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多信道无线Mesh网络公平带宽分配算法 被引量:3

Fair Bandwidth Allocation Algorithm for Multi-channel Wireless Mesh Network
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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。 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.
出处 《计算机工程》 CAS CSCD 2012年第15期66-69,共4页 Computer Engineering
基金 上海理工大学光电学院教师创新能力建设基金资助项目(GDCX-Y-1211)
关键词 多信道 无线MESH网络 带宽分配 公平性 调度算法 多跳 multi-channel Wireless Mesh Network(WMN) bandwidth allocation fairness schedule algorithm multi-hop
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同被引文献28

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