Sign in Subscribe

2g core network

Last updated on 

The 2G core network refers to the second generation of mobile telecommunications technology and the associated core network infrastructure. 2G networks were introduced in the 1990s and brought digital voice communication, improved capacity, and better security compared to the earlier analog systems.

Key components of the 2G core network include:

  1. Mobile Switching Center (MSC): The MSC is a central component in the core network responsible for call switching and controlling functions. It manages the connection between mobile devices and connects calls within the mobile network or to external networks, such as the Public Switched Telephone Network (PSTN).
  2. Home Location Register (HLR): The HLR is a database that stores subscriber information, including user profiles, current locations, and service subscriptions. It plays a crucial role in call setup and mobility management.
  3. Visitor Location Register (VLR): The VLR is a temporary database that stores information about subscribers currently within the coverage area of a particular MSC. It communicates with the HLR to retrieve subscriber data when needed.
  4. Authentication Center (AUC): The AUC provides security functions by authenticating users and ensuring the confidentiality of their communication. It generates and verifies encryption keys to protect voice and data transmissions.
  5. Equipment Identity Register (EIR): The EIR is a database that stores information about mobile devices, including their unique International Mobile Equipment Identity (IMEI) numbers. It helps identify stolen or unauthorized devices.
  6. Base Station System (BSS): The BSS comprises Base Station Controllers (BSC) and Base Transceiver Stations (BTS). The BSS is responsible for managing the radio interface between mobile devices and the core network.
  7. SMS Center (SMSC): The SMSC handles the storage, forwarding, and delivery of Short Message Service (SMS) messages between mobile devices.

2G technologies, such as GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access), laid the foundation for the evolution of mobile networks. While 2G networks have been largely succeeded by 3G, 4G, and now 5G technologies, they continue to play a role in certain regions and applications.