Patent ID: 8787226
Filing Date: 2014-07-22
Classification: H04L,H04W

Abstract:
1. A method for handling node failure, comprising: detecting, by a serving gateway (SGW), that a packet data gateway (PGW) has restarted; obtaining, by the SGW, a first match word, according to a packet data network connection set identifier (CSID) mask of the PGW and a CSID of the PGW in context information associated with the PGW stored in the SGW; sending, by the SGW a context processing request message carrying the CSID mask of the PGW, the first match word, an internet protocol (IP) address of the PGW and an IP address of the SGW, to a mobility management entity (MME); wherein the MME obtains a second match word, according to the CSID mask of the PGW and a CSID of the PGW in context information corresponding to the IP address of the PGW and the IP address of the SGW stored in the MME, and the MME deletes context information when the first match word matches the second match word in the MME.