摘要
Delay aware routing is now widely used to provide efficient network transmission. However, for newly developing or developed mobile communication networks(MCN), only limited delay data can be obtained. In such a network, the delay is with epistemic uncertainty, which makes the traditional routing scheme based on deterministic theory or probability theory not applicable. Motivated by this problem, the MCN with epistemic uncertainty is first summarized as a dynamic uncertain network based on uncertainty theory, which is widely applied to model epistemic uncertainties. Then by modeling the uncertain end-toend delay, a new delay bounded routing scheme is proposed to find the path with the maximum belief degree that satisfies the delay threshold for the dynamic uncertain network. Finally, a lowEarth-orbit satellite communication network(LEO-SCN) is used as a case to verify the effectiveness of our routing scheme. It is first modeled as a dynamic uncertain network, and then the delay bounded paths with the maximum belief degree are computed and compared under different delay thresholds.
基金
National Natural Science Foundation of China (61773044,62073009)
National key Laboratory of Science and Technology on Reliability and Environmental Engineering(WDZC2019601A301)。
作者简介
MA Ji was born in 1992.He received his bachelor’s and master’s degrees in mechanical engineering from Beijing Jiaotong University and Beihang University in 2013 and 2016,respectively.He is a Ph.D.candidate student on systems engineering at School of Reliability and Systems Engineering,Beihang University.His research interests are resilience,network reliability,and network optimization methods.E-mail:maji@buaa.edu.cn;KANG Rui was born in 1966.He received his bachelor’s and master’s degrees in electrical engineering from Beihang University in 1987 and 1990,respectively.He is a distinguished professor in School of Reliability and Systems Engineering,Beihang University,Beijing,China.His main research interests include reliability,resilience for complex system and modeling epistemic uncertainty in reliability and maintainability.E-mail:kangrui@buaa.edu.cn;LI Ruiying was born in 1982.She received her Ph.D.degree in systems engineering from Beihang University,China,in 2009.From 2013 to 2014,she was a visiting scholar with the Department of Systems and Industrial Engineering,University of Arizona,USA.She has authored fifty scholarly papers covering various areas of network reliability and system resilience.Her main research interests include network resilience and reliablity.E-mail:liruiying@buaa.edu.cn;Corresponding author:ZHANG Qingyuan was born in 1993.He received his Ph.D.degree in systems engineering from Beihang University,Beijing,China,in 2020.In 2019,he was a visiting Ph.D.student in civil engineering at the University of British Columbia.From 2020 to 2023,he held a postdoctoral position at the School of Aeronautic Science and Engineering,Beihang University.He is currently an associate professor with the International Innovation Institute,Beihang University.His research interests include belief reliability theory,reliability modeling,uncertainty quantification method in engineering,and the reliability design method.E-mail:zhangqingyuan@buaa.edu.cn;LIU Liang was born in 1986.He received his bachler’s degree and doctor’s degree of electronical engineer from Beihang University in 2009 and 2017,respectively.Now,he is a supreme engineer in China Academy of Space Technology.His research interests are satellite communication and space network.E-mail:liuliang1945@buaa.edu.cn;WANG Xuewang was born in 1984.She received her Ph.D.degree in systems engineering from Beihang University,China,in 2012.She is now a senior engineering in the Institute of Telecommunication and Navigation Satellites,China Academy of Space Technology.Her research interests are satellite reliability and constellation reliability.E-mail:wxw_air@126.com。
