Transmission rate control method, mobile station and radio network controller

Abstract

The present invention can flexibly adjust trade-off between the radio network capacity and the radio quality by changing increase step of uplink user data in accordance with the congestion of uplink or the uplink user data type. A transmission rate control method according to the present invention includes the steps of; notifying, at a radio network controller RNC, an increase pattern of the transmission rate of the uplink user data to a mobile station UE, when setting, with the mobile station UE, a user data channel connection for transmitting the uplink user data and increasing, at the mobile station UE, the transmission rate of the uplink user data in accordance with the increase pattern, when receiving, from a radio base station Node B, a relative rate control channel RGCH for indicating that the transmission rate of the uplink user data should be increased.

1 - 4 . (canceled) 
     
     
         5 . A radio network controller used in a transmission rate control method for controlling a transmission rate of uplink user data, comprising an increasing step notification section configured to notify, to a mobile station, information for determining an increasing relative transmission rate step size corresponding to each transmission rate of the uplink user data, when setting, with the mobile station, a user data channel connection for transmitting the uplink user data, wherein an increasing relative transmission rate step size is a step size of the uplink user data to be changed based on a relative grant command. 
     
     
         6 . The radio network controller according to the  claim 5  wherein, the increasing step notification section configured to notify, to the base station, information for determining the increasing step corresponding to each transmission rate of the uplink user data, when setting a connection with the radio base station.