一种基于节点状态预测机制的高稳定性路由设计
发布时间:2018-01-31 08:04
本文关键词: 无线自组织网 动态拓扑 链路持续时间 拥塞可能性 稳定路由 出处:《电子与信息学报》2017年06期 论文类型:期刊论文
【摘要】:该文旨在为拓扑动态变化的无线自组织网络设计一种稳定性路由机制。首先建模分析了动态变化网络中节点间通信路径存在的条件,以及数据包在该路径上可靠传输的条件,基于以上分析提出了保证路径有效的关键指标:链路持续时间、拥塞可能性因子。接下来提出基于节点当前运动情况计算链路持续时间,以及基于缓冲区队列长度与队列长度变化率计算节点拥塞可能性因子的算法。结合链路持续时间与节点拥塞可能性等信息,该文提出了一种面向路径可靠性及稳定性综合指标的按需路由机制(ODRP-DR),并利用NS2仿真平台对该机制性能进行分析,仿真结果表明,在网络拓扑结构动态变化的情况下能有效减小数据包丢包概率,路由重建次数。
[Abstract]:The purpose of this paper is to design a stable routing mechanism for dynamically changing wireless ad hoc networks. Firstly, the conditions for the existence of communication paths between nodes in dynamically changing networks are modeled and analyzed. Based on the above analysis, the key index to ensure the path validity is proposed: link duration. Congestion probability factor. Next, the link duration is calculated based on the current motion of the node. An algorithm based on buffer queue length and queue length change rate to calculate the congestion probability factor of nodes is proposed, which combines the information of link duration and congestion probability of nodes. In this paper, an on-demand routing mechanism, ODRP-DRN, which is oriented to the comprehensive index of path reliability and stability, is proposed, and the performance of the mechanism is analyzed by using NS2 simulation platform. The probability of packet loss and the number of times of routing reconstruction can be reduced effectively when the topology of the network changes dynamically.
【作者单位】: 北京邮电大学;先进信息网络北京实验室;
【基金】:网络体系构建与融合实验室主任基金(2016BKL-NSAC-ZJ-06) 国家科技重大专项2016年项目(2016ZX03001009-003)~~
【分类号】:TN929.5
【正文快照】: 1引言无线自组织网络有快速部署、动态组网、高抗毁性等优点,在军事通信、抗震救灾、工业控制等方面具有广阔的应用前景。无线自组织网络中传统的路由协议是以跳数等信息为参数建立路由,由于 网络结构的动态变化链路断裂的情况频繁发生,此时使用该链路通信的路由随之失效,触,
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