Synchronization of co-located radios in a dynamic time division duplex system for interference mitigation

1. A method for operating a first of a plurality of co-located, non-time synchronous radios at a first location communicating data by frames with one or more other remote radios at a second and optionally additional locations in a wireless communication system, to synchronize first or uplink and/or second or downlink frame portions of the frames to mitigate interference between the co-located radios, comprising:

storing a frame table of attributes of uplink and/or downlink frame portions associated with frames of the first radio;

wirelessly receiving at the first radio RF transmissions from at least a second of the co-located radios;

monitoring by the first radio the spectral content of the RF transmissions from the at least second co-located radio;

determining by the first radio, based on the monitored spectral content, characteristics for uplink and/or downlink frame portions of the first co-located radio to mitigate interference with the at least second co-located radio; and

updating attributes in the frame table to enable interference-optimized uplink and/or downlink portions of frames of the first co-located radio.

2. The method of claim 1 and further including generating and transmitting from the first co-located radio uplink and/or downlink frame portions based on the updated stored attributes in the frame table.

3. The method of claim 2 wherein the method is used by a co-located radio such as a radio gateway unit, and generating and transmitting frame portions includes generating and transmitting downlink frame portions.

4. The method of claim 3 wherein generating and transmitting downlink frame portions includes generating and transmitting downlink frame portions with data instructing the one or more other remote radios with which the first co-located radio is communicating data to transmit uplink frame portions during time periods that the at least second co-located radio is not transmitting.

5. The method of claim 1 wherein the steps of monitoring the content and updating attributes are done periodically, and optionally at a rate that is less than a rate of successive transmissions of the at least second co-located radio.

6. The method of claim 1 wherein updating the attributes in the frame table includes updating attributes to cause the first co-located radio to generate and transmit frame portions during time periods that the at least second co-located radio is transmitting.

7. The method of claim 1 wherein updating the attributes in the frame table includes updating attributes to cause the first co-located radio to receive frame portions from one or more other remote radios with which the first radio is communicating data during time periods that the at least second co-located radio is not transmitting.

8. Operating a plurality of the co-located radios in accordance with the method of claim 1 .

9. A radio configured to operate in accordance with claim 1 .

10. The method of claim 1 wherein at least the first and second co-located radios are manufactured by different companies.

11. The method of claim 1 wherein updating the attributes in the frame table includes updating attributes to cause the first co-located radio to receive frame portions from one or more other remote radios with which the first radio is communicating data at a frequency that the at least second co-located radio is not transmitting.