  With the exponential growth in mobile data traffic taking place currently and
projected into the future, mobile operators need cost effective ways to manage
the load of their networks. Traditionally, this has been achieved by offloading
mobile traffic onto Wi-Fi networks due to their low cost and ubiquitous
deployment. Recently, LTE operating in the unlicensed spectrum has drawn
significant interests from mobile operators due to the availability of the
unlicensed spectrum. However, the deployment of LTE networks in the unlicensed
band poses significant challenges to the performance of current and future
Wi-Fi networks. We discuss the LTE and Wi-Fi coexistence challenges and present
analysis on performance degradation of the Wi-Fi networks at the presence of
LTE.
