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Method and system for reestablishing connection of packet data network

A packet data network and access system technology, which is applied in the field of packet systems evolved by the 3rd Generation Partnership Project, can solve problems such as large impact and increase the number of interactions between MME and HSS, and achieve the effect of avoiding errors

Inactive Publication Date: 2010-06-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the main disadvantage of such a processing solution is that the number of interactions between the MME and the HSS is increased, and since the MME needs to interact with the HSS for each PDN connection established by the UE, it has a great impact on related processing in the existing 3GPP system

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  • Method and system for reestablishing connection of packet data network
  • Method and system for reestablishing connection of packet data network
  • Method and system for reestablishing connection of packet data network

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Embodiment Construction

[0036] In the present invention, when the UE undergoes cross-system handover, when the P-GW determines that the UE has established multiple PDN connections for the same APN through the 3GPP access system, it provides the PDN connection established for the corresponding APN to the trusted non-3GPP access system. information, the non-3GPP access system can be trusted to re-establish all PDN connections for the corresponding APN for the UE according to the record of the PDN connection established for the corresponding APN stored by the HSS and the information provided by the P-GW.

[0037] The P-GW can directly provide the information of the PDN connection established by the UE for the same APN to the trusted non-3GPP access system, or provide the information of the PDN connection established by the UE for the same APN to the trusted non-3GPP access system through the AAA server system.

[0038] The information provided by the P-GW on the PDN connections established for the same ...

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Abstract

The invention discloses a method and a system for reestablishing the connection of a packet data network. In the scheme of the invention, when UE is in cross-system switching, a P-GW confirms that the UE establishes a plurality of PDN connections aiming at the same APN by a 3GPP access system and provides a credible non-3GPP access system with the information of the PDN connections established aiming at a corresponding APN; and the credible non-3GPP access system reestablishes all the PDN connections aiming at the corresponding APN for the UE according to the information provided by the P-GW. Accordingly, if the UE establishes a plurality of PDN connections aiming at the same APN when accessing by the 3GPP access system and is switched to the credible non-3GPP access system, the credible non-3GPP access system can reestablish all the PDN connections established aiming at the corresponding APN for the UE without any influence on the correlated processing in the prior 3GPP system on the premise that the exchange number of an MME and an HSS is not increased.

Description

technical field [0001] The present invention relates to a third generation partnership project (3GPP, 3rd Generation Partnership Project) evolved packet system (EPS, Evolved Packet System), in particular to a method and system for rebuilding a packet data network (PDN, Packet Data Network) connection . Background technique [0002] 3GPP EPS consists of Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network), Mobility Management Entity (MME, Mobility Management Entity), Serving Gateway (S-GW, Serving Gateway), packet Data network gateway (P-GW or PDN GW, Packet Data Network Gateway), home subscriber server (HSS, Home Subscriber Server), 3GPP authentication, authorization and accounting (AAA, Authentication, Authorization and Accounting) server, policy and accounting rules Function (PCRF, Policy and Charging Rules Function) entities and other supporting nodes. [0003] Among them, MME is used for mobility management, p...

Claims

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Application Information

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IPC IPC(8): H04W40/36H04L12/56H04W76/02
Inventor 周晓云宗在峰芮通
Owner ZTE CORP