Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-03-06
1998-05-19
Eisenzopf, Reinhard J.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455439, 455442, 370331, 380 9, 380 48, H04Q 738
Patent
active
057549575
ABSTRACT:
A method of implementing an improved automatic link transfer for high mobility use in a wireless personal communication system is provided. The method includes retuning a subscriber unit to a new radio port frequency, reading an access message and initiating encrypted voice transmission from the subscriber unit, based on the access message, before receiving an acknowledgement from a radio port controller. A data structure for an access rights message is provided including a frame counter variable to allow for expedited processing of an automatic link transfer. A data structure for an automatic link transfer request message is provided that permits faster determination of the type of automatic link transfer necessary.
REFERENCES:
patent: 5081679 (1992-01-01), Dent
patent: 5293423 (1994-03-01), Dahlin et al.
patent: 5371738 (1994-12-01), Moelard et al.
patent: 5553027 (1996-09-01), Akerberg et al.
Eisenzopf Reinhard J.
Hughes Electronics Corporation
Nguyen Lee
Sales Michael
Whelan John T.
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