Telefonaktiebolaget Lm Ericsson (publ)

Shohreh Savoli

Donald Joong

Hung Tran

Suhail Hasan

A method and a Packet Data Service Node (PDSN) of restricting geographical use of a service for a mobile terminal (MT) in a packet data telecommunications network. The PDSN receives from an access node (AN), a registration request message having a cell information for requesting. The PDSN translates the cell information into a zone ID, stores the zone ID in a first table and sends to a AAA server, an access request message for authenticating the MT. PDSN further receives from the AAA server, an access accept message for authorizing the MT to receive packet data service, wherein the access accept message includes an allowance information. Afterwards the PDSN compares the allowance information with the zone ID. If the allowance information is different from the zone ID in the first table, the PDSN set up a filter for the MT and rejects packet data for the requested packet data service.

Geographical restriction of services in a packet data telecommunications network

A method of call control in a packet-switched radio telecommunication network that minimizes delays in launching a voice call from a first Internet Protocol (IP)-based mobile station (MS) to a second IP-based MS. The method includes the steps of preventing voice traffic from being routed to an Internet Service Provider (ISP), and setting up an optimized path for voice traffic from the first MS to the second MS. The optimized path may be set up by creating a shortest route tunnel between a first serving GPRS service node (SGSN ) serving the first MS and a second SGSN (SGSN ) serving the second MS. Alternatively, the tunnel may be established between the base station controllers (BSCs) of each MS's serving radio base station.

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Dollard des Ormeaux, Canada

Shohreh Savoli