| Ad Hoc网络中支持拥塞控制的速率自适应协议 |
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| 引用本文： | 夏海轮,丁炜. Ad Hoc网络中支持拥塞控制的速率自适应协议[J]. 吉林大学学报(信息科学版), 2007, 25(3): 292-299 |
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| 作者姓名： | 夏海轮 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,北京,100876;北京邮电大学,宽带通信网络实验室,北京,100876 |
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| 基金项目： | 国家自然科学基金资助项目(60372101);;高等学校博士学科点专项科研基金资助项目(20040013010) |
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| 摘 要： | Ad Hoc网络中节点需要竞争共享信道,容易使部分节点发生拥塞而丢弃部分分组,造成带宽资源浪费。为了更有效地利用Ad Hoc网络物理层的多速率能力,提出了一种支持拥塞控制的速率自适应协议,引入了可变发送窗口机制,接收节点根据信道质量选择可用的最高传输速率,并根据其队列拥塞程度控制发送端节点的发送窗口,发送节点按照发送窗口的大小连续发送多个数据帧。仿真结果表明,该协议能够充分利用信道条件,在网络重负载的条件下,饱和吞吐量提高80%,并能够调整拥塞节点的分组进出速率,有效地控制了网络拥塞。
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| 关 键 词： | 速率自适应 多速率 拥塞控制 Ad Hoc网络 |
| 文章编号： | 1671-5896（2007）03-0292-08 |
| 收稿时间： | 2007-03-08 |
| 修稿时间： | 2007-03-08 |
Auto Rate Protocol with Congestion Control for Multi-Hop Ad Hoc Networks |
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| XIA Hai-lun,DING Wei. Auto Rate Protocol with Congestion Control for Multi-Hop Ad Hoc Networks[J]. Journal of Jilin University:Information Sci Ed, 2007, 25(3): 292-299 |
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| Authors: | XIA Hai-lun DING Wei |
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| Affiliation: | Laboratory of Broadband Communication Networks;Beijing University of Posts and Telecommunications;Beijing 100876;China |
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| Abstract: | Nodes in wireless multi-hop Ad Hoc networks need to contend for the shared wireless channel,which could result in congestions and waste the wireless bandwidth resource.To utilize the multirate capability of Ad Hoc physical layer more efficiently,an ACC-AR(Adaptive Congestion Control-Auto Rate) protocol is proposed with dynamic transmission window mechanism.The receiver sets the highest feasible transmission rate allowed by the channel condition,and controls the sender's transmission window according to its ... |
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| Keywords: | rate adaptation multirate congestion control Ad Hoc network |
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