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根据延迟容忍网络中的数据活跃程度与其扩散速度直接相关的规律,提出了数据活跃程度感知的延迟容忍网络数据转发机制.根据数据平均投递周期,节点以分布式方式衡量数据的活跃程度,并在此基础上预测数据期望投递跳数,进而控制数据复制转发的扩散程度.仿真结果表明该机制能够大幅度改善数据成功投递率和网络平均延迟.
According to the law of delay-tolerant network’s data activity and its diffusion speed, a delay-tolerant network data forwarding mechanism based on perceived data activity is proposed.According to the data delivery cycle, nodes measure the activity of data in a distributed way, Based on this, the number of hops expected to be delivered is predicted, and then the spread of data replication and forwarding is controlled.The simulation results show that this mechanism can greatly improve the data delivery success rate and average network delay.