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DiffServ over WiMAX network simulation testbed

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In this paper, we are presenting simulations of a WiMAX network with several scenarios that we have defined under the NS simulator, involving different data flow to measure the quality of the service offered. | International Journal of Computer Networks and Communications Security C VOL.1, NO.6, NOVEMBER 2013, 278–283 Available online at: www.ijcncs.org ISSN 2308-9830 N C S DiffServ over WiMAX network simulation testbed Oumarou HALIDOU1 and Radouane MRABET2 1, 2 Mohammed V University – Souissi, National High School for Computer Sciences and Systems Analysis, Rabat, Morocco E-mail: 1oumarhalid@yahoo.fr, 2mrabet@ensias.ma ABSTRACT The broadband wireless IEEE 802.16 technology, known as WiMax transmission, is one of the first systems designed as multi service integrating QoS management from the beginning. Its wide deployment through the Internet has attracted great interest from researchers and industrialists. WiMAX has defined five classes of service as well as their requirements. However, the standard has not specified the different scheduling and queue management algorithms to use. In this paper, we are presenting simulations of a WiMAX network with several scenarios that we have defined under the NS simulator, involving different data flow to measure the quality of the service offered. Keywords: WiMAX, DiffServ QoS, scheduling, queue, NS. 1 INTRODUCTION The traffic on internet networks has increased significantly in recent years not only in volume, due to the larger number of users and the emergence of new applications, but also in kind, through the integration of several types of information that have different pressure on the same media. The All-IP concept whose aim is to migrate all traditional services to the IP technology is becoming a reality. The user is increasingly looking for a broadband wireless environment, omnipresent, and especially at low cost, that guarantees him the connectivity and the Internet access wherever he is and at any time. It has resulted into a development and a wide propagation of smart mobile terminals such as PDAs, smart phones and tablets. It is in that context that IEEE has developed a new standard, the 802.16, commonly .