Patent ID: 8229362

Claim:
A method of decreasing noise and interference in an uplink of a wireless communication system, comprising: detecting, at a serving base station, noise and interference levels above a threshold in unallocated portions for active subscriber stations, wherein the unallocated portions comprise the portions that are not assigned to any active subscriber station; scheduling, in response to the detecting, a noise and interference measurement frame that includes respective allocated portions for respective active subscriber stations and respective unallocated portions that are adjacent to the respective allocated portions, wherein the respective allocated portions and the respective unallocated portions are configured in a selected pattern; determining based on the scheduled frame, at the serving base station, respective signal levels in allocated portions and respective noise and interference levels in the respective unallocated portions of the noise and interference measurement frame; identifying one or more rogue subscriber stations, included in the respective active subscriber stations, based on the respective noise and interference levels associated with the respective active subscriber stations; and isolating the identified one or more rogue subscriber stations from other active subscriber stations.