Wireless Mesh Network (WMN) - a communications network made up of radio nodes organized in a mesh topology. Clients can be laptops, cell phones, and other devices. Mesh routers forward traffic to/from gateways that may or may not connect to the Internet. This is a good way to communicate with others when the Internet goes down or in any communications emergency situation.
Worldwide Market Shares, Strategies, and Forecasts of Wireless Mesh Network Market from 2014 to 2020 - http://www.asiaprwire.com/worldwide-market-shares-strategies-and-forecasts-of-wireless-mesh-network-market-from-2014-to-2020/