Patent ID: 7382758
Filing Date: 2008-06-03
Classification: H04W

Abstract:
1. A method for wireless data transmission between at least three stations, the method comprising the steps of: transmitting a Request To Send (RTS) packet from a first station to an intermediate second station over a first frequency band; transmitting two Clear To Send (CTS) packets, which CTS packets include transmission timing information, from the second station simultaneously both to the first station and to a third station, wherein the CTS packet sent to the first station is transmitted over the first frequency band and the CTS packet sent to the third station is transmitted over a second frequency band; and transmitting a data packet from the first station to the second station, wherein the third station suspends, based on the transmission timing information included in the CTS packets, any unicast transmission to the second station during the transmission of the data packet from the first station to the second station.