Wireless sensor networks Sensor networks 5 Wireless communication systems 5 Routing protocols (Computer network protocols) 4 Computer network protocols 3 Energy consumption 3 Routing (Computer network management) 2 Security measures 2 Computer networks 1 Computer scheduling 1 Design and construction 1 Equipment and supplies 1 Mathematical model 1 Multicasting (Computer networks) 1 Renewable energy sources 1 Routers (Computer networks) 1 Safety measures 1 Telecommunication 1 Traffic 1 Vehicular ad hoc networks (Computer networks) 1