COBRA_车载网络中基于协作的大数据传输增强机制.pdfVIP

计算机研究与发展 ISSN N 111777TP J ournal of Comp ut er Research and Develop ment 46 ( 12) :, 2009 COBRA :车载网络中基于协作的大数据传输增强机制 1 ,3 2 4 5 田　锐 　孙利民 　刘 　燕 　马 　建 1 ( 中国科学院计算技术研究所 　北京 　100 190) 2 ( 中国科学院软件研究所信息安全国家重点实验室 　北京 　100 190) 3 ( 中国科学院研究生院　北京 　100 190) 4 (北京大学软件与微电子学院　北京 　102600) 5 (诺基亚研究中心 　北京 　100 176) ( sunlimin @i s. i scas. ac . cn) COBRA : A Collaboration Based Reinforcement Mechanism for Mass Transmission in VA NETs Tian Rui1 ,3 , Sun Limin2 , Liu Yan4 , and Ma J ian5 1 ( I ns t i t ute of Comp uti ng Technology , Chi nese A ca demy of S ciences , B eij i ng 100 190) 2 ( S t ate Key L aboratory of I nf orm ation S ecu ri ty , I ns ti t ute of S of tw a re , Chi nese A ca demy of S ciences , B eij i ng 100 190) 3 ( Gra d uate Uni ve rs i ty of Chi nese A ca demy of S ciences , B eij i ng 100 190) 4 ( S chool of S of tw a re an d M ic roelect ronics , Pek i ng Uni ve rs i ty , B eij i ng 102600) 5 ( ) N ok i a R esea rch Cente r , B eij i ng 100 176 Abstract 　V ehicular ad hoc net wor k s (V AN E Ts) allow vehicle s to for m selfor ganized net wor k s w hile drivin g , w hich can off er cheap met ho ds to acce ss t he Int er net for t he p a ssenger s. When t he scop e of VAN E Ts beco me s lar ger , its oft en needed to forwar d ma ssive dat a to so me fixed Int er net A P s di st ribut ed in t he cit y . There are a lot of routing algorit hm s p ropo sed to reduce t he me ssage p rop agation delay and al so reduce bandwidt h con sump tion on VAN E Ts , but mo st of w hich are under t he a ssump tion