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Downlink Scheduling Algorithm Based on Traffic Arrival Rate for Mobile Telecommunication System  

Kim, Jung-Jong (숭실대학교 정보통신전자공학부 통신망 설계 및 분석 연구실)
Hwang, Jun-Ho (숭실대학교 정보통신전자공학부 통신망 설계 및 분석 연구실)
Yoo, Myung-Sik (숭실대학교 정보통신전자공학부 통신망 설계 및 분석 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.1B, 2010 , pp. 20-26 More about this Journal
Abstract
The downlink scheduling algorithm has a great impact on the performance of mobile telecommunication system. In proportional fairness (PF) scheduling algorithm, the resource is allocated proportionally to the quality of wireless channel. Thus, PF has difficulty in servicing the users having more downlink traffic. One can allocate the resource proportionally to the accumulated queue length. However, this leads to system throughput degradation since the users having low channel quality get more and more resource allocated due to accumulation property of queue. In this paper, we propose a new downlink scheduling algorithm, which extends PF algorithm by incorporating downlink traffic arrival rate. The proposed algorithm can effectively cope with users having more downlink traffic, and maintain high system throughput by eliminating accumulation effect in the algorithm. With computer simulations, it is verified that the proposed algorithm performs better than existing algorithms.
Keywords
Downlink Scheduling Algorithm; Traffic Arrival Rate; Proportional Fairness;
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