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Check beam before allocating Msg2/harmonize with Msg3 retx

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This commit is contained in:
Robert Schmidt
2024-04-04 18:54:04 +02:00
parent d534e444f0
commit ca1ca5f5af
1 changed files with 22 additions and 24 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+22 -24
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@@ -70,7 +70,6 @@ static const uint8_t DELTA[4] = {2, 3, 4, 6};
static const float ssb_per_rach_occasion[8] = {0.125, 0.25, 0.5, 1, 2, 4, 8};
__attribute__ ((unused))
static int16_t ssb_index_from_prach(module_id_t module_idP,
frame_t frameP,
sub_frame_t slotP,
@@ -526,6 +525,9 @@ void nr_initiate_ra_proc(module_id_t module_idP,
NR_ServingCellConfigCommon_t *scc = cc->ServingCellConfigCommon;
configure_UE_BWP(nr_mac, scc, NULL, ra, NULL, -1, -1);
uint8_t beam_index = ssb_index_from_prach(module_idP, frameP, slotP, preamble_index, freq_index, symbol);
ra->beam_id = cc->ssb_index[beam_index];
NR_SCHED_UNLOCK(&nr_mac->sched_lock);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC, 0);
@@ -546,6 +548,20 @@ static void start_ra_contention_resolution_timer(NR_RA_t *ra, const long ra_Cont
ra->contention_resolution_timer);
}
static bool beam_is_active(const NR_TDD_UL_DL_Pattern_t *tdd, int mu, const int16_t *tdd_beam_association, int slot, int16_t ra_beam)
{
if (tdd_beam_association == NULL) // no beams configured
return true;
DevAssert(tdd != NULL);
const int n_slots_frame = nr_slots_per_frame[mu];
uint8_t tdd_period_slot = n_slots_frame/get_nb_periods_per_frame(tdd->dl_UL_TransmissionPeriodicity);
int num_tdd_period = slot / tdd_period_slot;
int16_t current_beam = tdd_beam_association[num_tdd_period];
return current_beam == -1 /* no beams */
|| current_beam == ra_beam;
}
static void nr_generate_Msg3_retransmission(module_id_t module_idP,
int CC_id,
frame_t frame,
@@ -567,19 +583,11 @@ static void nr_generate_Msg3_retransmission(module_id_t module_idP,
if (is_xlsch_in_slot(nr_mac->ulsch_slot_bitmap[sched_slot / 64], sched_slot)) {
// beam association for FR2
int16_t *tdd_beam_association = nr_mac->tdd_beam_association;
if (*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0] >= 257) {
// FR2
const int n_slots_frame = nr_slots_per_frame[mu];
const NR_TDD_UL_DL_Pattern_t *tdd = scc->tdd_UL_DL_ConfigurationCommon ? &scc->tdd_UL_DL_ConfigurationCommon->pattern1 : NULL;
AssertFatal(tdd,"Dynamic TDD not handled yet\n");
uint8_t tdd_period_slot = n_slots_frame/get_nb_periods_per_frame(tdd->dl_UL_TransmissionPeriodicity);
int num_tdd_period = sched_slot/tdd_period_slot;
if((tdd_beam_association[num_tdd_period]!=-1)&&(tdd_beam_association[num_tdd_period]!=ra->beam_id))
return; // can't schedule retransmission in this slot
else
tdd_beam_association[num_tdd_period] = ra->beam_id;
if (!beam_is_active(tdd, mu, nr_mac->tdd_beam_association, sched_slot, ra->beam_id))
return;
}
int fh = 0;
@@ -802,18 +810,6 @@ static void nr_get_Msg3alloc(module_id_t module_id,
ra->Msg3_slot = abs_slot % n_slots_frame;
ra->Msg3_frame = (current_frame + (abs_slot / n_slots_frame)) % 1024;
// beam association for FR2
if (*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0] >= 257) {
const NR_TDD_UL_DL_Pattern_t *tdd = scc->tdd_UL_DL_ConfigurationCommon ? &scc->tdd_UL_DL_ConfigurationCommon->pattern1 : NULL;
AssertFatal(tdd,"Dynamic TDD not handled yet\n");
uint8_t tdd_period_slot = n_slots_frame/get_nb_periods_per_frame(tdd->dl_UL_TransmissionPeriodicity);
int num_tdd_period = ra->Msg3_slot/tdd_period_slot;
if((tdd_beam_association[num_tdd_period]!=-1)&&(tdd_beam_association[num_tdd_period]!=ra->beam_id))
AssertFatal(1==0,"Cannot schedule MSG3\n");
else
tdd_beam_association[num_tdd_period] = ra->beam_id;
}
LOG_I(NR_MAC,
"[RAPROC] Msg3 scheduled at %d.%d (%d.%d k2 %ld TDA %u)\n",
ra->Msg3_frame,
@@ -1199,9 +1195,11 @@ static void nr_generate_Msg2(module_id_t module_idP,
if (!check_msg2_monitoring(ra, dl_bwp->scs, frameP, slotP))
return;
const NR_UE_UL_BWP_t *ul_bwp = &ra->UL_BWP;
const NR_TDD_UL_DL_Pattern_t *tdd = scc->tdd_UL_DL_ConfigurationCommon ? &scc->tdd_UL_DL_ConfigurationCommon->pattern1 : NULL;
if (!beam_is_active(tdd, ul_bwp->scs, nr_mac->tdd_beam_association, slotP, ra->beam_id))
return;
ra->Msg3_tda_id = get_feasible_msg3_tda(cc->frame_type,
DELTA[ul_bwp->scs],
nr_mac->ulsch_slot_bitmap,