Functional Sections - The UMTS LTE system is composed of three key sections:
- User Equipment (UE) - A device that converts media to and from UMTS LTE radio signals.
- UMTS Terrestrial Radio Access Network (UTRAN) - Assemblies that convert digital signals to radio signals that can be sent to mobile devices and receive radio signals that can be converted back to their digital form. The UTRAN is divided into enhanced node B base stations - eNB - parts that are located at the cell site and radio network controllers - RNC - that coordinate the distribution and reception of communication connections.
- Core Network (CN) - The CN performs the interconnection between the base station parts and other networks such as the public switched telephone network - PSTN - and public Internet. The core network is composed of high speed packet data switches, databases, and administrative control services.