摘要
由于无线自组网具有动态拓扑、有限带宽、终端受限、存在单向信道等特点,对路由协议提出了许多具体而严格的要求。结合工程项目实际,面向对投递率要求较高的数据业务,在仿真和分析中发现底层支持对网络层丢包率有很大影响,对此问题进行了深入分析和研究,在已有算法的基础上提出了一种跨层路由算法。算法结合底层链路质量信息来建立和选择路由,仿真证明该跨层路由算法提高了数据包的投递率,在时延和开销上也有所改善。算法适用于低速移动、网络中通信连接对较大的场景。
Since wireless ad hoc network has dynamic topology, limited bandwidth, limited terminals, and a one-way channel, etc., a number of specific and strict demands on routing protocol are put forward. Combined with the project in the laboratory, for the higher demand on rate delivery of data services, during the process of simulation and analysis, found the underlying support has great influence on packet loss rate of the network layer. In-depth analysis and research are carried out on this issue, paper proposes a routing algorithm of cross-layer design based on the existing algorithms. The algorithm is combined with the underlying link quality information to build and select routing, and simulation shows that the cross-layer design routing algorithm improves the packet delivery rate, also the latency and overhead are slightly improved. This algorithm is suitable for low-speed mobile environment, and the scene with a larger number of communication connection pair in the network.
作者
沈杰
张键
SHEN Jie;ZHANG Jian(Systems Engineering Research Institute,Beijing 100094 China)
出处
《自动化技术与应用》
2019年第4期92-97,共6页
Techniques of Automation and Applications
关键词
无线自组网
路由算法
跨层路由
链路质量
Wireless self-organized Network
routing algorithm
cross-layer routing
link quality
