Wireless communication method and apparatus for reporting traffic volume measurement information to support enhanced uplink data transmissions

A wireless transmit/receive unit (WTRU) comprising:

• a buffer configured to store data for enhanced uplink (EU) transmission, wherein the EU data includes data for a priority logical channel;
• on a condition that a scheduling message is not available, circuitry configured to transmit non-scheduled data up to a threshold amount of data in absence of the scheduling message, wherein the scheduling message is for scheduling scheduled data transmission;
• on a condition that scheduled data for a logical channel is in the buffer, circuitry configured to transmit EU scheduling information with EU non-scheduled data in absence of the scheduling message, wherein the scheduling information indicates a total amount of the buffered EU data and an amount of EU data buffered for a priority logical channel;
• circuitry configured to receive a scheduling message in response to the transmitted EU scheduling information;
• and
• circuitry configured to transmit the scheduled data in response to the scheduling message.