Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-03-07
2006-03-07
Appiah, Charles (Department: 2686)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S436000, C455S428000, C370S331000
Reexamination Certificate
active
07010301
ABSTRACT:
An apparatus, method and system are provided for hand-off of a communication session utilizing ISDN multiway capabilities, in which the communication session of a mobile unit on a first call path is transferred from a serving base station to a target base station. The preferred system includes a switch coupled to a serving base station and a target base station, wherein the serving base station includes instructions to request a second call path to the target base station and to request a multiway feature. The switch then establishes the second call path from the serving base station to the target base station via the switch, and combines the communication session of the first call path with the second call path to form a multiway communication session. The mobile unit then communicates with the target base station for continuation of the communication session through a first leg of the multiway communication session, and the serving base station is released from a second leg of the multiway communication session, completing the hand-off.
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Foster Eugene William
Tomasko-Dean Kimberly Sue
Appiah Charles
Lucent Technologies - Inc.
Ly Nghi H.
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