Browsing by Author "Tiemeni, Ghislaine Livie Ngangom"

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    A mobile platform traffic generator for network performance evaluation
    (Telkom, 2013) Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella M.; Rey-Moreno, Carlos; Tucker, William David
    This work in progress paper presents an overview of the development of an efficient and accurate mobile traffic generator based on an open source computer-based traffic generator software. A high performance mobile traffic generator would simplify the evaluation of the quality of networks deployed in remote areas. The motivation for this software is to ease feasibility testing and monitoring in the field particularly in rural areas by using affordable and lightweight technology such as a mobile device. Furthermore, a mobile system is more suitable than a personal computer (PC) or laptop in a rural area where the deployment of computers is difficult and impractical. To conduct the research, both an experimental and a simulation research methodology will be applied and the method of investigation will combine methods such as laboratory experiments, document analysis and a literature survey.
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    Performance estimation of wireless networks using traffic generation and monitoring on a mobile device.
    (University of the Western Cape, 2015) Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella; Tucker, William
    In this study, a traffic generator software package namely MTGawn was developed to run packet generation and evaluation on a mobile device. The call generating software system is able to: simulate voice over Internet protocol calls as well as user datagram protocol and transmission control protocol between mobile phones over a wireless network and analyse network data similar to computer-based network monitoring tools such as Iperf and D-ITG but is self-contained on a mobile device. This entailed porting a ‘stripped down’ version of a packet generation and monitoring system with functionality as found in open source tools for a mobile platform. This mobile system is able to generate and monitor traffic over any network interface on a mobile device, and calculate the standard quality of service metrics. The tool was compared to a computer–based tool namely distributed Internet traffic generator (D-ITG) in the same environment and, in most cases, MTGawn reported comparable results to D-ITG. The important motivation for this software was to ease feasibility testing and monitoring in the field by using an affordable and rechargeable technology such as a mobile device. The system was tested in a testbed and can be used in rural areas where a mobile device is more suitable than a PC or laptop. The main challenge was to port and adapt an open source packet generator to an Android platform and to provide a suitable touchscreen interface for the tool. ACM Categories and Subject Descriptors B.8 [PERFORMANCE AND RELIABILITY] B.8.2 [Performance Analysis and Design Aids] C.4 [PERFORMANCE OF SYSTEMS] Measurement techniques, Performance attributes
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    Performance Evaluation of a Wireless Network using a VoIP Traffic Generator on a Mobile Device
    (ACM, 2014) Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella; Tucker, William David
    The problem of generating different patterns of traffic to emulate real user behaviour is receiving considerable attention with the construction of new and more complex network architectures. The theoretical modelling of waveforms or signals that flow through networks is valuable in a variety of scenarios including performance analysis and the design of communication systems. In the literature, many computer-based performance evaluation tools have been discussed. However, these tools lack the ability to run on affordable technologies such as mobile phones. The fundamental contribution of this work is the design of a traffic generating tool called MTGawn which is able to run on a mobile device. Design Science Research was the research methodology used for the design and deployment of a prototype of the proposed system. VoIP traffic was emulated using an implementation of well-known real time transport protocols such as RTP and cRTP, and parameterization was defined by using three codecs namely: G.711, G.723, and G.729. An evaluation was performed in a laboratory wireless network testbed and preliminary results were collected and analysed. The results of the experiments show that such a measuring instrument can be deployed on a mobile phone. More experiments are being done to ensure the accuracy of the data and also to compare the results with that of computer-based systems. Furthermore additional functionalities, similar to the functionality found on the computer-based open source tools, are being added to the mobile tool.
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    Rural Wireless Mesh Network Analysis on Mobile Devices
    (Telkom SA, 2014) Tiemeni, Ghislaine Livie Ngangom; Venter, Isabella; Tucker, William David
    The aim of this research effort is to build an efficient and accurate mobile traffic generator based on open source computer-based traffic generator software. A high performance mobile traffic generator would make the evaluation of the quality of networks, deployed in remote areas, simpler. The motivation for this software is to ease feasibility testing and monitoring in the field particularly in rural areas by using affordable and lightweight technology such as a mobile device. Furthermore, a mobile system is more suitable than a personal computer (PC) or laptop in a rural area where the deployment of computers is difficult and impractical. To conduct the research, both an experimental and a simulation research methodology will be applied and the method of investigation will combine methods such as laboratory experiments, document analysis and a literature survey.