Method and apparatus for dynamic protection area (DPA) protection

1. A method implemented in an electronic device to protect a dynamic protection area (DPA) adjoining one or more wireless networks, the method comprising:

detecting, by the electronic device, that the DPA is activated in the vicinity of a location recorded within a geolocation database;

comparing, by the electronic device, a threshold representing acceptable interference and an estimated aggregate interference by a set of citizens broadband radio service devices (CBSDs) to a set of points within the DPA, wherein the set of points comprises regularly spaced points along the boundary of a polygon forming the DPA and a number of randomly selected points within the DPA interior, wherein each CBSD operates at a frequency band between 3550 MHz to 3700 MHz, and wherein the estimated aggregate interference to a point of the set of points is measured at the point within the DPA; and

moderating, by the electronic device, transmission by one or more CBSDs within the set of CBSDs when the estimated aggregate interference is higher than what is acceptable to the DPA.

2. The method of claim 1 , wherein the electronic device comprises a spectrum access system serving a citizen broadband radio service (CBRS), and wherein the spectrum access system includes the geolocation database.

3. The method of claim 2 , further comprising:

registering the set of citizens broadband radio service devices (CBSDs) in the spectrum access system; and

granting, to each CBSD, a set of frequency allocations, an associated antenna pattern, and associated power levels to transmit.

4. The method of claim 1 , wherein moderating the transmission by the one or more CBSDs includes at least one of:

terminating transmission right of the one or more CBSDs;

reducing transmission power of the one or more CBSDs;

updating an associated antenna pattern for the CBSD; and

updating a spectrum used by the one or more CBSDs to reduce interference.

5. The method of claim 1 , wherein the estimated aggregate interference is determined by:

calculating a received power level at each of the set of points based on transmission from each of the set of CBSDs; and

determining the estimated aggregate interference based on the received power levels and respective radar receiver gains at each of the set of points.

6. The method of claim 5 , wherein the one or more CBSDs within the set of CBSDs are CBSDs that are intersected by the main beam of a radar receiver within the DPA.

7. The method of claim 5 , wherein the one or more CBSDs within the set of CBSDs are CBSDs that are intersected in an azimuthal direction from any of the set of points.

8. The method of claim 5 , wherein the estimated aggregate interference is further based on an attenuation factor for CBSDs in a direction that is within boresight of an antenna are set so that transmission by the CBSDs in the direction are moderated.

9. The method of claim 5 , wherein the estimated aggregate interference is further based on an attenuation factor for CBSDs that are closer to a shoreline of a coastal region along a radial direction are set higher than others that are further away.

10. The method of claim 1 , wherein the one or more CBSDs whose transmission are moderated are the ones at successive radial distances from the set of points an azimuthal direction, and wherein the interferences of the one or more CBSDs are higher than a threshold.

11. The method of claim 1 , wherein the threshold is an interference quota threshold that is based on an attenuation factor, and a number of CBSDs within the main beam of a radar within the DPA, and wherein the one or more CBSDs whose transmission are moderated are the ones that the respective interference quota is over the interference quota threshold.

12. The method of claim 11 , wherein the number of CBSDs within the main beam of the radar within the DPA is the maximum number of CBSDs within all beam instances when the radar sweeps across the location.

13. The method of claim 1 , wherein the threshold is a maximum allowed equivalent isotropic radiated power (EIRP) for a CBSD, and wherein the one or more CBSDs whose transmission are moderated are the ones whose respective output power is over the maximum allowed EIRP.

14. The method of claim 1 , wherein the estimated aggregate interference by a CBSD is measured by a constraining factor, value of which over zero causing moderating the CBSD.

15. The method of claim 14 , wherein the constraining factor is based on a number of CBSDs within and outside of the main beam of a radar within the DPA.

16. An electronic device to protect a dynamic protection area (DPA) adjoining one or more wireless networks, the electronic device comprising:

a processor and non-transitory computer-readable storage medium containing instructions, which when executed by the processor, cause the electronic device to perform:

detecting that the DPA is activated in the vicinity of a location recorded within a geolocation database;

comparing a threshold representing acceptable interference and an estimated aggregate interference by a set of citizens broadband radio service devices (CBSDs) to a set of points within the DPA, wherein each CBSD operates at a frequency band between 3550 MHz to 3700 MHz, and wherein the estimated aggregate interference to a point of the set of points is measured at the point within the DPA; and

moderating transmission by one or more CBSDs within the set of CBSDs when the estimated aggregate interference is higher than what is acceptable to the DPA, wherein the one or more CBSDs whose transmission are moderated are the ones at successive radial distances from the set of points an azimuthal direction, and wherein the interferences of the one or more CBSDs are higher than a threshold.

17. The electronic device of claim 16 , wherein the estimated aggregate interference is determined by:

calculating a received power level at each of the set of points based on transmission from each of the set of CBSDs; and

determining the estimated aggregate interference based on the received power levels and respective radar receiver gains at each of the set of points.

18. The electronic device of claim 16 , wherein the threshold is an interference quota threshold that is based on an attenuation factor, and a number of CBSDs within the main beam of a radar within the DPA, and wherein the one or more CBSDs whose transmission are moderated are the ones that the respective interference quota is over the interference quota threshold.

19. The electronic device of claim 16 , wherein the threshold is a maximum allowed equivalent isotropic radiated power (EIRP) for a CBSD, and wherein the one or more CBSDs whose transmission are moderated are the ones whose respective output power is over the maximum allowed EIRP.

20. An electronic device to protect a dynamic protection area (DPA) adjoining one or more wireless networks, the electronic device comprising:

a processor and non-transitory computer-readable storage medium containing instructions, which when executed by the processor, cause the electronic device to perform:

detecting that the DPA is activated in the vicinity of a location recorded within a geolocation database;

comparing a threshold representing acceptable interference and an estimated aggregate interference by a set of citizens broadband radio service devices (CBSDs) to a set of points within the DPA, wherein each CBSD operates at a frequency band between 3550 MHz to 3700 MHz, and wherein the estimated aggregate interference to a point of the set of points is measured at the point within the DPA, wherein the estimated aggregate interference is determined by:

calculating a received power level at each of the set of points based on transmission from each of the set of CBSDs; and

determining the estimated aggregate interference based on the received power levels and respective radar receiver gains at each of the set of points; and

moderating transmission by one or more CBSDs within the set of CBSDs when the estimated aggregate interference is higher than what is acceptable to the DPA.

21. The electronic device of claim 20 , wherein the electronic device comprises a spectrum access system serving a citizen broadband radio service (CBRS), and wherein the spectrum access system includes the geolocation database.