Browsing by Autor "Nicolas Montavont"

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    Analysis and Evaluation of WiFi Scanning Strategies
    (2010) German Castignani; Andrés Emilio Arcia Moret; Nicolas Montavont
    4to Congreso Iberoamericano de Estudiantes de Ingeniería Eléctrica (IV CIBELEC 2010). \n5ta Jornadas de Ingeniería Eléctrica (V JIELECTRIC 2010)
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    TCP ACK division revisited
    (2010) Andrés Emilio Arcia Moret; Nicolas Montavont; Jean‐Marie Bonnin; David Ros Sanchez
    In TCP, receivers usually delay the emission of acknowledgements (ACK) packets for efficiency purposes (e.g., alleviate the processors charge or piggyback information in telnet connections). However, just as a TCP receiver may send less than one ACK per incoming data packet, it might also send more than one ACK per data packet without breaking the fundamental ACK semantics. In this article we investigate the impact of systematically increasing the ACK frequency and we discuss the uses and misuses of the technique. Interestingly, even when the ACK division seems applicable to unfairly gain bandwidth, results are not straightforward. There are several considerations that limit the impact of ACK division, such as the interactions with link layer protocols, the inners of TCP, the background traffic and the TCP congestion control algorithms.