Gsm Вђ“ Architecture, Protocols And Services Review

Handles the radio link with mobile devices. It includes the Base Transceiver Station (BTS) , which contains the radio transmitters and receivers, and the Base Station Controller (BSC) , which manages radio resources and handovers for multiple BTSs.

Manages radio transmissions over the air interface (Um interface) using a combination of FDMA and TDMA .

GSM uses a layered protocol structure for communication between the mobile station and the network:

The GSM network architecture is divided into three primary subsystems that manage communication, switching, and operations:

The central node for call routing and management.