NDN网络中基于路径上缓存的多路径路由机制  

In-path caching based multipath routing in named data networking

作　　者：黄胜[1] 姜良浩[1] 郝言明[1] 刘四军[1] 何玉杰[1] 

机构地区：[1]重庆邮电大学光通信与网络重点实验室,重庆400065

出　　处：《计算机工程与设计》2017年第12期3191-3196,共6页Computer Engineering and Design

基　　金：国家自然科学基金项目(61371096);重庆市基础与前沿研究计划基金项目(cstc2015jcyjA40015)

摘　　要：为充分利用命名数据网络内缓存的内容,提出一种基于路径上缓存的多路径路由机制MRBRC。边缘节点通过扩展的转发信息表,描述不同内容在每条路径上请求热度的不同(即路径上缓存副本存在的可能性不同),为每个内容条目维护多条可用路径。在下一次请求到达时,路由器根据转发信息表中的记录实现有目的性的转发。仿真结果表明,该策略能够在一定程度上提升请求在网内节点的命中率,减小时延,降低请求命中的平均跳数。To make full use of the contents cached in the named data networking,a multipath routing mechanism based on the routers' cache(MRBRC)was proposed.Edge nodes described different heat contents of different requests on each route by the extended forwarding information base,namely the possibility of the existence of the duplicate on different paths.Multiple paths available for each content item were maintained.When the request arrived at next time,the routers forwarded the request according to the records of the forwarding table to achieve a purposeful forwarding.Results of simulation show that the proposed strategy can efficiently improve the in-network hit rate of the request,decrease the delay and the average hop count of the request hit.

关 键 词：命名数据网络 多路径转发 路由 缓存 有目的性的转发 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]