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Merge remote-tracking branch 'origin/nr_fix_duplex' into integration_2025_w46 (!3666)

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NTN: Fixing variable ULDLduplex issue for NTN bands

- Duplex is assumed to be static but for NTN bands (and also for some non NTN
  bands), it is not static.
- Tx-RX Duplex is defined in section 5.4.4 of 38.101-5 (for NTN) specs v1809
- For example: In NTN-OTA testing, the GEO satellite operator configured in
  band 256 the DL, UL frequencies with duplex of 185Mhz.
This commit is contained in:
Jaroslava Fiedlerova
2025-11-12 21:54:54 +01:00
parent afa55ff951 40fae6136c
commit 0d106428eb
4 changed files with 51 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/INIT/nr_init.c
+1 -1
View File
@@ -366,7 +366,7 @@ void nr_phy_config_request(NR_PHY_Config_t *phy_config)
fp->ul_CarrierFreq = ((ul_bw_khz>>1) + gNB_config->carrier_config.uplink_frequency.value)*1000 ;
int32_t dlul_offset = fp->ul_CarrierFreq - fp->dl_CarrierFreq;
fp->nr_band = get_band(fp->dl_CarrierFreq, dlul_offset);
fp->nr_band = get_band(fp->dl_CarrierFreq, dlul_offset, dl_bw_khz, ul_bw_khz);
LOG_I(PHY, "DL frequency %lu Hz, UL frequency %lu Hz: band %d, uldl offset %d Hz\n", fp->dl_CarrierFreq, fp->ul_CarrierFreq, fp->nr_band, dlul_offset);
openair1/PHY/INIT/nr_parms.c
+5 -15
View File
@@ -379,15 +379,13 @@ int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
fp->N_RB_SL = config->carrier_config.sl_grid_size[fp->numerology_index];
fp->frame_type = get_frame_type(fp->nr_band, fp->numerology_index);
int32_t uplink_frequency_offset = get_delta_duplex(fp->nr_band, fp->numerology_index);
int64_t uplink_frequency_offset = fp->ul_CarrierFreq - fp->dl_CarrierFreq;
uplink_frequency_offset *= 1000;
LOG_I(PHY, "Initializing frame parms: DL frequency %lu Hz, UL frequency %lu Hz: band %d, uldl offset %d Hz\n", fp->dl_CarrierFreq, fp->ul_CarrierFreq, fp->nr_band, uplink_frequency_offset);
LOG_I(PHY, "Initializing frame parms: DL frequency %lu Hz, UL frequency %lu Hz: band %d, uldl offset %ld Hz\n", fp->dl_CarrierFreq, fp->ul_CarrierFreq, fp->nr_band, uplink_frequency_offset);
AssertFatal(fp->frame_type==config->cell_config.frame_duplex_type, "Invalid duplex type (frame_type %d,cell_config.frame_duplex_type %d) in config request file for band %d\n", fp->frame_type,config->cell_config.frame_duplex_type,fp->nr_band);
AssertFatal(fp->ul_CarrierFreq == (fp->dl_CarrierFreq + uplink_frequency_offset), "Disagreement in uplink frequency for band %d: ul_CarrierFreq = %lu Hz vs expected %lu Hz\n", fp->nr_band, fp->ul_CarrierFreq, fp->dl_CarrierFreq + uplink_frequency_offset);
LOG_I(PHY,"Initializing frame parms for mu %d, N_RB %d, Ncp %d\n",fp->numerology_index, fp->N_RB_DL, Ncp);
@@ -508,7 +506,7 @@ int nr_init_frame_parms_ue_sl(NR_DL_FRAME_PARMS *fp,
fp->ofdm_offset_divisor = ofdm_offset_divisor;
fp->threequarter_fs = threequarter_fs;
fp->nr_band = get_band(config->sl_carrier_config.sl_frequency, 0);
fp->nr_band = get_band(config->sl_carrier_config.sl_frequency, 0, 0, 0);
fp->att_rx = 0;
fp->att_tx = 0;
@@ -522,8 +520,6 @@ int nr_init_frame_parms_ue_sl(NR_DL_FRAME_PARMS *fp,
fp->Ncp = config->sl_bwp_config.sl_cyclic_prefix;
fp->frame_type = get_frame_type(fp->nr_band, fp->numerology_index);
int32_t uplink_frequency_offset = get_delta_duplex(fp->nr_band, fp->numerology_index);
uplink_frequency_offset *= 1000;
uint64_t bw_khz = (12 * config->sl_carrier_config.sl_grid_size) * (15 << config->sl_bwp_config.sl_scs);
// REfer to section 3GPP spec 38.101 5.4E.2.1
@@ -539,20 +535,14 @@ int nr_init_frame_parms_ue_sl(NR_DL_FRAME_PARMS *fp,
LOG_D(PHY, "CarrierFreq %lu Hz\n", fp->sl_CarrierFreq);
LOG_I(PHY,
"Initializing frame parms: DL frequency %lu Hz, UL frequency %lu Hz SL frequency %lu Hz: band %d, uldl offset %d Hz\n",
"Initializing frame parms: DL frequency %lu Hz, UL frequency %lu Hz SL frequency %lu Hz: band %d\n",
fp->dl_CarrierFreq,
fp->ul_CarrierFreq,
fp->sl_CarrierFreq,
fp->nr_band,
uplink_frequency_offset);
fp->nr_band);
AssertFatal(fp->frame_type == TDD, "Sidelink bands only support TDD");
AssertFatal(fp->ul_CarrierFreq == (fp->dl_CarrierFreq + uplink_frequency_offset),
"Disagreement in uplink frequency for band %d: ul_CarrierFreq = %lu Hz vs expected %lu Hz\n",
fp->nr_band,
fp->ul_CarrierFreq,
fp->dl_CarrierFreq + uplink_frequency_offset);
LOG_I(PHY, "Initializing frame parms for mu %d, N_RB %d, Ncp %d\n", fp->numerology_index, fp->N_RB_DL, fp->Ncp);