Characteristic Analysis of VoIP Traffic for Wireless Networks In Comparison with CBR using QualNet Network Simulator

Ganiga, Raghavendra; Muniyal, Balachandra
July 2012
International Journal of Computer Applications;7/15/2012, Vol. 50, p25
Academic Journal
Voice over Internet Protocol (VoIP) is one of the most important technologies in the world of communication. Around 20 years of research on VoIP, some Quality of Service (QoS) problems of VoIP are still remaining. During the past decade and with growing of wireless technologies, we have seen that many papers turn their concentration from Wired-LAN to Wireless-LAN. VoIP over Wireless LAN (WLAN) faces many challenges, due to the loose nature of wireless network. Issues like providing QoS at a good level, dedicating capacity for calls and having secure calls is more difficult rather than wired LAN. Therefore VoIP over WLAN (VoWLAN) remains a challenging research topic. Popularity of Voice over IP (VoIP) application such as Google Talk, Skype and MSN Messenger is making VoIP over WiMAX an eye-catching market and a driving force for both carriers and equipment suppliers. In this paper experimentally measured VoIP traffic and CBR traffic over the WiMAX network by using the different routing algorithm using QualNet 4.5.1 network simulation tool. In addition, this paper also shows that VoIP application can be best served with WiMAX rather than the CBR. Future work will involve simulating scenarios that are closer to the real world models.


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