Proportional Fairness Packet Scheduling Strategy for Downlink LTE

• Main Authors: Shi-Yuan Ding, 丁璽伝
• Other Authors: 葛煥昭
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/48803989445727644996

碩士 === 淡江大學 === 資訊工程學系碩士班 === 99 === Nowadays, the main purpose of the scheduler for Long Term Evolution (LTE) aims to provide the best system performance. However, it may decrease the system performance for the latency and starvation of lower priority connections in resource allocation phase. This paper proposed an efficient algorithm including scheduling strategy and resource allocation mechanism to avoid the latency or starvation of the lower priority connections and maintain the system performance in downlink of LTE. This algorithm discusses five levels of the bandwidth request situations to assign the priority and allocate the bandwidth for each connection. The simulations utilize the condition of the latency and starvation, which are the most important factors to identify the satisfaction of QoS, to express the performance of the scheduler. As shown in the results of simulations, the proposed algorithm could provide the proportional fairness and high system performance in downlink of LTE.