Guard Interval’s Length Prediction in 802.11ay Systems in Indoor Environments

The optimisation of 60 GHz Wireless Networks requires reducing the end-to-end (E2E) latency, which depends very much on the configuration of the physical layer protocols. In the IEEE 802.11ay, the standard for the 60 GHz frequency band local area networks (LAN), three lengths of guard intervals (GI) are established. Its proper selection in every environment will affect the E2E latency and the overall performance. This work proposes a method to choose the length of GI, based on the Root Mean Square Delay Spread (RMS-DS) prediction model and the indoor environment geometry, to optimise the latency of the wireless access system.