移动自组织网中节能路由协议的研究

发布时间：2018-07-05 02:33

本文选题：移动自组织网 + 节能　；参考：《辽宁大学》2017年硕士论文

【摘要】：由于移动自组织网络中节点的电量有限,节点会随着电量消尽而退出网络,从而影响网络的性能,因此延长节点寿命成为移动自组织网节能研究的热点。现有节能研究主要集中在解决传输一个分组总电量消耗最小化和网络寿命最大化的节点耗电均衡问题。但是,只追求总电量消耗最少的路由评价方式往往会导致耗电量较低节点负载过重,且总耗电最小并未从节点的角度节省电量;只追求均衡节点耗电量会造成节点电量的浪费;少数协议单纯的将绝对最小化耗电总量与均衡耗电相结合,但都是从全局的角度而未从局部角度为延长节点寿命发挥节点自身的节能自主性。面向节点发射功率固定的网络,本文提出一种基于节点电池放电特性节能的路由协议RBAODV,该协议根据电池放电特性将电池剩余电量划分为3个不同等级,进而采取各自相应的评估策略,使高剩余电量节点积极参与到协助转发分组中来而提高路由评价值,而低剩余电量节点则为保护自身电量降低路由评价值,路由选择时通过综合考虑跳数和路径上各节点剩余电量评价值来决定路由。实验结果显示,与AODV协议性能相比,RBAODV协议能有效避免剩余电量过低节点,从而延长网络寿命。面向节点发射功率可调的网络,基于节点转发一个数据分组耗电量最小的角度,由于现有节能协议在网络节点转发路由控制分组时并没有考虑节点剩余电量。本文提出一种改进方案RBTBPR协议,即在中间节点转发路由请求包时优先考虑该路由请求包所经路径的剩余寿命较多;其次考虑上一跳节点转发该路由请求包耗电最少;再考虑该请求包所经路径的累积耗电总量最少;最后考虑该请求包所经路径的跳数最少。该协议并对节点在当前剩余电量值下剩余寿命的估算方法进行了改进,提出只关注节点当前剩余电量与节点已运行的时间,即节点剩余寿命为当前剩余电量除以已消耗电量与已运行时间的比值。实验结果显示,与TBPR协议、MCPR协议相比,RBTBPR协议能延长节点的网络寿命。
[Abstract]:Due to the limited power of nodes in mobile ad hoc networks, the nodes will withdraw from the network with the loss of electricity, thus affecting the performance of the network. Therefore, prolonging the lifetime of nodes has become a hot topic in the research of energy conservation in mobile ad hoc networks. The existing energy conservation research focuses on solving the problem of node power equalization in which the total power consumption of a packet is minimized and the network lifetime is maximized. However, the route evaluation method which only pursues the least consumption of total electricity consumption often leads to the low power consumption of nodes, and the minimum total power consumption does not save the power from the point of view of the nodes, and the pursuit of balancing the power consumption of the nodes will lead to the waste of the power consumption of the nodes. A few protocols simply combine absolute minimization of total power consumption with balanced power consumption, but all of them are from a global point of view, but not from a local point of view to extend node life to give full play to the node's own energy saving autonomy. In this paper, a routing protocol RBAODV, which is based on node battery discharge characteristics and energy saving, is proposed for networks with fixed node-emitting power. According to the characteristics of battery discharge, the residual battery power is divided into three different classes. Then the corresponding evaluation strategies are adopted to make the high residual electricity nodes actively participate in the assisted forwarding packets to improve the routing evaluation value, while the low residual electricity level node reduces the routing evaluation value to protect its own power. Routing is determined by considering the number of hops and the evaluation value of the residual power of each node in the route. The experimental results show that compared with the performance of AODV protocol, the RBAODV protocol can effectively avoid the low residual power and prolong the network life. Based on the minimum power consumption of a data packet transmitted by a node, the existing energy saving protocols do not consider the residual power of the node when forwarding the routing control packet to the network node. In this paper, an improved RBTBPR protocol is proposed, in which priority is given to the remaining lifetime of the routing request packet when the intermediate node forwards the routing request packet, and the last hop node transmits the routing request packet with the least power consumption. Then consider that the total cumulative power consumption of the request packet is the least, and the number of hops of the request packet is the least. The protocol also improves the method of estimating the residual life of the node under the current residual electricity value, and proposes to focus only on the current residual power of the node and the running time of the node. That is, the residual life of the node is the ratio of the current residual power divided by the consumed power to the running time. Experimental results show that RBTBPR protocol can prolong the network lifetime of nodes compared with TBPR protocol and MCPR protocol.
【学位授予单位】：辽宁大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

【参考文献】