What is the Home Location Register?
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Home location register, or HLR, is a vital component of mobile communication networks. It houses a treasure trove of subscriber information and facilitates everything from call routing to seamless roaming capabilities for users across geographic boundaries. It’s an indispensable piece of the mobile ecosystem and understanding its fundamental role in the network is crucial to maintaining efficient operations and delivering reliable connectivity to users around the world.
Quick Definition
HLR home location register of information concerning subscribers who are allowed to utilize the global system for mobile communications (GSM) network. It stores information such as the International Mobile Subscriber Identity (IMSI) and the mobile station international subscriber directory number (MSISDN), among other relevant details. An HLR also contains authentication details that can be used to verify the user during network access. It also maintains a service profile for each subscriber, including the types of services they are authorized to use.
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When a user connects to the network, the mobile switching center (MSC) of the visited network first checks for an entry in the HLR. If one is found, the MSC then communicates with the visiter location register (VLR) to verify the subscriber’s authenticity and determine whether they are eligible to continue using the network.
This process allows a user to switch to a new network without losing their phone number or sacrificing data services. However, robust security measures are necessary to protect the information stored in an HLR from unauthorized access and breaches. As a result, HLRs are subject to the same stringent security standards as mobile devices themselves.…