Mohammad Tahir, Dr. Hafizal Mohamad, Dr. Nordin Ramli and Lee Ying Loong
In this proposed system, directional antenna provides the advantage of reducing interference since its beam is pointing directionally and multi-radio system can provide simultenous transmissions to improve transmission efficiency.
In 802.11s draft standard, Mesh Coordinated Channel Access (MCCA) assumes the use of omnidirectional antenna and it prevents neighbour nodes to the MCCA Opportunity (MCCAOP) owner from transmitting during MCCAOP owner is transmitting, hence leads to interference problem and poor transmission efficiency. In order to overcome these problems, we propose a multi-radio system with the implementation of MCCA using multiple directional antennas. In this proposed system, directional antenna provides the advantage of reducing interference since its beam is pointing directionally and multi-radio syatem can provoide simultaneous transmissions to improve tranmission efficiency. Simulation is conducted to evaluate the network performance using the proposed system and results show that the throughput performance improves as number of radio in the system increases.
5th International Symposium On Communications, Control And Signal Processing (ISCCSP 2012), Rome, Italy, 2-4 May 2012.