Patent ID: 8208402

Claim:
A method of changing a radio access configuration between a terminal and a radio network controller (RNC), the method comprising: initiating, by the RNC, a second configuration that is related to a first configuration for the terminal; transmitting, from the RNC to a Node B, a second configuration commit message including an indication for the Node B to check whether the terminal is using a changed uplink scrambling code, wherein the changed uplink scrambling code is a scrambling code that is different than a scrambling code utilized by the first configuration, and wherein the changed uplink scrambling code is to be applied for the second configuration; transmitting, from the RNC to the terminal, a second configuration setup message and a time indication message, wherein the time indication message includes application time information and outage time information, wherein the application time information indicates when the terminal should apply the second configuration, and the outage time information indicates a duration of time between transmitting the time indication message and a time when the terminal should apply the second configuration, wherein the duration of time is a time during which the terminal should continue uplink transmission even when downlink transmission stops; comparing a power of a radio resource corresponding to the first radio configuration and a power of a radio resource corresponding to the second radio configuration; and determining, by the RNC, when the terminal will apply or has applied the second configuration based on reception of a first radio signal indicating a channel status from the terminal and of a message indicating a channel status from the Node B, wherein the determining is performed when the power of the radio resource corresponding to the first radio configuration is greater than the power of the radio resource corresponding to the second radio configuration.