摘要:
A method and apparatus for managing a collision in random access channel (RACH) access transmissions are disclosed. A wireless transmit/receive unit (WTRU) transmits WTRU-dependent information to confirm that a detected acquisition indicator (AI) is intended to the WTRU. The WTRU-dependent information may be transmitted separately after detecting the AI, may be transmitted along with a RACH preamble, or may be sent in an E-RACH message. The WTRU-dependent information may be a random number, a sequence or scrambling code randomly selected from a pre-determined set of sequences or scrambling codes. Alternatively, the WTRU-dependent information may be a pre-configured identifier, or information derived from the pre-configured identifier. Alternatively, after detecting an AI, the WTRU may randomly select an enhanced dedicated channel (E-DCH) resource from a set of E-DCH resources associated with an RACH resource used for transmission of the RACH preamble and transmit an E-RACH message using the selected E-DCH resource.
摘要:
A method and apparatus of performing discontinuous reception (DRX) and downlink inter-frequency and inter-radio access technology (RAT) measurements in CELL_FACH state are disclosed. While in DRX mode, a wireless transmit/receive unit (WTRU) may perform inter-frequency and inter-RAT measurements in a measurement occasion that fall into a DRX period. The WTRU may perform the measurements while T321 timer is running. The WTRU may take the measurements on first predetermined number of frame in which a DRX frame would coincide after a last reception frame if DRX operation was ongoing. The WTRU may periodically wake up for downlink reception in CELL_FACH state in accordance with a common DRX pattern that is common to all WTRUs in a cell or may wake up from DRX upon reception of the order and receiving a common traffic.
摘要:
A method for discontinuous reception (DRX) implemented in a wireless transmit/receive unit (WTRU) during cell reselection including initiating cell reselection; disabling DRX operation, wherein disabling DRX operation enables continuous reception; transmitting a CELL UPDATE message; receiving a CELL UPDATE CONFIRM message; and enabling DRX operation based on the received CELL UPDATE CONFIRM message.
摘要:
A method for discontinuous reception (DRX) implemented in a wireless transmit/receive unit (WTRU) during cell reselection including initiating cell reselection; disabling DRX operation, wherein disabling DRX operation enables continuous reception; transmitting a CELL UPDATE message; receiving a CELL UPDATE CONFIRM message; and enabling DRX operation based on the received CELL UPDATE CONFIRM message.
摘要:
A method and an apparatus is provided for terminating an enhanced random access channel (E-RACH) message in an E-RACH transmission. Triggers for terminating the E-RACH message are provided. The actions upon termination of the E-RACH messages are provided to release enhanced dedicated channel (E-DCH) resources while in cell forward access channel (CELL_FACH) state or transition to cell dedicated channel (CELL_DCH) state.
摘要:
Dual-cell or multi-cell Wireless Transmit Receive Units (WTRUS) configured to implement mobility procedures are described. The WTRU configurations implement methods to optimize and allow mobility for the procedures of cell search and cell reselection, measurement reporting and inter-frequency handovers, compressed mode measurements, and soft handovers.
摘要:
A method and apparatus for fast control channel feedback for multiple downlink carrier operations are disclosed. A wireless transmit/receive unit (WTRU) receives signals over a plurality of downlink carriers, generates feedback for each of the plurality of downlink carriers based on the received signals, and transmits via a plurality of antennas, the feedback for at least one of the plurality of downlink carriers over a first physical channel and feedback for another of the plurality of downlink carriers over a second physical channel.
摘要:
A method and apparatus of supporting cell reselection in an evolved HSPA network is disclosed. A wireless transmit receive unit that has allocated channel resources, is restricted from cell reselection until a predetermined criteria is met. During this no selection period, the WTRU continues to make and report measurements.
摘要:
A method and apparatus for pre-allocating uplink resources in CELL-FACH are disclosed. A wireless transmit/receive unit (WTRU) in CELL_FACH or CELL_PCH states may be pre-allocated with an uplink resource when a downlink transmission is transmitted. The WTRU may then use the pre-allocated uplink resource for channel quality information or hybrid automatic repeat request (HARQ) feedback, or any other purposes. The pre-allocated uplink resource may be enhanced dedicated channel (E-DCH) resource or high speed dedicated physical control channel (HS-DPCCH) resource.
摘要:
A method of high speed downlink packet access (HSDPA) link adaptation, comprises receiving a channel quality measurement metric over a Measured Results on random access channel (RACH) information element (IE). The link is adapted based upon the received channel quality metric.