The different generations of Cellular Networks
2G
3G
Voice + Data
Key insight: new cellular data network operates in parallel except at edge with existing cellular voice network
- Voice network unchanged in core
- Data network operates in parallel
4G
Differences from 3G
- All IP core: IP packets tunneled (through core IP network) from BS to gateway
- No separation between voice and data - all traffic carried over IP core to gateway
This is how 3G works:
5G
