AGILE DUPLEXING WIRELESS RADIO DEVICES

• US 20140219142A1
• Filed: 01/31/2014
• Published: 08/07/2014
• Est. Priority Date: 02/04/2013
• Status: Active Grant

• Current Assignee: Ubiquiti Inc.
• Original Assignee: Christopher Fay, Gary D. Schulz, Paul Odlyzko
• Inventors: SCHULZ, Gary D., ODLYZKO, Paul, FAY, Christopher
• Granted Patent: US 9,397,820 B2
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04K 2203/18 for wireless local area networks or WLAN
• CPC Class Codes: H04K 3/226 Selection of non-jammed channel for communication spectrum sharing arrangements H04W16/14; selection of wireless resources by user or terminal H04W72/02
• CPC Class Codes: H04K 3/822 by detecting the presence of a surveillance, interception or detection
• CPC Class Codes: H04L 27/32 Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
• CPC Class Codes: H04L 5/0014 Three-dimensional division time-code-space division H04B7/0413, H04B7/0697
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex

Abstract

Radio devices having separate transmission and reception reflectors for transmitting and receiving wireless signals that detect interference in a transmission channel and may be automatically or manually switch duplexing schemes when reflections, radar or other interference is detected. These devices typically include both a transmission antenna reflector and a receiving transmitter reflector, which may be connected or formed of a single housing, that are operatively coupled to radio circuitry for transmission and reception of wireless signals. Interference, and particularly reflected signals between the transmitter and receiver, are avoided by including a detector coupled to either (or both) reflectors that monitors the transmitting frequency channel; reflections and/or radar signals may be detected and may trigger switching (manual or automatic switching) to a different duplexing modes such as frequency-division duplexing (FDD), time-division duplexing (TDD), etc.

Claims

1. A radio device for transmission of wireless signals that switches between duplexing schemes, the device comprising:

a parabolic transmitting reflector;

a parabolic receiving reflector;

radio circuitry configured to utilize a plurality of duplexing schemes to transmit a radio-frequency signal in a frequency channel from the parabolic transmitting reflector and to receive a radio-frequency signal from the parabolic receiving reflector, further wherein the radio circuitry comprises a transmitter and a receiver, wherein the transmitter is coupled to the parabolic transmitting reflector and the receiver is coupled to the parabolic receiving reflector; and

a detector coupled to either the parabolic transmitting reflector or the parabolic receiving reflector, wherein the detector is configured to monitor the same frequency channel as the radio-frequency signal transmitted by the radio circuitry to detect a reflection of the transmitted radio-frequency signal,

wherein the device is configured trigger for switching of duplexing schemes for the device when the reflection is detected.

2. The device of claim 1, further wherein the device is configured to automatically switch duplexing schemes for the device upon triggering.

3. The device of claim 1, further wherein the device is configured to present an alert to a user to manually switch duplexing schemes for the device upon triggering.

4. The device of claim 1, wherein the device is configured to trigger for switching from frequency-division duplexing (FDD) to time-division duplexing (TDD) when the reflection is detected.

5. The device of claim 1, wherein the device is configured to trigger for switching from frequency-division duplexing (FDD) to time-division duplexing (TDD) when the power of a detected reflection is greater than a threshold power level.

6. The device of claim 1, wherein the device is configured to trigger for switching from frequency-division duplexing (FDD) to time-division duplexing (TDD) when the power of the detected reflection is greater than a threshold power level and return to FDD if the power of the reflected signal is below the threshold power level or if the detector does not detect a reflected signal.

7. The device of claim 1, wherein the detector comprises a correlator configured to correlate a signal received by the detector with the radio-frequency signal transmitted by the radio circuitry to detect the reflection of the transmitted radio-frequency signal.

8. The device of claim 1, wherein the detector is coupled to the parabolic receiving reflector.

9. The device of claim 1, wherein the radio circuitry comprises a pair of transmitters and a pair of receivers, wherein the transmitters are coupled to the parabolic transmitting reflector and the receivers are coupled to the parabolic receiving reflector.

10. The device of claim 1, wherein the detector comprises a detector receiver coupled to the parabolic receiving reflector.

11. The device of claim 1, wherein the detector is configured as a spectrum analyzer.

12. A radio device for transmission of wireless signals that performs continuous dynamic frequency selection (DFS), the device comprising:

a parabolic transmitting reflector;

a parabolic receiving reflector;

radio circuitry configured to transmit radio-frequency signals in a frequency channel from the parabolic transmitting reflector and to receive radio-frequency signals from the parabolic receiving reflector, further wherein the radio circuitry comprises a plurality of transmitters and a plurality of receivers, wherein the transmitters are coupled to the parabolic transmitting reflector and the receivers are coupled to the parabolic receiving reflector; and

a detector configured to operate concurrently with transmission by the radio circuitry, the detector coupled to either the parabolic transmitting reflector or the parabolic receiving reflector, wherein the detector is configured to continuously monitor the same frequency channel as transmitted signals to detect radar signals,

wherein the device is configured to switch the frequency channel that the radio circuitry transmits on when a radar signal is detected.

13. The device of claim 12, wherein the detector comprises a correlator configured to correlate a signal received by the detector with a predetermined radar signal.

14. The device of claim 12, wherein the detector comprises a correlator configured to correlate a signal received by the detector with the radio-frequency signal transmitted by the radio circuitry to detect a reflection of the transmitted radio-frequency signal.

15. The device of claim 12, wherein the detector is coupled to the parabolic receiving reflector.

16. The device of claim 12, wherein the radio circuitry comprises a pair of transmitters and a pair of receivers, wherein the transmitters are coupled to the parabolic transmitting reflector and the receivers are coupled to the parabolic receiving reflector.

17. The device of claim 12, wherein the detector comprises a detector receiver coupled to the parabolic receiving reflector.

18. The device of claim 12, wherein the detector is configured as a spectrum analyzer.

19. A radio device for transmission of wireless signals that continuously monitors a transmitted frequency channel to avoid interference, the device comprising:

a parabolic transmitting reflector;

a parabolic receiving reflector;

radio circuitry configured to transmit a radio-frequency signal in a frequency channel from the parabolic transmitting reflector and to receive a radio-frequency signal from the parabolic receiving reflector, further wherein the radio circuitry comprises a transmitter and a receiver, wherein the transmitter is coupled to the parabolic transmitting reflector and the receiver is coupled to the parabolic receiving reflector; and

a detector configured to operate concurrently with transmission by the radio circuitry, the detector coupled to either the parabolic transmitting reflector or the parabolic receiving reflector, wherein the detector is configured to continuously monitor the same frequency channel as the radio-frequency signal transmitted by the radio circuitry to detect interference including a reflection of the transmitted radio-frequency signal and a radar signal,

wherein the device is configured to switch duplexing schemes for the device when the reflection is detected and to switch the frequency channel that the radio circuitry transmits on when a radar signal is detected.

20. The device of claim 19, wherein the device is configured to switch from frequency-division duplexing (FDD) to time-division duplexing (TDD) when the reflection is detected.

21. The device of claim 19, wherein the device is configured to alert a user to manually switch duplexing schemes for the device when the reflection is detected and to automatically switch the frequency channel that the radio circuit transmits when a radar signal is detected.

22. The device of claim 19, wherein the device is configured to automatically switch from frequency-division duplexing (FDD) to time-division duplexing (TDD) when the power of the detected reflection is greater than a threshold power level.

23. The device of claim 19, wherein the device is configured to automatically switch from frequency-division duplexing (FDD) to time-division duplexing (TDD) when the power of the detected reflection is greater than a threshold power level and return to FDD if the power of the reflected signal is below the threshold power level or if the detector does not detect a reflected signal.

24. The device of claim 19, wherein the detector comprises a correlator configured to correlate a signal received by the detector with the radio-frequency signal transmitted by the radio circuitry to detect the reflection of the transmitted radio-frequency signal.

25. The device of claim 19, wherein the detector is coupled to the parabolic receiving reflector.

26. The device of claim 19, wherein the radio circuitry comprises a pair of transmitters and a pair of receivers, wherein the transmitters are coupled to the parabolic transmitting reflector and the receivers are coupled to the parabolic receiving reflector.

27. The device of claim 19, wherein the detector comprises a detector receiver coupled to the parabolic receiving reflector.

28. The device of claim 19, wherein the detector is configured as a spectrum analyzer.