Method and apparatus for allocation of physical resources for uplink transmissions

A wireless transmit/receive unit (WTRU) comprising:

• a receiver;
• a transmitter;
• and
• a controller;
• wherein:
• the receiver and the controller are configured to receive, over a downlink signaling channel, information indicating a first allocation of physical resources for uplink transmission;
• the controller is further configured to receive data of a logical channel within the WTRU;
• the transmitter and the controller are further configured to, in response to receipt of the data of the logical channel, transmit a first block over physical resources indicated in the information indicating a first allocation of physical resources for uplink transmission;
• the controller is further configured to initiate a timer;
• the transmitter and the controller are further configured to:
• in response to an expiration of the timer and not receiving information indicating a second allocation of physical resources for uplink transmission, select a first type of request from a plurality of types of requests and transmit a request of the selected first type of request over an uplink signaling channel;
• the receiver and the controller are further configured to, in response to the transmitted request of the selected first type of request, receive information indicating a second allocation of physical resources for uplink transmission;
• the transmitter and the controller are further configured to, in response to receipt of the information indicating a second allocation of physical resources for uplink transmission, transmit a second block over physical resources indicated in the information indicating a second allocation of physical resources for uplink transmission;
• and
• the transmitter and the controller are further configured to:
• select a second type of request from the plurality of types of requests based on receipt of data of a different logical channel and transmit a request of the second type of request, wherein the first type of request is a different type than the second type of request.