Research on cross-layer QoS framework and scheduling algorithm based on IEEE 802.16

摘要

The paper mainly researches on service scheduling algorithms for IEEE 802.16. Firstly, the paper researches the QoS mechanism of MAC from two sides, the management of service flow and QoS guarantee. The improved cross layer QoS framework is proposed for the shortcomings of the existing QoS framework. Secondly, service scheduling algorithms are also one of the key parts to realize QoS. The paper mainly studies and compares the generic scheduling algorithms used in wired and wireless network. Aiming at the shortcomings of RR and MAX C/I algorithms, the improved MAX C/I algorithm is proposed to get the balance of fairness and throughput. Finally, the matlab simulation platform is constructed to evaluate the performance of the improved MAX C/I and the class-based scheduling scheme. The simulation results show that the scheme satisfies the QoS requirement of every service and improves the fairness of the users and system throughput.