The main functions of a BSC in a GSM network include:
- Controlling the base stations (BTS) within its coverage area: The BSC sends commands to the BTSs to configure them, control their power levels, and manage the handovers of mobile devices between cells.
- Managing radio resources: The BSC allocates radio channels to mobile devices, manages the frequency hopping sequences, and controls the power levels of the BTSs to ensure efficient use of the available spectrum.
- Handling call processing: The BSC is responsible for setting up and maintaining calls between mobile devices. It handles the signaling between the mobile devices and the network, performs authentication and encryption of communications, and manages the handover of calls between BTSs.
- Interfacing with other network elements: The BSC communicates with other network elements such as the Mobile Switching Center (MSC), which handles the call routing and switching functions, and the Network Management System (NMS), which provides overall network management and monitoring.
The BSC is a crucial component of a GSM network, ensuring efficient and reliable communication between mobile devices and the network infrastructure.