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dynamic mcs selection for msg3

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This commit is contained in:
francescomani
2022-01-07 16:58:53 +01:00
parent 10e4ce2dce
commit d4d7173265
1 changed files with 18 additions and 11 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+18 -11
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@@ -970,6 +970,7 @@ void fill_msg3_pusch_pdu(nfapi_nr_pusch_pdu_t *pusch_pdu,
int start_symbol_index,nr_of_symbols;
SLIV2SL(startSymbolAndLength, &start_symbol_index, &nr_of_symbols);
int mcsindex = -1; // init value
pusch_pdu->pdu_bit_map = PUSCH_PDU_BITMAP_PUSCH_DATA;
pusch_pdu->rnti = rnti;
@@ -978,10 +979,7 @@ void fill_msg3_pusch_pdu(nfapi_nr_pusch_pdu_t *pusch_pdu,
pusch_pdu->bwp_size = bwp_size;
pusch_pdu->subcarrier_spacing = scs;
pusch_pdu->cyclic_prefix = 0;
pusch_pdu->mcs_index = 1;
pusch_pdu->mcs_table = 0;
pusch_pdu->target_code_rate = nr_get_code_rate_ul(pusch_pdu->mcs_index,pusch_pdu->mcs_table);
pusch_pdu->qam_mod_order = nr_get_Qm_ul(pusch_pdu->mcs_index,pusch_pdu->mcs_table);
if (scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->msg3_transformPrecoder == NULL)
pusch_pdu->transform_precoding = 1;
else
@@ -1018,15 +1016,24 @@ void fill_msg3_pusch_pdu(nfapi_nr_pusch_pdu_t *pusch_pdu,
int num_dmrs_symb = 0;
for(int i = start_symbol_index; i < start_symbol_index+nr_of_symbols; i++)
num_dmrs_symb += (pusch_pdu->ul_dmrs_symb_pos >> i) & 1;
pusch_pdu->pusch_data.tb_size = nr_compute_tbs(pusch_pdu->qam_mod_order,
pusch_pdu->target_code_rate,
pusch_pdu->rb_size,
pusch_pdu->nr_of_symbols,
num_dmrs_symb*12, // nb dmrs set for no data in dmrs symbol
0, //nb_rb_oh
0, // to verify tb scaling
pusch_pdu->nrOfLayers)>>3;
int TBS = 0;
while(TBS<7) { // TBS for msg3 is 7 bytes (except for RRCResumeRequest1 currently not implemented)
mcsindex++;
pusch_pdu->target_code_rate = nr_get_code_rate_ul(mcsindex,pusch_pdu->mcs_table);
pusch_pdu->qam_mod_order = nr_get_Qm_ul(mcsindex,pusch_pdu->mcs_table);
TBS = nr_compute_tbs(pusch_pdu->qam_mod_order,
pusch_pdu->target_code_rate,
pusch_pdu->rb_size,
pusch_pdu->nr_of_symbols,
num_dmrs_symb*12, // nb dmrs set for no data in dmrs symbol
0, //nb_rb_oh
0, // to verify tb scaling
pusch_pdu->nrOfLayers)>>3;
pusch_pdu->mcs_index = mcsindex;
pusch_pdu->pusch_data.tb_size = TBS;
}
}
void nr_add_msg3(module_id_t module_idP, int CC_id, frame_t frameP, sub_frame_t slotP, NR_RA_t *ra, uint8_t *RAR_pdu)