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支持WiMAX节点灵活休眠的两阶段可靠多播策略

朱艺华1,3, 周标2, 李燕君1   

  1. 1. 浙江工业大学计算机科学与技术学院, 浙江杭州 310023;
    2. 浙江工业大学信息工程学院, 浙江杭州 310023;
    3. 浙江省可视媒体智能处理技术研究重点实验室, 浙江杭州 310012
  • 收稿日期:2011-10-08 修回日期:2012-03-01 出版日期:2012-08-25
    • 作者简介:
    • 朱艺华 男,1961年生,博士,教授,博士生导师,主要研究方向无线网络协议、算法与性能分析.E-mail:yhzhu@zjut.edu.cn 周 标 男,1984年生,硕士生,主要研究方向为无线网络节能算法. 李燕君 女,1982年生,博士,副教授,主要研究方向传感器网络算法、协议及服务质量.
    • 基金资助:

    • 国家自然科学基金 (No.61070190,No.61003264); 浙江省重大科技专项重点国际合作项目 (No.2009C14033)

Two-Stage Reliable Multicasting Scheme to Support Flexible Sleeping for Mobile Stations in WiMAX

ZHU Yi-hua1,3, ZHOU Biao2, LI Yan-jun1   

  1. 1. School of Computer Science and Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, China;
    2. School of Information engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, China;
    3. Zhejiang Provincial Key Laboratory of Intelligent Processing Technology for Visual Media, Hangzhou, Zhejiang 310012, China
  • Received:2011-10-08 Revised:2012-03-01 Online:2012-08-25 Published:2012-08-25
    • Supported by:
    • National Natural Science Foundation of China (No.61070190, No.61003264); Key International Cooperation Project of Science and Technology Major Project of Zhejiang Province (No.2009C14033)

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摘要： 节能是无线网络的一个重要课题.针对IEEE 802.16e标准第2类节能模型中监听窗口长度固定会导致一些空闲移动站因得不到及时休眠而浪费能量这一不足,该文提出"两阶段可靠多播策略",让基站在第1阶段多播数据包,在第2阶段对第1阶段丢失的数据包进行网络编码并重播.该策略让移动站一旦空闲就进入休眠,实现了时延约束下数据包的可靠传递.仿真试验表明,该策略可以降低能耗,且移动站的占空比、能耗、吞吐率、丢包率等指标均优于传统的重传与确认方案.

关键词: 节能, 可靠数据传递, IEEE802.16e标准, 多播

Abstract: Power-saving is significant in wireless networks.To remedy the shortcoming in the power-saving class II of the IEEE 802.16e standard that energy is unnecessarily expended by the idle mobile stations (MSs) that are prevented from sleeping by the fixed length of the listening window,a two-stage reliable multicasting scheme (TRMS) is proposed,which lets a base station (BS) multicast during the first stage and remulticast,in the second stage,the network coded packets that contains the lost packets in the first stage.The TRMS enables MSs to sleep as soon as they become idle and realizes reliable packet delivery under delay constraint.Simulation shows that TRMS achieves power saving and outperforms the traditional retransmission and acknowledgement mechanism in terms of duty cycle,energy consumption,throughput,and packet loss rate.

Key words: power saving, reliable packet delivery, IEEE 802.16e standard, multicasting

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