@Article{cmc.2020.09792,
AUTHOR = {Chao Guo, Juan Guo, Chanjuan Yu, Zhaobin Li, Cheng Gong, Abdul Waheed},
TITLE = {A Safe and Reliable Routing Mechanism of LEO Satellite Based on SDN},
JOURNAL = {Computers, Materials \& Continua},
VOLUME = {64},
YEAR = {2020},
NUMBER = {1},
PAGES = {439--454},
URL = {http://www.techscience.com/cmc/v64n1/39151},
ISSN = {1546-2226},
ABSTRACT = {Satellite networks have high requirements for security and data processing 
speed. In order to improve the reliability of the network, software-defined network (SDN) 
technology is introduced and a central controller is set in the network. Due to the 
characteristics of global perspective, control data separation, and centralized control of 
SDN, the idea of SDN is introduced to the design of the satellite network model. As a 
result, satellite nodes are only responsible for data transmission, while the maintenance of 
the links and the calculation of routes are implemented by the controller. For the massive 
LEO satellite network based on SDN, a state evaluation decision routing mechanism is 
proposed. The designed mechanism monitors the status of the entire network effectively 
and reduces the on-board load on the satellite network. The best routing decision is made 
under the comprehensive consideration of the current and historical status of each intersatellite link between Low Earth Orbit (LEO) satellite network nodes. The calculation 
and storage requirements are controlled within a reasonable range. Based on the curve 
parameter transmission fuzzy encryption algorithm, a safe and reliable condition 
assessment decision routing mechanism (CADRM) is designed. It ensures that the 
personal information of the LEO satellite network can be transmitted safely and
effectively. The experimental simulation results show the improvement of network 
throughput, the reduction of packet loss rate and the enhancing of network reliability.},
DOI = {10.32604/cmc.2020.09792}
}