정보통신설비학회논문지 (Journal of The Institute of Information and Telecommunication Facilities Engineering)
- 제4권2호
- /
- Pages.37-43
- /
- 2005
- /
- 1598-6586(pISSN)
OFDMA/TDMA 시스템에서 PF 스케줄러의 구현
Implementation of proportional fair scheduler in OFDMA/TDMA wireless access networks
- Choi, Jin-Ghoo (KT Convergence Lab.) ;
- Choi, Jin-Hee (Department of Computer Science and Engineering, Korea University)
- 발행 : 2005.06.01
초록
A simple scheduler satisfying the proportional fairness (PF) was introduced in wireless access networks and revealed that it can achieve a good compromise between total throughput and user fairness. Though it has received much attention for some time, its application was mainly restricted to the single channel systems. In this paper, we study how to implement the PF scheduler in the multi-channel environments such as OFDMA/TDMA. Besides the traditional PF-SC scheme, we propose a new PF-OPT scheme that is the genuine PF scheduler in a sense of maximizing the total log-utility of users. The simulation results show that PF-OPT gives large throughput under the heterogeneous subchannel statistics.