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Method and system for accessing to mobile core network through trusted fixed network

A mobile core and mobile network technology, applied in the field of mobile communications, can solve problems such as UE being unable to access mobile operator services, unable to trigger the core network to allocate IP addresses, etc.

Inactive Publication Date: 2012-10-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a method and system for accessing the mobile core network through a trusted fixed network, which is used to solve the problem that the existing message mechanism UE cannot trigger when the fixed network is a trusted non-3GPP network. The core network assigns an IP address to it, resulting in a technical problem that the UE cannot access the services provided by the mobile operator

Method used

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  • Method and system for accessing to mobile core network through trusted fixed network
  • Method and system for accessing to mobile core network through trusted fixed network
  • Method and system for accessing to mobile core network through trusted fixed network

Examples

Experimental program
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Embodiment 1

[0041] This process is when RG is in routing mode and WLAN is a trusted non-3GPP network. The mobile terminal UE accesses the mobile core network through the S2a interface. Wherein, the fixed network and the mobile network assign one IP address to the UE respectively, and store two IP addresses in the UE. The DHCP protocol is adopted between the RG and the BNG / BRAS to solve the problem that the IP address allocated by the mobile network to the terminal UE cannot be forwarded between the RG and the BNG / BRAS. Such as image 3 shown, including:

[0042] Step 301: A point-to-point protocol (Point to Point Protocol, PPP) negotiation and authentication process is performed between the RG and the BNG / BRAS. During the PPP negotiation process, the BNG / BRAS assigns a local IP address to the RG, that is, the CPE IP.

[0043] Step 302: A DHCP negotiation process is performed between the UE and the RG. During the DHCP negotiation process, the RG assigns an IP address to the UE, generall...

Embodiment 2

[0068] This process is when RG is in routing mode and WLAN is a trusted non-3GPP network. The mobile terminal UE accesses the mobile core network through the S2a interface. Wherein, the fixed network and the mobile network assign one IP address to the UE respectively, and store two IP addresses in the UE. The difference from Embodiment 1 is that the PMIP protocol is used between the RG and the BNG / BRAS to solve the problem that the IP address assigned by the mobile network to the terminal UE cannot be forwarded between the RG and the BNG / BRAS. Such as Figure 4 shown, including:

[0069] Step 401: The PPP negotiation and authentication process is carried out between the RG and the BNG / BRAS. During the PPP negotiation process, the BNG / BRAS assigns a local IP address to the RG, that is, the CPE IP.

[0070] Step 402: A DHCP negotiation process is performed between the UE and the RG. During the DHCP negotiation process, the RG assigns an IP address to the UE, generally a priva...

Embodiment 3

[0094] This process is similar to Embodiment 1, the main difference is that the address obtained by the UE is an IP address, for example: it is allocated by the mobile network or by the fixed network, such as Figure 5 shown, including:

[0095] Step 501: The PPP negotiation and authentication process is performed between the RG and the BNG / BRAS. During the PPP negotiation process, the BNG / BRAS assigns a local IP address, namely the CPE IP, to the RG.

[0096] Step 502: If the UE is a mobile terminal, perform PPP LCP negotiation with the RG.

[0097] Step 503: After receiving the PPP LCP request message from the UE, the RG, as the authenticator, will initiate a PPP EAP authentication request message to the UE; in the EAP authentication process, the RG can identify the UE as a mobile terminal user, and complete the authentication of the UE to the 3GPP server (For example: AAA Server) EAP authentication process.

[0098] Step 504: After BNG / BRAS receives the EAP authentication...

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Abstract

The invention discloses a method and a system for accessing to a mobile core network through a trusted fixed network. The method and the system are used to solve a technical problem that user equipment (UE) can not access business provided by a mobile operator caused by the fact that the UE can not trigger the mobile core network to assign IP addresses for the UE. In the method, after interaction of existing messages between the mobile UE and the fixed network, a routing gateway (RG) sends messages to broadband network gateway / broadband remote access server (BNG / BRAS), to trigger the message interaction between the fixed network and the mobile core network and request the mobile core network to assign IP addresses for the UE. And then the RG obtains the IP addresses, and provides the IP addresses to the UE after corresponding processing of IP address mapping relationships. The UE using the IP addresses provided by the RG accesses the business through the mobile network or directly through the fixed network. The method and the system enhance the messages between the UE and network elements of the fixed network (including the RG and the BNG / BRAS), so that the UE can access the mobile core network through a trusted WLAN network and access the business provided by the mobile network.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and a system for a mobile terminal to access a mobile core network through a trusted fixed network and access services provided by a mobile operator or a fixed network operator. Background technique [0002] The Evolved Packet System (EPS) of the 3rd Generation Partnership Project (3GPP) consists of the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), Mobility Management Unit (Mobility Management Entity, MME), Serving Gateway (Serving Gateway, S-GW), Packet Data Network Gateway (Packet Data Network Gateway, P-GW) and Home Subscriber Server (Home Subscriber Server, HSS). [0003] EPS supports intercommunication with non-3GPP systems, wherein intercommunication with non-3GPP systems is realized through S2a / b / c interfaces, and P-GW serves as the anchor point between 3GPP and non-3GPP systems. In the EPS system architecture diagram, non-3GPP system a...

Claims

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Application Information

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IPC IPC(8): H04W48/08H04W48/16
CPCH04L61/2038H04W92/06H04W80/04H04W8/26H04W60/00H04L61/5038
Inventor 刘国燕毕以峰宗在峰周晓云霍玉臻
Owner ZTE CORP
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