| EMSM:一种有效的无线Mesh网络流媒体组播策略 |
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| 引用本文： | 杨艺清,陈志刚,邝祝芳,邓晓衡.EMSM:一种有效的无线Mesh网络流媒体组播策略[J].小型微型计算机系统,2012,33(5):1075-1078. |
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| 作者姓名： | 杨艺清 陈志刚 邝祝芳 邓晓衡 |
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| 作者单位： | 1. 中南大学信息科学与工程学院,长沙410083;湖南师范大学,长沙410081
2. 中南大学信息科学与工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金，教育部人文社会科学研究青年基金，中央高校基本科研业务费专项资金项目 |
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| 摘 要： | 采用网络编码的方法能够提高无线Mesh网络流媒体组播的吞吐量,但也引发了不公平性和延迟增加的问题.针对这两个问题,提出一种有效的无线Mesh网络流媒体组播策略EMSM.EMSM基于用户积分值来控制信道质量好与差的用户之间的公平性,采用网络编码感知获得节点解码的能力,有效地选择信宿集,降低对信道质量好的用户带来的不公平性.在每个Mesh路由器节点采用双队列机制和有效的原始编码选取策略降低系统延迟.仿真实验结果表明我们提出的EMSM策略不仅降低了系统的延迟,而且质量好与差的信道之间的不公平性得到了很好的解决.
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| 关 键 词： | 无线Mesh网络 流媒体 网络编码 组播 |
EMSM:a Effective Multicast Streaming Mechanism in Wireless Mesh Network |
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| YANG Yi-qing
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CHEN Zhi-gang
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KUANG Zhu-fang
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DENG Xiao-heng.EMSM:a Effective Multicast Streaming Mechanism in Wireless Mesh Network[J].Mini-micro Systems,2012,33(5):1075-1078. |
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| Authors: | YANG Yi-qing CHEN Zhi-gang KUANG Zhu-fang DENG Xiao-heng |
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| Affiliation: | 1(School of Information Science and Engineering Central South University,Changsha 410083,China) 2(Hunan Normal University,Changsha 410081,China) |
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| Abstract: | Network coding is a method that promises to achieve high throughput for multicast streaming in wireless mesh network.However,it comes with two problem: delay and unfairness.We aim at solving this two problem.A effective multicast streaming mechanism in wireless mesh network(EMSM) is presented in this paper.EMSM control the unfairness baesd on the credit of node,and apperceives the decode capability of node,and selects destination set effectively.The unfairness of the node who has good channel is depressed.The system-wide delay is reduced by dual queue mechanism and native packets selecting mechanism in router.Simulation results show that the proposed scheme can achieve low delay,and the unfairness of tht good and bad channel is solving. |
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| Keywords: | wireless mesh network streaming multicast network codeing |
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