Method and apparatus for use with a radio distributed antenna system having a control channel reference signal

• US 11,032,819 B2
• Filed: 09/15/2016
• Issued: 06/08/2021
• Est. Priority Date: 09/15/2016
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Gerszberg, Irwin
• Primary Examiner(s): Wyllie, Christopher T
• Application Number:
  US15/265,889
• Publication Number:
  US 20180077709A1
• Time in Patent Office: 1,727 Days
• Field of Search: None
• CPC Class Codes: H01Q 1/46 Electric supply lines or communication lines
• CPC Class Codes: H04B 3/52 Systems for transmission between fixed stations via waveguides
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission

Abstract

Aspects of the subject disclosure may include, for example, a base station interface configured to receive a modulated signal in a first spectral segment directed to a mobile communication device, wherein the modulated signal conforms to a wireless signaling protocol. A transceiver is configured to: convert the modulated signal in the first spectral segment to the first modulated signal in a second spectral segment based on a signal processing of the modulated signal and without modifying the wireless signaling protocol of the modulated signal, wherein the second spectral segment is outside the first spectral segment; generate fault mitigation messaging in a control channel; and transmit the modulated signal in the second spectral segment and the control channel to another network device of the distributed antenna system.

Claims

1. A method, comprising:

receiving a modulated signal, by a system of a first network element of a distributed antenna system, the first network element including signal processing circuitry, wherein the modulated signal is in a first spectral segment, and the modulated signal conforms to a wireless signaling protocol;

converting, by the system, the modulated signal in the first spectral segment to a modulated signal in a second spectral segment based on an analog signal processing of the modulated signal in the first spectral segment that does not require digital signal processing and without modifying the wireless signaling protocol of the modulated signal in the first spectral segment, wherein the second spectral segment is outside the first spectral segment;

generating, by the system, fault mitigation messaging in a control channel, the fault mitigation messaging including test results for a back-up communication link; and

transmitting, by the system, the modulated signal in the second spectral segment and the control channel including the test results for the back-up communication link to a second network element of the distributed antenna system, the control channel further including instructions directing the second network element of the distributed antenna system to convert the modulated signal in the second spectral segment to the modulated signal in the first spectral segment.

2. The method of claim 1, wherein the fault mitigation messaging further includes one of:

a fault detection indication;

instructions to select the back-up communication link;

or instructions to modify the first spectral segment to a different range of frequencies.

3. The method of claim 1, wherein the control channel is transmitted in a third spectral segment that is spaced apart from the second spectral segment.

4. The method of claim 1, further comprising:

transmitting a reference signal enabling the second network element to reduce a phase error when reconverting the modulated signal in the second spectral segment to the modulated signal in the first spectral segment for wireless distribution of the modulated signal in the first spectral segment to a communication device.

5. The method of claim 1, wherein the wireless signaling protocol comprises a Long-Term Evolution (LTE) wireless protocol or a fifth generation mobile communications protocol.

6. The method of claim 1, wherein the converting by the system comprises up-converting the modulated signal in the first spectral segment to the modulated signal in the second spectral segment.

7. The method of claim 6, wherein the converting by the second network element comprises down-converting the modulated signal in the second spectral segment to the modulated signal in the first spectral segment.

8. The method of claim 1, wherein the converting by the system comprises down-converting the modulated signal in the first spectral segment to the modulated signal in the second spectral segment.

9. The method of claim 8, wherein the converting by the second network element comprises up-converting the modulated signal in the second spectral segment to the modulated signal in the first spectral segment.

10. The method of claim 1, wherein the signal processing circuitry comprises analog signal processing circuitry that facilitates the analog signal processing, and wherein the analog signal processing does not require either an analog to digital conversion or a digital to analog conversion.

11. A network device of a distributed antenna system, the network device comprising:

a base station interface configured to receive a modulated signal in a first spectral segment, wherein the modulated signal conforms to a wireless signaling protocol; and

a transceiver configured to;

convert the modulated signal in the first spectral segment to a modulated signal in a second spectral segment based on an analog signal processing of the modulated signal in the first spectral segment that does not require digital signal processing and without modifying the wireless signaling protocol of the modulated signal in the first spectral segment, wherein the second spectral segment is outside the first spectral segment;

generate fault mitigation messaging in a control channel, the fault mitigation messaging including test results for a back-up communication link; and

transmit the modulated signal in the second spectral segment and the control channel including the test results for the back-up communication link to another network device of the distributed antenna system, the control channel further including instructions directing the another network device of the distributed antenna system to convert the modulated signal in the second spectral segment to the modulated signal in the first spectral segment.

12. The network device of claim 11, wherein the fault mitigation messaging further includes one of:

a fault detection indication;

instructions to select the back-up communication link;

or instructions to modify the first spectral segment to a different range of frequencies.

13. The network device of claim 11, wherein the control channel is transmitted in a third spectral segment that is spaced apart from the second spectral segment.

14. The network device of claim 11, wherein the transceiver is further configured to transmit a reference signal enabling the another network device to reduce a phase error when reconverting the modulated signal in the second spectral segment to the modulated signal in the first spectral segment for wireless distribution of the modulated signal in the first spectral segment to a communication device.

15. The network device of claim 11, wherein the analog signal processing does not require either an analog to digital conversion or a digital to analog conversion.

16. A network device of a distributed antenna system, the network device comprising:

receiver means for receiving a modulated signal in a first spectral segment, wherein the modulated signal is directed to a communication device, and wherein the modulated signal conforms to a wireless signaling protocol; and

transceiver means for;

converting the modulated signal in the first spectral segment to a modulated signal in a second spectral segment based on an analog signal processing of the modulated signal in the first spectral segment that does not require digital signal processing and without modifying the wireless signaling protocol of the modulated signal in the first spectral segment, wherein the second spectral segment is outside the first spectral segment;

generating fault mitigation messaging in a control channel, the fault mitigation messaging including test results for a back-up communication link; and

transmitting the modulated signal in the second spectral segment and the control channel including the test results for the back-up communication link to another network device of the distributed antenna system, the control channel further including instructions directing the another network device of the distributed antenna system to convert the modulated signal in the second spectral segment to the modulated signal in the first spectral segment.

17. The network device of claim 16, wherein the fault mitigation messaging further includes one of:

a fault detection indication;

instructions to select the back-up communication link;

or instructions to modify the first spectral segment to a different range of frequencies.

18. The network device of claim 16, wherein the transceiver means also transmits a reference signal enabling the another network device to reduce a phase error when reconverting the modulated signal in the second spectral segment to the modulated signal in the first spectral segment for wireless distribution of the modulated signal in the first spectral segment to the communication device.

19. The network device of claim 16, wherein the control channel is transmitted in a third spectral segment that is spaced apart from the second spectral segment.

20. The network device of claim 16, wherein the wireless signaling protocol comprises a Long-Term Evolution (LTE) wireless protocol or a fifth generation mobile communications protocol.