Patent ID: 9648383
Date: 2017-05-09
CPC Classifications: H04N,H04W

Claim:
1. A method of transmitting a measurement report frame from a first station to a second station in a regulatory domain in which a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN), the method comprising: receiving, at the first station, a measurement request frame, requesting to measure at least one channel in TVWS (TV White Space), from the second station; detecting a primary service signal during a measurement duration based on the measurement request frame; and transmitting, to the second station, the measurement report frame, reporting a measurement result of TV channels on which the at least one channel in TVWS is extended, wherein the measurement report frame comprises a Primary Service Signal Map field, a primary service signal type field, and a measurement duration field indicating a measurement duration for which the first station performs detecting, wherein the Primary Service Signal Map field comprises at least one TV channel number subfield indicating a channel number of a TV channel on which the primary service signal is detected, wherein the primary service signal type field indicates a type of each detected primary service signal determined by a type of a device transmitting the primary service signal, wherein a value of the primary service signal type field indicates whether the second station should lower a maximum transmit power when the second station transmits a signal to the first station using the adjacent channel of the TV channel on which the primary service signal is detected, and wherein a TV channel indicated by the TV channel number subfield is a TV channel on which the primary service signal over a certain threshold energy level is detected for the measurement duration.