Method and apparatus for controlling rate of voice service...

H - Electricity – 04 – L

Patent

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H04L 12/66 (2006.01)

Patent

CA 2611642

A method for controlling a rate of a voice service in a mobile communication system supporting the voice service via a packet network. The method includes the steps of receiving a control message at a terminal from a radio network controller (RNC); if the control message indicates control of a downlink rate, determining a downlink rate according to the control message; setting a Change Mode Request (CMR) field of an uplink Voice over Internet Protocol (VoIP) packet according to the downlink rate, and transmitting the uplink VoIP packet from the terminal to the RNC; if the received control message indicates control of an uplink rate, determining an uplink rate according to the control message; and generating an uplink VoIP packet including uplink voice data generated according to the determined uplink rate and frame type (FT) information indicating the determined uplink rate, and transmitting the uplink VoIP packet from the terminal to the RNC.

Cette invention concerne un procédé de gestion du débit d'un service vocal mettant en oeuvre un système de communication mobile via un réseau par paquets. Ce procédé englobe les opérations suivantes: réception dans un terminal d'un message de commande émanant d'un contrôleur de réseau radio (RNC); si ce message concerne un débit de liaison descendante, détermination dudit débit en fonction du message reçu; détermination d'un champ de demande de mode de changement (Change Mode Request /CMR) pour un paquet de liaison montante d'un système vocal sur Internet (VoIP) en fonction du débit de liaison descendante; et transmission du paquet VoIP en liaison montant du terminal au RNC; si le message de commande reçu indique la commande d'un débit montant, détermination d'un tel débit en conséquence; et production d'un paquet VoIP de liaison montante rendant compte du débit déterminé de liaison montante et d'informations de type trame sur ledit débit, et transmission du paquet VoIP de liaison montante du terminal au RNC.

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