无线网络环境下命名数据网络移动性解决方案

A Mobility Solution of Named Data Networking in Wireless Network

通过数据消费者驱动的命名数据网络(NDN)可以实现数据的高效可靠传递,然而NDN中兴趣包的广播机制使得其不适用于带宽受限的无线网络环境;此外,针对数据提供者发生移动所带来的问题,NDN也没有很好的解决方案。通过分析无线网络环境下NDN通信流程中存在的问题,提出了一种无线网络分层隔离方案,通过给内容分配路由标识,实现了数据提供者移动时兴趣包的正确路由,避免了兴趣包广播及重传对无线网络带宽资源的浪费。

The Named Data Networking（ NDN） drived by data consumer can support data transmission efficiently and reliably.However,the broadcast mechanism of Interest packet in NDN is not suitable to bandwidth-limited wireless network. Besides,NDN can＇t solve the mobility of data provider effectively. By analyzing NDN communication mechanism in wireless network,this paper proposes a layered routing scheme. By assigning content a routing label,the exact routing of interest packet is implemented when data provider moves. This scheme avoids wireless network bandwidth resource wasting resulting from interest packet broadcast and retransmission.