Method to facilitate intersystem packet data hard handoff

Details Method to facilitate intersystem packet data hard handoff Method to facilitate intersystem packet data hard handoff

H - Electricity

04

Q

H04Q 7/38 (2006.01) H04L 12/56 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2297870

A method for facilitating hard handoffs between a serving mobile switching center and a target mobile switching center is provided. The method utilizes mobile identification number/mobile subscriber identity to replace the mobile switching center circuit identification. The invention facilitates intersystem packet data hard handoff by moving the radio resources and packet data resources to the target system. The serving mobile switching center is no longer required after the hard handoff and while the present session is active, the mobile station location is immediately updated in the home location registry. A mobile switching center can perform the role of either initiating or receiving an intersystem packet data hard handoff.

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