10.1.3A FDD-TDD HARQ-ACK feedback procedures for primary cell frame structure type 2
36.2133GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Physical layer proceduresRelease 17TS
A UE is configured by higher layers to use either PUCCH format 1b with channel selection or PUCCH format 3/4/5 for transmission of HARQ-ACK.
For a serving cell, if the serving cell is frame structure type 1, and a UE is not configured to monitor PDCCH/EPDCCH in another serving cell for scheduling the serving cell, set 
is defined in Table 10.1.3A-1, otherwise set 
is defined in Table 10.1.3.1-1C if the UE is configured with higher layer parameter shortTTI for slot-PDSCH, in Table 10.1.3.1-1B if the UE is configured with higher layer parameter shortProcessingTime and the corresponding PDCCH with CRC scrambled by C-RNTI is in the UE-specific search space for subframe-PDSCH and in Table 10.1.3.1-1 otherwise.
PUCCH format 1b with channel selection is not supported if a UE is configured with more than two serving cells, or if the DL-reference UL/DL configuration 5 (as defined in Clause 10.2) is defined for any serving cell, or if the DL-reference UL/DL configuration of a serving cell with frame structure type 1 belongs to {2, 3, 4} and the UE is not configured to monitor PDCCH/EPDCCH in another serving cell for scheduling the serving cell.
If a UE is configured with the parameter EIMTA-MainConfigServCell-r12 for at least one serving cell and is configured with PUCCH format 3 without PUCCH format 4/5 configured, the UE is not expected to be configured with more than two serving cells having DL-reference UL/DL configuration 5.
If a UE is configured to use PUCCH format 1b with channel selection for HARQ-ACK transmission, for the serving cells,
– if more than 4 HARQ-ACK bits for 
multiple downlink and special subframes associated with a single UL subframe n, where is as defined in Clause 10.1.3.2.1 for case where the UE is configured with two serving cells with different UL/DL configurations,
– spatial HARQ-ACK bundling across multiple codewords within a downlink or special subframe is performed for each serving cell by a logical AND operation of all the corresponding individual HARQ-ACKs, and the bundled HARQ-ACK bits for each serving cell is transmitted using PUCCH format 1b with channel selection,
– otherwise,
– spatial HARQ-ACK bundling is not performed, and the HARQ-ACK bits are transmitted using PUCCH format 1b with channel selection.
If a UE is configured to use PUCCH format 3 without PUCCH format 4/5 configured for HARQ-ACK transmission, for the serving cells,
– if more than 21 HARQ-ACK bits for 
multiple subframes in downlink and special subframes associated with a single UL subframe n, where 
as defined in Clause 10.1.3.2.2 for the case of UE configured with more than one serving cell and if at least two cells have different UL/DL configurations,
– spatial HARQ-ACK bundling across multiple codewords within a downlink subframe or a special subframe is performed for each serving cell by a logical AND operation of all of the corresponding individual HARQ-ACKs, and PUCCH format 3 is used,
– otherwise,
– spatial HARQ-ACK bundling is not performed, and the HARQ-ACK bits are transmitted using PUCCH format 3.
– UE shall determine the number of HARQ-ACK bits, 
, associated with an UL subframe/slot n according to 
where 
is the number of configured cells, and 
is the number of HARQ-bits for the c-th serving cell defined in Clause 7.3.4. If a UE is not configured to monitor PDCCH/EPDCCH/SPDCCH in another serving cell for scheduling a serving cell with frame structure type 1, and the DL-reference UL/DL configuration of the serving cell belongs to {2, 3, 4, 5}, then the UE is not expected to be configured with 
which result in 
.
HARQ-ACK transmission on two antenna ports 
is supported for PUCCH format 3.
HARQ-ACK transmission on two antenna ports is supported for PUCCH format 1b with channel selection and with two configured serving cells.
The FDD-TDD HARQ-ACK feedback procedure for PUCCH format 1b with channel selection follows the HARQ-ACK procedure described in Clause 10.1.3.2.1 for the case of UE configured with two serving cells with different UL/DL configurations, and for PUCCH format 3/4/5 follows the HARQ-ACK procedure described in Clause 10.1.3.2.2/10.1.3.2.3/10.2.3.2.4 for the case of UE configured with more than one serving cell and if at least two cells have different UL/DL configurations.
Table 10.1.3A-1: Downlink association set 
: 
for FDD-TDD and serving cell frame structure type 1
|
DL-reference UL/DL Configuration |
Subframe n |
|||||||||
|
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
|
0 |
– |
– |
6, 5 |
5, 4 |
4 |
– |
– |
6, 5 |
5, 4 |
4 |
|
1 |
– |
– |
7, 6 |
6, 5, 4 |
– |
– |
– |
7, 6 |
6, 5, 4 |
– |
|
2 |
– |
– |
8, 7, 6, 5, 4 |
– |
– |
– |
– |
8, 7, 6, 5, 4 |
– |
– |
|
3 |
– |
– |
11, 10, 9, 8, 7, 6 |
6, 5 |
5, 4 |
– |
– |
– |
– |
– |
|
4 |
– |
– |
12, 11, 10, 9, 8, 7 |
7, 6, 5, 4 |
– |
– |
– |
– |
– |
– |
|
5 |
– |
– |
13, 12, 11, 10, 9, 8, 7, 6, 5, 4 |
– |
– |
– |
– |
– |
– |
– |
|
6 |
– |
– |
8, 7 |
7, 6 |
6, 5 |
– |
– |
7 |
7, 6, 5 |
– |