WO2023133861A1 - 信息传输方法、装置、通信设备和存储介质 - Google Patents

信息传输方法、装置、通信设备和存储介质 Download PDF

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Publication number
WO2023133861A1
WO2023133861A1 PCT/CN2022/072181 CN2022072181W WO2023133861A1 WO 2023133861 A1 WO2023133861 A1 WO 2023133861A1 CN 2022072181 W CN2022072181 W CN 2022072181W WO 2023133861 A1 WO2023133861 A1 WO 2023133861A1
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Prior art keywords
network slice
registered
specific area
statistical information
information
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PCT/CN2022/072181
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English (en)
French (fr)
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沈洋
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/072181 priority Critical patent/WO2023133861A1/zh
Priority to CN202280000169.XA priority patent/CN116762384A/zh
Publication of WO2023133861A1 publication Critical patent/WO2023133861A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning

Definitions

  • the present application relates to the technical field of wireless communication but is not limited to the technical field of wireless communication, and in particular relates to an information transmission method, device, communication device and storage medium.
  • Network slicing can provide complete network functions, such as radio access network functions, core network functions, and Internet Protocol Multimedia System (IMS, Internet Protocol Multimedia Subsystem) functions.
  • IMS Internet Protocol Multimedia Subsystem
  • a network can support one or more network slices.
  • Network slices can provide different committed services and can be dedicated to specific users. Slices with the same service or slice but with different slice identifiers may have different Single Network Slice Selection Assistance Information (S-NSSAI, Single Network Slice Selection Assistance Information).
  • S-NSSAI Single Network Slice Selection Assistance Information
  • a mobile network operator can deploy multiple network slices that provide the same functions. Multiple network slices can represent different UE groups. Multiple network slices can each offer different committed services and/or be dedicated to clients. Different network slices with the same slice function have different S-NSSAI, or the network slices may have the same service type but different slice identifiers.
  • the embodiments of the present disclosure provide an information transmission method, device, communication device, and storage medium.
  • NSACF Network Slice Admission Control Function
  • the indication information of the specific area determine the statistical information of the user equipment (UE, User Equipment) registered within the range of the specific area based on the network slice.
  • UE User Equipment
  • an information transmission method is provided, wherein the method is executed by an Access and Mobility Management Function (AMF, Access and Mobility Management Function), and the method includes:
  • AMF Access and Mobility Management Function
  • the statistical information update request is used to instruct the NSACF to determine the statistical information of UEs registered in the specific area based on the network slice according to the specific area indication information.
  • an information transmission device including:
  • the processing module is configured to determine, according to the indication information of the specific area, the statistical information of UEs registered in the specific area based on the network slice.
  • an information transmission device wherein the device includes:
  • the third sending module is configured to send a statistical information update request, where the statistical information update request is used to instruct the NSACF to determine the statistical information of UEs registered in a specific area based on the network slice according to specific area indication information.
  • a communication device including a processor, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor runs the executable program
  • the steps of the information transmission method described in the first aspect or the second aspect are executed when the program is executed.
  • a storage medium on which an executable program is stored, wherein, when the executable program is executed by a processor, the information transmission method as described in the first aspect or the second aspect is implemented. A step of.
  • the NSACF determines the statistical information of the user equipment (UE) registered in the specific area based on the network slice. In this way, compared with only determining the statistical information of the entire network slice and determining the statistical information of UEs registered in a specific area based on the network slice, NSACF can obtain the statistical information of a specific area smaller than the granularity of the entire network slice, and then based on the specific area range Manage network resources based on statistical information in the network to meet the fine-grained management requirements for network operations and services.
  • UE user equipment
  • Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment
  • Fig. 2 is a schematic flowchart of an information transmission method according to an exemplary embodiment
  • Fig. 3 is a schematic flowchart of another information transmission method according to an exemplary embodiment
  • Fig. 4 is a schematic flowchart of another information transmission method according to an exemplary embodiment
  • Fig. 5 is a schematic flowchart of another information transmission method according to an exemplary embodiment
  • Fig. 6 is a schematic flowchart of another information transmission method according to an exemplary embodiment
  • Fig. 7 is a schematic flowchart of another information transmission method according to an exemplary embodiment
  • Fig. 8 is a schematic flowchart of another information transmission method according to an exemplary embodiment
  • Fig. 9 is a schematic flowchart of another information transmission method according to an exemplary embodiment.
  • Fig. 10 is a block diagram of an information transmission device according to an exemplary embodiment
  • Fig. 11 is a block diagram of another information transmission device according to an exemplary embodiment
  • Fig. 12 is a block diagram showing an apparatus for information transmission according to an exemplary embodiment.
  • first, second, third, etc. may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12 .
  • the terminal 11 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 11 can communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the terminal 11 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or called a "cellular" phone) and a
  • the computer of the IoT terminal for example, may be a fixed, portable, pocket, hand-held, built-in computer or vehicle-mounted device.
  • Station For example, Station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), an access terminal (access terminal), a user device (user terminal), a user agent (user agent), a user device (user device), or a user terminal (user equipment, UE).
  • the terminal 11 may also be a device of an unmanned aerial vehicle.
  • the terminal 11 may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless communication device connected externally to the trip computer.
  • the terminal 11 may also be a roadside device, for example, it may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.
  • the base station 12 may be a network side device in a wireless communication system.
  • the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication, 4G) system, also known as a Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as new radio (NR) system or 5G NR system.
  • the wireless communication system may also be a next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
  • the MTC system the MTC system.
  • the base station 12 may be an evolved base station (eNB) adopted in a 4G system.
  • the base station 12 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • eNB evolved base station
  • gNB base station
  • the base station 12 adopts a centralized distributed architecture it generally includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link layer control protocol (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer protocol stack;
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • a physical (Physical, PHY) layer protocol stack is set in the unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12 .
  • a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as
  • the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a technical standard of a next-generation mobile communication network based on 5G.
  • an E2E (End to End, end-to-end) connection can also be established between the terminals 11.
  • V2V vehicle to vehicle, vehicle-to-vehicle
  • V2I vehicle to Infrastructure, vehicle-to-roadside equipment
  • V2P vehicle to pedestrian, vehicle-to-person communication in vehicle to everything (V2X) communication Wait for the scene.
  • the above wireless communication system may further include a network management device 13 .
  • the network management device 13 may be a core network device in the wireless communication system, for example, the network management device 13 may be a core network device in the wireless communication system, for example, an access and mobility management function (AMF, Access and Mobility Management Function), session management function (SMF, Session Management Function), user plane function (UPF, User Plane Function), policy control function (PCF, Policy Control Function), network storage function (NRF, Network Repository Function), etc.
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • NRF Network Repository Function
  • Executors involved in the embodiments of the present disclosure include, but are not limited to: mobile phone terminals in a cellular mobile communication system, and network-side devices, such as access network devices such as base stations, and core networks.
  • the statistical information includes: registration of network slices The number of users, the number of activated PDU sessions, the number of registered users in the network slice and/or the ratio of the number of activated PCU sessions to the overall threshold of the network slice, etc.
  • the statistical information for the network slice is based on the granularity of the entire network slice, that is, the statistics are the coverage information of the entire network slice.
  • Statistical information based on the entire network slice often cannot truly meet the requirements of operators and services, especially the requirements of service characteristics in specific scenarios, so that resources cannot be allocated correspondingly according to the network status to achieve the purpose of improving user service experience.
  • operators usually have resource elastic configuration and service QoS guarantees for a specific area in the network slice, such as provinces, cities, specific venues, and schools. Operators need to obtain statistical data such as the specific number of registered users in the specific area to learn and monitor real-time network conditions in the area, but related technologies cannot meet the needs of operators for statistical data.
  • this exemplary embodiment provides an information transmission method that can be executed by the NSACF of the cellular mobile communication system, including:
  • Step 201 According to specific area indication information, determine statistical information of UEs registered in a specific area based on a network slice.
  • the NSACF can be used to manage UEs and PDU sessions registered in the network slice, for example, to control the number of UEs registered in the network slice.
  • the NSACF may be the only NSACF deployed in the network slice, and the NSACF may also be one or more of multiple NSACFs deployed in the network slice.
  • NSACFs may be deployed in the operator's network.
  • One NSACF may serve one or more network slices in one service area.
  • a network slice is handled by only one NSACF.
  • the S-NSSAI of different network slices are different.
  • NSACF can be an NSACF instance or an NSACF set.
  • a PLMN can have one or more service areas.
  • Specific area indication information may be used to indicate a specific area.
  • the network resources of a specific area are smaller than the network resources of the entire network slice. That is, a specific area is smaller than the coverage of the entire network slice resource.
  • the network slice may include N service areas, and the specific area may be one or M of the N service areas, where M is smaller than N, and M and N are positive integers.
  • the statistical information may be a statistical result of the NSACF on UEs registered in a specific area of the network slice.
  • the statistical information may include but not limited to at least one of the following information: types of UEs registered within a specific area, proportions of UEs of different types registered within a specific area, and the number of UEs registered within a specific area.
  • the statistical information includes: the number of registered UEs within the specific area.
  • the NSACF can count the number of UEs registered in a specific area of the network slice. NSACF can configure corresponding resources based on the determined number of UEs; it can also manage and control UEs registered in a specific area of the network slice; for example, adjust the number of UEs registered in a specific area of the network slice, etc. In this way, the ability to elastically configure resources in a specific area is improved, thereby improving the quality of service (QoS).
  • QoS quality of service
  • the NSACF may trigger NSAC based on an external trigger mechanism, and the NSAC may include: determining statistical information of registered UEs within a specific area, and the like.
  • different UEs may exist in the form of different users. Different users can have different identities, such as UE ID, etc.
  • the statistical information of registered UEs may also be referred to as statistical information of registered users. For example, the number of UEs registered within the specific area may be determined based on the UE IDs of the UEs registered within the specific area.
  • the above scheme can determine the statistical information of UEs registered in a specific area based on the network slice, and the NSACF can obtain the statistical information of a specific area smaller than the granularity of the entire network slice, and then based on Statistical information within a specific area is used for network resource management to meet the refined management requirements of network operations and services.
  • the specific area indication information includes at least one of the following:
  • IDentifier IDentifier
  • Tracking Area ID (TAI, Tracking Area ID);
  • AoI Area Of Interest
  • the identifier of the geographic area is the identifier of the geographic area.
  • the specific area indication information may include multiple cell IDs for indicating multiple cells.
  • the geographic area indicated by the identifier of the geographic area may be a geographic area that can be mapped to a service area. In this way, the NSACF may determine statistical information based on the mapped service area.
  • the NSACF may determine the statistical information of UEs registered in the specific area based on the specific area indication information. Realize UE information statistics at a finer granularity than the entire network slice. Meet the refined management requirements of network operations and services.
  • the specific area indication information is pre-stored in the NSACF;
  • the specific area indication information is determined based on a communication protocol
  • the specific region indication information is received from a consumer network function.
  • the specific area indication information may be pre-stored in the NSACF, and when the NSACF is triggered, the specific area is determined through the pre-stored specific area indication information.
  • the specific area indication information can also be determined according to the communication protocol, and when the NSACF is triggered, the specific area is determined through the communication protocol or the calculation method given in the communication protocol.
  • Consumer network functions may include: network exposure function (NEF, Network Exposure Function), policy decision function (PCF, Policy Decision Function), operation and maintenance management system (OAM, Operation Administration and Maintenance) and/or multiple NSACF deployment scenarios Master NSACF.
  • NEF network exposure function
  • PCF Policy Decision Function
  • OAM operation and maintenance management system
  • Master NSACF multiple NSACF deployment scenarios Master NSACF.
  • Consumer network functions can determine specific regions based on their own needs. And instruct NSACF to go to a specific area through the specific area indication information.
  • the method also includes:
  • the NSACF After the NSACF determines the statistical information, it can feed back to the AMF for reference in decision-making by the AMF. For example, the AMF can determine whether it is possible to add UEs to a specific area according to whether the number of registered UEs in a specific area exceeds a predetermined threshold.
  • the determination is based on statistical information of registered UEs within a specific area of the network slice, including:
  • the NSACF determines the statistical information of UEs registered in a specific area based on the network slice, which may be triggered by the AMF or other network entities. If triggered by AMF, the statistical information update request is AMF sends a statistical information update request to NSACF based on UE registration or UE de-registration or update UE configuration events. The statistical information update request is used to trigger NSACF to execute NSAC, and then determine the statistics information.
  • Step 302 The NSACF receives a statistical information update request from the AMF, and triggers the NSACF to determine the number of UEs registered in a specific area of the network slice; for example, the statistical information update request may be: Nnsacf_NSAC_NumOfUEsUpdate_Request.
  • the statistical information update request is received from the AMF, and is used to instruct the NSACF to perform a validity check and update process of registered UEs in a slice-specific area.
  • Step 303 Based on the statistics update request, the NSACF performs the validity check and update process of the registered UEs in the specific area of the slice, that is, determines the number of registered UEs in the specific area of the network slice.
  • Step 304 NSACF may send a response message of the statistics update request to the AMF, indicating to the AMF the number of registered UEs in the determined specific area, etc.; for example, the response message of the statistics update request may be: Nnsacf_NSAC_NumOfUEsUpdate_Response.
  • the AMF is triggered according to the following event: based on UE registration to the network slice.
  • the AMF may first determine the network slice corresponding to the registration operation, and send a statistical information update request to the network slice corresponding to the registration operation.
  • the statistics update request may explicitly or implicitly indicate an increase in the number of UEs.
  • the statistical information update request may use a predetermined bit to indicate the increase in the number of registered UEs, or use the UE registration request as the statistical information update request to implicitly indicate the increase in the number of registered UEs.
  • the SMF may first perform the discovery of the NSACF.
  • the UE can trigger the AMF to start the statistics process of the registered UE in a specific area.
  • the UE may indicate to the AMF the slice identifier of the network slice for the registration operation, and the AMF determines the network slice for the registration operation based on the slice identifier, and then determines the NSACF corresponding to the network slice. Then, the AMF sends a statistical information update request to the NSACF of the determined network slice.
  • the slice identifier of the network slice may include S-NSSAI, and/or a slice identifier, and the like.
  • the statistical information update request may be carried in the operation information for the network slicing operation. For example, when the UE registers to the network slice, the statistical information update request may be carried in the registration request.
  • the registration of the UE to the network slice may include initial registration of the UE into the network slice, or registration of a mobile registration update type caused by the handover of the UE across AMFs, and the like.
  • the registration of the UE in the network slice will cause changes in the statistical information of the registered UEs in a specific area. Therefore, the AMF may instruct the NSACF to determine the statistical information of the registered UEs in a specific area.
  • the NSACF may determine the statistical information of the UE registered in a specific area before the UE is registered in the network slice, or determine the UE registered in a specific area after the UE is registered in the network slice stats.
  • the specific steps for the NSACF to determine the statistical information of the registered UE in a specific area include:
  • Step 402 NSACF receives a statistical information update request from AMF, such as Nnsacf_NSAC_NumOfUEsUpdate_Request, and the statistical information update request is used to trigger NSACF to determine the statistical information of UEs registered in a specific area of the network slice; the statistical information update request can be indicated to NSACF in an explicit or implicit manner The UE performs network slice registration.
  • AMF such as Nnsacf_NSAC_NumOfUEsUpdate_Request
  • the statistical information update request is generated by the AMF according to the network slice registration request sent by the UE, wherein the network slice registration request is a registration process initiated by the UE to one or some network slices.
  • AMF can perform NSACF discovery and selection based on parameters such as slice identifier and NSACF characteristics, determine the network slice that UE needs to register, and trigger the validity check and update process of the number of registered users in a specific area.
  • the S-NSSAI of the network slice requesting registration can be carried in the registration request sent by the UE, and the AMF can first determine whether the S-NSSAI exists in the Allowed NSSAI, and if so, then Step 402 is executed to request the NSACF to determine statistical information of UEs registered in a specific area. Otherwise, UE registration may be rejected.
  • the statistical information update request may include: UE identification information such as UE ID, access type, S-NSSAI for network slicing requesting NSAC, AMF identification and update flag.
  • the UE may request registration of multiple network slices at the same time.
  • the update flag can be used to indicate that a UE is added to the network slice, that is, the UE is registered in the network slice.
  • the AMF in response to the initial exchange between the AMF and the NSACF of the network slice, requesting to execute the NSAC process, for example, sending a statistical information update request to the network slice for the first time, the AMF may carry early validity in the statistical information update request Check (EAC, Early Admission Control) the NF information of the relevant endpoints that need to be notified, and thus implicitly subscribe to the EAC-related notifications of the network slice from NSACF, such as whether EAC is activated or not.
  • EAC Early Admission Control
  • Step 403 Based on the statistical information update request, the NSACF performs the validity check and update process of the registered UEs in the specific area of the slice, and determines the statistical information of the registered UEs in the specific area of the network slice, such as the number of registered UEs.
  • the NSACF In response to UEs being registered in the network slice, the NSACF updates the number of registered UEs in the network slice. And confirm the number of registered UEs in a specific area of the network slice.
  • the NSACF may determine whether to allow the UE to register based on the status of the network slice, such as the load of the network slice, the number of existing UEs in the slice, and the like.
  • Step 404 After the NSACF determines the statistics information of the registered UEs in the specific area of the network slice, it sends a response message to the AMF to update the statistics information.
  • the response message may include: the determined number of registered UEs in the specific area, and/or UE registration results, and the like.
  • the network slice based on the statistical information update request triggered by UE registration to the network slice, it carries the location information of the UE registered to the network slice;
  • the determination is based on statistical information of registered UEs within a specific area of the network slice, including:
  • the location information may be used to indicate the location of the UE requesting registration. If the location of the UE requesting registration corresponds to a specific area, the UE is counted; otherwise, the UE is not counted.
  • the location of the UE requesting registration corresponds to a specific area, including: the location of the UE requesting registration is located within the range of the specific area, and the like.
  • the UE may request to register in the network slice. Since the specific area range is only a part of the entire network slice, the location of the UE may be located outside the specific area range, then , when the NSACF determines the statistical information of UEs registered in a specific area, it may not count the UEs. If the location of the UE is within a specific area, the UE needs to be counted.
  • Whether to count the UE is determined according to the location information of the UE, which can improve the accuracy of the NSAC in determining statistical information.
  • the location information includes at least one of the following:
  • the statistical information update request carries the location information of the UE of the registered user, and the UE location information is at least one of the following information: cell information and tracking area information.
  • the base station may send the location information of the UE registered to the network slice to the AMF. Then sent by AMF to NSACF.
  • the location information of the UE registered to the network slice may be acquired by the AMF from a Gateway Mobile Location Center (GMLC, Gateway Mobile Location Center).
  • GMLC Gateway Mobile Location Center
  • the determination is based on statistical information of registered UEs within a specific area of the network slice, including:
  • EAC Early Validity Check
  • the statistical information is determined when the UE is registered with the network slice.
  • EAC Early validity check
  • NSACF Early Admission Control
  • EAC Early Admission Control
  • NSACF can determine that EAC has been completed, and the statistical information update request is authentic, so the statistical information can be determined before the registration operation; otherwise, NSACF needs to perform authentication and other checks, the NSACF can determine the statistical information before and after the registration operation, so that the work efficiency of the NSACF can be improved.
  • the statistical information update request is triggered by the AMF according to the following event: based on UE registration to the network slice.
  • De-registration of the UE may be initiated by the UE or by the network.
  • the AMF may send a statistical information update request to the NSACF to instruct the NSACF to determine the statistical information.
  • the statistics update request may explicitly or implicitly indicate a reduction in the number of UEs.
  • the UE or the network can trigger the AMF to start the statistical process of UE registration in a specific area.
  • the UE or the network can indicate to the AMF the slice identifier of the network slice for the de-registration operation, and the AMF determines the network slice for the de-registration operation based on the slice identifier, and then the AMF sends a statistical information update request to the determined network slice.
  • the slice identifier of the network slice may include S-NSSAI, and/or a slice identifier, and the like.
  • the AMF may instruct the NSACF to determine the statistical information of UEs registered in a specific area.
  • the NSACF may determine statistical information of UEs registered in a specific area after the UE is deregistered from the network slice.
  • the specific steps for the NSACF to determine the statistical information of the registered UE in a specific area include:
  • Step 502 NSACF receives the statistical information update request sent by AMF, such as Nnsacf_NSAC_NumOfUEsUpdate_Request, the statistical information update request is used to trigger NSACF to determine the statistical information of UEs registered in a specific area of the network slice; the statistical information update request can be sent to The NSACF indicates to the network slice that the number of UEs has changed due to UE de-registration.
  • the statistical information update request is determined by the AMF according to the de-registration of the UE from the network slice.
  • the AMF can send information indicating successful de-registration to the UE; during the de-registration process, the AMF can determine the network slice for the UE to register, and trigger the AMF to send the number of registered users in a specific area to the network NSACF Validity check and update process.
  • the statistical information update request may include: UE identification information such as UE ID, access type, S-NSSAI for network slicing requesting NSAC, AMF identification and update flag. .
  • the update flag can be used to indicate that the number of UEs decreases, that is, the UEs are deregistered from the network slice.
  • Step 503 Based on the statistical information update request, the NSACF performs the validity check and update process of the registered UEs in the specific area of the slice, and determines the statistical information of the registered UEs in the specific area, such as the number of registered UEs.
  • the NSACF In response to UE de-registering from the network slice, the NSACF updates the number of registered UEs in the network slice, and confirms the number of registered UEs in a specific area of the network slice.
  • Step 504 After the NSACF determines the statistics information of the registered UEs in the specific area of the network slice, it sends a response message to the AMF to update the statistics information.
  • the response message may include: the determined number of registered UEs in the specific area, and the like.
  • the statistical information update request is triggered by the AMF according to the following event: UE configuration is updated based on the network slice.
  • the UE configuration may include: network slice configuration associated with the UE on the network side.
  • a change in the Network Slice-Specific Authentication and Authorization (Network Slice-Specific Authentication and Authorization) procedure or the subscription S-NSSAI procedure may trigger UE configuration update.
  • the NSACF can determine the statistical information of UEs registered within a specific area.
  • the NSACF may receive the statistical information update request sent by the AMF, and the NSACF may determine the statistical information of UEs registered within a specific area. NSACF can send statistical information to AMF.
  • the determination is based on statistical information of registered UEs within a specific area of the network slice, including:
  • the statistical information is determined after updating the UE configuration in response to the EAC not being activated.
  • EAC Early Admission Control
  • NSACF may be a security check before the NSACF performs complete authentication. If, EAC is activated, when NSACF receives the statistical information update request, it can determine that EAC has been completed, and the statistical information update request is authentic, so the statistical information can be determined before updating the UE configuration; otherwise, NSACF needs Perform authentication and other checks, NSACF can determine the statistical information after updating the UE configuration
  • the NSAC performed includes: determining statistical information of UEs registered within a specific area of the network slice.
  • the statistical information update request carries a slice identifier
  • the determination is based on statistical information of registered UEs within a specific area of the network slice, including:
  • the statistical information update request sent by the NSACF received by the AMF may carry the slice identifier of the network slice for which the statistical information needs to be determined.
  • the slice identifier may include: S-NSSAI, a slice identifier, and the like.
  • the NSACF can determine the network slice for which statistical information needs to be determined according to the slice identifier. Since the NSACF may correspond to multiple network slices, therefore, indicating the network slice through the slice identifier can improve the accuracy of the AMF indication.
  • the specific area range of the network slice has a maximum number of registered users allowed to register UEs.
  • the NSACF may configure the maximum number of registered users with registered UEs for a specific area, that is, the maximum number threshold allowed to be registered within a specific area.
  • the NSACF can reject the UE registration.
  • the NSACF may reject the registration request of the UE.
  • the AMF can Put one or more default network slices into the Allow NSSAI to allow network slices as authorization.
  • the UE may request to be registered in the default network slice allowed by the authorization. If there is no default network slice in the subscription information of the network slice, the AMF may reject the UE's registration request.
  • the method also includes:
  • the number of UEs registered within the specific area reaches the maximum number of registered users, that is, the number of UEs registered within the specific area is equal to the maximum number of registered users.
  • the NSACF can reject the UE's registration request and indicate by reaching the maximum number
  • the information indicates the slice identity of the network slice to the AMF.
  • the AMF can determine the reason for the registration failure.
  • the indication information of reaching the maximum number may include statistical information of the network slice, that is, the number of registered UEs in the current network slice.
  • the UE may request to register multiple network slices through one registration request or multiple registration requests.
  • the AMF can send indication information to the UE, indicating the slice identification list of the network slices that refuse to register, and can indicate the reason for rejecting registration for each network slice that refuses to register, such as network slice-specific
  • the number of UEs registered in the area has reached the maximum number of registered users.
  • the AMF may also set a timer for the UE to initiate a re-request for registration of the network slice.
  • the timer expires, the UE may initiate a network slice registration request again.
  • this exemplary embodiment provides an information transmission method that can be executed by an AMF of a cellular mobile communication system, including:
  • Step 601 Send a statistical information update request, wherein the statistical information update request is used to instruct the NSACF to determine the statistical information of UEs registered in a specific area based on the network slice according to specific area indication information.
  • the core network of the cellular mobile communication network the AMF is used to receive all connection and session related information from the UE, and is responsible for handling connection and mobility management tasks.
  • the NSACF can be used to manage UEs and PDU sessions registered in the network slice, for example, to control the number of UEs registered in the network slice.
  • the NSACF may be the only NSACF deployed in the network slice, and the NSACF may also be one or more of multiple NSACFs deployed in the network slice.
  • NSACFs may be deployed in the operator's network.
  • One NSACF may serve one or more network slices in one service area.
  • a network slice is handled by only one NSACF.
  • the S-NSSAI of different network slices are different.
  • NSACF can be an NSACF instance or an NSACF set.
  • a PLMN can have one or more service areas.
  • Specific area indication information may be used to indicate a specific area.
  • the network resources of a specific area are smaller than the network resources of the entire network slice. That is, a specific area is smaller than the coverage of the entire network slice resource.
  • the network slice may include N service areas, and the specific area may be one or M of the N service areas, where M is smaller than N, and M and N are positive integers.
  • the statistical information may be a statistical result of the NSACF on UEs registered in a specific area of the network slice.
  • the statistical information may include at least one of the following information: types of UEs registered within a specific area, proportions of UEs of different types registered within a specific area, etc., and the number of UEs registered within a specific area.
  • the statistical information includes: the number of registered UEs within the specific area.
  • the NSACF can count the number of UEs registered in a specific area of the network slice. NSACF can configure corresponding resources based on the determined number of UEs; it can also manage and control UEs registered in a specific area of the network slice; for example, adjust the number of UEs registered in a specific area of the network slice, etc. In this way, the ability to elastically configure resources in a specific area is improved, thereby improving the quality of service (QoS).
  • QoS quality of service
  • the NSACF may trigger NSAC based on an external trigger mechanism, and the NSAC may include: determining statistical information of registered UEs within a specific area, and the like.
  • different UEs may exist in the form of different users. Different users can have different identities, such as UE ID, etc.
  • the statistical information of registered UEs may also be referred to as statistical information of registered users. For example, the number of UEs registered within the specific area may be determined based on the UE IDs of the UEs registered within the specific area.
  • the NSACF determines the statistical information of UEs registered in a specific area based on the network slice, which may be triggered by the AMF.
  • the AMF may be triggered by events such as UE registration, and send a statistical information update request to the NSACF, triggering the NSACF to execute NSAC, and then determine the statistical information.
  • the AMF instructs the NSACF to determine the number of registered UEs within a specific area of the network slice through a statistical information update request, and the specific steps include:
  • Step 301 The AMF is triggered to instruct the NSACF to determine the number of registered UEs within a specific area, that is, the AMF is triggered to instruct the NSACF to perform a validity check and update process of registered UEs in a specific area of the slice.
  • Step 302 The AMF sends a statistical information update request to the NSACF, triggering the NSACF to determine the number of UEs registered in a specific area of the network slice; for example, the statistical information update request may be: Nnsacf_NSAC_NumOfUEsUpdate_Request.
  • the statistical information update request is used to instruct the NSACF to perform the validity check and update process of the registered UEs in the specific area of the slice based on the statistical information update request, that is, to determine the number of registered UEs in the specific area of the network slice.
  • Step 304 The AMF receives the response message of the statistical information update request sent by the NSACF, and indicates to the AMF the number of registered UEs in the determined specific area, etc.; for example, the response message of the statistical information update request may be: Nnsacf_NSAC_NumOfUEsUpdate_Response.
  • the above scheme can determine the statistical information of UEs registered in a specific area based on the network slice, and the NSACF can obtain the statistical information of a specific area smaller than the granularity of the entire network slice, and then based on Statistical information within a specific area is used for network resource management to meet the refined management requirements of network operations and services.
  • the statistical information update request is triggered by the AMF according to at least one of the following events: based on UE registration to the network slice; based on UE de-registering from the network slice; based on the network slice Update UE configuration.
  • the specific area indication information includes at least one of the following:
  • the identifier of the geographic area is the identifier of the geographic area.
  • the specific area indication information may include multiple cell IDs for indicating multiple cells.
  • the geographic area indicated by the identifier of the geographic area may be a geographic area that can be mapped to a service area. In this way, the NSACF may determine statistical information based on the mapped service area.
  • the NSACF may determine the statistical information of UEs registered in the specific area based on the specific area indication information. Realize UE information statistics at a finer granularity than the entire network slice. Meet the refined management requirements of network operations and services.
  • the specific area indication information is pre-stored in the NSACF;
  • the specific area indication information is determined based on a communication protocol
  • the specific region indication information is received from a consumer network function.
  • the specific area indication information may be pre-stored in the NSACF, and when the NSACF is triggered, the specific area is determined through the pre-stored specific area indication information.
  • the specific area indication information can also be determined according to the communication protocol, and when the NSACF is triggered, the specific area is determined through the communication protocol or the calculation method given in the communication protocol.
  • Consumer network functions may include: network exposure function (NEF, Network Exposure Function), policy decision function (PCF, Policy Decision Function), operation and maintenance management system (OAM, Operation Administration and Maintenance) and/or multiple NSACF deployment scenarios Master NSACF.
  • Consumer network functions can determine specific regions based on their own needs. And instruct NSACF to go to a specific area through the specific area indication information.
  • the method also includes:
  • the statistical information sent by the NSACF is received.
  • the NSACF After the NSACF determines the statistical information, it can feed back to the AMF for reference in decision-making by the AMF. For example, the AMF can determine whether it is possible to add UEs to a specific area according to whether the number of registered UEs in a specific area exceeds a predetermined threshold.
  • the statistical information update request is triggered by the AMF according to the following event: based on UE registration to the network slice.
  • the AMF may first determine the network slice corresponding to the registration operation, and send a statistical information update request to the network slice corresponding to the registration operation.
  • the statistics update request may explicitly or implicitly indicate an increase in the number of UEs.
  • the statistical information update request may use a predetermined bit to indicate the increase in the number of registered UEs, or use the UE registration request as the statistical information update request to implicitly indicate the increase in the number of registered UEs.
  • the SMF may first perform the discovery of the NSACF.
  • the UE can trigger the AMF to start the statistics process of the registered UE in a specific area.
  • the UE may indicate to the AMF the slice identifier of the network slice for the registration operation, and the AMF determines the network slice for the registration operation based on the slice identifier, and then determines the NSACF corresponding to the network slice. Then, the AMF sends a statistical information update request to the NSACF of the determined network slice.
  • the slice identifier of the network slice may include S-NSSAI, and/or a slice identifier, and the like.
  • the statistical information update request may be carried in the operation information for the network slicing operation. For example, when the UE registers with the network slice, the statistical information update request may be included in the registration request.
  • the registration of the UE to the network slice may include the initial registration of the UE into the network slice, or the registration of the mobile registration update type caused by the handover of the UE across AMFs, etc.
  • the registration of the UE in the network slice will cause changes in the statistical information of the registered UEs in a specific area. Therefore, the AMF may instruct the NSACF to determine the statistical information of the registered UEs in a specific area.
  • the NSACF may determine the statistical information of the UE registered in a specific area before the UE is registered in the network slice, or determine the UE registered in a specific area after the UE is registered in the network slice stats.
  • the specific steps of AMF triggering NSACF to determine the statistical information of UE registered in a specific area include:
  • Step 402 The AMF sends a statistical information update request to the NSACF, such as Nnsacf_NSAC_NumOfUEsUpdate_Request, the statistical information update request is used to trigger the NSACF to determine the statistical information of UEs registered in a specific area of the network slice; the statistical information update request can be indicated to the NSACF in an explicit or implicit manner The UE performs network slice registration.
  • a statistical information update request such as Nnsacf_NSAC_NumOfUEsUpdate_Request
  • the statistical information update request is generated by the AMF according to the network slice registration request sent by the UE, wherein the network slice registration request is a registration process initiated by the UE to one or some network slices.
  • AMF can perform NSACF discovery and selection based on parameters such as slice identifier and NSACF characteristics, determine the network slice that UE needs to register, and trigger the validity check and update process of the number of registered users in a specific area.
  • the S-NSSAI of the network slice requesting registration can be carried in the registration request sent by the UE, and the AMF can first determine whether the S-NSSAI exists in the Allowed NSSAI, and if so, then Step 402 is executed to request the NSACF to determine statistical information of UEs registered in a specific area. Otherwise, UE registration may be rejected.
  • the statistical information update request may include: UE identification information such as UE ID, access type, S-NSSAI for network slicing requesting NSAC, AMF identification and update flag. Wherein, there may be one or more S-NSSAIs requesting to perform NSAC network slicing, and the UE may request registration of multiple network slices at the same time.
  • the update flag can be used to indicate that a UE is added to the network slice, that is, the UE is registered in the network slice.
  • the AMF in response to the initial exchange between the AMF and the NSACF of the network slice, requesting to execute the NSAC process, for example, sending a statistical information update request to the network slice for the first time, the AMF may carry the EAC need notification in the statistical information update request
  • the NF information of the relevant endpoint obtained thus implicitly subscribes to the EAC-related notifications of the network slice from the NSACF, such as whether the EAC is activated or not.
  • the update request based on statistical information is used to instruct NSACF to perform the validity check and update process of the registered UEs in the specific area of the slice based on the statistical information update request, and determine the statistical information of the registered UEs in the specific area of the network slice, such as the number of registered UEs wait.
  • the NSACF In response to UEs being registered in the network slice, the NSACF updates the number of registered UEs in the network slice. And confirm the number of registered UEs in a specific area of the network slice.
  • the NSACF may determine whether to allow the UE to register based on the status of the network slice, such as the load of the network slice, the number of existing UEs in the slice, and the like.
  • Step 404 After the AMF receives the statistics information of registered UEs in a specific area of the network slice determined by the NSACF, it sends a response message to the AMF to update the statistics information.
  • the response message may include: the determined number of registered UEs in the specific area, and/or UE registration results, and the like.
  • the statistical information update request triggered based on UE registration to the network slice carries location information of the UE registered to the network slice;
  • the location information of the UE is used for the NSACF to determine whether to count the UE registered to the network slice in the statistical information.
  • the location information may be used to indicate the location of the UE requesting registration. If the location of the UE requesting registration corresponds to a specific area, the UE is counted; otherwise, the UE is not counted.
  • the location of the UE requesting registration corresponds to a specific area, including: the location of the UE requesting registration is located within the range of the specific area, and the like.
  • the UE may request to register in the network slice. Since the specific area range is only a part of the entire network slice, the location of the UE may be located outside the specific area range, then , when the NSACF determines the statistical information of UEs registered in a specific area, it may not count the UEs. If the location of the UE is within a specific area, the UE needs to be counted.
  • Whether to count the UE is determined according to the location information of the UE, which can improve the accuracy of the NSAC in determining statistical information.
  • the location information includes at least one of the following:
  • the statistical information update request carries the location information of the UE of the registered user, and the UE location information is at least one of the following information: cell information and tracking area information.
  • the location information is received from a base station
  • the location information is obtained from the Gateway Mobile Location Center GMLC.
  • the base station may determine the location information of the UE by means of positioning or the like.
  • the base station (such as gNB) may send the location information of the UE registered in the network slice to the AMF. Then sent by AMF to NSACF. Alternatively, the location information of the UE registered to the network slice may be acquired by the AMF from the GMLC.
  • the NSACF determines said statistical information before the UE registers with said network slice;
  • the NSACF determines the statistical information when the UE registers with the network slice.
  • EAC Early Admission Control
  • NSACF can be a security check before the NSACF performs complete authentication. If EAC is activated, when NSACF receives the statistical information update request, it can determine that EAC has been completed, and the statistical information update request is authentic, so the statistical information can be determined before the registration operation; otherwise, NSACF needs to perform authentication and other checks, the NSACF can determine the statistical information before and after the registration operation, so that the work efficiency of the NSACF can be improved.
  • the AMF is triggered according to the following event: based on UE de-registering from the network slice.
  • De-registration of the UE may be initiated by the UE or by the network.
  • the AMF may send a statistical information update request to the NSACF to instruct the NSACF to determine the statistical information.
  • the statistics update request may explicitly or implicitly indicate a reduction in the number of UEs.
  • the UE or the network can trigger the AMF to start the statistical process of UE registration in a specific area.
  • the UE or the network can indicate to the AMF the slice identifier of the network slice for the de-registration operation, and the AMF determines the network slice for the de-registration operation based on the slice identifier, and then the AMF sends a statistical information update request to the determined network slice.
  • the slice identifier of the network slice may include S-NSSAI, and/or a slice identifier, and the like.
  • the AMF may instruct the NSACF to determine the statistical information of UEs registered in a specific area.
  • the NSACF may determine statistical information of UEs registered in a specific area after the UE is deregistered from the network slice.
  • the AMF triggers the NSACF to determine the statistical information of the registered UE in a specific area.
  • the specific steps include:
  • Step 502 The AMF sends a statistical information update request to the NSACF, such as Nnsacf_NSAC_NumOfUEsUpdate_Request, triggering the NSACF to determine the statistical information of UEs registered in a specific area of the network slice; the statistical information update request can indicate to the NSACF that the network slice is due to the UE de-registering in an explicit or implicit manner. The number of UEs changes.
  • the statistical information update request may include: UE identification information such as UE ID, access type, S-NSSAI for network slicing requesting NSAC, AMF identification and update flag. .
  • the update flag can be used to indicate that the number of UEs has decreased, that is, UEs have deregistered from the network slice.
  • the statistical information update request is used to instruct NSACF to check the validity and update process of registered UEs in a specific area of the slice based on the statistical information update request, and determine the statistical information of registered UEs in a specific area, such as the number of registered UEs.
  • the NSACF In response to UE de-registering from the network slice, the NSACF updates the number of registered UEs in the network slice, and confirms the number of registered UEs in a specific area of the network slice.
  • Step 504 After the AMF receives the statistics information of registered UEs in a specific area of the network slice determined by the NSACF, the AMF sends a response message to the statistics information update request sent to the AMF.
  • the response message may include: the determined number of registered UEs in the specific area, and the like.
  • the statistical information update request is triggered by the AMF according to the following event: UE configuration is updated based on the network slice.
  • the UE configuration may include: network slice configuration associated with the UE on the network side.
  • a change in the Network Slice-Specific Authentication and Authorization (Network Slice-Specific Authentication and Authorization) procedure or the subscription S-NSSAI procedure may trigger UE configuration update.
  • the NSACF can determine the statistical information of UEs registered within a specific area.
  • the AMF can send a statistical information update request to the NSACF, and the NSACF determines the statistical information of the registered UEs within a specific area. NSACF can send statistical information to AMF.
  • the NSACF determines said statistical information prior to updating said UE configuration
  • the NSACF determines the statistical information after updating the UE configuration.
  • EAC Early Admission Control
  • NSACF may be a security check before the NSACF performs complete authentication. If, EAC is activated, when NSACF receives the statistical information update request, it can determine that EAC has been completed, and the statistical information update request is authentic, so the statistical information can be determined before updating the UE configuration; otherwise, NSACF needs Perform authentication and other checks, NSACF can determine the statistical information after updating the UE configuration
  • the NSAC performed includes: determining statistical information of UEs registered within a specific area of the network slice.
  • the statistical information update request carries a slice identifier
  • the statistical information update request is used to instruct the NSACF to determine the statistical information of UEs registered within the specific area of the network slice indicated by the slice identifier.
  • the statistical information update request sent by the AMF to the NSACF may carry the slice identifier of the network slice whose statistical information needs to be determined.
  • the slice identifier may include: S-NSSAI, a slice identifier, and the like.
  • the NSACF can determine the network slice for which statistical information needs to be determined according to the slice identifier. Since the NSACF can correspond to multiple network slices, therefore, indicating the network slice through the slice identifier can improve the accuracy of the AMF indication.
  • the specific area has a maximum number of registered users allowed to register the UE
  • the method also includes:
  • the maximum number of arrival indication information is used to indicate that the number of registered UEs within the specific area reaches the maximum number of registered users.
  • the number of UEs registered within the specific area reaches the maximum number of registered users, that is, the number of UEs registered within the specific area is equal to the maximum number of registered users.
  • the NSACF may configure the maximum number of registered users with registered UEs for a specific area, that is, the maximum number threshold allowed to be registered within a specific area.
  • the NSACF can reject the UE registration.
  • the NSACF may reject the registration request of the UE.
  • the AMF can Put one or more default network slices into the Allow NSSAI to allow network slices as authorization.
  • the UE may request to be registered in the default network slice allowed by the authorization. If there is no default network slice in the subscription information of the network slice, the AMF may reject the UE's registration request.
  • the NSACF can reject the registration request of the UE and indicate by reaching the maximum number
  • the information indicates the slice identity of the network slice to the AMF.
  • the AMF can determine the reason for the registration failure.
  • the indication information of reaching the maximum number may include statistical information of the network slice, that is, the number of registered UEs in the current network slice.
  • the method also includes:
  • the number of UEs registered within the specific area reaches the maximum number of registered users, that is, the number of UEs registered within the specific area is equal to the maximum number of registered users.
  • the UE may request to register multiple network slices through one registration request or multiple registration requests.
  • the AMF can send indication information to the UE, indicating the slice identification list of the network slices that refuse to register, and can indicate the reason for rejecting registration for each network slice that refuses to register, such as network slice-specific
  • the number of UEs registered in the area has reached the maximum number of registered users.
  • the AMF may also set a timer for the UE to initiate a re-request for registration of the network slice.
  • the timer expires, the UE may initiate a network slice registration request again.
  • the statistical methods for the number of registered users in a specific area of network slicing include:
  • NSACF performs statistics on the number of registered users based on the specific area information of the network slice, and increases or decreases the number of registered users in the specific area of the network slice ;
  • the specific area information can be configured on the NSACF, or provided to the NSACF by the consumer network function in the 5G network.
  • the specific area information includes at least one of the following: cell (Cell) ID, tracking area identification TAI, area of interest AoI, tracking area identification list TAI list, service area (Service Area), which can be mapped to the service area Geography Area of (Service Area).
  • the consumer network function may be a network opening function NEF, or a policy decision function PCF, or a master NSACF when multiple NSACFs are deployed.
  • the NSACF performs statistics on the number of registered users in a specific area of the slice according to the location information of the registered users.
  • the location information of the registered user is at least one of the following information: cell information, tracking area information, and the like.
  • the location information of the registered user is obtained from the AMF and carried to the NSACF in the request message sent by the AMF to the NSACF.
  • the location information of the registered user is obtained by the AMF from the gNB, and carried to the AMF in the request message sent by the gNB to the AMF; or obtained by the AMF from the GMLC.
  • the NSACF After receiving the slice user number update request message from the AMF, the NSACF will update the number of registered users for the specific area of the requested slice.
  • the NSACF updates the number of registered users for the specific area of the requested slice according to the user location information carried in the AMF request message.
  • the NSACF is the only NSACF deployed in the network slice, or an NSACF among multiple NSACF deployments in the network slice.
  • the NSACF is configured with the maximum number of registered users allowed in a specific area of the network slice, or the allowed threshold of registered users in a specific area of the network slice.
  • NSACF sends the response message to AMF, carrying the information that the number of registered user UEs in the specific area of the slice has reached the set threshold/maximum value
  • the slice identifies the S-NSSAI(s), and the resulting parameter indicates that the maximum value has been reached.
  • This example provides a specific example of the validity check and update process of the number of registered users in a specific area of a network slice
  • the validity check and update process of the number of users in a specific area of a network slice is an update process (increase or decrease) for the number of registered end users in a network slice in a specific area.
  • AMF configures which network slices need to perform this validity check and update.
  • the specific area information can be configured on the NSACF, or provided to the NSACF by the consumer network function in the 5G network (for example, the network opening function NEF, or the policy decision-making function PCF, or the main NSACF in multiple NSACF deployment scenarios, etc. ), or configured to NSACF through the operation and maintenance management system OAM (Operation Administration and Maintenance, OAM).
  • OAM Operaation Administration and Maintenance
  • the NSACF in this process is applicable to the scenario where the only NSACF is deployed in the slice, or the scenario where there is an NSACF among multiple NSACF deployments in the slice.
  • the validity check and update process of the number of registered users in a specific area of the slice specifically includes:
  • Step 701 AMF is triggered to perform a validity check and update process of registered UEs in a specific area of the network slice. If the AMF does not know the peer NSACF, the AMF first performs NSACF discovery and selection. When a network slice S-NSSAI needs to perform NSAC, and the slice identifier is in the Allowed NSSAI (for example, AMF requests the UE to register with the slice), or is deleted from the Allowed NSSAI (AMF requests the UE to register with the slice), then AMF triggers the validity check and update process of the network slice, and updates the number of registered end users. The trigger event of the process also includes the change of Allowed NSAAI caused by the switch across AMF. There may be multiple NSACF deployments deployed in a slice, and when AMF executes the NSAC process of counting the number of registered users in a specific area of the slice, it may interact with multiple NSACF execution processes.
  • the slice-specific area information executed by NSACF can be at least one of the following information: cell ID, tracking area identifier TAI, area of interest AoI, tracking area identification list TAI list, service area Service Area, which can be mapped to a service The Geography Area of the Regional Service Area.
  • AMF triggers the validity check and update process of registered UEs in specific areas of network slicing in the following situations:
  • the NSAC process is executed to subtract the UE from the statistics.
  • the NSSAA slice-specific authentication process or the contracted S-NSSAI change process triggers the configuration update, then execute NSAC according to the EAC mode before the configuration update message (for example, the EAC mode is activated, And the update flag is an increase number, then execute NSAC before the UE configures the update message; EAC mode is activated but the update flag is a decrease number and the EAC mode is not activated, execute NSAC after the UE configures the update message)
  • Step 702 AMF sends Nnsacf_NSAC_NumOfUEsUpdate_Request message to NSACF.
  • AMF includes UE ID, access type, relevant slice S-NSSAIs requesting to perform NSAC, AMF identification and update flag in the message.
  • the update flag indicates whether to increase or decrease the number of registered user UEs. For example, increase is performed when the user registers to the slice, and decrease is performed when the UE is deregistered from the slice or the registration cannot continue.
  • the AMF also carries location information of the registered user UE in the request message, and the UE location information is at least one of the following information: cell information, tracking area information.
  • the UE location information can be obtained by the AMF from the gNB, and carried to the AMF in a request message sent by the gNB to the AMF; or obtained by the AMF from the GMLC.
  • AMF will carry the relevant endpoint NF information that EAC needs to be notified to in the message, thereby implicitly subscribing to the EAC-related notification of the slice from NSACF.
  • Step 703 NSACF updates the number of UEs currently registered to the network slice. For example, based on the information provided by the AMF in the update flag parameter, the number of registered UEs in the corresponding network slice is increased or decreased.
  • the NSACF locally configures the specific area information of the slice, or receives the specific area information of the slice provided by the consumer NF, (the consumer NF includes the network opening function NEF, or the policy decision function PCF, or multiple NSACF deployment scenarios NSACF), or through the operation and maintenance management system OAM (Operation Administration and Maintenance, OAM) to configure the specific area information of the slice, NSACF performs the update of the number of registered users for the specific area of the request slice. For example, based on the information provided by the AMF in the update flag parameter, based on the UE location information and the specific area information of the slice, the number of registered UEs in the corresponding network slice is increased or decreased.
  • OAM Operaation Administration and Maintenance
  • the NSACF is also configured with a maximum number of registered users allowed in a specific area of a slice or an allowed threshold of registered users in a specific area of a slice.
  • NSACF When executing NSAC for a specific area of a slice, if the slice reaches the maximum number of registered users in this area, NSACF will carry threshold arrival information in the response message returned to AMF.
  • the NSACF stores the EAC notification endpoint associated with the S-NSSAI, so that the stored notification endpoint can be used later to update the EAC schema.
  • Step 704 The NSACF returns the Nnsacf_NSAC_NumOfUEsUpdate_Response response message to the AMF, which carries the slice identifier S-NSSAI(s) indicating that the number of registered user UEs in the specific area of the slice has reached the set threshold/maximum value, and related results indicating that the maximum value has been reached parameter.
  • AMF will send a registration acceptance message to the registered UE.
  • the slice identification rejected by NSAC and the corresponding rejection reason are carried in the rejected slice list.
  • the AMF In the request message sent by AMF to NSACF, all requested slices S-NSSAI(s) have reached the maximum value allowed, and if one or more slices in the subscription information are marked as default slices, and at the same time do not need If NSAC is executed, AMF may decide to put these default slices into Allow NSSAI as authorized slices. Otherwise, the AMF will reject the UE's registration request. In the registration rejection message, the AMF carries a list of rejected slice identifiers, and each slice carries a corresponding rejection reason value, for example, the maximum number of registered users allowed in the area of the slice has been reached. At the same time, optionally, a timer that can initiate a re-request is set.
  • the NSAC is an execution process for a specific area of the slice, and the corresponding message returned in step 4 carries threshold arrival information in the specific area, which is used as a reference for AMF decision-making.
  • the specific steps of the validity check and update process of the number of registered users in a specific area of the slice include:
  • Step 801 AMF receives a registration request sent by UE.
  • the user initiates the registration process to one or some network slices to the network, and the AMF performs the discovery and selection of the NSACF based on parameters such as the slice identifier and NSACF characteristics.
  • the process of checking the validity and updating the number of registered users in a specific area is triggered.
  • step 802 to step 804 respectively corresponds to step 702 to step 704 shown in FIG. 7 in example 1, and will not be repeated here.
  • Step 805a If all the slices requesting to perform NSAC have reached the maximum value (the maximum value has been reached in this specific area, and there is no new threshold value that can be updated or supplemented in this slice or in the registration area of the slice), and according to AMF configuration and other policy information, such as no other authorized default slices, and no slices in the NSSAA slice-specific authentication process, AMF will refuse the UE to register with the relevant network slice, send a registration rejection message, and at the same time Carry relevant rejection reason values, such as threshold arrival, etc. Otherwise, execute step 805b
  • Step 805b Register the UE in the network slice, and execute step 05c.
  • Step 805c If the regular registration process is performed as in 5b, the AMF may send a registration acceptance message (Registration Accept message). If the UE applies to register multiple network slices at the same time, some of which are successfully registered and some of which are not registered successfully, the AMF sends this message to the UE, and carries the network slice identifier and corresponding reason value for rejecting the registration in the message, and optionally carries A backoff timer for UE reselection initiation registration.
  • Registration Accept message a registration acceptance message
  • the specific steps of the validity check and update process of the number of registered users in a specific area of the slice include:
  • Step 900 the UE is in a registered state, and the UE or the network triggers a UE de-registration process.
  • Step 901a to Step 901c Perform the de-registration process according to the conventional de-registration process.
  • the de-registration process triggers the AMF to request the NSACF to check and update the validity of the number of registered users in a specific area of the network slice.
  • steps 902 to 904 corresponds to steps 702 to 704 shown in Figure 7 in Example 1.
  • AMF triggers the validity check and update of the number of registered users in a specific area of the slice
  • the NSACF subtracts the number of unregistered UEs from the number of registered UEs in a specific area of each corresponding network slice, and deletes the UE-ID of the UE from the list of registered user numbers of the corresponding network slice.
  • the embodiment of the present invention also provides an information transmission device, as shown in FIG. 10 , which is applied in NSACF of cellular mobile wireless communication, wherein the device 100 includes:
  • the processing module 110 is configured to determine, according to the indication information of the specific area, statistical information of UEs registered in the specific area based on the network slice.
  • the statistical information includes: the number of registered UEs within the specific area.
  • the specific area indication information includes at least one of the following:
  • the identifier of the geographic area is the identifier of the geographic area.
  • the specific area indication information is pre-stored in the NSACF
  • the specific area indication information is sent by the consumer network function to the NSACF.
  • processing module 110 is specifically configured as:
  • the statistical information update request is triggered by the AMF according to at least one of the following events:
  • UE configuration is updated based on the network slice.
  • the network slice based on the statistical information update request triggered by UE registration to the network slice, it carries the location information of the UE registered to the network slice;
  • the determination is based on statistical information of registered UEs within a specific area of the network slice, including:
  • the location information includes at least one of the following:
  • the statistical information update request carries a slice identifier
  • the processing module 110 is specifically configured as:
  • processing module 110 is specifically configured as:
  • EAC Early Validity Check
  • the statistical information is determined after updating the UE configuration in response to the EAC not being activated.
  • the device 100 further includes:
  • the first sending module 120 is configured to send the statistical information to the AMF.
  • the specific area range of the network slice has a maximum number of registered users allowed to register UEs.
  • the device 100 further includes:
  • the second sending module 130 is configured to, in response to the number of UEs registered within the specific area of the network slice reaching the maximum number of registered users, send an indication to the AMF that the number of UEs registered within the specific area has reached Indication information of the maximum number of registered users reaching the maximum number.
  • the embodiment of the present invention also provides an information transmission device, as shown in FIG. 11 , which is applied in AMF of cellular mobile wireless communication, wherein the device 200 includes:
  • the third sending module 210 is configured to send a statistical information update request, where the statistical information update request is used to instruct the NSACF to determine the statistical information of UEs registered in a specific area based on the network slice according to specific area indication information.
  • the statistical information includes: the number of registered UEs within the specific area.
  • the specific area indication information includes at least one of the following:
  • the identifier of the geographic area is the identifier of the geographic area.
  • the statistical information update request is triggered by the AMF according to at least one of the following events:
  • UE configuration is updated based on the network slice.
  • the network slice based on the statistical information update request triggered by UE registration to the network slice, it carries location information of the UE registered to the network slice;
  • the location information is used for the NSACF to determine whether to count the UE registered to the network slice in the statistical information.
  • the location information includes at least one of the following:
  • said location information is received from a base station
  • the location information is obtained from the Gateway Mobile Location Center GMLC.
  • the statistical information update request carries a slice identifier
  • the statistical information update request is used to instruct the NSACF to determine the statistical information of UEs registered within the specific area of the network slice indicated by the slice identifier.
  • the device 200 also includes:
  • the first receiving module 220 is configured to receive the statistical information sent by the NSACF.
  • the specific area has a maximum number of registered users allowed to register the UE
  • the device also includes:
  • the second receiving module 230 is configured to receive indication information of the maximum number of arrivals, where the maximum number of arrivals indication information is used to indicate that the number of registered UEs within the specific area reaches the maximum number of registered users.
  • the device 200 also includes:
  • the fourth sending module 240 is configured to send indication information to the UE indicating that the number of registered UEs within the specific area has reached the network slice with the maximum number of registered users.
  • the processing module 110, the first sending module 120, the second sending module 130, the third sending module 210, the first receiving module 220, the second receiving module 230 and the fourth sending module 240 etc. may be one or multiple central processing units (CPU, Central Processing Unit), graphics processors (GPU, Graphics Processing Unit), baseband processors (BP, Baseband Processor), application-specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field Programmable Gate Array (FPGA, Field-Programmable Gate Array), General Processor, Controller, Microcontroller A device (MCU, Micro Controller Unit), a microprocessor (Microprocessor), or other electronic components are used to implement the aforementioned method.
  • CPU Central Processing Unit
  • graphics processors GPU, Graphics Processing Unit
  • BP Baseband Processor
  • ASIC Application Specific Integrated Circuit
  • DSP Programmable Logic Device
  • PLD Programmable Logic Device
  • Fig. 12 is a block diagram of an apparatus 3000 for information transmission according to an exemplary embodiment.
  • the apparatus 3000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • device 3000 may include one or more of the following components: processing component 3002, memory 3004, power supply component 3006, multimedia component 3008, audio component 3010, input/output (I/O) interface 3012, sensor component 3014, and Communication component 3016.
  • the processing component 3002 generally controls the overall operations of the device 3000, such as those associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 3002 may include one or more modules that facilitate interaction between processing component 3002 and other components. For example, processing component 3002 may include a multimedia module to facilitate interaction between multimedia component 3008 and processing component 3002 .
  • the memory 3004 is configured to store various types of data to support operations at the device 3000 . Examples of such data include instructions for any application or method operating on device 3000, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 3004 can be realized by any type of volatile or non-volatile memory device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • Power component 3006 provides power to various components of device 3000 .
  • Power components 3006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 3000 .
  • the multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or a swipe action, but also detect duration and pressure associated with the touch or swipe operation.
  • the multimedia component 3008 includes a front camera and/or a rear camera. When the device 3000 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 3010 is configured to output and/or input audio signals.
  • the audio component 3010 includes a microphone (MIC), which is configured to receive external audio signals when the device 3000 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 3004 or transmitted via communication component 3016.
  • the audio component 3010 also includes a speaker for outputting audio signals.
  • the I/O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor assembly 3014 includes one or more sensors for providing status assessments of various aspects of device 3000 .
  • the sensor component 3014 can detect the open/closed state of the device 3000, the relative positioning of components such as the display and the keypad of the device 3000, the sensor component 3014 can also detect a change in the position of the device 3000 or a component of the device 3000, a user Presence or absence of contact with device 3000 , device 3000 orientation or acceleration/deceleration and temperature change of device 3000 .
  • Sensor assembly 3014 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • the sensor assembly 3014 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 3014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 3016 is configured to facilitate wired or wireless communication between the apparatus 3000 and other devices.
  • the device 3000 can access wireless networks based on communication standards, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 3016 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 3016 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology, and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • apparatus 3000 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • non-transitory computer-readable storage medium including instructions, such as the memory 3004 including instructions, which can be executed by the processor 3020 of the device 3000 to implement the above method.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

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Abstract

本公开实施例是关于信息传输方法、装置、通信设备和存储介质，网络切片接纳控制功能（NSACF）根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的用户设备（UE）的统计信息。

Description

信息传输方法、装置、通信设备和存储介质 技术领域
本申请涉及无线通信技术领域但不限于无线通信技术领域，尤其涉及信息传输方法、装置、通信设备和存储介质。
背景技术
网络切片(Network Slice)可以提供完整网络功能，如无线电接入网络功能、核心网络功能和网际互连协议多媒体系统(IMS，Internet Protocol Multimedia Subsystem)功能等。网络可以支持一个或多个网络切片。网络切片可以提供不同的承诺服务，并且可以专用于特定用户。相同的业务或切片，但不同的切片区分符的切片可能具有不同的单一网络切片选择辅助信息(S-NSSAI，Single Network Slice Selection Assistance Information)。
移动网络运营商(MNO，Mobile Network Operator)可以部署提供功能相同的多个网络切片。多个网络切片可以分别不同的UE组。多个网络切片可以分别提供不同的承诺服务和/或专用于客户。相同切片功能的不同网络切片，S-NSSAI不同、或者，网络切片的服务类型可能相同但切片区分符可能不同。
发明内容
有鉴于此，本公开实施例提供了一种信息传输方法、装置、通信设备和存储介质。
根据本公开实施例的第一方面，提供一种信息传输方法，其中，由网络切片接纳控制功能(NSACF，Network Slice Admission Control Function)执行，包括：
根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的用户设备(UE，User Equipment)的统计信息。
根据本公开实施例的第二方面，提供一种信息传输方法，其中，所述方法被接入与移动性管理功能(AMF，Access and Mobility Management Function)执行，所述方法包括：
发送统计信息更新请求，其中，所述统计信息更新请求用于指示NSACF根据特定区域指示信息，确定基于所述网络切片的特定区域范围内注册的UE的统计信息。
根据本公开实施例的第三方面，提供一种信息传输装置，其中，包括：
处理模块，配置为根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的UE的统计信息。
根据本公开实施例的第四方面，提供一种信息传输装置，其中，所述装置包括：
第三发送模块，配置为发送统计信息更新请求，其中，所述统计信息更新请求用于指示NSACF根据特定区域指示信息，确定基于所述网络切片的特定区域范围内注册的UE的统计信息。
根据本公开实施例的第五方面，提供一种通信设备装置，包括处理器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，其中，所述处理器运行所述可执行程序时执行如第一方面或第二方面所述信息传输方法的步骤。
根据本公开实施例的第六方面，提供一种存储介质，其上存储有可执行程序，其中，所述可执行程序被处理器执行时实现如第一方面或第二方面所述信息传输方法的步骤。
本公开实施例提供的信息传输方法、装置、通信设备和存储介质。NSACF根据特定区域指示信息，确定基于网络切片的特定区域范围内注册 的用户设备(UE)的统计信息。如此，相较只能确定整个网络切片的统计信息，确定基于网络切片的特定区域范围内注册的UE的统计信息，NSACF可以获取小于整个网络切片粒度的特定区域的统计信息，进而基于特定区域范围内的统计信息进行网络资源管理，满足网络运营和业务的精细化管理需求。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开实施例。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明实施例，并与说明书一起用于解释本发明实施例的原理。
图1是根据一示例性实施例示出的一种无线通信系统的结构示意图；
图2是根据一示例性实施例示出的一种信息传输方法的流程示意图；
图3是根据一示例性实施例示出的另一种信息传输方法的流程示意图；
图4是根据一示例性实施例示出的又一种信息传输方法的流程示意图；
图5是根据一示例性实施例示出的再一种信息传输方法的流程示意图；
图6是根据一示例性实施例示出的再一种信息传输方法的流程示意图；
图7是根据一示例性实施例示出的再一种信息传输方法的流程示意图；
图8是根据一示例性实施例示出的再一种信息传输方法的流程示意图；
图9是根据一示例性实施例示出的再一种信息传输方法的流程示意图；
图10是根据一示例性实施例示出的一种信息传输装置的框图；
图11是根据一示例性实施例示出的另一种信息传输装置的框图；
图12是根据一示例性实施例示出的一种用于信息传输的装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面 的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统是基于蜂窝移动通信技术的通信系统，该无线通信系统可以包括：若干个终端11以及若干个基站12。
其中，终端11可以是指向用户提供语音和/或数据连通性的设备。终端11可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，终端11可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)、移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote  terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户终端(user equipment，UE)。或者，终端11也可以是无人飞行器的设备。或者，终端11也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线通信设备。或者，终端11也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
基站12可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通信系统也可以是5G系统，又称新空口(new radio，NR)系统或5G NR系统。或者，该无线通信系统也可以是5G系统的再下一代系统。其中，5G系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。或者，MTC系统。
其中，基站12可以是4G系统中采用的演进型基站(eNB)。或者，基站12也可以是5G系统中采用集中分布式架构的基站(gNB)。当基站12采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对基站12的具体实现方式不加以限定。
基站12和终端11之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的 更下一代移动通信网络技术标准的无线空口。
在一些实施例中，终端11之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(vehicle to everything，V2X)中的V2V(vehicle to vehicle，车对车)通信、V2I(vehicle to Infrastructure，车对路边设备)通信和V2P(vehicle to pedestrian，车对人)通信等场景。
在一些实施例中，上述无线通信系统还可以包含网络管理设备13。
若干个基站12分别与网络管理设备13相连。其中，网络管理设备13可以是无线通信系统中的核心网设备，比如，该网络管理设备13可以是无线通信系统中的核心网设备，比如，接入和移动性管理功能(AMF，Access and Mobility Management Function)、会话管理功能(SMF，Session Management Function)、用户面功能(UPF，User Plane Function)、策略控制功能(PCF，Policy Control Function)、网络存储功能(NRF，Network Repository Function)等。对于网络管理设备13的实现形态，本公开实施例不做限定。
本公开实施例涉及的执行主体包括但不限于：蜂窝移动通信系统中的手机终端，以及网络侧设备，如基站等接入网设备，以及核心网等。
应用功能(AF，Application function)/或应用服务提供商(ASP，Application Service Provider)，基于用户体验的保障或提升等需求，存在获取网络切片的统计信息的需求，统计信息包括：网络切片的注册用户数，激活的PDU会话数，网络切片中的注册用户数和/或激活PCU会话数占网络切片整体阈值的比例等。
相关技术中，针对网络切片的统计信息是基于整个网络切片粒度的，即统计的是整个网络切片的覆盖范围的信息。基于整个网络切片的统计信息往往无法真正满足运营商和业务的需求，尤其是特定场景下的业务特性需求，从而无法针对网络状态相应地配置资源，达到提升用户业务体验的 目的。
例如，运营商通常具有对网络切片内的某个特定区域内如：省、城市、具体的场馆和学校等进行资源弹性配置和业务QoS保障。运营商需要获取该特定区域内的具体注册用户数等统计数据，以获知和监控该区域内的实时网络状况，而相关技术无法满足运营商对统计数据的需求。
因此，如何统计、感知和监控网络切片特定区域内的注册用户数，满足在特定区域内的运营和业务需求，是亟待解决的问题。
如图2所示，本示例性实施例提供一种信息传输方法，可以被蜂窝移动通信系统的NSACF执行，包括：
步骤201：根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的UE的统计信息。
NSACF可以用于对网络切片内注册的UE以及PDU会话进行管理，例如，控制网络切片内注册的UE数量等。NSACF可以是网络切片内唯一部署的NSACF，NSACF也可以是网络切片内部署的多个NSACF中的一个或多个。
实际应用中，运营商网络中可能部署多个NSACF。一个NSACF可能为一个服务区域的一个或多个网络切片服务。在一个服务区域内，一个网络切片只由一个NSACF处理。这里，不同网络切片的S-NSSAI不同。NSACF可以是一个NSACF实例，也可以是一个NSACF集。一个PLMN可以有一个或多个服务区域。
特定区域指示信息可以用于指示特定区域。
在一个实施例中，特定区域的网络资源小于整个网络切片的网络资源。即特定区域小于整个网络切片资源的覆盖范围。
示例性的，网络切片可以包括N个服务区域，特定区域可以是N个服务区域中的一个或M个，其中，M小于N，M和N为正整数。
统计信息可以是NSACF对网络切片特定区域范围内注册的UE的统计结果。例如：统计信息可以包括但不限于以下的至少一种信息：特定区域范围内注册的UE的类型，特定区域范围内注册的不同类型UE占比，特定区域范围内注册的UE的数量。
在一个实施例中，所述统计信息，包括：所述特定区域范围内注册的UE的数量。
NSACF可以统计对网络切片特定区域范围内注册的UE数量。NSACF可以基于确定的UE数量，配置相应的资源；也可以对网络切片特定区域范围内注册的UE进行管控；如，调节网络切片特定区域范围内注册的UE数量等。从而提高特定区域范围内资源弹性配置的能力，进而提高服务质量(QoS)。
NSACF可以基于外部触发机制的触发NSAC，NSAC可以包括：确定特定区域范围内注册的UE的统计信息等。
在网络切片中，不同UE可以以不同用户的形式存在。不同用户可以具有不同的标识，如UE ID等。注册UE的统计信息也可以称为注册用户的统计信息。例如，可以基于特定区域范围内注册的UE的UE ID确定特定区域范围内注册的UE的数量。
如此，相较只能确定整个网络切片的统计信息，上述方案能够确定基于网络切片的特定区域范围内注册的UE的统计信息，NSACF可以获取小于整个网络切片粒度的特定区域的统计信息，进而基于特定区域范围内的统计信息进行网络资源管理，满足网络运营和业务的精细化管理需求。
在一个实施例中，所述特定区域指示信息，包括以下至少之一：
小区标识(ID，IDentifier)；
跟踪区标识(TAI,Tracking Area ID)；
感兴趣区域(AoI，Area Of Interest)的标识；
跟踪区标识列表；
服务区域的标识；
地理区域的标识。
这里，小区ID、TAI、AoI的标识、跟踪区标识列表、服务区域的标识和/或地理区域的标识均可以具有一个或多个。例如，特定区域指示信息可以包括多个小区ID，用于指示多个小区。
地理区域的标识所指示的地理区域可以是能够映射到服务区域的地理区域，如此，NSACF可以基于映射的服务区域确定统计信息。
NSACF可以基于特定区域指示信息确定特定区域范围内注册UE的统计信息。实现相对整个网络切片更小粒度的UE信息统计。满足网络运营和业务的精细化管理需求。
在一个实施例中，
所述特定区域指示信息是预先存储在所述NSACF中的；
或者，
所述特定区域指示信息是基于通信协议确定的；
或者，
所述特定区域指示信息是从消费者网络功能接收的。
特定区域指示信息可以预先存储在NSACF，当NSACF被触发时通过预先存储的特定区域指示信息确定特定区域。
特定区域指示信息也可以根据通信协议确定，当NSACF被触发时通过通信协议或通信协议中给出的计算方式确定特定区域。
消费者网络功能可以包括：网络开放功能(NEF，Network Exposure Function)、者策略决策功能(PCF，Policy Decision Function)、操作维护管理系统(OAM，Operation Administration and Maintenance)和/或多NSACF部署场景时的主NSACF。
消费者网络功能可以基于自身的需求，确定特定区域。并通过特定区域指示信息向NSACF指示赶特定区域。
在一个实施例中，所述方法还包括：
向AMF发送所述统计信息。
NSACF确定统计信息后，可以向AMF反馈，供AMF决策作参考，例如，AMF可以根据特定区域范围内注册UE的数量是否超出预定阈值，确定是否能够向特定区域内新增UE等。
在一个实施例中，所述确定基于网络切片的特定区域范围内注册的UE的统计信息，包括：
响应于接收到接入和移动性管理功能AMF的统计信息更新请求，确定基于所述网络切片的所述特定区域范围内注册的UE的所述统计信息。
NSACF确定基于网络切片的特定区域范围内注册的UE的统计信息，可以由是由AMF触发的，也可以是由其他网络实体触发的。若是由AMF触发，则统计信息更新请求为AMF基于UE注册或UE去注册或更新UE配置事件，向NSACF发送统的计信息更新请求，该统计信息更新请求用于触发NSACF执行NSAC，进而确定统计信息。
如图3所示，是以特定区域范围内注册的UE的统计信息为网络切片特定区域范围内注册的UE的数量的示例进行说明的；其中NSACF根据AMF通过统计信息更新请求指示确定网络切片特定区域范围内注册的UE的数量，具体步骤包括：
步骤302：NSACF从AMF接收统计信息更新请求，触发NSACF确定网络切片特定区域注册的UE的数量；例如，统计信息更新请求可以是：Nnsacf_NSAC_NumOfUEsUpdate_Request。其中，该统计信息更新请求是从AMF接收到的，用于指示NSACF进行切片特定区域的注册UE的有效性检查和更新流程。
步骤303：NSACF基于统计信息更新请求，进行切片特定区域的注册UE的有效性检查和更新流程，即确定网络切片的特定区域的注册UE的数量。
步骤304：NSACF可以向AMF发送统计信息更新请求的响应消息，向AMF指示确定的特定区域的注册UE的数量等；例如，统计信息更新请求的响应消息可以是：Nnsacf_NSAC_NumOfUEsUpdate_Response。
当然，当特定区域范围内注册的UE的统计信息为其他信息时，其发明构思和步骤是与前述的网络切片特定区域范围内注册的UE的数量的示例相似的，在此不再赘述。
在一个实施例中，为所述AMF根据以下事件触发的：基于UE注册到所述网络切片。
当发生针对网络切片的UE注册操作时，AMF可以首先确定注册操作对应的网络切片，并向注册操作对应的网络切片发送统计信息更新请求。
统计信息更新请求可以显式或隐式指示UE数量的增加。例如，UE注册到网络切片中时，统计信息更新请求可以采用预定比特位指示注册UE数量增加，或者将UE注册请求作为统计信息更新请求隐式指示注册UE数量的增加。
进行UE注册操作时，SMF可以首先执行NSACF的发现。UE可以触发AMF启动特定区域注册UE的统计流程。UE可以向AMF指示进行注册操作的网络切片的切片标识，AMF基于切片标识确定进行注册操作的网络切片，进而确定网络切片对应的NSACF。进而由AMF向确定的网络切片的NSACF发送统计信息更新请求。网络切片的切片标识可以包括S-NSSAI、和/或切片区分符等。
统计信息更新请求可以携带于针对网络切片操作的操作信息中。例如，在UE注册到所述网络切片时，可以将统计信息更新请求携带在注册请求 中。
UE注册到所述网络切片，可以包括UE初始注册到网络切片中，也可以包括UE跨AMF切换导致的移动注册更新类型的注册等。
UE注册到所述网络切片中，会引起特定区域注册UE的统计信息的变化，因此，AMF可以指示NSACF确定特定区域注册UE的统计信息。
示例性的，针对UE注册到所述网络切片场景，NSACF可以确定UE注册到所述网络切片中之前特定区域注册UE的统计信息，也可以确定UE注册到所述网络切片中之后特定区域注册UE的统计信息。
如图4所示，UE注册到所述网络切片过程中，NSACF确定特定区域注册UE的统计信息的具体步骤包括：
步骤402：NSACF从AMF接收统计信息更新请求，如Nnsacf_NSAC_NumOfUEsUpdate_Request，该统计信息更新请求用于触发NSACF确定网络切片特定区域注册的UE的统计信息；统计信息更新请求可以通过显示或隐式方式向NSACF指示UE进行网络切片的注册。
在本公开实施例中，统计信息更新请求是AMF根据UE发送的网络切片注册请求生成的，其中该网络切片注册请求为UE发起到某个或某些网络切片的注册流程。AMF可以基于切片标识和NSACF特性等参数，执行NSACF的发现和选择，确定UE需要进行注册的网络切片，触发特定区域的注册用户数的有效性检查和更新流程。当UE发起注册到网络切片的注册流程时，可以在UE发送的注册请求中携带请求注册的网络切片的S-NSSAI，AMF可以首先确定该S-NSSAI是否存在于Allowed NSSAI中，如果存在，则执行步骤402，请求NSACF确定特定区域注册UE的统计信息。否则，可以拒绝UE注册。统计信息更新请求中可以包括：UE的标识信息如UE ID、接入类型、请求执行NSAC的网络切片的S-NSSAI、AMF标识和更新标志。其中，请求执行NSAC的网络切片的S-NSSAI可以是一 个或多个，UE可以同时请求注册多个网络切片。更新标志可以用于指示在网络切片增加UE，即UE注册到网络切片中。
在一个实施例中，响应于AMF和该网络切片的NSACF初次交换，请求执行NSAC流程，如，第一次发送统计信息更新请求给该网络切片，AMF可以在统计信息更新请求中携带早期有效性检查(EAC，Early Admission Control)需要通知到的相关端点的NF信息，由此隐式地从NSACF订阅该网络切片的EAC相关通知，如EAC是否激活等。
步骤403：NSACF基于统计信息更新请求，进行切片特定区域的注册UE的有效性检查和更新流程，确定网络切片的特定区域的注册UE的统计信息，如注册UE的数量等。
响应于UE注册到所述网络切片中，NSACF更新网络切片中注册UE的数量。并确认网络切片的特定区域的注册UE的数量。
在一个实施例中，NSACF可以基于网络切片的状况，如网络切片负载、切片内已有UE数量等，确定是否允许UE注册。
步骤404：NSACF确定网络切片的特定区域的注册UE的统计信息后，向AMF发送统计信息更新请求的响应消息。响应消息可以包括：确定的特定区域的注册UE的数量、和/或UE注册结果等。
在一个实施例中，基于UE注册到所述网络切片所触发的所述统计信息更新请求，携带有所述注册到所述网络切片的UE的位置信息；
所述确定基于网络切片的特定区域范围内注册的UE的统计信息，包括：
基于所述UE的位置信息，确定是否在所述统计信息中统计所述注册到所述网络切片的UE。
位置信息可以用于指示请求注册的UE所处的位置。如果请求注册的UE所处的位置对应于特定区域，则统计该UE，否则，不统计该UE。
这里，请求注册的UE所处的位置对应于特定区域，包括：请求注册的UE所处的位置位于特定区域范围内等。
示例性的，如图4所示的步骤403中，UE可以请求注册到网络切片中，由于特定区域范围只是整个网络切片的一部分，因此，UE所处的位置可能位于特定区域范围之外，那么，NSACF确定特定区域范围内注册的UE的统计信息时可以不统计该UE。如果UE所处的位置位于特定区域范围内，那么需要统计该UE。
根据UE的位置信息确定是否统计该UE，可以提高NSAC确定统计信息的准确性。
在一个实施例中，所述位置信息，包括以下至少之一：
小区信息；
跟踪区信息。
统计信息更新请求中携带所述注册用户UE的位置信息，该UE位置信息为以下信息中的至少一种：小区信息，跟踪区信息。
在一个实施例中，可以由基站(如gNB)向AMF发送注册到所述网络切片的UE的位置信息。再由AMF发送给NSACF。或者，注册到所述网络切片的UE的位置信息可以是AMF从网关移动位置中心(GMLC，Gateway Mobile Location Center)获取的。
在一个实施例中，所述确定基于网络切片的特定区域范围内注册的用UE的统计信息，包括：
响应于早期有效性检查EAC被激活，在UE注册到所述网络切片之前确定所述统计信息；
响应于所述EAC未被激活，在UE注册到所述网络切片确定所述统计信息。
早期有效性检查(EAC，Early Admission Control)可以是在NSACF进行 完整鉴权前的安全性的检查。如果，EAC被激活，NSACF接收到统计信息更新请求时，可以确定已经完成了EAC，统计信息更新请求是可信的，因此可以在注册操作之前确定所述统计信息；否则，NSACF需要进行鉴权等检查，NSACF可以在注册操作之前之后确定所述统计信息，如此，可以提高NSACF的工作效率。
在一个实施例中，所述统计信息更新请求为所述AMF根据以下事件触发的：基于UE注册到所述网络切片。
基于UE从所述网络切片去注册。
可以由UE或网络发起UE的去注册。当UE从所述网络切片去注册后，AMF可以NSACF发送统计信息更新请求，指示NSACF确定统计信息。
统计信息更新请求可以显式或隐式指示UE数量的减少。进行UE去注册操作时，UE或网络可以触发AMF启动特定区域注册UE的统计流程。UE或网络可以向AMF指示进行去注册操作的网络切片的切片标识，AMF基于切片标识确定进行去注册操作的网络切片，进而由AMF向确定的网络切片发送统计信息更新请求。网络切片的切片标识可以包括S-NSSAI、和/或切片区分符等。
UE从网络切片中去注册，会引起特定区域注册UE的统计信息的变化，因此，AMF可以指示NSACF确定特定区域注册UE的统计信息。
示例性的，NSACF可以确定UE从网络切片中去注册之后特定区域注册UE的统计信息。
如图5所示，UE从网络切片去注册过程中，NSACF确定特定区域注册UE的统计信息的具体步骤包括：
步骤502：NSACF接收AMF发送的统计信息更新请求，如Nnsacf_NSAC_NumOfUEsUpdate_Request，所述统计信息更新请求用于触发NSACF确定网络切片特定区域注册的UE的统计信息；统计信息更新请求 可以通过显示或隐式方式向NSACF指示网络切片由于UE去注册，UE数量发生变化。在一种可能的实现方式中，统计信息更新请求为AMF根据UE从网络切片中去注册所确定的。在一种可能的实现方式中，AMF可以向UE发送去注册成功的指示信息；在去注册过程中，AMF可以确定UE去注册的网络切片，并触发AMF向网络NSACF发起特定区域的注册用户数的有效性检查和更新流程。
统计信息更新请求中可以包括：UE的标识信息如UE ID、接入类型、请求执行NSAC的网络切片的S-NSSAI、AMF标识和更新标志。。更新标志可以用于指示UE数量减少，即UE从网络切片中去注册。
步骤503：NSACF基于统计信息更新请求，进行切片特定区域的注册UE的有效性检查和更新流程，确定特定区域的注册UE的统计信息，如注册UE的数量等。
响应于UE从网络切片中去注册，NSACF更新网络切片中注册UE的数量，并确认网络切片的特定区域的注册UE的数量。
步骤504：NSACF确定网络切片的特定区域的注册UE的统计信息后，向AMF发送统计信息更新请求的响应消息。响应消息可以包括：确定的特定区域的注册UE的数量等。
在一个实施例中，所述统计信息更新请求为所述AMF根据以下事件触发的：基于所述网络切片更新UE配置。
UE配置可以包括：网络侧关联于UE的网络切片配置。示例性的：网络切片特定鉴权授权(Network Slice-Specific Authentication and Authorization)流程或者签约S-NSSAI流程的变更可以触发UE配置更新。
UE配置发生更新时，网络切片内UE的数量会发生变化，因此，NSACF可以确定特定区域范围内注册的UE的统计信息。
UE配置发生更新时，NSACF可以接收AMF发送的统计信息更新请求， 由NSACF确定特定区域范围内注册的UE的统计信息。NSACF可以向AMF发生统计信息。
在一个实施例中，所述确定基于网络切片的特定区域范围内注册的用UE的统计信息，包括：
响应于所述EAC被激活，在更新所述UE配置之前确定所述统计信息；
响应于所述EAC未被激活，在更新所述UE配置之后确定所述统计信息。
早期有效性检查(EAC,Early Admission Control)可以是在NSACF进行完整鉴权前的安全性的检查。如果，EAC被激活，NSACF接收到统计信息更新请求时，可以确定已经完成了EAC，统计信息更新请求是可信的，因此可以在更新所述UE配置之前确定所述统计信息；否则，NSACF需要进行鉴权等检查，NSACF可以在更新所述UE配置之后确定所述统计信息
例如，EAC模式激活，且更新标志为增加数目，则在UE配置更新消息前执行NSAC；EAC模式激活，但更新标志为减少数目以及EAC模式未激活则都在UE配置更新消息后执行NSAC。这里，执行的NSAC包括：确定网络切片特定区域范围内注册的UE的统计信息。
在一个实施例中，所述统计信息更新请求携带有切片标识；
所述确定基于网络切片的特定区域范围内注册的UE的统计信息，包括：
确定基于所述切片标识指示的所述网络切片的特定区域范围内注册的UE的所述统计信息。
NSACF接收到AMF发送的统计信息更新请求中可以携带有需要确定统计信息的网络切片的切片标识，这里，切片标识可以包括：S-NSSAI、切片区分符等。
NSACF可以根据切片标识确定需要确定统计信息的网络切片。由于 NSACF可以对应于多个网络切片，因此，从而，通过切片标识指示网络切片，可以提高AMF指示的准确性。
在一个实施例中，所述网络切片的所述特定区域范围具有允许注册UE的注册用户最大数量。
NSACF可以为特定区域配置有注册UE的注册用户最大数量，即在特定区域范围内允许注册的最大数量阈值。
在UE注册过程中，如果网络切片当前特定区域内注册UE的数量，达到注册用户最大数量，则NSACF可以拒绝UE注册。
在一个实施例中，如果网络切片当前特定区域内注册UE的数量，达到注册用户最大数量，并且UE注册的位置信息属于特定区域内，那么，NSACF可以拒绝UE的注册请求。
在一个实施例中，响应于UE请求注册的全部网络切片的注册UE的数量，都达到各网络切片对应的注册用户最大数量，并且网络切片的签约信息中具有缺省网络切片，那么，AMF可以将一个或多个缺省网络切片放入Allow NSSAI中，作为授权允许网络切片。UE可以请求注册到授权允许的缺省网络切片中。如果网络切片的签约信息中不具有缺省网络切片，那么AMF可以拒绝该UE的注册请求。
在一个实施例中，所述方法还包括：
响应于所述网络切片的所述特定区域范围内注册的UE的数量到达所述注册用户最大数量，向AMF发送指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量的到达最大数量指示信息。
这里，特定区域范围内注册的UE的数量到达注册用户最大数量，即为特定区域范围内注册的UE的数量等于注册用户最大数量。
UE注册过程中，如果网络切片当前特定区域内注册UE的数量，达到注册用户最大数量，并且UE注册的位置信息属于特定区域内，那么，NSACF 可以拒绝UE的注册请求，并且通过到达最大数量指示信息向AMF指示该网络切片的切片标识。AMF可以确定注册失败的原因。同时，到达最大数量指示信息可以包括网络切片的统计信息，即当前网络切片内注册UE的数量。
UE可以通过一个注册请求或者多个注册请求，请求注册多个网络切片。当一个或多个网络切片拒绝注册时，AMF可以向UE发送指示信息，指示拒绝注册的网络切片的切片标识列表，并且可以针对每个拒绝注册的网络切片指示拒绝注册的原因，例如网络切片特定区域内注册的UE数量已经达到注册用户最大数量。
在一个实施例中，AMF还可以设置一个UE可发起重新请求注册网络切片的定时器。定时器超时时，UE可以再次发起网络切片注册请求。
如图6所示，本示例性实施例提供一种信息传输方法，可以被蜂窝移动通信系统的AMF执行，包括：
步骤601：发送统计信息更新请求，其中，所述统计信息更新请求用于指示NSACF根据特定区域指示信息，确定基于所述网络切片的特定区域范围内注册的UE的统计信息。
蜂窝移动通信网络的核心网，AMF用于从UE接收所有连接和会话相关信息，并负责处理连接和移动管理任务。
NSACF可以用于对网络切片内注册的UE以及PDU会话进行管理，例如，控制网络切片内注册的UE数量等。NSACF可以是网络切片内唯一部署的NSACF，NSACF也可以是网络切片内部署的多个NSACF中的一个或多个。
实际应用中，运营商网络中可能部署多个NSACF。一个NSACF可能为一个服务区域的一个或多个网络切片服务。在一个服务区域内，一个网络切片只由一个NSACF处理。这里，不同网络切片的S-NSSAI不同。NSACF 可以是一个NSACF实例，也可以是一个NSACF集。一个PLMN可以有一个或多个服务区域。
特定区域指示信息可以用于指示特定区域。
在一个实施例中，特定区域的网络资源小于整个网络切片的网络资源。即特定区域小于整个网络切片资源的覆盖范围。
示例性的，网络切片可以包括N个服务区域，特定区域可以是N个服务区域中的一个或M个，其中，M小于N，M和N为正整数。
统计信息可以是NSACF对网络切片特定区域范围内注册的UE的统计结果。例如：统计信息可以包括以下的至少一种信息：特定区域范围内注册的UE的类型，特定区域范围内注册的不同类型UE占比等，特定区域范围内注册的UE的数量。
在一个实施例中，所述统计信息，包括：所述特定区域范围内注册的UE的数量。
NSACF可以统计对网络切片特定区域范围内注册的UE数量。NSACF可以基于确定的UE数量，配置相应的资源；也可以对网络切片特定区域范围内注册的UE进行管控；如，调节网络切片特定区域范围内注册的UE数量等。从而提高特定区域范围内资源弹性配置的能力，进而提高服务质量(QoS)。
NSACF可以基于外部触发机制的触发NSAC，NSAC可以包括：确定特定区域范围内注册的UE的统计信息等。
在网络切片中，不同UE可以以不同用户的形式存在。不同用户可以具有不同的标识，如UE ID等。注册UE的统计信息也可以称为注册用户的统计信息。例如，可以基于特定区域范围内注册的UE的UE ID确定特定区域范围内注册的UE的数量。
NSACF确定基于网络切片的特定区域范围内注册的UE的统计信息， 可以由是由AMF触发的。AMF可以由UE注册等事件触发，向NSACF发送统计信息更新请求，触发NSACF执行NSAC，进而确定统计信息。
如图3所示，AMF通过统计信息更新请求指示NSACF确定网络切片特定区域范围内注册的UE的数量，具体步骤包括：
步骤301：AMF被触发指示NSACF确定特定区域范围内注册的UE数量，即AMF被触发指示NSACF进行切片特定区域的注册UE的有效性检查和更新流程。
步骤302：AMF向NSACF发送统计信息更新请求，触发NSACF确定网络切片特定区域注册的UE的数量；例如，统计信息更新请求可以是：Nnsacf_NSAC_NumOfUEsUpdate_Request。其中，统计信息更新请求用于指示NSACF基于统计信息更新请求，进行切片特定区域的注册UE的有效性检查和更新流程，即确定网络切片的特定区域的注册UE的数量。
步骤304：AMF接收NSACF发送的统计信息更新请求的响应消息，向AMF指示确定的特定区域的注册UE的数量等；例如，统计信息更新请求的响应消息可以是：Nnsacf_NSAC_NumOfUEsUpdate_Response。
如此，相较只能确定整个网络切片的统计信息，上述方案能够确定基于网络切片的特定区域范围内注册的UE的统计信息，NSACF可以获取小于整个网络切片粒度的特定区域的统计信息，进而基于特定区域范围内的统计信息进行网络资源管理，满足网络运营和业务的精细化管理需求。
在一些实施例中，所述统计信息更新请求为所述AMF根据以下的至少一种事件触发的：基于UE注册到所述网络切片；基于UE从所述网络切片去注册；基于所述网络切片更新UE配置。
在一个实施例中，所述特定区域指示信息，包括以下至少之一：
小区ID；
跟踪区标识TAI；
感兴趣区域AoI的标识；
跟踪区标识列表；
服务区域的标识；
地理区域的标识。
这里，小区ID、TAI、AoI的标识、跟踪区标识列表、服务区域的标识和/或地理区域的标识均可以具有一个或多个。例如，特定区域指示信息可以包括多个小区ID，用于指示多个小区。
地理区域的标识所指示的地理区域可以是能够映射到服务区域的地理区域，如此，NSACF可以基于映射的服务区域确定统计信息。
NSACF可以基于特定区域指示信息确定特定区域范围内注册UE的统计信息。实现相对整个网络切片更小粒度的UE信息统计。满足网络运营和业务的精细化管理需求。
在一个实施例中，
所述特定区域指示信息是预先存储在所述NSACF中的；
或者，
所述特定区域指示信息是基于通信协议确定的；
或者，
所述特定区域指示信息是从消费者网络功能接收的。
特定区域指示信息可以预先存储在NSACF，当NSACF被触发时通过预先存储的特定区域指示信息确定特定区域。
特定区域指示信息也可以根据通信协议确定，当NSACF被触发时通过通信协议或通信协议中给出的计算方式确定特定区域。消费者网络功能可以包括：网络开放功能(NEF，Network Exposure Function)、者策略决策功能(PCF，Policy Decision Function)、操作维护管理系统(OAM，Operation Administration and Maintenance)和/或多NSACF部署场景时的主NSACF。
消费者网络功能可以基于自身的需求，确定特定区域。并通过特定区域指示信息向NSACF指示赶特定区域。
在一个实施例中，所述方法还包括：
接收NSACF发送的所述统计信息。
NSACF确定统计信息后，可以向AMF反馈，供AMF决策作参考，例如，AMF可以根据特定区域范围内注册UE的数量是否超出预定阈值，确定是否能够向特定区域内新增UE等。
在一个实施例中，所述统计信息更新请求为所述AMF根据以下事件触发的：基于UE注册到所述网络切片。
当发生针对网络切片的UE注册操作时，AMF可以首先确定注册操作对应的网络切片，并向注册操作对应的网络切片发送统计信息更新请求。
统计信息更新请求可以显式或隐式指示UE数量的增加。例如，UE注册到网络切片中时，统计信息更新请求可以采用预定比特位指示注册UE数量增加，或者将UE注册请求作为统计信息更新请求隐式指示注册UE数量的增加。
进行UE注册操作时，SMF可以首先执行NSACF的发现。UE可以触发AMF启动特定区域注册UE的统计流程。UE可以向AMF指示进行注册操作的网络切片的切片标识，AMF基于切片标识确定进行注册操作的网络切片，进而确定网络切片对应的NSACF。进而由AMF向确定的网络切片的NSACF发送统计信息更新请求。网络切片的切片标识可以包括S-NSSAI、和/或切片区分符等。
统计信息更新请求可以携带于针对网络切片操作的操作信息中。例如，在UE注册到所述网络切片时，可以将统计信息更新请求携带在注册请求中。
UE注册到所述网络切片，可以包括UE初始注册到网络切片中，也可 以包括UE跨AMF切换导致的移动注册更新类型的注册等。
UE注册到所述网络切片中，会引起特定区域注册UE的统计信息的变化，因此，AMF可以指示NSACF确定特定区域注册UE的统计信息。
示例性的，针对UE注册到所述网络切片场景，NSACF可以确定UE注册到所述网络切片中之前特定区域注册UE的统计信息，也可以确定UE注册到所述网络切片中之后特定区域注册UE的统计信息。
如图4所示，UE注册到所述网络切片过程中，AMF触发NSACF确定特定区域注册UE的统计信息的具体步骤包括：
步骤402：AMF向NSACF发送统计信息更新请求，如Nnsacf_NSAC_NumOfUEsUpdate_Request，该统计信息更新请求用于触发NSACF确定网络切片特定区域注册的UE的统计信息；统计信息更新请求可以通过显示或隐式方式向NSACF指示UE进行网络切片的注册。
在本公开实施例中，统计信息更新请求是AMF根据UE发送的网络切片注册请求生成的，其中该网络切片注册请求为UE发起到某个或某些网络切片的注册流程。AMF可以基于切片标识和NSACF特性等参数，执行NSACF的发现和选择，确定UE需要进行注册的网络切片，触发特定区域的注册用户数的有效性检查和更新流程。当UE发起注册到网络切片的注册流程时，可以在UE发送的注册请求中携带请求注册的网络切片的S-NSSAI，AMF可以首先确定该S-NSSAI是否存在于Allowed NSSAI中，如果存在，则执行步骤402，请求NSACF确定特定区域注册UE的统计信息。否则，可以拒绝UE注册。
统计信息更新请求中可以包括：UE的标识信息如UE ID、接入类型、请求执行NSAC的网络切片的S-NSSAI、AMF标识和更新标志。其中，请求执行NSAC的网络切片的S-NSSAI可以是一个或多个，UE可以同时请求注册多个网络切片。更新标志可以用于指示在网络切片增加UE，即UE 注册到网络切片中。
在一个实施例中，响应于AMF和该网络切片的NSACF初次交换，请求执行NSAC流程，如，第一次发送统计信息更新请求给该网络切片，AMF可以在统计信息更新请求中携带EAC需要通知到的相关端点的NF信息，由此隐式地从NSACF订阅该网络切片的EAC相关通知，如EAC是否激活等。其中，基于统计信息更新请求用于指示NSACF基于统计信息更新请求，进行切片特定区域的注册UE的有效性检查和更新流程，确定网络切片的特定区域的注册UE的统计信息，如注册UE的数量等。
响应于UE注册到所述网络切片中，NSACF更新网络切片中注册UE的数量。并确认网络切片的特定区域的注册UE的数量。
在一个实施例中，NSACF可以基于网络切片的状况，如网络切片负载、切片内已有UE数量等，确定是否允许UE注册。
步骤404：AMF接收NSACF确定网络切片的特定区域的注册UE的统计信息后，向AMF发送的统计信息更新请求的响应消息。响应消息可以包括：确定的特定区域的注册UE的数量、和/或UE注册结果等。
在一个实施例中，基于UE注册到所述网络切片触发的所述统计信息更新请求，携带有注册到所述网络切片的UE的位置信息；
所述UE的位置信息，用于供NSACF确定是否在所述统计信息中统计所述注册到所述网络切片的UE。
位置信息可以用于指示请求注册的UE所处的位置。如果请求注册的UE所处的位置对应于特定区域，则统计该UE，否则，不统计该UE。
这里，请求注册的UE所处的位置对应于特定区域，包括：请求注册的UE所处的位置位于特定区域范围内等。
示例性的，如图4所示的步骤403中，UE可以请求注册到网络切片中，由于特定区域范围只是整个网络切片的一部分，因此，UE所处的位置可能 位于特定区域范围之外，那么，NSACF确定特定区域范围内注册的UE的统计信息时可以不统计该UE。如果UE所处的位置位于特定区域范围内，那么需要统计该UE。
根据UE的位置信息确定是否统计该UE，可以提高NSAC确定统计信息的准确性。
在一个实施例中，所述位置信息，包括以下至少之一：
小区信息；
跟踪区信息。
统计信息更新请求中携带所述注册用户UE的位置信息，该UE位置信息为以下信息中的至少一种：小区信息，跟踪区信息。
在一个实施例中，
所述位置信息是从基站接收的，
和/或，
所述位置信息是从网关移动位置中心GMLC获取的。
示例性的，基站可以通过定位等方式确定UE的位置信息。可以由基站(如gNB)向AMF发送注册到所述网络切片的UE的位置信息。再由AMF发送给NSACF。或者，注册到所述网络切片的UE的位置信息可以是AMF从GMLC获取的。
在一个实施例中，响应于早期有效性检查EAC被激活，NSACF在UE注册到所述网络切片之前确定所述统计信息；
响应于所述EAC未被激活，NSACF在UE注册到所述网络切片确定所述统计信息。
早期有效性检查(EAC，Early Admission Control)可以是在NSACF进行完整鉴权前的安全性的检查。如果，EAC被激活，NSACF接收到统计信息更新请求时，可以确定已经完成了EAC，统计信息更新请求是可信的，因 此可以在注册操作之前确定所述统计信息；否则，NSACF需要进行鉴权等检查，NSACF可以在注册操作之前之后确定所述统计信息，如此，可以提高NSACF的工作效率。
在一个实施例中，为所述AMF根据以下事件触发的：基于UE从所述网络切片去注册。
可以由UE或网络发起UE的去注册。当UE从所述网络切片去注册后，AMF可以NSACF发送统计信息更新请求，指示NSACF确定统计信息。
统计信息更新请求可以显式或隐式指示UE数量的减少。进行UE去注册操作时，UE或网络可以触发AMF启动特定区域注册UE的统计流程。UE或网络可以向AMF指示进行去注册操作的网络切片的切片标识，AMF基于切片标识确定进行去注册操作的网络切片，进而由AMF向确定的网络切片发送统计信息更新请求。网络切片的切片标识可以包括S-NSSAI、和/或切片区分符等。
UE从网络切片中去注册，会引起特定区域注册UE的统计信息的变化，因此，AMF可以指示NSACF确定特定区域注册UE的统计信息。
示例性的，NSACF可以确定UE从网络切片中去注册之后特定区域注册UE的统计信息。
如图5所示，UE从网络切片去注册过程中，AMF触发NSACF确定特定区域注册UE的统计信息的具体步骤包括：
步骤502：AMF向NSACF发送统计信息更新请求，如Nnsacf_NSAC_NumOfUEsUpdate_Request，触发NSACF确定网络切片特定区域注册的UE的统计信息；统计信息更新请求可以通过显示或隐式方式向NSACF指示网络切片由于UE去注册，UE数量发生变化。
统计信息更新请求中可以包括：UE的标识信息如UE ID、接入类型、请求执行NSAC的网络切片的S-NSSAI、AMF标识和更新标志。。更新标 志可以用于指示UE数量减少，即UE从网络切片中去注册。其中，统计信息更新请求用于指示NSACF基于统计信息更新请求，进行切片特定区域的注册UE的有效性检查和更新流程，确定特定区域的注册UE的统计信息，如注册UE的数量等。
响应于UE从网络切片中去注册，NSACF更新网络切片中注册UE的数量，并确认网络切片的特定区域的注册UE的数量。
步骤504：AMF接收NSACF确定网络切片的特定区域的注册UE的统计信息后，向AMF发送的统计信息更新请求的响应消息。响应消息可以包括：确定的特定区域的注册UE的数量等。
在一个实施例中，所述统计信息更新请求为所述AMF根据以下事件触发的：基于所述网络切片更新UE配置。
UE配置可以包括：网络侧关联于UE的网络切片配置。示例性的：网络切片特定鉴权授权(Network Slice-Specific Authentication and Authorization)流程或者签约S-NSSAI流程的变更可以触发UE配置更新。
UE配置发生更新时，网络切片内UE的数量会发生变化，因此，NSACF可以确定特定区域范围内注册的UE的统计信息。
UE配置发生更新时，AMF可以向NSACF发送统计信息更新请求，由NSACF确定特定区域范围内注册的UE的统计信息。NSACF可以向AMF发生统计信息。
在一个实施例中，响应于所述EAC被激活，NSACF在更新所述UE配置之前确定所述统计信息；
响应于所述EAC未被激活，NSACF在更新所述UE配置之后确定所述统计信息。
早期有效性检查(EAC,Early Admission Control)可以是在NSACF进行完整鉴权前的安全性的检查。如果，EAC被激活，NSACF接收到统计信息 更新请求时，可以确定已经完成了EAC，统计信息更新请求是可信的，因此可以在更新所述UE配置之前确定所述统计信息；否则，NSACF需要进行鉴权等检查，NSACF可以在更新所述UE配置之后确定所述统计信息
例如，EAC模式激活，且更新标志为增加数目，则在UE配置更新消息前执行NSAC；EAC模式激活，但更新标志为减少数目以及EAC模式未激活则都在UE配置更新消息后执行NSAC。这里，执行的NSAC包括：确定网络切片特定区域范围内注册的UE的统计信息。
在一个实施例中，所述统计信息更新请求携带有切片标识；
所述统计信息更新请求，用于指示NSACF确定基于所述切片标识指示的所述网络切片的所述特定区域范围内注册的UE的所述统计信息。
AMF向NSACF发送的统计信息更新请求中可以携带有需要确定统计信息的网络切片的切片标识，这里，切片标识可以包括：S-NSSAI、切片区分符等。
NSACF可以根据切片标识确定需要确定统计信息的网络切片。由于NSACF可以对应于多个网络切片，因此，从而，通过切片标识指示网络切片，可以提高AMF指示的准确性。
在一个实施例中，所述特定区域范围具有允许注册UE的注册用户最大数量；
所述方法还包括：
接收到达最大数量指示信息，所述到达最大数量指示信息用于指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量。
这里，特定区域范围内注册的UE的数量到达注册用户最大数量，即为特定区域范围内注册的UE的数量等于注册用户最大数量。
NSACF可以为特定区域配置有注册UE的注册用户最大数量，即在特定区域范围内允许注册的最大数量阈值。
在UE注册过程中，如果网络切片当前特定区域内注册UE的数量，达到注册用户最大数量，则NSACF可以拒绝UE注册。
在一个实施例中，如果网络切片当前特定区域内注册UE的数量，达到注册用户最大数量，并且UE注册的位置信息属于特定区域内，那么，NSACF可以拒绝UE的注册请求。
在一个实施例中，响应于UE请求注册的全部网络切片的注册UE的数量，都达到各网络切片对应的注册用户最大数量，并且网络切片的签约信息中具有缺省网络切片，那么，AMF可以将一个或多个缺省网络切片放入Allow NSSAI中，作为授权允许网络切片。UE可以请求注册到授权允许的缺省网络切片中。如果网络切片的签约信息中不具有缺省网络切片，那么AMF可以拒绝该UE的注册请求。
UE注册过程中，如果网络切片当前特定区域内注册UE的数量，达到注册用户最大数量，并且UE注册的位置信息属于特定区域内，那么，NSACF可以拒绝UE的注册请求，并且通过到达最大数量指示信息向AMF指示该网络切片的切片标识。AMF可以确定注册失败的原因。同时，到达最大数量指示信息可以包括网络切片的统计信息，即当前网络切片内注册UE的数量。
在一个实施例中，所述方法还包括：
向UE发送指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量的网络切片的指示信息。
这里，特定区域范围内注册的UE的数量到达注册用户最大数量，即为特定区域范围内注册的UE的数量等于注册用户最大数量。
UE可以通过一个注册请求或者多个注册请求，请求注册多个网络切片。当一个或多个网络切片拒绝注册时，AMF可以向UE发送指示信息，指示拒绝注册的网络切片的切片标识列表，并且可以针对每个拒绝注册的 网络切片指示拒绝注册的原因，例如网络切片特定区域内注册的UE数量已经达到注册用户最大数量。
在一个实施例中，AMF还可以设置一个UE可发起重新请求注册网络切片的定时器。定时器超时时，UE可以再次发起网络切片注册请求。
以下结合上述任意实施例提供3个具体示例：
网络切片特定区域的注册用户数的统计方法包括：
1.在终端UE的注册流程中、或配置更新流程中、或去注册流程中，NSACF基于网络切片的特定区域信息执行注册用户数的统计，增加或减少该网络切片特定区域内的注册用户数量；所述特定区域信息可以配置在NSACF上，或者由5G网络中的消费者网络功能提供给NSACF。
2.所述特定区域信息，包括至少以下之一：小区(Cell)ID、跟踪区标识TAI，感兴趣的区域AoI、跟踪区标识列表TAI list、服务区域(Service Area)，可映射到服务区域(Service Area)的地理区域(Geography Area)。
3.所述消费者网络功能，可以为网络开放功能NEF，或者策略决策功能PCF，或者多个NSACF部署场景时的主NSACF。
4.所述NSACF根据注册用户的位置信息执行切片的特定区域内的注册用户数的统计。
5.所述注册用户的位置信息，为以下信息中的至少一种：小区信息，跟踪区信息等。
6.所述注册用户的位置信息，从AMF获取，在AMF发送给NSACF的请求消息中携带给NSACF。
7.所述注册用户的位置信息，由AMF从gNB中获取，在gNB发送给AMF的请求消息中携带给AMF；或者由AMF从GMLC获取。
8.NSACF在收到AMF的切片用户数更新请求消息后，对请求切片的特定区域，执行注册用户数的更新。
9.NSACF根据AMF请求消息中携带的用户位置信息，对请求切片的特定区域，执行注册用户数的更新。
10.该NSACF为网络切片内唯一部署的NSACF，或者网络切片内多个NSACF部署中的某个NSACF。
11.所述NSACF配置有网络切片特定区域允许的最大注册用户数，或网络切片特定区域内的注册用户允许阈值。
12.当网络切片特定区域内的注册用户数到达最大注册用户数或允许阈值，NSACF在发送给AMF的响应消息中，携带在切片特定区域内注册用户UE数已到达设定阈值/最大值的切片标识S-NSSAI(s),和表明已达到最大值的结果参数。
示例1：
本示例提供一个网络切片特定区域的注册用户数的有效性检查和更新流程的具体示例
网络切片特定区域的用户数有效性检查和更新流程，是针对一个网络切片在某些特定区域内，注册的终端用户数量的更新流程(增加或减少)。AMF配置了哪些网络切片需要执行该有效性检查和更新。
其中，所述特定区域信息可以配置在NSACF上，或者由5G网络中的消费者网络功能提供给NSACF(例如网络开放功能NEF，或者策略决策功能PCF，或者多个NSACF部署场景时的主NSACF等)，或者通过操作维护管理系统OAM(Operation Administration and Maintenance，OAM)配置给NSACF。
该流程中的NSACF，适用于切片内唯一部署的NSACF场景，或者切片内有多个NSACF部署中的某个NSACF的场景。
如图7所示，切片特定区域的注册用户数的有效性检查和更新流程具体包括：
步骤701：AMF被触发进行网络切片特定区域的注册UE的有效性检查和更新流程。如果AMF不知道对端NSACF，则AMF首先执行NSACF发现和选择。当某个网络切片S-NSSAI需要执行NSAC，且切片标识在Allowed NSSAI中(例如AMF请求该UE注册到该切片)，或者从Allowed NSSAI中删除(AMF请求该UE从该切片去注册)，则AMF触发网络切片的有效性检查和更新流程，更新注册终端用户数。流程的触发事件，还包括跨AMF的切换导致的Allowed NSAAI的变更。切片内可能部署有多个NSACF部署，AMF执行切片特定区域内注册用户数统计的NSAC流程时，可能会和多个NSACF执行流程交互。
这里，NSACF执行的切片特定区域信息，可以为以下信息中的至少一种：小区ID，跟踪区标识TAI，感兴趣的区域AoI，跟踪区标识列表TAI list，服务区域Service Area，可映射到服务区域Service Area的地理区域Geography Area。
AMF在以下几种情形下触发进行网络切片特定区域的注册UE的有效性检查和更新流程：
a)在终端的注册流程中，包括初始注册或跨AMF切换导致的移动注册更新类型的注册，根据是否开启了早期有效性检查EAC模式，在注册接受消息前或者后执行NSAC(例如，EAC激活状态下，在注册消息前执行NSAC流程；在EAC未激活时，在注册接受消息后执行NSAC流程)。
b)去注册流程中，在去注册流程结束后，执行NSAC流程，将该UE从统计中减掉。
c)终端的配置更新流程中，比如NSSAA切片特定的鉴权认证流程或者 签约S-NSSAI变更流程触发配置了配置更新，则根据EAC模式在配置更新消息前火候执行NSAC(例如，EAC模式激活，且更新标志为增加数目，则在UE配置更新消息前执行NSAC；EAC模式激活但更新标志为减少数目以及EAC模式未激活则都在UE配置更新消息后执行NSAC)
步骤702：AMF发送Nnsacf_NSAC_NumOfUEsUpdate_Request消息给NSACF。AMF在消息中包括终端标识UE ID、接入类型、请求执行NSAC的相关切片S-NSSAIs、AMF标识和更新标志。更新标志，表明注册用户UE的数量的增加还是减少，比如当用户注册到该切片时执行增加，当UE从该切片中去注册或注册无法继续时执行减少。
可选地，AMF还在请求消息中携带所述注册用户UE的位置信息，该UE位置信息为以下信息中的至少一种：小区信息，跟踪区信息。所述UE位置信息，可由AMF从gNB中获取，在gNB发送给AMF的请求消息中携带给AMF；或者由AMF从GMLC获取。
如果对于该切片，这是AMF和NSACF第一次交互，执行NSAC流程，AMF会在消息中携带EAC需要通知到的相关端点NF信息，由此隐式地从NSACF订阅切片的EAC相关通知。
步骤703：NSACF更新当前注册到网络切片的UE数量。例如，基于AMF在更新标志参数中提供的信息，对相应网络切片中的注册UE数量，执行增加或减少。当NSACF本地配置了切片的特定区域信息，或者收到了由消费者NF提供的切片的特定区域信息，(消费者NF包括，网络开放功能NEF，或者策略决策功能PCF，或者多个NSACF部署场景时的主NSACF)，或者通过操作维护管理系统OAM(Operation Administration and Maintenance，OAM)配置了切片的特定区域信息，NSACF对请求切片的特定区域，执行注册用户数的更新。例如，基于AMF在更新标志参数中提供 的信息，基于UE位置信息和切片的特定区域信息，对相应网络切片中的注册UE数量，执行增加或减少。
可选地，所述NSACF还配置有切片特定区域允许的最大注册用户数或切片特定区域内的注册用户允许阈值。当针对切片特定区域执行NSAC时，如果切片在该区域内达到了最大注册用户数，NSACF在返回给AMF的响应消息中携带阈值到达信息。
如果从AMF接收到EAC通知端点，NSACF存储与S-NSSAI关联的EAC通知端点，便于后续使用存储的通知端点来更新EAC模式。
步骤704：NSACF给AMF返回Nnsacf_NSAC_NumOfUEsUpdate_Response响应消息，消息中携带在切片特定区域内注册用户UE数已到达设定阈值/最大值的切片标识S-NSSAI(s),以及表明已经达到最大值的相关结果参数。
在UE注册流程中，如果只有部分切片到达了最大注册用户数，AMF会给注册UE发送一个注册接受消息，消息中，在拒绝切片列表中携带因为NSAC被拒绝的切片标识，以及相应的拒绝原因设定为切片该区域内的最大用户数已到达，可选地设置一个可发起重新请求的定时器。
当AMF发送给NSACF的请求消息中，所请求的全部切片S-NSSAI(s)都到了允许的最大值，且签约信息中如果有一个或多个签约切片标注为缺省切片，且同时不需要执行NSAC，则AMF可能会决策将这些缺省切片放入Allow NSSAI，作为授权允许切片。否则，AMF将会拒绝该用户UE的注册请求。在注册拒绝消息中，AMF携带拒绝切片标识列表，每个切片带上相应的拒绝原因值，例如切片该区域内的允许的最大注册用户数已到达。同时可选地，设置一个可发起重新请求的定时器。
可选地，该NSAC是针对切片的特定区域的执行流程，且步骤4中的返回相应消息中携带特定区域内阈值到达信息，供AMF决策作参考。
示例2：
如图8所示，在UE注册到网络切片中，切片特定区域的注册用户数的有效性检查和更新流程的具体步骤包括：
步骤801：AMF接收到UE发送的注册请求。UE注册流程中，用户向网络发起到某个或某些网络切片的注册流程，AMF基于切片标识和NSACF特性等参数，执行NSACF的发现和选择。按实施例2.2.1中步骤1的描述，触发特定区域的注册用户数的有效性检查和更新流程。
步骤802至步骤804执行的具体内容分别对应于示例1中图7所示的步骤702至步骤704，在此不再赘述。
步骤805a：如果所有请求执行NSAC的切片都到达了最大值(在该特定区域内到达了最大值，且在该切片内或切片的注册区域内也没新的阈值可更新或补充)，且根据AMF配置和其它策略信息，比如没有其它可授权的缺省切片，也没有在执行NSSAA切片特定鉴权认证流程中的切片，则AMF将拒绝该UE注册到相关网络切片，发送拒绝注册消息，同时携带相关拒绝原因值，比如阈值到达等。否则，执行步骤805b
步骤805b：在网络切片中注册UE，并执行步骤05c。
步骤805c：如果如5b中执行了常规注册流程，AMF可以发送注册接受消息(Registration Accept message)。如果，UE同时申请注册多个网络切片，其中部分注册成功，部分未注册成功，则AMF发送该消息给UE，并在消息中携带拒绝注册的网络切片标识和相应原因值，可选地会携带一个回退定时器，供UE重选发起注册。
示例3：
如图9所示，在UE注册到网络切片中，切片特定区域的注册用户数的有效性检查和更新流程的具体步骤包括：
步骤900：UE处于已注册状态，UE或网络触发UE去注册流程。
步骤901a至步骤901c：依据常规去注册流程，执行去注册流程。去注册流程触发AMF请求NSACF针对网络切片的特定区域的注册用户数的有效性检查和更新流程。
步骤902至步骤904执行的具体内容分别对应于示例1中图7所示的步骤702至步骤704，在去注册流程完成后，AMF触发针对切片的特定区域的注册用户数的有效性检查和更新流程，NSACF从各相应网络切片的特定区域内的注册UE数量中减去去注册UE的数量，从相应网络切片的注册用户数量列表中删除该UE的UE-ID。
本发明实施例还提供了一种信息传输装置，如图10所示，应用于蜂窝移动无线通信的NSACF中，其中，所述装置100包括：
处理模块110，配置为根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的UE的统计信息。
在一个实施例中，所述统计信息，包括：所述特定区域范围内注册的UE的数量。
在一个实施例中，所述特定区域指示信息，包括以下至少之一：
小区ID；
跟踪区标识TAI；
感兴趣区域AoI的标识；
跟踪区标识列表；
服务区域的标识；
地理区域的标识。
在一个实施例中，所述特定区域指示信息是预先存储在NSACF中的；
或者，
所述特定区域指示信息是消费者网络功能发送给所述NSACF的。
在一个实施例中，所述处理模块110，具体配置为：
响应于接收到接入和移动性管理功能AMF的统计信息更新请求，确定基于所述网络切片的所述特定区域范围内注册的UE的所述统计信息。
在一个实施例中，所述统计信息更新请求，为所述AMF根据以下事件至少之一触发的：
基于UE注册到所述网络切片；
基于UE从所述网络切片去注册；
基于所述网络切片更新UE配置。
在一个实施例中，基于UE注册到所述网络切片所触发的所述统计信息更新请求，携带有所述注册到所述网络切片的UE的位置信息；
所述确定基于网络切片的特定区域范围内注册的UE的统计信息，包括：
基于所述位置信息，确定是否在所述统计信息中统计所述注册到所述网络切片的UE。
在一个实施例中，所述位置信息，包括以下至少之一：
小区信息；
跟踪区信息。
在一个实施例中，所述统计信息更新请求携带有切片标识；
所述处理模块110，具体配置为：
确定基于所述切片标识指示的所述网络切片的特定区域范围内注册的UE的所述统计信息。
在一个实施例中，所述处理模块110，具体配置为：
响应于早期有效性检查EAC被激活，在UE注册到所述网络切片之前确定所述统计信息；
响应于所述EAC被激活，在更新所述UE配置之前确定所述统计信息；
响应于所述EAC未被激活，在UE注册到所述网络切片确定所述统计 信息；
响应于所述EAC未被激活，在更新所述UE配置之后确定所述统计信息。
在一个实施例中，所述装置100还包括：
第一发送模块120，配置为向AMF发送所述统计信息。
在一个实施例中，所述网络切片的所述特定区域范围具有允许注册UE的注册用户最大数量。
在一个实施例中，所述装置100还包括：
第二发送模块130，配置为响应于所述网络切片的所述特定区域范围内注册的UE的数量到达所述注册用户最大数量，向AMF发送指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量的到达最大数量指示信息。
本发明实施例还提供了一种信息传输装置，如图11所示，应用于蜂窝移动无线通信的AMF中，其中，所述装置200包括：
第三发送模块210，配置为发送统计信息更新请求，其中，所述统计信息更新请求用于指示NSACF根据特定区域指示信息，确定基于所述网络切片的特定区域范围内注册的UE的统计信息。
在一个实施例中，所述统计信息，包括：所述特定区域范围内注册的UE的数量。
在一个实施例中，所述特定区域指示信息，包括以下至少之一：
小区ID；
跟踪区标识TAI；
感兴趣区域AoI的标识；
跟踪区标识列表；
服务区域的标识；
地理区域的标识。
在一个实施例中，所述统计信息更新请求为所述AMF根据以下事件至少之一触发的：
基于UE注册到所述网络切片；
基于UE从所述网络切片去注册；
基于所述网络切片更新UE配置。
在一个实施例中，基于UE注册到所述网络切片所触发的所述统计信息更新请求，携带有注册到所述网络切片的UE的位置信息；
所述位置信息，用于供NSACF确定是否在所述统计信息中统计所述注册到所述网络切片的UE。
在一个实施例中，所述位置信息，包括以下至少之一：
小区信息；
跟踪区信息。
在一个实施例中，所述位置信息是从基站接收的，
和/或，
所述位置信息是从网关移动位置中心GMLC获取的。
在一个实施例中，所述统计信息更新请求携带有切片标识；
所述统计信息更新请求，用于指示NSACF确定基于所述切片标识指示的所述网络切片的所述特定区域范围内注册的UE的所述统计信息。
在一个实施例中，所述装置200还包括：
第一接收模块220，配置为接收NSACF发送的所述统计信息。
在一个实施例中，所述特定区域范围具有允许注册UE的注册用户最大数量；
所述装置还包括：
第二接收模块230，配置为接收到达最大数量指示信息，所述到达最大 数量指示信息用于指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量。
在一个实施例中，所述装置200还包括：
第四发送模块240，配置为向UE发送指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量的网络切片的指示信息。
在示例性实施例中，处理模块110、第一发送模块120、第二发送模块130、第三发送模块210、第一接收模块220、第二接收模块230和第四发送模块240等可以被一个或多个中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，Baseband Processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，用于执行前述方法。
图12是根据一示例性实施例示出的一种用于信息传输的装置3000的框图。例如，装置3000可以是移动电话、计算机、数字广播终端、消息收发设备、游戏控制台、平板设备、医疗设备、健身设备、个人数字助理等。
参照图12，装置3000可以包括以下一个或多个组件：处理组件3002、存储器3004、电源组件3006、多媒体组件3008、音频组件3010、输入/输出(I/O)接口3012、传感器组件3014、以及通信组件3016。
处理组件3002通常控制装置3000的整体操作，诸如与显示、电话呼叫、数据通信、相机操作和记录操作相关联的操作。处理组件3002可以包括一个或多个处理器3020来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件3002可以包括一个或多个模块，便于处理组件3002 和其他组件之间的交互。例如，处理组件3002可以包括多媒体模块，以方便多媒体组件3008和处理组件3002之间的交互。
存储器3004被配置为存储各种类型的数据以支持在装置3000的操作。这些数据的示例包括用于在装置3000上操作的任何应用程序或方法的指令、联系人数据、电话簿数据、消息、图片、视频等。存储器3004可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)、电可擦除可编程只读存储器(EEPROM)、可擦除可编程只读存储器(EPROM)、可编程只读存储器(PROM)、只读存储器(ROM)、磁存储器、快闪存储器、磁盘或光盘。
电源组件3006为装置3000的各种组件提供电力。电源组件3006可以包括电源管理系统、一个或多个电源、及其他与为装置3000生成、管理和分配电力相关联的组件。
多媒体组件3008包括在装置3000和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件3008包括一个前置摄像头和/或后置摄像头。当装置3000处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件3010被配置为输出和/或输入音频信号。例如，音频组件3010包括一个麦克风(MIC)，当装置3000处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频 信号可以被进一步存储在存储器3004或经由通信组件3016发送。在一些实施例中，音频组件3010还包括一个扬声器，用于输出音频信号。
I/O接口3012为处理组件3002和外围接口模块之间提供接口，上述外围接口模块可以是键盘、点击轮、按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件3014包括一个或多个传感器，用于为装置3000提供各个方面的状态评估。例如，传感器组件3014可以检测到装置3000的打开/关闭状态、组件的相对定位，例如组件为装置3000的显示器和小键盘，传感器组件3014还可以检测装置3000或装置3000一个组件的位置改变、用户与装置3000接触的存在或不存在、装置3000方位或加速/减速和装置3000的温度变化。传感器组件3014可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件3014还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件3014还可以包括加速度传感器、陀螺仪传感器、磁传感器、压力传感器或温度传感器。
通信组件3016被配置为便于装置3000和其他设备之间有线或无线方式的通信。装置3000可以接入基于通信标准的无线网络，如Wi-Fi、2G或3G，或它们的组合。在一个示例性实施例中，通信组件3016经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，通信组件3016还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术、红外数据协会(IrDA)技术、超宽带(UWB)技术、蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置3000可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处 理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器3004，上述指令可由装置3000的处理器3020执行以完成上述方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明实施例的其它实施方案。本申请旨在涵盖本发明实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明实施例的一般性原理并包括本公开实施例未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明实施例并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明实施例的范围仅由所附的权利要求来限制。

Claims (28)

  1. 一种信息传输方法，其中，由网络切片接纳控制功能NSACF执行，包括：
    根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的用户设备UE的统计信息。
  2. 根据权利要求1所述的方法，其中，所述统计信息，包括：所述特定区域范围内注册的UE的数量。
  3. 根据权利要求1所述的方法，其中，所述特定区域指示信息，包括以下至少之一：
    小区标识ID；
    跟踪区标识TAI；
    感兴趣区域AoI的标识；
    跟踪区标识列表；
    服务区域的标识；
    地理区域的标识。
  4. 根据权利要求1所述的方法，其中，
    所述特定区域指示信息是预先存储在所述NSACF中的；
    或者，
    所述特定区域指示信息是基于通信协议确定的；
    或者，
    所述特定区域指示信息是从消费者网络功能接收的。
  5. 根据权利要求1所述的方法，其中，所述确定基于网络切片的特定区域范围内注册的UE的统计信息，包括：
    响应于接收到接入和移动性管理功能AMF的统计信息更新请求，确定基于所述网络切片的所述特定区域范围内注册的UE的所述统计信息。
  6. 根据权利要求5所述的方法，其中，所述统计信息更新请求为所述AMF根据以下事件至少之一触发的：
    基于UE注册到所述网络切片；
    基于UE从所述网络切片去注册；
    基于所述网络切片更新UE配置。
  7. 根据权利要求6所述的方法，其中，
    基于UE注册到所述网络切片所触发的的所述统计信息更新请求，携带有所述注册到所述网络切片的UE的位置信息；
    所述确定基于网络切片的特定区域范围内注册的UE的统计信息，包括：
    基于所述位置信息，确定是否在所述统计信息中统计所述注册到所述网络切片的UE。
  8. 根据权利要求7所述的方法，其中，所述位置信息，包括以下至少之一：
    小区信息；
    跟踪区信息。
  9. 根据权利要求6所述的方法，其中，
    所述统计信息更新请求携带有切片标识；
    所述确定基于网络切片的特定区域范围内注册的用户设备UE的统计信息，包括：
    确定基于所述切片标识指示的所述网络切片的特定区域范围内注册的UE的所述统计信息。
  10. 根据权利要求6所述的方法，其中，所述确定基于网络切片的特定区域范围内注册的用UE的统计信息，包括：
    响应于早期有效性检查EAC被激活，在UE注册到所述网络切片之前 确定所述统计信息；
    响应于所述EAC被激活，在更新所述UE配置之前确定所述统计信息；
    响应于所述EAC未被激活，在UE注册到所述网络切片确定所述统计信息；
    响应于所述EAC未被激活，在更新所述UE配置之后确定所述统计信息。
  11. 根据权利要求1至10任一项所述的方法，其中，所述方法还包括：
    向AMF发送所述统计信息。
  12. 根据权利要求1至10任一项所述的方法，其中，
    所述网络切片的所述特定区域范围具有允许注册UE的注册用户最大数量。
  13. 根据权利要求12所述的方法，其中，所述方法还包括：
    响应于所述网络切片的所述特定区域范围内注册的UE的数量到达所述注册用户最大数量，向AMF发送指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量的到达最大数量指示信息。
  14. 一种信息传输方法，其中，所述方法被接入与移动性管理功能AMF执行，所述方法包括：
    发送统计信息更新请求，其中，所述统计信息更新请求用于指示网络切片接纳控制功能NSACF根据特定区域指示信息，确定基于所述网络切片的特定区域范围内注册的用户设备UE的统计信息。
  15. 根据权利要求14所述的方法，其中，所述统计信息，包括：所述特定区域范围内注册的UE的数量。
  16. 根据权利要求14所述的方法，其中，所述特定区域指示信息，包括以下至少之一：
    小区标识ID；
    跟踪区标识TAI；
    感兴趣区域AoI的标识；
    跟踪区标识列表；
    服务区域的标识；
    地理区域的标识。
  17. 根据权利要求14所述的方法，其中，所述统计信息更新请求为所述AMF根据以下事件至少之一触发的：
    基于UE注册到所述网络切片；
    基于UE从所述网络切片去注册；
    基于所述网络切片更新UE配置。
  18. 根据权利要求17所述的方法，其中，基于UE注册到所述网络切片所触发的所述统计信息更新请求，携带有注册到所述网络切片的UE的位置信息；
    所述位置信息，用于供NSACF确定是否在所述统计信息中统计所述注册到所述网络切片的UE。
  19. 根据权利要求18所述的方法，其中，所述位置信息，包括以下至少之一：
    小区信息；
    跟踪区信息。
  20. 根据权利要求18所述的方法，其中，
    所述位置信息是从基站接收的，
    和/或，
    所述位置信息是从网关移动位置中心GMLC获取的。
  21. 根据权利要求14所述的方法，其中，
    所述统计信息更新请求携带有切片标识；
    所述统计信息更新请求，用于指示NSACF确定基于所述切片标识指示的所述网络切片的所述特定区域范围内注册的UE的所述统计信息。
  22. 根据权利要求14至21任一项所述的方法，其中，所述方法还包括：
    接收NSACF发送的所述统计信息。
  23. 根据权利要求14至21任一项所述的方法，其中，
    所述特定区域范围具有允许注册UE的注册用户最大数量；
    所述方法还包括：
    接收到达最大数量指示信息所述到达最大数量指示信息用于指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量。
  24. 根据权利要求23所述的方法，其中，所述方法还包括：
    向UE发送指示所述特定区域范围内注册的UE的数量到达所述注册用户最大数量的网络切片的指示信息。
  25. 一种信息传输装置，其中，包括：
    处理模块，配置为根据特定区域指示信息，确定基于网络切片的特定区域范围内注册的用户设备UE的统计信息。
  26. 一种信息传输装置，其中，所述装置包括：
    第三发送模块，配置为发送统计信息更新请求，其中，所述统计信息更新请求用于指示网络切片接纳控制功能NSACF根据特定区域指示信息，确定基于所述网络切片的特定区域范围内注册的用户设备UE的统计信息。
  27. 一种通信设备装置，包括处理器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，其中，所述处理器运行所述可执行程序时执行如权利要求1至13或14至24任一项所述信息传输方法的步骤。
  28. 一种存储介质，其上存储有可执行程序，其中，所述可执行程序被处理器执行时实现如权利要求1至13或14至24任一项所述信息传输方法的步骤。
PCT/CN2022/072181 2022-01-14 2022-01-14 信息传输方法、装置、通信设备和存储介质 WO2023133861A1 (zh)

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