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Commit 74003a93 authored by ChiehChun's avatar ChiehChun Committed by Robert Schmidt
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Create function for find CCE and retransmission

parent a9d1b781
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Showing with 84 additions and 78 deletions
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
View file @ 74003a93
...@@ -405,6 +405,83 @@ void nr_store_dlsch_buffer(module_id_t module_id, ...@@ -405,6 +405,83 @@ void nr_store_dlsch_buffer(module_id_t module_id,
} }
} }
bool find_free_CCE(module_id_t module_id,
sub_frame_t slot,
NR_UE_info_t *UE_info,
int UE_id){
NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
sched_ctrl->search_space = get_searchspace(sched_ctrl->active_bwp, target_ss);
uint8_t nr_of_candidates;
find_aggregation_candidates(&sched_ctrl->aggregation_level,
&nr_of_candidates,
sched_ctrl->search_space);
sched_ctrl->coreset = get_coreset(sched_ctrl->active_bwp, sched_ctrl->search_space, 1 /* dedicated */);
int cid = sched_ctrl->coreset->controlResourceSetId;
const uint16_t Y = UE_info->Y[UE_id][cid][slot];
const int m = UE_info->num_pdcch_cand[UE_id][cid];
sched_ctrl->cce_index = allocate_nr_CCEs(RC.nrmac[module_id],
sched_ctrl->active_bwp,
sched_ctrl->coreset,
sched_ctrl->aggregation_level,
Y,
m,
nr_of_candidates);
if (sched_ctrl->cce_index < 0) {
LOG_E(MAC, "%s(): could not find CCE for UE %d\n", __func__, UE_id);
return false;
}
UE_info->num_pdcch_cand[UE_id][cid]++;
return true;
}
bool allocate_retransmission(module_id_t module_id,
uint8_t *rballoc_mask,
int *n_rb_sched,
NR_UE_info_t *UE_info,
int UE_id){
NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
const uint16_t rnti = UE_info->rnti[UE_id];
const int current_harq_pid = sched_ctrl->current_harq_pid;
NR_UE_ret_info_t *retInfo = &sched_ctrl->retInfo[current_harq_pid];
const uint16_t bwpSize = NRRIV2BW(sched_ctrl->active_bwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
int rbStart = NRRIV2PRBOFFSET(sched_ctrl->active_bwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
sched_ctrl->time_domain_allocation = retInfo->time_domain_allocation;
/* ensure that there is a free place for RB allocation */
int rbSize = 0;
while (rbSize < retInfo->rbSize) {
rbStart += rbSize; /* last iteration rbSize was not enough, skip it */
rbSize = 0;
while (rbStart < bwpSize && !rballoc_mask[rbStart]) rbStart++;
if (rbStart >= bwpSize) {
LOG_E(MAC,
"cannot allocate retransmission for UE %d/RNTI %04x: no resources\n",
UE_id,
rnti);
return false;
}
while (rbStart + rbSize < bwpSize
&& rballoc_mask[rbStart + rbSize]
&& rbSize < retInfo->rbSize)
rbSize++;
}
sched_ctrl->rbSize = retInfo->rbSize;
sched_ctrl->rbStart = rbStart;
/* MCS etc: just reuse from previous scheduling opportunity */
sched_ctrl->mcsTableIdx = retInfo->mcsTableIdx;
sched_ctrl->mcs = retInfo->mcs;
sched_ctrl->numDmrsCdmGrpsNoData = retInfo->numDmrsCdmGrpsNoData;
/* retransmissions: directly allocate */
*n_rb_sched -= sched_ctrl->rbSize;
for (int rb = 0; rb < sched_ctrl->rbSize; rb++)
rballoc_mask[rb+sched_ctrl->rbStart] = 0;
return true;
}
void pf_dl(module_id_t module_id, void pf_dl(module_id_t module_id,
frame_t frame, frame_t frame,
sub_frame_t slot, sub_frame_t slot,
...@@ -428,31 +505,10 @@ void pf_dl(module_id_t module_id, ...@@ -428,31 +505,10 @@ void pf_dl(module_id_t module_id,
/* retransmission */ /* retransmission */
if (harq->round != 0) { if (harq->round != 0) {
/* Find a free CCE */ /* Find a free CCE */
const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific; bool freeCCEE = find_free_CCE(module_id, slot, UE_info, UE_id);
sched_ctrl->search_space = get_searchspace(sched_ctrl->active_bwp, target_ss); if (!freeCCEE)
uint8_t nr_of_candidates; continue;
find_aggregation_candidates(&sched_ctrl->aggregation_level,
&nr_of_candidates,
sched_ctrl->search_space);
sched_ctrl->coreset = get_coreset(sched_ctrl->active_bwp, sched_ctrl->search_space, 1 /* dedicated */);
int cid = sched_ctrl->coreset->controlResourceSetId;
const uint16_t Y = UE_info->Y[UE_id][cid][slot];
const int m = UE_info->num_pdcch_cand[UE_id][cid];
sched_ctrl->cce_index = allocate_nr_CCEs(RC.nrmac[module_id],
sched_ctrl->active_bwp,
sched_ctrl->coreset,
sched_ctrl->aggregation_level,
Y,
m,
nr_of_candidates);
if (sched_ctrl->cce_index < 0) {
LOG_E(MAC, "%s(): could not find CCE for UE %d\n", __func__, UE_id);
return;
}
UE_info->num_pdcch_cand[UE_id][cid]++;
/* Find PUCCH occasion */ /* Find PUCCH occasion */
nr_acknack_scheduling(module_id, nr_acknack_scheduling(module_id,
UE_id, UE_id,
...@@ -463,38 +519,8 @@ void pf_dl(module_id_t module_id, ...@@ -463,38 +519,8 @@ void pf_dl(module_id_t module_id,
&sched_ctrl->pucch_occ_idx); &sched_ctrl->pucch_occ_idx);
AssertFatal(sched_ctrl->pucch_sched_idx >= 0, "no uplink slot for PUCCH found!\n"); AssertFatal(sched_ctrl->pucch_sched_idx >= 0, "no uplink slot for PUCCH found!\n");
/* Allocate retransmission */ /* Allocate retransmission */
NR_UE_ret_info_t *retInfo = &sched_ctrl->retInfo[current_harq_pid]; bool r = allocate_retransmission(module_id, rballoc_mask, &n_rb_sched, UE_info, UE_id);
sched_ctrl->time_domain_allocation = retInfo->time_domain_allocation;
/* ensure that there is a free place for RB allocation */
int rbSize = 0;
const uint16_t bwpSize = NRRIV2BW(sched_ctrl->active_bwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
int rbStart = NRRIV2PRBOFFSET(sched_ctrl->active_bwp->bwp_Common->genericParameters.locationAndBandwidth, 275);
while (rbSize < retInfo->rbSize) {
rbStart += rbSize; /* last iteration rbSize was not enough, skip it */
rbSize = 0;
while (rbStart < bwpSize && !rballoc_mask[rbStart]) rbStart++;
if (rbStart >= bwpSize) {
LOG_E(MAC,
"cannot allocate retransmission for UE %d/RNTI %04x: no resources\n",
UE_id,
rnti);
return;
}
while (rbStart + rbSize < bwpSize
&& rballoc_mask[rbStart + rbSize]
&& rbSize < retInfo->rbSize)
rbSize++;
}
sched_ctrl->rbSize = retInfo->rbSize;
sched_ctrl->rbStart = rbStart;
/* MCS etc: just reuse from previous scheduling opportunity */
sched_ctrl->mcsTableIdx = retInfo->mcsTableIdx;
sched_ctrl->mcs = retInfo->mcs;
sched_ctrl->numDmrsCdmGrpsNoData = retInfo->numDmrsCdmGrpsNoData;
} else { } else {
/* Check DL buffer */ /* Check DL buffer */
...@@ -518,29 +544,9 @@ void pf_dl(module_id_t module_id, ...@@ -518,29 +544,9 @@ void pf_dl(module_id_t module_id,
/* Find max coeff from UE_sched*/ /* Find max coeff from UE_sched*/
/* Find a free CCE */ /* Find a free CCE */
const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific; bool freeCCEE = find_free_CCE(module_id, slot, UE_info, UE_id);
sched_ctrl->search_space = get_searchspace(sched_ctrl->active_bwp, target_ss); if (!freeCCEE)
uint8_t nr_of_candidates; return;
find_aggregation_candidates(&sched_ctrl->aggregation_level,
&nr_of_candidates,
sched_ctrl->search_space);
sched_ctrl->coreset = get_coreset(sched_ctrl->active_bwp, sched_ctrl->search_space, 1 /* dedicated */);
int cid = sched_ctrl->coreset->controlResourceSetId;
const uint16_t Y = UE_info->Y[UE_id][cid][slot];
const int m = UE_info->num_pdcch_cand[UE_id][cid];
sched_ctrl->cce_index = allocate_nr_CCEs(RC.nrmac[module_id],
sched_ctrl->active_bwp,
sched_ctrl->coreset,
sched_ctrl->aggregation_level,
Y,
m,
nr_of_candidates);
if (sched_ctrl->cce_index < 0) {
LOG_E(MAC, "%s(): could not find CCE for UE %d\n", __func__, UE_id);
return;
}
UE_info->num_pdcch_cand[UE_id][cid]++;
/* Find PUCCH occasion */ /* Find PUCCH occasion */
nr_acknack_scheduling(module_id, nr_acknack_scheduling(module_id,
UE_id, UE_id,
......
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