Simulation and Analysis of Quality of Service (QoS) Parameters of Voice over IP (VoIP) Traffic through Heterogeneous Networks

Identifying those causes and parameters that affect the Quality of Service (QoS) of Voice-over-Internet Protocol (VoIP) through heterogeneous networks such as WiFi, WiMAX and between them are carried out using the OPNET simulation tool. Optimization of the network for both intra- and inter-system tr...

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Bibliographic Details
Published in:International journal of advanced computer science & applications Vol. 8; no. 7
Main Authors: H., Mahdi, A., Suhail, A., Muzafar, Ali, Maaruf, H., AbdelRahman
Format: Journal Article
Language:English
Published: West Yorkshire Science and Information (SAI) Organization Limited 01.01.2017
Subjects:
Internet telephony
Networks
Optimization
Parameter identification
Quality of service
Quality of service architectures
Wireless communications
ISSN:2158-107X, 2156-5570
Online Access:Get full text
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Summary:Identifying those causes and parameters that affect the Quality of Service (QoS) of Voice-over-Internet Protocol (VoIP) through heterogeneous networks such as WiFi, WiMAX and between them are carried out using the OPNET simulation tool. Optimization of the network for both intra- and inter-system traffic to mitigate the deterioration of the QoS are discussed. The average value of the jitter of the VoIP traffic traversing through the WiFi-WiMAX network was observed to be higher than that of utilizing WiFi alone at some points in time. It is routinely surmised to be less than that of transiting across the WiFi network only and obviously higher than passing through the increased bandwidth network of WiMAX. Moreover, both the values of the packet end-to-end delay and the Mean Opinion Score (MOS) were considerably higher than expected. The consequences of this optimization, leading to a solution, which can ameliorate the QoS over these networks are analyzed and offered as the conclusion of this ongoing research.
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ISSN:2158-107X
2156-5570
DOI:10.14569/IJACSA.2017.080732