Systems, methods, and devices for increasing radio frequency (RF) power in distributed antenna systems

• US 9,240,835 B2
• Filed: 10/25/2013
• Issued: 01/19/2016
• Est. Priority Date: 04/29/2011
• Status: Active Grant

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Inventors: Berlin, Igor, Cune, William P., Greene, Jason E.
• Primary Examiner(s): SINGH, DALZID E
• Application Number:
  US14/063,245
• Publication Number:
  US 20140050483A1
• Time in Patent Office: 816 Days
• Field of Search: 398/38, 398/115, 398/116
• US Class Current: 1/1
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 10/25753 Distribution optical network, e.g. between a base station and a plurality of remote units
• CPC Class Codes: H04B 10/808 Electrical power feeding of an optical transmission system
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0426 Power distribution
• 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
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A system, and related methods and devices, is disclosed for increasing an output power of a frequency band in a distributed antenna system that includes at least one RXU module that is operatively coupled to at least one RAU module. A first group of the plurality of channels within a first frequency band may be allocated to the RAU module, and a second group of the plurality of the channels within the first frequency band may be allocated to the RXU module. The at least one RAU module may be configured to receive RF signals from the first group of the plurality of channels being used in the first frequency band, and the at least one RXU module may be configured to receive RF signals from the second group of the plurality of channels being used in the first frequency band. In this manner, the amount of composite power per channel is increased.

Claims

1. A distributed antenna system, comprising:

at least one remote antenna unit (RAU) module configured to receive radio frequency (RF) signals from a first group of a plurality of channels being used in a first frequency band supported by the distributed antenna system; and

at least one remote expansion unit (RXU) module operatively coupled to the at least one RAU module and comprising an antenna, the RXU module configured to receive RF signals from a second group of the plurality of channels being used in the first frequency band supported by the distributed antenna system.

2. The distributed antenna system of claim 1, wherein the at least one RAU module comprises at least one optical-to-electrical (O/E) converter configured to convert a downlink optical RF communications signal to a downlink electrical RF communications signal.

3. The distributed antenna system of claim 2, wherein the at least one RAU module further comprises at least one electrical-to-optical (E/O) converter configured to convert an uplink electrical RF communications signal to an uplink optical RF communications signal.

4. The distributed antenna system of claim 1, wherein the at least one RAU module and the at least one RXU module are configured to provide RF communications services.

5. The distributed antenna system of claim 1, wherein the at least one RXU module is configured to receive downlink RF communications signals.

6. The distributed antenna system of claim 5, wherein the at least one RXU module is configured to receive downlink RF communications signals from the at least one RAU module.

7. The distributed antenna system of claim 1, wherein the at least one RXU module is configured to receive uplink RF communications signals.

8. The distributed antenna system of claim 1, wherein at least one of the at least one RAU module and the at least one RXU module further comprises a detector configured to provide a signal indicative of a total power of an RF signal received by the at least one RAU module or the at least one RXU module.

9. The distributed antenna system of claim 1, wherein a plurality of service providers are transmitting RF signals in the first frequency band and the at least one RAU module is further configured to receive RF signals from a first one of the plurality of service providers and the at least one RXU module is further configured to receive RF signals from a second one of the plurality of service providers.

10. The distributed antenna system of claim 1, further comprising a plurality of RAU modules and a plurality of RXU modules, each of the plurality of RXU modules operatively coupled with at least one of the plurality of RAU modules, wherein:

at least one of the plurality of RAU modules is configured to receive RF signals from a first group of a plurality of channels being used in a second frequency band supported by the distributed antenna system; and

at least one of the plurality of RXU modules is configured to receive RF signals from a second group of the plurality of channels being used in the second frequency band supported by the distributed antenna system.

11. The distributed antenna of claim 1, wherein the at least one RXU module further comprises at least one frequency conversion interface.

12. A method of increasing the power of RF signals received from an antenna in a distributed antenna system, comprising:

providing at least one remote antenna unit (RAU) module and at least one remote expansion unit (RXU) module, wherein the RXU module is operatively coupled to at least one RAU module and comprises an antenna;

allocating a first group of a plurality of channels being used in a first frequency band supported by the distributed antenna system to the at least one RAU module; and

allocating a second group of the plurality of the channels being used in the first frequency band to the at least one RXU module.

13. The method of claim 12, further comprising:

transmitting at least a first portion of the RF signals over the first group of the plurality of channels being used in the first frequency band to the at least one RAU module; and

transmitting at least a second portion of the RF signals over the second group of the plurality of channels being used in the first frequency band to the at least one RXU module.

14. The method of claim 12, further comprising receiving a downlink optical RF communications signal at the at least one RAU module and converting the downlink optical RF communications signal to a downlink electrical RF communications signal.

15. The method of claim 12, further comprising receiving an uplink electrical RF communications signal at the at least one RAU module and converting the uplink electrical RF communications signal to an uplink optical RF communications signal.

16. The method of claim 12, further comprising providing RF communications services via at least one of the at least one RAU module and the at least one RXU module.

17. The method of claim 12, further comprising receiving downlink RF communications signals at the at least one RXU module from the at least one RAU module.

18. The method of claim 12, further comprising receiving uplink RF communications signals at the at least one RXU module.

19. The method of claim 12, wherein a plurality of service providers are transmitting RF signals in the first frequency band and the method further comprising:

receiving RF signals at the at least one RAU module from a first one of the plurality of service providers; and

receiving RF signals at the at least one RXU module from a second one of the plurality of service providers.

20. The method of claim 12, further comprising:

receiving RF signals from a first group of a plurality of channels being used in a second frequency band supported by the distributed antenna system at a first one of a plurality of RAU modules; and

receiving RF signals from a second group of a plurality of channels being used in a second frequency band supported by the distributed antenna system at a first one of a plurality of RXU modules.

21. The method of claim 12, further comprising receiving a downlink electrical RF communications signal at the at least one RXU module and converting the frequency of the downlink electrical RF communications signal.