Improving Quality of VoIP over WiMAX

Real-time services such as VoIP are becoming popular and are major revenue earners for network service providers. These services are no longer confined to the wired domain and are being extended over wireless networks. Although some of the existing wireless technologies can support some low-bandwidth applications, the bandwidth demands of many multimedia applications exceed the capacity of these technologies. The IEEE 802.16-based WiMAX promises to be one of the wireless access technologies capable of supporting very high bandwidth applications. In this paper, we exploit the rich set of flexible features offered at the medium access control (MAC) layer of WiMAX for the construction and transmission of MAC protocol data units (MPDUs) for supporting multiple VoIP streams. We discuss the quality of VoIP calls, usually given by R-score, with respect to the delay and loss of packets. We analysis the quality of service (QoS) on long distance data transfer between two locations with VoIP over WiMAX will be performed. Performance of selected parameters will be done using the

[1]  Young-June Choi,et al.  Scheduling for VoIP service in cdma2000 1x EV-DO , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[2]  Rajadurai Rajavelsamy,et al.  Performance evaluation of VoIP over 3G-WLAN interworking system , 2005, IEEE Wireless Communications and Networking Conference, 2005.

[3]  Todor Cooklev,et al.  Air Interface for Fixed Broadband Wireless Access Systems , 2004 .

[4]  Rauf Izmailov,et al.  Improving R-Score of VoIP Streams over WiMax , 2006, 2006 IEEE International Conference on Communications.

[5]  Iwan Adhicandra.  Measuring Data and VoIP Traffic in WiMAX Networks , 2010, ArXiv.

[6]  Bang Wang,et al.  Performance of VoIP on HSDPA , 2005, 2005 IEEE 61st Vehicular Technology Conference.

[7]  Steven J. Vaughan-Nichols,et al.  Achieving Wireless Broadband with WiMax , 2004, Computer.

[8]  Hui Min Chong,et al.  Comparative analysis of traditional telephone and voice-over-Internet protocol (VoIP) systems , 2004, IEEE International Symposium on Electronics and the Environment, 2004. Conference Record. 2004.

[9]  Shamik Sengupta,et al.  Improving Quality of VoIP Streams over WiMax , 2008, IEEE Transactions on Computers.

[10]  Iti Saha Misra,et al.  VOIP Performance Over Broadband Wireless Networks Under Static and Mobile Environments , 2010 .

[11]  Victor Rangel,et al.  Performance Analysis of QoS Scheduling in Broadband IEEE 802 . 16 Based Networks , 2007 .