Front-End Survivability in Wireless Optical Broadband Access Network

Background: Survivability is one of the key issues of wireless optical broadband (WOBAN) access networks. Survivability means providing continuous services to users if a device/link failure occurs in the network. The component /link failure can occur in the network due to any reason. In this condition, huge data loss will occur in the network. Methods: In this paper, we consider the front-end survivability in WOBAN. We propose a novel maximum protection minimum link cost routing algorithm (MPMLC) that provides path protection with a minimum link cost to the front-end of the WOBAN. The proposed MPMLC algorithm assigns weight/cost to a wireless link using link-state prediction (LSP). The path with minimum cost is selected to route the traffic (actual/affected due to failure) of the front-end network. Results: The proposed algorithm outperforms in terms of reduced network delay and wireless link cost. It is also observed from simulation results that when multiple link failures occur in the network, the proposed MPMLC algorithm exhibit better results in reduced wireless link cost than the existing algorithm. Conclusion: The proposed MPMLC offers better candidature than the existing algorithm for the frontend survivability of the WOBAN.