Multi-repeater communication system

• US 6,032,020 A
• Filed: 07/28/1997
• Issued: 02/29/2000
• Est. Priority Date: 07/28/1997
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Gilray, Carl Robert, Cook, Dean Lawrence, Corman, David Warren
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): NGUYEN, DUC M
• Application Number:
  US08/901,523
• Time in Patent Office: 946 Days
• Field of Search: 455/11.1, 455/7, 455/103, 455/523, 455/15, 455/16, 455/132, 455/272, 455/17
• US Class Current: 455/7
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels

Abstract

A structure (24) includes a plurality of repeaters (34), each having a primary transceiver (36) and a secondary transceiver (38) electromagnetically located upon a clear side (30) and a blocked side (32), respectively, of a barrier (26). Each primary transceiver (36) and secondary transceiver (38) communicate using an intra-repeater signal (46). Each intra-repeater signal (46) is output from its respective primary transceiver (36), combined with other intra-repeater signals (46) by a combiner (50), passed over a communication infrastructure (22), separated from other intra-repeater signals (46) by a separator (54), and input to its respective secondary transceiver (38). Optionally, each intra-repeater signal (46) may be retrieved from the communication infrastructure (22), separated from other intra-repeater signals (46) by a separator (62), amplified by a bandpass amplifier (64), combined with other intra-repeater signals (46) by a combiner (66), and inserted back into the communication infrastructure (22).

Claims

1. A multi-band communication repeater system comprising:

a communication infrastructure configured to be a fixture of a building;

a plurality of repeaters, wherein each one of said repeaters has a primary transceiver, comprising at least one antenna located outside said building and a secondary transceiver, comprising at least one antenna located inside said building, and each one of said repeaters is configured to utilize an intra-repeater signal to communicate between said primary transceiver and said secondary transceiver via said communication infrastructure, wherein a first repeater is configured to utilize a first intra-repeater signal which is an AMPS (Advanced Mobile Phone System) signal, a second repeater is configured to utilize a second intra-repeater signal which is a PCS (Personal Communications System) signal, and a third repeater is configured to utilize a third intra-repeater signal which is a paging signal, said intra-repeater signals coexisting as different signal sets occupying different RF frequency bands;

a combiner coupled between said primary transceiver and said communication infrastructure, said combiner being configured to combine said first intra-repeater signal, said second intra-repeater signal, and said third intra-repeater signal into a combined intra-repeater signal;

a separator coupled between said communication infrastructure and said secondary transceiver, said separator being configured to separate said combined intra-repeater signal into said first intra-repeater signal, said second intra-repeater signal, and said third intra-repeater signal; and

a multi-band amplifier coupled between said combiner and said communication infrastructure, said multi-band amplifier comprising;

a second separator configured to separate said combined intra-repeater signal into separated intra-repeater signals,

a plurality of bandpass amplifiers configured to amplify said separated intra-repeater signals, and

a second combiner configured to combine said amplified intra-repeater signals.

2. A system as claimed in claim 1 wherein one of said bandpass amplifiers is a bidirectional bandpass amplifier.

3. A system as claimed in claim 1 wherein said bandpass amplifiers are configured to pass different frequency bands.

4. A method of using a common communication infrastructure within a building to support a plurality of repeaters, said method comprising the steps of:

configuring first and second ones of said plurality of repeaters to have first and second primary transceivers, respectively, and first and second secondary transceivers, respectively, and to use first and second intra-repeater signals for communication between said first primary and secondary and said second primary and secondary transceivers, respectively, wherein said first intra-repeater signals are AMPS (Advanced Mobile Phone System) signals, and said second intra-repeater signals are PCS (Personal Communications System) signals;

combining said first and second intra-repeater signals from said first and second primary transceivers, respectively;

inserting said combined first and second intra-repeater signals into said communication infrastructure;

retrieving said inserted first and second intra-repeater signals from said communication infrastructure;

separating said retrieved first and second intra-repeater signals;

amplifying said separated first and second intra-repeater signals in a multi-band amplifier;

combining said amplified first and second intra-repeater signals;

inserting said combined amplified signals into said communication infrastructure;

retrieving said combined amplified signals from said communication infrastructure;

separating said amplified first and second intra-repeater signals from combined amplified signals; and

routing said amplified first and second intra-repeater signals to said first and second secondary transceivers, respectively.

5. A method as claimed in claim 4 wherein:

said building has a barrier which substantially attenuates electromagnetic radiation, said barrier having a clear side and a blocked side; and

said method additionally comprises the step of installing said communication infrastructure to become a fixture of said building.

6. A method as claimed in claim 5 additionally comprising the steps of:

electromagnetically locating said first and second primary transceivers upon said clear side of said barrier; and

electromagnetically locating said first and second secondary transceivers upon said blocked side of said barrier.

7. A method as claimed in claim 4 wherein said amplifying step independently amplifies said separated first and second intra-repeater signals.