What is a 4th-generation system ?
2nd gen: Mobile telephony (Now)
- speech service – low data-rates
- wide area coverage
3rd gen: Mobile multimedia comm. (2003)
- moderate data rates – wide range of bearer services (2Mbit/s)
- local/wide area coverage
4th gen: Personal Computing and Comm. (2007?)
- high data rates (100 Mbit/s)
- support of high quality video/data services
- local/wide area coverage