项目名称: 面向云计算系统的协作式数据消冗传输理论及方法研究
项目编号: No.61271275
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 无线电电子学、电信技术
项目作者: 王树鹏
作者单位: 中国科学院信息工程研究所
项目金额: 80万元
中文摘要: 在云计算系统中,如何充分利用网络资源实现高效数据传输是一个重要问题。申请人前期研究中发现目标节点的临近节点上会存在大量与源节点传输数据相同的数据,让这些节点协助源节点向目标结点传输数据,可以缩短传输时间并减少对关键网络资源的占用,避免网络链路热点的出现给整个网络造成较大的冲击。传统基于消冗的数据传输机制仅关注了目标节点上所存在的重复数据,避免源节点传输这部分数据节省网络资源,但是没有考虑上述这种情况。在本项目中,申请人首次针对该问题展开了研究,提出了协作式数据消冗传输模型,给出了节点间重复数据块的高效定位方法、面向网络资源全局最优化使用和传输开销最小化的数据传输代价评价方法以及面向网络资源全局最优化使用和传输开销最小化的协作数据源选择方法,设计了面向云计算系统的协作式数据消冗传输协议,通过存在重复数据的节点协助源节点向目标节点传输数据,实现了网络资源的全局最优化使用和节点间的高效传输.
中文关键词: 云计算;网络传输;消冗;协作;
英文摘要: In the cloud computing system, efficient utilization of network resource and efficient data transmission is an important problem. In previous study, the applicant find that there are massive data, that are the same as the data transferred from the source node, on the nodes nearby the destination node. These nodes can assist the source node to transfer data to the destination node. That can shorten the transmission time, achieve more efficient utilization of key network resources and can avoid the occurrence of hot network links. Traditional data transmission approaches based on data deduplication only focus on the duplicated data on the destination node, and save the network resources by transferring the deduplicated data. In this project, the applicant research on this problem firstly, and propose the data transmission mode based on cooperated data deduplication. Then, the method to locate the duplicate data block among nodes, the method to evaluate the price of network transmission and the method to choose the cooperated source node are researched. Finally, the protocol of network transmission based on data deduplication corporately is designed. The goal of the optimum network resource utilization and minimum transmission cost is reached by the approach of network transmission based on data deduplication corpo
英文关键词: Cloud computing;Network transmission;Deduplication;Cooperation;