Patent ID: 6459897
Filing Date: 2002-10-01
Classification: H04W

Abstract:
In a communications system comprising a first wireless network and a second wireless network wherein a mobile station is capable of being coupled to either one of the first and second networks, a method for notifying the mobile station of a communication on the one of the first and second networks to which the station is not presently coupled, the method comprising the steps of:storing a first network address of said mobile station in said first network; storing a second network address of said mobile station in said second network; correlating said first network address with said second network address via a message between said first network and said second network; receiving a communication request on that one of said first and second networks to which said mobile station is not presently coupled; transmitting a communication request trigger from that one of said first and second networks to which said mobile station is not presently coupled to that one of said first and second networks to which said mobile station is presently coupled; transmitting an alert on that one of said first and second networks to which said mobile station is presently coupled using the network address of said first and second network addresses that corresponds to that one of said first and second networks to which said mobile station is presently coupled; wherein said alert indicates that said communication request has been received on that one of said first and second networks to which said mobile station is not presently coupled.