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中文摘要：
针对现有无线传感器网络结构中数据流向单一且多播网络编码实施过程复杂的缺陷,提出了一种基于多根多树（MRMT）结构的多播网络编码方法。利用基于位置和链接关系的父节点选择算法构建MRMT结构,为每个节点提供多个数据流向,利用能量相关的MRMT链接矩阵快速地获取源节点到目的节点的多条能量相关的分离路径,从而使得多播编码方式可以在MRMT结构上简单地实施。实验结果显示：该方法不仅促进了能耗均衡,延长了网络寿命,而且提高了网络带宽。
英文摘要：
Aiming at shortcomings of single data flow direction in existing wireless sensor networks（ WSNs）structures and complex implementation process of multicast network coding,a multicast network coding method based on multi-root multi-tree（ MRMT） structure is proposed,in which the MRMT structure is formed according to a father node selection algorithm based on node location and link relationship for providing multiple data flow directions for each node,and multiple energy-related disjoint paths from a source node to a destination node are obtained conveniently according to an energy-related MRMT link matrix so that multicast network coding can be simply carried out in the MRMT structure. Experimental results show that this method can not only balance network energy consumption,prolong network lifetime,but also promote network bandwidth.
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