This document discusses the implementation of the 802.11s Power Save Mode in the NS-3 network simulator. It begins with background on 802.11s mesh networking and power saving approaches. It describes the objectives of developing a routing algorithm based on 802.11s PSM aspects and implementing it in NS-3. Details are provided on extending NS-3's mesh and energy models to support this work. The document outlines next steps of creating a PSM infrastructure, implementing the routing algorithm, and testing the implementation.