Abstract
VOIP Performance Over Broadband Wireless Networks Under Static and Mobile Environments
Highlights
Wireless networking can be considered as the backbone of the modern telecommunication system
Close observation of the results reveals that WiMAX network performs better on the basis of jitter, MOS and packet end-to-end delay than conventional WLAN 802.11b in case of voice applications when no silence suppression is considered, i.e. with no bar on the bandwidth usage
In this paper extensive simulation based performance analysis has been done over a WiMAX based Broadband Wireless Access (BWA) network, a WLAN (IEEE 802.11b), and on a WLAN-WiMAX integrated network for VoIP application. For this purpose OPNET 14.5.A and 15.0.A have been used as the simulation platform
Summary
Wireless networking can be considered as the backbone of the modern telecommunication system. The fast demand for high speed data transfer without appreciable loss has led to the evolution of technologies like WiMAX and WLAN. The above technologies have reached an enhanced level to meet the customer demand, still there is ample scope to increase the data rate and quality of service (QoS) beyond the present level. WLANs [1] are mostly designed for private wired LANs and have been enormously successful for data traffic but not for voice traffic as it is highly sensitive to delay and loss [2]. Voice over WLAN has become popular, but maintenance of the speech quality is still one of many technical challenges of the VoIP system. VoIP is spreading rapidly and huge requirement of supporting multiple concurrent VoIP communications is coming up, but WLAN can support only a handful number of users [3] [4]
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