Cloud-integrated wireless optical broadband (CIW) access networks inheriting advantages of cloud computing, wireless and optical access networks have a broad prospect in the future. Due to failure of components like OLT level, ONU level, link or path failure and cloud component level in CIW, survivability is becoming one of the important issues. In this paper, we have presented cloud-integrated wireless-optical broadband access network with survivability using integer linear programming (ILP) model, to minimize the number of cloud components while providing maximum backup paths. Hence, we have proposed protection through cloud-integrated wireless router to available ONUs (PCIWRAO). So, evaluated the backup path computation. We have considered ONU level failure in which the affected traffic is transferred through wireless routers and cloud component to the available ONUs using Manhattan distance algorithm. Simulation results show different configurations for different number of routers and cloud components illustrating available backup path when ONU fails.

Background: Survivability is the one of the key issue of wireless optical broadband (WOBAN) access network. Survivability means to provide continuous services to users if a device/link failure occurs in the network Objective: 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 minimum link cost to front-end of the WOBAN. The proposed MPMLC algorithm assigns weight/cost to wireless link using link state prediction (LSP). Results: The path with minimum cost is selected to route the traffic (actual/affected due to failure) of front end network. The proposed algorithm outperforms in terms of reduced network delay and wireless link cost Conclusion: It is also observed from simulation results that when the multiple link failures occur in the network, proposed MPMLC algorithm exhibit better results in terms of reduced wireless link cost as compared to existing algorithm.

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