Performance Analysis of Ieee 802.16m Mobile Multi-hop Relay Networks

Wireless technology usage is rapidly expanding and WiMAX technology is more widely used. The new WiMAX standard adopts relay stations (RS) for better QoS. Published researches on multi-hop relay networks concentrate on quality of service, stations resources distribution and management, as well as creating network topology for better service quality [1-4]. However no specific study conducted to determine the most efficient zone to deploy RS. In this paper the IEEE 802.16m multi-hop system was simulated using the network simulator OPNET. Adaptive modulation is considered and the objective was to determine which modulation zone is the most efficient for relay stations to be deployed to achieve maximal network throughput. Moreover, the paper analyzes the number of subscriber stations impact to the network throughput with slot load in one frame and optimal relay stations number connected to one base station to ensure the highest quality internet connection.