Serving roaming mobiles with incorrectly programmed identifiers
US7310518B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2003 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for supplying service to mobile stations (MS) (20) utilizing a wireless telecommunications network (A). Each of the MS has a home country and a home network and is programmed with an identifier comprising a number including a set of digits. Each identifier is one of two types including a first type of identifier that uniquely identifies its MS globally via the entire set of digits making up the identifier (e.g., a true International Mobile Station Identity (IMSI)) and a second type of identifier that uniquely identifies its MS within its home country via a subset of least significant digits making up the identifier (e.g., a Mobile Identification Number (MIN)-based IMSI). The method includes: obtaining the identifiers from MS entering the wireless telecommunications network during a study period; collecting a subset of most significant digits from each identifier obtained during the study period; compiling a list of digit patterns, each digit pattern in the list corresponding to one of the subsets of most significant digits collected; receiving identifiers from MS accessing the wireless telecommunications network; and, comparing the subsets of most significant d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.