More on 4 Layers model Integrated Application Smart Logistic Smart Grid Green Building Smart Transport Env. Monitor Information Processing Data Center Search Engine Smart Decision Info Security Data Mining Network WWAN WMAN Construction Internet WPAN WLAN Sensing and Identification GPS Smart device RFID SensorMore on 4 Layers Model Smart Logistic Smart Grid Green Building Smart Transport Env. Monitor Data Center Search Engine Smart Decision Info. Security Data Mining WWAN WPAN WMAN WLAN Internet GPS Smart Device RFID Sensor Sensor Integrated Application Information Processing Network Construction Sensing and Identification