Patent ID: 8649324
Filing Date: 2014-02-11
Classification: H04W

Abstract:
1. A data communication method in a basic service set (BSS) of a wireless communication system using a carrier sense multiple access with collision avoidance (CSMA/CA) protocol, the data communication method comprising: performing, by first and second nodes within the BSS, communication within a predetermined first time period; and transmitting, by a third node within the BSS, data to a fourth node within the first time period through a channel which is not used by the other nodes, wherein the first node comprises an access point, and wherein the third node selects the fourth node among one or more nodes except the first and second nodes in the BSS based on channel state information between the access point and the one or more nodes of which the access point previously informs the third node, the one or more nodes having more favorable channel states than that of the third node.