Supporting enhanced uplink during soft handover

A Node B comprising:

• a circuit configured to receive uplink data from a first wireless transmit/receive unit (WTRU) in a first cell;
• wherein the first WTRU is simultaneously transmitting the same uplink data to a plurality of cells including a first cell and at least one second cell;
• wherein the circuit is further configured to transmit first scheduling information to the first WTRU using the first cell;
• wherein the circuit is further configured to transmit hybrid automatic repeat requests (HARQ) acknowledgments (ACKs) and HARQ negative acknowledgments (NACKs) to the first WTRU using the first cell;
• wherein the circuit is further configured to receive the uplink data from a second WTRU in the first cell;
• wherein the second WTRU is simultaneously transmitting the uplink data to the plurality of cells;
• wherein the first cell is not the primary cell and at least a third cell of the plurality of cells is the primary cell;
• wherein the circuit is further configured to not transmit first scheduling information to the second WTRU using the first cell;
• wherein the second WTRU receives the first scheduling information from the third cell;
• and
• wherein the circuit is further configured to not transmit the HARQ NACKs to the second WTRU using the first cell;
• wherein the first WTRU receives the HARQ ACKS and NACKs from the third cell.