Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-04-29
1999-12-14
Vo, Nguyen
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455524, H04Q 720
Patent
active
060029331
ABSTRACT:
A method and apparatus for operating a cellular telephone system that supports performing an inter-system soft handoff is described. A subscriber unit generates a pilot strength measurement report when the pilot channel from a base station is detected. When a base station controller receiving the pilot strength measurement report determines that the base station is part of a second cellular telephone system, a inter-system soft handoff request is generated. An admission control subsystem receives the inter-system soft handoff and either grants or denies the request base on the traffic level with the second cellular telephone system. In a preferred embodiment of the invention, the traffic level is determined based on link load messages received periodically by the admission control subsystem that are generated by an interface port coupled to an interconnect between the first cellular telephone system and the second cellular telephone system. The link load message include peak queue length and average frame rate information.
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Bender Paul E.
Holcman Toni L.
Karmi Gadi
Lee Kuo-Chun
Lueder Suzanne M.
Appiah Charles N.
Edmonston Brian S.
Martin Roger W.
Miller Russell B.
Qualcomm Incorporated
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