CN112714407B - Method, device and network management system for interworking NSA network and SA network - Google Patents
Method, device and network management system for interworking NSA network and SA network 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
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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Abstract
The invention provides a method, a device and a network management system for interworking between an NSA network and an SA network, which are used for carrying out signaling conversion on a control surface according to an NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling, and further, a data message corresponding to the signaling is forwarded on a user surface; the method solves the problem that in the related art, after a user roams from an NSA network to an SA network, the current 4/5G network elements cannot be directly communicated, the visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service. The method, the device and the network management system for interworking between the NSA network and the SA network finish interworking between 4G and 5G network signaling, and realize that NSA users can access and enjoy 5G service in 5G mode after roaming to the SA network.
Description
Technical Field
The embodiment of the invention relates to the technical field of mobile communication networks, in particular to a method for interworking an NSA (Non-Standalone, independent networking) network and an SA (Standalone, independent networking) network, a device for interworking an NSA network and an SA network and a network management system.
Background
Mobile communication is most advantageous over fixed access in that the subscriber's location is mobile, called roaming, if the subscriber moves outside the range of the base station controlled by the local office. Roaming is classified into two modes, LBO (Local BreakOut, local breakout access) and HR (Home-Routed, home routing access) according to whether traffic needs to detour to Home.
Fig. 1 is a schematic diagram of LBO roaming interoperation. As shown in fig. 1, after the UE (User Equipment) roams from the h PLMN (home Public Land Mobile Network ) to vPLMN (visited Public Land Mobile Network, visited public land mobile Network), if it is a 4G access, it will go from the MME (Mobility MANAGEMENT ENTITY, mobility management unit) of the visited place to the SGW (SERVING GATEWAY ), where the SGW includes SGW-C (serving Gateway control plane function) and serving Gateway User plane function SGW-U, and finally access the Internet directly through the PGW (PACKET DATA Network Gateway) of the visited place, where the PGW includes PGW-C (PDN GATEWAY, PDN Gateway control plane function) and PGW-U (PDN GATEWAY, PDN Gateway User plane function); if the access is 5G, the mobile terminal directly accesses the Internet from the AMF (ACCESS AND Mobility Management function, access and mobility management function entity) to the SMF (Session Management function, session management function entity) and PGW-C of the visiting place through the UPF (User plane function, user plane function entity) and PGW-U of the visiting place. The associated policy is determined by the visited PCF (visited Policy Control Function ) and the home PCF (home Policy Control Function, home policy control entity). It should be understood that, in fig. 1, the prefix "v" before each noun indicates a visited place, and the prefix "h" indicates a roaming place, which are the same in the following.
Fig. 2 is a schematic diagram of HR roaming interoperation. As shown in fig. 2, after the UE roams from the h PLMN to the vPLMN network, if the 4G access, the UE will go from the MME of the visited place to the SGW of the visited place (SGW-C, SGW-U) and route to the PGW of the home place (PGW-C, PGW-U), and access the Internet from the home place. If the access is 5G, the SMF of the visiting place and the SMF of the home place are selected from the AMF of the visiting place, and finally the Internet is accessed through the UPF of the home place.
In actual operation, LBO (visitor access) is generally adopted for domestic roaming to avoid traffic impact on backbone networks, while HR home roaming agreements are generally adopted for international roaming involving fee and security reasons.
In the process of 5G evolution, the progress of each operator is inconsistent, and there is a high probability that the home location is an EPS (Evolved PACKET SYSTEM ) network, or a 5G NSA network, where NR is only an auxiliary node of an E-UTRAN base station, the core network is still an EPC (Evolved Packet Core, evolved packet core network), and the visited location has been upgraded to an SA 5GC (5G Core Network) network.
As shown in fig. 3, if the user roams from the NSA network to the SA network, the current 4/5G network element cannot directly communicate with each other, and the visiting place can only fall back to the 4G for access, so that the user cannot enjoy the 5G high-speed service.
Disclosure of Invention
The method for interworking NSA network and SA network, the device for interworking NSA network and SA network and the network management system mainly solve the technical problems that in the related art, after a user roams from NSA network to SA network, as 4/5G network elements cannot be directly interworked at present, a visiting place can only fall back to 4G for access, and the user cannot enjoy 5G high-speed service.
In order to solve the above technical problems, an embodiment of the present invention provides a method for interworking an NSA network and an SA network, including:
performing signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling;
And forwarding the data message corresponding to the signaling at the user plane.
The embodiment of the invention also provides a device for interworking an NSA network and an SA network, which comprises a first network element;
The first network element is configured to perform signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, where the signaling conversion includes conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling; and forwarding the data message corresponding to the signaling at the user plane.
The embodiment of the invention also provides a network management system which comprises the device for interworking the NSA network and the SA network, wherein the device is deployed at the international gateway office position.
The beneficial effects of the invention are as follows:
The method for interworking NSA network and SA network, the device for interworking NSA network and SA network and the network management system provided by the embodiment of the invention perform signaling conversion on a control plane according to the NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises the conversion from SA network signaling to NSA network signaling or the conversion from NSA network signaling to SA network signaling, and further, the data message corresponding to the signaling is forwarded on a user plane; the method solves the problem that in the related art, after a user roams from an NSA network to an SA network, the current 4/5G network elements cannot be directly communicated, the visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service. Namely, the method for interworking NSA network and SA network, the device for interworking NSA network and SA network and the network management system provided by the embodiment of the invention complete interworking of 4G and 5G network signaling, and realize that NSA users can access and enjoy 5G service in 5G mode after roaming to SA network.
Additional features and corresponding advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of LBO roaming interoperation in the related art;
FIG. 2 is a schematic diagram of HR roaming interoperation in the related art;
Fig. 3 is a schematic diagram of a network architecture of an NSA user roaming to access under an SA network in the related art;
Fig. 4 is a basic flow chart of a method for interworking an NSA network and an SA network according to a first embodiment of the present invention;
Fig. 5 is a basic flow chart of generating a NSA network-SA network subscription data mapping table according to a first embodiment of the present invention;
Fig. 6 is a schematic structural diagram of an apparatus for interworking an NSA network and an SA network according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram II of a device for interworking an NSA network and an SA network according to a second embodiment of the present invention;
Fig. 8 is a schematic structural diagram of a first network element according to a second embodiment of the present invention;
Fig. 9 is a schematic structural diagram of a network management system according to a third embodiment of the present invention;
fig. 10 is a schematic diagram of a network architecture for accessing an NSA user roaming under an SA network according to a third embodiment of the present invention;
Fig. 11 is a basic flow diagram of a UE registering in an SA network and initiating a basic session establishment according to the fourth embodiment of the present invention;
Fig. 12 is a basic flow chart of initiating update at a network side according to a fifth embodiment of the present invention;
fig. 13 is a basic flow chart of a UE initiated session modification provided in the sixth embodiment of the present invention;
fig. 14 is a basic flow chart of a UE initiated session release provided in the seventh embodiment of the present invention;
fig. 15 is a basic flow chart of initiating session release at the network side according to the eighth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is given with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Embodiment one:
In order to solve the problem that after a user roams from an NSA network to an SA network in the related art, as the current 4/5G network element cannot be directly communicated, a visiting place can only fall back to 4G for access, and the user cannot enjoy 5G high-speed service, the embodiment of the invention provides a method for interworking an NSA network and the SA network, and signaling conversion is performed on a control plane according to a NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling, and further, a data message corresponding to the signaling is forwarded on a user plane; referring to fig. 4, fig. 4 is a basic flow chart of a method for interworking an NSA network and an SA network according to the present embodiment.
S401: and carrying out signaling conversion on a control plane according to the NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling.
Optionally, in the embodiment of the present invention, before performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, at least the following steps are further included, as shown in fig. 5:
S501: acquiring NSA network subscription data and a 4G authentication vector parameter set;
s502: and generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter group.
Optionally, in the embodiment of the present invention, acquiring NSA network subscription data and a set of 4G authentication vector parameters includes:
Acquiring NSA network subscription data and a 4G authentication vector parameter set from an HLR (Home Subscriber Server, a home subscriber server) or an HSS (Home Location Register, a home location register) through a Gr/S6d interface or an S6a interface;
Generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter set, including:
and converting NSA network subscription data by using the 4G authentication vector parameter group to generate SA network subscription data, and generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the SA network subscription data.
Optionally, the NSA network-SA network subscription data mapping table generated in the embodiment of the present invention includes mobility management subscription data, slice selection subscription data, session management function entity SMF selection subscription data, and session management subscription data. For example, please refer to tables one to four, which are respectively an NSA network-SA network mobility management subscription data mapping table, an NSA network-SA network slice selection subscription data mapping table, an NSA network-SA network SMF selection subscription data mapping table, and an NSA network-SA network session management subscription data mapping table.
List one
Watch II
Watch III
Table four
Optionally, in the embodiment of the present invention, signaling conversion is performed on a control plane according to an NSA network-SA network subscription data mapping table, including:
registering with the repository function NRF in the home SMF hSMF role and interacting with the visitor SMF vSMF with an N16 message;
The SGW-C serving as a serving gateway control plane function sends or receives S8-C signaling of the home PDN gateway PGW.
It should be understood that in the embodiment of the present invention, signaling conversion is performed on the control plane according to the NSA network-SA network subscription data mapping table, which further includes:
Conversion of EPC QoS traffic flow template EPC QoS TFT and 5G QoS Profile/Rule;
and accessing a Domain Name System (DNS), and inquiring and selecting a home packet data network management (PGW).
Optionally, in the embodiment of the present invention, forwarding, at a user plane, a data packet corresponding to a signaling includes:
interaction of the N9 user plane uplink and downlink messages with the visiting place UPF vUPF by the attribution place UPF hUPF role;
and S8-U user plane messages of the home PDN gateway PGW are sent or received by serving as a serving gateway user plane function SGW-U.
It should be understood that, in the embodiment of the present invention, forwarding, at a user plane, a data packet corresponding to a signaling further includes:
And switching and managing the S8u tunnel and the N9 tunnel.
Optionally, in the embodiment of the present invention, before performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, the method further includes:
Allocating and managing the user EPS bearing identifier EBI;
and accessing a Domain Name System (DNS), and inquiring and selecting a home packet data network management (PGW).
Optionally, in the embodiment of the present invention, in a process of performing signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, the method further includes:
And charging when receiving the charging instruction, and executing a charging function.
Optionally, in the embodiment of the present invention, in a process of performing signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, the method further includes:
And monitoring when receiving the monitoring instruction, and executing a monitoring function.
S402: and forwarding the data message corresponding to the signaling at the user plane.
According to the method for interworking between the NSA network and the SA network, which is provided by the embodiment of the invention, the signaling conversion is carried out on a control surface according to the NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises the conversion from SA network signaling to NSA network signaling or the conversion from NSA network signaling to SA network signaling; further, forwarding the data message corresponding to the signaling at the user plane; the method solves the problem that in the related art, after a user roams from an NSA network to an SA network, the current 4/5G network elements cannot be directly communicated, the visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service. The method for interworking NSA network and SA network provided by the embodiment of the invention completes interworking of 4G and 5G network signaling, realizes that NSA users can enjoy 5G service in 5G mode access after roaming to SA network, and greatly improves user experience satisfaction.
Embodiment two:
In order to solve the problem that in the related art, after a user roams from an NSA network to an SA network, because the current 4/5G network elements cannot be directly communicated, a visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service, as shown in fig. 6, the embodiment of the invention provides a device for communicating the NSA network with the SA network, wherein the device for communicating the NSA network with the SA network comprises a first network element 601; wherein:
The first network element 601 is configured to perform signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, where the signaling conversion includes conversion from SA network signaling to NSA network signaling, or conversion from NSA network signaling to SA network signaling;
and forwarding the data message corresponding to the signaling at the user plane.
It should be understood that in the embodiment of the present invention, the first network element 601 is referred to as a Roaming GW.
Optionally, referring to fig. 7, the apparatus for interworking an NSA network and an SA network further includes a second network element 602, where:
the second network element 602 is configured to obtain NSA network subscription data and a set of 4G authentication vector parameters;
And generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter set.
Optionally, in the embodiment of the present invention, the second network element 602 acquires NSA network subscription data and a set of 4G authentication vector parameters, including:
Acquiring NSA network subscription data and a 4G authentication vector parameter set from an inventory HLR/HSS through a Gr/S6d interface or an S6a interface;
the second network element 602 generates an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the set of 4G authentication vector parameters, including:
and converting NSA network subscription data by using the 4G authentication vector parameter group to generate SA network subscription data, and generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the SA network subscription data.
Optionally, the NSA network-SA network subscription data mapping table generated in the embodiment of the present invention includes mobility management subscription data, slice selection subscription data, session management function entity SMF selection subscription data, and session management subscription data. For example, please refer to tables one to four in the first embodiment, and the description thereof is omitted.
Optionally, referring to fig. 8, a first network element 601 in the embodiment of the present invention includes four first sub-network elements, which are a first sub-network element one hSMF, a first sub-network element two hUPF, a first sub-network element three SGW-C, and a first sub-network element four SGW-U, respectively; wherein:
The first subnet element one hSMF is configured to register with the repository function NRF in the home SMF hSMF role and interact with the visited SMF vSMF with an N16 message;
The first sub-network element is used for serving as a serving gateway control plane function SGW-C to send or receive S8-C signaling of a home PDN gateway PGW;
The first sub-network element two hUPF is used for interacting the N9 user plane uplink and downlink message with the visiting place UPF vUPF by using the role of the home place UPF hUPF;
the first sub-network element four SGW-U is used as a serving gateway user plane function SGW-U to send or receive S8-U user plane messages of a home PDN gateway PGW.
Optionally, in the embodiment of the present invention, the first subnet element one hSMF and the first subnet element three SGW-C perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, and further includes:
Conversion of EPC QoS traffic flow template EPC QoS TFT and 5G QoS Profile/Rule;
and accessing a Domain Name System (DNS), and inquiring and selecting a home packet data network management (PGW).
Optionally, in the embodiment of the present invention, the first sub-network element two hspf and the first sub-network element four SGW-U forward the data packet corresponding to the signaling at the user plane, and further include:
And switching and managing the S8u tunnel and the N9 tunnel.
It should be understood that, in the embodiment of the present invention, the first subnet element one hSMF and the first subnet element three SGW-C perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table; the first sub-network element two hUPF and the first sub-network element four SGW-U are data messages corresponding to the forwarding signaling in the user plane.
Optionally, the first network element 601 in the embodiment of the present invention further includes a first subnet element five and a first subnet element six; wherein:
The first sub-network element five is used for distributing and managing the user EPS bearing identifier EBI;
The first subnet element six is used for accessing the domain name system DNS, inquiring and selecting the home location packet data network management PGW.
It should be understood that the steps performed by the first sub-network element five and the first sub-network element six precede the steps performed by the first sub-network element one hSMF and the first sub-network element three SGW-C.
Optionally, the first network element 601 in the embodiment of the present invention further includes a first sub-network element seven and a first sub-network element eight; wherein:
The first sub-network element seven is used for charging when receiving a charging instruction in the process of signaling conversion on a control surface according to the NSA network-SA network subscription data mapping table, and executing a charging function;
The first sub-network element eight is used for monitoring when receiving a monitoring instruction in the process of signaling conversion on a control plane according to the NSA network-SA network subscription data mapping table, and executing a monitoring function.
Optionally, in the embodiment of the present invention, when the user moves to the coverage area of only the 4G base station in the SA network, the local service gateway SGW selects the first network element 601 as PGW access, where the first network element 601 completes the proxy PGW operation.
The device for interworking NSA network and SA network provided by the embodiment of the invention comprises a first network element, wherein the first network element performs signaling conversion on a control plane according to a NSA network-SA network subscription data mapping table, and the signaling conversion comprises conversion from SA network signaling to NSA network signaling or from NSA network signaling to SA network signaling; further, forwarding the data message corresponding to the signaling at the user plane; the method solves the problem that in the related art, after a user roams from an NSA network to an SA network, the current 4/5G network elements cannot be directly communicated, the visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service. The device for interworking NSA network and SA network provided by the embodiment of the invention completes interworking of 4G and 5G network signaling, realizes that NSA users can enjoy 5G service in 5G mode access after roaming to SA network, and greatly improves user experience satisfaction.
Embodiment III:
In order to solve the problem that in the related art, after a user roams from an NSA network to an SA network, because the current 4/5G network element cannot directly communicate with each other, the visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service, as shown in fig. 9, the embodiment of the invention provides a network management system, which includes the device 701 for communicating the NSA network with the SA network in the second embodiment; referring also to fig. 10, the devices for interworking between NSA network and SA network are deployed at the international gateway location.
It should be noted that, in order to avoid redundancy, in this embodiment, not all examples of the apparatus for interworking between the NSA network and the SA network in the second embodiment are not fully described, and it should be clear that all examples in the second embodiment are applicable to this embodiment.
The network management system provided by the embodiment of the invention comprises a device for interworking an NSA network and an SA network, which are deployed at the position of an International gateway office, wherein the device is used for carrying out signaling conversion on a control plane according to a NSA network-SA network subscription data mapping table, and the signaling conversion comprises conversion from SA network signaling to NSA network signaling or from NSA network signaling to SA network signaling; further, forwarding the data message corresponding to the signaling at the user plane; the method solves the problem that in the related art, after a user roams from an NSA network to an SA network, the current 4/5G network elements cannot be directly communicated, the visiting place can only fall back to the 4G for access, and the user cannot enjoy the 5G high-speed service. The network management system provided by the embodiment of the invention completes the intercommunication of 4G and 5G network signaling, realizes that the NSA user can access and enjoy the 5G service in a 5G mode after roaming to the SA network, and greatly improves the experience satisfaction degree of the user.
Embodiment four:
the embodiments of the present invention are described by taking the process of registering the UE in the SA network and initiating the basic session establishment as an example on the basis of the above embodiments.
S1101: the UE has accessed the 5G network and initiates a PDU session establishment request.
S1102: the AMF initiates an SMF query request to the NRF (monolithic wireless transceiver), selects vSMF according to vPLMN, selects hSMF (i.e., the routing GW) according to hPLMN.
S1103: the AMF initiates a session establishment request to vSMF, carrying the paging GW address.
S1104: vSMF determines that this is a Roaming user call and the Roaming mode is a return home access, then forwards the session establishment request to hSMF (i.e., the Roaming GW).
S1105: the Roaming GW inquires session subscription data of the user from the NSA/SA IWF, and if the charging function is started, the charging flow is initiated.
S1106: the Roaming GW inquires the PGW address from the iDNS, completes the mapping from DNN to APN, establishes tunnel resources, allocates EBI, and initiates S8 a session establishment request to the home PGW.
S1107: the PGW initiates an IP-CAN session establishment request to the PCRF (Policy AND CHARGING Rules Function) and returns a session establishment response to the SGW-C (i.e., the Roaming GW).
S1108: the rolling GW receives the PGW response, converts the QoS parameters of EPC Bearer into 5G QosFlow parameters, maps the S1u tunnel into an N3 tunnel, and sends a session establishment accept response to vSMF.
S1109: vSMF, receiving the response from the paging GW, invoking the N1N2MESSAGETRANSFER (N1, N2 port messaging) service of the AMF, and returning a session establishment acceptance response to the UE.
S1110: AMF interacts with NR and UE, and the following normal flow of 5G is not described one by one.
S1111: if the UE requests an IPv6 type session, the PGW may send an RA message, which is passed to the NR through the Roaming GW, and finally to the UE side.
Fifth embodiment:
The embodiment of the invention is described by taking the process of initiating update by a network side as an example on the basis of the above embodiments, for example, AMF initiates Rx Request to Request PCRF to establish language private;
s1201: the PGW receives the policy update request of the PCRF, creates a local bearer, and initiates a request for creating the local bearer to the visited SGW (i.e., the Roaming GW).
S1202: the Roaming GW creates a local bearing, completes a plurality of downlink S8u bearing GTPU (GPRS Tunnelling Protocol for User Plane, user plane GPRS tunneling protocol) tunnels, aggregates the downlink S8u bearing GTPU tunnels to one GTPU tunnel of N9, otherwise maps uplink QosFlow traffic received by an N9 port to a plurality of S8u tunnels, and initiates a session update request to vSMF.
S1203: vSMF invokes an N1N2MESSAGETRANSFER (N1N 2message translation) service, initiating a session update request to the AMF.
S1204: the AMF initiates an N2 session request to the NR, carrying QosFlow resources, and an N1SM message to the UE.
S1205: the UE returns a PDU session update complete response.
S1206: the AMF carries the N1SM message through session update request signaling.
S1207: vSMF forwards a PDU session update complete response to hSMF (i.e., the rolling GW).
S1208: the signaling GW converts the N16 signaling into a bearer creation response message of S8 and transmits the bearer creation response message to the PGW.
The flow of bearer update and bearer deletion is similar and will not be described in detail here.
Example six:
The embodiments of the present invention are described based on the above embodiments, taking a process of initiating session modification by UE as an example, where the UE triggers session modification during internet surfing, for example: request to establish a new QosFlow.
S1301: the UE initiates a session update request to the network.
S1302: the AMF invokes vSMF's PDUSessionUpdateSMContext Request (PDU session update SM content request) service, carrying the UE's session update request.
S1303: vSMF invokes a PDUSession Update Request (session update request) service of hSMF (i.e., the Roaming GW), carrying a session update request for the UE.
S1304: the rolling GW converts Qosflow the information, establishes a bearing tunnel and initiates a bearing resource command to the PGW.
S1305: the PGW reports the bearer establishment request to the Roaming GW, and if the request is received by the network side, the subsequent procedure is the same as in the fifth embodiment, which is not described herein.
The Qosflow modification and deletion procedure for the UE request is similar.
Embodiment seven:
The embodiments of the present invention are described based on the above embodiments by taking a procedure in which a UE initiates session release as an example.
S1401: the UE needs to release a single session and initiate a PDU session release request to the network.
S1402: the AMF invokes vSMF's PDUSessionUpdateSMContext Request (PDU session update SM content request) service, carrying the UE's session release request.
S1403: vSMF invokes the PDUSession Update Request (PDU session update) service of hSMF (i.e., the streaming GW), carrying the session release request for the UE.
S1404: the scrolling GW returns a session release request response to vSMF.
S1405: the paging GW initiates a session release request to the PGW.
S1406: the PGW initiates an IP-CAN session exchange request to the PCRF, releases local session resources, and returns a session release request response to the SGW (i.e. the Roaming GW).
S1407: the paging GW releases the core network tunnel resources and invokes Nsmf _ PDUSession _update (Nsmf _PDU session request) service to vSMF, initiating a PDU session release request to the UE.
S1408: vSMF sends a session update response to the AMF, carrying to the UE an N1SM container (PDU session release command) to release the PDU session of the UE.
S1409: the AMF forwards the session release command to the UE.
S1410: and the UE responds to the session release command and returns a session release result.
S1411: the AMF forwards the session release result to vSMF.
S1412: vSMF informs hSMF (i.e., the paging GW) of the session release result of the UE.
Example eight:
the embodiment of the invention is described by taking the process of initiating session release at the network side as an example on the basis of the above embodiments.
S1501: the PGW receives an IP-CAN Session Modification (IP-CAN session modification) from the PCRF, and indicates that the session needs to be terminated, initiates a release bearer request to the visited SGW (i.e., the Roaming GW), and deletes the default bearer of the session, i.e., releases the entire session.
S1502: the rolling GW releases core network tunnel resources and invokes PDU Session Update Request (PDU session update request) service of vSMF requesting deletion of the session.
S1503: vSMF invokes an N1N2MESSAGETRANSFER (N1N 2message translation) service of the AMF, initiating a session release request to the AMF.
S1504: the AMF initiates an N2 resource release request to the NR and sends a PDU session release command to the UE.
S1505: and the UE returns a session release result.
S1506: the AMF forwards the session release result to vSMF.
S1507: vSMF informs hSMF (i.e., the Roaming GW) of the session release result of the UE.
S1508: the paging GW converts the N16 signaling into a default bearer deleting response of S15 and sends the default bearer deleting response to the PGW.
Example nine:
the embodiment of the present invention further provides a computer readable storage medium, where one or more programs are stored, and the one or more programs may be executed by one or more processors to implement the steps of the method for interworking an NSA network and an SA network as in the first embodiment.
Computer-readable storage media include volatile or nonvolatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media includes, but is not limited to, RAM (Random Access Memory ), ROM (Read-Only Memory), EEPROM (ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY, charged erasable programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact Disc Read-Only Memory), digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
It will be apparent to those skilled in the art that all or some of the steps of the methods disclosed above, the apparatus in which the NSA network and the SA network communicate, the functional modules/units in the apparatus may be implemented as software (which may be implemented in program code executable by a computing apparatus), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media), for execution by a computing device, and in some cases, the steps shown or described may be performed in a different order than that described herein. The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art.
Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media. Therefore, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a further detailed description of embodiments of the invention in connection with the specific embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. A method of interworking an NSA network with an SA network, comprising:
The first network element performs signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling;
The first network element forwards the data message corresponding to the signaling at the user plane;
wherein, before the signaling conversion is performed on the control plane according to the NSA network-SA network subscription data mapping table, the method further includes:
the second network element acquires NSA network subscription data and a 4G authentication vector parameter set;
and the second network element generates an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter group.
2. The method for interworking an NSA network with an SA network of claim 1, wherein the acquiring the set of NSA network subscription data and the 4G authentication vector parameters includes:
acquiring NSA network subscription data and a 4G authentication vector parameter set from a home subscriber server HLR or a home location register HSS through a Gr/S6d interface or an S6a interface;
generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter set includes:
and converting the NSA network subscription data by using the 4G authentication vector parameter set to generate SA network subscription data, and generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the SA network subscription data.
3. The method of interworking an NSA network with a SA network of claim 1, wherein the NSA network-SA network subscription data map includes mobility management subscription data, slice selection subscription data, session management function SMF selection subscription data, and session management subscription data.
4. The method for interworking between NSA network and SA network according to claim 1, wherein the signaling conversion in the control plane according to the NSA network-SA network subscription data mapping table includes:
registering with the repository function NRF in the home SMF hSMF role and interacting with the visitor SMF vSMF with an N16 message;
S8-C signaling of a home PDN gateway PGW is sent or received by serving as a serving gateway control plane function SGW-C;
the forwarding the data message corresponding to the signaling at the user plane includes:
interaction of the N9 user plane uplink and downlink messages with the visiting place UPF vUPF by the attribution place UPF hUPF role;
and S8-U user plane messages of the home PDN gateway PGW are sent or received by serving as a serving gateway user plane function SGW-U.
5. The method for interworking an NSA network with an SA network according to claim 4, wherein the signaling conversion is performed according to the NSA network-SA network subscription data mapping table before the control plane, further comprising:
Allocating and managing the user EPS bearing identifier EBI;
Access to domain name system DNS, querying and selecting home packet data gateway PGW.
6. The method for interworking between NSA network and SA network according to any of claims 1-5, wherein the signaling conversion in the control plane according to the NSA network-SA network subscription data mapping table further includes:
And charging when receiving the charging instruction, and executing a charging function.
7. The method for interworking between NSA network and SA network according to any of claims 1-5, wherein the signaling conversion in the control plane according to the NSA network-SA network subscription data mapping table further includes:
And monitoring when receiving the monitoring instruction, and executing a monitoring function.
8. An apparatus for interworking an NSA network with an SA network, the apparatus comprising a first network element;
the first network element is configured to perform signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, where the signaling conversion includes conversion from SA network signaling to NSA network signaling or conversion from NSA network signaling to SA network signaling;
forwarding the data message corresponding to the signaling at the user plane;
wherein the apparatus further comprises a second network element;
The second network element is used for acquiring NSA network subscription data and a 4G authentication vector parameter set;
And generating an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter set.
9. The apparatus for interworking between an NSA network and a SA network of claim 8 wherein the first network element is selected by the local serving gateway SGW for PGW access when the subscriber moves to a 4G-only base station coverage area in the SA network, the first network element performing proxy PGW operations.
10. A network management system comprising a device for interworking an NSA network with an SA network according to any one of claims 8-9, the device being deployed at an international gateway location.
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| EP4413755A1 (en) * | 2021-10-10 | 2024-08-14 | Cisco Technology, Inc. | Evolved packet core to 5g core roaming using n9 interface |
| CN114363912B (en) * | 2021-12-28 | 2024-08-06 | 天翼物联科技有限公司 | Data transmission method, system, computer device and storage medium of heterogeneous network |
| CN116321112A (en) * | 2022-12-30 | 2023-06-23 | 天翼物联科技有限公司 | 5G terminal NSA (service oriented architecture) SA (SA upgrading method and device, computer equipment and storage medium |
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