Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (7): 1839-1848.

### Link Adaptive Optimization Method based on Minimizing Packet Loss Rate in AOS Communication System

Qingli Liu*, Yanjun Yang, and Zhiguo Liu

1. National and Local Joint Engineering Laboratory of Intelligent Shipping and Logistics Network Technology, Dalian University, Dalian, 116622, China
• Submitted on  ;
• Contact: * E-mail address: lql0808@sina.com
• About author:Qingli Liu received his Ph.D. from Northeast University, China in 2012. Since 2014, he has been an associate professor in the Information Engineering College at Dalian University. He was a visiting scholar in the Department of Electronic Engineering at Utah State University from September 2015 to March 2016. His research interests include satellite network protocol, network architecture and design, and network technologies.Yanjun Yang received her bachelor's degree from Lingnan Normal University in 2016. Since September 2016, she has been studying for a master's degree at Dalian University. Her main research area is satellite networks.Zhiguo Liu studied in the Information Science and Engineering College at Northeast University and received his M.S. degree and Ph.D. in 2000 and 2003, respectively. He is currently a professor in the Information Engineering College at Dalian University. His main research areas are satellite network protocol, network architecture and design, and network technologies.
• Supported by:
This work was partly financially supported through grants from the National Natural Science Foundation of China (No. 61571074) and the Innovation Support Program for High-level Personnel of Dalian (No. 2016RQ076).

Abstract: Aiming at the problem of packet loss of finite-length queues caused by the characteristics of data high burst, and finally leading to a decrease in throughput in the AOS space communication system, a link adaptive optimization method based on the minimization of the system packet loss rate is proposed. It combines the finite length queue, limited retransmission of the data link layer, and adaptive modulation coding of the physical layer. The system packet loss rate is used as an objective function. By solving the minimum system packet loss rate to reasonably assign the retransmission times and modulation encoding schemes, the system average throughput is improved finally. The theoretical analysis and simulation results show that this method can reduce the system packet loss rate by 80% and increase the system average throughput by 4.2% compared with the AMCA method. At the same time, it can reduce the system packet loss rate by 90% and increase the system average throughput by 11.1% compared with the AMCAFQS method.