Flow limited and risk aware routing algorithm to improve performance of Wireless-Optical Broadband Access Network

A Wireless-Optical Broadband Access Network (WOBAN) is gaining more attention because its good performance and merits such as reliability, robustness and high capacity as well as flexibility. There are many factors that can affect the network performance, such as delay, packet loss and capacity utilization. In this paper, we proposed the Flow Limited and Risk Aware Routing Algorithm (FLRAR), which takes capacity utilization and link failure into account. In out algorithm, we used the capacity upper limit to distribute the load from heavily weighted link to other links. And we also used Link Success Rate (LSR) to detect the link failure and redirect the related packets. Thus, FLRAR finally achieves the improvement in: load balancing, number of hops, bandwidth utilization and self healing.