Patent ID: 8179839

Claim:
A method of transmitting a circuit switched (CS) voice application via an enhanced dedicated channel (E-DCH), implemented in a wireless transmit/receive unit (WTRU), comprising: receiving a grant; performing an enhanced-transport format combination (E-TFC) selection procedure based on the grant, wherein the selected E-TFC corresponds to a number of bits that may be transmitted over the E-DCH; receiving a mapping signal, wherein the mapping signal maps a number of bits that may be transmitted over an E-DCH transport block to an adaptive multi-rate (AMR) codec mode; determining, at the WTRU, a number of bits that are to be transmitted over the E-DCH according to: the mapping signal on a condition that the number of bits corresponding to the selected E-TFC is greater than or equal to the number of bits indicated in the mapping signal; and the number of bits corresponding to the selected E-TFC on a condition that the number of bits corresponding to the selected E-TFC is less than the number of bits indicated in the mapping signal; determining, at the WTRU, an AMR codec bit-rate based on the number of bits that are to be transmitted over the E-DCH; generating AMR voice packets based on the determined AMR codec bit-rate; and submitting the AMR voice packets to lower layers for transmission over the E-DCH.