Cache-Assign-Forward Architecture for Efficient Communication in Hybrid Delay-Tolerant Networks

作     者：Guo Xiaobing Liu Min 

作者机构：Institute of Computing TechnologyChinese Academy of SciencesBeijing 100190P.R.China Graduate University of the Chinese Academy of SciencesBeijing 100039P.R.China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2012年第9卷第6期

页      面：36-44页

核心收录：

学科分类：0810[工学-信息与通信工程] 12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0839[工学-网络空间安全] 08[工学] 070104[理学-应用数学] 081201[工学-计算机系统结构] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：The authors would like to thank Prof. Xu Zhiwei and the re- viewers for their detailed reviews and constructive comments, which have helped improve the quality of this paper. This work was supported by the National Key Basic Research Program of China under Grant No. 2011CB302702 the Na- tional Natural Science Foundation of China under Grants No. 61132001, No. 61120106008, No. 61070187, No. 60970133, No. 61003225 the Beijing Nova Program 

主　　题：delay tolerant networks intermittentconnectivity network architecture routing 

摘      要：Delay-Tolerant Networks (DTNs) are wireless networks that often experience temporary, even long-duration partitioning. Current DTN researches mainly focus on pure delay-tolerant networks that are extreme environments within a limited application scope. It motivates the identification of a more reasonable and valuable DTN architecture, which can be applied in a wider range of environments to achieve interoperability between some networks suffering from frequent network partitioning, and other networks provided with stable and high speed Internet access. Such hybrid delay-tolerant networks have a lot of applications in real world. A novel and practical Cache-Assign-Forward (CAF) architecture is proposed as an appropriate approach to tie together such hybrid networks to achieve an efficient and flexible data communication. Based on CAF, we enhance the existing DTN routing protocols and apply them to complex hybrid delay-tolerant networks. Simulations show that CAF can improve DTN routing performance significantly in hybrid DTN environments.