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1. 浙江工业大学计算机学科技术学院 杭州 310023
2. 浙江工业大学机械工程学院 杭州 310023
3. 浙江万里学院电子信息学院 宁波 315100
[ "邵鹏飞,男,浙江工业大学博士生,浙江万里学院副教授,主要研究方向为物联网中的可靠传输和信息融合。" ]
[ "赵燕伟,女,浙江工业大学博士生导师、教授,主要研究方向为先进制造技术、现代物流系统智能配送与优化调度、网络环境下的数字制造技术等。" ]
[ "吴耀辉,男,浙江万里学院讲师,主要研究方向为无线通信、OFDM系统资源分配。" ]
[ "姚信威,男,博士,浙江工业大学副教授,主要研究方向为无线传感网络。" ]
网络出版日期:2015-04,
纸质出版日期:2015-04-15
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邵鹏飞, 赵燕伟, 吴耀辉, 等. 多播网络中基于机会网络编码改进的重传方法[J]. 电信科学, 2015,31(4):98-105.
Pengfei Shao, Yanwei Zhao, Yaohui Wu, et al. An Improved Retransmission Approacb Based on Opportunistic Network Coding in Multicast Networks[J]. Telecommunications science, 2015, 31(4): 98-105.
邵鹏飞, 赵燕伟, 吴耀辉, 等. 多播网络中基于机会网络编码改进的重传方法[J]. 电信科学, 2015,31(4):98-105. DOI: 10.11959/j.issn.1000-0801.2015089.
Pengfei Shao, Yanwei Zhao, Yaohui Wu, et al. An Improved Retransmission Approacb Based on Opportunistic Network Coding in Multicast Networks[J]. Telecommunications science, 2015, 31(4): 98-105. DOI: 10.11959/j.issn.1000-0801.2015089.
针对高链路分组丢失率下HLAR(hash lookup assisted retransmission)等重传方法存在的编码率低、算法性能下降等缺陷,提出了一种改进的基于机会网络编码的广播重传方法。该方法根据接收节点反馈的丢失分组情况,不仅能够通过散列查找快速选择丢失分组组合进行编码重传,并优先重传能让最多接收节点恢复其丢失分组的单个重传分组,而且基于邻域关联充分挖掘编码机会,允许节点从多个重传分组中恢复丢失分组,从而在保持较低算法复杂度的情况下,有效地提高重传性能。仿真结果表明,相对于已有算法,该方法能有效减少重传次数,提高传输效率。
A novel opportunistic-network-coding-based retransmission approach was proposed.According to the feedback on packet loss from the receiving nodes
this novel approach can not only efficiently select a combination of lost packets through Hash lookup for packet retransmission
but also can ensure priority retransmission making up to a single combination retransmission packet which can maximize the number of receiving nodes for recovering their lost packets.Furthermore
the proposed approach fully exploits the coding opportunity based on neighborhood association
and allows the receiving nodes to recover their lost packets from multiple retransmission packets.The simulation results show that this novel approach can effectively reduce the number of retransmissions to improve the transmission efficiency with respect to the existing algorithms.
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