摘要
针对多用户批量下载遥感影像数据时的速率问题,以及给网络带来负载不均的影响,本文根据网络IP地址的分布特性,提出了一种静态网络距离算法和节点服务能力评估算法,首先根据网络IP地址的分布特性,得到基于距离的最优下载序列,再根据节点的网络带宽、CPU资源以及存储能力得到节点的服务能力并为其分配相应的任务量。在网络产生大量并发访问的情况下,这种方法能有效提高遥感影像数据的传输效率,实现数据分发网络的负载均衡,提高网络的服务质量。
In this paper,a static network distance algorithm and a node service capability evaluation algorithm are proposed based on the distribution of remote IP images to solve the rate issues and uneven load influence on the network when multi-user batch downloading remote sensing image data.First of all,according to the network IP address distribution features,get the optimal download sequence based on distance,again according to the nodes of the network bandwidth,CPU and storage capacity get node's service ability and assigns corresponding task.In the case of network produces a large number of concurrent access,this method can effectively improve the efficiency of remote sensing image data transmission,achieve the load balancing of data distribution network and improve the quality of network service.
作者
孟敏
马骏
王栋
臧文乾
黄祥志
赵亚萌
Min Meng;Jun Ma;Dong Wang;WenQian Zang;XiangZhi Huang;YaMeng Zhao(Computer and Information Engineering College,Henan University,Kaifeng,Henan 475001,China;Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences,Beijing 100012,China)
基金
973计划项目"多尺度气溶胶综合观测和时空分布规律研究“(课题号Y070070070)十三五民用航天预研项目“天地一体化卫星应用评价技术”(课题号Y7K00100KJ)中科院遥感所创新项目“全球地球综合观测遥感产品与验证”(课题号Y7SG0600CX)。
关键词
批量下载
IP地址
网络距离
节点服务能力
高并发
负载均衡
Batch Download
IP Address
Network Distance
Node Service Capability
High Concurrency
Load Balancing
