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Session binding method, device and system in roaming scene

A technology of scenarios and corresponding relationships, applied in the field of communication, can solve problems such as network security risks in the visited domain

Active Publication Date: 2015-11-25
HUAWEI TECH CO LTD
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  • Description
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Problems solved by technology

[0004] However, in the prior art, when the network node of the visited domain transmits the gateway identifier of the visited domain to the home domain operator through the S9 interface, the home domain operator can bind the gateway of the visited domain involved in the accumulated user history session binding data Identify and obtain the network topology structure of the visited domain, which leads to potential security risks caused by topology exposure of the visited domain network

Method used

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  • Session binding method, device and system in roaming scene
  • Session binding method, device and system in roaming scene
  • Session binding method, device and system in roaming scene

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Embodiment Construction

[0039] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character " / " in this article generally indicates that the contextual objects are an "or" relationship.

[0040] The following will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments.

[0041] In the present invention, because V-NAT is used in the visited domain network where the user is located, after the user terminal roams to the visited domain, it will be assigned a user private network IP address for addressing within the visited do...

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Abstract

Proposed are a session binding method, device and system in a roaming scenario. The method specifically comprises: receiving, by a home network node, a first session message sent by a visited network node, wherein the first session message carries a user identifier; receiving a home second session message, wherein the second session message carries a public network IP address of a user and a private network IP address of the user; according to the public network IP address of the user and the private network IP address of the user which are carried in the second session message, acquiring a user identifier corresponding to a second session from the visited network node; and when the user identifier corresponding to a first session is the same as the user identifier corresponding to the second session, binding the first session and the second session. The present invention realizes that the binding of a visited session and a home session can be effectively completed based on the user identifier without exposing a visited network topology structure.

Description

technical field [0001] The present invention relates to the communication field, and in particular to a method, device and system for binding a home domain session and a visited domain session in a roaming scene. Background technique [0002] In the policy and charging control (Policy and Charging Control, abbreviated as: PCC) architecture of 3GPP, the user roams to the scenario of the visited domain network. When a user initiates a service request in the visited domain network, and the application function entity (ApplicationFunction, abbreviated as: AF) corresponding to the service request is in the user's home domain, that is, the application function entity is specifically a home domain application function Entity H-AF. Wherein, after receiving the service request from the user, the H-AF will send a service guarantee request (the service guarantee request Also described as Rx session message), H-PCRF generates a quality of service (Quality of Service, abbreviated as: Q...

Claims

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Application Information

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IPC IPC(8): H04W8/26H04W76/04
CPCH04W76/02H04W76/10
Inventor 王晓燕夏海涛
Owner HUAWEI TECH CO LTD
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