and the slice used for random access in the tracking area where the UE is currently located and adjacent tracking areas.

In one example, the OAM device configures the mapping relationship between the slice group and the slice for cell reselection and the mapping relationship between the slice group and the slice for random access for the access network device. The access network device sends to the core network device the mapping relationship between the slice group and the slice used for cell reselection, and the mapping relationship between the slice group and the slice used for random access. The core network device then sends the mapping relationship between the slice group and the slice used for cell reselection and/or the mapping relationship between the slice group and the slice used for random access to the UE. The core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be an AMF.

As shown in Figure 11, a schematic diagram of the communication process is provided. Taking the core network device as AMF as an example, the introduction includes the following steps:

Step 111: The OAM device configures for the access network device the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access in the tracking area to which the access network device belongs. .

Step 112: The access network device sends to the AMF the mapping relationship between the slice group and the slice used for cell reselection, and the mapping relationship between the slice group and the slice used for random access.

For example, the access network device sends the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access in the tracking area to which the access network device belongs to the AMF.

Step 113: The UE may send indication information to the AMF.

When the UE sends the indication information to the AMF, the UE can directly send the indication information to the AMF, for example, through NAS signaling; it can also be that the UE first sends the indication information to the access network device, and then the access network device network device is sent to AMF.

For example, if the UE supports cell reselection and/or random access based on slice groups, it will set the flag bit of the corresponding capability to enable and send it to the access network device or AMF. Otherwise, it will set the flag bit of the corresponding capability. is disabled and sent to the access network device or AMF. In another example, when the UE does not support a certain capability (for example, does not support slice group-based random access or does not support slice group-based cell reselection), it may not send a message indicating that it does not support the capability to the access network device or AMF. If the UE does not support a certain capability, it can be considered that the UE does not support the capability.

For example, when the UE NAS determines that cell reselection based on a slice group or a random access process based on a slice group is required, the UE NAS sends corresponding instruction information to the UE AS, and then the UE AS sends the instruction to the access network device. information, the access network equipment can also send the indication information to the AMF.

Step 114: According to the instruction information, the AMF sends to the UE the mapping relationship between the slice group and the slice used for cell reselection in the tracking area where the UE is currently located and the adjacent tracking area and/or the slice group and slice used for random access. mapping relationship.

For example, when the indication information indicates that the UE supports cell reselection based on the slice group, or the UE needs to perform cell reselection based on the slice group, or the UE needs the mapping relationship between the slice group and the slice used for cell reselection, the AMF sends the required information to the UE. Describes the mapping relationship between slice groups and slices used for cell reselection in the tracking area where the UE is currently located and adjacent tracking areas.

For example, when the indication information indicates that the UE supports random access based on the slice group, or the UE needs to perform random access based on the slice group, When performing random access, or the UE needs the mapping relationship between the slice group and the slice used for random access, the AMF sends to the UE the slice group and slice used for random access in the tracking area where the UE is currently located and the adjacent tracking area. mapping relationship.

In one example, the OAM device configures the mapping relationship between the slice group and the slice for cell reselection and the mapping relationship between the slice group and the slice for random access for the core network device. The core network device sends to the access network device the mapping relationship between the slice group and the slice used for cell reselection, and the mapping relationship between the slice group and the slice used for random access. The access network device then sends the mapping relationship between the slice group and the slice used for cell reselection and/or the mapping relationship between the slice group and the slice used for random access to the UE. The core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be an AMF.

As shown in Figure 12, a schematic diagram of the communication process is provided. Taking the core network device as AMF as an example, the introduction includes the following steps:

Step 121: The OAM device configures the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access for the AMF.

Step 122: The AMF sends the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access to the access network device.

For example, the AMF sends the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access in the tracking area to which the access network device connected to the AMF belongs. Access network equipment connected to the AMF.

Step 123: The UE may send indication information to the access network device.

Step 124: According to the instruction information sent by the UE, the access network device sends to the UE the mapping relationship between the slice group and the slice used for cell reselection in the tracking area where the UE is currently located and adjacent tracking areas and/or for random access. The mapping relationship between the input slice group and the slice.

In one example, the OAM device configures the mapping relationship between the slice group and the slice for cell reselection and the mapping relationship between the slice group and the slice for random access for the core network device. The core network device sends to the UE the mapping relationship between the slice group and the slice used for cell reselection and/or the mapping relationship between the slice group and the slice used for random access. The core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be an AMF.

As shown in Figure 13, a schematic diagram of the communication process is provided. Taking the core network device as AMF as an example, the introduction includes the following steps:

Step 131: The OAM device configures the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access for the AMF.

Optionally, step 132: The AMF sends the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access to the access network device.

For example, the AMF sends the mapping relationship between the slice group and the slice used for cell reselection and the mapping relationship between the slice group and the slice used for random access in the tracking area to which the access network device connected to the AMF belongs. Access network equipment connected to the AMF. This process is to allow the access network equipment and the AMF to align their understanding of the slice group mapping relationship, and has nothing to do with how the UE obtains the slice group mapping relationship.

Step 133: The UE may send indication information to the AMF.

Step 134: According to the instruction information, the AMF sends to the UE the mapping relationship between the slice group and the slice used for cell reselection in the tracking area where the UE is currently located and the adjacent tracking area and/or the slice group and slice used for random access. mapping Tie.

For example, when the indication information indicates that the UE supports random access based on a slice group, or the UE needs to perform random access based on a slice group, or the UE needs a mapping relationship between a slice group and a slice for random access, the AMF sends the UE all the information. Describes the mapping relationship between slice groups and slices used for random access in the tracking area where the UE is currently located and adjacent tracking areas.

The following describes the method of configuring the priority of the slice group for cell reselection to the UE.

Since the slice group used for cell reselection has slice group priority, the slice group used for random access does not have slice group priority. The UE can determine whether a certain slice group has slice group priority. This slice group is used for cell reselection or random access.

The priority of the slice group configured for cell reselection and the mapping relationship between the slice group and slice configured for cell reselection can be configured in one message or in different messages.

In one example, OAM determines the priority of the slice group used for cell reselection, and sends the priority of the slice group used for cell reselection to the UE through the access network device or the core network device. The core network device may be an access management device (which may also be called a mobility management device, a mobility management network element, or an access management network element), and the core network device may be an AMF.

For example, OAM configures the priority of the slice group used for cell reselection to the access network device, and the access network device sends the priority of the slice group used for cell reselection to the UE.

For another example, OAM configures the priority of the slice group used for cell reselection to the access network device, and the access network device sends the priority of the slice group used for cell reselection to the core network device, and the core network device then sends the priority of the slice group used for cell reselection to the core network device. The priority of the slice group used for cell reselection is sent to the UE.

For another example, OAM configures the priority of the slice group for cell reselection to the core network device, and the core network device sends the priority of the slice group for cell reselection to the access network device, and the access network device then sends the priority of the slice group for cell reselection to the access network device. The priority of the slice group used for cell reselection is sent to the UE.

For another example, OAM configures the priority of the slice group used for cell reselection to the core network device, and the core network device sends the priority of the slice group used for cell reselection to the UE.

In another example, the access network device determines the priority of the slice group used for cell reselection, and sends the priority of the slice group used for cell reselection to the UE. For example, the access network device determines the priority of the slice group for cell reselection based on its own status (such as load conditions, carrier signal quality, etc.), and can also update the priority of the slice group for cell reselection based on a period or a specific threshold. priority. For example, the access network device directly sends the priority of the slice group used for cell reselection to the UE. For another example, the access network device sends the priority of the slice group used for cell reselection to the core network device, and then the core network device sends the priority of the slice group used for cell reselection to the UE.

In another example, the core network device determines the priority of the slice group used for cell reselection; the core network device directly sends the priority of the slice group used for cell reselection to the UE; or the core network device determines the priority of the slice group used for cell reselection. The priority of the reselected slice group is sent to the access network device, and then the access network device sends it to the UE. For example, the core network device determines the priority of the slice group for cell reselection based on the status of the access network device (such as load conditions, carrier signal quality, etc.) and/or slice subscription information.

The method in the embodiment of the present application is introduced above, and the device in the embodiment of the present application will be introduced below. The method and device are conceived based on the same technology. Since the principles of problem solving by the method and device are similar, the implementation of the device and method can be For mutual reference, repeated points will not be repeated.

Embodiments of the present application can divide the device into functional modules according to the above method examples. For example, the device can be divided into functional modules corresponding to each function, or two or more functions can be integrated into one module. These modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods during specific implementation.

Based on the same technical concept as the above method, see Figure 14, a schematic structural diagram of a communication device 1400 is provided. The device 1400 may include: a processing module 1410, optionally, a receiving module 1420a, a sending module 1420b, and a storage module 1430 . The processing module 1410 can be connected to the storage module 1430, the receiving module 1420a, and the sending module 1420b respectively. The storage module 1430 can also be connected to the receiving module 1420a and the sending module 1420b.

In an example, the above-mentioned receiving module 1420a and sending module 1420b can also be integrated together and defined as a transceiving module.

In an example, the device 1400 may be a UE AS, or may be a chip or functional unit applied in the UE AS. The device 1400 has any functions of the UE AS in the above method. For example, the device 1400 can perform various steps performed by the UE AS in the methods of FIG. 2, FIG. 3, FIG. 4 and FIG. 5.

The receiving module 1420a can perform the receiving action performed by the UE AS in the above method embodiment.

The sending module 1420b can perform the sending action performed by the UE AS in the above method embodiment.

The processing module 1410 can perform other actions except sending actions and receiving actions among the actions performed by the UE AS in the above method embodiment.

In one example, the receiving module 1420a is configured to receive first information from the non-access layer UE NAS of the terminal device during the cell reselection process based on the slice group, where the first information indicates the priority of the slice group. level; the processing module 1410 is used to update the frequency ranking of multiple frequency points based on the priority of the slice group, and the updated frequency ranking is used to perform the cell reselection process based on the slice group frequency point measurement and/or best cell evaluation; and based on the updated frequency point sorting, perform the cell reselection process based on the slice group.

In one example, before executing the cell reselection process based on the slice group based on the updated frequency sorting, the processing module 1410 is also configured to interrupt the ongoing cell reselection process based on the slice group. ; When the processing module 1410 is used to perform the cell reselection process based on the slice group based on the updated frequency sorting, it is specifically used to continue to execute the interrupted execution based on the slice group based on the updated frequency sorting. Group cell reselection process.

In one example, the processing module 1410 is specifically configured to: when the first frequency point is being measured but a measurement report of the first frequency point is not obtained, interrupt the measurement of the first frequency point; or, obtain the first frequency point. Frequency measurement report, but the evaluation of the best cell has not started, then the evaluation of the best cell will be interrupted; or, if the best cell is being evaluated, the evaluation of the best cell will be interrupted; or, the best cell has been evaluated and is currently stationed there. If the mobile phone detects the best cell, it will stop camping on the best cell.

In one example, before interrupting the ongoing cell reselection process based on the slice group, the processing module 1410 is further configured to determine that the timer has expired.

In one example, before interrupting the ongoing slice group-based cell reselection process, the receiving module 1420a is further configured to receive second information, the second information indicating interrupting the ongoing slice-based cell reselection process. Group cell reselection process.

In one example, before performing the cell reselection process based on the slice group based on the updated frequency ranking, the processing module 1410 is further configured to determine a plurality of second frequencies corresponding to the updated frequency ranking. points, compared with the plurality of second frequency points corresponding to the frequency point sorting before the update, changes; wherein the plurality of second frequency points include the third frequency point being measured. A frequency point and frequency points arranged after the first frequency point.

In one example, before updating the frequency ordering of multiple frequency points based on the priority of the slice group, the processing module 1410 is further configured to determine the priority of the slice group indicated by the first information. The priority level is higher than the priority of the slice group referenced in the cell reselection process based on the slice group.

In one example, the storage module 1430 can store computer execution instructions for the method executed by the UE AS, so that the processing module 1410, the receiving module 1420a and the sending module 1420b execute the method executed by the UE AS in the above example.

For example, the storage module may include one or more memories, and the memories may be devices used to store programs or data in one or more devices or circuits. The storage module can be a register, cache or RAM, etc., and the storage module can be integrated with the processing module. The storage module can be a ROM or other types of static storage devices that can store static information and instructions, and the storage module can be independent from the processing module.

The transceiver module may be an input or output interface, a pin or a circuit, etc.

In an example, the device 1400 may be a UE MAC, or may be a chip or functional unit applied in the UE MAC. The device 1400 has any functions of the UE MAC in the above method. For example, the device 1400 can perform various steps performed by the UE MAC in the methods of FIG. 6, FIG. 7, FIG. 8 and FIG. 9.

The receiving module 1420a can perform the receiving action performed by the UE MAC in the above method embodiment.

The sending module 1420b can perform the sending action performed by the UE MAC in the above method embodiment.

The processing module 1410 can perform other actions except sending actions and receiving actions among the actions performed by the UE MAC in the above method embodiment.

In one example, the storage module 1430 can store computer execution instructions for the method executed by the UE MAC, so that the processing module 1410, the receiving module 1420a and the sending module 1420b execute the method executed by the UE MAC in the above example.

In one example, the device 1400 may be a target access network device, or may be a chip or functional unit applied in the target access network device. The device 1400 has any functions of the target access network equipment in the above method.

The receiving module 1420a can perform the receiving action performed by the target access network device in the above method embodiment.

The sending module 1420b can perform the sending action performed by the target access network device in the above method embodiment.

The processing module 1410 may perform other actions except sending actions and receiving actions among the actions performed by the target access network device in the above method embodiment.

In one example, the storage module 1430 can store computer execution instructions of the method executed by the target access network device, so that the processing module 1410, the receiving module 1420a and the sending module 1420b execute the execution of the method performed by the target access network device in the above example. Methods.

As a possible product form, the device can be implemented by a general bus architecture.

As shown in Figure 15, a schematic block diagram of a communication device 1500 is provided.

The device 1500 may include a processor 1510 and, optionally, a transceiver 1520 and a memory 1530. The transceiver 1520 can be used to receive programs or instructions and transmit them to the processor 1510, or the transceiver 1520 can be used to communicate and interact with other communication devices between the device 1500, such as interactive control signaling and/or services. Data etc. The transceiver 1520 may be a code and/or data read and write transceiver, or the transceiver 1520 may be a signal transmission transceiver between a processor and a transceiver. The processor 1510 and the memory 1530 are electrically coupled.

In an example, the device 1500 may be a UE AS, or may be a chip applied in the UE AS. It should be understood that this device has any functions of the UE AS in the above method. For example, the device 1500 can perform various steps performed by the UE AS in the above methods of Figures 2, 3, 4 and 5. As an example, the memory 1530 is used to store computer programs; the processor 1510 can be used to call the computer program or instructions stored in the memory 1530 to execute the method performed by the UE AS in the above example, or through the The transceiver 1520 performs the method performed by the UE AS in the above example.

In an example, the device 1500 may be a UE MAC, or may be a chip applied in the UE MAC. It should be understood that the device has any functions of the UE MAC in the above method. For example, the device 1500 can perform various steps performed by the UE MAC in the methods of FIG. 6, FIG. 7, FIG. 8 and FIG. 9. As an example, the memory 1530 is used to store computer programs; the processor 1510 can be used to call the computer program or instructions stored in the memory 1530 to execute the method performed by the UE MAC in the above example, or through the The transceiver 1520 performs the method performed by the UE MAC in the above example.

The processing module 1410 in Figure 14 can be implemented by the processor 1510.

The receiving module 1420a and the sending module 1420b in Figure 14 can be implemented by the transceiver 1520. Alternatively, the transceiver 1520 is divided into a receiver and a transmitter, the receiver performs the function of the receiving module, and the transmitter performs the function of the transmitting module.

The storage module 1430 in Figure 14 can be implemented through the memory 1530.

As a possible product form, the device can be implemented by a general-purpose processor (a general-purpose processor can also be called a chip or a chip system).

In a possible implementation, the general processor implemented in the device of the UE AS or the device of the UE MAC includes: a processing circuit (the processing circuit may also be called a processor); optionally, it also includes: and the processing The circuit is internally connected to an input and output interface for communication and a storage medium (the storage medium can also be called a memory). The storage medium is used to store instructions executed by the processing circuit to execute the method executed by the UE AS or UE MAC in the above example.

The processing module 1410 in Figure 14 can be implemented by a processing circuit.

The receiving module 1420a and the sending module 1420b in Figure 14 can be implemented through input and output interfaces. Alternatively, the input and output interface is divided into an input interface and an output interface. The input interface performs the function of the receiving module, and the output interface performs the function of the sending module.

The storage module 1430 in Figure 14 can be implemented through a storage medium.

As a possible product form, the device of the embodiment of the present application can also be implemented using the following: one or more FPGAs (Field Programmable Gate Arrays), PLDs (Programmable Logic Devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuit, or any combination of circuits capable of performing the various functions described throughout this application.

Embodiments of the present application also provide a computer-readable storage medium storing a computer program. The computer program When executed by a computer, the computer can be used to execute the above communication method. In other words: the computer program includes instructions for implementing the above communication method.

An embodiment of the present application also provides a computer program product, which includes: computer program code. When the computer program code is run on a computer, the computer can execute the communication method provided above.

Embodiments of the present application also provide a communication system. The communication system includes: UE AS and UE NAS that execute the above communication method; or the communication system includes: UE MAC and UE upper layer that execute the above communication method.

In addition, the processor mentioned in the embodiments of this application may be a central processing unit (CPU), a baseband processor. The baseband processor and the CPU may be integrated together or separated, or may be a network processor (network processor). processor, NP) or a combination of CPU and NP. The processor may further include a hardware chip or other general-purpose processor. The above-mentioned hardware chip can be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) and other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. or any combination thereof. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

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

The transceiver mentioned in the embodiment of this application may include a separate transmitter and/or a separate receiver, or the transmitter and receiver may be integrated. The transceiver can work under the instructions of the corresponding processor. Optionally, the transmitter can correspond to the transmitter in the physical device, and the receiver can correspond to the receiver in the physical device.

Those of ordinary skill in the art will appreciate that the method steps and units described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software, or a combination of both. In order to clearly illustrate the possible functions of hardware and software, Interchangeability, in the above description, the steps and compositions of each embodiment have been generally described according to functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. One of ordinary skill in the art may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed Or the mutual coupling or direct coupling or communication connection discussed may be indirect coupling or communication connection through some interfaces, devices or units, or it may be electrical, mechanical or other forms of connection.

The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple mobile management devices. . Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

In addition, each functional unit in various embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several The instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

"And/or" in this application describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist simultaneously, and B alone exists. situation. The character "/" generally indicates that the related objects are in an "or" relationship. The plurality mentioned in this application refers to two or more than two. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating. Or suggestive order.

Claims

A communication method, characterized by including:

In the cell reselection process based on the slice group, the access layer UE AS of the terminal device receives first information from the non-access layer UE NAS of the terminal device, the first information indicating the priority of the slice group;

The UE AS updates the frequency point sorting of multiple frequency points based on the priority of the slice group. The updated frequency point sorting is used to perform frequency point measurement and/or in the cell reselection process based on the slice group. or best neighborhood assessment;

The UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting.
The method according to claim 1, characterized in that, before the UE AS performs the cell reselection process based on the slice group based on the updated frequency sorting, it also includes:

The UE AS interrupts the ongoing cell reselection process based on the slice group;

The UE AS performs the cell reselection process based on the slice group based on the updated frequency point sorting, including:

The UE AS continues to execute the interrupted cell reselection process based on the slice group based on the updated frequency point sorting.
The method of claim 2, wherein the UE AS interrupts the ongoing cell reselection process based on the slice group, including:

The UE AS is measuring the first frequency point but does not obtain the measurement report of the first frequency point, then the UE AS stops measuring the first frequency point; or,

If the UE AS obtains the measurement report of the first frequency point but does not start to evaluate the best cell, then the UE AS interrupts and starts to evaluate the best cell; or,

The UE AS is evaluating the best cell, then the UE AS stops evaluating the best cell; or,

If the UE AS has evaluated the best cell and is camping on the best cell, the UE AS will stop camping on the best cell.
The method according to claim 2 or 3, characterized in that, before the UE AS interrupts the ongoing cell reselection process based on the slice group, it further includes:

The UE AS determines that the timer has expired.
The method according to claim 2 or 3, characterized in that, before the UE AS interrupts the ongoing cell reselection process based on the slice group, it further includes:

The UE AS receives second information, and the second information indicates to interrupt the ongoing cell reselection process based on the slice group.
The method according to any one of claims 1 to 5, characterized in that, before the UE AS performs the cell reselection process based on the slice group based on the updated frequency point sorting, it also includes:

The UE AS determines that the plurality of second frequency points corresponding to the frequency point sorting after the update have changed compared with the plurality of second frequency points corresponding to the frequency point sorting before the update; wherein, the plurality of second frequency points It includes the first frequency point being measured and the frequency points arranged after the first frequency point.
The method according to any one of claims 1 to 6, characterized in that, before the UE AS updates the frequency ranking of multiple frequency points based on the priority of the slice group, it also includes:

The UE AS determines that the priority of the slice group indicated by the first information is higher than the priority of the slice group referenced in the cell reselection process based on the slice group.
A communication device, characterized by including:

A receiving module configured to receive first information from the non-access layer UE NAS of the terminal device during the cell reselection process based on the slice group, where the first information indicates the priority of the slice group;

A processing module configured to update the frequency ranking of multiple frequency points based on the priority of the slice group. The updated frequency ranking is used to perform frequency point measurement and calculation in the cell reselection process based on the slice group. /or best cell evaluation; and based on the updated frequency point ranking, perform the cell reselection process based on the slice group.
The apparatus according to claim 8, wherein before executing the cell reselection process based on the slice group based on the updated frequency point sorting, the processing module is further configured to interrupt the currently executing cell reselection process based on the slice group. Cell reselection process for slice groups;

The processing module, when used to perform the cell reselection process based on the slice group based on the updated frequency sorting, is specifically used to continue executing the interrupted execution based on the slice group based on the updated frequency sorting. cell reselection process.
The device according to claim 9, characterized in that the processing module is specifically used for:

If the first frequency point is being measured but the measurement report of the first frequency point is not obtained, then the measurement of the first frequency point is interrupted; or,

If the measurement report of the first frequency point is obtained but the evaluation of the best cell has not started, the evaluation of the best cell will be interrupted; or,

If the best cell is being evaluated, stop evaluating the best cell; or,

The best cell has been evaluated and is camping on the best cell, then camping on the best cell is interrupted.
The apparatus according to claim 9 or 10, characterized in that, before interrupting the ongoing cell reselection process based on the slice group, the processing module is further configured to determine that the timer has expired.
The device according to claim 10 or 11, characterized in that, before interrupting the ongoing cell reselection process based on the slice group, the receiving module is further configured to receive second information, and the second information Indicates to interrupt the ongoing cell reselection process based on the slice group.
The device according to any one of claims 8 to 12, characterized in that, before executing the cell reselection process based on the slice group based on the updated frequency point sorting, the processing module is also used to determine the updated The plurality of second frequency points corresponding to the subsequent frequency point sorting have changed compared with the plurality of second frequency points corresponding to the frequency point sorting before the update; wherein the plurality of second frequency points include the first frequency point being measured. The frequency points and the frequency points arranged after the first frequency point.
The device according to any one of claims 8 to 13, characterized in that, before updating the frequency ranking of multiple frequency points based on the priority of the slice group, the processing module is also used to determine the The priority of the slice group indicated by the first information is higher than the priority of the slice group referenced in the cell reselection process based on the slice group.
A communication device, characterized by comprising a processor coupled to a memory;

The memory is used to store computer programs or instructions;

The processor is used to execute part or all of the computer programs or instructions in the memory. When the part or all of the computer programs or instructions are executed, it is used to implement the method described in any one of claims 1-7. method.
A communication device, characterized by including a processor and a memory;

The memory is used to store computer programs or instructions;

The processor is used to execute part or all of the computer programs or instructions in the memory. When the part or all of the computer programs or instructions are executed, it is used to implement the method described in any one of claims 1-7. method.
A chip system, characterized in that the chip system includes: a processing circuit; the processing circuit is coupled to a storage medium;

The processing circuit is used to execute part or all of the computer programs or instructions in the storage medium. When the When part or all of the computer program or instructions are executed, they are used to implement the method according to any one of claims 1-7.
A computer-readable storage medium, characterized in that it is used to store a computer program, and the computer program includes instructions for implementing the method according to any one of claims 1-7.
A computer program product, characterized in that the computer program product includes: computer program code, which when the computer program code is run on a computer, causes the computer to execute the method according to any one of claims 1-7.