HLR Insights | Sumble

What is HLR?

HLR stands for Home Location Register. It is a central database containing details of each mobile phone subscriber that is authorized to use the GSM core network. The HLR stores information such as the subscriber's phone number (MSISDN), International Mobile Subscriber Identity (IMSI), service subscriptions, billing information, current location (VLR), and supplementary services. It's a critical component in mobile networks for managing subscriber data and enabling call routing and other services.

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What other technologies are related to HLR?

HLR Competitor Technologies

HSS

HSS (Home Subscriber Server) replaces the HLR in modern networks like LTE/IMS. It performs similar functions but with enhanced capabilities and scalability.

mentioned alongside HLR in 37% (366) of relevant job posts

UDM

UDM (Unified Data Management) is a successor to HLR/HSS, consolidating subscriber data and authentication in modern mobile networks.

mentioned alongside HLR in 21% (112) of relevant job posts

HLR Complementary Technologies

VLR

VLR (Visitor Location Register) works in conjunction with the HLR. The VLR stores temporary information about subscribers who are visiting a particular MSC/VLR service area, retrieving data from the HLR.

mentioned alongside HLR in 70% (57) of relevant job posts

MNP

Mobile Number Portability (MNP) databases are crucial for routing calls and messages correctly when a subscriber changes network providers. HLR interacts with MNP to determine the correct destination network.

mentioned alongside HLR in 51% (51) of relevant job posts

MSC

MSC (Mobile Switching Center) is a core network element responsible for switching and call control. The HLR provides subscriber information to the MSC.

mentioned alongside HLR in 20% (112) of relevant job posts