Monitoring of call information in a wireless location system

Details Monitoring of call information in a wireless location system Monitoring of call information in a wireless location system

H - Electricity

04

W

H04W 64/00 (2009.01) H04W 8/26 (2009.01) G01S 5/04 (2006.01) G01S 5/06 (2006.01)

Patent

CA 2454111

In an overlay Wireless Location System, an Abis interface is monitored to obtain information used to locate GSM phones (S116). Signaling links of the Abis interface are passively monitored to obtain certain information, such as control and traffic channel assignment, called number, and mobile identification, which is not available from the GSM air interface of the reverse channel (S110-S116). This approach also applies to IDEN and can be broadened to include CDMA systems where the GSM architecture has been used and the system includes a separated BTS to BSC interface.

Dans une zone de recouvrement de système de localisation sans fil, une interface Abis est contrôlée afin que soient obtenues des informations utilisées pour localiser des téléphones GSM (S116). Des liaisons de signalisation de l'interface Abis sont contrôlés de manière passive afin que soient obtenues certaines informations, telles que l'attribution du canal de trafic et de commande, le numéro appelé, et l'identification du mobile, informations qui ne sont pas disponibles à partir de l'interface hertzienne GSM du canal retour (S110-S116). Cette approche s'applique également aux systèmes IDEN et peut être élargie à des systèmes CDMA utilisant une architecture GSM, et le système comporte une station de base (BTS) séparée de l'interface contrôleur de station de base (BSC).

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