METHOD AND APPARATUS FOR SIMULTANEOUSLY RECEIVING ON TWO CARRIERS AND PERFORMING DISCONTINUOUS TRANSMISSION AND RECEPTION IN DUAL CELL HIGH SPEED DOWNLINK PACKET ACCESS

摘要

A method and an apparatus for simultaneously receiving on two carriers and performing discontinuous transmission (DTX) and discontinuous reception (DRX) in dual cell high speed downlink packet access (DC-HSDPA) are disclosed. A wireless transmit/receive unit (WTRU) receives a message for activating DRX for at least one of an anchor carrier and a supplementary carrier and applies the same DRX pattern to the anchor carrier and the supplementary carrier upon reception of the message. The message may be received via a high speed shared control channel (HS-SCCH) order. The WTRU may activate or de-activate the supplementary carrier based on the physical layer signal. Upon activation of the supplementary carrier, the WTRU may apply the same DRX pattern on both the anchor carrier and the supplementary carrier. The WTRU may flush a hybrid automatic repeat request (HARQ) buffer associated with the supplementary carrier upon de-activation of the supplementary carrier.

主权项

1. A method implemented in a wireless transmit/receive unit (WTRU) for supporting dual cell high speed downlink packet access (DC-HSDPA), the method comprising:
receiving, via an anchor carrier or a supplementary carrier, a first message indicating activation of discontinuous reception (DRX); and applying a same DRX pattern to both the anchor carrier and the supplementary carrier in response to the first message such that DRX cycles of the anchor carrier and the supplementary carrier are aligned in the DRX pattern, wherein the activation of DRX is common to both the anchor carrier and the supplementary carrier; receiving a second message indicating deactivation of DRX for at least one of the anchor carrier or the supplementary carrier, wherein the second message is received via a high speed shared control channel (HS-SCCH) order; and deactivating DRX on both the anchor carrier and the supplementary carrier in response to the second message.