基于能量优化ZigBee路由算法的研究

发布时间：2018-06-13 10:40

  本文选题：ZigBee网络 + ZigBee路由算法　； 参考：《东北石油大学》2017年硕士论文

【摘要】：随着无线网络技术不断的创新发展,ZigBee技术由于其可靠性高、网络容量大、成本低等特点,逐渐成为许多公司及学者研究的重点对象,被广泛应用于工业自动化、农业大棚、社会服务类设备等多个领域。在实际生产生活中,ZigBee技术受现有协议的限制,会产生网络能量消耗过快和网络节点易中断等问题,因此,修改ZigBee协议的网络层并对现有路由协议进行改进,优化网络能量,延长网络生命周期,是当前ZigBee技术的研究热点。本文通过对ZigBee网络实行逻辑分簇,簇内使用Cluster-Tree路由算法,簇间采用AODVjr路由算法;通过设定节点能量水平、剩余能量阈值和节点权值的方法,避免剩余能量较低的节点参与路由发现过程,造成节点能量消耗过快;规定只有簇首才可以广播RREQ分组,减少由于RREQ分组造成的网络冗余;在簇首轮换机制中,引入能量阈值和备用簇首两个概念,避免由于簇首能量损耗过快,造成网络分割和网络瘫痪;路由维护机制可以保证在网络运行一段时间后,及时发现并修复链路断开的情况。本文通过NS2仿真实验平台的搭建,对原有Cluster-Tree路由算法和ZBR路由算法进行对比实验,并将改进后的ZBR_FNT路由算法与原有ZBR路由算法在分组递交率、端到端时延、节点存活率和网络剩余能量,这四个方面进行了性能对比分析。仿真结果表明,改进后的ZBR_FNT路由算法可以有效减少路由开销,降低网络能量消耗,延长网络生命周期。
[Abstract]:With the continuous innovation and development of wireless network technology, ZigBee technology has become the focus of many companies and scholars because of its high reliability, large network capacity and low cost, and has been widely used in industrial automation, agricultural greenhouse, etc. Social services equipment and other areas. In practice, ZigBee technology is limited by the existing protocols, which will lead to some problems, such as too fast network energy consumption and network nodes being easily interrupted. Therefore, the network layer of ZigBee protocol is modified and the existing routing protocols are improved to optimize the network energy. Prolonging the network life cycle is the research hotspot of ZigBee technology. In this paper, we use Cluster-Tree routing algorithm, AODVjr routing algorithm for ZigBee network, set node energy level, residual energy threshold and node weight. Avoid the nodes with low residual energy to participate in the routing discovery process, resulting in the node energy consumption is too fast; only the cluster head can broadcast RREQ packets, reduce the network redundancy caused by RREQ packets; in the cluster head rotation mechanism, The concepts of energy threshold and standby cluster head are introduced to avoid the network segmentation and network paralysis due to the fast energy loss of cluster head. The routing maintenance mechanism can ensure that the link disconnection can be detected and repaired in time after the network is running for a period of time. In this paper, the NS2 simulation platform is used to compare the Cluster-Tree routing algorithm with the ZBR routing algorithm, and the improved ZBRFNT routing algorithm is compared with the original ZBR routing algorithm in packet delivery rate, end-to-end delay. The node survival rate and network residual energy are compared and analyzed in four aspects. The simulation results show that the improved ZBR _ stack FNT routing algorithm can effectively reduce the routing overhead, reduce the network energy consumption, and prolong the network life cycle.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN92
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本文编号：2013749