Processing method and system after downlink data tunnel failure between access network and core network

Abstract

The utility model discloses a processing method used when downlink data tunnel between access net and core net is broken, comprising user plane anchors of the core net for receiving data tunnel errorinformation from the user plane of the access net; after confirming that the user corresponding to the error information adopts single tunnel technology, the related core net control surface is informed to recover the downlink data tunnel the access net corresponding to the core net control surface completes wireless access and the recovery, then the user plane anchors of the core net is informedto update the user plane information. The utility model also discloses a processing system used when the downlink data tunnel between the access net and the core net is broken. With the technical proposal, the user plane anchors of the core net does not release corresponding PDP context after the downlink data tunnel is broken, and the core control surface is informed to rebuilt downlink data tunnel, so that the speed of data is increased after downlink data tunnel between the access net and the core net is broken.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a recovery processing method after failure of a user plane downlink data tunnel between an access network and a core network under a single tunnel (One Tunnel / Direct Tunnel) architecture in a third-generation mobile communication system and system. Background technique [0002] With the introduction of High Speed ​​Packet Access (HSPA) and Internet Protocol Multimedia Subsystem (IMS) into the Third Generation Partnership Project (3GPP) network, the user plane data traffic will increase significantly in the next few years. Transmission performance and reduce the operator's network investment, 3GPP organization is studying a network architecture called "One Tunnel" or "Direct Tunnel", which is called "One Tunnel" or "Direct Tunnel". A user plane tunnel is directly established between the gateway general packet radio service support node (GGSN) and the gateway ...

AI Technical Summary

Problems solved by technology

When the RNC releases the user's air interface resources and context due to abnormality, such as reset, the downlink data tunnel between the relevant RNC and GGSN will fail. If the GGSN sends data to the RNC through the downlink data tunnel that has failed, the RNC must Return an error prompt message response, that is, an error indication. According to the current processing mechanism, the GGSN deactivates the packet data protocol (PDP) context at this time, resulting in the release of the entire IP bearer. Subsequent users who want to resume data transmission must reactivate PDP to establish IP. carry

[0005] In the above process, after the downlink data tunnel between RNC and GGSN fails, the user needs to reactivate PDP to establish an IP bearer to resume data transmission, which affects the speed of user recovery data transmission; and is contrary to 3GPP's idea of ​​supporting users to be permanently online ;In addition, since the IP address of the IP bearer established by reactivating the PDP cannot be guaranteed to remain unchanged, the application program will also be interrupted due to the change of the IP address

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