5.9A HS-DSCH procedure in CELL_FACH state

25.2243GPPPhysical layer procedures (TDD)TS

5.9A.1 Link adaptation procedure

In HS-DSCH reception in CELL_FACH state, the measurement result on RACH can be used for initial link adaptation. Only when UE is allocated a dedicated UE identity, the ACK/NACK feedback is provided and a measurement report is associated with each HS-DSCH link adaptation procedure. When downlink transmission is recommenced following a transmission pause, Node B shall order UE to perform the uplink synchronization procedure cf [subclause 5.3.3.2 Establishment of uplink synchronization] in case it detects the UE is out of synchronization. If Node B receives E-RUCCH from the UE, the Node B can then resume the HS-DSCH transmission for the UE, and the link adaptation procedure is the same as that in CELL_DCH state, cf.5.9.1.

The Node B shall always use HS-SCCH type 1 for BCCH transmission. For the UEs in CELL-FACH state which are configured in MU-MIMO mode, the UE shall detect the HS-SCCH type of the HS-SCCHs carry consistent control information via UE ID, i.e., the HS-SCCH shall be HS-SCCH type 1 if the UE ID is BCCH specific H-RNTI while the HS-SCCH shall be HS-SCCH type 4 if the UE ID is its dedicated H-RNTI.

5.9A.2 HS-DSCH channel quality indication procedure

If the UE is configured without dedicated UE identity, the UE shall not transmit an HS-SICH. If the UE is configured with a dedicated UE identity, but the HS-SCCH is an uplink synchronization establishment order, then its associated HS-SICH shall not be transmitted. Otherwise, the channel quality indication shall be transmitted on HS-SICH, and the HS-DSCH channel quality indication procedure is the same as that in CELL_DCH state of 1.28Mcps TDD, cf. 5.9.2.

5.9A.3 HS-SCCH monitoring procedure

When HS_DSCH_DRX_CELL_FACH_STATUS is FALSE (as described in [15]), UE shall monitor HS-SCCHs continuously as in CELL_DCH state cf. 5.9.3.

When HS_DSCH_DRX_CELL_FACH_STATUS is TRUE (as described in [15]), UE shall monitor HS-SCCHs according to the following rules:

– Once the UE receives HS-SCCH carrying its dedicated identity and feeds back on HS-SICH, the UE shall monitor HS-SCCHs continuously for a period of inactivity time (T321) configured by higher layer.

– Once the UE receives HS-SCCH order carrying synchronization establishment command and accomplishes the uplink synchronization establishment, the UE shall monitor HS-SCCHs continuously for a period of inactivity time (T321) configured by higher layer.

– Whenever the UE monitors E-AGCH continuously as described in 5.11.3A, the UE shall always monitor HS-SCCHs.

– The UE shall monitor HS-SCCHs for the RX burst length of the DRX Cycle and may choose not to monitor HS-SCCHs for the rest of the time of the DRX Cycle (as described in [15]).