4.6A Coding/Multiplexing for HS-SCCH orders type A

25.2223GPPMultiplexing and channel coding (TDD)Release 17TS

HS-SCCH orders type A are commands sent to the UE using HS-SCCH. No HS-PDSCH is associated with HS-SCCH orders.

For 1.28 Mcps TDD, HS-SCCH order type A may be used when any of the following conditions is true:

– HS_DSCH_RECEPTION_CELL_FACH_STATE is TRUE;

– CONTROL_CHANNEL_DRX_STATUS is TRUE, and UE is not configured in MIMO mode;

– CONTROL_CHANNEL_DRX_STATUS is TRUE, and UE is configured in MIMO mode while the variable MIMO SF mode for HS-PDSCH dual stream is SF1

– the variable HS_DSCH_SPS_STATUS is TRUE, and UE is not configured in MIMO mode;

– the variable HS_DSCH_SPS_STATUS is TRUE, and UE is configured in MIMO mode while the variable MIMO SF mode for HS-PDSCH dual stream is SF1.

The following information is transmitted by means of the HS-SCCH order type A physical channel.

– Order type (3 bits): x_odt,1, x_odt,2, x_odt,3

– UE identity (16 bits): x_ue,1, x_ue,2, …, x_ue,16

The coding for HS-SCCH orders type A is specified in subclause 4.6.

4.6A.1 HS-SCCH orders type A information field mapping

4.6A.1.1 Order type mapping

If x_odt,1, x_odt,2, x_odt,3= ‘000’, then the HS-SCCH order is an uplink synchronization establishment order when UE is in CELL_FACH or CELL_PCH state.

If x_odt,1, x_odt,2, x_odt,3= ‘001‘, then the HS-SCCH order is an order to release the allocated semi-persistent HS-PDSCH resources when UE is in CELL_DCH state.

If x_odt,1, x_odt,2, x_odt,3= ‘010‘, then the HS-SCCH order is DRX Activation order when UE is in CELL_DCH state.

If x_odt,1, x_odt,2, x_odt,3= ‘011‘, then the HS-SCCH order is DRX De-activation order when UE is in CELL_DCH state.

4.6A.1.2 UE identity mapping

The UE identity is the HS-DSCH Radio Network Identifier (H-RNTI) defined in [12]. This is mapped such that x_ue,1 corresponds to the MSB and x_ue,16 to the LSB, cf. [14].