QoS Simulation and analysis of HTTP over LEO satellite constellation

• Main Authors: Audah, Lukman, Sun, Zhili, Cruickshank, Haitham
• Format: Article
• Language: English
• Published: 2012
• Subjects: T Technology (General)
• Online Access: http://eprints.uthm.edu.my/8018/1/J4372_070839e14237584ce0fc6c3529b6352a.pdf; http://eprints.uthm.edu.my/8018/
• Institution: Universiti Tun Hussein Onn Malaysia

In this paper, we present an end-to-end QoS simulation studies on internetworking of remote LAN and long range communications over LEO-Iridium satellites constellation taking SuperJARING network in Malaysia as an example. A macro level network simulation scenario based on actual network topology in Malaysia is implemented as Diffserv network model using the network simulator-2 (NS-2). Web traffic (HTTP) is used as the internet traffic models in the simulation analysis. All simulations are carried out in error-free and link-loss environment. In error-free simulations, the accumulative network traffic loads are varied from 20%, 50% and 80% while in link�loss environment simulations only 20% traffic load is used with bit error rate (BER) varied from 1x10-5 , 1x10-4 and 2x10-4 . We compare the empirical TCP throughput traces with analytical model for validation. The results show clearly that QoS can be achieved with IP Diffserv over satellites constellation like Iridium.