Roaming method and devices appropriate therefor
US6738622B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/26
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Telecommunication method which enables a subscriber of a home mobile radio network (HPLMN) to connect to a visited mobile radio network (VPLMN, VPLMN′) without a roaming agreement with the home mobile radio network (HPLMN) in that the subscriber is assigned a first mobile subscriber identification (IMSI1) from the number range of his home mobile radio network (HPLMN) and a second IMSI number (IMSI2) from the number range of a partner network (PPLMN), the partner network having additional roaming agreements, and a common call number (MSISDN) being allocated to the two said IMSI numbers (IMSI1, IMSI2). The two IMSI numbers (IMSI1, IMSI2) may preferably be stored on a common or on different identification modules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.