Method and apparatus for avoiding power scaling in uplink data transmission

An apparatus for wireless communications, comprising:

• means for operating the apparatus in a minimum set enhanced uplink dedicated channel (E-DCH) transport format combination (E-TFC) mode in the TTI, a minimum set transport format combination (TFC) mode, or both the minimum set E-TFC mode and minimum set TFC mode in a multiple radio access bearers (multi-RAB) mode in a transmission time interval (TTI);
• means for determining that first data is scheduled for transmission in an uplink high speed dedicated physical control channel (HS-DPCCH) in the TTI;
• means for determining that second data is scheduled for transmission in an uplink data channel in the TTI;
• and
• means for forgoing building the second data for transmission during the TTI if the apparatus would be transmit-power limited in the TTI when transmitting the first data and second data concurrently while operating in the minimum set E-TFC mode, the minimum set TFC mode, or both the minimum set E-TFC mode and minimum set TFC mode in the multi-RAB mode.

A non-transitory computer-readable medium comprising code for operating a user equipment (UE), the code comprises:

• operating the UE in a minimum set enhanced uplink dedicated channel (E-DCH) transport format combination (E-TFC) mode, a minimum set transport format combination (TFC) mode, or both the minimum set E-TFC mode and minimum set TFC mode in a multiple radio access bearers (multi-RAB) mode in a transmission time interval (TTI);
• determining that first data is scheduled for transmission in an uplink high speed dedicated physical control channel (HS-DPCCH) in the TTI;
• determining that second data is scheduled for transmission in an uplink data channel in the TTI;
• and
• forgoing building the second data for transmission during the TTI if the UE would be transmit-power limited in the TTI when transmitting the first data and second data concurrently while operating in the minimum set E-TFC mode, the minimum set TFC mode, or both the minimum set E-TFC mode and minimum set TFC mode in the multi-RAB mode.

An apparatus for wireless communication, comprising:

• at least one processor;
• a communication interface coupled to the at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured by executable code stored at the memory to:
• operate the apparatus in a minimum set enhanced uplink dedicated channel (E-DCH) transport format combination (E-TFC) mode, a minimum set transport format combination (TFC) mode, or both the minimum set E-TFC mode and minimum set TFC mode in a multiple radio access bearers (multi-RAB) mode in a transmission time interval (TTI);
• determine that first data is scheduled for transmission in an uplink high speed dedicated physical control channel (HS-DPCCH) in the TTI;
• determine that second data is scheduled for transmission in an uplink data channel in the TTI;
• and
• forgo building the second data for transmission during the TTI if the apparatus would be transmit-power limited in the TTI when transmitting the first data and second data concurrently while operating in the minimum set E-TFC mode, the minimum set TFC mode, or both the minimum set E-TFC mode and minimum set TFC mode in the multi-RAB mode.