Near-field on-site/trunking system frequency sharing

Details Near-field on-site/trunking system frequency sharing Near-field on-site/trunking system frequency sharing

1990-06-29

1993-05-18

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

H04Q 700

Patent

active

052128059

ABSTRACT:
Shown, herein, is a method of allowing use of small, low-power communication systems within the service coverage area of larger trunked systems. The small, low-power systems are constructed to reuse at least some of the inbound frequencies of communication resources, also used by the larger system. The large system measures signal strength values of large cell communication units and transfers such values to the small systems. A small system also measures the signal strength and compares the measured and transferred values with thresholds and when the thresholds are exceeded, reuses the communication resources under a TDM format within the small system.

REFERENCES:
patent: 4144411 (1979-03-01), Frenkiel
patent: 4932049 (1990-06-01), Lee
patent: 5040238 (1991-08-01), Comroe et al.
patent: 5093925 (1992-03-01), Chanroo

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