| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device to utilize a plurality of uplink carriers and a plurality of downlink carriers.SOLUTION: A WTRU (wireless transmit/receive unit) activates a primary uplink carrier and a primary downlink carrier whilst it activates or deactivates a secondary uplink carrier on the basis of a signal from a network or at a preset status detection. The WTRU deactivates the secondary uplink carrier on the basis of the deactivation of an E-DCH (enhanced dedicated channel) transmission, the buffer status, the channel condition or the power constraints. When the secondary uplink carrier is activated, the DPCCH (dedicated physical control channel) transmission is started at a prescribed time before starting the E-DCH transmission. |
