Simulation analysis of a method to improve data-transmission performance of Nanshan 26m Radio Telescope based on Software-Defined Networks
Simulation analysis of a method to improve data-transmission performance of Nanshan 26m Radio Telescope based on Software-Defined Networks
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基于软件定义网络提高南山26m射电望远镜数据传输性能方法仿真分析
DOI：
10.1088/1674-4527/21/11/279
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发表时间：
2021-12
影响因子：
1.8
通讯作者：
Zhang Yazhou
中科院分区：
文献类型：
--
作者：
Wang Jie;Zhang Hailong;Wang Na;Ye Xinchen;Wang Wanqiong;Li Jia;Zhang Meng;Zhang Yazhou
新疆天文台数据中心(XAO-DC)于2015年投入使用，提供南山26米射电望远镜(NSRT)多年来收集的宝贵天文数据的归档、发布和检索等服务，实现天文观测数据的开放共享。NSRT的观测数据通过专用光纤传输到100公里外的XAO-DC进行长期存储。随着数据量的不断增加，现有网络的静态架构因网络带宽有限而无法满足NSRT的数据传输需求。为了利用现有的静态网络架构获得高速数据传输，提出了一种利用软件定义网络(SDN)重建数据传输网络的方法，利用SDN的数据和控制平面分离、开放可编程的特点，结合Minnet仿真平台进行实验，使单线程的TCP吞吐量提高了~24.7%，多线程的吞吐量分别提高了~9.8%、~40.9%、~35.5%和~11.7%，与现有的网络结构相比，延迟降低了~63.2%。
Data Center of Xinjiang Astronomical Observatory (XAO-DC) commenced operating in 2015,and provides services including archiving,releasing and retrieving precious astronomical data collected by the Nanshan 26m Radio Telescope (NSRT) over the years,and realises the open sharing of astronomical observation data.The observation data from NSRT are transmitted to XAO-DC 100 km away through dedicated fiber for long-term storage.With the continuous increase of data,the static architecture of the current network cannot meet NSRT data-transmission requirements due to limited network bandwidth.To get high-speed data-transmission using the existing static network architecture,a method for reconstruction data-transmission network using Software-Defined Networks (SDN) is proposed.Benefit from the SDN's data and control plane separation,and open programmable,combined with theMininet simulation platform for experiments,the TCP throughput (of single thread) was improved by ~24.7%,the TCP throughput (of multi threads) was improved by ~9.8%,~40.9%,~35.5% and ~11.7%.Compared with the current network architecture,the Latency was reduced by ~63.2%.
DOI：
10.1088/0067-0049/188/2/488
发表时间：
2010-05
期刊：
The Astrophysical Journal Supplement Series
影响因子：
--
作者：
B. Winkel;P. Kalberla;J. Kerp;L. Floeer
通讯作者：
B. Winkel;P. Kalberla;J. Kerp;L. Floeer
DOI：
10.1088/1538-3873/aa80d2
发表时间：
2018-04-01
影响因子：
3.5
作者：
MacMahon, David H. E.;Price, Danny C.;Woody, Dave
通讯作者：
Woody, Dave
迈向天文科学平台：中国虚拟天文台的经验与教训
影响因子：
2.5
作者：
Cui, C.;Tao, Y.;Zhang, H.
通讯作者：
Zhang, H.