MONITORING NON-SUPPORTED WIRELESS SPECTRUM WITHIN COVERAGE AREAS OF DISTRIBUTED ANTENNA SYSTEMS (DASs)

• US 20150031316A1
• Filed: 07/23/2013
• Published: 01/29/2015
• Est. Priority Date: 07/23/2013
• Status: Active Grant

• Current Assignee: Corning Optical Communications LLC (Corning Incorporated)
• Original Assignee: Corning Mobileaccess Ltd.
• Inventors: Berlin, Igor, Reuven, Rami, Daniel, Liav Moshe, Henia, Yoni, Yakobi, Motti
• Granted Patent: US 9,247,543 B2
• Time in Patent Office: Days
• US Class Current: 455/84
• CPC Class Codes: H04B 10/25753 Distribution optical network, e.g. between a base station and a plurality of remote units
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

Monitoring non-supported wireless spectrum within a coverage area of a distributed antenna system (DAS) in which a listening module connected to a remote unit of the DAS monitors non-supported wireless frequencies (i.e., frequencies that are outside the frequency ranges supported by the downlink and uplink signals of the DAS), via one or more antennas. The listening module also transmits the wireless frequencies to a monitoring module connected to head end equipment (HEE) of the DAS. In that manner, a monitoring module can use an existing DAS infrastructure to monitor non-supported portions of the wireless spectrum at remote locations. In addition to avoiding the need to run a parallel DAS infrastructure, the disclosed arrangements are also useful in shared spectrum environments and other environments where efficient spectrum utilization is desired.

Claims

1. An apparatus connected to at least one of a plurality of remote units of a distributed antenna system (DAS) for monitoring non-supported wireless spectrum within a coverage area of the DAS comprising:

at least one antenna configured to receive one or more electromagnetic signals;

a listening module connected to the at least one antenna comprising;

at least one input configured to receive the electromagnetic signals from the at least one antenna;

at least one output configured to transmit the electromagnetic signals over at least one uplink path of the DAS to head end equipment (HEE) of the DAS; and

at least one listening path disposed between the at least one input and the at least one output and configured to pass a non-supported radio band different than a supported radio band of the DAS to the at least one output.

2. The apparatus of claim 1, wherein the at least one antenna is an antenna connected to at least one remote unit of a plurality of remote units of the DAS.

3. The apparatus of claim 2, wherein the at least one listening path is further configured to pass at least one supported radio band to the at least one output.

4. The apparatus of claim 1, wherein the at least one listening path is further configured to prevent a radio band that includes the supported radio band of the DAS from being passed to the at least one output.

5. The apparatus of claim 1, wherein the at least one antenna is at least one broadband antenna connected to at least one remote unit of the plurality of remote unites of the DAS and configured to be used by the at least one remote unit for at least one of transmitting and receiving electromagnetic signals in the supported radio band.

6. The apparatus of claim 5, wherein the plurality of remote units are distributed throughout a building infrastructure having a plurality of floors such that each of the plurality of floors has at least one remote unit;

and

the HEE is optically connected to each of the plurality of remote units via a fiber optic infrastructure.

7. The apparatus of claim 1, wherein the listening module is a component of at least one remote unit of the DAS.

8. The apparatus of claim 1, wherein the listening module is a component of a listening unit connected to at least one remote unit of the plurality of remote units of the DAS.

9. A system for monitoring non-supported wireless spectrum within a coverage area of a distributed antenna system (DAS) having head-end equipment (HEE) and a plurality of remote units, comprising:

a plurality of antennas configured to receive one or more electromagnetic signals;

a listening module connected to at least one of the plurality of remote units connected to at least one of the plurality of antennas comprising;

at least one input configured to receive the electromagnetic signals from the at least one antenna;

at least one output configured to transmit the electromagnetic signals over at least one uplink path of the DAS; and

at least one listening path disposed between the at least one input and the at least one output and configured to pass a non-supported radio band different than a supported radio band of the DAS to the at least one output; and

a monitoring module connected to the HEE comprising;

at least one input configured to receive the non supported radio band passed by the at least one listening path of the listening module.

10. The system of claim 9, wherein the at least one antenna is an antenna connected to the at least one remote unit.

11. The system of claim 10, wherein the at least one listening path is further configured to pass at least one supported radio band to the at least one output.

12. The system of claim 9, wherein the at least one listening path is further configured to prevent a radio band that includes the supported radio band of the DAS from being passed to the at least one output.

13. The system of claim 9, wherein the at least one antenna is at least one broadband antenna connected to the at least one remote unit and is further configured to be used by the at least one remote unit for at least one of transmitting and receiving electromagnetic signals in the supported radio band of the DAS.

14. The system of claim 13, wherein the plurality of remote units are distributed throughout a building infrastructure having a plurality of floors such that each of the plurality of floors has at least one remote unit;

and

the HEE is optically connected to each of the plurality of remote units via a fiber optic infrastructure.

15. The system of claim 9, wherein the listening module is a component of the at least one remote unit.

16. The system of claim 9, wherein the listening module is a component of a listening unit connected to the at least one remote unit.

17. The system of claim 9, wherein the monitoring module is a component of the HEE.

18. The system of claim 9, wherein the monitoring module is a component of a monitoring unit connected to the HEE.

19. The system of claim 9, wherein the HEE comprises at least one optical interface module (OIM) and the at least one input of the monitoring module is further configured to receive the non supported radio band passed by the at least one listening path of the listening module from the at least one OIM.

20. The system of claim 9, wherein the HEE comprises at least one remote interface module (RIM) and the at least one input of the monitoring module is further configured to receive the non supported radio band passed by the at least one listening path of the listening module from the at least one RIM.

21. A method of monitoring non-supported wireless spectrum within a coverage area of a distributed antenna system (DAS) comprising:

receiving, at a plurality of antennas, one or more electromagnetic signals;

receiving, at a listening module connected to at least one of a plurality of remote units of the DAS, the one or more electromagnetic signals from at least one of the plurality of antennas; and

passing the one or more electromagnetic signals in a non-supported radio band different than a supported radio band of the DAS to an output of the listening module.

22. The method of claim 21, further comprising:

transmitting the non-supported radio band from the output of the listening module over a communications medium of the DAS;

receiving, at at least one monitoring module connected to head-end equipment (HEE) of the DAS, the non-supported radio band via the communications medium of the DAS.

23. The method of claim 22, wherein the plurality of remote units are distributed throughout a building infrastructure having a plurality of floors such that each of the plurality of floors has at least one remote unit;

and

the HEE is optically connected to each of the plurality of remote units via a fiber optic infrastructure.