摘要： 在无源感知网络(PSN)中,基于网络编码的IPv6包传递方案大多采用固定的分片个数,传输时延较高。为此,考虑到无源传感器节点的特性,提出一种适用于PSN的IPv6包传递方案IPDS-DF。基于偏移正交相移键控调制方式的误码率模型,推导出无线链路的成功传输概率,进而得出每跳的平均传输时延、平均能耗和端到端数据包递交率。以最小化每跳的传输时延为目标,对传输路径上每个节点所采用的分片个数进行动态优化。实验结果表明,IPDS-DF的平均传输时延和能耗均低于现有IPv6包传递方案。

关键词: 无源感知网络, 网络编码, 网际协议, 物联网, 传输时延

Abstract: In Passive Sensing Network(PSN),Network Coding (NC) based IPv6 packets delivery schemes mostly use fixed number of fragments,which leads to long transmission delay.In order to reduce the transmission delay,an IPv6 Packet Delivery Scheme called IPDS-DF which can be applied to PSN is proposed considering the characteristics of PSN nodes.The Successful Transmission Probability(STP) is derived based on the BER model of Offset Quadrature Phase Shift Keying(OQPSK).Furthermore,the average transmission delay,the average energy consumption and the end-to-end Packet Delivery Ratio(PDR) are also derived.For minimizing the transmission delay,the number of fragments in each hop of the route are dynamically optimized.Experimental results indicate that the IPDS-DF outperforms the existing Reliable IPv6 Packet Delivery Scheme(RIPDS) in terms of average transmission delay and average energy consumption.

Key words: Passive Sensor Network(PSN), network coding, Internet protocol, Internet of Things(IoT), transmission delay

中图分类号: 

• TP393