CN111263346B - User plane selection method, system and access control network element - Google Patents
User plane selection method, system and access control network element Download PDFInfo
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- CN111263346B CN111263346B CN201811448119.XA CN201811448119A CN111263346B CN 111263346 B CN111263346 B CN 111263346B CN 201811448119 A CN201811448119 A CN 201811448119A CN 111263346 B CN111263346 B CN 111263346B
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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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- 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
- H04W8/08—Mobility data transfer
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Abstract
The disclosure discloses a user plane selection method, a user plane selection system and an access control network element, and relates to the field of core networks. The access control network element acquires user subscription information, wherein the user subscription information carries home location identification parameters; the home location identification parameter is sent to the gateway control plane so that the gateway control plane selects the user plane according to the home location identification parameter, thereby realizing the routing of the service data flow to the service home network.
Description
Technical Field
The present disclosure relates to the field of core networks, and in particular, to a method, a system, and an access control network element for selecting a user plane.
Background
In a 4G/5G network, a Gateway Control plane (PGW-C (PDN Gateway-Control)/SMF (Session Management Function, session management function entity)) and a User plane (PGW-U (PDN Gateway-User, packet data network Gateway User plane)/UPF (User Port Function )) which are responsible for data stream flows are supported for separate deployment, so that data traffic can be shunted out of the data network from a local User plane, and the problems of large time delay, low speed, poor User experience, serious occupation of transmission resources caused by traffic detouring when the data traffic is provided in an edge area are solved. The gateway control plane may be connected to a plurality of user planes, and the control plane is responsible for selecting which user plane serves the current data flow, where the selection criteria include dynamic load, relative static capacity, location of the user plane and the terminal, capability of the user plane and service requirements of the terminal, APN (Access Point Name )/DNN (Data Network Name, data network name), slicing, etc.
For home location service scenes such as enterprise VPDN and slicing, the service is only deployed in a home location area, the data flow of the service needs to be routed to the home location area of the enterprise network, but the home location is not taken as a judgment basis in the basis of selecting a user plane by a control plane at present. Some current methods in 4G networks are implemented by allocating APNs to home services, where the APNs are used to allocate different values to different types of service networks, the number of enterprises is large, and the APNs are used to identify enterprises, waste APN resources, and do not conform to the location of the APNs.
Disclosure of Invention
The technical problem to be solved by the present disclosure is to provide a user plane selection method, a system and an access control network element, so that a gateway control plane can select a user plane near a service home network according to a home location identification parameter.
According to an aspect of the present disclosure, a user plane selection method is provided, including: the access control network element acquires user subscription information, wherein the user subscription information carries home location identification parameters; the home location identification parameter is sent to the gateway control plane so that the gateway control plane selects the user plane according to the home location identification parameter.
Optionally, the method further comprises: the access control network element acquires a gateway control plane address; and initiating a session establishment request to the gateway control plane based on the gateway control plane address, wherein the session request carries the home location identification parameter.
Optionally, the access control network element is a mobility management entity MME, and the gateway control plane is a packet data network gateway control plane PGW-C; or the access control network element is an access and mobile management function entity AMF, and the gateway control plane is a session management function entity SMF.
Optionally, the user plane routes the traffic data flow to a traffic home network.
According to another aspect of the present disclosure, there is also provided an access control network element, including: the subscription information acquisition unit is used for acquiring the subscription information of the user, wherein the subscription information of the user carries the attribution identification parameter; and the home location identification parameter sending unit is used for sending the home location identification parameter to the gateway control plane so that the gateway control plane can select the user plane according to the home location identification parameter.
Optionally, the home location identifier parameter sending unit is configured to obtain a gateway control plane address, and initiate a session establishment request to the gateway control plane based on the gateway control plane address, where the session request carries the home location identifier parameter.
Optionally, if the access control network element is a mobility management entity MME, the gateway control plane is a packet data network gateway control plane PGW-C; or if the access control network element is an access and mobility management function entity AMF, the gateway control plane is a session management function entity SMF.
According to another aspect of the present disclosure, there is also provided an access control network element, including: a memory; and a processor coupled to the memory, the processor configured to perform a user plane selection method as described above based on instructions stored in the memory.
According to another aspect of the present disclosure, there is also provided a user plane selection system, including: the access control network element; and the gateway control plane network element is used for receiving the home location identification parameter and selecting the user plane according to the home location identification parameter.
According to another aspect of the present disclosure, there is also provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the user plane selection method described above.
Compared with the prior art, the access control network element acquires the attribution identification parameter from the user subscription information and transmits the parameter to the gateway control plane, so that the gateway control plane can select the user plane near the service attribution network according to the attribution identification parameter.
Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a flow chart illustrating an embodiment of a user plane selection method of the present disclosure.
Fig. 2 is a flow chart illustrating another embodiment of a user plane selection method of the present disclosure.
Fig. 3 is a schematic structural diagram of one embodiment of an access control network element of the present disclosure.
Fig. 4 is a schematic structural diagram of still another embodiment of an access control network element of the present disclosure.
Fig. 5 is a schematic structural diagram of another embodiment of an access control network element of the present disclosure.
Fig. 6 is a schematic diagram of an embodiment of a user plane selection system of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
Fig. 1 is a flow chart illustrating an embodiment of a user plane selection method of the present disclosure.
In step 110, the access control network element obtains user subscription information, where the user subscription information carries a home location identification parameter. In the 4G standard, an APN-OI Replacement parameter in the user subscription information may carry a provincial identifier and the like, and may be used to carry service attribution information, when a PDN connection is established, an MME obtains the APN-OI Replacement parameter from an HSS when obtaining the user subscription information, and similarly, in the 5G network, an AMF (Access and Mobility Management Function ) may also obtain similar information from a UDM (Unified Data Management ).
In step 120, the home location identification parameter is sent to the gateway control plane so that the gateway control plane selects the user plane based on the home location identification parameter. The service attribution information is transmitted to the gateway control plane, so that the gateway control plane obtains the service attribution information, and the user plane can be selected according to the service attribution information, so that the user plane can access the service data stream to the service attribution network nearby.
The access control network element acquires a gateway control plane address; and initiating a session establishment request to the gateway control plane based on the gateway control plane address, wherein the session request carries the home location identification parameter.
In this embodiment, the access control network element obtains the home location identifier parameter from the subscriber subscription information, and transmits the parameter to the gateway control plane, so that the gateway control plane can select the user plane near the service home network according to the home location identifier parameter.
In one embodiment of the disclosure, in a 4G network, the access control network element is an MME (Mobility Management Entity ), which sends a location update request to an HSS (Home Subscriber Server ) in order to obtain user subscription information in the HSS. The following describes an example of a 4G network attachment procedure.
Fig. 2 is a flow chart illustrating another embodiment of a user plane selection method of the present disclosure.
In step 210, the terminal UE initiates an attach request, which the base station eNodeB issues to the MME.
In step 220, the mme queries the HSS for user subscription information, and the HSS returns information such as APN-OI registration, PGW-C ID, etc.
In step 230, the mms queries the DNS (Domain Name System ) to obtain the PGW-C address.
In step 240, the mme initiates a "session establishment request" to the SGW/SGW-C, wherein the session establishment request carries PGW-C address, APN, ECGI (E-UTRAN Cell Global Identifier, cell global identifier), etc., and increases the parameters carrying APN-OI registration.
In step 250, the SGW/SGW-C initiates a "establish session request" to the PGW-C, wherein the session request carries APN, ECGI, etc., and increases the carried APN-OI relocation parameter.
In step 260, the PGW-C support selects the PGW-U corresponding to its indication area according to the APN-OI registration.
In step 270, the PGW-C initiates an Sx session setup request to the PGW-U.
In step 280, the PGW-U establishes a data path to the service home.
In this embodiment, a transfer APN-OI update parameter is added to an interface between the MME and the PGW-C, and the PGW-C selects PGW-U according to the parameter, so that the PGW-U can access the service data flow to the service home network.
In another embodiment of the present disclosure, in the 5G network, the access control network element is an AMF, and the AMF sends a registration request to the UDM to obtain the user subscription information in the UDM. Wherein, the service attribution information is carried in the APN-OI Replacement parameter in the 4G network, and the 5G network needs to have similar parameters capable of carrying the service attribution information.
Fig. 3 is a schematic structural diagram of one embodiment of an access control network element of the present disclosure. The access control network element includes a subscription information acquisition unit 310 and a home location identification parameter transmission unit 320.
The subscription information obtaining unit 310 is configured to obtain user subscription information, where the user subscription information carries a home location identification parameter. In the 4G standard, an APN-OI Replacement parameter in the user subscription information may carry a provincial identifier, etc., and may be used to carry service attribution information, when a PDN connection is established, the MME may obtain the APN-OI Replacement parameter when obtaining the user subscription information from the HSS, and similarly, in the 5G network, the AMF may also obtain similar information from the UDM.
The home location identification parameter sending unit 320 is configured to send the home location identification parameter to the gateway control plane, so that the gateway control plane selects the user plane according to the home location identification parameter. The home location identification parameter sending unit is used for obtaining the gateway control plane address, and initiating a session establishment request to the gateway control plane based on the gateway control plane address, wherein the session request carries the home location identification parameter.
In this embodiment, the home location identification parameter is obtained from the subscriber subscription information and transferred to the gateway control plane, so that the gateway control plane can select the user plane near the service home network to solve the real demand and the possible future demand.
In one embodiment of the present disclosure, in a 4G network, the access control network element is an MME, and the MME sends a location update request to the HSS to obtain user subscription information in the HSS. In the 5G network, the access control network element is an AMF, and the AMF sends a registration request to the UDM to obtain the user subscription information in the UDM. Wherein, in the 4G network, the service attribution information is carried in the APN-OI Replacement parameter, and the 5G network also needs to have the parameter similar to the APN-OI Replacement, but the parameter name of the similar parameter in the 5G network is not clear.
Fig. 4 is a schematic structural diagram of still another embodiment of an access control network element of the present disclosure. The access control network element comprises a memory 410 and a processor 420. Wherein: memory 410 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory 410 is used to store instructions in the embodiments corresponding to fig. 1 and 2. Processor 420, coupled to memory 410, may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 420 is configured to execute instructions stored in the memory.
In one embodiment, as also shown in FIG. 5, the apparatus 500 includes a memory 510 and a processor 520. Processor 520 is coupled to memory 510 by BUS 530. The device 500 may also be coupled to external storage 550 via a storage interface 540 for invoking external data, and may also be coupled to a network or another computer system (not shown) via a network interface 560, which will not be described in detail herein.
In this embodiment, the data instruction is stored by the memory, and then the instruction is processed by the processor, so that the gateway control plane can select the user plane near the service home network according to the service home information.
Fig. 6 is a schematic diagram of an embodiment of a user plane selection system of the present disclosure. The user plane selection system includes an access control network element 610 and a gateway control plane network element 620, where the access control network element 610 is an MME in a 4G network system, an AMF in a 5G network system, the gateway control plane network element 620 is a PGW-C in the 4G network system, and an SMF in the 5G network system. The intermediate may pass through a plurality of other network elements during the MME interaction with PGW-C or AMF interaction with SMF.
After acquiring the service attribution information from the user subscription information in the user database, the access control network element 610 adds the parameter in the interface with the gateway control plane network element 620, and transmits the parameter to the gateway control plane, and the gateway control plane supports selecting a user plane according to the service attribution information, i.e. can select a user plane to which the service can be accessed, thereby realizing routing of the service data flow to the service attribution network.
The above-described user plane selection system of the present disclosure may be used to establish or modify related flows such as PDN connections or PDU sessions.
In another embodiment, a computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of the corresponding embodiment of fig. 1, 2. It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (9)
1. A user plane selection method, comprising:
the access control network element obtains user subscription information, wherein the user subscription information carries home location identification parameters;
and sending the home location identification parameter to a gateway control plane so that the gateway control plane can select a user plane nearby the service home network according to the home location identification parameter, wherein the user plane routes the service data flow to the service home network.
2. The user plane selection method of claim 1, further comprising:
the access control network element acquires a gateway control plane address;
and initiating a session establishment request to the gateway control plane based on the gateway control plane address, wherein the session request carries the home identification parameter.
3. The user plane selection method of claim 1, wherein,
the access control network element is a mobility management entity MME, and the gateway control plane is a packet data network gateway control plane PGW-C;
or alternatively
The access control network element is an access and mobile management function entity AMF, and the gateway control plane is a session management function entity SMF.
4. An access control network element, comprising:
the subscription information acquisition unit is used for acquiring the subscription information of the user, wherein the subscription information of the user carries the attribution identification parameter;
and the home location identification parameter sending unit is used for sending the home location identification parameter to a gateway control plane so that the gateway control plane can select a user plane nearby a service home network according to the home location identification parameter, wherein the user plane routes the service data flow to the service home network.
5. The access control network element according to claim 4, wherein,
the home location identification parameter sending unit is used for obtaining a gateway control plane address, and initiating a session establishment request to the gateway control plane based on the gateway control plane address, wherein the session request carries the home location identification parameter.
6. The access control network element according to claim 4, wherein,
if the access control network element is a mobility management entity MME, the gateway control plane is a packet data network gateway control plane PGW-C;
or alternatively
If the access control network element is an access and mobility management function entity AMF, the gateway control plane is a session management function entity SMF.
7. An access control network element, comprising:
a memory; and
coupled to the stored processor, the processor configured to perform the user plane selection method of any one of claims 1 to 3 based on instructions stored in the memory.
8. A user plane selection system comprising:
the access control network element of any of claims 4-7; and
and the gateway control surface network element is used for receiving the home location identification parameter and selecting the user surface according to the home location identification parameter.
9. A computer readable storage medium having stored thereon computer program instructions which when executed by a processor implement the steps of the user plane selection method of any one of claims 1 to 3.
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| CN114339747A (en) * | 2020-09-29 | 2022-04-12 | 中国电信股份有限公司 | Virtual private dial-up network access method, network side system, system and storage medium |
| CN113573375B (en) * | 2021-07-23 | 2022-08-02 | 中国电信股份有限公司 | Fusion gateway selection method and device, storage medium and electronic equipment |
| CN115483961B (en) * | 2022-08-24 | 2023-07-21 | 爱浦路网络技术(南京)有限公司 | Space-borne UPF deployment method, device and medium in space-earth integrated system |
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