UMTS, also known as 3G, is one of the standards of the third generation mobile communications. Originally, the ETSI (European Telecommunications Standards Institute) established the UMTS standard. Today it is maintained by the 3rd Generation Partnership Project (3GPP). Research and development continued unabated, modifying 3G. For example, HSDPA increases the maximum data reception (downlink) rate. Similarly, HSUPA improves the data transmission rate.
3G-LTE (Long Term Evolution) represents the transition path from 3G/UMTS to 4G. It comprises the core technologies that will, in time, develop into true 4G. The standard is designed from the outset to offer expandability and scalability in occupied frequency resources (bandwidth) and the number of antennas. The next phase, known as LTE-Advanced (LTE-A) will make it possible to increase the bandwidth and the number of antennas.
This enhanced mobile communications standard will find application in the wireless transmission of IP data for mobile Internet access, particularly in areas with poor DSL coverage. LTE is also suitable for the transmission of voice services (VoIP), video telephony and online games, thanks to its relatively low latencies and minimum-delay performance.