Survivability of Fiber Wireless (FiWi) Access Network

FiWi access network provides the end-users with a large amount of bandwidth and reliability in a flexible manner as it integrates the technical merit of the fiber and wireless network, FiWi access network is a promising access technology, because of the tremendous increase in traffic demands in the FiWi access network, achieving good survivability is facing major challenges as vast traffic could be disrupted due to the failure of any FiWi portion. In this study, all-optical network failures are addressed. Single and multiple segments addressing is allocated an ONU backup in each segment satisfying the shortest distance to backup ONUs in other segments and classified network segments as a cluster. So, backup fibers are deployed between the backup ONUs in each cluster in separate segments to create a protection scheme that satisfies maximum protection and minimum cost. The results accomplished minimizing the backup fiber cost by 20 % compared with the ring scheme and minimize the spare capacity that needs for maximum protection by sharing the spare capacity for segments in the same cluster.