Multi sector antenna and mesh network system

• US 9,729,423 B1
• Filed: 11/24/2015
• Issued: 08/08/2017
• Est. Priority Date: 06/28/2010
• Status: Expired due to Fees

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google Inc. (Alphabet Inc.)
• Inventors: Tinoco, Eduardo, McManus, Terry
• Primary Examiner(s): Urban, Edward
• Assistant Examiner(s): Justus, Ralph H
• Application Number:
  US14/950,918
• Time in Patent Office: 623 Days
• Field of Search: 455 7, 455 131, 455 133, 455 16, 455 73, 455 84, 4555621, 4555751, 4555757, 455 902, 455130, 455269, 455272, 455275, 455 113, 455131, 455212, 455211, 455 17- 25, 375211, 375212
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 7/1555 Selecting relay station antenna mode, e.g. selecting omnidirectional -, directional beams, selecting polarizations
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A multi-sector antenna system is disclosed that includes two or more flat panel antennas facing different directions and configured to communicate with two separate sites using millimeter wave RF signals. A processing module is communicatively coupled to each of the flat panel antennas. In some embodiments, the processing module may be configured to receive incoming RF signals from a first site via a first flat panel antenna, convert the incoming RF signals to outgoing RF signals, and transmit the outgoing RF signals to a second site via the second flat panel antenna. The flat panel antennas may be configured to transmit and receive RF signals at frequencies in the range of about 57 GHz to 86 GHz. The multi-sector antenna system may be utilized in a mesh network system.

Claims

1. A radio system, comprising:

a controller board;

a quadplexer;

a high frequency transmitter coupled between the controller board and the quadplexer;

a low frequency transmitter coupled between the controller board and the quadplexer;

a high frequency receiver coupled between the controller board and the quadplexer; and

a low frequency receiver coupled between the controller board and the quadplexer;

wherein the controller board is configured to;

monitor characteristics of incoming radio frequency (RF) signals at the high frequency receiver and the low frequency receiver;

determine, for a given incoming RF signal, whether the given incoming RF signal has a signal to noise ratio (SNR) less than a threshold of the high frequency receiver; and

cause the quadplexer to select millimeter wave RF signals for transmission via the high frequency transmitter if the controller board determines that the SNR of the given incoming RF signal is not less than the threshold of the high frequency receiver.

2. The system of claim 1, wherein controller board is further configured to cause the quadplexer to select microwave RF signals for transmission via the low frequency transmitter if the SNR of the given incoming RF signal is less than the threshold of the high frequency receiver.

3. The system of claim 1, wherein the quadplexer is configured to discriminate over an outgoing higher frequency millimeter wave, an outgoing lower frequency microwave, an incoming higher frequency millimeter wave, and an incoming lower frequency microwave.

4. The system of claim 1, further comprising

a millimeter wave flat panel antenna;

and

a microwave antenna;

wherein the quadplexer is further coupled to the millimeter wave flat panel antenna and the microwave antenna.

5. The system of claim 4, wherein the quadplexer is coupled to the millimeter wave flat panel antenna via a waveguide interface for millimeter wave RF signals.

6. The system of claim 4, wherein the microwave antenna is coupled to the quadplexer via one of a waveguide and a coax cable.

7. The system of claim 1, further comprising:

a single antenna that has a dual frequency interface for millimeter wave RF signals and microwave RF signals;

wherein the quadplexer is coupled to the single antenna.

8. The system of claim 1, wherein the controller board continuously monitors the characteristics of the incoming RF signals.

9. The system of claim 1, wherein determining the SNR comprises measuring a bit error rate of links.

10. The system of claim 1, further comprising a backup communications network involving microwaves, the backup communications network configured to provide redundancy in adverse environmental conditions.

11. A method, comprising:

receiving, at a radio system, an incoming radio frequency (RF) signal from an antenna, the radio system comprising a controller board, a quadplexer, a high frequency transmitter coupled between the controller board and the quadplexer, a low frequency transmitter coupled between the controller board and the quadplexer, a high frequency receiver coupled between the controller board and the quadplexer, and a low frequency receiver coupled between the controller board and the quadplexer;

monitoring, by the controller board, characteristics of the incoming RF signal at the high frequency receiver and the low frequency receiver;

determining whether the received incoming RF signal has a signal to noise ratio (SNR) less than a threshold of the high frequency receiver; and

selecting millimeter wave RF signals for transmission via the high frequency transmitter if it is determined that the SNR of the received incoming RF signal is not less than the threshold of the high frequency receiver.

12. The method of claim 11, further comprising converting the incoming RF signal to millimeter wave RF signal if it is determined that the SNR of the received incoming RF signal is not less than the threshold of the high frequency receiver.

13. The method of claim 11, further comprising selecting microwave RF signals for transmission via the low frequency transmitter if the SNR of the received incoming RF signal is less than the threshold of the high frequency receiver.

14. The method of claim 13, further comprising converting the received incoming RF signal to a microwave RF signal.

15. The method of claim 11, further comprising discriminating, at the quadplexer, over an outgoing higher frequency millimeter wave, an outgoing lower frequency microwave, an incoming higher frequency millimeter wave, and an incoming lower frequency microwave.

16. The method of claim 11, wherein the incoming RF signal is received from one of a millimeter wave flat panel antenna, a microwave antenna, or a dual band antenna configured to receive both millimeter wave frequencies and microwave frequencies.

17. The method of claim 11, wherein the controller board continuously monitors the characteristics of a plurality of incoming RF signals.

18. The method of claim 11, wherein determining the SNR comprises measuring a bit error rate of links.