Patent ID: 8169976
Filing Date: 2012-05-01
Classification: H04B,H04L,H04W

Abstract:
1. A transmission rate control method for controlling, at a mobile station, a transmission rate of uplink user data to be transmitted via an Enhanced Dedicated Physical Data Channel, comprising: measuring, at a radio base station, a reception power of a dedicated physical control channel transmitted from the mobile station; extracting, at the radio base station, a transmission data block size of the uplink user data from an Enhanced Dedicated Physical Control Channel transmitted from the mobile station; acquiring, at the radio base station, a transmission power ratio of the Enhanced Dedicated Physical Data Channel to the Dedicated Physical Control Channel which corresponds to the extracted transmission data block size; and calculating, at the radio base station, a reception power of the Enhanced Dedicated Physical Data Channel based on the measured reception power of the dedicated physical control channel and the acquired transmission power ratio, wherein the reception power of the Enhanced Dedicated Physical Data Channel is a subset of the total reception power including the Dedicated Physical Data Channel, Dedicated Physical Control Channel, Enhanced Dedicated Physical Data Channel and the Enhanced Dedicated Physical Control Channel; calculating, at the radio base station, a relative transmission rate of the uplink user data based on the calculated reception power of the Enhanced Dedicated Physical Data Channel; notifying, at the radio base station, the relative transmission rate of the uplink user data to the mobile station via a relative transmission rate control channel; controlling, at the mobile station, the transmission rate of the uplink user data based on the notified relative transmission rate of the uplink user data; and calculating, at the radio base station, the relative transmission rate of the uplink user data, based on the compared result of an integrated value of the reception power of the Enhanced Dedicated Physical Data Channel transmitted from a serving mobile station which sets the cell controlled by the radio base station as a serving cell and an integrated value of the reception power of the Enhanced Dedicated Physical Data Channel transmitted from a non-serving mobile station which does not set the cell controlled by the radio base station as a serving cell.