Patent · US Expired

Authentication for analog communication systems

US5557676A · kind A · utility

24Cited by

13References

27Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Jonas Naslund · Sandviken, SE
Thomas Johansson · Bissenkamp, SE
Johan Dahlstrom · Sollentuna, SE

Key dates

Filing date	Apr 20, 1995
Grant date	Sep 17, 1996
Priority date	—
Expiry date	Apr 20, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH04W12/71
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and system for authenticating the identification of mobile stations during system access is disclosed. A modified electronic serial number, including an encoded COUNT value, sent by the mobile station is compared with a modified electronic serial number corresponding to that mobile station stored in system memory. In this way, fraudulent use can be deterred and detected without changing the specification of information to be transmitted over the air interface in existing radiocommunication systems.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.