The VLR (Visitor Location Register) works by managing the temporary details of mobile subscribers who are roaming outside their home network. When a subscriber enters a new network area, the VLR in that area temporarily stores information about the subscriber, such as their location and service availability. It communicates with the HLR (Home Location Register) to authenticate the subscriber and retrieve their permanent profile. This allows the VLR to handle call routing, SMS delivery, and service provisioning while the subscriber is within its coverage area.
How do HLR and VLR work?
HLR (Home Location Register) and VLR (Visitor Location Register) work together to provide seamless service to mobile subscribers. The HLR is the central database that holds permanent subscriber information, such as user profiles, subscription details, and authentication data. When a subscriber roams into a new network area, the VLR in that area communicates with the HLR to validate the subscriber’s identity and retrieve necessary information. The VLR then manages temporary data, including the subscriber’s current location and service status, enabling the network to handle calls, messages, and other services effectively.
The term “VLR GG” might be referring to the functioning or specifics of a VLR in a given network context, though it is not a standard term. Generally, VLR (Visitor Location Register) functions by storing temporary information for subscribers while they are roaming. It updates its records by communicating with the HLR (Home Location Register) to ensure that accurate subscriber information is used for services like call routing and SMS delivery.
The VLR (Visitor Location Register) stores several types of information, including the subscriber’s temporary location, active services, and status. It also holds temporary authentication data and updates on the subscriber’s current network location. This temporary information helps manage and route communications and services while the subscriber is within the VLR’s coverage area.
In GSM (Global System for Mobile Communications), the functions of the VLR (Visitor Location Register) include managing temporary subscriber information, handling call routing, and ensuring service continuity for roaming users. The VLR coordinates with the HLR (Home Location Register) to authenticate users and retrieve their permanent profile. It also updates the subscriber’s location and service status to facilitate seamless communication and service delivery while roaming.
