基于公平副本分配的DTN资源管理机制

A DTN Resource Management Mechanism Based on Fair Replica Allocation

容迟容断网络具有无中心化的特点,使得对其节点的监控和管理存在天然的困难。本文介绍了当前容迟容断网络路由算法的主要研究成果,如较早的基于洪泛的喷射路由等。接着介绍了最新的基于节点社会性的路由。随后分析了这两种路由的优缺点,包括引入节点社会性后带来的负载不均衡和资源分配不公问题。进一步,通过分析人类活动轨迹数据发现节点社会属性的相对稳定。利用这种稳定性提出了一种公平分配资源机制,使得各节点可以合理地共享网络资源。最后验证了该机制的有效性和实用性。

DTN（Delay-Tolerant Networking） is a kind of decentralized network making the monitoring and management of node dififcult. In this paper, the main achievements of DTN research are introduced such as early lfooding based routing. Routing methods based on social behaviors of nodes emerge recent years. The paper analyses the advantages and disadvantages of both lfooding and social routing. Then the stability of human movement are abstract from some real world movement tracks, which brings the stability of routes in social DTN routing. A mechanism based on this stability is raised to make the resource allocation between network users fair. Finally, we verify the feasibility and effectiveness of the mechanism by simulating.