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EPDG selecting method and device

A technology of location information and IP address, which is applied in the field of ePDG selection to achieve the effect of improving the selection accuracy

Inactive Publication Date: 2017-02-15
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, although the above-mentioned technical solution can reduce the probability of detours in the data transmission process, it needs to open an interface between the terminal and the AAA server to obtain the location information of the terminal's current access network, which adds a terminal to the standard terminal attachment process. The signaling interaction process with the AAA server brings additional signaling overhead and delay

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiments of the present invention are applied to EPC networks and non-3GPP (English: 3 rd Generation Partnership Project, Chinese: Third Generation Partnership Project) network system composed of access network, figure 1 It is a schematic diagram of the intercommunication architecture between the EPC network and the non-3GPP access network in the network system. Non-3GPP access can be divided into trusted non-3GPP (such as ...

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Abstract

The invention relates to the communication technology field and discloses an ePDG selecting method and device, which can improve the ePDG selection accuracy without increasing the external signaling overhead and time delay when a terminal accesses an EPC network via an untrusted WLAN. The method comprises the steps of: receiving a domain name resolution request sent by a terminal, wherein the domain name resolution request carries an initial domain name and access network information of the terminal; searching for location information corresponding to the access network information in a correspondence table, wherein the correspondence table is used to indicate the corresponding relationship between the access network information and the location information; determining an IP address of an ePDG based on the initial domain name and the location information, transmitting the IP address of the ePDG to the terminal, and therefore conveniently selecting the ePDG by the terminal according to the IP address of the ePDG. The ePDG selecting method and device of the present invention are applicable to the process of selecting an ePDG.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for selecting an ePDG. Background technique [0002] With the development of communication technology, EPC (English: Evolved Packet Core, Chinese: Evolved Packet Core) network is widely used. When the terminal accesses the EPC network through a non-trusted WLAN (English: Wireless Local Area Networks, Chinese: wireless local area network), it needs to pass ePDG (English: evolved Packet Data Gateway, Chinese: Evolved Packet Data Gateway) and PDN GW (English : Packet Data Network Gateway, Chinese: Packet Data Network Gateway) to connect to the EPC network. If the ePDG cannot be selected correctly, it may cause the problem of roundabout routing. [0003] At present, in order to avoid routing detours, when a terminal accesses the EPC network through an untrusted WLAN, it can first exchange information with the AAA (English: Authentication Authori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04W48/04H04W48/18H04W64/00H04W84/12
CPCH04W48/04H04W48/18H04W64/00H04W84/12H04L61/4511
Inventor 刘牧寅马瑞涛吕光旭朱斌马泽芳符刚
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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