| Ad hoc网络中一种新的自适应退避算法 |
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| 引用本文： | 夏海轮,曾志民,丁炜. Ad hoc网络中一种新的自适应退避算法[J]. 吉林大学学报(工学版), 2009, 39(5): 1369-1373 |
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| 作者姓名： | 夏海轮 曾志民 丁炜 |
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| 作者单位： | 北京邮电大学信息与通信工程学院,北京,100876;北京邮电大学信息与通信工程学院,北京,100876;北京邮电大学信息与通信工程学院,北京,100876 |
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| 基金项目： | 国家自然科学基金项目(60772110);;高等学校博士学科点专项科研基金项目(20040013010) |
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| 摘 要： | 通过分析无线多跳Ad hoc网络中节点由于竞争共享信道引起的拥塞问题,首次提出了一种新的基于接收方的自适应退避算法-RBAB(Receiver-based adaptive backoff)。该算法中,发送方节点根据接收方节点反馈的队列拥塞程度控制竞争窗口的变化,改变节点对信道的竞争能力,从而在总体上控制节点的分组发送速率,达到拥塞控制的效果。仿真结果表明,该算法能够显著提高网络的饱和吞吐量,在MAC层有效控制了网络的拥塞。
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| 关 键 词： | 通信技术 Ad hoc网络 退避算法 自适应退避 拥塞控制 |
Novel adaptive backoff algorithm in wireless Ad hoc networks |
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| XIA Hai-lun,ZENG Zhi-min,DING Wei. Novel adaptive backoff algorithm in wireless Ad hoc networks[J]. Journal of Jilin University:Eng and Technol Ed, 2009, 39(5): 1369-1373 |
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| Authors: | XIA Hai-lun ZENG Zhi-min DING Wei |
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| Affiliation: | School of Information & Communication Engineering;Beijing University of Posts and Telecommunications;Beijing 100876;China |
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| Abstract: | The congestion problem due to contending for the shared wireless in multi-hop Ad hoc networks is investigated.Then a novel Receiver-Based Adaptive Backoff(RBAB) algorithm is proposed.In this algorithm,the sender adjusts its contention window according to the feedback of receiver's congestion level,changes the nodes' channel-contending ability and packet sending rate on the whole,thus,achieves the control of the congestion problem.Simulation results show that the RBAB algorithm can remarkably increase the ne... |
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| Keywords: | communication Ad hoc network backoff algorithm adaptive backoff congestion control |
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