Patent ID: 9130965
Filing Date: 2015-09-08
Classification: H04L,H04W

Abstract:
1. A method implemented in a first mobile unit that supports multiple application layer clients that operate according to multiple wireless access technologies in a packet-switched communication system, comprising: establishing a call from a first application layer client in the first mobile unit using a first wireless communication link that operates according to a first wireless access technology; sending, in response to detecting changing conditions of the first wireless communication link, a request to form a conference call including the first application layer client; joining a second application layer client in the first mobile unit to the conference call, the second application layer client using a second wireless communication link that operates according to a second wireless access technology different from the first wireless access technology, wherein packets received by the second application layer client are dropped or ignored prior to handing off the call from the first application layer client to the second application layer client; and handing off the call from the first application layer client to the second application layer client, wherein packets received by the first application layer client are dropped or ignored subsequent to handing off the call.