Patent ID: 7773994

Claim:
A method for transmitting uplink data by user equipment (UE) in a mobile telecommunication system which supports Uplink Dedicated Channel (DCH) and Enhanced Uplink Dedicated Channel (E-DCH) for an uplink service, the E-DCH being enhanced in comparison with the DCH, the UE moving to a location where an active set of cells of the UE include at least two cells, the active set of cells of the UE being a set of cells that the UE is simultaneously connected to, the method comprising the steps of: configuring a first radio bearer comprising the DCH and a second radio bearer comprising the E-DCH for the uplink service to be transmitted; determining whether the active set of cells of the UE comprises at least one cell supporting the E-DCH; transmitting the uplink data through the first radio bearer if no cell in the active set of cells of the UE supports the E-DCH; and transmitting the uplink data through the second radio bearer if the active set of cells of the UE comprises at least one cell supporting the E-DCH.