CMLP: Exploiting Caches at Multiple Levels of Proxies to Enhance Seamless Mobility Support in Information-Centric Networks  

作　　者：Haoqiu Huang Lanlan Rui Weiwei Zheng Danmei Niu Xuesong Qiu 

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

出　　处：《China Communications》2016年第10期86-107,共22页中国通信（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant Nos. 61302078 and 61372108);National High-tech R&D Program of China (863 Program) (Grant Nos. 2011AA01A102);National S&T Major Project (Grant Nos. 2011ZX 03005-004-02);Beijing Higher Education Young Elite Teacher Project (Grant Nos. YETP0476)

摘　　要：The recent evolution of the Internet towards "Information-centric" transfer modes has renewed the interest in exploiting proxies to enhance seamless mobility. In this work, we focus on the case of multiple levels of proxies in ICN architectures, in which content requests from mobile subscribers and the corresponding items are proactively cached to these proxies at different levels. Specifically, we present a multiple-level proactive caching model that selects the appropriate subset of proxies at different levels and supports distributed online decision procedures in terms of the tradeoff between delay and cache cost. We show via extensive simulations the reduction of up to 31.63% in the total cost relative to Full Caching, in which caching in all 1-level neighbor proxies is performed, and up to 84.21% relative to No Caching, in which no caching is used. Moreover, the proposed model outperforms other approaches with a flat cache structure in terms of the total cost.The recent evolution of the Inter- net towards ＂Information-centric＂ transfer modes has renewed the interest in exploiting proxies to enhance seamless mobility. In this work, we focus on the case of multiple levels of proxies in ICN architectures, in which con- tent requests from mobile subscribers and the corresponding items are proactively cached to these proxies at different levels. Specifically, we present a multiple-level proactive caching model that selects the appropriate subset of proxies at different levels and supports distrib- uted online decision procedures in terms of the tradeoff between delay and cache cost. We show via extensive simulations the reduction of up to 31.63% in the total cost relative to Full Caching, in which caching in all l-lev- el neighbor proxies is performed, and up to 84.21% relative to No Caching, in which no caching is used. Moreover, the proposed mod- el outperforms other approaches with a flat cache structure in terms of the total cost.

关 键 词：Information-centric networking mobility multiple levels of proxies PUBLISH-SUBSCRIBE 

分 类 号：TN929.5[电子电信—通信与信息系统]