摘要 |
Increment steps of upstream user data are changed in accordance with the uplink traffic status and/or the types of the upstream user data, thereby flexibly adjusting the tradeoff between the radio channel capacity and the radio quality. A transmission rate control method comprises a step in which when establishing the connection of a user data channel, on which upstream user data is transmitted, to a mobile station (UE), a radio channel control station (RNC) notifies the mobile station (UE) of an increment pattern of the transmission rate of the upstream user data; and a step in which when receiving, from a radio base station (Node B), a relative rate control channel (RGCH) indicative of the necessity of increasing the transmission rate of the upstream user data, the mobile station (UE) increases the transmission rate of the upstream user data in accordance with the increment pattern notified of.
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