Enhancing the performance of hybrid optical wireless network by reducing delay using combination of reactive and proactive algorithm

Abstract

Hybrid Wireless Optical Broadband Access Network has recently emerged as a promising architecture among broadband access networks. It has wireless at the front end and Passive Optical Network (PON) at the backend. It provides high capacity, flexibility, and reliability and is a cost effective solution. Much of the recent research work has been focused on wireless mesh part because of the rapid advancements in wireless technology. But, network delay is still a major challenge, which is due to the capacity mismatch between optical and wireless parts of the network. In this paper, we propose a new scheme wherein we use a hybrid of reactive and proactive routing algorithms with a design goal of delay minimization. We compare our algorithm with two existing algorithms i.e., RARA (based on reactive routing only) and CADAR (based on proactive routing only). The simulation results indicate that our algorithm achieves lower delays at higher loads.