Patent ID: 7107032
Filing Date: 2006-09-12
Classification: G01S,H04B,H04K,H04W

Abstract:
1. A method of radar detection in a channel for radio local area networks operating in a regulatory band, comprising the steps of: setting a quiet time and a quiet period; periodically quieting the channel for the quiet time at a rate dictated by the quiet period; testing the channel for radar and measuring a received power during each quiet time; determining whether the received power exceeds a predetermined threshold; and declaring that there is radar operating on the channel when the received power exceeds the predetermined threshold; wherein: a ratio of at least 25% between the quiet time and the quiet period is designated first; the quiet time is 1 TU and the quiet period is 4 TUs where TU represents a time unit equal to 2 wherein the predetermined threshold is —(52+σ) dBm where σ is a predetermined value for measurement margin.