| Ad hoc网络中一种新的退避算法 |
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| 引用本文： | 夏海轮,许航天,曾志民,丁炜.Ad hoc网络中一种新的退避算法[J].电子科技大学学报(社会科学版),2008(4). |
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| 作者姓名： | 夏海轮 许航天 曾志民 丁炜 |
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| 作者单位： | 北京邮电大学宽带通信网络实验室; |
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| 基金项目： | 国家自然科学基金(60372101) |
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| 摘 要： | 为了提高Ad hoc网络中高等级节点的接入能力,提出了一种新的二进制负指数退避算法,该算法中高等级节点在分组发送成功时将竞争窗口设为普通节点的最小竞争窗口,在发生碰撞时竞争窗口随着退避次数的增加而呈负指数规律减小。仿真结果表明,该算法能够显著提高高等级节点的接入能力,提高了其业务吞吐量,并降低了端到端传输时延。
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| 关 键 词： | 无线自组网 退避算法 二进制负指数退避 竞争窗口 |
A Novel Backoff Algorithm for Ad hoc Networks |
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| XIA Hai-lun,XU Hang-tian,ZENG Zhi-min, DING Wei.A Novel Backoff Algorithm for Ad hoc Networks[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2008(4). |
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| Authors: | XIA Hai-lun XU Hang-tian ZENG Zhi-min DING Wei |
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| Institution: | XIA Hai-lun,XU Hang-tian,ZENG Zhi-min,, DING Wei (Broadb, Communication Networks Laboratory,Beijing University of Posts , Telecommunications Haidian Beijing 100876) |
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| Abstract: | In order to increase the access ability of high-level node in wireless ad hoc network, a novel binary negative exponential backoff (BNEB) algorithm is proposed. In this algorithm, the high-level node sets its contention window (CW) to the minimum CW of normal nodes after successful transmission, and reduces its CW as times of retransmission increased. The simulation results show that the BNEB algorithm can remarkably increase the access ability of high-level node and reduce the end-to-end delay. |
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| Keywords: | Ad hoc backoff algorithm binary negative exponential backoff contention window |
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