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fix-dci11-type0-bitmap-setting

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This commit is contained in:
Laurent THOMAS
2024-05-23 10:26:28 +02:00
parent 082007834c
commit b461fe5e6b
1 changed files with 27 additions and 16 deletions
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openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+27 -16
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@@ -278,6 +278,14 @@ int8_t nr_ue_decode_BCCH_DL_SCH(NR_UE_MAC_INST_t *mac,
* This code contains all the functions needed to process all dci fields.
* These tables and functions are going to be called by function nr_ue_process_dci
*/
static inline int writeBit(uint8_t *bitmap, int offset, int value, int size)
{
for (int i = offset; i < offset + size; i++)
bitmap[i / 8] |= value << (i % 8);
return size;
}
int8_t nr_ue_process_dci_freq_dom_resource_assignment(nfapi_nr_ue_pusch_pdu_t *pusch_config_pdu,
fapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch_config_pdu,
NR_PDSCH_Config_t *pdsch_Config,
@@ -296,26 +304,29 @@ int8_t nr_ue_process_dci_freq_dom_resource_assignment(nfapi_nr_ue_pusch_pdu_t *p
pdsch_Config->resourceAllocation == NR_PDSCH_Config__resourceAllocation_resourceAllocationType0) {
// TS 38.214 subclause 5.1.2.2.1 Downlink resource allocation type 0
dlsch_config_pdu->resource_alloc = 0;
memset(dlsch_config_pdu->rb_bitmap, 0, sizeof(dlsch_config_pdu->rb_bitmap));
uint8_t *rb_bitmap = dlsch_config_pdu->rb_bitmap;
memset(rb_bitmap, 0, sizeof(dlsch_config_pdu->rb_bitmap));
int P = getRBGSize(n_RB_DLBWP, pdsch_Config->rbg_Size);
int n_RBG = frequency_domain_assignment.nbits;
int index = 0;
for (int i = 0; i < n_RBG; i++) {
int currentBit = 0;
// write first bit sepcial case
const int n_RBG = frequency_domain_assignment.nbits;
int first_bit_rbg = (frequency_domain_assignment.val >> (n_RBG - 1)) & 0x01;
currentBit += writeBit(rb_bitmap, currentBit, first_bit_rbg, P - (start_DLBWP % P));
// write all bits until last bit special case
for (int i = 1; i < n_RBG - 1; i++) {
// The order of RBG bitmap is such that RBG 0 to RBG n_RBG − 1 are mapped from MSB to LSB
int bit_rbg = (frequency_domain_assignment.val >> (n_RBG - 1 - i)) & 0x01;
int size_RBG;
if (i == n_RBG - 1)
size_RBG = (start_DLBWP + n_RB_DLBWP) % P > 0 ?
(start_DLBWP + n_RB_DLBWP) % P :
P;
else if (i == 0)
size_RBG = P - (start_DLBWP % P);
else
size_RBG = P;
for (int j = index; j < size_RBG; j++)
dlsch_config_pdu->rb_bitmap[j / 8] |= bit_rbg << (j % 8);
index += size_RBG;
currentBit += writeBit(rb_bitmap, currentBit, bit_rbg, P);
}
// write last bit
int last_bit_rbg = frequency_domain_assignment.val & 0x01;
const int tmp=(start_DLBWP + n_RB_DLBWP) % P;
int last_RBG = tmp ? tmp : P;
writeBit(rb_bitmap, currentBit, last_bit_rbg, last_RBG);
dlsch_config_pdu->number_rbs = count_bits(dlsch_config_pdu->rb_bitmap, sizeofArray(dlsch_config_pdu->rb_bitmap));
// Temporary code to process type0 as type1 when the RB allocation is contiguous
int state = 0;