6LoWPAN中基于Mesh-under的中继缓存与重传机制

发布时间：2018-04-25 01:34

本文选题：适配层 + Mesh-under路由协议　；参考：《计算机工程》2017年05期

【摘要】：在基于Mesh-under路由的6Lo WPAN网络中,链路丢失的分片采用端到端的方式进行重传,从而保证数据包的可靠重组,但端到端的重传会造成较多的数据传输时延和网络能耗,降低目的端的分片重组成功率,影响网络中其他数据的有效传输。针对上述问题,提出一种基于中间节点缓存与重传分片机制,通过中间节点缓存和管理所转发分片,目的端检测到有分片丢失,则利用中间节点已缓存的分片进行重传,从而达到提高网络性能的目的。仿真结果表明,与传统的RIF_SN,RPF_SN等机制相比,该机制能耗效用值提高36.7%,网络传输时延减少28.7%,目的端重组成功率提高34.9%,明显改善网络性能。
[Abstract]:In the 6Lo WPAN network based on Mesh-under routing, the missing segments of the link are retransmitted by end-to-end mode to ensure the reliable reconfiguration of data packets, but end-to-end retransmission will cause more data transmission delay and network energy consumption. Reduce the success rate of fragment recombination, and affect the effective transmission of other data in the network. In order to solve the above problems, a mechanism based on intermediate node cache and retransmission is proposed. When the intermediate node cache and manage the forwarded segment, the destination detects that the segment is missing, and then retransmits by using the intermediate node cached slice. In order to achieve the purpose of improving network performance. The simulation results show that compared with the traditional RIFS / RPFSN mechanism, the utility value of energy consumption of this mechanism is increased by 36.7%, the transmission delay of the network is reduced by 28.775, the success rate of recombination of the destination end is increased by 34.9%, and the network performance is obviously improved.
【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(61371097) 国家物联网专项资金项目(工信部科函[2014]351号) 重庆邮电大学青年基金(A201293)
【分类号】：TN92

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