Beta 1

Title Energy Efficient Client-centric Shaping of Multi-flow TCP Traffic
Author Raja, Ahmad Nazir
Supervisor Probst, Christian W. (Language-Based Technology, Department of Informatics and Mathematical Modeling, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
Sjödin, Peter (KTH Computer Science and Communication)
Institution Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
Thesis level Master's thesis
Year 2010
Abstract With the explosion of mobile devices, there is a pressing need to explore optimal ways of battery consumption. One of the widely used mechanisms for energy conservation is the IEEE 802.11b Power Save Mode (PSM). The mechanism suggests that the wireless interface should be transitioned to a low power, sleep state when idle. PSM needs infrastructure support and studies have shown that it adversely affects the throughput in some cases. Other than using PSM, there are various power saving mechanisms that either suggest a trade-o between performance and energy consumption, propose usage of power aware protocols or require additional infrastructure support. We have implemented a modified version of the client-centric PSMT protocol which is capable of minimizing energy consumption while maintaining the throughput. The protocol works by exploiting the TCP ow-control mechanism and our implementation can be deployed without changing the existing TCP functionality. Furthermore, the client-centric nature of the protocol enables easy deployment of the solution. The protocol is application independent but is targeted for bulky TCP transfers. Our solution can be used on Linux based systems and is kept portable as it can be deployed with different wireless devices without major modications. We have tested our solution with real web-servers and our results show that the protocol can achieve upto 80%, 65% and 45% savings for one, two and four active connections respectively.
Imprint Technical University of Denmark (DTU) : Kgs. Lyngby, Denmark
Series IMM-M.Sc.-2010-46
Original PDF ep10_46_net.pdf (1.46 MB)
Admin Creation date: 2010-07-09    Update date: 2010-07-09    Source: dtu    ID: 264988    Original MXD