Patent ID: 7990933
Filing Date: 2011-08-02
Classification: H04B,H04W

Abstract:
1. A time duplexed communications system for avoiding bursts of periodic interference comprising segment B radiation from a microwave source, comprising: a time duplex data frame having a frame duration approximately one of an integer multiple and an integer divisor of a period of the bursts of periodic interference, the time duplex data frame characterized by a plurality of communications slots; a detection circuit coupled to an AC source common to the communication system and a source of the bursts of periodic interference, the detection circuit configured to generate a signal indicative of the frequency of the AC source; and a controller to pre-determine based on said signal which of the plurality of communication slots that the segment B radiation interferes, wherein the time duplexed communications system is configured to synchronize timing of the time duplex data frame with timing of the bursts of periodic interference, wherein each of the bursts of periodic interference from segment B radiation is centered within a single timeslot of the time duplex data frame and only a single duplex link comprising an uplink-downlink timeslot pair of the time duplex data frame experiences the periodic bursts of interference from segment B radiation, and wherein, in the presence of segment B radiation, data packets are transmitted only once and only in communication slots other than the pre-determined communication slot with which the segment B radiation interferes.