Security procedure in universal mobile telephone service
US6763112B1 · kind B1 · utility
28Cited by
5References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A security procedure for a Universal Mobile Telephone Service (UMTS) mobile communication system includes detecting a communication failure between a Radio Network Controller (RNC) which controls radio coverage within a prescribed geographical area and a Mobile Station (MS) in the geographic area, authenticating the MS and setting a new security parameter in response to the communication failure. The security parameter to be changed may be a ciphering key CK or an integrity key IK. Moreover, the steps of authenticating and setting a new security parameter may be performed separately or simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.