MSC: MSC stands for Mobile Switching Center that will connects calls by switching the digital voice data packets from one network to another network. It will also give the data that is required to support mobile service benefactors. HLR in GSM network: The HLR stands for Home Location Register; it is the reference database for benefactor parameters. The Home Location Register is an integral component of Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) and Global System for Mobile Communications (GSM) network. It maintain the benefactor information like user name, address, account status, phone number etc. If the mobile user is currently roaming in another network, the HLR contains enough data to obtain an address in the visited network to which a call to the mobile user should be routed. VLR in GSM network: The VLR stands for Visitor Location Register; it has a copy of the data which is stored at the HLR. The database of VLR contains some duplicate data and also more precise data related to the benefactor remaining contained by the VLR coverage. The VLR entries come and go as mobile users enter and leave the network. It is normally co-located with the MSC that coordinates the setup of a call from and to the visited network.

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Chapter 7, Problem P16P

Program Plan Intro

MSC:

MSC stands for Mobile Switching Center that will connects calls by switching the digital voice data packets from one network to another network.

It will also give the data that is required to support mobile service benefactors.

HLR in GSM network:

The HLR stands for Home Location Register; it is the reference database for benefactor parameters.

The Home Location Register is an integral component of Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) and Global System for Mobile Communications (GSM) network.

It maintain the benefactor information like user name, address, account status, phone number etc.

If the mobile user is currently roaming in another network, the HLR contains enough data to obtain an address in the visited network to which a call to the mobile user should be routed.

VLR in GSM network:

The VLR stands for Visitor Location Register; it has a copy of the data which is stored at the HLR.

The database of VLR contains some duplicate data and also more precise data related to the benefactor remaining contained by the VLR coverage.

The VLR entries come and go as mobile users enter and leave the network.

It is normally co-located with the MSC that coordinates the setup of a call from and to the visited network.

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