Approximate Models for CCN Data Transfer in General Topology  

作　　者：WANG Guoqing HUANG Tao LIU Jiang CHEN Jianya LIU Yunjie 

机构地区：[1]State Key Laboratory of Networking and Switching Technology. Beijing University of Posts and Telecommunications, Beijing 100876, China.

出　　处：《China Communications》2014年第7期40-47,共8页中国通信（英文版）

基　　金：supported by the National Basic Research Program(973) of China(No. 2012CB315801);the National Natural Science Fund(No.61302089);the fundamental research funds for the Central Universities(No. 2013RC0113)

摘　　要：Recently,Content-Centric Networking(CCN) has been paid more and more attention.The modeling of CCN as an important research point is the foundation of the architecture.The past work of cache network modeling always assumes the virtual round trip time(VRTT) is zero for simplicity.However,this assumption isn't practical and results in model error especially in CCN.CCN's router can aggregate the content requests during the VRTT to avoid content delivery repeatedly.Thus,to modeling CCN data transfer,as well as understanding how it should be managed,the VRTT shouldn't be ignored.In this paper,we model the data transfer in CCN,and propose a multi-cache with aggregation approximation(MCAA)algorithm to get the content miss rate and VRTT at each router.Simulation results show the validity of our MCAA algorithm.Recently,Content-Centric Networking（CCN） has been paid more and more attention.The modeling of CCN as an important research point is the foundation of the architecture.The past work of cache network modeling always assumes the virtual round trip time（VRTT） is zero for simplicity.However,this assumption isn＇t practical and results in model error especially in CCN.CCN＇s router can aggregate the content requests during the VRTT to avoid content delivery repeatedly.Thus,to modeling CCN data transfer,as well as understanding how it should be managed,the VRTT shouldn＇t be ignored.In this paper,we model the data transfer in CCN,and propose a multi-cache with aggregation approximation（MCAA）algorithm to get the content miss rate and VRTT at each router.Simulation results show the validity of our MCAA algorithm.

关 键 词：CCN MCAA miss rate VRTT 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] P207[自动化与计算机技术—计算机科学与技术]