Adaptive digital wireless communications network apparatus and p

Details Adaptive digital wireless communications network apparatus and p Adaptive digital wireless communications network apparatus and p

1995-05-19

2000-08-01

Safourek, Benedict V.

Multiplex communications

Communication over free space

Repeater

370337, 370347, 455 541, 455 571, H04J 316

Patent

active

060977078

ABSTRACT:
A single channel wireless digital communication network [10] has a cellular topology which includes a central unit [12] ("CW") controlling communications with a plurality of remote units [14] ("TU") in a star configuration. Network access is synchronously controlled through a time division multiplexed cycle [20] of variable total duration having an up-link phase [21] of a variable number of fixed size time slots [25, 27, 27a], each pre-assigned by reservation by a remote unit, and a down-link phase [22] of a variable number of variable size slots [31a, 31b] which are adaptively utilized. The CU adaptively manages all slot assignments according to a variety of parameters. RU up-link slot reservations are confirmed by the CU in a variety of ways. During the up-link phase, RU's which did not reserve a slot on the previous up-link cycle are temporarily suspended and are then polled or periodically tested for re-entry. A repeater unit [15] ("RU") having a back-to-back coupled ccu-tu pair operates as a minicell within the major cell where major cell coverage is not broad enough to reach all major cell TU's.

REFERENCES:
patent: 4644534 (1987-02-01), Sperlich
patent: 5129096 (1992-07-01), Burns
patent: 5212805 (1993-05-01), Comroe et al.
patent: 5276686 (1994-01-01), Ito

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