Module for selectively providing wireline and wireless call comm

Details Module for selectively providing wireline and wireless call comm Module for selectively providing wireline and wireless call comm

1996-09-27

1998-11-03

Cumming, William

Telecommunications

Radiotelephone system

Special service

455 741, 455552, H04Q 714

Patent

active

058323783

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 uses 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: 4737975 (1988-04-01), Shafer
patent: 4922517 (1990-05-01), West, Jr. et al.
patent: 5046082 (1991-09-01), Zicker et al.
patent: 5404579 (1995-04-01), Obayashi et al.
patent: 5479480 (1995-12-01), Scott
patent: 5526403 (1996-06-01), Tam
patent: 5594779 (1997-01-01), Goodman
patent: 5610970 (1997-03-01), Fuller et al.

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