机会网络中节点占空比的研究

发布时间：2018-03-29 20:14

本文选题：机会网络　切入点：接触间隔时间　出处：《内蒙古大学》2017年硕士论文

【摘要】：在机会网络中移动终端设备能量受限的特点是影响机会网络应用大规模普及的重要因素之一。如何以能量有效利用的方式完成协作感知任务,达到较低的消息传输延迟和较好的消息投递率,成为十分重要的研究内容。本文假设机会网络中移动节点间的接触间隔时间服从指数分布,网络模型为同构。本文在保证消息传输延迟和消息投递率的条件下求出了一个最合理的节点占空比,并且利用求出的节点占空比设计了一种节点占空比节能机制(Energy-Efficient Architecture of Low Duty Cycle,EEALDC)。本文对EEALD 节能机制做了理论分析与实验评估。实验结果说明本文提出的节点占空比求解模型是准确的,并且与Biondi E提出的节能机制相比EEALDC节能机制可以在保障一定的消息传输成功率和延迟的条件下保存更多的机会网络中移动设备电能,获得更长的网络寿命。此外,针对网络模型为异构的情况,本文针对不同的消息转发策略,在给定期望的消息传输延迟的条件下求出了更加合理的节点占空比。本文对求出的各种路由策略下的节点占空比进行了理论分析和对比实验,实验结果发现本文提出的节点占空比求解模型是准确的,该模型求出的节点占空比可以在保障一定的网络性能条件下有效的保存机会网络中移动设备的电能。
[Abstract]:The energy limitation of mobile terminal devices in opportunistic networks is one of the important factors that affect the large-scale popularity of opportunistic network applications. It is very important to achieve lower message transmission delay and better message delivery rate. In this paper, we assume that the contact interval between mobile nodes in opportunistic networks is exponentially distributed. The network model is isomorphic. Under the condition of guaranteeing message transmission delay and message delivery rate, a most reasonable duty cycle of nodes is obtained in this paper. Furthermore, an energy-saving mechanism of node duty cycle Architecture of Low Duty cycle is designed by using the calculated node duty cycle. In this paper, the theoretical analysis and experimental evaluation of the EEALD energy-saving mechanism are carried out. The experimental results show that the proposed model is accurate. Compared with the energy saving mechanism proposed by Biondi E, the EEALDC energy saving mechanism can save more power of mobile devices in the network under the condition of guaranteeing a certain success rate and delay of message transmission. In addition, it can obtain a longer network life. In view of the heterogeneous network model, this paper aims at different message forwarding strategies. A more reasonable duty cycle is obtained under the condition that the expected message transmission delay is given. In this paper, the theoretical analysis and comparative experiment of the duty cycle of the nodes under various routing strategies are carried out. The experimental results show that the model proposed in this paper is accurate and can effectively save the power of mobile devices in the opportunistic network under certain network performance conditions.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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