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use the same buffer and size for msg4 retransmission

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This commit is contained in:
francescomani
2021-08-23 11:46:34 +02:00
parent 7ab05b666d
commit d78861dbf0
2 changed files with 18 additions and 15 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+16 -15
View File
@@ -1251,18 +1251,19 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
harq->feedback_slot = pucch->ul_slot;
harq->feedback_frame = pucch->frame;
// Bytes to be transmitted
uint8_t *buf = (uint8_t *) harq->tb;
uint16_t mac_pdu_length = nr_write_ce_dlsch_pdu(module_idP, nr_mac->sched_ctrlCommon, buf, 255, ra->cont_res_id);
LOG_D(NR_MAC,"Encoded contention resolution mac_pdu_length %d\n",mac_pdu_length);
uint16_t mac_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, CCCH, ra->rnti, 1, &buf[mac_pdu_length+2]);
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->R = 0;
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->F = 0;
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->LCID = DL_SCH_LCID_CCCH;
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->L = mac_sdu_length;
mac_pdu_length = mac_pdu_length + mac_sdu_length + sizeof(NR_MAC_SUBHEADER_SHORT);
LOG_D(NR_MAC,"Encoded RRCSetup Piggyback (%d + %d bytes), mac_pdu_length %d\n", mac_sdu_length, (int)sizeof(NR_MAC_SUBHEADER_SHORT), mac_pdu_length);
// Bytes to be transmitted
if (harq->round == 0) {
uint16_t mac_pdu_length = nr_write_ce_dlsch_pdu(module_idP, nr_mac->sched_ctrlCommon, buf, 255, ra->cont_res_id);
LOG_D(NR_MAC,"Encoded contention resolution mac_pdu_length %d\n",mac_pdu_length);
uint16_t mac_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, CCCH, ra->rnti, 1, &buf[mac_pdu_length+2]);
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->R = 0;
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->F = 0;
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->LCID = DL_SCH_LCID_CCCH;
((NR_MAC_SUBHEADER_SHORT *) &buf[mac_pdu_length])->L = mac_sdu_length;
ra->mac_pdu_length = mac_pdu_length + mac_sdu_length + sizeof(NR_MAC_SUBHEADER_SHORT);
LOG_D(NR_MAC,"Encoded RRCSetup Piggyback (%d + %d bytes), mac_pdu_length %d\n", mac_sdu_length, (int)sizeof(NR_MAC_SUBHEADER_SHORT), ra->mac_pdu_length);
}
// Calculate number of symbols
int startSymbolIndex, nrOfSymbols;
@@ -1323,7 +1324,7 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
harq->tb_size = nr_compute_tbs(nr_get_Qm_dl(mcsIndex, mcsTableIdx),
nr_get_code_rate_dl(mcsIndex, mcsTableIdx),
rbSize, nrOfSymbols, N_PRB_DMRS * N_DMRS_SLOT, 0, tb_scaling,1) >> 3;
} while (rbStart + rbSize < BWPSize && !vrb_map[rbStart + rbSize] && harq->tb_size < mac_pdu_length);
} while (rbStart + rbSize < BWPSize && !vrb_map[rbStart + rbSize] && harq->tb_size < ra->mac_pdu_length);
for (int i = 0; (i < rbSize) && (rbStart <= (BWPSize - rbSize)); i++) {
if (vrb_map[rbStart + i]) {
@@ -1474,11 +1475,11 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
bwpid);
// Add padding header and zero rest out if there is space left
if (mac_pdu_length < harq->tb_size) {
NR_MAC_SUBHEADER_FIXED *padding = (NR_MAC_SUBHEADER_FIXED *) &buf[mac_pdu_length];
if (ra->mac_pdu_length < harq->tb_size) {
NR_MAC_SUBHEADER_FIXED *padding = (NR_MAC_SUBHEADER_FIXED *) &buf[ra->mac_pdu_length];
padding->R = 0;
padding->LCID = DL_SCH_LCID_PADDING;
for(int k = mac_pdu_length+1; k<harq->tb_size; k++) {
for(int k = ra->mac_pdu_length+1; k<harq->tb_size; k++) {
buf[k] = 0;
}
}
openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
+2
View File
@@ -156,6 +156,8 @@ typedef struct {
int msg4_TBsize;
/// MCS used for Msg4
int msg4_mcs;
/// MAC PDU length for Msg4
int mac_pdu_length;
/// RA search space
NR_SearchSpace_t *ra_ss;
// Beam index