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PROCÉDÉ ET APPAREIL POUR L'UTILISATION D'UNE PLURALITÉ DE PORTEUSES MONTANTES ET D'UNE PLURALITÉ DE PORTEUSES DESCENDANTES
PROCÉDÉ ET APPAREIL POUR L'UTILISATION D'UNE PLURALITÉ DE PORTEUSES MONTANTES ET D'UNE PLURALITÉ DE PORTEUSES DESCENDANTES
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摘要
A method and apparatus for utilizing a plurality of uplink carriers and downlink carriers are disclosed. A wireless transmit/receive unit (WTRU) activates a primary uplink carrier and a primary downlink carrier and activates or deactivates a secondary uplink carrier based on a signal from a network or upon detection of a pre-configured condition. The WTRU may deactivate the secondary uplink carrier based on inactivity of the E-DCH transmission, a buffer status, a channel condition, or power constraints. When the secondary uplink carrier is activated, dedicated physical control channel (DPCCH) transmission may be initiated predetermined time periods prior to initiating E-DCH transmissions. The initial DPCCH transmission power may be set based on a DPCCH transmission power on the primary uplink carrier or to a value signaled by a network. A default grant value may be used for initial E-DCH transmission upon activation of the secondary uplink carrier.
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