Patent ID: 8259580

Claim:
A method implemented in a wireless transmit/receive unit (WTRU) for setting a happy bit on an enhanced dedicated channel (E-DCH) dedicated physical control channel (E-DPCCH), the method comprising: determining (1) whether the WTRU is transmitting as much scheduled data as allowed by a current Serving_Grant in E-TFC selection, (2) whether the WTRU has enough power available to transmit at a higher data rate, and (3) based on a same power offset as a currently selected E-DCH transport format combination (E-TFC) for transmission in a same transmission time interval (TTI) as the happy bit, whether total E-DCH buffer status (TEBS) would require more than Happy_Bit_Delay_Condition milliseconds (ms) to be transmitted with the current Serving_Grant.times.a ratio of active processes to a total number of processes; and on a condition that the criteria (1) through (3) are met, setting the happy bit to “unhappy”, wherein the criteria (2) is evaluated by: identifying an E-TFC that has a transport block size at least a variable number (x) bits larger than a transport block size of the currently selected E-TFC on a condition that an improved medium access control entity (MAC i/is) for E-DCH is configured; and determining whether the identified E-TFC is supported based on a same power offset as the currently selected E-TFC.