【摘要】 针对具有间歇连接特性的移动Ad Hoc网络,提出一种具有情景感知的自适应路由协议ARPBC(adaptive routing protocol based on context-aware)。计算出节点情景信息效用函数,采用预测技术求出效用函数的预测值,结合多准则决策理论,计算出节点的传输概率值。节点移动和随机性会导致网络"孤岛"的形成,此时启用异步传输方式,即选择具有最高传输概率值的节点作为携带数据分组的中继节点,当中继节点移动到目的节点连通域时,以同步传输方式将数据分组发送给目的节点。仿真实验结果表明,该协议能够有效提高数据传输成功率,降低端到端时延,节省网络带宽。更多还原

【Abstract】 An adaptive routing protocol based on context-aware(ARPBC)was presented according to the intermittently connected mobile Ad Hoc networks.At first,the utility function of context was calculated for each node,and then the predicted value of utility function was determined by using the prediction technology.Combining the multi-criteria decision theory,the estimated transmission probability was worked out.When an island came into being because of the node’s randomly moving character,an asynchronous delivery was adopted,in which the node with the highest delivery probability was selected as the relay node to carry message.When the mobile node moved to the destination,it sent the messages to receivers by synchronous transmission.Simulation results show that ARPBC can improve the data transfer rate,reduce the end-to-end delay,and save the network bandwidth effectively.更多还原