Mesh networking is based on a set of repeaters that can be placed strategically around a building (usually a home) to ensure a good Wi-Fi signal in every room. Qualcomm has just announced its latest series of chipsets for this use-case, which, as it claims, can greatly improve on speeds while reducing the size of each new mesh point based on it.
https://www.notebookcheck.net/Qualcomm-s-latest-solution-for-mesh-networking-may-deploy-gigabit-level-Wi-Fi-to-the-entire-home-with-smaller-footprints.499559.0.html