Mobile Handset Networking Overview 2018/9/13

Mobile Handset Networking Handsets communicate with each other and with service providers via many networking technologies There are two “classes” of these technologies: Cellular telephony Wireless networking Most handsets support both, some also support physical connections such as USB

Wireless Communication Channels Name Distance Frequency Data Rate (down) GSM 35 km 850, 900, 1800, 1900 MHz 80 kb/s (GPRS), 236 kb/s (EDGE) LTE 30 km–100 km 700 MHz–2.6 GHz >100 Mb/s WiFi 100 m 2.4 GHz (802.11b/g), 5 GHz (802.11a) 54 Mb/s 2.4 GHz, 5 GHz 450 Mb/s Bluetooth 10 m 2.4 GHz, Frequency Hopping 2.1 Mb/s (up to 24 Mb/s) NFC < 4 cm 13.56 MHz 106 kb/s–424 kb/s 3

Components Wireless communication protocols TCP/IP over wireless Localization Power management Mobile content sharing Mobile social networking Security and Privacy 2018/9/13 4 4