Patent ID: 6904033
Filing Date: 2005-06-07
Classification: H04L,H04W

Abstract:
1. In a cellular telecommunications network, a method for Mobile Internet Protocol (MIP) registration between a Mobile Node (MN) and a Packet Data Serving Node (PDSN), the method comprising the steps of: establishing a Point-to-Point Protocol (PPP) connection between the MN and the PDSN; responsive to the establishment of the PPP connection, starting a PPP timer set to expire after a predetermined period of time; attempting an MIP registration of the MN with the PDSN; detecting if the MIP registration is successful; upon detecting an unsuccessful MIP registration of the MN with the PDSN, keeping alive the PPP connection between the MN and the PDSN until an expiration of the predetermined period of time of the PPP timer; detecting if a new MIP registration request is received by the PDSN from the MN before the expiration of the predetermined period of time; and if a new MIP registration request is received by the PDSN from the MN before the expiration of the predetermined period of time, resetting the PPP timer to the predetermined period of time.