Possibility of Using Network Simulator (NS-2) for Modeling Satellite Networks (original) (raw)
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Satellite Model for Network Simulator 3
Proceedings of the Seventh International Conference on Simulation Tools and Techniques, 2014
Digital Video Broadcasting (DVB) organisation has published a bluebook for the 2nd generation of satellite return link specification, DVB-RCS2. Also, the evolution of DVB-S2, currently called DVB-Sx, is in standardization process. Simulations have increased importance in standardization support as well as in internal product development due to the ability to provide faster feedback on technological solutions without the need for early-stage testbed and real systems development. However, there is a need for modular open-source satellite system simulator which would adopt the latest DVB satellite standards. Current simulators owned by satellite vendors, operators and research organizations may be proprietary, generally tailored for special purposes and/or may be based on commercial licenses. In this article we present the building blocks and architecture of satellite model developed on top of a widely used opensource system/packet level simulator Network Simulator 3 (NS-3). The satellite extensions are based on DVB-S2 and DVB-RCS2 specifications for forward and return links, respectively. Simulator module is developed to be highly modular and flexible to be able to match the future R&D needs of satellite system vendors, operators, research organizations, as well as scientific community.
Simple Satellite Network Simulation using OMNET++ 5
In present day's satellite play important role in various part of life and industry. Security, entertainment, data communication and many other things are dependent on satellite networks and communication modules. Satellite is more or less like wireless networks with broadcasting data transfer facility. Data can be transmitted from one point of earth to another point through the geostationary satellites. Satellite implementation is very costly in real, so we have to make first virtual simulation of satellite network to measure its performance. This paper describe the Satellite network Simulation with tool OMNET++5. Before implement a real time model of communication channel, we create simulation model for testing.
International Journal of Satellite Communications, 1995
The availability of good software tools is vital to simulation practitioners. The objective of the OSISIM project (Open System Integrated Simulator) is to set up an environment which integrates facilities and tools to build a communication system, and to study its performance. The environment is called AMS : Atelier for Modelling and Simulation. Using it, the network architect, i.e. the user of the atelier, can quickly construct, in a graphical environment, a concise system from models of several standard networks available in a specific library, and execute the system in an efficient manner. Starting with an outline of the components of the atelier, we describe the AMS prototype, and the internal structure of basic models to be included in it. Moreover, a concrete example of a communication system including a satellite backbone is provided to illustrate how AMS is used to simulate a such system.
A NS-2 Simulation Model of DVB-S2/RCS Satellite Network
2009
Satellite networks are enhanced permanently: new coding techniques, changes in the allocation algorithm or new technologies. These features are first implemented on a test bed in order to prove their efficiency, but an emulation platform is expensive and its implementation is time consuming. A simulation model can solve these issues, by giving a first try out and another way to obtain measurements. Of course, this model has to be as close as possible to the real system by its behavior but also by the layout of its components. The previous reasons lead us to realize a model of a DVB-S2/RCS satellite network on NS-2.
Physical Layer Representation for Satellite Network Emulator
Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2013
In general, emulation of satellite networks has been focused on representing the features of the access network, characterised by large complexity. Physical layer impact has usually been neglected or reduced to static and limited models. The aim of this work is to reformulate a new model of physical layer oriented to network emulation, adapted to multiple satellite systems and configurations. The main achievement of this work is the design of a simple method of analysis of end-to-end communication links, that can rely on separated uplink and downlink attenuation channels generated offline or in runtime. The model has been integrated in the open source platform PLATINE 1 , showing an easy integration to distributed machine emulation and reproducing local propagation conditions for each ground terminal.
RF communication data model for satellite networks
2009
This paper discusses the database structure of an RF taxonomy modeling tool being developed on a Missile Defense Agency (MDA), Phase II, Small Business Innovative Research (SBIR) augmentation contract. The tool is called the Communications System Taxonomy (CommTax) toolkit. The data model underlying the CommTax toolkit will be available to other users as a framework for the transfer of data to other system design tools. With the augmentation authorization, CommTax will include interoperation with Analytical Graphics, Inc. (AGI) Satellite Toolkit (STK), satellite modeling tool as well as the original task of interoperating with Scalable Network Technology's (SNT) QualNet network modeling tool. Interoperation with STK will enable a better visualization of a scenario that is setup and run with CommTax. The QualNet interoperation enables CommTax to determine whether a scenario model is capable of passing enough data fast enough over the various IP and bit-stream, wired and wireless MDA networks to support a successful running of a scenario even if other data could cause congestion on the networks. The purpose of CommTax is to enable the communication engineer to model communications among multiple disparate nodes in the BMDS using Internet Protocol (IP) compliant networks for interconnection. The database framework and data interoperability objectives of the CommTax toolkit, are described in this paper
The Use of Split-Connection in Satellite Networks
In this paper, we discuss the use of the split-connection mechanism in networks involving satellite links. Many researches adopt this procedure in order to isolate the satellite channel from the wired portion of the network, which make possible to maintain TCP protocol in the end-users, while in the satellite link another protocol may be implemented, more suited for the wireless link characteristics, such as long propagation delay and high bit error rate. Though simulation using the software OPNET Modeler 10.0A, we have analyzed the impact of packet losses in the satellite channel, with different values of bit error rate, in the establishment of the end-to-end connection when splitconnection procedure is adopted. In this study, we have assumed the Satellite Transport Protocol (STP) proposed by European Space Agency as the transport protocol for the satellite link and the CCSDS AOS recommendation as the Data Link protocol. Simulation results demonstrate that high bit error rate in satellite systems in conjunction with the long propagation delay may prevent the establishment of the end-to-end connection due to TCP implementations of several operational systems (Windows).