System and method for detecting and measuring uplink traffic in signal repeating systems

• US 9,444,562 B2
• Filed: 02/14/2014
• Issued: 09/13/2016
• Est. Priority Date: 05/12/2010
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Kummetz, Thomas
• Primary Examiner(s): GESESSE, TILAHUN
• Application Number:
  US14/181,049
• Publication Number:
  US 20140162547A1
• Time in Patent Office: 942 Days
• Field of Search: 455/7, 455/11.1, 455/15, 455/16, 455/9
• US Class Current: 1/1
• CPC Class Codes: H04B 17/40 of relay systems
• CPC Class Codes: H04B 7/15535 Control of relay amplifier gain amplifier gain control in general H03G3/00; gain control reducing self - or loop interference H04B7/15578
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic

Abstract

A signal repeating system for a wireless network includes signal repeating circuitry defining an uplink path for processing signals repeated between endpoints. The signal repeating circuitry includes circuitry for selectively varying at least one parameter of the signals that are processed in the uplink path. Circuitry evaluates how signals received in the uplink path of the signal repeating system respond to the variation of the signal parameter. Processing circuitry is configured for comparing a signal associated with the variation of the signal parameter with the evaluated response to determine if the variation causes a change in the uplink path signal response for detecting traffic in the uplink path.

Claims

1. A signal repeating system for a wireless network comprising:

signal repeating circuitry defining an uplink path for processing signals repeated between endpoints, the signal repeating circuitry including circuitry for selectively varying at least one parameter of the signals that are processed in the uplink path;

circuitry for evaluating signals received from one or more mobile devices that are received in the uplink path of the signal repeating system and for measuring a level value of the signals received from the one or more mobile devices; and

processing circuitry configured for comparing a signal associated with the selective variation of the at least one parameter with the measured level value of the received mobile device signals and configured for determining if the selective variation of the least one parameter causes a change in the measured level value of the received mobile device signals in order to detect the existence of mobile device traffic in the uplink path.

2. The signal repeating system of claim 1, wherein the at least one parameter that is selectively varied includes the level of the signals processed in the uplink path.

3. The signal repeating system of claim 2, wherein the signal repeating circuitry has gain circuitry for selectively varying the level of the signals processed in the uplink path, the gain circuitry configured to vary the level of signals according to a waveform.

4. The signal repeating system of claim 3, further configured to vary an average gain of the gain circuitry.

5. The signal repeating system of claim 1, further comprising control circuitry in the repeating circuitry that is configured to control the selective variation of the at least one parameter.

6. The signal repeating system of claim 1, wherein the processing circuitry evaluates at least one peak resulting from the comparison of the signal associated with the selective variation of the at least one parameter and the measured level value of the received mobile device signals to determine the existence of traffic in the uplink path.

7. The signal repeating system of claim 1, wherein the selective variation of the at least one parameter of the signals processed in the uplink path is synchronized with a parameter of the wireless network.

8. The signal repeating system of claim 1, wherein the selective variation of the at least one parameter is aligned, in at least one of phase or frequency, with a standard of the wireless network.

9. The signal repeating system of claim 1, further comprising at least one of an antenna or a wire media link coupled with the signal repeating circuitry and configured to communicate with a base station.

10. The signal repeating system of claim 9, further comprising:

a master unit configured for communicating with the base station; and

a wire media link coupling the signal repeating circuitry with the master unit.

11. A distributed antenna system for a wireless network comprising:

a master unit configured for communicating with a base station;

at least one remote unit;

a media link coupling the at least one remote unit and the master unit; and

the at least one remote unit including;

signal repeating circuitry coupled for defining an uplink path for processing signals, the signal repeating circuitry including circuitry for selectively varying at least one parameter of the signals that are processed in the uplink path;

circuitry for evaluating signals received from one or more mobile devices that are received in the uplink path of the distributed antenna system and for measuring a level value of the signals received from the one or more mobile devices; and

processing circuitry configured for comparing a signal associated with the selective variation of the at least one parameter with the measured level value of the received mobile device signals and configured for determining if the selective variation of the at least one parameter causes a change in the measured level value of the received mobile device signals in order to detect the existence of mobile device traffic in the uplink path.

12. A method for determining the existence of traffic in a signal repeating system for a wireless network, the method comprising:

processing signals that are repeated between endpoints through signal repeating circuitry that defines an uplink path;

selectively varying at least one parameter of the signals that are processed in the uplink path;

evaluating signals received from one or more mobile devices that are received in the uplink path of the signal repeating system and measuring a level value of the signals received from the one or more mobile devices; and

comparing a signal associated with the selective variation of the at least one parameter with the measured level value of the received mobile device signals and determining if the selective variation of the at least one parameter causes a change in the measured level value of the received mobile device signals in order to detect the existence of mobile device traffic in the uplink path.

13. The method of claim 12, further comprising selectively varying the level of signals processed in the uplink path.

14. The method of claim 12, further comprising selectively varying the gain of signals processed in the uplink path according to a waveform.

15. The method of claim 14, further comprising varying an average gain of the signals processed in the uplink path in addition to varying the gain of the signals processed in the uplink path according to a waveform.

16. The method of claim 12, further comprising evaluating at least one peak resulting from the comparison of the signal associated with the selective variation of the at least one parameter and the measured level value of the received mobile device signals to determine the existence of traffic in the uplink path.

17. The method of claim 12, further comprising synchronizing the selective variation of the at least one parameter of the signals processed in the uplink path with a parameter of the wireless network.

18. The method of claim 12, further comprising aligning the selective variation of the at least one parameter, in at least one of phase or frequency, with a standard of the wireless network.

19. The method of claim 12, further comprising comparing the signal associated with the selective variation of the at least one parameter with the evaluated uplink path signal response to the selective variation to provide multiple curves and averaging the multiple curves.

20. The method of claim 12, further comprising measuring a transmit power that is required by a mobile device at an endpoint for communicating with another endpoint and evaluating the transmit power, along with the comparison of the signal associated with the selective variation and the measured level value of the received mobile device signals, in order to detect the existence of traffic in the uplink path.