The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2023
Filed:
Apr. 29, 2020
System and method for managing visitor location register (vlr) records by updating duplicate records
Telus Communications Inc., Vancouver, CA;
Zhengyun (Michael) Yin, Markham, CA;
TELUS Communications Inc., Vancouver, CA;
Abstract
There is a method and system of removing duplicate Visitor Location Register (VLR) records, and updating the VLR's Global Title Address (GTA) in their Home Location Register (HLR) to avoid duplicate VLR impact to customer service, which may result in missed inbound calls and delayed inbound SMS. Duplicate VLR GTA means that one subscriber has more than one VLR record in different Mobile Switching Stations (MSS) or Mobile Switching Centers (MSC). The valid VLR is identified by comparing the 'last active timestamp' of the same subscriber identity (IMSI, or MSISDN, or MDN) of VLR records obtained from each MSS/MSC. The VLR that has the most recent 'last active timestamp' is used to identify the active/valid VLR which serves the subscriber. Afterwards the non-active VLR records will be deleted, and the VLR's GTA in HLR will be updated as needed.