Proposal of a Reaction-Diffusion based Congestion Control Method for Wireless Mesh Networks

This paper proposes a congestion control method for a wireless mesh network. Each intermediate node has separate transmission buffers for each of next hop nodes. By following the mathematical reaction-diffusion formulation, an intermediate node simultaneously performs ´local optimization´ control that balances buffer occupancy among its transmission buffers and ´global optimization´ control that suppresses the variation in occupancy between intermediate nodes along the path. As a result, packets are distributed over the whole path and further a network and buffer overflow is prevented. The results of our simulation show that the proposed method can provide better communication quality under loaded condition.