Wireless LANs Wireless communication systems 7 Sensor networks 4 Cellular telephone systems 2 IEEE 802.11 (Standard) 2 Mobile communication systems 2 Personal communication service systems 2 Quality control 2 Ad hoc networks (Computer networks) 1 Bluetooth technology 1 Fault tolerance (Engineering) 1 Local area networks (Computer networks) 1 Mobile computing 1 Network performance (Telecommunication) 1 Radio frequency allocation 1 Resource allocation 1 Routers (Computer networks) 1 Security measures 1 TCP/IP (Computer network protocol) 1 Technological innovations 1 Wireless Internet 1 Wireless metropolitan area networks 1