Methods and apparatus for establishing a call in a cellular mobile network
US6957060B1 · kind B1 · utility
18Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2001 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | May 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
It is desirable to allow mobile stations such as mobile telephones or cell phones to connect to a wireless cellular network even without the presence of a SIM card or other identification information. This is desirable for example, for access to emergency services. By configuring the mobile station to be able to populate replies to request for identification information during call set up which are received from the network, it is possible to avoid redesigning the network while providing “SIM-less” access to the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.