Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-10-10
2006-10-10
Eng, George (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S433000, C455S456100, C455S404200, C455S456500, C455S461000, C455S435100
Reexamination Certificate
active
07120451
ABSTRACT:
When a subscriber record is moved from a first HLR to a second HLR that utilizes a different protocol, the wireless communication system sends two queries for location information for the mobile station, one to the first HLR and one to the second HLR, simultaneously. Two responses are received, one from each of the HLRs. The valid response is recorded in a separate table for future use. The invalid response is discarded. The next time a call comes in for the mobile station, the table is traversed to determine if the HLR has been updated for the mobile station. If so, the location request is sent only to the system in the table. If the table does not include information for the called mobile station, simultaneous queries are sent to the first and second HLRs.
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Agarwal Anjana
Gafrick John Matthew
McCormick Mark Alan
Tomasko-Dean Kimberly Sue
Eng George
Lucent Technologies - Inc.
MacIntyre John B.
Phan Huy
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