Patent ID: 9313094
Filing Date: 2016-04-12
CPC Classification: H04L,H04W,Y02D

Claim Text:
1. A method for providing an indication of a Proxy-Call Session Control Function (P-CSCF) node failure or restart in a Proxy Mobile Internet Protocol (PMIP) based network, the method comprising: determining, by a Local Mobility Anchor (LMA) node, a presence of the P-CSCF node failure or restart; and the LMA node sending, to a Mobile Access Gateway (MAG) node, a communication message, said communication message comprising a flag or cause code, or being of a message type, providing an indication of the P-CSCF node failure or restart in the PMIP based network and further providing an indication to re-establish a PMIP session without releasing a PDN connection.