Telecommunications – Transmitter and receiver at separate stations
Patent
1987-09-16
1989-10-24
Griffin, Robert L.
Telecommunications
Transmitter and receiver at separate stations
455 54, 455 56, 379 59, 379 60, H04B 100, H04Q 700
Patent
active
048767387
ABSTRACT:
A mobile radio tarnsmission system comprises a plurality of base stations (BS) with corresponding service areas (SA) which together cover a geographical area through which mobile stations (M) can roam. Each base station is connected to a central station (CS) by means of a respective two-way communication link (CL). In order that it can be contacted without all the base stations having to put out a call, each mobile station registers in known manner with the base station in whose service area it is situated, and this is recorded by the control station. When it roams into a new service area this process is repeated. However, in order to preclude frequent re-registrations when the mobile station repeatedly crosses the boundary between two service areas, when it registers with a new base station and hence a new service area it retains its registration with at least one service area with which it is already registered, thereby creating its own customized enlarged registration area. Thus the transmission overhead created by the registration procedure is reduced.
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patent: 4398289 (1983-08-01), Schoute
patent: 4644351 (1987-02-01), Zabarsky et al.
patent: 4654879 (1987-03-01), Goldman et al.
patent: 4696027 (1987-09-01), Bonta
patent: 4698839 (1987-10-01), DeVaney et al.
"UK Trunking System Signalling Standard-Protocol Aspects"; Journal of the IERE; May/Jun. 1987; Mabey et al.; pp. 119-124.
Griffin Robert L.
Smith Ralph E.
Treacy David R.
U.S. Philips Corporation
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