PRESENCE DETECTION AND HANDOFF FOR CELLULAR AND INTERNET PROTOCOL TELEPHONY
摘要
A telephone system supports communication with user devices over both a cellular radio network as well as over an Internet Protocol (IP) network, and enables roaming and active call handoff between cellular and IP domains. Approaches to detecting presence of a user near a suitable IP network are used in controlling transitions between the domains, for example, enabling automatic transitions between domains, and delivery of calls to a mobile user to data network devices in the vicinity of the user.
申请公布号
CA2574052(A1)
申请公布日期
2006.02.23
申请号
CA20052574052
申请日期
2005.07.18
申请人
BRIDGEPORT NETWORKS, INC.
发明人
SINGH, INDERPREET;BOGDANOVIC, IVAN DEAN;FRETER, KARL E.;O'BRIEN, JAMES D.;JHAWAR, SANJAY S.;BLUMENTHAL, STEVEN H.;WILHOITE, MICHAEL T.;ABORN, JUSTIN A.;VERTEUIL, ANDRE DE;WIATRAK, BRUCE M.;SAMUELSSON, MATS A.