Embedded control signaling for wireless systems

• US 9,252,857 B2
• Filed: 11/07/2014
• Issued: 02/02/2016
• Est. Priority Date: 02/08/2013
• Status: Active Grant

• Current Assignee: COMS IP Holdings LLC
• Original Assignee: CBF Networks, Inc. (COMSovereign Holding Corp.)
• Inventors: Negus, Kevin J., Proctor, James A. Jr.
• Primary Examiner(s): Tran, Khai
• Application Number:
  US14/535,972
• Publication Number:
  US 20150063487A1
• Time in Patent Office: 452 Days
• Field of Search: 375/267, 375/211, 370/316, 370/315, 455/13.1, 455/15
• US Class Current: 1/1
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0486 taking channel rank into account
• CPC Class Codes: H04B 7/08 at the receiving station
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04B 7/15 Active relay systems
• CPC Class Codes: H04B 7/15592 Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/024
• CPC Class Codes: H04L 27/38 Demodulator circuits; Receiver circuits
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

Enhancement of wireless Channel Order and rank (ECHO) systems and ECHO repeater devices for enhancement of a wireless propagation channel for point to point or point to multipoint radio configurations are disclosed. The enhancement may be used for MIMO communications channels. Aspects support a richer multipath environment to increase the rank of the channel propagation matrix and/or to increase the magnitude of the coefficients of the propagation matrix between two or more radios. Such enhancement is applicable to backhaul radios in terms of increased range or in the number of supportable information streams. The installation provisioning optimization control monitoring and adaptation of such devices within a network of backhaul radios is also disclosed. Wireless links and control between IBR and ECHO devices and between ECHO devices and other ECHO devices are also disclosed.

Claims

1. A first radio comprising:

a plurality of combiners each respective combiner for linearly combining at least one of a plurality of first information streams with one or more associated first control signals to provide a respective combined transmission signal wherein at least one of the one or more associated first control signals is a spread spectrum signal;

a plurality of transmitter antennas each for simultaneously transmitting at least one respective combined transmission signal; and

at least one receiver for receiving control information from a second radio wherein the control information is usable to adjust one or more parameters at the first radio to enhance or prevent degradation to at least one performance characteristic of at least one of the first radio and the second radio and wherein the control information is based upon a reception of at least one of the one or more associated first control signals at the second radio.

2. The first radio of claim 1, wherein each respective combiner is further for linearly combining a unique one of the plurality of first information streams with a unique one of the one or more associated first control signals to provide the respective combined transmission signal.

3. The first radio of claim 1, wherein each respective combiner is further for linearly combining at least two of the plurality of first information streams with a unique one of the one or more associated first control signals to provide the respective combined transmission signal.

4. The first radio of claim 1, wherein each respective combiner linearly combines at least one of the plurality of first information streams with one or more associated first control signals simultaneously in time such that the one or more associated first control signals are embedded within the respective combined transmission signal at a same time as at least one or more of a set of symbols associated with at least one of the plurality of first information streams.

5. The first radio of claim 1, wherein each of the one or more associated first control signals comprises a signature signal.

6. The first radio of claim 1, wherein each of the one or more associated first control signals comprises a unique signature signal.

7. The first radio of claim 1, wherein a power level for each of the one or more associated first control signals within the respective combined transmission signal is set so as to not interfere with a demodulation of the at least one of the plurality of first information streams within the respective combined transmission signal at a receiving radio.

8. The first radio of claim 1, wherein each of the respective combined transmission signals is usable at one or more receiving radios for detecting a transmission from the first radio and wherein said detecting does not require demodulation of any of the plurality of first information streams at any one of the one or more receiving radios.

9. The first radio of claim 1, wherein each respective one of the plurality of transmitter antennas simultaneously transmits a unique respective combined transmission signal.

10. The first radio of claim 1, wherein at least one of the one or more associated first control signals that is a spread spectrum signal comprises or more of the following:

a PN code,

a Gold code,

a Walsh code,

Walsh Hadamard code,

an orthogonal code,

a CAZAC code,

a Zadoff-Chu code,

a maximal length “

M”

code,

a Golay Code,

a code for use as a phase reference,

a code for use as a amplitude reference,

a code for using to derive timing synchronization,

a pilot channel code for synchronization and as a phase and amplitude reference for demodulation.

11. The first radio of claim 1, wherein the received control information from the second radio is derived by the second radio without a use of demodulated information from the plurality of first information streams.

12. The first radio of claim 1, wherein the one or more parameters at the first radio comprise one or more of the following:

digital transmit beam former weights settings or parameters,

digital receive beam former weights settings or parameters,

phased array weights settings or parameters

gain of receive or transmit beam former parameters,

alignment of transmit or receive antenna elements,

electromechanical adjustments of antennas,

interference cancellation parameters

frequency tracking parameters,

timing tracking parameters,

receive antenna polarization related parameters,

transmit antenna polarization related parameters,

channel bandwidth,

operating frequencies,

antenna selection settings,

transmit power levels of one or more first information streams,

transmit power levels of one or more first control signals,

transmit power levels of one or more first information streams based upon reception of one or more first control signals.

13. The first radio of claim 1, wherein the at least one performance characteristic of at least one of the first radio and the second radio further comprises one or more of the following:

Signal to noise ratio (SNR), C/I, Io, Es, Ec, Ec/Io, Es/Io, Modulation and Coding Scheme (MCS), bit rate, RSSI, modulation, forward error correction (FEC), interference level.

14. The first radio of claim 1, wherein the adjustment of parameters includes a change to a signal level of one of the plurality of the first information streams as received at the second radio.

15. The first radio of claim 1, wherein the at least one performance characteristic of at least one of the first radio and the second radio further comprises one or more of the following:

at least one performance characteristic of each of the first radio and the second radio;

at least one performance characteristic of the first radio and no performance characteristics of the second radio;

at least one performance characteristic of the second radio and no performance characteristics of the first radio.

16. A wireless communication system comprising:

a first radio comprising;

a plurality of combiners each respective combiner for linearly combining at least one of a plurality of first information streams with one or more associated first control signals to provide a respective combined transmission signal wherein at least one of the one or more associated first control signals is a spread spectrum signal;

a plurality of transmitter antennas each for simultaneously transmitting at least one respective combined transmission signal; and

a second radio comprising;

at least one receiver for receiving control information from at least one of the one or more associated first control signals wherein the control information is usable to adjust one or more parameters at either of the first radio or the second radio to enhance or prevent degradation to at least one performance characteristic of at least one of the first radio and the second radio.

17. The wireless communication system of claim 16, wherein each respective combiner is further for linearly combining a unique one of the plurality of first information streams with a unique one of the one or more associated first control signals to provide the respective combined transmission signal.

18. The wireless communication system of claim 16, wherein each respective combiner is further for linearly combining at least two of the plurality of first information streams with a unique one of the one or more associated first control signals to provide the respective combined transmission signal.

19. The wireless communication system of claim 16, wherein each respective combiner linearly combines at least one of the plurality of first information streams with one or more associated first control signals simultaneously in time such that the one or more associated first control signals are embedded within the respective combined transmission signal at a same time as at least one or more of a set of symbols associated with at least one of the plurality of first information streams.

20. The wireless communication system of claim 16, wherein each of the one or more associated first control signals comprises a signature signal.

21. The wireless communication system of claim 16, wherein each of the one or more associated first control signals comprises a unique signature signal.

22. The wireless communication system of claim 16, wherein a power level for each of the one or more associated first control signals within the respective combined transmission signal is set so as to not interfere with a demodulation of the at least one of the plurality of first information streams within the respective combined transmission signal at a receiving radio.

23. The wireless communication system of claim 16, wherein each of the respective combined transmission signals is usable at one or more receiving radios for detecting a transmission from the first radio and wherein said detecting does not require demodulation of any of the plurality of first information streams at any one of the one or more receiving radios.

24. The wireless communication system of claim 16, wherein each respective one of the plurality of transmitter antennas simultaneously transmits a unique respective combined transmission signal.

25. The wireless communication system of claim 16, wherein at least one of the one or more associated first control signals that is a spread spectrum signal comprises or more of the following:

a PN code,

a Gold code,

a Walsh code,

Walsh Hadamard code,

an orthogonal code,

a CAZAC code,

a Zadoff-Chu code,

a maximal length “

M”

code,

a Golay Code,

a code for use as a phase reference,

a code for use as a amplitude reference,

a code for using to derive timing synchronization,

a pilot channel code for synchronization and as a phase and amplitude, reference for demodulation.

26. The wireless communication system of claim 16 wherein the received control information from the second radio is derived by the second radio without a use of demodulated information from the plurality of first information streams.

27. The wireless communication system of claim 16, wherein the one or more parameters at the first radio comprise one or more of the following:

digital transmit beam former weights settings or parameters,

digital receive beam former weights settings or parameters,

phased array weights settings or parameters

gain of receive or transmit beam former parameters,

alignment of transmit or receive antenna elements,

electromechanical adjustments of antennas,

interference cancellation parameters,

frequency tracking parameters,

timing tracking parameters,

receive antenna polarization related parameters,

transmit antenna polarization related parameters,

channel bandwidth,

operating frequencies,

antenna selection settings,

transmit power levels of one or more first information streams,

transmit power levels of one or more first control signals,

transmit power levels of one or more first information streams based upon reception of one or more first control signals.

28. The wireless communication system of claim 16, wherein the at least one performance characteristic of at least one of the first radio and the second radio further comprises one or more of the following:

Signal to noise ratio (SNR), C/I, Io, Es, Ec, Ec/Io, Es/Io, Modulation and Coding Scheme (MCS), bit rate RSSI modulation forward error correction (FEC), interference level.

29. The wireless communication system of claim 16, wherein the adjustment of parameters includes a change to a signal level of one of the plurality of the first information streams as received at the second radio.

30. The wireless communication system of claim 16, wherein the at least one performance characteristic of at least one of the first radio and the second radio further comprises one or more of the following:

at least one performance characteristic of each of the first radio and the second radio;

at least one performance characteristic of the first radio and no performance characteristics of the second radio;

at least one performance characteristic of the second radio and no performance characteristics of the first radio.