CN112714407A - Method, device and network management system for intercommunication between NSA network and SA network - Google Patents
Method, device and network management system for intercommunication between NSA network and SA network Download PDFInfo
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Abstract
The invention provides a method, a device and a network management system for intercommunication between an NSA network and an SA network.A control plane carries out signaling conversion according to an NSA-SA network signing data mapping table, wherein the signaling conversion comprises the conversion from an SA network signaling to an NSA network signaling or from the NSA network signaling to the SA network signaling, and further, a data message corresponding to the signaling is forwarded on a user plane; the problem that in the related technology, after the user roams from the NSA network to the SA network, the current 4/5G network element can not be communicated directly, and the visited place can only fall back to the 4G for access, so that the user can not enjoy the 5G high-speed service is solved. Namely, the method, the device and the network management system for interworking between the NSA network and the SA network, which are provided by the invention, complete the interworking of 4G and 5G network signaling, and realize that the NSA user can access and enjoy 5G services in a 5G mode after roaming to the SA network.
Description
Technical Field
The present invention relates to, but not limited to, the field of mobile communication network technologies, and in particular, to, but not limited to, a method for interworking an NSA (Non-standard one) network and an SA (standard one) network, an apparatus for interworking an NSA network and an SA network, and a network management system.
Background
Compared with fixed access, the greatest advantage of mobile communication is the mobility of the subscriber location, which is called roaming if the subscriber moves out of range of the base station controlled by the local station. Whether roaming needs to detour to the Home or not according to the telephone traffic is divided into two modes, namely LBO (Local BreakOut, Local BreakOut access) and HR (Home-Routed, Home routing access).
Fig. 1 is a schematic view of LBO roaming interoperation. As shown in fig. 1, after a UE (User Equipment) roams from an h PLMN (home Public Land Mobile Network) to a vpmn (visited Public Land Mobile Network), if it is a 4G access, the UE will access from a MME (Mobile Management unit) at the visited place to an SGW (Serving Gateway) including an SGW-C (Serving Gateway control plane function) and a Serving Gateway User plane function SGW-U, and finally access the Internet directly through a PGW (Packet Data Gateway) at the visited place, wherein the PGW includes a PGW-C (PDN Gateway control plane function) and a PDN-U (PDN Gateway User plane function); if the Access is 5G Access, the Internet is directly accessed from the AMF (Access and Mobility Management function entity) to the SMF (Session Management function entity) and the PGW-C (packet data network-Management function entity) of the visited place and finally through the UPF (User plane function entity) and the PGW-U of the visited place. The relevant Policy is determined by a visited Policy Control Function (PCF) and a home Policy Control Function (PCF). It should be understood that the prefix "v" before each noun in fig. 1 represents a visited place, the prefix "h" represents a roaming place, and the following is the same.
Fig. 2 is a schematic view 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 is performed, the UE will access the Internet from the home location by going from the MME at the visited location to the SGW (SGW-C, SGW-U) at the visited location and routing to the PGW at the home location (PGW-C, PGW-U). And if the access is 5G access, selecting the SMF of the visit place and the SMF of the home place from the AMF of the visit place, and finally accessing the Internet through the UPF of the home place.
In actual operation, for domestic roaming, in order to avoid traffic impact on a backbone network, LBO (visited access) is generally adopted, and for international roaming, which involves cost and security reasons, a general operator roaming agreement all adopts a method of HR returning to a home.
In the process of 5G development, the operators are not consistent in progress, and there is a high possibility 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, a Core Network is still an EPC (Evolved Packet Core), and a visited location is already 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, since the 4/5G network elements cannot directly communicate with each other at present, the visited place can only fall back to 4G for access, and thus the user cannot enjoy the 5G high-speed service.
Disclosure of Invention
The method for intercommunication between NSA network and SA network, the device for intercommunication between NSA network and SA network and the network management system provided by the embodiment of the invention mainly solve the technical problem that after a user roams from the NSA network to the SA network in the related technology, because the current 4/5G network element can not be directly intercommunicated, a visited place can only fall back to 4G for access, and the user can not enjoy 5G high-speed service.
To solve the above technical problem, an embodiment of the present invention provides a method for interworking between an NSA network and an SA network, including:
performing 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;
and forwarding the data message corresponding to the signaling on the user plane.
The embodiment of the invention also provides a device for intercommunication between the NSA network and the SA network, which comprises a first network element;
the first network element is used for performing 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; and forwarding the data message corresponding to the signaling on the user plane.
The embodiment of the invention also provides a network management system, which comprises the device for intercommunication between the NSA network and the SA network, wherein the device is arranged at the position of the international gateway.
The invention has the beneficial effects that:
the method for interworking between the NSA network and the SA network, the device for interworking between the NSA network and the 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 an SA network signaling to an NSA network signaling or from an NSA network signaling to an SA network signaling, and further forward a data message corresponding to the signaling on a user plane; the problem that in the related technology, after the user roams from the NSA network to the SA network, the current 4/5G network element can not be communicated directly, and the visited place can only fall back to the 4G for access, so that the user can not enjoy the 5G high-speed service is solved. That is, the method for interworking between the NSA network and the SA network, the apparatus for interworking between the NSA network and the SA network, and the network management system provided in the embodiments of the present invention complete interworking between 4G network signaling and 5G network signaling, and enable an NSA user to access and enjoy a 5G service in a 5G standard after roaming to the SA network.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious 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 diagram illustrating LBO roaming interoperation in the related art;
FIG. 2 is a diagram illustrating HR roaming interoperation in the related art;
fig. 3 is a schematic diagram illustrating a network architecture for an NSA subscriber roaming to an SA network in the related art;
fig. 4 is a schematic basic flowchart of a method for interworking between an NSA network and an SA network according to an embodiment of the present invention;
fig. 5 is a schematic basic flowchart for generating an NSA network-SA network subscription data mapping table according to an embodiment of the present invention;
fig. 6 is a first schematic structural diagram of an apparatus for interworking between an NSA network and an SA network according to a second embodiment of the present invention;
fig. 7 is a second schematic structural diagram of an apparatus for interworking between 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 an NSA subscriber roaming to an SA network according to a third embodiment of the present invention;
fig. 11 is a schematic diagram of a basic flow of registering a UE in an SA network and initiating establishment of a basic session according to a fourth embodiment of the present invention;
fig. 12 is a schematic basic flow chart of a network side initiated update according to a fifth embodiment of the present invention;
fig. 13 is a schematic basic flowchart of a UE initiated session modification according to a sixth embodiment of the present invention;
fig. 14 is a schematic basic flowchart of a UE initiating session release according to a seventh embodiment of the present invention;
fig. 15 is a schematic basic flow chart of a network-side initiated session release according to an eighth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
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 be directly communicated, a visited place can only fall back to 4G for access, and the user cannot enjoy 5G high-speed services, the embodiment of the invention provides a method for communicating an NSA network and the SA network, wherein signaling conversion is carried out on a control plane according to an NSA network-SA network signed data mapping table, wherein the signaling conversion comprises conversion from an SA network signaling to an NSA network signaling or from the NSA network signaling to the SA network signaling, and further, a data message corresponding to the signaling is forwarded on the user plane; referring to fig. 4, fig. 4 is a basic flowchart illustrating a method for interworking between an NSA network and an SA network according to the present embodiment.
S401: and performing 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, before performing signaling conversion at the control plane according to the NSA network-SA network subscription data mapping table in the embodiment of the present invention, at least the following steps are further included, please refer to 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, the acquiring the NSA network subscription data and the 4G authentication vector parameter set in the embodiment of the present invention includes:
acquiring NSA network subscription data and a 4G authentication vector parameter group from an HLR (Home Subscriber Server) or an HSS (Home Location Register) through a Gr/S6d interface or an S6a interface;
generating a NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter group, wherein the mapping table comprises:
and converting the 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 a NSA network-SA network mobility management subscription data mapping table, a 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, respectively.
Watch 1
Watch two
Watch III
Watch four
Optionally, in the embodiment of the present invention, performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table includes:
registering with a storage function NRF in a home SMF hSMF role, and interacting an N16 message with a visited SMF vSMF;
the SGW-C, as a serving gateway control plane function, sends or receives S8-C signaling for the home PDN gateway PGW.
It should be understood that, in the embodiment of the present invention, performing signaling conversion at the control plane according to the NSA network-SA network subscription data mapping table further includes:
the conversion of EPC QoS service flow template EPC QoS TFT and 5G QoS Profile/Rule QoS Profile/Rule;
accessing a Domain Name System (DNS), and inquiring and selecting a packet data network management (PGW) of a home location.
Optionally, forwarding a data packet corresponding to the signaling on the user plane in the embodiment of the present invention includes:
interacting N9 user plane uplink and downlink messages with UPF vUPF of the visit place in the role of UPF hUPF of the home location;
and the SGW-U is used as a service gateway user plane function to send or receive S8-U user plane messages of a home PDN gateway PGW.
It should be understood that, in the embodiment of the present invention, forwarding a data packet corresponding to a signaling on a user plane further includes:
and switching and managing the S8u tunnel and the N9 tunnel.
Optionally, before performing signaling conversion at the control plane according to the NSA network-SA network subscription data mapping table in the embodiment of the present invention, the method further includes:
allocating and managing user EPS bearing identification EBI;
accessing a Domain Name System (DNS), and inquiring and selecting a packet data network management (PGW) of a home location.
Optionally, in the embodiment of the present invention, in the process of performing signaling conversion at the control plane according to the NSA network-SA network subscription data mapping table, the method further includes:
and charging when receiving the charging instruction, and executing the charging function.
Optionally, in the embodiment of the present invention, in the process of performing signaling conversion at the control plane according to the 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 on the user plane.
The NSA network and SA network intercommunication method provided by the embodiment of the invention carries out signaling conversion on a control plane according to an NSA network-SA network signing data mapping table, wherein the signaling conversion comprises the conversion from an SA network signaling to an NSA network signaling or from the NSA network signaling to the SA network signaling; further, forwarding the data message corresponding to the signaling on the user plane; the problem that in the related technology, after the user roams from the NSA network to the SA network, the current 4/5G network element can not be communicated directly, and the visited place can only fall back to the 4G for access, so that the user can not enjoy the 5G high-speed service is solved. That is, the method for interworking between the NSA network and the SA network provided in the embodiment of the present invention completes interworking between 4G and 5G network signaling, and realizes that the NSA user can access and enjoy the 5G service in a 5G standard after roaming to the SA network, thereby greatly improving the experience satisfaction of the user.
Example two:
in order to solve the problem that in the related art, after a user roams from an NSA network to an SA network, since the current 4/5G network element cannot be directly communicated, a visited place can only fall back to 4G for access, and the user cannot enjoy a 5G high-speed service, please refer to fig. 6, an embodiment of the present invention provides a device for the intercommunication of an NSA network and an SA network, where the device for the intercommunication of an NSA network and an SA network includes a first network element 601; wherein:
the first network element 601 is configured to perform signaling conversion on a control plane according to the NSA network-SA network subscription data mapping table, where the signaling conversion includes conversion from an SA network signaling to an NSA network signaling, or conversion from an NSA network signaling to an SA network signaling;
and forwarding the data message corresponding to the signaling on 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 between 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 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 group.
Optionally, in this embodiment of the present invention, the acquiring, by the second network element 602, the NSA network subscription data and the 4G authentication vector parameter set includes:
acquiring NSA network subscription data and a 4G authentication vector parameter group from an HLR/HSS stock 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 4G authentication vector parameter set, including:
and converting the 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 described in the first embodiment, which are not described herein.
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 hfpf, a first sub-network element three SGW-C, and a first sub-network element four SGW-U, respectively; wherein:
the first sub-network element-hSMF is used for registering to the storage function NRF in the role of home SMF hSMF and interacting N16 message with the visited SMF vSMF;
the first subnet element III is used 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 II hUPF is used for interacting the uplink and downlink messages of the N9 user plane with the UPF vUPF of the visited place in the role of the UPF hUPF of the home location;
the first sub-network element four SGW-U is used as a serving gateway user plane function SGW-U to send or receive an S8-U user plane message of a home PDN gateway PGW.
Optionally, in the embodiment of the present invention, the signaling conversion is performed by the first hSMF and the third SGW-C according to the NSA network-SA network subscription data mapping table in the control plane, and the method further includes:
the conversion of EPC QoS service flow template EPC QoS TFT and 5G QoS Profile/Rule QoS Profile/Rule;
accessing a Domain Name System (DNS), and inquiring and selecting a packet data network management (PGW) of a home location.
Optionally, in the embodiment of the present invention, the forwarding, by the first secondary network element two hfpf and the first secondary network element four SGW-U, the data packet corresponding to the signaling on the user plane further includes:
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 hSMF and the third SGW-C perform signaling conversion in 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 signaling forwarded on the user plane.
Optionally, the first network element 601 in this embodiment of the present invention further includes a first sub-network element five and a first sub-network element six; wherein:
the first subnet element five is used for the allocation and management of the user EPS bearing identification EBI;
and the sixth sub-network element is used for accessing a Domain Name System (DNS) and inquiring and selecting a packet data network management (PGW) of a home location.
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 this embodiment of the present invention further includes a first sub-network element seventh and a first sub-network element eighth; wherein:
the first sub-network element seven is used for charging and executing a charging function when receiving a charging instruction in the process of carrying out signaling conversion on a control plane according to the NSA network-SA network subscription data mapping table;
and the first sub-network element eight is used for monitoring and executing a monitoring function when receiving a monitoring instruction in the process of carrying out signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table.
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 serving gateway SGW selects the first network element 601 as PGW access, where the first network element 601 completes proxy PGW work.
The device for intercommunication between the NSA network and the SA network provided by the embodiment of the invention comprises a first network element, wherein the first network element carries out signaling conversion on a control plane according to a NSA network-SA network signing data mapping table, wherein the signaling conversion comprises the conversion from an SA network signaling to an NSA network signaling or the conversion from the NSA network signaling to the SA network signaling; further, forwarding the data message corresponding to the signaling on the user plane; the problem that in the related technology, after the user roams from the NSA network to the SA network, the current 4/5G network element can not be communicated directly, and the visited place can only fall back to the 4G for access, so that the user can not enjoy the 5G high-speed service is solved. That is, the apparatus for interworking between the NSA network and the SA network provided in the embodiment of the present invention completes interworking between 4G network signaling and 5G network signaling, and realizes that an NSA user can access and enjoy a 5G service in a 5G standard after roaming to the SA network, thereby improving the experience satisfaction of the user to a great extent.
Example three:
in order to solve the problem that in the related art, after a user roams from an NSA network to an SA network, since the current 4/5G network element cannot be directly communicated, a visited place can only fall back to 4G for access, and the user cannot enjoy a 5G high-speed service, please refer to fig. 9, an embodiment of the present invention provides a network management system, which includes a device 701 for communicating the NSA network and the SA network described in the second embodiment; meanwhile, please refer to fig. 10, the apparatus for interworking between the NSA network and the SA network is deployed at an international gateway.
It should be noted that, for the sake of non-redundant description, all examples of the apparatus for interworking between the NSA network and the SA network in the second embodiment are not fully described in this embodiment, 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 intercommunication between an NSA network and an SA network, which is deployed at the position of an international gateway, wherein the device is used for carrying out signaling conversion on a control plane according to an NSA network-SA network subscription data mapping table, wherein the signaling conversion comprises the conversion from an SA network signaling to an NSA network signaling or the conversion from the NSA network signaling to the SA network signaling; further, forwarding the data message corresponding to the signaling on the user plane; the problem that in the related technology, after the user roams from the NSA network to the SA network, the current 4/5G network element can not be communicated directly, and the visited place can only fall back to the 4G for access, so that the user can not enjoy the 5G high-speed service is solved. That is, the network management system provided in the embodiment of the present invention completes the intercommunication of the 4G and 5G network signaling, and realizes that the NSA user can access and enjoy the 5G service in the 5G mode after roaming to the SA network, thereby greatly improving the experience satisfaction of the user.
Example four:
on the basis of the above embodiments, the embodiments of the present invention take the process of registering the UE in the SA network and initiating the basic session establishment as an example.
S1101: the UE has accessed the 5G network and initiates a PDU session establishment request.
S1102: AMF sends SMF inquiry request to NRF (monolithic wireless transceiver), selects vSMF according to vPLMN, and selects hSMF (Roaming GW) according to hPLMN.
S1103: and the AMF initiates a session establishment request to the vSMF, and carries the Roaming GW address.
S1104: and the vSMF judges that the call is a Roaming user call and the Roaming mode is home access, and forwards a session establishment request to the hSMF (namely Roaming GW).
S1105: and the Roaming GW inquires session subscription data of the user from the NSA/SA IWF, and if the charging function is started, a charging process is initiated.
S1106: and the Roaming GW inquires a PGW address from the iDNS, completes the mapping from the DNN to the APN, establishes tunnel resources, distributes the EBI and initiates an S8 session establishment request to the home PGW.
S1107: the PGW initiates an IP-CAN session establishment request to a PCRF (Policy and Charging Rules Function), and returns a session establishment response to the SGW-C (i.e., Roaming GW).
S1108: and the Roaming GW receives the response of the PGW, converts the QoS parameter of the EPC Bearer into a 5G Qosflow parameter, maps the S1u tunnel into an N3 tunnel, and sends a session establishment acceptance response to the vSMF.
S1109: and the vSMF receives the response of the Roaming GW, calls the N1N2MessageTransfer (message transmission ports N1 and N2) service of the AMF, and returns a session establishment acceptance response to the UE.
S1110: the AMF interacts with NR and UE, and is not described with the 5G normal flow in the following.
S1111: if the UE requests an IPv6 type session, the PGW sends an RA message, which is transmitted to the NR via the Roaming GW, and finally to the UE side.
Example five:
on the basis of the above embodiments, the embodiment of the present invention is described by taking a process of initiating an update by a network side as an example, for example, an AMF initiates an Rx Request to Request a PCRF to establish a language specific load;
s1201: the PGW receives a policy update request of the PCRF, creates a local bearer, and initiates a request for creating the local bearer to a visited SGW (i.e., Roaming GW).
S1202: the Roaming GW creates a local bearer, completes downlink S8u multiple bearer GTPU (GPRS tunneling Protocol for User Plane, User Plane GPRS tunnel Protocol) tunnels, aggregates the multiple bearer GTPU tunnels to the N9 GTPU tunnels, otherwise maps uplink QosFlow flow received by the N9 port to multiple S8u tunnels, and initiates a session update request to the vSMF.
S1203: the vSMF invokes the N1N2MessageTransfer (N1N 2message conversion) 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: and the UE returns a PDU session update completion response.
S1206: the AMF carries the N1SM message through session update request signaling.
S1207: and forwarding the PDU session update completion response to the hSMF (namely the Roaming GW) by the vSMF.
S1208: the Roaming GW converts the N16 signaling into a bearer creation response message of S8 and sends the message to the PGW.
The procedures of bearer update and bearer deletion are similar and are not described herein again.
Example six:
on the basis of the above embodiments, the embodiments of the present invention are described by taking a process of initiating session modification by UE as an example, and in the process of uploading, the UE triggers session modification, such as: requesting to establish a new QosFlow.
S1301: the UE initiates a session update request to the network.
S1302: the AMF calls a PDU session update SMContext Request (PDU session update SM content Request) service of the vSMF, and carries the session update Request of the UE.
S1303: the vSMF calls a session Update Request (session Update Request) service of the hSMF (namely, Roaming GW), and carries the session Update Request of the UE.
S1304: and the Roaming GW converts the Qosflow 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 that in the fifth embodiment, which is not described herein again.
The Qosflow modification and deletion procedures requested by the UE are similar.
Example seven:
on the basis of the above embodiments, the embodiments of the present invention take a process in which a UE initiates a session release as an example for explanation.
S1401: the UE needs to release a single session and initiate a PDU session release request to the network.
S1402: the AMF calls a PDSUSESUUpdateSMContext Request (PDU session update SM content Request) service of the vSMF, and carries a session release Request of the UE.
S1403: the vSMF calls a PDU session Update (PDU session Update) service of the hSMF (namely routing GW), and carries a session release Request of the UE.
S1404: the Roaming GW returns a session release request response to the vSMF.
S1405: and the Roaming 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 (namely Roaming GW).
S1407: the Roaming GW releases the core network tunnel resource, calls an Nsmf _ PDSSESSION _ Update (Nsmf _ PDU session request) service to the vSMF, and initiates a PDU session release request to the UE.
S1408: the vSMF sends a session update response to the AMF, carrying an N1SM container (PDU session release command) to the UE to release the PDU session for 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 the vSMF.
S1412: the vSMF informs the hSMF (i.e., Roaming GW) of the session release result of the UE.
Example eight:
on the basis of the above embodiments, the embodiments of the present invention take a process of initiating session release by a network side as an example for description.
S1501: the PGW receives an IP-CAN Session Modification (IP-CAN Session Modification) indication of the PCRF that the Session needs to be terminated and initiates a bearer release request to a visited SGW (namely a Roaming GW), and deletes the default bearer of the Session, namely releases the whole Session.
S1502: the Roaming GW releases the core network tunnel resource, calls PDU Session Update Request (PDU Session Update Request) service of vSMF, and requests to delete the Session.
S1503: the vSMF invokes the N1N2MessageTransfer (N1N 2message conversion) 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: the UE returns the session release result.
S1506: the AMF forwards the session release result to the vSMF.
S1507: the vSMF informs the hSMF (namely: Roaming GW) of the session release result of the UE.
S1508: and the Roaming GW converts the N16 signaling into a default bearer deletion response of S15 and sends the default bearer deletion response to the PGW.
Example nine:
an 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 are executable by one or more processors to implement the steps of the method for interworking an NSA network and an SA network in the first embodiment.
The 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 include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk 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 means by which the NSA network and the SA network communicate, the functional modules/units in the means may be implemented as software (which may be implemented as program code executable by a computing means), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between 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 by several physical components in cooperation. 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 over computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media), executed by a computing device, and in some cases may perform the steps shown or described in a different order than here. The term computer storage media includes 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 is well known to those of ordinary skill in the art.
In addition, 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 as known to those skilled in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (12)
1. A method for interworking between an NSA network and an SA network comprises the following steps:
performing 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;
and forwarding the data message corresponding to the signaling on the user plane.
2. The method for interworking between the NSA network and the SA network according to claim 1, wherein before the signaling conversion at the control plane according to the NSA-SA network subscription data mapping table, the method further comprises:
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 group.
3. The method for interworking an NSA network and an SA network of claim 2, wherein said obtaining an NSA network subscription data and a set of 4G authentication vector parameters comprises:
acquiring NSA network subscription data and a 4G authentication vector parameter group from a home subscriber server HLR or a home location register HSS through a Gr/S6d interface or a S6a interface;
the generating of the NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter group includes:
and converting the 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.
4. The method of interworking between an NSA network and an SA network of claim 2, wherein the NSA-to-SA network subscription data mapping table comprises mobility management subscription data, slice selection subscription data, session management function entity, SMF, selection subscription data, and session management subscription data.
5. The method for interworking between the NSA network and the SA network according to claim 1, wherein the performing signaling conversion at a control plane according to the NSA-SA network subscription data mapping table comprises:
registering with a storage function NRF in a home SMF hSMF role, and interacting an N16 message with a visited SMF vSMF;
serving as a serving gateway control plane function (SGW-C), sending or receiving S8-C signaling of a home PDN Gateway (PGW);
the forwarding of the data packet corresponding to the signaling on the user plane includes:
interacting N9 user plane uplink and downlink messages with UPF vUPF of the visit place in the role of UPF hUPF of the home location;
and the SGW-U is used as a service gateway user plane function to send or receive S8-U user plane messages of a home PDN gateway PGW.
6. The method for interworking between the NSA network and the SA network according to claim 5, wherein before the signaling conversion at the control plane according to the NSA-SA network subscription data mapping table, the method further comprises:
allocating and managing user EPS bearing identification EBI;
the access of a Domain Name System (DNS) and the query and selection of a home packet data gateway (PGW).
7. The method for interworking between the NSA network and the SA network according to any of claims 1 to 6, wherein the performing signaling conversion at a control plane according to the NSA-SA network subscription data mapping table further comprises:
and charging when receiving the charging instruction, and executing the charging function.
8. The method for interworking between the NSA network and the SA network according to any of claims 1 to 6, wherein the performing signaling conversion at a control plane according to the NSA-SA network subscription data mapping table further comprises:
and monitoring when receiving the monitoring instruction, and executing a monitoring function.
9. An apparatus for interworking an NSA network and an SA network, the apparatus comprising a first network element;
the first network element is used for performing 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;
and forwarding the data message corresponding to the signaling on the user plane.
10. The apparatus of claim 9, 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 group.
11. The apparatus for interworking an NSA network and an SA network according to claim 9 or 10, wherein when a user moves to a coverage area of only 4G base stations in the SA network, the local serving gateway SGW selects the first network element as PGW access, and the first network element completes proxy PGW operation.
12. A network management system, characterized in that it comprises means of interworking the NSA network with the SA network according to any of claims 9-11, said means being deployed at an international gateway location.
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| CN201911019904.8A CN112714407A (en) | 2019-10-24 | 2019-10-24 | Method, device and network management system for intercommunication between NSA network and SA network |
| PCT/CN2020/123441 WO2021078287A1 (en) | 2019-10-24 | 2020-10-23 | Method and apparatus for interworking nsa network and sa network, and network management system |
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