5G NR: PDSCH Resource Allocation in Frequency-Domain
The network informs the UE about the frequency resources to be used for the reception of PDSCH using DCI Formats 1_0, 1_1 or 1_2. Within these DCI Formats, the field ' Frequency domain resource assignment ' carries the required resource allocation information.
5G
Frequency domain resource assignment. The number of bits(bit length) for this field is determined by following formula . The meaning of varies depending on the search space where DCI_0_0 is transmitted.. When stransmitted in common search space,
5G
If the scheduling DCI is configured to indicate the downlink resource allocation type as part of the Frequency domain resource assignment field by setting a higher layer parameter resourceAllocation in pdsch-Config to 'dynamicswitch', the UE shall use downlink resource allocation type 0 or type 1 as defined by this DCI field. Otherwise the UE ...
NR PDSCH Resource Allocation and DM-RS and PT-RS Reference ...
The resources in the frequency domain for PDSCH transmission are scheduled by a DCI in the field Frequency domain resource assignment. This field indicates whether the resource allocation of resource blocks (RBs) is contiguous or noncontiguous, based on the allocation type. The RBs allocated are within the BWP.
5G
As mentioned above, frequency domain resource allocation is very similar to LTE. Mainly determined by bitmap or RIV depending of Resource Allocation Type. This part will be described in a separate page titled Resource Allocation Type. PDSCH - Time Domain Allocation (DCI - PDSCH Timing) : K0. Following is the illustration showing the Time Domain ...
How LTE Stuff Works?: DCI Formats in 5G NR
- Note2: Through "Time domain resource assignment" field in the DCI, the network indicates the entry to choose from PDSCH time domain allocation table. The table is either the default PDSCH time domain allocation according to table 5.1.2.1.1 from 38.214 or configured by RRC using IE pdsch-TimeDomainAllocationList in either pdsch ...
NR Downlink Control Information Formats
DCI Format 1 _ 0 field (SI-RNTI) Size Frequency domain resource assignment ⌈ l o g 2 (N R B D L, B W P (N R B D L, B W P + 1) / 2) ⌉ bits, where N R B D L, B W P is the size of CORESET 0 Time domain resource assignment 4 bits as defined in Clause 5.1.2.1 of TS 38.214 VRB-to-PRB mapping 1 bit according to TS 38.212 Table 7.3.1.2.2-5 ...
PDF Physical DL Control Channel
DCI Main Contents Frequency domain Resource Assignment Time domain Resource Assignment Modulation and Coding Scheme Set of Resource Blocks for PDSCH or PUSCH 1- Starting Symbol 2- Number of allocated Symbols 3- Slot Offset HARQ Define which MCS Table to be used Example: 64QAM / 256QAM
Random Access MSG3
else: expand the frequency domain resource assignment field by inserting bit(s) of zero after the N UL,hop bits, where N UL,hop is provided in Table 8.3-1. The trancated or expanded frequency resource assignment field is then interpreted as the frequency resource assignment field in DCI format 0_0.
PDF TS 138 214
ETSI 3GPP TS 38.214 version 15.5.0 Release 15 2 ETSI TS 138 214 V15.5.0 (2019-05) Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI.
COMMENTS
The network informs the UE about the frequency resources to be used for the reception of PDSCH using DCI Formats 1_0, 1_1 or 1_2. Within these DCI Formats, the field ' Frequency domain resource assignment ' carries the required resource allocation information.
Frequency domain resource assignment. The number of bits(bit length) for this field is determined by following formula . The meaning of varies depending on the search space where DCI_0_0 is transmitted.. When stransmitted in common search space,
If the scheduling DCI is configured to indicate the downlink resource allocation type as part of the Frequency domain resource assignment field by setting a higher layer parameter resourceAllocation in pdsch-Config to 'dynamicswitch', the UE shall use downlink resource allocation type 0 or type 1 as defined by this DCI field. Otherwise the UE ...
The resources in the frequency domain for PDSCH transmission are scheduled by a DCI in the field Frequency domain resource assignment. This field indicates whether the resource allocation of resource blocks (RBs) is contiguous or noncontiguous, based on the allocation type. The RBs allocated are within the BWP.
As mentioned above, frequency domain resource allocation is very similar to LTE. Mainly determined by bitmap or RIV depending of Resource Allocation Type. This part will be described in a separate page titled Resource Allocation Type. PDSCH - Time Domain Allocation (DCI - PDSCH Timing) : K0. Following is the illustration showing the Time Domain ...
- Note2: Through "Time domain resource assignment" field in the DCI, the network indicates the entry to choose from PDSCH time domain allocation table. The table is either the default PDSCH time domain allocation according to table 5.1.2.1.1 from 38.214 or configured by RRC using IE pdsch-TimeDomainAllocationList in either pdsch ...
DCI Format 1 _ 0 field (SI-RNTI) Size Frequency domain resource assignment ⌈ l o g 2 (N R B D L, B W P (N R B D L, B W P + 1) / 2) ⌉ bits, where N R B D L, B W P is the size of CORESET 0 Time domain resource assignment 4 bits as defined in Clause 5.1.2.1 of TS 38.214 VRB-to-PRB mapping 1 bit according to TS 38.212 Table 7.3.1.2.2-5 ...
DCI Main Contents Frequency domain Resource Assignment Time domain Resource Assignment Modulation and Coding Scheme Set of Resource Blocks for PDSCH or PUSCH 1- Starting Symbol 2- Number of allocated Symbols 3- Slot Offset HARQ Define which MCS Table to be used Example: 64QAM / 256QAM
else: expand the frequency domain resource assignment field by inserting bit(s) of zero after the N UL,hop bits, where N UL,hop is provided in Table 8.3-1. The trancated or expanded frequency resource assignment field is then interpreted as the frequency resource assignment field in DCI format 0_0.
ETSI 3GPP TS 38.214 version 15.5.0 Release 15 2 ETSI TS 138 214 V15.5.0 (2019-05) Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI.