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Accuracy of available estimated bandwidth and convergence delay algorithm are researchers’ challenges in wireless network measurements. Currently a variety of tools are developed to estimate the end-to-end network available bandwidth such as TOPP (Train Of Packet Pair), SLoPS (Self Loading Periodic Stream), Spurce and Variable Packet Size etc. These tools are important to improve the QoS (Quality of Service) of demanding applications. However the performances of the previous tools are very different in term of probing time and estimation accuracy. In this paper we present a fast and accurate bandwidth estimation technique named SLOT. By using NS2 the performance of SLOT technique will be evaluated and the obtain results are analysed by MATLAB software and compared with the TOPP and the SLoPS ones. We show that SLOT has shorter probing time than the TOPP one, and it provides more accurate available estimated bandwidth than the SLoPS one.