Service-dependent routing of a mobile-terminating call in a...

H - Electricity – 04 – Q

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Details

H04Q 7/38 (2006.01) H04Q 7/20 (2006.01)

Patent

CA 2236697

The present invention relates to service-dependent routing of a mobile- terminating call in a mobile communication system employing a multinumbering scheme. A visitor location register (VLR), as a response to a roaming number request from a home location register (HLR), allocates a roaming number to the call and the roaming number is returned to the HLR and further to a routing exchange (GMSC, EXC) to be used for routing the call to the mobile switching centre (MSC) associated with the VLR. In some cases there may be two different alternative transmission routes between the routing exchange (GMSC) and the MSC. In order to enable the routing exchange to select the appropriate one of these transmission routes for routing the call to the MSC, the roaming number (MSRN) allocated by the VLR contains a part (SERVN) which is dependent on the service required by the call and indicates the appropriate one of the transmission routes (ROUTE_1, ROUTE_2).

La présente invention se rapporte à un acheminement dépendant du service d'un appel à destination d'une station mobile dans un système mobile de télécommunications utilisant un plan de numérotage multiple. Un enregistreur de localisation des visiteurs (VLR), en réponse à une demande de numéro d'abonné itinérant issue par un enregistreur de localisation de rattachement (HLR), attribue un numéro itinérant à l'appel et ce numéro itinérant est renvoyé vers le HLR puis vers un central d'acheminement (GMSC, EXC) pour permettre l'acheminement de l'appel vers le centre de commutation mobile (MSC) associé au VLR. Dans certains cas, il peut exister deux itinéraires différents de transmission possibles entre le central d'acheminement (GMSC) et le centre de commutation mobile (MSC). Afin de permettre au central d'acheminement de sélectionner l'itinéraire le plus approprié parmi ces itinéraires possibles pour l'acheminement de l'appel vers le centre de commutation mobile (MSC), le numéro itinérant (MSRN) attribué par le VLR contient une partie (SERVN) qui dépend du service requis par l'appel et indique l'itinéraire le plus approprié parmi les itinéraires de transmission possibles (ROUTE_1, ROUTE_2).

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