US 2007/0165561 A1 · Mobile terminated packet data call setup without dormancy

Abstract

When the binding of a mobile station (MS) in a home agent (HA) expires, the HA generates an identifier from the MS's IMSI. The HA maintains a binding between the home address (HoA) and a special care of address (MAP-CoA), where the host ID of MAP-CoA is the identifier, and where the network ID of MAP-CoA is a special code. When a packet destined for the HoA is received at the HA, the HA responds by communicating the MAP-CoA to the PDSN that serves the special code. The PDSN recovers the IMSI from the host ID of the MAP-CoA, and uses the IMSI to page the MS. The MS responds by setting up a call, obtaining a new care of address, and then binding the new care of address with its HoA in the HA. Advantageously, packets can be sent to a dormant MS at its HoA without out-of-band signaling.

Claims24

Dependent claims

A method comprising:

generating an identifier using and encoding method from an identification number of a mobile station in
a mobile IP) system such that the identifier can be decoded by a decoding method to recover the identification number;
and
maintaining a binding in a home agent of the mobile IP system, the binding being between a home address of the mobile station and a care of address of the mobile station, wherein the identifier is a part of the care of address of the mobile station.

1 more element

Dependencies are inferred from the claim text.

Mobile terminated packet data call setup without dormancy

Life of this patent

Mobile terminated packet data call setup without dormancy

Life of this patent

Abstract

Claims24