METHOD OF OPTIMAL DATA TRANSMISSION FOR IMPROVING DATA TRANSMISSION RATE IN MULTI-HOP WIRELESS NETWORK

摘要

There is provided a method for optimal data transmission for improving a data transmission rate of a node with variable transmission power in a multi-hop wireless network, the method including the steps of: obtaining channel state information about a current wireless channel of the node; calculating a carrier sensing range in the number of hops using the obtained channel state information, a target signal-to-interference ratio, and a contention window size in order to minimize data collision; calculating the number of nodes attempting data transmission based on signals received from neighbor nodes, the number of the nodes attempting data transmission being the number of contention nodes; and setting transmission power adaptively according to the calculated carrier sensing range value and the contention node numbers and transmitting data with the set of transmission power.