Wireless communication systems Routing protocols (Computer network protocols) 5 Sensor networks 3 Wireless sensor networks 3 Roaming (Telecommunication) 2 Ad hoc networks (Computer networks) 1 Cellular telephone systems 1 Computer network protocols 1 Computer networks 1 Design and construction 1 Energy consumption 1 General Packet Radio Service 1 Global system for mobile communications 1 IEEE 802.11 (Standard) 1 Management 1 Mobile communication systems 1 Standards 1 TCP/IP (Computer network protocol) 1 Wireless Application Protocol (Computer network protocol) 1 Wireless LANs 1 Wireless metropolitan area networks 1