Dual home location registers in a mobile radio system
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United States of America Patent
Stats
-
Sep 14, 1999
Grant Date -
N/A
app pub date -
Apr 30, 1996
filing date -
Apr 30, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pair of home location registers (HLRs) are associated with each other by assigning two capability codes. A first capability code is utilized to provide system support by one of the HLRs whenever the other HLR fails. The second capability code is utilized to constantly update each other's database with the latest subscriber information. Whenever a particular HLR fails, the associated Signal Transfer Points (STPs) reroutes the incoming signals intended for that failed HLR to its mate HLR. The mate HLR compares the received signals' destination point code with its first capability code to determine whether it is allowed to process this signal. If there is a match, the mate HLR automatically and transparently processes the received signal without service interruption or delay. Whenever one of the HLRs receives a new subscriber data, the same data are communicated to the other HLR by using its second capability code as the destination address.
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