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avoid gnb stalling on retransmissions

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This commit is contained in:
francescomani
2022-11-21 11:11:49 +01:00
parent 92e6b5e5be
commit daf890932c
1 changed files with 11 additions and 8 deletions
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openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+11 -8
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@@ -1401,14 +1401,10 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
uint16_t mac_sdu_length = 0; uint16_t mac_sdu_length = 0;
rnti_t tc_rnti = ra->rnti;
// If UE is known by the network, C-RNTI to be used instead of TC-RNTI // If UE is known by the network, C-RNTI to be used instead of TC-RNTI
rnti_t tc_rnti = ra->rnti;
if (ra->msg3_dcch_dtch) { if (ra->msg3_dcch_dtch) {
ra->rnti = ra->crnti; ra->rnti = ra->crnti;
} else {
mac_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, CCCH, ra->rnti, 1, NULL);
if (mac_sdu_length <= 0)
return; // need to wait until RRCSetup is encoded
} }
NR_UE_info_t * UE = find_nr_UE(&nr_mac->UE_info, ra->rnti); NR_UE_info_t * UE = find_nr_UE(&nr_mac->UE_info, ra->rnti);
@@ -1417,6 +1413,16 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
return; return;
} }
NR_UE_sched_ctrl_t *sched_ctrl = &UE->UE_sched_ctrl;
/* get the PID of a HARQ process awaiting retrnasmission, or -1 otherwise */
int current_harq_pid = sched_ctrl->retrans_dl_harq.head;
if (ra->msg3_dcch_dtch == false && current_harq_pid < 0) {
mac_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, CCCH, ra->rnti, 1, NULL);
if (mac_sdu_length <= 0)
return; // need to wait until RRCSetup is encoded
}
long BWPStart = 0; long BWPStart = 0;
long BWPSize = 0; long BWPSize = 0;
NR_Type0_PDCCH_CSS_config_t *type0_PDCCH_CSS_config = NULL; NR_Type0_PDCCH_CSS_config_t *type0_PDCCH_CSS_config = NULL;
@@ -1509,9 +1515,6 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
LOG_I(NR_MAC,"Generate msg4, rnti: %04x\n", ra->rnti); LOG_I(NR_MAC,"Generate msg4, rnti: %04x\n", ra->rnti);
NR_UE_sched_ctrl_t *sched_ctrl = &UE->UE_sched_ctrl;
/* get the PID of a HARQ process awaiting retrnasmission, or -1 otherwise */
int current_harq_pid = sched_ctrl->retrans_dl_harq.head;
// HARQ management // HARQ management
if (current_harq_pid < 0) { if (current_harq_pid < 0) {
AssertFatal(sched_ctrl->available_dl_harq.head >= 0, AssertFatal(sched_ctrl->available_dl_harq.head >= 0,