Repeater system for extended cell coverage

• US 9,002,260 B2
• Filed: 12/13/2007
• Issued: 04/07/2015
• Est. Priority Date: 05/22/2007
• Status: Active Grant

• Current Assignee: Telstra Corporation Limited (Telstra Group Ltd.)
• Original Assignee: Telstra Corporation Limited (Telstra Group Ltd.)
• Inventors: Martin, Andrew C.
• Primary Examiner(s): Nguyen, Hai V
• Application Number:
  US12/601,076
• Publication Number:
  US 20110117834A1
• Time in Patent Office: 2,672 Days
• Field of Search: 455/7
• US Class Current: 455/7
• CPC Class Codes: H04B 7/15507 Relay station based processing for cell extension or control of coverage area, network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow

Abstract

A repeater system for extending cell coverage, including a frequency band translation repeater for transmitting radio frequency (RF) signals to and receiving RF signals from a base station and translating between the frequency band of THE RF signals and a different frequency band for RF transmission directly between the repeater and user equipment.

Claims

1. A repeater system for extending cell coverage, comprising:

a standard base station of a Universal Mobile Telecommunications System (UMTS) based network operating on a first frequency band;

a base station antenna wirelessly transmitting and receiving radio frequency (RF) signals directly from and to said standard base station of said UMTS based network;

a repeater, including;

a donor port connected to said base station antenna, said donor port being for said first frequency band of said base station and of said network;

a service port for a different second frequency band of said network, the different second frequency band including a carrier frequency for direct communication with standard user equipment of said network; and

a repeater circuit translating said RF signals on the donor port and the service port between the first frequency band of said RF signals and said different second frequency band for wireless RF transmission directly between the repeater and said standard user equipment; and

said user equipment which scans all UMTS operating bands to locate said RF signals of the second frequency band and register with said network,

wherein said first frequency band and said second frequency band are frequencies of a single UMTS based network and wherein the coverage of said network for said standard user equipment of said network is extended by the repeater system.

2. A repeater system as claimed in claim 1, wherein the system extends an area of said cell coverage of said base station to another area.

3. A repeater system as claimed in claim 2, including another of said repeater configured to transmit and receive said RF signals at said different second frequency band and to translate between said different second frequency band and another frequency band of said network for RF transmission directly between said another of said repeater and user equipment of said network.

4. A repeater system as claimed in claim 3, wherein said another frequency band is the frequency band of said base station.

5. A repeater system as claimed in claim 2, wherein the repeater circuit includes a downlink circuit for translation from the first band to the second band, and an uplink circuit for translation from the second band to the first band.

6. A repeater system as claimed in claim 1, wherein the system provides coverage at said different second frequency band within an area of said cell coverage of said base station.

7. A repeater system as claimed in claim 6, wherein said coverage at said different second frequency band is for said user equipment which does not operate at said first frequency band of said base station.

8. A repeater system as claimed in claim 7, wherein the repeater circuit includes a downlink circuit for translation from the first band to the second band, and an uplink circuit for translation from the second band to the first band.

9. A repeater system as claimed in claim 6, wherein the repeater circuit includes a downlink circuit for translation from the first band to the second band, and an uplink circuit for translation from the second band to the first band.

10. A repeater system as claimed in claim 1, wherein the repeater circuit includes a downlink circuit for translation from the first band to the second band, and an uplink circuit for translation from the second band to the first band.

11. A repeater system as claimed in claim 10, wherein the downlink circuit and the uplink circuit include a gain amplifier controlled based on a power level of the common pilot channel of signals received on the donor port and the service port, respectively.