基于人类移动模式的机会网络数据分发策略

摘要

Aiming at the low dam-dissemination efficiency of opportunistic networks, a novel data dissemination policy based on human mobility patterns (HMP) is proposed. The policy chooses “destination-matching” (DM), “destination-arriving time” (DAT), and “network hops” (NH) as its three key factors in data dissemination, and regards the general evaluation of the three factors as the criterion for selecting relay nodes, and the criterion is used for data forward in opportunistic networks. It reduces efficiently the network tratfic and resource consumption caused by useless data dissemination of multiple hops through the design of selecting relay nodes, and builds the data dissemination model. Also, it analyzes the upper and lower bounds of the data dissemination range. The simulation results show that the new policy improves the network QoS performance and reduces the data end to end delay and network resource consumption.%针对机会网络数据分发效率低的问题,提出了一种新的基于人类移动模式(HMP)的机会网络数据分发策略:选择目标地址匹配(DM)标点、目标地址到达时间(DAT)、网络跳数(NH)这三个数据作为分发策略中的关键因素,把三者的综合评判作为中继节点选取标准并将其应用于机会网络数据转发;有效地降低无用多跳数据转发造成的网络拥塞和资源耗费;建立HMP数据分发模型并分析HMP数据传播范围的上下界.仿真实验结果表明,上述分发策略能够有效地提高机会网络的服务质量,同时也能够降低数据端到端延迟与网络开销.