Station aggregation scheme considering channel interference for radio on demand networks

With the rapid growth of the Internet, deploying energy-efficient networking technology is an urgent matter. In particular, wireless LAN (WLAN), which is widely used due to its ease of deployment and low cost of installation, is also required to be energy efficient. For this purpose, R & D activities for Radio-On-Demand-Networks (ROD) have been proposed. In ROD networks, access points (APs) have been equipped with wake-up receivers, switching their status to sleep mode, depending on the traffic distribution in the network. In the present paper, a station (STA) aggregation scheme in ROD networks considering channel interference is proposed. In this scheme, APs cooperate with each other and aggregate their STAs depending on the channel utilization information rather than the AP utilization. The simulation results reveal the scheme effectiveness in terms of power savings without throughput degradation in WLANs even in the presence of interference.