中国邮电高校学报(英文) ›› 2015, Vol. 22 ›› Issue (5): 63-70.doi: 10.1016/S1005-8885(15)60682-3

• Wireless • 上一篇    下一篇

Towards QoE-based resource allocation schemes in SC-FDMA systems

胡亚辉,Liu Yinlong,Zhou Xu,Xu Zhen   

  1. Institute of Information Engineering, Chinese Academy of Science, Beijing 100195, China
  • 收稿日期:2014-12-30 修回日期:2015-03-24 出版日期:2015-10-30 发布日期:2015-10-30
  • 通讯作者: 胡亚辉 E-mail:huyh@hpnl.ac.cn
  • 基金资助:

    This research is supported by the National Natural Science Foundation of China (61201232, 61303251) and Asia 3 Foresight Program (11161140319).

Towards QoE-based resource allocation schemes in SC-FDMA systems

Ya-Hui Hu Liu Yinlong Zhou Xu Xu Zhen   

  1. Institute of Information Engineering, Chinese Academy of Science, Beijing 100195, China
  • Received:2014-12-30 Revised:2015-03-24 Online:2015-10-30 Published:2015-10-30
  • Contact: Ya-Hui Hu E-mail:huyh@hpnl.ac.cn
  • Supported by:

    This research is supported by the National Natural Science Foundation of China (61201232, 61303251) and Asia 3 Foresight Program (11161140319).

摘要:

One of the critical techniques of quality of experience (QoE) provisioning in single carrier frequency division multiple access (SC-FDMA) systems is related to implementation of efficient radio resource allocation (RRA) schemes. So far as we know, QoE-based RRA in SC-FDMA systems is still an open issue. Therefore, in this paper, five different QoE-based RRA schemes in SC-FDMA system are investigated based on different criteria. The first three QoE criteria applied in other wireless systems are maximizing average mean opinion score (MOS) over all users (Max-MOS), maximizing the minimum MOS among all users (MaxMin-MOS) and maximizing the minimum MOS with dropping some users requiring the highest amount of resources (MaxMin-MinMOSX.Y-MOS). Then, the improved MaxMin-MinMOSX.Y-MOS criterion focuses on changing user dropping principle to promote the probability of more users obtaining satisfied experience. By defining MOS higher than threshold as the effective MOS, maximizing average effective MOS over all users (Max-EMOS) is proposed as a totally new criterion which gives quantitative measurement of how many users to what extent obtaining satisfied experience. Mathematical expressions and solutions of these schemes are also presented in this paper. In addition, performance comparisons are made in simulations to further display their respective advantages and disadvantages.

关键词:

single carrier frequency division multiple access (SC-FDMA), mean opinion score (MOS), quality of experience (QoE), radio resource allocation, Max-MOS, MaxMin-MOS, MaxMin-MinMOSX.Y-MOS, Max-EMOS

Abstract:

One of the critical techniques of quality of experience (QoE) provisioning in single carrier frequency division multiple access (SC-FDMA) systems is related to implementation of efficient radio resource allocation (RRA) schemes. So far as we know, QoE-based RRA in SC-FDMA systems is still an open issue. Therefore, in this paper, five different QoE-based RRA schemes in SC-FDMA system are investigated based on different criteria. The first three QoE criteria applied in other wireless systems are maximizing average mean opinion score (MOS) over all users (Max-MOS), maximizing the minimum MOS among all users (MaxMin-MOS) and maximizing the minimum MOS with dropping some users requiring the highest amount of resources (MaxMin-MinMOSX.Y-MOS). Then, the improved MaxMin-MinMOSX.Y-MOS criterion focuses on changing user dropping principle to promote the probability of more users obtaining satisfied experience. By defining MOS higher than threshold as the effective MOS, maximizing average effective MOS over all users (Max-EMOS) is proposed as a totally new criterion which gives quantitative measurement of how many users to what extent obtaining satisfied experience. Mathematical expressions and solutions of these schemes are also presented in this paper. In addition, performance comparisons are made in simulations to further display their respective advantages and disadvantages.

Key words:

single carrier frequency division multiple access (SC-FDMA), mean opinion score (MOS), quality of experience (QoE), radio resource allocation, Max-MOS, MaxMin-MOS, MaxMin-MinMOSX.Y-MOS, Max-EMOS