There&#x27;s LoRaWAN. It&#x27;s becoming very popular for city-wide IoT networks, and there&#x27;s an mBed compatible board so it is easy to use.<p><a href="http:&#x2F;&#x2F;www.multitech.com&#x2F;brands&#x2F;multiconnect-mdot" rel="nofollow">http:&#x2F;&#x2F;www.multitech.com&#x2F;brands&#x2F;multiconnect-mdot</a><p><a href="http:&#x2F;&#x2F;thethingsnetwork.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;thethingsnetwork.org&#x2F;</a>