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中国科学院大学学报 ›› 2014, Vol. 31 ›› Issue (5): 685-690.DOI: 10.7523/j.issn.2095-6134.2014.05.015

• 计算机科学 • 上一篇    下一篇

一种基于有效容量的混合业务资源分配算法

曹家燕, 邱玲   

  1. 中国科学技术大学个人通信与扩频实验室, 合肥 230027
  • 收稿日期:2013-09-24 修回日期:2013-12-19 发布日期:2014-09-15
  • 通讯作者: 邱 玲,E-mail:lqiu@ustc.edu.cn
  • 基金资助:

    国家科技重大专项(2010ZX03002-003-001)和国家自然科学基金(11175173)资助

An effective capacity-based hybrid service resource allocation algorithm

CAO Jiayan, QIU Ling   

  1. Personal Communications Network and Spectrum Spread Lab, University of Science and Technology of China, Hefei 230027, China
  • Received:2013-09-24 Revised:2013-12-19 Published:2014-09-15

摘要:

通过有效容量与信息论的结合,提出一种OFDMA下行网络中基于不同业务服务质量(QoS)的资源分配算法.算法以最大化系统有效容量为目标,根据实时会话业务的去耦特性,保持其有效容量不变,逐步提高文件传输业务的有效容量,至系统功率达到预设门限.仿真结果表明,在保证混合业务时延要求的基础上,系统整体有效容量得到显著提高.

关键词: 服务质量, 有效容量, 资源分配, 去耦特性

Abstract:

We propose a QoS-driven resource allocation algorithm in the downlink orthogonal frequency division multiple access (OFDMA) network by integrating information theory with the concept of effective capacity (EC). By exploring the decoupling property of real-time session,we maximizes the network EC by increasing the EC of file transfer users gradually until the system power reaches the threshold while keeping the EC of real-time session users unchanged. Simulation shows that the proposed algorithm significantly improves the overall EC under the delay constraint.

Key words: quality-of-service (QoS), effective capacity (EC), resource allocation, decoupling property

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