A QoS Analysis of UGS and ERTPS Scheduling Service Flows in video Conference over Worldwide Interoperability for Microwave Access (Wi-MAX)
Alkhatab Khalafalla Muslim Abdelhadi1, Hala Eldaw Idris2, Abdalla Abdalrahman Mohamed3
1Alkhatab Khalafalla Muslim Abdelhadi, Department of Communication, Faculty Post Graduate Studies, El Neelain University, Khartoum, Sudan.
2Dr. Hala Eldaw Idris, Department of Communication, Faculty Post Graduate Studies, El Neelain University, Khartoum, Sudan.
3Abdalla Abdalrahman Mohamed, Department of Communication, Faculty Post Graduate Studies, El Neelain University, Khartoum, Sudan.
Manuscript received on 13 April 2017 | Revised Manuscript received on 20 April 2017 | Manuscript Published on 30 April 2017 | PP: 145-150 | Volume-6 Issue-4, April 2017 | Retrieval Number: D4935046417/17©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The IEEE 802.16e (published 2005) defined five different Quality of Service (QoS) classes including UGS, ertPS, rtPS, nrtPS and BE. It is well known that UGS and ertPS are designated to support QoS for voice applications with silence suppression. The other three classes have different applications. In this paper, we investigate the performance of UGS and ertPS QoS classes in terms of multimedia applications such as video conferencing over WiMAX network scenarios. The OPNET modeler 14.5 simulator is employed for simulation purposes in order to evaluate the performance of UGS and ertPS with a focus on video conferencing streaming and voice applications. The simulations show that the user with UGS QoS could provide higher throughput and lower delay, lower jitter, and lower queuing delay compared to the ertPS case. Consequently, we also evaluated the video conferencing/streaming application for the ertPS QoS case. Simulation results in this case show that for a defined two scenarios of network and a certain combination of users that are allocated a QoS and a selected application e.g., voice or video conferencing, UGS offers higher performance than ertPS.
Keywords: QoS, UGS, ErtPS, Throughput, Delay, Jitter, Queuing Delay.
Scope of the Article: WSN