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New Location Management for Reducing HLR Overhead Traffic in Mobile Networks


Dong Chun Lee, Hyun Cheul Shin, and Jeom Goo Kim

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Abstract

IS-41 and GSM have a structural drawback: as the number of users increase, home location register (HLR) becomes the bottleneck problem. We propose a new mobility management method, Leaving Trace (LT) scheme, which effectively reduces mobility management cost in mobile network. The basic idea is that putting the VLR ID of the registration area where the terminal currently resides into the registration-cancellation message, the trace of terminals is left in the VLRs visited so that querying to the VLRs rather than to the HLR when the terminal-terminated-call occurs may connect a call. The LT scheme distributes messages to VLRs.


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