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default ssb periodicity 5ms and function to compute if ssb is in slot

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This commit is contained in:
Francesco Mani
2019-04-05 11:57:20 +02:00
parent 2feed73050
commit 91121c6bd3
2 changed files with 26 additions and 8 deletions
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openair1/PHY/INIT/nr_init_ue.c
+1 -1
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@@ -912,7 +912,7 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
ue->decode_MIB = 1;
ue->decode_SIB = 1;
ue->ssb_periodicity = 20; // initialization of ssb periodicity
ue->ssb_periodicity = 5; // initialization of ssb periodicity to 5ms according to TS38.213 section 4.1
init_prach_tables(839);
openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
+25 -7
View File
@@ -4299,6 +4299,26 @@ void *UE_thread_slot1_dl_processing(void *arg) {
#endif
int is_pbch_in_slot(fapi_nr_pbch_config_t pbch_config, int frame, int slot, int periodicity, uint16_t slots_per_frame) {
int ssb_slot_decoded = (pbch_config.ssb_index)/2;
if (periodicity == 5) {
// check for pbch in corresponding slot each half frame
if (pbch_config.half_frame_bit)
return(slot == ssb_slot_decoded || slot == ssb_slot_decoded - slots_per_frame/2);
else
return(slot == ssb_slot_decoded || slot == ssb_slot_decoded + slots_per_frame/2);
}
else {
// if the current frame is supposed to contain ssb
if (!((frame-(pbch_config.system_frame_number))%(periodicity/10)))
return(slot == ssb_slot_decoded);
else
return 0;
}
}
int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eNB_id,
uint8_t do_pdcch_flag,runmode_t mode,
@@ -4310,11 +4330,11 @@ int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eN
int pilot1;
int frame_rx = proc->frame_rx;
int nr_tti_rx = proc->nr_tti_rx;
int slot_pbch;
NR_UE_PDCCH *pdcch_vars = ue->pdcch_vars[ue->current_thread_id[nr_tti_rx]][0];
uint16_t nb_symb_sch = 9; // to be updated by higher layer
uint8_t nb_symb_pdcch = pdcch_vars->coreset[0].duration;
uint8_t ssb_periodicity = 10; //ue->ssb_periodicity; // initialized to 20ms in nr_init_ue and never changed for now
uint8_t ssb_frame_periodicity;
uint8_t ssb_periodicity = 10;// ue->ssb_periodicity; // initialized to 5ms in nr_init_ue for scenarios where UE is not configured (otherwise acquired by cell configuration from gNB or LTE)
uint8_t dci_cnt = 0;
LOG_D(PHY," ****** start RX-Chain for Frame.Slot %d.%d ****** \n", frame_rx%1024, nr_tti_rx);
@@ -4462,12 +4482,10 @@ int phy_procedures_nrUE_RX(PHY_VARS_NR_UE *ue,UE_nr_rxtx_proc_t *proc,uint8_t eN
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PDSCH_PROC_RA, VCD_FUNCTION_OUT);
}
ssb_frame_periodicity = ssb_periodicity/10 ; // 10ms is the frame length
slot_pbch = is_pbch_in_slot(pbch_config, frame_rx, nr_tti_rx, ssb_periodicity, ue->frame_parms.slots_per_frame);
int ssb_slot = (pbch_config.ssb_index)/2;
// looking for pbch only in frames according to ssb periodicity and in slot where decoded ssb is found
if ((ue->decode_MIB == 1) && (nr_tti_rx == ssb_slot) && !((frame_rx-(pbch_config.system_frame_number))%ssb_frame_periodicity))
// looking for pbch only in slot where it is supposed to be
if ((ue->decode_MIB == 1) && slot_pbch)
{
LOG_D(PHY," ------ PBCH ChannelComp/LLR: frame.slot %d.%d ------ \n", frame_rx%1024, nr_tti_rx);