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In this paper, the authors present the results from a detailed energy measurement study of different TCP variants when used in Mobile Ad hoc Network environments. More precisely, the authors focus on the node-level cost of the TCP protocol; also know as the computational energy cost. In fact, the computational energy consumption is the most important part of TCP energy consumption. This is already proven in previous work and their results confirm this fact. Sometimes, the computational energy cost is three times that of the communication energy cost. The studied TCP variants, in this paper, are TCP New-Reno, Vegas, SACK, and Westwood.
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