US6674860B1

4G,3G,2G

Title

Method and arrangement for managing a service in a mobile communications system

Application Number:

US19990354187

Publication Date:

06-01-2004

Family ID:

Application Date:

15-07-1999

Publication Country:

US

Priority Date:

17-07-1998

Declaring Company:

Abstract  Abstract

The invention pertains to a method and arrangement for managing a service in a mobile communications system mobile station and an intelligent module in a mobile station. An idea of the invention is that the data needed in the mobile station for a mobile communications service are transferred in encrypted form to several mobile stations at a time. The encryption is based on a key which is transferred individually to mobile stations. Applied to mobile station location this means that the location of a mobile station is determined in the mobile station by means of the timing difference of the signals received from at least two (preferably at least three) base stations and on the basis of the location data of said base stations. The location data are transferred to the mobile station in encrypted form so that they can be utilized only by mobile stations to which the operator has delivered a decryption key needed to decrypt the location data. The decryption key is transferred preferably individually to each mobile station. Decryption may occur in an intelligent module of a mobile station in which case no location data appear in a non-encrypted form outside the intelligent module resulting in data confidentiality. If chargeability is the only requirement decryption and location calculation may also take place elsewhere in the mobile station. The decryption key can be changed in which case the new decryption key is transferred to the mobile station advantageously periodically in conjunction with the location update procedure.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.