Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1994-06-22
1999-03-23
Bost, Dwayne D.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455426, 455552, H04Q 722
Patent
active
058872590
ABSTRACT:
A multiple mode, personal, wireless communications system exists within a radiotelephone network serving general customers and provides additional services to a select group of customers. The system uses handsets (32) which automatically switch between a standard cellular radiotelephone mode of operation (1901) and an enhanced cordless mode (1420) when the handsets (32) are within range of pico cells (26) that are interconnected to the public switched telephone network (20). Each pico cell is controlled via a framework of overlay cells (10b) that operates independently of the radiotelephone network and uses a unique control protocol on a small number of reserved cellular channels. Each pico cell consists of a spectrally dynamic, non-capturing, frequency agile, multi-purpose base station (26) provided at customer-selected locations to cooperate with the overlay cell framework. Each pico cell is capable of supporting multiple handsets (32) and using low power operation that achieves limited coverage. Each pico cell reduces traffic on the standard cellular radiotelephone network by independently handling registered handsets (32). An alternate line option module (22) provides wireless local interconnect capability to selectively route call traffic between land lines (24) and the standard cellular radiotelephone network. Service control units (12) and host stations (17) facilitate wireless activation and control of each pico cell and handset (32) via the overlay cell framework.
REFERENCES:
patent: 3970801 (1976-07-01), Ross et al.
patent: 4939766 (1990-07-01), Umemoto et al.
patent: 4996715 (1991-02-01), Marui et al.
patent: 5260988 (1993-11-01), Schellinger et al.
patent: 5373548 (1994-12-01), McCarthy
patent: 5426690 (1995-06-01), Hikuma et al.
Dion John K.
Zicker Robert G.
Bost Dwayne D.
GTE Mobile Communications Service Corporation
Suchyta Leonard Charles
Trost William G.
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