Patent ID: 9094857
Filing Date: 2015-07-28
Classification: H04L,H04W

Abstract:
1. A communication system for handling node failure, comprising: a serving gateway (SGW) that detects a mobility management entity (MME) failure, obtains a first match word according to a packet data network connection set identifier (CSID) of the MME stored on the SGW and a CSID mask of the MME, and sends a context processing request that comprises an identifier of the SGW, an identifier of the MME, and the CSID mask of the MME and the first match word; and a packet data network gateway (PGW) that receives the context processing request, identifies context information stored on the PGW by the identifier of the MME and the identifier of the SGW carried in the context processing request, obtains a second match word according to the CSID mask of the MME carried in the context processing request and a CSID of the MME in the context information stored on the PGW, wherein upon the PGW detects the first match word is the same as the second match word, the PGW deletes the context information stored on the PGW.