延迟容忍网络中多Ferry路由设计及改进  

Route design for multiple ferries and improvement in delay tolerant network

作　　者：章韵[1] 王磊[1] 

机构地区：[1]南京邮电大学计算机学院,江苏南京210003

出　　处：《计算机工程与设计》2009年第24期5605-5608,共4页Computer Engineering and Design

摘　　要：针对延迟容忍网络多Ferry路由设计方案MRT-Tree中普通节点的缓存和能量消耗过多的不足之处,提出了星型拓扑多Ferry路由设计MRT-Star。新设计使用专用的缓存装置来取代普通节点作为转发节点,并改变了普通节点的分配方式和Ferry节点的交互方式。最后,通过数学计算和数学分析表明MRT-Star在不额外消耗普通节点的缓存和能量的同时,还能获得比MRT-Tree较低的数据传输延迟。A new route design for multiple ferries named MRT-Star is proposed,which aimed at the shortcome of MRT-tree in delay tole-rant network that cache and energy of regular nodes be consumed too much additionally.The design used a special cache device to replace the regular node as a forwarding node and changed the way of distribution of regular nodes and the way of interactive of ferries.The mathematical calculations and mathematical analysis show that the data transmission delay of MRT-Star is lower than MRT-Tree while there is no consumption of cache and energy of regular nodes.

关 键 词：延迟容忍网络 数据传输延迟 多Ferry路由设计 树型拓扑 星型拓扑 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]