为提升命名数据移动自组织网络服务质量,针对其拓扑动态时变特性,创新提出了一种基于节点活跃度的包转发策略。本策略周期性计算网络节点活跃度,利用高活跃度节点进行兴趣包和数据包的转发(和存储)。基于NS3/ndnSIM开源框架开发了仿真程序,将此策略与默认洪泛及典型的最短路径路由策略进行了性能对比测试。实验结果表明,在中高动态MANET场景中,基于节点活跃度的包转发策略能够依靠合理增加节点存储消耗量,保持较低的平均请求时延,取得更优的请求响应率、消耗更少的网络带宽。

Aiming to enhancing the QoS of named data mobile ad hoc network (NDMANET), this paper derived an innovative node activeness based packet forwarding (NAPF) strategy dealing with the performance impact caused by MANET’s time varying topology. The proposed NAPE strategy periodically calculates and updates the activeness of all networking nodes, and utilizes nodes of higher activeness to forward (and store) the received Interest and Data packets. A simulation program was developed on the basis of the open sourced NS3/ndnSIM framework. Comparative performance evaluation experiments have been carried out for the default flooding, the shortest path routing as well as the proposed NAPF strategies. The experimental results indicate that, in the medium and high dynamic MANET scenarios, by reasonably increasing the storage consumption on node, the NAPF strategy can keep the average request delay relatively low, can achieve higher request responding ratio, and can consume much less network bandwidth.

TP393.1

国家自然科学基金资助项目(No.61402085,No.61872051)。