6A.3 Operation during compressed mode on the associated DPCH or F-DPCH

25.2143GPPPhysical layer procedures (FDD)Release 17TS

During compressed mode on the associated DPCH or F-DPCH, and the Secondary Cell Active is 0, or the Secondary Cell Active is not 0 and the compressed mode is applied to the serving HS-DSCH cell and all the secondary serving HS-DSCH cells, the following applies for the UE for transmission of HS-DPCCH and reception of HS-SCCH and HS-PDSCH:

– The UE shall neglect a HS-SCCH or HS-PDSCH transmission, if a part of the HS-SCCH or a part of the corresponding HS-PDSCH overlaps with a downlink transmission gap on the associated DPCH or F-DPCH. In this case, neither ACK, nor NACK shall be transmitted by the UE to respond to the corresponding downlink transmission.

– If a part of a HS-DPCCH slot allocated to HARQ-ACK overlaps with an uplink transmission gap on the associated DPCH, the UE shall use DTX on the HS-DPCCH in that HS-DPCCH slot.

– If in a HS-DPCCH sub-frame a part of a slot allocated for CQI information overlaps with an uplink transmission gap on the associated DPCH, the UE shall not transmit that CQI or composite PCI/CQI information in that sub-frame (if HS-DPCCH slot format 0 is used) or in that slot (if HS-DPCCH slot format 1 is used).

– If a CQI report or a composite PCI/CQI report is scheduled in the current CQI field according to subclause 6A.1.2.1 paragraph (2) or subclause 6A.1.2.2 paragraph (2), and the corresponding 3-slot reference period (as defined in subclause 6A.2.1 or subclause 6A.2.2) wholly or partly overlaps a downlink transmission gap, then the UE shall use DTX in the current CQI field and in the CQI fields in the next (N_cqi_transmit–1) subframes.

During compressed mode, when Secondary_Cell_Active is not 0 and the compressed mode is not applied to all the active cells, the following applies for the UE for transmission of HS-DPCCH and reception of HS-SCCH and HS-PDSCH on the cell(s) in which the compressed mode is applied:

– The UE shall neglect a HS-SCCH or HS-PDSCH transmission on a cell, if a part of the HS-SCCH or a part of the corresponding HS-PDSCH overlaps with a downlink transmission gap on that cell. In this case, neither ACK, nor NACK shall be transmitted by the UE to respond to the corresponding downlink transmission.

– If a CQI report or a composite PCI/CQI report for a cell is scheduled in the current CQI field according to subclause 6A.1.2.1 paragraph (2) or subclause 6A.1.2.2 paragraph (2), and the corresponding 3-slot reference period (as defined in subclause 6A.2.1 or subclause 6A.2.2) wholly or partly overlaps a downlink transmission gap on that cell, then the UE shall use DTX in the current CQI field and in the CQI fields in the next (N_cqi_transmit–1) subframes if using DTX in the CQI field is possible. In the case that using DTX in the CQI field is not possible due to the need to transmit a CQI or a composite PCI/CQI report of another cell not experiencing a compressed mode gap, the UE shall transmit a CQI or a composite PCI/CQI report based on measurements prior to the start of the compressed mode gap for the cell experiencing the compressed mode gap.

During compressed mode, when the UE is configured in Multiflow mode,

– For the assisting serving HS-DSCH cell: The UE shall follow the same compressed mode rules that are defined for the serving HS-DSCH cell.

– For the assisting secondary serving cell, if present: The UE shall follow the same compressed mode rules that are defined for the secondary serving HS-DSCH cell.