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Location Area Identity

Overview#

Location Area Identity (LAI) internationally Unique Identifier is used for location updating of mobile subscribers.

Location Area Identity is composed of:

Location Area Identity is broadcast regularly through a Broadcast Control CHannel (BCCH). A Mobile Device stores it in the SIM Card. If the mobile station is moving and notices a change of LAI, it will issue a location update request, thereby informing the Home Location Register of its new LAI. This allows the provider to locate the Mobile Device in case of an incoming call.

More Information#

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