Looking at the HLR/VLR database used in GSM how does this architecture limit the scalability in terms of user, especially moving users? Explain the control channel of GSM.

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written 7.8 years ago by

meghalikalyankar • 2.3k

modified 3.9 years ago by

pedsangini276 • 4.8k

Subject: Mobile Communication and Computing

Topic: GSM cellular telephony-architecture and system aspects

Difficulty: High

mobile communication

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written 7.8 years ago by

meghalikalyankar • 2.3k

GSM only knows a two-layer hierarchy.
The network operator stores all customer information in their HLR, all relevant information about logged-in users for a certain region are stored in the corresponding VLR.
The HLR has a capacity of several million users, and a VLR up to one million.
If a …

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