摘要
针对已有蚁群优化路由算法容易出现拥塞的"枢纽"节点的缺点,提出一种改进的基于蚁群优化的Ad Hoc网络QoS路由算法。通过综合考虑节点的拥塞情况和剩余能量,引入节点健康状况概念,即节点剩余能量越多、发送队列中数据包越少,该节点越健康,利用该概念修改信息素更新规则,快速增加与健康节点相关联的连接信息素,使算法更快找到性能好、稳定性高的路径。与已有路由算法ARMAN和AODV进行仿真比较,比较结果表明,该算法在一定程度上降低了端到时延,提高了分组投递率。
Concerning the shortcomings of the existing ant colony optimization routing algorithm that congestion ＂hub＂node emerges,an improved Ad Hoc network QoS routing algorithm based on ant colony optimization algorithm was proposed.Considering the congestion and the residual energy of nodes,the concept of the health of the node was introduced that while there is more node residual energy and less packets in transmit queue,the node is healthier.The pheromone update rule was then modified,so that the pheromone on the connection associated with the healthy node increased faster,the algorithm found the path with good performance and high stability quickly.The simulation results show that the algorithm reduces the end-to-end delay and improves the packet delivery ratio.
出处
《计算机工程与设计》
北大核心
2016年第1期12-15,20,共5页
Computer Engineering and Design
基金
重庆市教委科学技术研究基金项目(KJ134101)
