Intro to 3G Cellular Systems and UMTS overview David Tipper. – Basically overlay network of data service on 2G networks (voice still circuit switched). Intro to 3G Cellular Systems and UMTS overview David Tipper. – Basically overlay network of data service on 2G networks (voice still circuit switched). Basic Introduction to GSM Architecture and. It has highly evolved from the 2G to 3G and now moving on 4G in India and 5G. Index Terms-Network element.

3G is the third generation cellular system. Here we will discuss about UMTS (Universal Mobile Communication System) which is a 3G system.

Foundation of Cellular Concept In 1972 Bell Labs registered a patent which was the foundation for 2nd generation and 3rd generation cellular technologies. The Idea: Instead of base stations that cover large areas, each base station should cover a small area.

This way the same frequency can be reused. The patent can be found at the following link: Frequency Reuse UMTS Requirements 2 nd Generation Mobile systems were mainly developed for Voice based services.

Later some data services were added to that system. But 3G was developed taking the future into consideration.

The main requirements for 3G are listed below: • Bit rate up to 2 Mbps. • Variable bit rate support. • Multi service support. Example: Browsing at the time of voice communication.

Bosch Gsh 11 E Service Manual. • Delay requirements for delay sensitive real time traffic. • Quality requirements from 10% frame error rate to 10 to the power -6. • Inter-system Hand Over.

Handover between 2 nd and 3 rd generation systems. • High spectrum efficiency. • Support of TDD and FDD mode. • Support of location based services. 3gpp Specifications At the high level the 3gpp specifications are structured through different releases. The releases specify a version of system with some particular features. Following are the different releases of UMTS specifications are the most important new features implemented in that release.