METHOD AND APPARATUS FOR CONTROLLING RATE OF VOICE SERVICE IN A MOBILE COMMUNICATION SYSTEM SUPPORTING VOICE SERVICE VIA PACKET NETWORK

摘要

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 include s 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 rat e, determining a downlink rate according to the control message; setting a Chan ge Mode Request (CMR) field of an uplink Voice over Internet Protocol (VoIP) packet according to the downlink rate, and transmitting the uplink VoIP pack et from the terminal to the RNC; if the received control message indicates control of an uplink rate, determining an uplink rate according to the contr ol 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 upli nk VoIP packet from the terminal to the RNC.