Mobile station

A mobile station (MS)[1][2] comprises all user equipment and software needed for communication with a mobile network.

In 3G systems, a mobile station (MS) is now referred to as user equipment (UE).

In GSM, a mobile station consists of four main components: In a mobile phone, the MT, TA and TE are enclosed in the same case.

However, the MT and TE functions are often performed by distinct processors.

The application processor serves as a TE, while the baseband processor serves as a MT, communication between both takes place over a bus using AT commands, which serves as a TA.