TCP Performance over Mobile Ad-hoc Networks: A Quantitative Study

Vaidyanathan Anantharaman, Seung-Jong Park, Karthikeyan Sundaresan, and Raghupathy Sivakumar
GNAN Research Group
School of Electrical and Computer Engineering
Georgia Institute of Technology


TCP is the transport protocol used predominantly in the Internet as well as in peer-to-peer networks. However, peerto-peer networks exhibit very different characteristics from those of conventional client-server networks. In this paper, we argue that the unique characteristics of peer-to-peer networks render TCP inappropriate for effective data transport in such networks. Specifically, we motivate transport layer support for multipoint-to-point connections to address the problem of sources in peer-to-peer networks lacking serverlike properties in terms of capacity and availability. We outline several key elements in designing a new transport protocol for supporting effective multipoint-to-point connections. Finally, we present a case study for a multipointto-point transport protocol that puts together these design elements in practice. We thus motivate further research along this direction.