Efficiency-aware and fairness-aware joint-layer optimization for downlink data scheduling in OFDM

被引：0

作者：

GUO KunQi~1+ SUN LiXin~2 WANG Ping~1 JIA ShiLou~3 1 Shanghai Research Center for Wireless Communications

2 School of Measurement & Control Technology and Communication Engineering

3 Communication Research Center

机构：

来源：

ScienceinChina(SeriesF:InformationSciences) | 2008年 / 02期

关键词：

OFDM; efficiency and fairness; joint-layer; scheduling; utility function;

D O I：

暂无

中图分类号：

TN919.3 [数据传输技术];

学科分类号：

0810 ; 081001 ;

摘要：

Efficiency and fairness are two crucial issues to be considered for resource alloca- tion in multi-user wireless networks.Based on the joint optimization of physical layer and data link layer,an optimization model is derived to achieve efficient and fair downlink data scheduling in multi-user OFDM wireless networks by maximizing the total utility function with respect to the average waiting time of user queue.A dynamic sub-carrier allocation algorithm(DSAA)based on the optimization model is proposed in order to obtain the maximization of the total scheduling utility.Effi- ciency is improved by combining DSAA with time scale interference predictor(TSIP) which at large time scales predict ON/OFF period of user data with temporal corre- lation structure across multiple time scales in multi-user interference environment. Simulation results verify the efficiency and fairness of the scheme.

引用

页码：171 / 182

页数：12