计算机应用 ›› 2010, Vol. 30 ›› Issue (05): 1159-1162.

• 网络与通信 • 上一篇    下一篇

自适应补偿的无线通用处理器共享模型调度算法

李佳璐1,余镇危2,张英3   

  1. 1. 中国矿业大学(北京);中国科学院计算技术研究所中科矿大联合实验室
    2. 中国矿业大学(北京)
    3. 中科院计算技术研究所
  • 收稿日期:2009-11-19 修回日期:2009-12-31 发布日期:2010-05-04 出版日期:2010-05-01
  • 通讯作者: 李佳璐

Self-adaptive compensation scheduling algorithm for wireless generalized processor sharing system

  • Received:2009-11-19 Revised:2009-12-31 Online:2010-05-04 Published:2010-05-01
  • Contact: Jia-Lu LI

摘要: 针对无线网络信道易出差错和信道容量时变性特点,以严格保证调度公平性、提高补偿平缓度和满足网络业务服务质量(QoS)为目标,在理想通用处理器共享(GPS)调度模型基础上,改进原有共享份额,定义了一种根据终端有效吞吐量动态调整的时变共享份额,重新定义了虚拟时间的概念,并形成一种自适应补偿的无线通用处理器共享模型调度算法。理论证明了该算法的公平性,实验仿真证明其时延特性、补偿平缓度和公平性均优于目前常用的无线公平服务调度算法。

关键词: 补偿机制, 吞吐量, 通用处理器共享模型, 公平性, 服务质量

Abstract: Concerning the error-prone and capacity time-varying features in wireless systems, a wireless Generalized Processor Sharing (GPS) algorithm with self-adaptive compensation was designed. It could support fairness and Quality of Service (QoS) requirement, and made compensation smoothly. This algorithm redefined virtual time and improved fair share in ideal GPS model into time-varying fair share which was dynamically adjusted by terminal good throughput. Both theoretical proof and simulation results show that this algorithm is more efficient than wireless fair service.

Key words: compensation mechanism, throughout, Generalized Processor Sharing (GPS) model, fairness, Quality of Service (QoS)