Packet data web gateway identification saving method and system in multi-access scene

Abstract

The invention discloses a packet data web gateway identification saving method and system in multi-access scene. The method includes that: when user equipment simultaneously accesses a packet data network by two access networks, namely a first access network and a second access network, and the identical packet data network connection is established, an affiliation user or authentication charging server saves the identification of the packet data web network; the first access network is a third generation partner plan 3GPP access network, and the second access network is a non-3GPP access network; or the first access network is a non-3GPP access network, and the second access network is a 3GPP access network; when releasing the access of one access network of the two access networks, the affiliation user or authentication charging server saves the identification of the packet data web gateway. The method can reasonably notify HSS / AAA, P-GW identification can be correctly stored or deleted, and the system is ensured to normally operate in related P-GW identification operation in multi-access scene.

Description

technical field [0001] The present invention relates to the field of communications, and in particular to a method and system for storing a packet data network gateway identifier in a multi-access scenario in an Evolved Packet System (EPS for short). Background technique [0002] The 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP) evolved packet system consists of an Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, referred to as E-UTRAN), a mobility management unit ( Mobility Management Entity, referred to as MME), Serving Gateway (ServingGateway, S-GW), Packet Data Network Gateway (Packet Data Network Gateway, referred to as P-GW or PDN GW), Home Subscriber Server (Home Subscriber Server, referred to as HSS ), 3GPP Authentication, Authorization and Accounting (AAA for short) server, Policy and Charging Rules Function (Policy and Charging Rules Function, PCRF for short) entit...

AI Technical Summary

Problems solved by technology

At a certain moment, if UE disconnects the connection of the access network from the non-3GPP access system, but the connection of the 3GPP access system remains, at this time, the P-GW will send the "P-GW address update" signaling to the HSS / AAA , notify the HSS / AAA to delete the identification information of the P-GW. After the identification of the P-GW is deleted from the HSS / AAA, when the UE establishes the multi-access of the PDN connection again from the non-3GPP access system, or switches to the non-3GPP , the correct P-GW identity cannot be obtained from the HSS / AAA, and the P-GW cannot be guaranteed to remain unchanged, resulting in multi-access / handover failure

[0015] Therefore, the operation of the multi-access scenario is quite different from the existing technology. How to reasonably notify the HSS / AAA and make it correctly store / delete the P-GW identifier to ensure that the subsequent processes can work normally is a prior art. It cannot be realized, and it is also an unavoidable problem to be solved in the multi-access research topic

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