Wireless mesh networks (WMNs) have been proposed as a key technology for next generation wireless networking to provide last-mile broadband access. Here we have given our observation and study for end to-end bandwidth estimation in WMNs. End-to-end Bandwidth Estimation is an important metric for network management and monitoring. It can also improve the effectiveness of congestion control mechanism, audio/video stream adoration and dynamic overlay. In recent years, many techniques have been developed for bandwidth estimation in the wired as well as the last-hop wireless networks, but they under-perform in WMNs. We investigate attributes that can affect the bandwidth estimation in WNMs; we found existing techniques do not consider the effect of attributes like CSMA/CA-based contending traffic and high interference interference that leads to the error full estimation. In this paper, we present an active bandwidth measurement technique called Bandwidth Probe based on the packet dispersion principle. It measures the steady state bandwidth of the system while considering the effects of the FIFO cross and CSMA/CA-based contending traffic. It is also mitigating the effect of interference. We also show how to achieve the stationary state behaviour of the system to limit the number of probe packets. On simulation, Bandwidth Probe gives a accurate estimation of the available bandwidth using average convergence time and lower intrusiveness.

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