MCCA-assisted multi-radio system using directional antenna

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 present a multi-radio system with the implementation of MCCA using multiple sectored antennas. In this system, sectored antenna provides the advantage of reducing interference since its beam is pointing directionally and multi-radio system can provide simultaneous transmissions to improve transmission 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.