CN116056048B - Method for sharing subscription information of inter-system users under 5G service architecture eSBA - Google Patents
Method for sharing subscription information of inter-system users under 5G service architecture eSBA Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18545—Arrangements for managing station mobility, i.e. for station registration or localisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
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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
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method for sharing subscription information among different systems under a 5G service architecture eSBA, which is based on a 5G core network function framework, so that subscription information for 5G terminal access and session management can be stored in a satellite core network and can be pushed and registered into the 5G core network through the method provided by the invention.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for sharing subscription information of users between different systems under a 5G service architecture eSBA.
Background
The 3GPP fifth generation communication system (5G) only proposes wireless side satellite networking (NTN non-terrestrial networks) without core network side network sharing architecture research content. The user is connected to a 5G base station (gNB) via an air interface, the backhaul network of the 5G base station is provided by satellite trunking to a remote 5G core network, and the user is finally connected to a Data Network (DN) via a 5G data pipe relayed by satellite. It should be noted that the 5G system and the satellite system as relay node of the 5G backhaul network are completely independent and controlled by the respective core networks. There is no signaling interaction architecture and method between the two systems.
The satellite and the 5G networking form a network architecture of an air-ground integrated system and operated and maintained by a unified operator, the satellite operator operates a 5G network and deploys 5G base stations and 5G core network functions, and part of the 5G network functions reuse 5G core network function network elements deployed on the ground. The satellite core network establishes a data forwarding pipeline of a satellite user plane to be used as a control plane and a user plane data forwarding channel of a 5G ground station, and the architecture has the following two problems:
1: the satellite system and the 5G system can disclose data without sharing means. When 5G user subscription information is stored (S-UDM, satellite UDM) with a Satellite core network element of a 5G network, the user subscription information cannot be shared to a 5G core network data management network element UDM (where the user subscription information belongs to a Satellite control plane message, and there is no method for forwarding the Satellite control plane message through a Satellite user plane that relays only the 5G control plane and user plane messages), so that access and mobility management network elements (AMF, access and Mobility Management Function) and session management network elements (SMF, session Management Function) belonging to the 5G core network cannot acquire the user subscription information and manage and control user access and session management through the 5G core network data management network element UDM.
2: the satellite system cannot reuse the deployed network functions (AMF and SMF in the 5G core network) of the 5G system to access the user subscription data stored in the satellite core network for user access and session management control. The working stand of the 3GPP NTN standard only considers the air interface side, and no method for sharing the cross-system network functions between the air-ground integrated satellite core network and the 5G core network exists. Because the satellite user plane is adopted to uniformly forward the information of the 5G control plane and the data plane, the 5G core network control plane and the satellite core network control plane have no information interaction means, and the AMF and SMF of the 5G core network control plane can not access the user subscription information stored in the S-UDM through the existing 5G based on the home roaming architecture.
Disclosure of Invention
The invention aims at providing a method for sharing subscription information of different systems under a 5G service architecture eSBA in the scene that a satellite network and a 5G network are operated by a unified operator in the research direction of a 3GPP and CCSA air-ground integrated network and a satellite and a 5G system are required to be networked and realize data and function sharing, and solves the problems that the 5G user can realize 5G service subscription through the satellite network under the condition that a relay pipeline from the satellite to a 5G core network is unavailable and the subscription information cannot realize subscription information sharing and function sharing under the condition that control plane information is relayed based on the satellite service plane pipeline.
In order to achieve the purpose of the invention, the following technical scheme is provided.
The invention provides a method for sharing subscription information of inter-system users under a 5G service architecture eSBA, which comprises the following steps:
s1: the 5G terminal user signs 5G service information through the satellite core network control plane of the 5G networking, and stores the sign information in the satellite core network unified data management network element S-UDM;
s2: the method comprises the steps that when a satellite is connected with a satellite core network, the satellite core network is connected with a 5G core network, or a user moves to the coverage area content of a 5G ground station to initiate network access and session service, a unified data management network element S-UDM of the satellite core network pushes user subscription information to a data management network element UDM of the 5G core network;
s3: after receiving user subscription information from a 5G core network control plane network element, a 5G core network data management network element UDM associates the context information with an access and mobility management network element AMF or a session management network element SMF if a user associated with the user subscription information already has context information in the 5G core network data management network element UDM through a subscription data management subscription service of the access and mobility management network element AMF or the session management network element SMF, and sends a user associated information change notification to the access and mobility management network element AMF or the session management network element SMF through a subscription data management notification service of the 5G core network unified data management network element UDM; otherwise, the access and mobility management network element AMF or session management network element SMF performs access management and session management system flow for the user through the subscription data management acquisition service of the 5G core network unified data management network element UDM.
Preferably, in the step S1, the 5G core network data management network element UDM provides services according to authentication information and subscription information of the user in the initial access registration stage of the user subscription, and the mobility registration update and session management stage after successful registration provides services according to parameters of the 5G core network control plane network element, and injects subscription information generated by the application function AF into the initial access registration stage of the user subscription and the session management stage after successful registration, so as to implement management and control of the user subscription and matching of session service QoS.
Preferably, the subscription information in the step S1 includes user access and mobility subscription data, session management subscription information, and network slice selection auxiliary information.
Preferably, the step S2 includes the following substeps:
s2.1: the unified data management network element S-UDM of the satellite core network carries subscription information to the network exposure function NEF of the 5G core network control surface network element according to the availability of the relay pipeline and the mobility transmission creation/update/deletion request of a user;
s2.2: after receiving the subscription information from the satellite core network unified data management network element S-UDM, the network exposure function NEF of the 5G core network control plane network element sends a creating/updating/deleting request and carries the subscription information to the 5G core network data management network element UDM.
Preferably, in step S3, the user context information exists in the 5G core network data management network element UDM, and includes control plane session management information user context with registered management status as registered or user already exists in the 5G core network data management network element UDM.
Preferably, the user-related information change notification and subscription data management acquisition in step S3 includes all or part of user access and mobility subscription data, session management subscription information, and network slice selection auxiliary information acquired from the satellite core network unified data management network element S-UDM.
Preferably, in the step S3, the user-related information change notification and subscription data management obtaining service performs access management and session management on the user, and the system flow is defined by using TS 23.502.
The invention is based on the 5G core network function framework, so that subscription information for 5G terminal access and session management can be stored in a satellite core network of a 5G network, and can be pushed and registered into the 5G core network by the method provided by the invention, the satellite core network element can be used as an external network element of the 5G core network to be fused into a 5G framework, and meanwhile, the existing function of the 5G core network is reused to cooperate with other deployment network elements of a heterogeneous network, thereby effectively improving the sharing possibility of subscription information and user context of the 5G between different systems, improving the function usability of the existing network element, reducing the deployment complexity of the network element in the different systems, further reducing the network deployment cost and ensuring the efficiency by reusing the existing network function of the 5G system.
Drawings
Fig. 1 is a schematic diagram of inter-system user subscription information sharing of a 5G signaling interaction architecture according to the present invention;
fig. 2 is a schematic diagram of user subscription information acquisition at the initial access and session management flow stage in the present invention;
fig. 3 is a flow chart of injecting UDM through NEF and notifying AMF and SMF of expected user behavior generated by AF defined in existing TS 23.502.
Detailed Description
Embodiments of the present invention will be described in detail with reference to examples. Those skilled in the art will understand that the following examples are only preferred embodiments of the present invention to facilitate a better understanding of the present invention, and thus should not be construed as limiting the scope of the present invention. Various changes and modifications may be made by one skilled in the art without departing from the spirit and principles of the invention, and any such modifications are intended to be included within the scope of the invention. The experimental methods in the following examples are all conventional methods unless otherwise specified, and the experimental materials used are all purchased from conventional biochemical reagent manufacturers unless otherwise specified.
A method for sharing subscription information of different systems under a 5G service architecture eSBA includes the following steps:
s1:5G terminal users sign up 5G service information with a satellite core network control plane of the 5G networking, and store the sign up information in a satellite core network unified data management network element S-UDM; the subscription information comprises user access and mobility subscription data, session management subscription information and network slice selection auxiliary information;
in the step, a unified data management network element UDM of a 5G core network provides service for authentication information and subscription information of a user in an initial access registration stage of a subscriber, a registration update stage caused by mobility and a session management stage after successful registration, and the subscription information generated by an application function AF is injected into the initial access registration stage of the subscriber subscription and the session management stage after successful registration through parameters of the unified data management network element UDM of the 5G core network, so that management and control of the subscriber subscription and matching of session service QoS are realized.
S2: the method comprises the steps that when a satellite is connected with a satellite core network, the satellite core network is connected with a 5G core network, or a user moves to the coverage area content of a 5G ground station to initiate network access and session service, a unified data management network element S-UDM of the satellite core network pushes user subscription information to a data management network element UDM of the 5G core network;
said step S2 comprises the sub-steps of:
s2.1: the unified data management network element S-UDM of the satellite core network sends a creation/update/deletion request carrying user subscription information to the network exposure function network element NEF of the 5G core network control plane network element;
s2.2: after receiving the subscription information from the satellite core network unified data management network element S-UDM, the network exposure function network element NEF of the 5G core network control plane network element sends a creating/updating/deleting request carrying the subscription information to the 5G core network unified data management network element UDM.
S3: after receiving user subscription information from a 5G core network control plane network element NEF, a 5G core network data management network element UDM associates the context information with an access and mobility management network element AMF or a session management network element SMF if a user associated with the user subscription information has context information in the 5G core network unified data management network element UDM through a subscription data management subscription service of the access and mobility management network element AMF or the session management network element SMF, and sends a user associated information change notification to the access and mobility management network element AMF or the session management network element SMF through a subscription data management notification service of the 5G core network unified data management network element UDM; otherwise, the access and mobility management network element AMF or session management network element SMF triggers the access management and session management system flow to the user through the subscription data management acquisition service of the 5G core network data management network element UDM.
In the step, the 5G core network unified data management network element UDM has context information, wherein the context information comprises the control plane session management information of a registered user or a registered user in the registration management state of the user; all or part of the user association information change notification comprises user access and mobility subscription data, session management subscription information and network slice selection auxiliary information which are acquired from a satellite core network unified data management network element S-UDM; the subscription data management obtaining service performs access management on the user and defines a system flow by using TS23.502 along with a session management system flow.
In step S1, as shown in fig. 2, the initial access and session management flow after user subscription is unified by the 5G core network data management network element UDM in the management service information of the user identifier, subscription data, and authentication data in the 5G system. The 5G core network controls the user access to the network, mobility management, session establishment and modification according to authentication information and subscription information of the user in an initial access registration stage and a session management stage after successful registration.
In step S3, the flow of injecting subscription information into the UDM and notifying the AMF and SMF is shown in fig. 3, and the 5G core network data management network element UDM injects subscription information (expected UE Behavioral information) generated by the application function (AF, application Function) into the registration and session management process of the 5G core network through the parameter providing (parameter provision) service of the 5G core network control plane network element, so as to implement the matching of user behavior management and session service QoS. The subscription information is finally updated to the UDM by means of a parameter push service (nudm_parameter provision) between the 5G core network control plane element and the UDM, and the access and mobility management element (AMF, access and MobilityManagement Function) and the session management element (SMF, session Management Function) are triggered by means of a Notification function (nudm_sdm_notification) of the UDM.
Example 1:
as shown in fig. 1, in the schematic diagram of inter-system user subscription information sharing of the 5G signaling interaction architecture of the present invention, firstly, due to the connection availability of the 5G core network and the satellite core network and the requirement of cloud architecture deployment, an operator deploys S an S-UDM to a control plane on the satellite, a 5G terminal user subscribes to 5G service information with the satellite core network control plane of the 5G network, and stores the subscription information in a unified data management network element S-UDM of the satellite core network. The subscription information includes user access and mobility subscription data (Access and Mobility Subscription Data), session management subscription information (Session Management Subscription Data), and network slice selection assistance information (NSSAI Network SliceSelection Assistance Information) defined in TS 29.503. After the satellite is available in connection with the satellite core network and the 5G core network, or after the user mobility enters the coverage area of the 5G ground station, the stored subscription information is updated to the 5G core network data management network element UDM through the 5G core network control surface network element, and the specific steps are as follows:
(1) The satellite core network unified data management network element S-UDM stores satellite and 5G dual-mode terminal satellite subscription information and 5G subscription information. When the satellite is available in connection with the satellite core network and the satellite core network user plane and the 5G core network are available in connection, or the terminal enters the coverage of the 5G gNB on the ground, the satellite core network unified data management network element S-UDM transmits 5G subscription information of the terminal to the 5G core network UDM through the parameter providing (Nnef_parameter provision) service of the 5G core network control plane network element NEF (TS 23.502, TS 29.522); the newly added subscription carrying information in the request of creating/updating/deleting the parameter providing service of the 5G core network control plane network element NEF includes user access and mobility subscription data (Access and Mobility Subscription Data), session management subscription information (Session Management Subscription Data) and network slice selection auxiliary information (NSSAI Network SliceSelection Assistance Information) adopt the existing format in the corresponding UDM (TS 29.503).
(2) After receiving 5G terminal subscription information from a satellite core network S-UDM, a 5G core network control plane network element NEF (TS 23.502, TS 29.522) provides a parameter providing creation/Update/deletion request (nudm_parameter provision_create/Update/Delete) to a 5G core network UDM function network element through a parameter providing (nudm_parameter provision) service of the 5G core network control plane unified data management UDM network element; the newly added subscription-carrying information in the request for creating/updating/deleting the UDM parameter providing service includes the user access and mobility subscription data (Access and Mobility Subscription Data), the session management subscription information (Session Management Subscription Data) and the network slice selection auxiliary information (NSSAI Network Slice Selection Assistance Information) follow the existing format in the UDM (TS 29.503) carried in the request for creating/updating/deleting the 5G core network control plane network element NEF parameter providing service.
(3) After the UDM receives the user subscription information from the 5G core network control plane network element, if the user associated with the user subscription information already exists in the UDM through a subscription data management subscription (nudm_sdm_subscriber) service of the UDM via the AMF or SMF (UEContext), for example, a control plane session management (SM: session Management) information user context (SM UEContext) with a Registered management state of the Registered (RM-Registered) or user already exists in the UDM, the UDM associates the parameter with the AMF or SMF and notifies the AMF and SMF of the user associated information change through nudm_sdm_notification. The notification includes all or part of user access and mobility subscription data (Access and Mobility Subscription Data), session management subscription information (Session Management Subscription Data) and network slice selection assistance information (NSSAI Network SliceSelection Assistance Information) acquired from the satellite core network S-UDM; otherwise, the UDM has no user context step, and the AMF and SMF perform access management and session management system flows for the user by using the UDM subscription data management acquisition (nudm_sdm_get) service and defining the system flow by using the existing TS 23.502.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The method for sharing the subscription information of the inter-system users under the 5G service architecture eSBA is characterized by comprising the following steps:
s1:5G terminal users sign up 5G service information with a satellite core network control plane of the 5G networking, and store the sign up information in a satellite core network unified data management network element S-UDM;
s2: the unified data management network element S-UDM of the satellite core network pushes the user subscription information to the 5G core network data management network element UDM of the 5G core network when the satellite is connected with the satellite core network, the satellite core network is connected with the 5G core network and available or the user moves to the coverage area content of the 5G ground station to initiate network access and session service, and the method specifically comprises the following substeps:
s2.1: the unified data management network element S-UDM of the satellite core network sends a creating/updating/deleting request according to the subscription information and sends the request to the network exposure function NEF of the 5G core network control surface network element;
s2.2: after receiving subscription information from a satellite core network unified data management network element S-UDM, a network exposure function NEF of a 5G core network control plane network element sends a creating/updating/deleting request according to the subscription information and sends the request to the 5G core network data management network element UDM;
s3: after receiving user subscription information from a 5G core network control plane network element, a 5G core network data management network element UDM associates the context information with an access and mobility management network element AMF or a session management network element SMF if a user associated with the user subscription information already has context information in the 5G core network data management network element UDM through a subscription data management subscription service of the access and mobility management network element AMF or the session management network element SMF, and sends a user associated information change notification to the access and mobility management network element AMF or the session management network element SMF through a subscription data management notification service of the 5G core network data management network element UDM; otherwise, the access and mobility management network element AMF or session management network element SMF performs access management and session management system flow on the user through the subscription data management acquisition service of the 5G core network data management network element UDM.
2. The method for sharing subscription information of inter-system users under the 5G service architecture eSBA according to claim 1, wherein the method comprises the following steps: in the step S1, the 5G core network data management network element UDM provides a service according to authentication information and subscription information of the user in an initial access registration stage and a session management stage after successful registration of the user subscription through parameters of the network exposure function NEF, and injects subscription information generated by the application function AF into the initial access registration stage and the session management stage after successful registration of the user subscription, so as to implement management and control of the user subscription and matching of session service QoS.
3. The method for sharing subscription information of inter-system users under the 5G service architecture eSBA according to claim 1, wherein the method comprises the following steps: the subscription information in step S1 includes user access and mobility subscription data, session management subscription information, and network slice selection auxiliary information.
4. The method for sharing subscription information of inter-system users under the 5G service architecture eSBA according to claim 1, wherein the method comprises the following steps: the context information exists in the 5G core network data management network element UDM in step S3, including the control plane session management information user context with registered or user as the registration management state already exists in the UDM.
5. The method for sharing subscription information of inter-system users under the 5G service architecture eSBA according to claim 1, wherein the method comprises the following steps: the user associated information change notification in step S3 includes all or part of user access and mobility subscription data, session management subscription information, and network slice selection auxiliary information acquired from the satellite core network unified data management network element S-UDM.
6. The method for sharing subscription information of inter-system users under the 5G service architecture eSBA according to claim 1, wherein the method comprises the following steps: in the step S3, the sign-on data management obtaining service performs access management on the user and the session management system flow uses TS23.502 to define the system flow.
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