What type of network is umts?

umts is a universal mobile communications system. As a complete 3G mobile communication technology standard, umts is not limited to defining the air interface. The premise for the implementation of umts is the widespread use of GSM mobile phone systems, which are 2G technologies.

umts introduction:

Universal Mobile Telecommunications System, referred to as UMTS (Universal Mobile Telecommunications System), UMTS is a complete 3G mobile communication technology Standard, UMTS is not limited to defining the air interface.

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In addition to the continuous improvement of WCDMA as the preferred air interface technology, UMTS has also introduced TD-SCDMA and HSDPA technologies. .

A third generation (3G) mobile phone technology. It uses WCDMA as the underlying standard, finalized by 3GPP, and represents Europe's response to ITUIMT-2000's requirements for 3G cellular wireless systems. UMTS is sometimes called 3GSM, emphasizing that it combines 3G technology and is a follow-up standard to the GSM standard. The UMTS packet switching system evolved from the GPRS system, so the system architecture is quite similar.

Features:

UMTS supports a transmission rate of 1920kbps (not the 2Mbps often seen). However, the typical maximum rate in real high-load systems is only about 384Kbps. Even so, the data speed is already higher than the GSM error correction data channel of 14.4kbps or multiple HSCSD channels composed of 14.4 kbps, which can truly achieve affordable mobile WWW access and MMS.

The premise for the realization of UMTS is the widespread use of GSM mobile phone system, which belongs to 2G technology. There is also a way to evolve from 2G called GPRS. (Can be regarded as 2.5G) GPRS supports better data rates (theoretically up to 140.8kbps, in fact it can achieve close to 56Kbps), and data encapsulation is better than connection-oriented. GPRS has been deployed in many GSM networks.

China Unicom's UMTS network has been upgraded to HSDPA, sometimes called 3.5G. It can achieve downlink transmission speeds greater than 10Mbps.

UMTS emphasizes the possibility of mobile video teleconferencing in its market operation, although in fact there are still many potential services that have not been tested and verified.

Other possible applications of UMTS include music downloading and video calling.

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