An efficient MAC scheme with modified RTS/CTS of IEEE P1901

According to multimedia service distribution such as High-Definition Television (HDTV), Internet Protocol Television (IPTV) and Voice Over Internet Protocol (VoIP), the networks are required to guarantee Quality of Service (QoS) and real-time performance. Power Line Communication Technology is used for data transfer as well as the transfer of electric power. However, power line communication has some problems in wireless communication such as a noise and hidden station problem. And MAC cycle is synchronized with AC cycle of power line. MAC scheme is week in real time data transmission with short cycle. Therefore, in this paper, we propose a new MAC scheme for realtime service. Proposed scheme uses new message called TRINFO. It has scheduling information and is added to the RTS/CTS message. And we divide MAC cycle between time slot request region and data transmission region. Finally, there is a simulation with MAC performance of IEEE P1901 standard and the proposed MAC. Simulation result shows that a proposed scheme outperforms existing standards from the viewpoints of jitter and delay.