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This book provides the approaches to simulating and emulating Transmission Control Protocol (TCP) over Network Simulator 2 (NS-2). Furthermore, the book had focused on the congestion control mechanism used by standard TCP and illustrated that the performance of TCP variants are directly affected by their own congestion control mechanisms and the packets amount transferred over network connections indicates the work and the behaviour of the congestion window. In addition, the book analysed and formulated the typical congestion control where it is commonly divided into two phases, Slow-Start phase and Congestion Avoidance phase. It had reviewed the factors and the parameters that affect on the behaviour and the TCP performance, and had demonstrated the design of the congestion control of six TCP source variants in addition to some other TCP´s using network simulator.

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Dr.Ghassan A. Abed received his BSc. and MSc. in Computer Engineering from University of Technology, Iraq; also, he received his Ph.D. from The National University of Malaysia. Currently, he is a lecturer in Dijlah University College and he is the head of communication department in Ministry of Higher Education and Scientific Research in Iraq.

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