End-to-End Stochastic QoS Performance Under Multi-layered Satellite Network
To meet the growth of real-time and multimedia traffic, the next generation of satellite networks with a guarantee of quality of service (QoS) is indeed, urgent. In this paper, we support the multi-layered satellite network as the scenario, owing to dynam
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School of Computer Science and Technology, Changchun University of Science and Technology, Changchun, China [email protected] 2 Institute of Space Optoelectronics Technology, Changchun, China Norwegian University of Science and Technology, Trondheim, Norway
Abstract. To meet the growth of real-time and multimedia traffic, the next generation of satellite networks with a guarantee of quality of service (QoS) is indeed, urgent. In this paper, we support the multi-layered satellite network as the scenario, owing to dynamic topology and distinct classification of the generated traffics. We map the satellite network system into a tandem queuing model, which the purpose is devoted to use a mathematical tool for evaluating the performance bounds of per-flow end-to-end networks. For delay-sensitive traffics, we compare two different arrival models–Poisson process and self-similar process. Meanwhile, we apply traditional scheduling strategy to MEO nodes while considering link impairment between a pair of satellites. Finally, we analyze, in a numerically way, which parameters (and how they) influence the per-flow end-to-end performance bounds. Our analysis can be used as a reference to China’s future satellite topology and routing algorithms designed and, optimization given a network with performance requirements and constraints. Keywords: Quality of service · Multi-layered satellite network Tandem queue model · Transmission path
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Introduction
With the widespread adoption of multimedia applications in the Internet, how to guarantee quality of service (QoS) for those applications has become a urgent issue in the current research. However, the restriction of geography and technical makes traditional terrestrial wireless network difficult to satisfy users demands. In some particular areas, like islands and isolated mountainous, may not easily deploy adequate infrastructure, even worse in the disasters. Given the advantages of significantly wide coverage and flexible deployment and networking, satellite network plays an essential role in providing better service and worldwide communication environments. c Springer Nature Singapore Pte Ltd. 2017 Q. Yu (Ed.): SINC 2016, CCIS 688, pp. 182–201, 2017. DOI: 10.1007/978-981-10-4403-8 17
End-to-End Stochastic Qos Performance Under Multi-layered Satellite
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Recently, according to the altitude of orbits, satellites are classified into Geostationary Earth Orbit (GEO) satellites, Medium Earth Orbit (MEO) satellites and Low Earth Orbit (LEO) satellites. Combining to GEO satellite, LEO and MEO satellite networks have overwhelming advantages, such as small signal attenuation and shorter round trip delays. They are more suitable for real-time service [1]. But there is a case with some delay-sensitive traffics, if the arrival traffics is long distance traffic (LDT) at the LEO layer, because of the increase of hops of the inter-satellite transmission, it will occur congestion easily, higher queueing delay and packet loss [2]. When MEO is regarded as relay node, it will help business flow reduci
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