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Calculate rbSize from estimated buffer

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This commit is contained in:
ChiehChun
2021-02-07 10:39:40 +01:00
committed by Robert Schmidt
parent c7ffd5740f
commit 2283e12560
1 changed files with 29 additions and 21 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
+29 -21
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@@ -539,16 +539,6 @@ void nr_simple_ulsch_preprocessor(module_id_t module_id,
if (!is_xlsch_in_slot(ulsch_in_slot_bitmap, sched_slot))
return;
/* get first, largest unallocated region */
uint16_t *vrb_map_UL =
&RC.nrmac[module_id]->common_channels[CC_id].vrb_map_UL[sched_slot * 275];
uint16_t rbStart = 0;
while (vrb_map_UL[rbStart]) rbStart++;
const uint16_t bwpSize = NRRIV2BW(sched_ctrl->active_ubwp->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
uint16_t rbSize = 1;
while (rbStart + rbSize < bwpSize && !vrb_map_UL[rbStart+rbSize])
rbSize++;
sched_ctrl->sched_pusch.slot = sched_slot;
sched_ctrl->sched_pusch.frame = sched_frame;
/* get the PID of a HARQ process awaiting retransmission, or -1 otherwise */
@@ -599,8 +589,6 @@ void nr_simple_ulsch_preprocessor(module_id_t module_id,
const int mcs = 9;
NR_sched_pusch_t *sched_pusch = &sched_ctrl->sched_pusch;
sched_pusch->mcs = mcs;
sched_pusch->rbStart = rbStart;
sched_pusch->rbSize = rbSize;
/* Calculate TBS from MCS */
sched_pusch->R = nr_get_code_rate_ul(mcs, ps->mcs_table);
@@ -610,15 +598,35 @@ void nr_simple_ulsch_preprocessor(module_id_t module_id,
sched_pusch->R >>= 1;
sched_pusch->Qm <<= 1;
}
sched_pusch->tb_size = nr_compute_tbs(sched_pusch->Qm,
sched_pusch->R,
sched_pusch->rbSize,
ps->nrOfSymbols,
ps->N_PRB_DMRS * ps->num_dmrs_symb,
0, // nb_rb_oh
0,
1 /* NrOfLayers */)
>> 3;
/* get first, largest unallocated region */
uint16_t *vrb_map_UL =
&RC.nrmac[module_id]->common_channels[CC_id].vrb_map_UL[sched_slot * MAX_BWP_SIZE];
int rbStart = NRRIV2PRBOFFSET(sched_ctrl->active_bwp->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
const uint16_t bwpSize = NRRIV2BW(sched_ctrl->active_ubwp->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
while (rbStart < bwpSize && vrb_map_UL[rbStart]) rbStart++;
uint16_t rbSize = 4;
sched_pusch->rbStart = rbStart;
const int B = cmax(sched_ctrl->estimated_ul_buffer - sched_ctrl->sched_ul_bytes, 0);
do {
rbSize++;
sched_pusch->rbSize = rbSize;
sched_pusch->tb_size = nr_compute_tbs(sched_pusch->Qm,
sched_pusch->R,
sched_pusch->rbSize,
ps->nrOfSymbols,
ps->N_PRB_DMRS * ps->num_dmrs_symb,
0, // nb_rb_oh
0,
1 /* NrOfLayers */)
>> 3;
} while (rbStart + rbSize < bwpSize && !vrb_map_UL[rbStart+rbSize] &&
sched_pusch->tb_size < B);
LOG_D(MAC,"rbSize %d, TBS %d, est buf %d, sched_ul %d, B %d\n",
rbSize, sched_pusch->tb_size, sched_ctrl->estimated_ul_buffer, sched_ctrl->sched_ul_bytes, B);
/* mark the corresponding RBs as used */
for (int rb = 0; rb < sched_ctrl->sched_pusch.rbSize; rb++)