Section: 6.4.2 Slot/subslot-based physical downlink shared channel
Content: For slot or subslot-based PDSCH, in this specification referred to as slot-PDSCH and subslot-PDSCH respectively, the following additions and exceptions hold in addition to those in clause 6.4: - PDSCH is not mapped to resource elements of SCCEs used by the associated SPDCCH, or resource elements used for UE-specific reference signals associated with SPDCCH - In case of slot-PDSCH: - the mapping to resource elements on antenna port not reserved for other purposes shall be in increasing order of first the index over the assigned physical resource blocks and then the index, for the slot of the assigned physical resources in the subframe, and - in case of UE-specific reference signals, the PDSCH is not mapped to any physical resource blocks carrying PBCH. - In case of subslot-PDSCH: - the mapping to resource elements on antenna port not reserved for other purposes shall be in increasing order of first the index over the assigned physical resource blocks and then the index, starting from given in Table 6.4.2-1. The starting value and the value range of depends on the number of symbols used for PDCCH and the subslot number in the subframe, according to Table 6.4.2-1, and - in case of UE-specific reference signals, - the PDSCH is not mapped to any physical resource blocks in frequency domain carrying PBCH or synchronization signals for the OFDM symbols of the given subslot. - and in case the DCI associated with the subslot-PDSCH indicates the absence of the UE-specific reference signals (see DMRS position indicator field in TS 36.212[ Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding ]  [3]), the PDSCH is not mapped to any physical resource blocks in frequency domain that carried PBCH or synchronization signals for the OFDM symbols of the previous subslot. Table 6.4.2-1: Starting value of index , i.e. , for subslot PDSCH - For PDSCH associated with UE-specific reference signals, - the PDSCH shall only be mapped to physical resource blocks in frequency domain assigned for PDSCH transmission where the assignment maps to both physical resource blocks of a PRG. - the subslot-PDSCH shall not be mapped to the physical resource blocks of a PRG in case the resource elements of the associated SPDCCH are mapped to those physical resource blocks. - In addition, the following additions and exceptions related to L1 signaling and/or higher layer configuration controlling rate-matching around SPDCCH resources hold: - PDSCH is not mapped to resource elements belonging to a SPDCCH resource set configured with higher layer parameter rateMatchingMode indicating 'm2' if either this SPDCCH resource set is not configured with higher layer parameter spdcch-L1-ReuseIndication or it is configured with higher layer parameter spdcch-L1-ReuseIndication 'n1' or 'n2' indicating '0' for the SPDCCH resource set. - PDSCH is not mapped to resource elements belonging to a SPDCCH resource set configured with higher layer parameter rateMatchingMode indicating 'm3' if the SPDCCH associated with PDSCH is found in this SPDCCH resource set and if either this SPDCCH resource set is not configured with higher layer parameter spdcch-L1-ReuseIndication or it is configured with higher layer parameter spdcch-L1-ReuseIndication 'n1' or 'n2' indicating '0' for the SPDCCH resource set. If the SPDCCH associated with PDSCH is found on a candidate belonging to two SPDCCH resource sets, the SPDCCH is assumed to be found in both SPDCCH resource sets. - PDSCH is not mapped to resource elements belonging to a SPDCCH resource set configured with higher layer parameter rateMatchingMode indicating 'm4' if the SPDCCH associated with PDSCH is not found in this SPDCCH resource set and if either this SPDCCH resource set is not configured with higher layer parameter spdcch-L1-ReuseIndication or it is configured with higher layer parameter spdcch-L1-ReuseIndication 'n1' or 'n2' indicating '0' for the SPDCCH resource set. - PDSCH is not mapped to resource elements belonging to a SPDCCH resource set configured with higher layer parameter spdcch-L1-ReuseIndication 'n0' if the bit of the Used/Unused SPDCCH resource indication field corresponding to this SPDCCH resource set in the DCI format 7 associated with PDSCH is set to 1. - PDSCH is not mapped to resource elements belonging to SCCE#0 to SCCE#of a SPDCCH resource set configured with higher layer parameter spdcch-L1-ReuseIndication 'n1' or 'n2' indicating '2' for the SPDCCH resource set if the most significant bit of the Used/Unused SPDCCH resource indication field in the DCI format 7 associated with PDSCH is set to 1. - PDSCH is not mapped to resource elements belonging to SCCE# to SCCE# of a SPDCCH resource set configured with higher layer parameter spdcch-L1-ReuseIndication 'n1' or 'n2' indicating '2' for the SPDCCH resource set if the least significant bit of the Used/Unused SPDCCH resource indication field in the DCI format 7 associated with PDSCH is set to 1. - It should be noted that not mapping PDSCH to resource elements belonging to a SPDCCH resource set holds irrespective of other indications (spdcch-L1-ReuseIndication or rateMatchingMode) associated with other SPDCCH resource sets (if configured). - For a UE with the higher-layer parameter blindSlotSubslotPDSCH-Repetitions set to TRUE and PDSCH associated with a downlink assignment sent on PDCCH/SPDCCH with DCI format 7 indicating transmissions, the rate-matching around SPDCCH resources if applicable for PDSCH in the valid slots/subslots following the slot/subslot containing the downlink assignment follows - the rate-matching around SPDCCH resources of the PDSCH in the slot/subslot containing the downlink assignment, if the DCI format 7 indicating transmissions is received on SPDCCH. - the rate-matching around SPDCCH resources of the PDSCH in the SPDCCH resource set according to rateMatchingMode indicating 'm2', if configured by higher layers, if the DCI format 7 indicating transmissions is received on PDCCH. For other configurations of rateMatchingMode, no rate-matching around SPDCCH resources for PDSCH in the valid slots/subslots following the PDCCH with DCI format 7 indicating PDSCH transmissions is applied..