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Revert "Update downlink MCS table" block of code to function nr_set_pdsch_semi_static to get downlink working again in NSA

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This commit is contained in:
luis_pereira87
2022-06-17 16:17:15 +01:00
parent 0c0d88b201
commit 78267db68b
1 changed files with 20 additions and 15 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
+20 -15
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@@ -576,6 +576,26 @@ void nr_set_pdsch_semi_static(const NR_SIB1_t *sib1,
bwpd = (NR_BWP_DownlinkDedicated_t*)bwpd0;
}
// Prevent gNB to enable 256QAM table while the RRCProcessing timer is running.
// For example, after the RRC created RRC Reconfiguration message we need to prevent gNB to apply another MCS table
// before the RRC Reconfiguration being received by the UE, otherwise UE will not be able to decode PDSCH
// and the connection will drop.
if (sched_ctrl->rrc_processing_timer == 0) {
if (bwpd &&
bwpd->pdsch_Config &&
bwpd->pdsch_Config->choice.setup &&
bwpd->pdsch_Config->choice.setup->mcs_Table) {
if (*bwpd->pdsch_Config->choice.setup->mcs_Table == 0) {
ps->mcsTableIdx = 1;
} else {
ps->mcsTableIdx = 2;
}
} else {
ps->mcsTableIdx = 0;
}
}
LOG_D(NR_MAC,"MCS Table Index: %d\n",ps->mcsTableIdx);
NR_PDSCH_Config_t *pdsch_Config = NULL;
if (bwpd && bwpd->pdsch_Config) pdsch_Config = bwpd->pdsch_Config->choice.setup;
LOG_D(NR_MAC,"tda %d, ps->time_domain_allocation %d,layers %d, ps->nrOfLayers %d, pdsch_config %p\n",tda,ps->time_domain_allocation,layers,ps->nrOfLayers,pdsch_Config);
@@ -2990,21 +3010,6 @@ void nr_mac_update_timers(module_id_t module_id,
const uint8_t layers = set_dl_nrOfLayers(sched_ctrl);
const int tda = get_dl_tda(RC.nrmac[module_id], scc, slot);
// Update downlink MCS table
if (bwpd &&
bwpd->pdsch_Config &&
bwpd->pdsch_Config->choice.setup &&
bwpd->pdsch_Config->choice.setup->mcs_Table) {
if (*bwpd->pdsch_Config->choice.setup->mcs_Table == 0) {
ps->mcsTableIdx = 1;
} else {
ps->mcsTableIdx = 2;
}
} else {
ps->mcsTableIdx = 0;
}
LOG_D(NR_MAC,"MCS Table Index: %d\n",ps->mcsTableIdx);
nr_set_pdsch_semi_static(sib1,
scc,
cg,