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UE: Improve synchronization for reconfigurationWithSync

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Improve synchronization to also handle handover between gNB-DUs with
differing carrier freqs.
This commit is contained in:
rmagueta
2024-10-25 20:09:41 +02:00
committed by Robert Schmidt
parent 5378c4d8d9
commit 4a5bf53caa
2 changed files with 18 additions and 3 deletions
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executables/nr-ue.c
+17 -2
View File
@@ -38,6 +38,7 @@
#include "LAYER2/nr_rlc/nr_rlc_oai_api.h"
#include "RRC/NR/MESSAGES/asn1_msg.h"
#include "openair1/PHY/TOOLS/phy_scope_interface.h"
#include "PHY/MODULATION/nr_modulation.h"
/*
* NR SLOT PROCESSING SEQUENCE
@@ -604,9 +605,23 @@ static int UE_dl_preprocessing(PHY_VARS_NR_UE *UE, const UE_nr_rxtx_proc_t *proc
// Start synchronization with a target gNB
if (UE->synch_request.received_synch_request == 1) {
fapi_nr_synch_request_t *synch_req = &UE->synch_request.synch_req;
UE->is_synchronized = 0;
UE->UE_scan_carrier = UE->synch_request.synch_req.ssb_bw_scan;
UE->target_Nid_cell = UE->synch_request.synch_req.target_Nid_cell;
UE->UE_scan_carrier = synch_req->ssb_bw_scan;
UE->target_Nid_cell = synch_req->target_Nid_cell;
uint64_t dl_bw = (12 * fp->N_RB_DL) * (15000 << fp->numerology_index);
uint64_t dl_CarrierFreq = (dl_bw >> 1) + (uint64_t)UE->nrUE_config.carrier_config.dl_frequency * 1000;
uint64_t ul_bw = (12 * fp->N_RB_UL) * (15000 << fp->numerology_index);
uint64_t ul_CarrierFreq = (ul_bw >> 1) + (uint64_t)UE->nrUE_config.carrier_config.uplink_frequency * 1000;
if (dl_CarrierFreq != fp->dl_CarrierFreq || ul_CarrierFreq != fp->ul_CarrierFreq) {
fp->dl_CarrierFreq = dl_CarrierFreq;
fp->ul_CarrierFreq = ul_CarrierFreq;
nr_rf_card_config_freq(&openair0_cfg[UE->rf_map.card], ul_CarrierFreq, dl_CarrierFreq, 0);
UE->rfdevice.trx_set_freq_func(&UE->rfdevice, &openair0_cfg[0]);
init_symbol_rotation(fp);
}
clean_UE_harq(UE);
UE->synch_request.received_synch_request = 0;
}
openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
+1 -1
View File
@@ -2240,7 +2240,7 @@ static int get_nr_prach_info_from_ssb_index(prach_association_pattern_t *prach_a
ssb_info_p->mapped_ro[n_mapped_ro]->frame,
ssb_info_p->mapped_ro[n_mapped_ro]->slot,
prach_assoc_pattern->nb_of_frame);
if ((slot == ssb_info_p->mapped_ro[n_mapped_ro]->slot) &&
if ((slot == ssb_info_p->mapped_ro[n_mapped_ro]->slot) && prach_assoc_pattern->prach_conf_period_list[0].nb_of_frame != 0 &&
(ssb_info_p->mapped_ro[n_mapped_ro]->frame == (frame % prach_assoc_pattern->nb_of_frame))) {
uint8_t prach_config_period_nb = ssb_info_p->mapped_ro[n_mapped_ro]->frame / prach_assoc_pattern->prach_conf_period_list[0].nb_of_frame;
uint8_t frame_nb_in_prach_config_period = ssb_info_p->mapped_ro[n_mapped_ro]->frame % prach_assoc_pattern->prach_conf_period_list[0].nb_of_frame;