Title: Mobile radio extension unit with punch through operation

Abstract: A mobile radio extension unit for converting a conventional mobile transceiver having a transmitter and a receiver to use as a repeater or transponder for establishing a bidirectional communications link between a transceiver of limited range and a base station or other mobile transceivers in the network. In a mobile communications system network having a plurality of extension units, associated mobile radios, and limited range transceivers, each extension unit includes means for automatically inhibiting multiple transmissions by units within range of one another and for providing punch through priority communications from a limited range transceiver to the base station or other mobile transceivers via one selected extension unit when the receiver associated therewith is repeating a communication to the transceiver.

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Inventors: Stephens, Berton H. (Los Altos, CA, US)
Bradley, Jack (Cupertino, CA, US)

Application Number: 579166
Filing Date: 1975-05-20
Publication_date: 1976-05-04
Assignee: Public Systems, Inc. (Sunnyvale, CA)
Primary Class(es): 455/11.1 455/21, 455/68, 455/528
Other Classes:
US Patent Ref:

2731622	Jan, 1956	Doremus et al.	325/57.
2932729	Apr, 1960	Yamato et al.	325/57.
2987615	Jun, 1961	Dimmer	325/57.
3366880	Jan, 1968	Driver	325/22.
3387212	Jun, 1968	Kaufman	325/57.
3745462	Jul, 1973	Trimble	325/4.

Other Refs:
Primary Examiner: Griffin, Robert L.
Assistant Examiner: Ng, Jin F.
Attorney: Townsend and Townsend