A FICA based contention scheme for WLAN with non cooperation

The data rates of IEEE 802.11 WLAN (Wireless local area network) have increased from an initial 1Mbps to 600 Mbps leading to smaller packet transmission time. However the overheads used to facilitate this packet transmission have remained more or less the same thereby decreasing the efficiency of 802.11. We focus on improving this loss in efficiency. We develop on the idea of partitioning the 802.11 bandwidth into multiple sub-channels and allow multiple nodes to transmit on these sub-channels using OFDM (Orthogonal frequncy division multiplexing) technology. We consider a frequency domain contention scheme instead of the traditional time domain contention and provide some analysis. We also address the presence of selfish users in the system. We design a penalty scheme where the AP predicts and punishes the selfish users avoiding them to deviate from the assigned network parameters.