计算机技术与发展2016，Vol.26Issue(9)：158-162,5.DOI:10.3969/j.issn.1673-629X.2016.09.035
基于IEEE802.16 m的一种改进比例公平调度算法
An Improved Proportional Fair Scheduling Algorithm Based on IEEE802 . 16 m
摘要
Abstract
Proportional fair scheduling algorithm can obtain a good tradeoff between system throughput and fairness. It has become an out-standing candidate scheme in wireless networks resource allocation. However,there are some defects in proportional fair scheduling algo-rithm. For example,it doesn’ t reflect the users’ channel state and consider the quality of different service. When it comes to the users’ channel state,since the proportional scheduling algorithm will inhibit the throughput of the poor channel users,and then affect the overall system throughput. In view of this problem,an improved proportional fairness scheduling algorithm is proposed,which will improve the throughput of IEEE802. 16m downlink OFDMA system. According to the users’ channel rate,the scheduling algorithm classifies users in-to several groups. Firstly,the scheduling priority of each group will be calculated. And then the group with the highest scheduling priority will be scheduled. Finally,according to the round-robin scheduling algorithm,resources will be allocated to users in the selected group. The simulation shows that the improved proportional fairness scheduling algorithm is better than the original in terms of throughput,fair-ness,delay and packet loss rate.关键词
IEEE802. 16m/OFDMA/资源分配/比例公平调度算法Key words
IEEE802. 16m/OFDMA/resource allocation/proportional fair scheduling algorithm分类
信息技术与安全科学引用本文复制引用
刘海林,张新有,邢焕来..基于IEEE802.16 m的一种改进比例公平调度算法[J].计算机技术与发展,2016,26(9):158-162,5.基金项目
国家自然科学基金资助项目(61401374) （61401374）
