9.1.2 PHICH assignment procedure
36.2133GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Physical layer proceduresRelease 17TS
If a UE is not configured with multiple TAGs, or if a UE is configured with multiple TAGs and PUSCH transmissions scheduled from serving cell 
in subframe n are not scheduled by a Random Access Response Grant corresponding to a random access preamble transmission for a secondary cell
– For PUSCH transmissions scheduled from serving cell 
in subframe n, the UE shall determine the corresponding PHICH resource of serving cell 
in subframe 
, where
– 
is always 4 for FDD.
– 
is 6 for FDD-TDD and serving cell c frame structure type 2 and the PUSCH transmission is for another serving cell with frame structure type 1.
– 
is 4 for FDD-TDD and serving cell c frame structure type 1and the PUSCH transmission is for a serving cell with frame structure type 1.
– 
is given in table 9.1.2-1 for FDD-TDD and serving cell c frame structure type 1 and the PUSCH transmission is for another serving cell with frame structure type 2.
– For TDD, if the UE is not configured with EIMTA-MainConfigServCell-r12 for any serving cell and, if the UE is configured with one serving cell, or if the UE is configured with more than one serving cell and the TDD UL/DL configuration of all the configured serving cells is the same, for PUSCH transmissions scheduled from serving cell 
in subframe n, the UE shall determine the corresponding PHICH resource of serving cell 
in subframe 
, where 
is given in table 9.1.2-1 if the UE is not configured with higher layer parameter symPUSCH-UpPts-r14 for the serving cell, otherwise 
is given in Table 9.1.2-3.
– For TDD, if the UE is configured with more than one serving cell and the TDD UL/DL configuration of at least two configured serving cells is not the same, or if the UE is configured with EIMTA-MainConfigServCell-r12 for at least one serving cell , or for FDD-TDD and serving cell 
frame structure type 2, for PUSCH transmissions scheduled from serving cell 
in subframe n, the UE shall determine the corresponding PHICH resource of serving cell 
in subframe 
, where 
is given in table 9.1.2-1 if the UE is not configured with higher layer parameter symPUSCH-UpPts-r14 for the serving cell, otherwise is given in Table 9.1.2-3, where the "TDD UL/DL Configuration" in the rest of this Clause refers to the UL-reference UL/DL configuration (defined in Clause 8.0) of the serving cell corresponding to the PUSCH transmission.
If a UE is configured with multiple TAGs, for PUSCH transmissions on subframe n for a secondary cell 
scheduled by a Random Access Response grant corresponding to a random access preamble transmission for the secondary cell 
,
– For TDD, if the UE is configured with more than one serving cell and the TDD UL/DL configuration of at least two configured serving cells is not the same, or if the UE is configured with EIMTA-MainConfigServCell-r12 for at least one serving cell, or for FDD-TDD and serving cell 
frame structure type 2, the "TDD UL/DL Configuration" in the rest of this Clause refers to the UL-reference UL/DL configuration (defined in Clause 8.0) of secondary cell 
.
– If the UE is not configured to monitor PDCCH/EPDCCH with carrier indicator field corresponding to secondary cell 
in another serving cell, the UE shall determine the corresponding PHICH resource on the secondary cell 
in subframe 
, where
– 
is always 4 for FDD and where is given in table 9.1.2-1 if the UE is not configured with higher layer parameter symPUSCH-UpPts-r14 for the secondary cell 
, otherwise 
is given in Table 9.1.2-3 for TDD.
– 
is 4 for FDD-TDD and secondary cell 
frame structure type 1.
– 
is given in table 9.1.2-1 if the UE is not configured with higher layer parameter symPUSCH-UpPts-r14 for the secondary cell 
, otherwise 
is given in Table 9.1.2-3 for FDD-TDD and secondary cell 
frame structure type 2
– If the UE is configured to monitor PDCCH/EPDCCH with carrier indicator field corresponding to secondary cell 
in another serving cell 
, the UE configured with multiple TAGs shall determine the corresponding PHICH resource on the serving cell 
in subframe 
, where
– 
is always 4 for FDD and where 
is given in table 9.1.2-1 if the UE is not configured with higher layer parameter symPUSCH-UpPts-r14 for the secondary cell 
, otherwise 
is given in Table 9.1.2-3 for TDD.
– 
is 4 for FDD-TDD and primary cell frame structure type 1 and frame structure type 1 for secondary cell 
and serving cell 
– 
is given in table 9.1.2-1 if the UE is not configured with higher layer parameter symPUSCH-UpPts-r14 for the secondary cell 
, otherwise 
is given in Table 9.1.2-3 for FDD-TDD and serving cell c frame structure type 2
– 
is 6 for FDD-TDD and serving cell c frame structure type 1 and serving cell 
frame structure type 2
For subframe bundling operation, the corresponding PHICH resource is associated with the last subframe in the bundle.
Table 9.1.2-1: 
for TDD
|
TDD UL/DL |
subframe index n |
|||||||||
|
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
|
0 |
4 |
7 |
6 |
4 |
7 |
6 |
||||
|
1 |
4 |
6 |
4 |
6 |
||||||
|
2 |
6 |
6 |
||||||||
|
3 |
6 |
6 |
6 |
|||||||
|
4 |
6 |
6 |
||||||||
|
5 |
6 |
|||||||||
|
6 |
4 |
6 |
6 |
4 |
7 |
|||||
Table 9.1.2-3: 
for TDD and UE configured with symPUSCH-UpPts-r14
|
TDD UL/DL |
subframe index n |
|||||||||
|
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
|
0 |
5 |
4 |
7 |
6 |
5 |
4 |
7 |
6 |
||
|
1 |
5 |
4 |
6 |
5 |
4 |
6 |
||||
|
2 |
7 |
6 |
7 |
6 |
||||||
|
3 |
7 |
6 |
6 |
6 |
||||||
|
4 |
7 |
6 |
6 |
|||||||
|
5 |
7 |
6 |
||||||||
|
6 |
4 |
4 |
6 |
6 |
4 |
4 |
7 |
|||
The PHICH resource is identified by the index pair
where 
is the PHICH group number and 
is the orthogonal sequence index within the group as defined by:
where
-
is mapped from the cyclic shift for DMRS field (according to Table 9.1.2-2) in the most recent PDCCH/EPDCCH with uplink DCI format [4] for the transport block(s) associated with the corresponding PUSCH transmission. 
shall be set to zero, if there is no PDCCH/EPDCCH with uplink DCI format for the same transport block, and
- if the initial PUSCH for the same transport block is semi-persistently scheduled, or
- if the initial PUSCH for the same transport block is scheduled by the random access response grant .
is the spreading factor size used for PHICH modulation as described in Clause 6.9.1 in [3].
where 
is the lowest PRB index in the first slot of the corresponding PUSCH transmission 
is the number of PHICH groups configured by higher layers as described in Clause 6.9 of [3],
Table 9.1.2-2: Mapping between 
and the cyclic shift for DMRS field
in PDCCH/EPDCCH with uplink DCI format in [4]
|
Cyclic Shift for DMRS Field in PDCCH/EPDCCH |
|
|
000 |
0 |
|
001 |
1 |
|
010 |
2 |
|
011 |
3 |
|
100 |
4 |
|
101 |
5 |
|
110 |
6 |
|
111 |
7 |
