Patent ID: 8295839

Claim:
A method for use in a wireless transmit/receive unit (WTRU), the method comprising: receiving a radio link control (RLC) intelligence mode indicator from a serving radio network controller (SRNC); in response to receiving a message indicating a high speed-downlink shared channel (HS-DSCH) serving cell change, transmitting a serving cell change status report including a first sequence indicator associated with a first received packet data unit (PDU); receiving a second PDU associated with a second sequence indicator wherein the second sequence indicator is greater than the first sequence indicator; and on a condition that the RLC intelligence mode indicator indicates a non-intelligent mode: the transmitting the serving cell change status report includes advancing a status prohibit timer to a penultimate position on a condition that a status prohibit timer is active, and the receiving the second PDU includes transmitting a status report including a negative acknowledgement, wherein the negative acknowledgement indicates a third PDU.