Title:
COMMUNICATIONS SYSTEM ROBUST AGAINST PERIODIC INTERFERENCE
Document Type and Number:
WIPO Patent Application WO2001065709
Kind Code:
A8
Abstract:
Systems, devices and methods for communicating digital information in a manner that avoids periodic or non-periodic interference such as that radiated by microwave ovens and other interference sources. The invention contemplates four general approaches, and combinations of those approaches. First, transmission of frames may be synchronized or phaselocked to absence of periodic interference. Second, transmission of frames may be advanced or delayed based on whether the periodic interference affects transmission of headers and trailers on the frames. Third, transmission of slots within frames may be controlled based on sensing presence or absence of the interference. Such control may be based at least in part on comparing the transmission of slots to the waveform of the periodic interference in order to establish a transmission pattern. Fourth, transmission of slots within frames, or frames themselves, may be discontinued during periods when interference is sensed.
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Inventors:
MC INTOSH P STUCKEY
Application Number:
PCT/US2001/040089
Publication Date:
November 22, 2001
Filing Date:
February 12, 2001
Export Citation:
Assignee:
HOME WIRELESS NETWORKS INC (US)
International Classes:
H04B1/10; H04L1/00; H04L12/56; (IPC1-7): H04B1/10; H04B1/707; H04L12/28; H04L1/00; H04Q7/36
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