Patent ID: 6795407
Filing Date: 2004-09-21
Classification: H04L,H04W

Abstract:
A method of establishing overlaid communications in a multi-carrier communication system between a plurality of wireless stations each capable of communicating on less than all carriers in the multi-carrier communication system comprising the steps of:providing each of the plurality of wireless stations capable of performing overlaid communications in the multi-carrier communication system a message which includes an assigned carrier and a commonly assigned calibration transmit power level for transmission, allowing a period of time for each of the plurality of wireless stations to transmit at least one calibration message on the assigned carrier at the commonly assigned calibration power level; transmitting from each of the plurality of wireless stations at least one calibration message on the assigned carrier at the commonly assigned calibration power level; receiving from each of the plurality of wireless stations information indicating transmissions from other ones of the plurality of wireless stations that they received and the receive power level of each of these received transmissions; and using the received information to map which ones of the plurality of wireless stations can communicate with other ones of the plurality of wireless stations on assigned carriers, at a common transmit power level chosen from a plurality of available transmit power levels so that subsequent signals from some of the plurality of wireless stations arriving at substantially the same time at another of the wireless stations have a substantially similar receive power level at the another wireless station.