3G is the third generation of tele standards and technology for mobile networking, superseding 2.5G. It is based on the International Telecommunication Union (ITU) family of standards under the IMT-2000.[1]
3G networks enable network operators to offer users a wider range of more advanced services while achieving greater network capacity through improved spectral efficiency. Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment. Additional features also include HSPA data transmission capabilities able to deliver speeds up to 14.4 Mbit/s on the downlink and 5.8 Mbit/s on the uplink.
Unlike IEEE 802.11 networks, which are commonly called Wi-Fi or WLAN networks, 3G networks are wide-area cellular telephone networks that evolved to incorporate high-speed Internet access and video telephony. IEEE 802.11 networks are short range, high-bandwidth networks primarily developed for data.
Contents[hide]
1 Implementation and history
1.1 UMTS terminals
1.2 Speed
1.3 Network standardization
1.3.1 IMT-2000 standards and radio interfaces
1.3.2 Advantages of a layered network architecture
1.4 3G evolution (pre-4G)
2 Evolution from 2G to 3G
2.1 From 2G to 2.5G (GPRS)
2.2 From 2.5G to 2.75G
2.3 From 2.75G to 3G
2.4 Migrating from GPRS to UMTS
3 Security
4 Issues
5 See also
6 Further reading
7 References
//
3G networks enable network operators to offer users a wider range of more advanced services while achieving greater network capacity through improved spectral efficiency. Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment. Additional features also include HSPA data transmission capabilities able to deliver speeds up to 14.4 Mbit/s on the downlink and 5.8 Mbit/s on the uplink.
Unlike IEEE 802.11 networks, which are commonly called Wi-Fi or WLAN networks, 3G networks are wide-area cellular telephone networks that evolved to incorporate high-speed Internet access and video telephony. IEEE 802.11 networks are short range, high-bandwidth networks primarily developed for data.
Contents[hide]
1 Implementation and history
1.1 UMTS terminals
1.2 Speed
1.3 Network standardization
1.3.1 IMT-2000 standards and radio interfaces
1.3.2 Advantages of a layered network architecture
1.4 3G evolution (pre-4G)
2 Evolution from 2G to 3G
2.1 From 2G to 2.5G (GPRS)
2.2 From 2.5G to 2.75G
2.3 From 2.75G to 3G
2.4 Migrating from GPRS to UMTS
3 Security
4 Issues
5 See also
6 Further reading
7 References
//