What is MT mobile terminal

The technical details of the Mobile Terminal (MT), which plays a crucial role in mobile communication systems:

1. Definition and Components:
   • The Mobile Terminal (MT), also known as the Mobile Station (MS), is a portable electronic device that enables users to communicate, access information, and perform various tasks while on the move.
   • In 2G systems like GSM, the term “Mobile Station” is used, whereas in 3G systems, it is referred to as User Equipment (UE).
   • The MT/MS consists of several components:
     • Mobile Termination (MT):
       • Offers common functions such as:
         • Radio transmission and handover: Facilitates communication with the network.
         • Speech encoding and decoding: Converts voice signals for transmission.
         • Error detection and correction: Ensures reliable data transfer.
         • Signalling: Handles communication with the network for call setup, location updates, etc.
         • Access to the SIM: Interacts with the Subscriber Identity Module (SIM).
       • The IMEI (International Mobile Equipment Identity) code is attached to the MT.
       • Equivalent to the network termination of an ISDN (Integrated Services Digital Network) access.
     • Terminal Equipment (TE):
       • Any device connected to the MT that offers services to the user.
       • Does not contain functions specific to GSM.
     • Terminal Adapter (TA):
       • Provides access to the MT as if it were an ISDN network termination with extended capabilities.
       • Communication between the TE and MT over the TA occurs using AT commands.
     • Subscriber Identity Module (SIM):
       • A removable subscriber identification token storing the IMSI (International Mobile Subscriber Identity) and other data.
       • Unique key shared with the mobile network operator.
       • In a mobile phone, the MT, TA, and TE are often enclosed in the same case, although their functions may be performed by distinct processors.
2. GSM-Specific Details:
   • In GSM, the MT is composed of the four main components mentioned above.
   • The application processor serves as the TE, while the baseband processor serves as the MT. Communication between both processors occurs over a bus using AT commands, facilitated by the TA.
3. Evolution and Modern Usage:
   • As mobile technology has evolved, the concept of the MT/MS has expanded to include smartphones, tablets, and other portable devices.
   • These devices not only handle voice communication but also provide internet access, multimedia capabilities, and various applications.