Nowadays Fiber-Wireless (FiWi) networks is emerging solution to provide the high throughput for end users. This network is built on top of two different networks such as optical networks and wireless networks in order to access the advantages of both networks in FiWi. FiWi supports the mobility of wireless networks as well as high bandwidth of optical networks. Passive Optical Networks (PONs) is most commonly used optical network due to its characteristics of high bandwidth, less delay and less cost. The core challenge is associated with FiWi networks scalability, it means if the number of users more then it causes increasing end to end delay at Optical Network Unit (ONU). ONU is device which is acts as gateway between Wireless Local Area Networks (WLANs) or Mobile Ad Hoc Networks (MANET) and PONs for data communication between different access points of WLAN and PON. Increasing end to end delay leads to decreasing the overall QoS performance of FiWi networks. Thus it needs the resource optimization method at ONU to allocate bandwidth efficiently to get high speed performance of FiWi networks. This paper proposed the novel dynamic multilevel priority queuing algorithm to enhance the bandwidth utilization for FiWi communication networks. Each ONU node is configured with three levels of priority queues in which data is divided according to priorities. The real time data is placed into the queue which is having highest priority queue, non-real-time data placed into other two queues depending on the threshold values set for them. The experimental results prove the efficiency of proposed approach over the state-of-art technique.
Volume 11 | 04-Special Issue
Pages: 412-418