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): xodt,1, xodt,2, xodt,3
– UE identity (16 bits): xue,1, xue,2, …, xue,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 xodt,1, xodt,2, xodt,3= ‘000’, then the HS-SCCH order is an uplink synchronization establishment order when UE is in CELL_FACH or CELL_PCH state.
If xodt,1, xodt,2, xodt,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 xodt,1, xodt,2, xodt,3= ‘010‘, then the HS-SCCH order is DRX Activation order when UE is in CELL_DCH state.
If xodt,1, xodt,2, xodt,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 xue,1 corresponds to the MSB and xue,16 to the LSB, cf. [14].