From 0862988c23c0c0e85f612c9c6c57248346ff7643 Mon Sep 17 00:00:00 2001
From: francescomani <francesco.mani@eurecom.fr>
Date: Wed, 24 Mar 2021 10:36:27 +0100
Subject: [PATCH] initial sync ok if SSB in the middle
---
openair1/PHY/INIT/nr_parms.c | 7 +++----
openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c | 2 +-
openair1/PHY/NR_UE_TRANSPORT/sss_nr.c | 9 +++++----
3 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/openair1/PHY/INIT/nr_parms.c b/openair1/PHY/INIT/nr_parms.c
index 7ba581b092..0595bb2ab5 100644
--- a/openair1/PHY/INIT/nr_parms.c
+++ b/openair1/PHY/INIT/nr_parms.c
@@ -320,7 +320,6 @@ int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
sco = config->ssb_table.ssb_subcarrier_offset;
fp->ssb_start_subcarrier = (12 * config->ssb_table.ssb_offset_point_a + sco);
-
set_Lmax(fp);
fp->L_ssb = (((uint64_t) config->ssb_table.ssb_mask_list[0].ssb_mask)<<32) | config->ssb_table.ssb_mask_list[1].ssb_mask;
@@ -343,7 +342,7 @@ void nr_init_frame_parms_ue_sa(NR_DL_FRAME_PARMS *frame_parms, uint64_t downlink
frame_parms->dl_CarrierFreq = downlink_frequency;
frame_parms->ul_CarrierFreq = downlink_frequency + delta_duplex;
frame_parms->freq_range = (frame_parms->dl_CarrierFreq < 6e9)? nr_FR1 : nr_FR2;
- frame_parms->N_RB_UL = frame_parms->N_RB_UL;
+ frame_parms->N_RB_UL = frame_parms->N_RB_DL;
frame_parms->nr_band = get_band(downlink_frequency, delta_duplex);
frame_parms->frame_type = get_frame_type(frame_parms->nr_band, frame_parms->numerology_index);
@@ -365,8 +364,8 @@ void nr_init_frame_parms_ue_sa(NR_DL_FRAME_PARMS *frame_parms, uint64_t downlink
frame_parms->get_samples_slot_timestamp = &get_samples_slot_timestamp;
frame_parms->samples_per_frame = 10 * frame_parms->samples_per_subframe;
- exit(1);
-
+ // setting initial ssb start subcarrier to have SSBs at BW center
+ frame_parms->ssb_start_subcarrier = ((frame_parms->N_RB_DL>>1)-10)*12;
}
diff --git a/openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c b/openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c
index 189ad53efa..dbf957992e 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c
@@ -348,7 +348,7 @@ int nr_initial_sync(UE_nr_rxtx_proc_t *proc, PHY_VARS_NR_UE *ue, int n_frames)
}
}
else {
- ret = -1;
+ ret = -1;
}
/* Consider this is a false detection if the offset is > 1000 Hz
diff --git a/openair1/PHY/NR_UE_TRANSPORT/sss_nr.c b/openair1/PHY/NR_UE_TRANSPORT/sss_nr.c
index 66296910fc..9339f3974d 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/sss_nr.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/sss_nr.c
@@ -318,7 +318,7 @@ int do_pss_sss_extract_nr(PHY_VARS_NR_UE *ue,
int32_t pss_ext[NB_ANTENNAS_RX][LENGTH_PSS_NR],
int32_t sss_ext[NB_ANTENNAS_RX][LENGTH_SSS_NR],
uint8_t doPss, uint8_t doSss,
- uint8_t subframe) // add flag to indicate extracting only PSS, only SSS, or both
+ uint8_t subframe) // add flag to indicate extracting only PSS, only SSS, or both
{
uint8_t aarx;
int32_t *pss_rxF,*pss_rxF_ext;
@@ -329,8 +329,8 @@ int do_pss_sss_extract_nr(PHY_VARS_NR_UE *ue,
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
- pss_symbol = 0;
- sss_symbol = SSS_SYMBOL_NB-PSS_SYMBOL_NB;
+ pss_symbol = 0;
+ sss_symbol = SSS_SYMBOL_NB-PSS_SYMBOL_NB;
rxdataF = ue->common_vars.common_vars_rx_data_per_thread[proc->thread_id].rxdataF;
@@ -343,6 +343,7 @@ int do_pss_sss_extract_nr(PHY_VARS_NR_UE *ue,
sss_rxF_ext = &sss_ext[aarx][0];
unsigned int k = frame_parms->first_carrier_offset + frame_parms->ssb_start_subcarrier + 56;
+
if (k>= frame_parms->ofdm_symbol_size) k-=frame_parms->ofdm_symbol_size;
for (int i=0; i < LENGTH_PSS_NR; i++) {
@@ -401,7 +402,7 @@ int pss_sss_extract_nr(PHY_VARS_NR_UE *phy_vars_ue,
UE_nr_rxtx_proc_t *proc,
int32_t pss_ext[NB_ANTENNAS_RX][LENGTH_PSS_NR],
int32_t sss_ext[NB_ANTENNAS_RX][LENGTH_SSS_NR],
- uint8_t subframe)
+ uint8_t subframe)
{
return do_pss_sss_extract_nr(phy_vars_ue, proc, pss_ext, sss_ext, 1 /* doPss */, 1 /* doSss */, subframe);
}
--
2.26.2