H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 7/38 (2006.01)
Patent
CA 2389189
The invention relates to a mobile communication system comprising: mobile stations (MS, MS'), a mobile switching center (MSC1), and a subscriber register (VLR1) containing subscriber data, which includes location information indicating the location of mobile stations. In order to detect the presence of a fraudulent mobile station the system comprises: monitoring means (1) for monitoring the processes which trigger location information changes in said subscriber register (VLR1), and detecting means (2) for detecting and indicating the presence of a fraudulent mobile station (MS') if a location information change has been triggered by a process which should not trigger a change of location information in said subscriber register (VLR1).
L'invention concerne un système de communication mobile comprenant : des stations mobiles (MS, MS'), un centre de commutation mobile (MSC1) et un registre (VLR1) d'abonnés contenant des données d'abonnés, lesquelles comprennent des informations de position indiquant la position des stations mobiles. Afin de pouvoir détecter la présence d'une station mobile frauduleuse, ce système comprend : des moyens (1) de surveillance permettant de surveiller les procédures déclenchant des modifications des informations de position dans ledit registre (VLR1) d'abonnés, et des moyens (2) de détection permettant de détecter et d'indiquer la présence d'une station mobile (MS') frauduleuse lorsqu'une modification de l'information de position a été déclenchée par une procédure qui ne devrait par entraîner de modification de l'information de position dans ledit registre (VLR1) d'abonnés.
Lohtaja Jarkko
Paldan Esko
Nokia Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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