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dc.contributor.authorMattar, Karim Abdel Magiden_US
dc.date.accessioned2011-10-20T04:42:48Z
dc.date.available2011-10-20T04:42:48Z
dc.date.issued2007en_US
dc.identifier.urihttp://hdl.handle.net/2144/1693
dc.description.abstractModern cellular channels in 3G networks incorporate sophisticated power control and dynamic rate adaptation which can have a significant impact on adaptive transport layer protocols, such as TCP. Though there exists studies that have evaluated the performance of TCP over such networks, they are based solely on observations at the transport layer and hence have no visibility into the impact of lower layer dynamics, which are a key characteristic of these networks. In this work, we present a detailed characterization of TCP behavior based on cross-layer measurement of transport, as well as RF and MAC layer parameters. In particular, through a series of active TCP/UDP experiments and measurement of the relevant variables at all three layers, we characterize both, the wireless scheduler in a commercial CDMA2000 network and its impact on TCP dynamics. Somewhat surprisingly, our findings indicate that the wireless scheduler is mostly insensitive to channel quality and sector load over short timescales and is mainly affected by the transport layer data rate. Furthermore, we empirically demonstrate the impact of the wireless scheduler on various TCP parameters such as the round trip time, throughput and packet loss rate.en_US
dc.language.isoen_USen_US
dc.publisherBoston University Computer Science Departmenten_US
dc.relation.ispartofseriesBUCS Technical Reports;BUCS-TR-2007-016en_US
dc.titleTCP over CDMA2000 Networks: A Cross-Layer Measurement Studyen_US
dc.typeTechnical Reporten_US
etd.degree.nameMaster of Arts
etd.degree.levelmasters
etd.degree.disciplineComputer Science
etd.degree.grantorBoston University
dc.relation.isnodouble1677*


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