What is LAU (Location Area Update)?

The location update system permits a cell phone to illuminate the cell organization, at whatever point it moves starting with one area region then onto the next. A methodology executed by the versatile to supply the MSC with the Location Area in which the mobile currently resides. UE starts LAU procedure when it recognizes another area region while on roaming. This happens in GSM when a mobile device is moved from one location then onto the next.