6LoWPAN中基于Mesh-under的备用缓存机制

发布时间：2018-07-01 16:02

  本文选题：IPv低功耗无线个域网 + Mesh-under　； 参考：《系统工程与电子技术》2017年07期

【摘要】：在基于Mesh-under的IPv6低功耗无线个域网(IPv6over low-power wireless personal area networks,6LoWPAN)中,针对传输路径上中间节点重传缓存溢出导致重传数据分片丢失,造成网络性能下降等问题,提出一种基于Mesh-under的备用缓存机制。本文所提机制根据传输路径上各节点重传缓存使用情况及数据分片剩余跳数等信息,设置动态重传缓存门限,并为超过该门限的节点从其邻居节点中挑选合适的备用缓存节点,从而完成数据分片的缓存与重传过程,达到均衡使用各节点重传缓存的目的。结果表明,所提机制能够有效避免重传缓存溢出,减小网络能耗,同时进一步提高目的端重组成功率。
[Abstract]:In IPv6 low power low-power wireless personal area networks 6LoWPAN based on Mesh-under, a backup buffer mechanism based on Mesh-under is proposed to solve the problems of retransmission data fragmentation loss caused by intermediate node buffer overflow on transmission path and network performance degradation. The mechanism proposed in this paper sets the dynamic retransmission buffer threshold according to the retransmission cache usage of each node on the transmission path and the number of remaining hops of the data fragments, and selects the appropriate standby buffer node from the neighbor node for the node exceeding the threshold. Thus, the process of data partition cache and retransmission is completed, and the retransmission cache of each node is used equitably. The results show that the proposed mechanism can effectively avoid retransmission buffer overflow, reduce network energy consumption, and further improve the success rate of target end reorganization.
【作者单位】： 重庆邮电大学光通信与网络重点实验室;
【基金】：国家自然科学基金(61271261,61371097) 重庆市青年科技人才培养计划(CSTC2014KJRC-QNRC40001) 重庆邮电大学青年自然科学基金(A201293)资助课题
【分类号】：TN92
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本文编号：2088309