A New Protection Scheme Based on Daily Traffic Demand for Survivable Fiber-Wireless (FiWi) Access Network

Abstract

With a tremendous increase of traffic demands in fiber- wireless (FiWi) access network, achieving good survivability is facing significant challenges because vast traffic could be interrupted due to the failure of any FiWi components. Especially, when a segment failure occurs, all the components in the segment could be disconnected with optical line terminal (OLT). Several existing research works focus on handling segment failures by deploying backup fibers. However, they ignore the fact that the traffic demand is frequently varied with different human daily needs. Therefore, a new protection scheme based on daily traffic demand (PS-DTD) is proposed to deal with the segment failure instead in this paper. In the scheme, we optimize the deployment of backup fibers by solving minimum cost maximum flow and minimum cost maximum matching problems. Simulation results show that the proposed PS- DTD mechanism outperforms the existing ones in terms of cost and efficiency especially under high traffic demands.