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| 多信道无线Mesh网络公平带宽分配算法 | |
| 引用本文： | 苏凡军,房慧聪,徐建,邬春学.多信道无线Mesh网络公平带宽分配算法[J].计算机工程,2012,38(15):66-69. |
| 作者姓名： | 苏凡军 房慧聪 徐建 邬春学 |
| 作者单位： | 1. 上海理工大学光电信息与计算机工程学院,上海,200093 2. 华东师范大学心理与认知科学学院,上海,200062 3. 杭州电子科技大学计算机学院,杭州,310018 |
| 基金项目： | 上海理工大学光电学院教师创新能力建设基金资助项目 |
| 摘 要： | 针对基于IEEE802.11的无线Mesh网络(WMN)在按多跳方式转发数据时存在带宽分配不公平的问题，提出一种改进算法DBAS。通过检测子节点包含的活动终端数量，计算分配指数并发送给子节点，使其能根据分配指数调整介质访问控制层的竞争窗口参数。在子节点向父节点发送数据时，采用加权轮询调度算法进一步保证带宽分配的公平性。NS2实验结果验证该算法的有效性。 |
| 关 键 词： | 多信道 无线Mesh网络 带宽分配 公平性 调度算法 多跳 |
| 收稿时间： | 2011-11-14 |
Fair Bandwidth Allocation Algorithm for Multi-channel Wireless Mesh Network |
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| SU Fan-jun , FANG Hui-cong , XU Jian , WU Chun-xue.Fair Bandwidth Allocation Algorithm for Multi-channel Wireless Mesh Network[J].Computer Engineering,2012,38(15):66-69. | |
| Authors: | SU Fan-jun FANG Hui-cong XU Jian WU Chun-xue |
| Affiliation: | 1(1.School of Optical-electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;2.School of Psychology and Cognitive Science,East China Normal University,Shanghai 200062,China;3.School of Computer Science and Technology,Hangzhou Dianzi University,Hangzhou 310018,China) |
| Abstract: | Aiming at the unfair bandwidth allocation problem in Wireless Mesh Network(WMN) based on IEEE802.11 when transferring data through multi-hop,this paper proposes an improved bandwidth allocation algorithm——Detection-based Adjustment and Schedule(DBAS).DBAS detects the active end node numbers of its child nodes to calculate the allocation indexes,and then sends them to its child nodes.A child node adjusts the size of contention window of Media Access Control(MAC) level after receiving the allocation index.In addition,a modified round robin schedule algorithm is adopted when a node sends packets to its father node.NS2 experimental result verifies the effectiveness of the proposed algorithm. |
| Keywords: | multi-channel Wireless Mesh Network(WMN) bandwidth allocation fairness schedule algorithm multi-hop |
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